1SkPixmap Reference 2=== 3 4 5<a name='SkPixmap'></a> 6 7--- 8 9<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> 10class <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> { 11 12 <a href='#SkPixmap_empty_constructor'>SkPixmap()</a>; 13 <a href='#SkPixmap_const_SkImageInfo_const_star'>SkPixmap</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const void* addr, size_t <a href='#SkPixmap_rowBytes'>rowBytes</a>); 14 void <a href='#SkPixmap_reset'>reset()</a>; 15 void <a href='#SkPixmap_reset'>reset</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const void* addr, size_t <a href='#SkPixmap_rowBytes'>rowBytes</a>); 16 void <a href='#SkPixmap_setColorSpace'>setColorSpace</a>(<a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkColorSpace'>SkColorSpace</a>> <a href='#SkPixmap_colorSpace'>colorSpace</a>); 17 bool <a href='#SkPixmap_extractSubset'>extractSubset</a>(<a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>* subset, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& area) const; 18 const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& <a href='#SkPixmap_info'>info()</a> const; 19 size_t <a href='#SkPixmap_rowBytes'>rowBytes</a>() const; 20 const void* <a href='#SkPixmap_addr'>addr()</a> const; 21 int <a href='#SkPixmap_width'>width()</a> const; 22 int <a href='#SkPixmap_height'>height()</a> const; 23 <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> <a href='#SkPixmap_colorType'>colorType</a>() const; 24 <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> <a href='#SkPixmap_alphaType'>alphaType</a>() const; 25 <a href='undocumented#SkColorSpace'>SkColorSpace</a>* <a href='#SkPixmap_colorSpace'>colorSpace</a>() const; 26 bool <a href='#SkPixmap_isOpaque'>isOpaque</a>() const; 27 <a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkPixmap_bounds'>bounds()</a> const; 28 int <a href='#SkPixmap_rowBytesAsPixels'>rowBytesAsPixels</a>() const; 29 int <a href='#SkPixmap_shiftPerPixel'>shiftPerPixel</a>() const; 30 size_t <a href='#SkPixmap_computeByteSize'>computeByteSize</a>() const; 31 bool <a href='#SkPixmap_computeIsOpaque'>computeIsOpaque</a>() const; 32 <a href='SkColor_Reference#SkColor'>SkColor</a> <a href='#SkPixmap_getColor'>getColor</a>(int x, int y) const; 33 float <a href='#SkPixmap_getAlphaf'>getAlphaf</a>(int x, int y) const; 34 const void* <a href='#SkPixmap_addr'>addr</a>(int x, int y) const; 35 const uint8_t* <a href='#SkPixmap_addr8'>addr8</a>() const; 36 const uint16_t* <a href='#SkPixmap_addr16'>addr16</a>() const; 37 const uint32_t* <a href='#SkPixmap_addr32'>addr32</a>() const; 38 const uint64_t* <a href='#SkPixmap_addr64'>addr64</a>() const; 39 const uint16_t* <a href='#SkPixmap_addrF16'>addrF16</a>() const; 40 const uint8_t* <a href='#SkPixmap_addr8'>addr8</a>(int x, int y) const; 41 const uint16_t* <a href='#SkPixmap_addr16'>addr16</a>(int x, int y) const; 42 const uint32_t* <a href='#SkPixmap_addr32'>addr32</a>(int x, int y) const; 43 const uint64_t* <a href='#SkPixmap_addr64'>addr64</a>(int x, int y) const; 44 const uint16_t* <a href='#SkPixmap_addrF16'>addrF16</a>(int x, int y) const; 45 void* <a href='#SkPixmap_writable_addr'>writable_addr</a>() const; 46 void* <a href='#SkPixmap_writable_addr'>writable_addr</a>(int x, int y) const; 47 uint8_t* <a href='#SkPixmap_writable_addr8'>writable_addr8</a>(int x, int y) const; 48 uint16_t* <a href='#SkPixmap_writable_addr16'>writable_addr16</a>(int x, int y) const; 49 uint32_t* <a href='#SkPixmap_writable_addr32'>writable_addr32</a>(int x, int y) const; 50 uint64_t* <a href='#SkPixmap_writable_addr64'>writable_addr64</a>(int x, int y) const; 51 uint16_t* <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a>(int x, int y) const; 52 bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& dstInfo, void* dstPixels, size_t dstRowBytes) const; 53 bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& dstInfo, void* dstPixels, size_t dstRowBytes, int srcX, 54 int srcY) const; 55 bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& dst, int srcX, int srcY) const; 56 bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& dst) const; 57 bool <a href='#SkPixmap_scalePixels'>scalePixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& dst, <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> filterQuality) const; 58 bool <a href='#SkPixmap_erase'>erase</a>(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& subset) const; 59 bool <a href='#SkPixmap_erase'>erase</a>(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>) const; 60 bool <a href='#SkPixmap_erase'>erase</a>(const <a href='SkColor4f_Reference#SkColor4f'>SkColor4f</a>& <a href='SkColor_Reference#Color'>color</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>* subset = nullptr) const; 61}; 62 63</pre> 64 65<a href='SkPixmap_Reference#Pixmap'>Pixmap</a> provides a utility to pair <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> with pixels and row bytes. 66<a href='SkPixmap_Reference#Pixmap'>Pixmap</a> is a low level class which provides convenience functions to access 67raster destinations. <a href='SkCanvas_Reference#Canvas'>Canvas</a> can not draw <a href='SkPixmap_Reference#Pixmap'>Pixmap</a>, nor does <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> provide 68a direct drawing destination. 69 70Use <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> to draw pixels referenced by <a href='SkPixmap_Reference#Pixmap'>Pixmap</a>; use <a href='SkSurface_Reference#Surface'>Surface</a> to draw into 71pixels referenced by <a href='SkPixmap_Reference#Pixmap'>Pixmap</a>. 72 73<a href='SkPixmap_Reference#Pixmap'>Pixmap</a> does not try to manage the lifetime of the <a href='undocumented#Pixel'>pixel</a> memory. Use <a href='#Pixel_Ref'>Pixel_Ref</a> 74to manage <a href='undocumented#Pixel'>pixel</a> memory; <a href='#Pixel_Ref'>Pixel_Ref</a> is safe across threads. 75 76<a name='Initialization'></a> 77 78<a name='SkPixmap_empty_constructor'></a> 79 80--- 81 82<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 83<a href='#SkPixmap_empty_constructor'>SkPixmap()</a> 84</pre> 85 86Creates an empty <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> without pixels, with <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>, with 87<a href='SkImageInfo_Reference#kUnknown_SkAlphaType'>kUnknown_SkAlphaType</a>, and with a width and height of zero. Use 88<a href='#SkPixmap_reset'>reset()</a> to associate pixels, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, width, and height 89after <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> has been created. 90 91### Return Value 92 93empty <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> 94 95### Example 96 97<div><fiddle-embed name="9547e74a9d37553a667b913ffd1312dd"> 98 99#### Example Output 100 101~~~~ 102width: 0 height: 0 color: kUnknown_SkColorType alpha: kUnknown_SkAlphaType 103width: 25 height: 35 color: kRGBA_8888_SkColorType alpha: kOpaque_SkAlphaType 104~~~~ 105 106</fiddle-embed></div> 107 108### See Also 109 110<a href='#SkPixmap_const_SkImageInfo_const_star'>SkPixmap</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& <a href='#SkPixmap_info'>info</a>, const void* <a href='#SkPixmap_addr'>addr</a>, size_t <a href='#SkPixmap_rowBytes'>rowBytes</a>) <a href='#SkPixmap_reset'>reset()</a> <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> 111 112<a name='SkPixmap_const_SkImageInfo_const_star'></a> 113 114--- 115 116<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 117<a href='#SkPixmap_const_SkImageInfo_const_star'>SkPixmap</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const void* addr, size_t <a href='#SkPixmap_rowBytes'>rowBytes</a>) 118</pre> 119 120Creates <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> from <a href='#SkPixmap_const_SkImageInfo_const_star_info'>info</a> width, height, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, and <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>. 121<a href='#SkPixmap_const_SkImageInfo_const_star_addr'>addr</a> <a href='SkPoint_Reference#Point'>points</a> to pixels, or nullptr. <a href='#SkPixmap_const_SkImageInfo_const_star_rowBytes'>rowBytes</a> should be <a href='#SkPixmap_const_SkImageInfo_const_star_info'>info</a>.<a href='#SkImageInfo_width'>width()</a> times 122<a href='#SkPixmap_const_SkImageInfo_const_star_info'>info</a>.<a href='#SkImageInfo_bytesPerPixel'>bytesPerPixel</a>(), or larger. 123 124No parameter checking is performed; it is up to the caller to ensure that 125<a href='#SkPixmap_const_SkImageInfo_const_star_addr'>addr</a> and <a href='#SkPixmap_const_SkImageInfo_const_star_rowBytes'>rowBytes</a> agree with <a href='#SkPixmap_const_SkImageInfo_const_star_info'>info</a>. 126 127The memory lifetime of pixels is managed by the caller. When <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> goes 128out of scope, <a href='#SkPixmap_const_SkImageInfo_const_star_addr'>addr</a> is unaffected. 129 130<a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> may be later modified by <a href='#SkPixmap_reset'>reset()</a> to change its <a href='undocumented#Size'>size</a>, <a href='undocumented#Pixel'>pixel</a> type, or 131storage. 132 133### Parameters 134 135<table> <tr> <td><a name='SkPixmap_const_SkImageInfo_const_star_info'><code><strong>info</strong></code></a></td> 136 <td>width, height, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> of <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a></td> 137 </tr> 138 <tr> <td><a name='SkPixmap_const_SkImageInfo_const_star_addr'><code><strong>addr</strong></code></a></td> 139 <td>pointer to pixels allocated by caller; may be nullptr</td> 140 </tr> 141 <tr> <td><a name='SkPixmap_const_SkImageInfo_const_star_rowBytes'><code><strong>rowBytes</strong></code></a></td> 142 <td><a href='undocumented#Size'>size</a> of one row of <a href='#SkPixmap_const_SkImageInfo_const_star_addr'>addr</a>; width times <a href='undocumented#Pixel'>pixel</a> <a href='undocumented#Size'>size</a>, or larger</td> 143 </tr> 144</table> 145 146### Return Value 147 148initialized <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> 149 150### Example 151 152<div><fiddle-embed name="9a00774be57d7308313b3a9073e6e696"><div><a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_MakeRasterCopy'>MakeRasterCopy</a> takes const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& as an argument. The example 153constructs a <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> from the brace-delimited parameters. 154</div> 155 156#### Example Output 157 158~~~~ 159image alpha only = false 160copy alpha only = true 161~~~~ 162 163</fiddle-embed></div> 164 165### See Also 166 167<a href='#SkPixmap_empty_constructor'>SkPixmap()</a> <a href='#SkPixmap_reset'>reset()</a> <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> 168 169<a name='SkPixmap_reset'></a> 170 171--- 172 173<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 174void <a href='#SkPixmap_reset'>reset()</a> 175</pre> 176 177Sets width, height, row bytes to zero; <a href='undocumented#Pixel'>pixel</a> address to nullptr; <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> to 178<a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>; and <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> to <a href='SkImageInfo_Reference#kUnknown_SkAlphaType'>kUnknown_SkAlphaType</a>. 179 180The prior pixels are unaffected; it is up to the caller to release pixels 181memory if desired. 182 183### Example 184 185<div><fiddle-embed name="d9eb583c39f4f0baea79896b89245c98"> 186 187#### Example Output 188 189~~~~ 190width: 25 height: 35 color: kRGBA_8888_SkColorType alpha: kOpaque_SkAlphaType 191width: 0 height: 0 color: kUnknown_SkColorType alpha: kUnknown_SkAlphaType 192~~~~ 193 194</fiddle-embed></div> 195 196### See Also 197 198<a href='#SkPixmap_empty_constructor'>SkPixmap()</a> <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> 199 200<a name='SkPixmap_reset_2'></a> 201 202--- 203 204<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 205void reset(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const void* addr, size_t <a href='#SkPixmap_rowBytes'>rowBytes</a>) 206</pre> 207 208Sets width, height, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, and <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> from <a href='#SkPixmap_reset_2_info'>info</a>. 209Sets <a href='undocumented#Pixel'>pixel</a> address from <a href='#SkPixmap_reset_2_addr'>addr</a>, which may be nullptr. 210Sets row bytes from <a href='#SkPixmap_reset_2_rowBytes'>rowBytes</a>, which should be <a href='#SkPixmap_reset_2_info'>info</a>.<a href='#SkImageInfo_width'>width()</a> times 211<a href='#SkPixmap_reset_2_info'>info</a>.<a href='#SkImageInfo_bytesPerPixel'>bytesPerPixel</a>(), or larger. 212 213Does not check <a href='#SkPixmap_reset_2_addr'>addr</a>. Asserts if built with SK_DEBUG defined and if <a href='#SkPixmap_reset_2_rowBytes'>rowBytes</a> is 214too small to hold one row of pixels. 215 216The memory lifetime pixels are managed by the caller. When <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> goes 217out of scope, <a href='#SkPixmap_reset_2_addr'>addr</a> is unaffected. 218 219### Parameters 220 221<table> <tr> <td><a name='SkPixmap_reset_2_info'><code><strong>info</strong></code></a></td> 222 <td>width, height, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> of <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a></td> 223 </tr> 224 <tr> <td><a name='SkPixmap_reset_2_addr'><code><strong>addr</strong></code></a></td> 225 <td>pointer to pixels allocated by caller; may be nullptr</td> 226 </tr> 227 <tr> <td><a name='SkPixmap_reset_2_rowBytes'><code><strong>rowBytes</strong></code></a></td> 228 <td><a href='undocumented#Size'>size</a> of one row of <a href='#SkPixmap_reset_2_addr'>addr</a>; width times <a href='undocumented#Pixel'>pixel</a> <a href='undocumented#Size'>size</a>, or larger</td> 229 </tr> 230</table> 231 232### Example 233 234<div><fiddle-embed name="9a392b753167cfa849cebeefd5a6e07d"></fiddle-embed></div> 235 236### See Also 237 238<a href='#SkPixmap_const_SkImageInfo_const_star'>SkPixmap</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& <a href='#SkPixmap_reset_2_info'>info</a>, const void* <a href='#SkPixmap_reset_2_addr'>addr</a>, size_t <a href='#SkPixmap_reset_2_rowBytes'>rowBytes</a>) <a href='#SkPixmap_reset'>reset()</a> <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> 239 240<a name='SkPixmap_setColorSpace'></a> 241 242--- 243 244<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 245void <a href='#SkPixmap_setColorSpace'>setColorSpace</a>(<a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkColorSpace'>SkColorSpace</a>> <a href='#SkPixmap_colorSpace'>colorSpace</a>) 246</pre> 247 248Changes <a href='undocumented#SkColorSpace'>SkColorSpace</a> in <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>; preserves width, height, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, and 249<a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> in <a href='SkImage_Reference#SkImage'>SkImage</a>, and leaves <a href='undocumented#Pixel'>pixel</a> address and row bytes unchanged. 250<a href='undocumented#SkColorSpace'>SkColorSpace</a> <a href='undocumented#Reference_Count'>reference count</a> is incremented. 251 252### Parameters 253 254<table> <tr> <td><a name='SkPixmap_setColorSpace_colorSpace'><code><strong>colorSpace</strong></code></a></td> 255 <td><a href='undocumented#SkColorSpace'>SkColorSpace</a> moved to <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a></td> 256 </tr> 257</table> 258 259### Example 260 261<div><fiddle-embed name="30d70aec4de17c831dba71e03dc9664a"> 262 263#### Example Output 264 265~~~~ 266is unique 267is not unique 268~~~~ 269 270</fiddle-embed></div> 271 272### See Also 273 274<a href='#Color_Space'>Color_Space</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_makeColorSpace'>makeColorSpace</a> 275 276<a name='SkPixmap_extractSubset'></a> 277 278--- 279 280<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 281bool <a href='#SkPixmap_extractSubset'>extractSubset</a>(<a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>* subset, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& area)const 282</pre> 283 284Sets <a href='#SkPixmap_extractSubset_subset'>subset</a> width, height, <a href='undocumented#Pixel'>pixel</a> address to intersection of <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> with <a href='#SkPixmap_extractSubset_area'>area</a>, 285if intersection is not empty; and return true. Otherwise, leave <a href='#SkPixmap_extractSubset_subset'>subset</a> unchanged 286and return false. 287 288Failing to read the return value generates a compile time warning. 289 290### Parameters 291 292<table> <tr> <td><a name='SkPixmap_extractSubset_subset'><code><strong>subset</strong></code></a></td> 293 <td>storage for width, height, <a href='undocumented#Pixel'>pixel</a> address of intersection</td> 294 </tr> 295 <tr> <td><a name='SkPixmap_extractSubset_area'><code><strong>area</strong></code></a></td> 296 <td>bounds to intersect with <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a></td> 297 </tr> 298</table> 299 300### Return Value 301 302true if intersection of <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> and <a href='#SkPixmap_extractSubset_area'>area</a> is not empty 303 304### Example 305 306<div><fiddle-embed name="febdbfac6cf4cde69837643be2e1f6dd"></fiddle-embed></div> 307 308### See Also 309 310<a href='#SkPixmap_reset'>reset()</a> <a href='SkIRect_Reference#SkIRect'>SkIRect</a>::<a href='#SkIRect_intersect'>intersect</a> 311 312<a name='Image_Info_Access'></a> 313 314<a name='SkPixmap_info'></a> 315 316--- 317 318<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 319const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& <a href='#SkPixmap_info'>info()</a>const 320</pre> 321 322Returns width, height, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, and <a href='undocumented#SkColorSpace'>SkColorSpace</a>. 323 324### Return Value 325 326reference to <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> 327 328### Example 329 330<div><fiddle-embed name="6e0f558bf7fabc655041116288559134"> 331 332#### Example Output 333 334~~~~ 335width: 384 height: 384 color: BGRA_8888 alpha: Opaque 336~~~~ 337 338</fiddle-embed></div> 339 340### See Also 341 342<a href='#Image_Info'>Image_Info</a> 343 344<a name='SkPixmap_rowBytes'></a> 345 346--- 347 348<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 349size_t <a href='#SkPixmap_rowBytes'>rowBytes</a>()const 350</pre> 351 352Returns row bytes, the interval from one <a href='undocumented#Pixel'>pixel</a> row to the next. Row bytes 353is at least as large as: <code><a href='#SkPixmap_width'>width()</a> * <a href='#SkPixmap_info'>info()</a>.<a href='#SkImageInfo_bytesPerPixel'>bytesPerPixel</a>()</code>. 354 355Returns zero if <a href='#SkPixmap_colorType'>colorType</a> is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>. 356It is up to the <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> creator to ensure that row bytes is a useful value. 357 358### Return Value 359 360byte length of <a href='undocumented#Pixel'>pixel</a> row 361 362### Example 363 364<div><fiddle-embed name="19ac8bb81854680bd408fec8cb797d5c"> 365 366#### Example Output 367 368~~~~ 369rowBytes: 2 minRowBytes: 4 370rowBytes: 8 minRowBytes: 4 371~~~~ 372 373</fiddle-embed></div> 374 375### See Also 376 377<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_info'>info()</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_minRowBytes'>minRowBytes</a> 378 379<a name='SkPixmap_addr'></a> 380 381--- 382 383<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 384const void* <a href='#SkPixmap_addr'>addr()</a>const 385</pre> 386 387Returns <a href='undocumented#Pixel'>pixel</a> address, the base address corresponding to the <a href='undocumented#Pixel'>pixel</a> origin. 388 389It is up to the <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> creator to ensure that <a href='undocumented#Pixel'>pixel</a> address is a useful value. 390 391### Return Value 392 393<a href='undocumented#Pixel'>pixel</a> address 394 395### Example 396 397<div><fiddle-embed name="17bcabaaee2dbb7beba562e9ca50b55e"> 398 399#### Example Output 400 401~~~~ 402#Volatile 403pixels address: 0x7f2a440bb010 404inset address: 0x7f2a440fb210 405~~~~ 406 407</fiddle-embed></div> 408 409### See Also 410 411<a href='#SkPixmap_addr_2'>addr(int x, int y)</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_info'>info()</a> <a href='#SkPixmap_rowBytes'>rowBytes</a>() 412 413<a name='SkPixmap_width'></a> 414 415--- 416 417<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 418int <a href='#SkPixmap_width'>width()</a>const 419</pre> 420 421Returns <a href='undocumented#Pixel'>pixel</a> count in each <a href='undocumented#Pixel'>pixel</a> row. Should be equal or less than: 422 423<code><a href='#SkPixmap_rowBytes'>rowBytes</a>() / <a href='#SkPixmap_info'>info()</a>.<a href='#SkImageInfo_bytesPerPixel'>bytesPerPixel</a>()</code>. 424 425### Return Value 426 427<a href='undocumented#Pixel'>pixel</a> width in <a href='#Image_Info'>Image_Info</a> 428 429### Example 430 431<div><fiddle-embed name="f68617b7153a20b2ed3d7f9ed5c6e5e4"> 432 433#### Example Output 434 435~~~~ 436pixmap width: 16 info width: 16 437~~~~ 438 439</fiddle-embed></div> 440 441### See Also 442 443<a href='#SkPixmap_height'>height()</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_width'>width()</a> 444 445<a name='SkPixmap_height'></a> 446 447--- 448 449<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 450int <a href='#SkPixmap_height'>height()</a>const 451</pre> 452 453Returns <a href='undocumented#Pixel'>pixel</a> row count. 454 455### Return Value 456 457<a href='undocumented#Pixel'>pixel</a> height in <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> 458 459### Example 460 461<div><fiddle-embed name="4a996d32122f469d51ddd0186efb48cc"> 462 463#### Example Output 464 465~~~~ 466pixmap height: 32 info height: 32 467~~~~ 468 469</fiddle-embed></div> 470 471### See Also 472 473<a href='#SkPixmap_width'>width</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_height'>height</a> 474 475<a name='SkPixmap_colorType'></a> 476 477--- 478 479<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 480<a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> <a href='#SkPixmap_colorType'>colorType</a>()const 481</pre> 482 483Returns <a href='#Image_Info_Color_Type'>Color_Type</a>, one of: <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>, <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, <a href='SkImageInfo_Reference#kRGB_565_SkColorType'>kRGB_565_SkColorType</a>, 484<a href='SkImageInfo_Reference#kARGB_4444_SkColorType'>kARGB_4444_SkColorType</a>, <a href='SkImageInfo_Reference#kRGBA_8888_SkColorType'>kRGBA_8888_SkColorType</a>, <a href='SkImageInfo_Reference#kRGB_888x_SkColorType'>kRGB_888x_SkColorType</a>, 485<a href='SkImageInfo_Reference#kBGRA_8888_SkColorType'>kBGRA_8888_SkColorType</a>, <a href='SkImageInfo_Reference#kRGBA_1010102_SkColorType'>kRGBA_1010102_SkColorType</a>, <a href='SkImageInfo_Reference#kRGB_101010x_SkColorType'>kRGB_101010x_SkColorType</a>, 486<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, <a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a> 487. 488 489### Return Value 490 491<a href='#Image_Info_Color_Type'>Color_Type</a> in <a href='#Image_Info'>Image_Info</a> 492 493### Example 494 495<div><fiddle-embed name="0ab5c7af272685f2ce177cc79e6b9457"> 496 497#### Example Output 498 499~~~~ 500color type: kAlpha_8_SkColorType 501~~~~ 502 503</fiddle-embed></div> 504 505### See Also 506 507<a href='#SkPixmap_alphaType'>alphaType</a>() <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_colorType'>colorType</a> 508 509<a name='SkPixmap_alphaType'></a> 510 511--- 512 513<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 514<a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> <a href='#SkPixmap_alphaType'>alphaType</a>()const 515</pre> 516 517Returns <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>, one of: <a href='SkImageInfo_Reference#kUnknown_SkAlphaType'>kUnknown_SkAlphaType</a>, <a href='SkImageInfo_Reference#kOpaque_SkAlphaType'>kOpaque_SkAlphaType</a>, <a href='SkImageInfo_Reference#kPremul_SkAlphaType'>kPremul_SkAlphaType</a>, 518<a href='SkImageInfo_Reference#kUnpremul_SkAlphaType'>kUnpremul_SkAlphaType</a> 519. 520 521### Return Value 522 523<a href='#Image_Info_Alpha_Type'>Alpha_Type</a> in <a href='#Image_Info'>Image_Info</a> 524 525### Example 526 527<div><fiddle-embed name="070b1a60232be499eb10c6ea62371804"> 528 529#### Example Output 530 531~~~~ 532alpha type: kPremul_SkAlphaType 533~~~~ 534 535</fiddle-embed></div> 536 537### See Also 538 539<a href='#SkPixmap_colorType'>colorType</a>() <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_alphaType'>alphaType</a> 540 541<a name='SkPixmap_colorSpace'></a> 542 543--- 544 545<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 546<a href='undocumented#SkColorSpace'>SkColorSpace</a>* <a href='#SkPixmap_colorSpace'>colorSpace</a>()const 547</pre> 548 549Returns <a href='undocumented#SkColorSpace'>SkColorSpace</a>, the range of colors, associated with <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>. The 550reference count of <a href='undocumented#SkColorSpace'>SkColorSpace</a> is unchanged. The returned <a href='undocumented#SkColorSpace'>SkColorSpace</a> is 551immutable. 552 553### Return Value 554 555<a href='undocumented#SkColorSpace'>SkColorSpace</a> in <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>, or nullptr 556 557### Example 558 559<div><fiddle-embed name="3421bb20a302d563832ba7bb45e0cc58"><div><a href='undocumented#SkColorSpace'>SkColorSpace</a>::<a href='#SkColorSpace_MakeSRGBLinear'>MakeSRGBLinear</a> creates <a href='#Color_Space'>Color_Space</a> with linear gamma 560and an sRGB gamut. This <a href='#Color_Space'>Color_Space</a> gamma is not close to sRGB gamma. 561</div> 562 563#### Example Output 564 565~~~~ 566gammaCloseToSRGB: false gammaIsLinear: true isSRGB: false 567~~~~ 568 569</fiddle-embed></div> 570 571### See Also 572 573<a href='#Color_Space'>Color_Space</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_colorSpace'>colorSpace</a> 574 575<a name='SkPixmap_isOpaque'></a> 576 577--- 578 579<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 580bool <a href='#SkPixmap_isOpaque'>isOpaque</a>()const 581</pre> 582 583Returns true if <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> is <a href='SkImageInfo_Reference#kOpaque_SkAlphaType'>kOpaque_SkAlphaType</a>. 584Does not check if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> allows <a href='SkColor_Reference#Alpha'>alpha</a>, or if any <a href='undocumented#Pixel'>pixel</a> value has 585transparency. 586 587### Return Value 588 589true if <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> has opaque <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> 590 591### Example 592 593<div><fiddle-embed name="efd083f121e888a523455ea8a49e50d1"><div><a href='#SkPixmap_isOpaque'>isOpaque</a> ignores whether all pixels are opaque or not. 594</div> 595 596#### Example Output 597 598~~~~ 599isOpaque: false 600isOpaque: false 601isOpaque: true 602isOpaque: true 603~~~~ 604 605</fiddle-embed></div> 606 607### See Also 608 609<a href='#SkPixmap_computeIsOpaque'>computeIsOpaque</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_isOpaque'>isOpaque</a> 610 611<a name='SkPixmap_bounds'></a> 612 613--- 614 615<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 616<a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkPixmap_bounds'>bounds()</a>const 617</pre> 618 619Returns <a href='SkIRect_Reference#SkIRect'>SkIRect</a> { 0, 0, <a href='#SkPixmap_width'>width()</a>, <a href='#SkPixmap_height'>height()</a> }. 620 621### Return Value 622 623integral rectangle from origin to <a href='#SkPixmap_width'>width()</a> and <a href='#SkPixmap_height'>height()</a> 624 625### Example 626 627<div><fiddle-embed name="79750fb1d898a4e5c8c828b7bc9acec5"> 628 629#### Example Output 630 631~~~~ 632width: 0 height: 0 empty: true 633width: 0 height: 2 empty: true 634width: 2 height: 0 empty: true 635width: 2 height: 2 empty: false 636~~~~ 637 638</fiddle-embed></div> 639 640### See Also 641 642<a href='#SkPixmap_height'>height()</a> <a href='#SkPixmap_width'>width()</a> <a href='SkIRect_Reference#IRect'>IRect</a> 643 644<a name='SkPixmap_rowBytesAsPixels'></a> 645 646--- 647 648<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 649int <a href='#SkPixmap_rowBytesAsPixels'>rowBytesAsPixels</a>()const 650</pre> 651 652Returns number of pixels that fit on row. Should be greater than or equal to 653<a href='#SkPixmap_width'>width()</a>. 654 655### Return Value 656 657maximum pixels per row 658 659### Example 660 661<div><fiddle-embed name="6231bb212d0c231b5bc44eac626fbcb5"> 662 663#### Example Output 664 665~~~~ 666rowBytes: 4 rowBytesAsPixels: 1 667rowBytes: 5 rowBytesAsPixels: 1 668rowBytes: 6 rowBytesAsPixels: 1 669rowBytes: 7 rowBytesAsPixels: 1 670rowBytes: 8 rowBytesAsPixels: 2 671~~~~ 672 673</fiddle-embed></div> 674 675### See Also 676 677<a href='#SkPixmap_rowBytes'>rowBytes</a> <a href='#SkPixmap_shiftPerPixel'>shiftPerPixel</a> <a href='#SkPixmap_width'>width</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_bytesPerPixel'>bytesPerPixel</a> 678 679<a name='SkPixmap_shiftPerPixel'></a> 680 681--- 682 683<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 684int <a href='#SkPixmap_shiftPerPixel'>shiftPerPixel</a>()const 685</pre> 686 687Returns bit shift converting row bytes to row pixels. 688Returns zero for <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>. 689 690### Return Value 691 692one of: 0, 1, 2, 3; left shift to convert pixels to bytes 693 694### Example 695 696<div><fiddle-embed name="bf31ee140e2c163c3957276e6d4c4f0c"> 697 698#### Example Output 699 700~~~~ 701color: kUnknown_SkColorType bytesPerPixel: 0 shiftPerPixel: 0 702color: kAlpha_8_SkColorType bytesPerPixel: 1 shiftPerPixel: 0 703color: kRGB_565_SkColorType bytesPerPixel: 2 shiftPerPixel: 1 704color: kARGB_4444_SkColorType bytesPerPixel: 2 shiftPerPixel: 1 705color: kRGBA_8888_SkColorType bytesPerPixel: 4 shiftPerPixel: 2 706color: kBGRA_8888_SkColorType bytesPerPixel: 4 shiftPerPixel: 2 707color: kGray_8_SkColorType bytesPerPixel: 1 shiftPerPixel: 0 708color: kRGBA_F16_SkColorType bytesPerPixel: 8 shiftPerPixel: 3 709~~~~ 710 711</fiddle-embed></div> 712 713### See Also 714 715<a href='#SkPixmap_rowBytes'>rowBytes</a> <a href='#SkPixmap_rowBytesAsPixels'>rowBytesAsPixels</a> <a href='#SkPixmap_width'>width</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_bytesPerPixel'>bytesPerPixel</a> 716 717<a name='SkPixmap_computeByteSize'></a> 718 719--- 720 721<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 722size_t <a href='#SkPixmap_computeByteSize'>computeByteSize</a>()const 723</pre> 724 725Returns minimum memory required for <a href='undocumented#Pixel'>pixel</a> storage. 726Does not include unused memory on last row when <a href='#SkPixmap_rowBytesAsPixels'>rowBytesAsPixels</a>() exceeds <a href='#SkPixmap_width'>width()</a>. 727Returns zero if result does not fit in size_t. 728Returns zero if <a href='#SkPixmap_height'>height()</a> or <a href='#SkPixmap_width'>width()</a> is 0. 729Returns <a href='#SkPixmap_height'>height()</a> times <a href='#SkPixmap_rowBytes'>rowBytes</a>() if <a href='#SkPixmap_colorType'>colorType</a>() is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>. 730 731### Return Value 732 733<a href='undocumented#Size'>size</a> in bytes of <a href='SkImage_Reference#Image'>image</a> buffer 734 735### Example 736 737<div><fiddle-embed name="410d14ddc45d272598c5a4e52bb047de"> 738 739#### Example Output 740 741~~~~ 742width: 1 height: 1 computeByteSize: 4 743width: 1 height: 1000 computeByteSize: 4999 744width: 1 height: 1000000 computeByteSize: 4999999 745width: 1000 height: 1 computeByteSize: 4000 746width: 1000 height: 1000 computeByteSize: 4999000 747width: 1000 height: 1000000 computeByteSize: 4999999000 748width: 1000000 height: 1 computeByteSize: 4000000 749width: 1000000 height: 1000 computeByteSize: 4999000000 750width: 1000000 height: 1000000 computeByteSize: 4999999000000 751~~~~ 752 753</fiddle-embed></div> 754 755### See Also 756 757<a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_computeByteSize'>computeByteSize</a> 758 759<a name='Reader'></a> 760 761<a name='SkPixmap_computeIsOpaque'></a> 762 763--- 764 765<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 766bool <a href='#SkPixmap_computeIsOpaque'>computeIsOpaque</a>()const 767</pre> 768 769Returns true if all pixels are opaque. <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> determines how pixels 770are encoded, and whether <a href='undocumented#Pixel'>pixel</a> describes <a href='SkColor_Reference#Alpha'>alpha</a>. Returns true for <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> 771without <a href='SkColor_Reference#Alpha'>alpha</a> in each <a href='undocumented#Pixel'>pixel</a>; for other <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, returns true if all 772pixels have <a href='SkColor_Reference#Alpha'>alpha</a> values equivalent to 1.0 or greater. 773 774For <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> <a href='SkImageInfo_Reference#kRGB_565_SkColorType'>kRGB_565_SkColorType</a> or <a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>: always 775returns true. For <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, <a href='SkImageInfo_Reference#kBGRA_8888_SkColorType'>kBGRA_8888_SkColorType</a>, 776<a href='SkImageInfo_Reference#kRGBA_8888_SkColorType'>kRGBA_8888_SkColorType</a>: returns true if all <a href='undocumented#Pixel'>pixel</a> <a href='SkColor_Reference#Alpha'>alpha</a> values are 255. 777For <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> <a href='SkImageInfo_Reference#kARGB_4444_SkColorType'>kARGB_4444_SkColorType</a>: returns true if all <a href='undocumented#Pixel'>pixel</a> <a href='SkColor_Reference#Alpha'>alpha</a> values are 15. 778For <a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a>: returns true if all <a href='undocumented#Pixel'>pixel</a> <a href='SkColor_Reference#Alpha'>alpha</a> values are 1.0 or 779greater. 780 781Returns false for <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>. 782 783### Return Value 784 785true if all pixels have opaque values or <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is opaque 786 787### Example 788 789<div><fiddle-embed name="6ef37d5be03d0bfaec992dbb5a94c66f"> 790 791#### Example Output 792 793~~~~ 794computeIsOpaque: false 795computeIsOpaque: true 796computeIsOpaque: false 797computeIsOpaque: true 798~~~~ 799 800</fiddle-embed></div> 801 802### See Also 803 804<a href='#SkPixmap_isOpaque'>isOpaque</a> <a href='#Image_Info_Color_Type'>Color_Type</a> <a href='SkColor_Reference#Alpha'>Alpha</a> 805 806<a name='SkPixmap_getColor'></a> 807 808--- 809 810<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 811<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='#SkPixmap_getColor'>getColor</a>(int x, int y)const 812</pre> 813 814Returns <a href='undocumented#Pixel'>pixel</a> at (<a href='#SkPixmap_getColor_x'>x</a>, <a href='#SkPixmap_getColor_y'>y</a>) as <a href='undocumented#Unpremultiply'>unpremultiplied</a> <a href='SkColor_Reference#Color'>color</a>. 815Returns black with <a href='SkColor_Reference#Alpha'>alpha</a> if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>. 816 817Input is not validated: out of bounds values of <a href='#SkPixmap_getColor_x'>x</a> or <a href='#SkPixmap_getColor_y'>y</a> trigger an assert() if 818built with SK_DEBUG defined; and returns undefined values or may crash if 819SK_RELEASE is defined. Fails if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a> or 820<a href='undocumented#Pixel'>pixel</a> address is nullptr. 821 822<a href='undocumented#SkColorSpace'>SkColorSpace</a> in <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> is ignored. Some <a href='SkColor_Reference#Color'>color</a> precision may be lost in the 823conversion to <a href='undocumented#Unpremultiply'>unpremultiplied</a> <a href='SkColor_Reference#Color'>color</a>; original <a href='undocumented#Pixel'>pixel</a> <a href='undocumented#Data'>data</a> may have additional 824precision. 825 826### Parameters 827 828<table> <tr> <td><a name='SkPixmap_getColor_x'><code><strong>x</strong></code></a></td> 829 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 830 </tr> 831 <tr> <td><a name='SkPixmap_getColor_y'><code><strong>y</strong></code></a></td> 832 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 833 </tr> 834</table> 835 836### Return Value 837 838<a href='undocumented#Pixel'>pixel</a> converted to <a href='undocumented#Unpremultiply'>unpremultiplied</a> <a href='SkColor_Reference#Color'>color</a> 839 840### Example 841 842<div><fiddle-embed name="94ad244056dc80ecd87daae004266334"> 843 844#### Example Output 845 846~~~~ 847Premultiplied: 848(0, 0) 0x00000000 0x2a0e002a 0x55380055 0x7f7f007f 849(0, 1) 0x2a000e2a 0x551c1c55 0x7f542a7f 0xaaaa38aa 850(0, 2) 0x55003855 0x7f2a547f 0xaa7171aa 0xd4d48dd4 851(0, 3) 0x7f007f7f 0xaa38aaaa 0xd48dd4d4 0xffffffff 852Unpremultiplied: 853(0, 0) 0x00000000 0x2a5500ff 0x55a800ff 0x7fff00ff 854(0, 1) 0x2a0055ff 0x555454ff 0x7fa954ff 0xaaff54ff 855(0, 2) 0x5500a8ff 0x7f54a9ff 0xaaaaaaff 0xd4ffaaff 856(0, 3) 0x7f00ffff 0xaa54ffff 0xd4aaffff 0xffffffff 857~~~~ 858 859</fiddle-embed></div> 860 861### See Also 862 863<a href='#SkPixmap_getAlphaf'>getAlphaf</a> <a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_readPixels'>readPixels</a> 864 865<a name='SkPixmap_getAlphaf'></a> 866 867--- 868 869<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 870float <a href='#SkPixmap_getAlphaf'>getAlphaf</a>(int x, int y)const 871</pre> 872 873Looks up the <a href='undocumented#Pixel'>pixel</a> at (<a href='#SkPixmap_getAlphaf_x'>x</a>,<a href='#SkPixmap_getAlphaf_y'>y</a>) and return its <a href='SkColor_Reference#Alpha'>alpha</a> component, normalized to [0..1]. 874This is roughly equivalent to <code>SkGetColorA(<a href='#SkPixmap_getColor'>getColor</a>())</code>, but can be more efficient 875(and more precise if the pixels store more than 8 bits per component). 876 877### Parameters 878 879<table> <tr> <td><a name='SkPixmap_getAlphaf_x'><code><strong>x</strong></code></a></td> 880 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 881 </tr> 882 <tr> <td><a name='SkPixmap_getAlphaf_y'><code><strong>y</strong></code></a></td> 883 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 884 </tr> 885</table> 886 887### Return Value 888 889<a href='SkColor_Reference#Alpha'>alpha</a> converted to normalized float 890 891### See Also 892 893<a href='#SkPixmap_getColor'>getColor</a> 894 895<a name='Readable_Address'></a> 896 897<a name='SkPixmap_addr_2'></a> 898 899--- 900 901<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 902const void* <a href='#SkPixmap_addr'>addr</a>(int x, int y)const 903</pre> 904 905Returns readable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_addr_2_x'>x</a>, <a href='#SkPixmap_addr_2_y'>y</a>). Returns nullptr if <a href='undocumented#SkPixelRef'>SkPixelRef</a> is nullptr. 906 907Input is not validated: out of bounds values of <a href='#SkPixmap_addr_2_x'>x</a> or <a href='#SkPixmap_addr_2_y'>y</a> trigger an assert() if 908built with SK_DEBUG defined. Returns nullptr if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>. 909 910Performs a lookup of <a href='undocumented#Pixel'>pixel</a> <a href='undocumented#Size'>size</a>; for better performance, call 911one of: <a href='#SkPixmap_addr8'>addr8</a>, <a href='#SkPixmap_addr16'>addr16</a>, <a href='#SkPixmap_addr32'>addr32</a>, <a href='#SkPixmap_addr64'>addr64</a>, or <a href='#SkPixmap_addrF16'>addrF16</a>(). 912 913### Parameters 914 915<table> <tr> <td><a name='SkPixmap_addr_2_x'><code><strong>x</strong></code></a></td> 916 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 917 </tr> 918 <tr> <td><a name='SkPixmap_addr_2_y'><code><strong>y</strong></code></a></td> 919 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 920 </tr> 921</table> 922 923### Return Value 924 925readable generic pointer to <a href='undocumented#Pixel'>pixel</a> 926 927### Example 928 929<div><fiddle-embed name="6e6e29e860eafed77308c973400cc84d"> 930 931#### Example Output 932 933~~~~ 934pixmap.addr(1, 2) == &storage[1 + 2 * w] 935~~~~ 936 937</fiddle-embed></div> 938 939### See Also 940 941<a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_getAddr'>getAddr</a> 942 943<a name='SkPixmap_addr8'></a> 944 945--- 946 947<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 948const uint8_t* <a href='#SkPixmap_addr8'>addr8</a>()const 949</pre> 950 951Returns readable base <a href='undocumented#Pixel'>pixel</a> address. Result is addressable as unsigned 8-bit bytes. 952Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a> or 953<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, and is built with SK_DEBUG defined. 954 955One byte corresponds to one <a href='undocumented#Pixel'>pixel</a>. 956 957### Return Value 958 959readable unsigned 8-bit pointer to pixels 960 961### Example 962 963<div><fiddle-embed name="9adda80b2dd1b08ec5ccf66da7c8bd91"> 964 965#### Example Output 966 967~~~~ 968pixmap.addr8() == storage 969~~~~ 970 971</fiddle-embed></div> 972 973### See Also 974 975<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr8'>writable_addr8</a> 976 977<a name='SkPixmap_addr16'></a> 978 979--- 980 981<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 982const uint16_t* <a href='#SkPixmap_addr16'>addr16</a>()const 983</pre> 984 985Returns readable base <a href='undocumented#Pixel'>pixel</a> address. Result is addressable as unsigned 16-bit words. 986Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGB_565_SkColorType'>kRGB_565_SkColorType</a> or 987<a href='SkImageInfo_Reference#kARGB_4444_SkColorType'>kARGB_4444_SkColorType</a>, and is built with SK_DEBUG defined. 988 989One word corresponds to one <a href='undocumented#Pixel'>pixel</a>. 990 991### Return Value 992 993readable unsigned 16-bit pointer to pixels 994 995### Example 996 997<div><fiddle-embed name="9b16012d265c954c6de13f3fc960da52"> 998 999#### Example Output 1000 1001~~~~ 1002pixmap.addr16() == storage 1003~~~~ 1004 1005</fiddle-embed></div> 1006 1007### See Also 1008 1009<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> 1010 1011<a name='SkPixmap_addr32'></a> 1012 1013--- 1014 1015<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1016const uint32_t* <a href='#SkPixmap_addr32'>addr32</a>()const 1017</pre> 1018 1019Returns readable base <a href='undocumented#Pixel'>pixel</a> address. Result is addressable as unsigned 32-bit words. 1020Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGBA_8888_SkColorType'>kRGBA_8888_SkColorType</a> or 1021<a href='SkImageInfo_Reference#kBGRA_8888_SkColorType'>kBGRA_8888_SkColorType</a>, and is built with SK_DEBUG defined. 1022 1023One word corresponds to one <a href='undocumented#Pixel'>pixel</a>. 1024 1025### Return Value 1026 1027readable unsigned 32-bit pointer to pixels 1028 1029### Example 1030 1031<div><fiddle-embed name="6b90c7ae9f254fe4ea9ef638f893a3e6"> 1032 1033#### Example Output 1034 1035~~~~ 1036pixmap.addr32() == storage 1037~~~~ 1038 1039</fiddle-embed></div> 1040 1041### See Also 1042 1043<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr32'>writable_addr32</a> 1044 1045<a name='SkPixmap_addr64'></a> 1046 1047--- 1048 1049<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1050const uint64_t* <a href='#SkPixmap_addr64'>addr64</a>()const 1051</pre> 1052 1053Returns readable base <a href='undocumented#Pixel'>pixel</a> address. Result is addressable as unsigned 64-bit words. 1054Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a> and is built 1055with SK_DEBUG defined. 1056 1057One word corresponds to one <a href='undocumented#Pixel'>pixel</a>. 1058 1059### Return Value 1060 1061readable unsigned 64-bit pointer to pixels 1062 1063### Example 1064 1065<div><fiddle-embed name="0d17085a4698a8a2e2235fad9041b4b4"> 1066 1067#### Example Output 1068 1069~~~~ 1070pixmap.addr64() == storage 1071~~~~ 1072 1073</fiddle-embed></div> 1074 1075### See Also 1076 1077<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> 1078 1079<a name='SkPixmap_addrF16'></a> 1080 1081--- 1082 1083<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1084const uint16_t* <a href='#SkPixmap_addrF16'>addrF16</a>()const 1085</pre> 1086 1087Returns readable base <a href='undocumented#Pixel'>pixel</a> address. Result is addressable as unsigned 16-bit words. 1088Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a> and is built 1089with SK_DEBUG defined. 1090 1091Each word represents one <a href='SkColor_Reference#Color'>color</a> component encoded as a half float. 1092Four words correspond to one <a href='undocumented#Pixel'>pixel</a>. 1093 1094### Return Value 1095 1096readable unsigned 16-bit pointer to first component of pixels 1097 1098### Example 1099 1100<div><fiddle-embed name="54e8525a592f05623c33b375aebc90c1"> 1101 1102#### Example Output 1103 1104~~~~ 1105pixmap.addrF16() == storage 1106~~~~ 1107 1108</fiddle-embed></div> 1109 1110### See Also 1111 1112<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> 1113 1114<a name='SkPixmap_addr8_2'></a> 1115 1116--- 1117 1118<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1119const uint8_t* <a href='#SkPixmap_addr8'>addr8</a>(int x, int y)const 1120</pre> 1121 1122Returns readable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_addr8_2_x'>x</a>, <a href='#SkPixmap_addr8_2_y'>y</a>). 1123 1124Input is not validated: out of bounds values of <a href='#SkPixmap_addr8_2_x'>x</a> or <a href='#SkPixmap_addr8_2_y'>y</a> trigger an assert() if 1125built with SK_DEBUG defined. 1126 1127Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a> or 1128<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, and is built with SK_DEBUG defined. 1129 1130### Parameters 1131 1132<table> <tr> <td><a name='SkPixmap_addr8_2_x'><code><strong>x</strong></code></a></td> 1133 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1134 </tr> 1135 <tr> <td><a name='SkPixmap_addr8_2_y'><code><strong>y</strong></code></a></td> 1136 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1137 </tr> 1138</table> 1139 1140### Return Value 1141 1142readable unsigned 8-bit pointer to <a href='undocumented#Pixel'>pixel</a> at (<a href='#SkPixmap_addr8_2_x'>x</a>, <a href='#SkPixmap_addr8_2_y'>y</a>) 1143 1144### Example 1145 1146<div><fiddle-embed name="5b986272268ef2c52045c1856f8b6107"> 1147 1148#### Example Output 1149 1150~~~~ 1151pixmap.addr8(1, 2) == &storage[1 + 2 * w] 1152~~~~ 1153 1154</fiddle-embed></div> 1155 1156### See Also 1157 1158<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr8'>writable_addr8</a> 1159 1160<a name='SkPixmap_addr16_2'></a> 1161 1162--- 1163 1164<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1165const uint16_t* <a href='#SkPixmap_addr16'>addr16</a>(int x, int y)const 1166</pre> 1167 1168Returns readable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_addr16_2_x'>x</a>, <a href='#SkPixmap_addr16_2_y'>y</a>). 1169 1170Input is not validated: out of bounds values of <a href='#SkPixmap_addr16_2_x'>x</a> or <a href='#SkPixmap_addr16_2_y'>y</a> trigger an assert() if 1171built with SK_DEBUG defined. 1172 1173Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGB_565_SkColorType'>kRGB_565_SkColorType</a> or 1174<a href='SkImageInfo_Reference#kARGB_4444_SkColorType'>kARGB_4444_SkColorType</a>, and is built with SK_DEBUG defined. 1175 1176### Parameters 1177 1178<table> <tr> <td><a name='SkPixmap_addr16_2_x'><code><strong>x</strong></code></a></td> 1179 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1180 </tr> 1181 <tr> <td><a name='SkPixmap_addr16_2_y'><code><strong>y</strong></code></a></td> 1182 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1183 </tr> 1184</table> 1185 1186### Return Value 1187 1188readable unsigned 16-bit pointer to <a href='undocumented#Pixel'>pixel</a> at (<a href='#SkPixmap_addr16_2_x'>x</a>, <a href='#SkPixmap_addr16_2_y'>y</a>) 1189 1190### Example 1191 1192<div><fiddle-embed name="2c0c88a546d4ef093ab63ff72dac00b9"> 1193 1194#### Example Output 1195 1196~~~~ 1197pixmap.addr16(1, 2) == &storage[1 + 2 * w] 1198~~~~ 1199 1200</fiddle-embed></div> 1201 1202### See Also 1203 1204<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> 1205 1206<a name='SkPixmap_addr32_2'></a> 1207 1208--- 1209 1210<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1211const uint32_t* <a href='#SkPixmap_addr32'>addr32</a>(int x, int y)const 1212</pre> 1213 1214Returns readable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_addr32_2_x'>x</a>, <a href='#SkPixmap_addr32_2_y'>y</a>). 1215 1216Input is not validated: out of bounds values of <a href='#SkPixmap_addr32_2_x'>x</a> or <a href='#SkPixmap_addr32_2_y'>y</a> trigger an assert() if 1217built with SK_DEBUG defined. 1218 1219Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGBA_8888_SkColorType'>kRGBA_8888_SkColorType</a> or 1220<a href='SkImageInfo_Reference#kBGRA_8888_SkColorType'>kBGRA_8888_SkColorType</a>, and is built with SK_DEBUG defined. 1221 1222### Parameters 1223 1224<table> <tr> <td><a name='SkPixmap_addr32_2_x'><code><strong>x</strong></code></a></td> 1225 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1226 </tr> 1227 <tr> <td><a name='SkPixmap_addr32_2_y'><code><strong>y</strong></code></a></td> 1228 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1229 </tr> 1230</table> 1231 1232### Return Value 1233 1234readable unsigned 32-bit pointer to <a href='undocumented#Pixel'>pixel</a> at (<a href='#SkPixmap_addr32_2_x'>x</a>, <a href='#SkPixmap_addr32_2_y'>y</a>) 1235 1236### Example 1237 1238<div><fiddle-embed name="12f8b5ce9fb25604f33df336677f5d62"> 1239 1240#### Example Output 1241 1242~~~~ 1243pixmap.addr32(1, 2) == &storage[1 + 2 * w] 1244~~~~ 1245 1246</fiddle-embed></div> 1247 1248### See Also 1249 1250<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> 1251 1252<a name='SkPixmap_addr64_2'></a> 1253 1254--- 1255 1256<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1257const uint64_t* <a href='#SkPixmap_addr64'>addr64</a>(int x, int y)const 1258</pre> 1259 1260Returns readable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_addr64_2_x'>x</a>, <a href='#SkPixmap_addr64_2_y'>y</a>). 1261 1262Input is not validated: out of bounds values of <a href='#SkPixmap_addr64_2_x'>x</a> or <a href='#SkPixmap_addr64_2_y'>y</a> trigger an assert() if 1263built with SK_DEBUG defined. 1264 1265Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a> and is built 1266with SK_DEBUG defined. 1267 1268### Parameters 1269 1270<table> <tr> <td><a name='SkPixmap_addr64_2_x'><code><strong>x</strong></code></a></td> 1271 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1272 </tr> 1273 <tr> <td><a name='SkPixmap_addr64_2_y'><code><strong>y</strong></code></a></td> 1274 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1275 </tr> 1276</table> 1277 1278### Return Value 1279 1280readable unsigned 64-bit pointer to <a href='undocumented#Pixel'>pixel</a> at (<a href='#SkPixmap_addr64_2_x'>x</a>, <a href='#SkPixmap_addr64_2_y'>y</a>) 1281 1282### Example 1283 1284<div><fiddle-embed name="5449f65fd7673273b0b57807fd3117ff"> 1285 1286#### Example Output 1287 1288~~~~ 1289pixmap.addr64(1, 2) == &storage[1 + 2 * w] 1290~~~~ 1291 1292</fiddle-embed></div> 1293 1294### See Also 1295 1296<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addrF16'>addrF16</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> 1297 1298<a name='SkPixmap_addrF16_2'></a> 1299 1300--- 1301 1302<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1303const uint16_t* <a href='#SkPixmap_addrF16'>addrF16</a>(int x, int y)const 1304</pre> 1305 1306Returns readable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_addrF16_2_x'>x</a>, <a href='#SkPixmap_addrF16_2_y'>y</a>). 1307 1308Input is not validated: out of bounds values of <a href='#SkPixmap_addrF16_2_x'>x</a> or <a href='#SkPixmap_addrF16_2_y'>y</a> trigger an assert() if 1309built with SK_DEBUG defined. 1310 1311Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a> and is built 1312with SK_DEBUG defined. 1313 1314Each unsigned 16-bit word represents one <a href='SkColor_Reference#Color'>color</a> component encoded as a half float. 1315Four words correspond to one <a href='undocumented#Pixel'>pixel</a>. 1316 1317### Parameters 1318 1319<table> <tr> <td><a name='SkPixmap_addrF16_2_x'><code><strong>x</strong></code></a></td> 1320 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1321 </tr> 1322 <tr> <td><a name='SkPixmap_addrF16_2_y'><code><strong>y</strong></code></a></td> 1323 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1324 </tr> 1325</table> 1326 1327### Return Value 1328 1329readable unsigned 16-bit pointer to <a href='undocumented#Pixel'>pixel</a> component at (<a href='#SkPixmap_addrF16_2_x'>x</a>, <a href='#SkPixmap_addrF16_2_y'>y</a>) 1330 1331### Example 1332 1333<div><fiddle-embed name="f6076cad455bc80af5d06eb121d3b6f2"> 1334 1335#### Example Output 1336 1337~~~~ 1338pixmap.addrF16(1, 2) == &storage[1 * wordsPerPixel + 2 * rowWords] 1339~~~~ 1340 1341</fiddle-embed></div> 1342 1343### See Also 1344 1345<a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> <a href='#SkPixmap_addr16'>addr16</a> <a href='#SkPixmap_addr32'>addr32</a> <a href='#SkPixmap_addr64'>addr64</a> <a href='#SkPixmap_getColor'>getColor</a> <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> 1346 1347<a name='Writable_Address'></a> 1348 1349<a name='SkPixmap_writable_addr'></a> 1350 1351--- 1352 1353<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1354void* <a href='#SkPixmap_writable_addr'>writable_addr</a>()const 1355</pre> 1356 1357Returns writable base <a href='undocumented#Pixel'>pixel</a> address. 1358 1359### Return Value 1360 1361writable generic base pointer to pixels 1362 1363### Example 1364 1365<div><fiddle-embed name="74ef460f89ed5904334d0f8883e781c4"> 1366 1367#### Example Output 1368 1369~~~~ 1370pixmap.writable_addr() == (void *)storage 1371pixmap.getColor(0, 1) == 0x00000000 1372pixmap.getColor(0, 0) == 0xFFFFFFFF 1373~~~~ 1374 1375</fiddle-embed></div> 1376 1377### See Also 1378 1379<a href='#SkPixmap_writable_addr8'>writable_addr8</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> <a href='#SkPixmap_writable_addr32'>writable_addr32</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> <a href='#SkPixmap_addr'>addr()</a> 1380 1381<a name='SkPixmap_writable_addr_2'></a> 1382 1383--- 1384 1385<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1386void* <a href='#SkPixmap_writable_addr'>writable_addr</a>(int x, int y)const 1387</pre> 1388 1389Returns writable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_writable_addr_2_x'>x</a>, <a href='#SkPixmap_writable_addr_2_y'>y</a>). 1390 1391Input is not validated: out of bounds values of <a href='#SkPixmap_writable_addr_2_x'>x</a> or <a href='#SkPixmap_writable_addr_2_y'>y</a> trigger an assert() if 1392built with SK_DEBUG defined. Returns zero if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>. 1393 1394### Parameters 1395 1396<table> <tr> <td><a name='SkPixmap_writable_addr_2_x'><code><strong>x</strong></code></a></td> 1397 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1398 </tr> 1399 <tr> <td><a name='SkPixmap_writable_addr_2_y'><code><strong>y</strong></code></a></td> 1400 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1401 </tr> 1402</table> 1403 1404### Return Value 1405 1406writable generic pointer to <a href='undocumented#Pixel'>pixel</a> 1407 1408### Example 1409 1410<div><fiddle-embed name="559eaca89c765bc8466ea1ba3331d4db"> 1411 1412#### Example Output 1413 1414~~~~ 1415pixmap.writable_addr() == (void *)storage 1416pixmap.getColor(0, 0) == 0x00000000 1417pixmap.getColor(1, 2) == 0xFFFFFFFF 1418~~~~ 1419 1420</fiddle-embed></div> 1421 1422### See Also 1423 1424<a href='#SkPixmap_writable_addr8'>writable_addr8</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> <a href='#SkPixmap_writable_addr32'>writable_addr32</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> <a href='#SkPixmap_addr'>addr()</a> 1425 1426<a name='SkPixmap_writable_addr8'></a> 1427 1428--- 1429 1430<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1431uint8_t* <a href='#SkPixmap_writable_addr8'>writable_addr8</a>(int x, int y)const 1432</pre> 1433 1434Returns writable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_writable_addr8_x'>x</a>, <a href='#SkPixmap_writable_addr8_y'>y</a>). Result is addressable as unsigned 14358-bit bytes. Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a> 1436or <a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, and is built with SK_DEBUG defined. 1437 1438One byte corresponds to one <a href='undocumented#Pixel'>pixel</a>. 1439 1440### Parameters 1441 1442<table> <tr> <td><a name='SkPixmap_writable_addr8_x'><code><strong>x</strong></code></a></td> 1443 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1444 </tr> 1445 <tr> <td><a name='SkPixmap_writable_addr8_y'><code><strong>y</strong></code></a></td> 1446 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1447 </tr> 1448</table> 1449 1450### Return Value 1451 1452writable unsigned 8-bit pointer to pixels 1453 1454### Example 1455 1456<div><fiddle-embed name="809284db136748208b3efc31cd89de29"><div>Altering pixels after drawing <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> is not guaranteed to affect subsequent 1457drawing on all platforms. Adding a second <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_installPixels'>installPixels</a> after editing 1458<a href='undocumented#Pixel'>pixel</a> memory is safer. 1459</div></fiddle-embed></div> 1460 1461### See Also 1462 1463<a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> <a href='#SkPixmap_writable_addr32'>writable_addr32</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> <a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr8'>addr8</a> 1464 1465<a name='SkPixmap_writable_addr16'></a> 1466 1467--- 1468 1469<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1470uint16_t* <a href='#SkPixmap_writable_addr16'>writable_addr16</a>(int x, int y)const 1471</pre> 1472 1473Returns <a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_writable_addr16_x'>x</a>, <a href='#SkPixmap_writable_addr16_y'>y</a>). Result is addressable as unsigned 147416-bit words. Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not <a href='SkImageInfo_Reference#kRGB_565_SkColorType'>kRGB_565_SkColorType</a> 1475or <a href='SkImageInfo_Reference#kARGB_4444_SkColorType'>kARGB_4444_SkColorType</a>, and is built with SK_DEBUG defined. 1476 1477One word corresponds to one <a href='undocumented#Pixel'>pixel</a>. 1478 1479### Parameters 1480 1481<table> <tr> <td><a name='SkPixmap_writable_addr16_x'><code><strong>x</strong></code></a></td> 1482 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1483 </tr> 1484 <tr> <td><a name='SkPixmap_writable_addr16_y'><code><strong>y</strong></code></a></td> 1485 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1486 </tr> 1487</table> 1488 1489### Return Value 1490 1491writable unsigned 16-bit pointer to <a href='undocumented#Pixel'>pixel</a> 1492 1493### Example 1494 1495<div><fiddle-embed name="6da54774f6432b46b47ea9013c15f280"><div>Draw a five by five <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, and draw it again with a center black <a href='undocumented#Pixel'>pixel</a>. 1496The low nibble of the 16-bit word is <a href='SkColor_Reference#Alpha'>Alpha</a>. 1497</div></fiddle-embed></div> 1498 1499### See Also 1500 1501<a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr8'>writable_addr8</a> <a href='#SkPixmap_writable_addr32'>writable_addr32</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> <a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr16'>addr16</a> 1502 1503<a name='SkPixmap_writable_addr32'></a> 1504 1505--- 1506 1507<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1508uint32_t* <a href='#SkPixmap_writable_addr32'>writable_addr32</a>(int x, int y)const 1509</pre> 1510 1511Returns writable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_writable_addr32_x'>x</a>, <a href='#SkPixmap_writable_addr32_y'>y</a>). Result is addressable as unsigned 151232-bit words. Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not 1513<a href='SkImageInfo_Reference#kRGBA_8888_SkColorType'>kRGBA_8888_SkColorType</a> or <a href='SkImageInfo_Reference#kBGRA_8888_SkColorType'>kBGRA_8888_SkColorType</a>, and is built with SK_DEBUG 1514defined. 1515 1516One word corresponds to one <a href='undocumented#Pixel'>pixel</a>. 1517 1518### Parameters 1519 1520<table> <tr> <td><a name='SkPixmap_writable_addr32_x'><code><strong>x</strong></code></a></td> 1521 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1522 </tr> 1523 <tr> <td><a name='SkPixmap_writable_addr32_y'><code><strong>y</strong></code></a></td> 1524 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1525 </tr> 1526</table> 1527 1528### Return Value 1529 1530writable unsigned 32-bit pointer to <a href='undocumented#Pixel'>pixel</a> 1531 1532### Example 1533 1534<div><fiddle-embed name="086866243bf9e4c14c3b215a2aa69ad9"></fiddle-embed></div> 1535 1536### See Also 1537 1538<a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr8'>writable_addr8</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> <a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr32'>addr32</a> 1539 1540<a name='SkPixmap_writable_addr64'></a> 1541 1542--- 1543 1544<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1545uint64_t* <a href='#SkPixmap_writable_addr64'>writable_addr64</a>(int x, int y)const 1546</pre> 1547 1548Returns writable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_writable_addr64_x'>x</a>, <a href='#SkPixmap_writable_addr64_y'>y</a>). Result is addressable as unsigned 154964-bit words. Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not 1550<a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a> and is built with SK_DEBUG defined. 1551 1552One word corresponds to one <a href='undocumented#Pixel'>pixel</a>. 1553 1554### Parameters 1555 1556<table> <tr> <td><a name='SkPixmap_writable_addr64_x'><code><strong>x</strong></code></a></td> 1557 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1558 </tr> 1559 <tr> <td><a name='SkPixmap_writable_addr64_y'><code><strong>y</strong></code></a></td> 1560 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1561 </tr> 1562</table> 1563 1564### Return Value 1565 1566writable unsigned 64-bit pointer to <a href='undocumented#Pixel'>pixel</a> 1567 1568### Example 1569 1570<div><fiddle-embed name="de14d8d30e4a7b6462103d0e0dd96b0b"></fiddle-embed></div> 1571 1572### See Also 1573 1574<a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr8'>writable_addr8</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> <a href='#SkPixmap_writable_addr32'>writable_addr32</a> <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a> <a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addr64'>addr64</a> 1575 1576<a name='SkPixmap_writable_addrF16'></a> 1577 1578--- 1579 1580<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1581uint16_t* <a href='#SkPixmap_writable_addrF16'>writable_addrF16</a>(int x, int y)const 1582</pre> 1583 1584Returns writable <a href='undocumented#Pixel'>pixel</a> address at (<a href='#SkPixmap_writable_addrF16_x'>x</a>, <a href='#SkPixmap_writable_addrF16_y'>y</a>). Result is addressable as unsigned 158516-bit words. Will trigger an assert() if <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is not 1586<a href='SkImageInfo_Reference#kRGBA_F16_SkColorType'>kRGBA_F16_SkColorType</a> and is built with SK_DEBUG defined. 1587 1588Each word represents one <a href='SkColor_Reference#Color'>color</a> component encoded as a half float. 1589Four words correspond to one <a href='undocumented#Pixel'>pixel</a>. 1590 1591### Parameters 1592 1593<table> <tr> <td><a name='SkPixmap_writable_addrF16_x'><code><strong>x</strong></code></a></td> 1594 <td>column index, zero or greater, and less than <a href='#SkPixmap_width'>width()</a></td> 1595 </tr> 1596 <tr> <td><a name='SkPixmap_writable_addrF16_y'><code><strong>y</strong></code></a></td> 1597 <td>row index, zero or greater, and less than <a href='#SkPixmap_height'>height()</a></td> 1598 </tr> 1599</table> 1600 1601### Return Value 1602 1603writable unsigned 16-bit pointer to first component of <a href='undocumented#Pixel'>pixel</a> 1604 1605### Example 1606 1607<div><fiddle-embed name="7822d78f5cacf5c04267cbbc6c6d0b80"><div>Left <a href='SkBitmap_Reference#Bitmap'>bitmap</a> is drawn with two pixels defined in half float format. Right <a href='SkBitmap_Reference#Bitmap'>bitmap</a> 1608is drawn after overwriting bottom half float <a href='SkColor_Reference#Color'>color</a> with top half float <a href='SkColor_Reference#Color'>color</a>. 1609</div></fiddle-embed></div> 1610 1611### See Also 1612 1613<a href='#SkPixmap_writable_addr'>writable_addr</a> <a href='#SkPixmap_writable_addr8'>writable_addr8</a> <a href='#SkPixmap_writable_addr16'>writable_addr16</a> <a href='#SkPixmap_writable_addr32'>writable_addr32</a> <a href='#SkPixmap_writable_addr64'>writable_addr64</a> <a href='#SkPixmap_addr'>addr()</a> <a href='#SkPixmap_addrF16'>addrF16</a> 1614 1615<a name='Pixels'></a> 1616 1617<a name='SkPixmap_readPixels'></a> 1618 1619--- 1620 1621<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1622bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& dstInfo, void* dstPixels, size_t dstRowBytes)const 1623</pre> 1624 1625Copies a <a href='SkRect_Reference#SkRect'>SkRect</a> of pixels to <a href='#SkPixmap_readPixels_dstPixels'>dstPixels</a>. Copy starts at (0, 0), and does not 1626exceed <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> (<a href='#SkPixmap_width'>width()</a>, <a href='#SkPixmap_height'>height()</a>). 1627 1628<a href='#SkPixmap_readPixels_dstInfo'>dstInfo</a> specifies width, height, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, and 1629<a href='undocumented#SkColorSpace'>SkColorSpace</a> of destination. <a href='#SkPixmap_readPixels_dstRowBytes'>dstRowBytes</a> specifics the gap from one destination 1630row to the next. Returns true if pixels are copied. Returns false if 1631<a href='#SkPixmap_readPixels_dstInfo'>dstInfo</a> address equals nullptr, or <a href='#SkPixmap_readPixels_dstRowBytes'>dstRowBytes</a> is less than <a href='#SkPixmap_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_minRowBytes'>minRowBytes</a>(). 1632 1633Pixels are copied only if <a href='undocumented#Pixel'>pixel</a> conversion is possible. If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorType'>colorType</a>() is 1634<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, or <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>; <a href='#SkPixmap_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorType'>colorType</a>() must match. 1635If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorType'>colorType</a>() is <a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, <a href='#SkPixmap_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorSpace'>colorSpace</a>() must match. 1636If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_alphaType'>alphaType</a>() is <a href='SkImageInfo_Reference#kOpaque_SkAlphaType'>kOpaque_SkAlphaType</a>, <a href='#SkPixmap_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_alphaType'>alphaType</a>() must 1637match. If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorSpace'>colorSpace</a>() is nullptr, <a href='#SkPixmap_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorSpace'>colorSpace</a>() must match. Returns 1638false if <a href='undocumented#Pixel'>pixel</a> conversion is not possible. 1639 1640Returns false if <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_width'>width()</a> or <a href='#SkPixmap_height'>height()</a> is zero or negative. 1641 1642### Parameters 1643 1644<table> <tr> <td><a name='SkPixmap_readPixels_dstInfo'><code><strong>dstInfo</strong></code></a></td> 1645 <td>destination width, height, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, <a href='undocumented#SkColorSpace'>SkColorSpace</a></td> 1646 </tr> 1647 <tr> <td><a name='SkPixmap_readPixels_dstPixels'><code><strong>dstPixels</strong></code></a></td> 1648 <td>destination <a href='undocumented#Pixel_Storage'>pixel storage</a></td> 1649 </tr> 1650 <tr> <td><a name='SkPixmap_readPixels_dstRowBytes'><code><strong>dstRowBytes</strong></code></a></td> 1651 <td>destination row length</td> 1652 </tr> 1653</table> 1654 1655### Return Value 1656 1657true if pixels are copied to <a href='#SkPixmap_readPixels_dstPixels'>dstPixels</a> 1658 1659### Example 1660 1661<div><fiddle-embed name="df4e355c4845350daede833b4fd21ec1"><div>Transferring the gradient from 8 bits per component to 4 bits per component 1662creates visible banding. 1663</div></fiddle-embed></div> 1664 1665### See Also 1666 1667<a href='#SkPixmap_erase'>erase</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_readPixels'>readPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_readPixels'>readPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_readPixels'>readPixels</a> 1668 1669<a name='SkPixmap_readPixels_2'></a> 1670 1671--- 1672 1673<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1674bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& dstInfo, void* dstPixels, size_t dstRowBytes, int srcX, int srcY)const 1675</pre> 1676 1677Copies a <a href='SkRect_Reference#Rect'>Rect</a> of pixels to <a href='#SkPixmap_readPixels_2_dstPixels'>dstPixels</a>. Copy starts at (<a href='#SkPixmap_readPixels_2_srcX'>srcX</a>, <a href='#SkPixmap_readPixels_2_srcY'>srcY</a>), and does not 1678exceed <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> (<a href='#SkPixmap_width'>width()</a>, <a href='#SkPixmap_height'>height()</a>). 1679 1680<a href='#SkPixmap_readPixels_2_dstInfo'>dstInfo</a> specifies width, height, <a href='#Image_Info_Color_Type'>Color_Type</a>, <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>, and 1681<a href='#Color_Space'>Color_Space</a> of destination. <a href='#SkPixmap_readPixels_2_dstRowBytes'>dstRowBytes</a> specifics the gap from one destination 1682row to the next. Returns true if pixels are copied. Returns false if 1683<a href='#SkPixmap_readPixels_2_dstInfo'>dstInfo</a> has no address, or <a href='#SkPixmap_readPixels_2_dstRowBytes'>dstRowBytes</a> is less than <a href='#SkPixmap_readPixels_2_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_minRowBytes'>minRowBytes</a>(). 1684 1685Pixels are copied only if <a href='undocumented#Pixel'>pixel</a> conversion is possible. If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_colorType'>colorType</a> is 1686<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, or <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>; <a href='#SkPixmap_readPixels_2_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorType'>colorType</a>() must match. 1687If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_colorType'>colorType</a> is <a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, <a href='#SkPixmap_readPixels_2_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorSpace'>colorSpace</a>() must match. 1688If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_alphaType'>alphaType</a> is <a href='SkImageInfo_Reference#kOpaque_SkAlphaType'>kOpaque_SkAlphaType</a>, <a href='#SkPixmap_readPixels_2_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_alphaType'>alphaType</a>() must 1689match. If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_colorSpace'>colorSpace</a> is nullptr, <a href='#SkPixmap_readPixels_2_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorSpace'>colorSpace</a>() must match. Returns 1690false if <a href='undocumented#Pixel'>pixel</a> conversion is not possible. 1691 1692<a href='#SkPixmap_readPixels_2_srcX'>srcX</a> and <a href='#SkPixmap_readPixels_2_srcY'>srcY</a> may be negative to copy only top or left of source. Returns 1693false if <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_width'>width()</a> or <a href='#SkPixmap_height'>height()</a> is zero or negative. Returns false if: 1694 1695<code><a href='undocumented#abs()'>abs</a>(<a href='#SkPixmap_readPixels_2_srcX'>srcX</a>) >= <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_width'>width()</a></code>, or if <code><a href='undocumented#abs()'>abs</a>(<a href='#SkPixmap_readPixels_2_srcY'>srcY</a>) >= <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_height'>height()</a></code>. 1696 1697### Parameters 1698 1699<table> <tr> <td><a name='SkPixmap_readPixels_2_dstInfo'><code><strong>dstInfo</strong></code></a></td> 1700 <td>destination width, height, <a href='#Image_Info_Color_Type'>Color_Type</a>, <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>, <a href='#Color_Space'>Color_Space</a></td> 1701 </tr> 1702 <tr> <td><a name='SkPixmap_readPixels_2_dstPixels'><code><strong>dstPixels</strong></code></a></td> 1703 <td>destination <a href='undocumented#Pixel_Storage'>pixel storage</a></td> 1704 </tr> 1705 <tr> <td><a name='SkPixmap_readPixels_2_dstRowBytes'><code><strong>dstRowBytes</strong></code></a></td> 1706 <td>destination row length</td> 1707 </tr> 1708 <tr> <td><a name='SkPixmap_readPixels_2_srcX'><code><strong>srcX</strong></code></a></td> 1709 <td>column index whose absolute value is less than <a href='#SkPixmap_width'>width()</a></td> 1710 </tr> 1711 <tr> <td><a name='SkPixmap_readPixels_2_srcY'><code><strong>srcY</strong></code></a></td> 1712 <td>row index whose absolute value is less than <a href='#SkPixmap_height'>height()</a></td> 1713 </tr> 1714</table> 1715 1716### Return Value 1717 1718true if pixels are copied to <a href='#SkPixmap_readPixels_2_dstPixels'>dstPixels</a> 1719 1720### Example 1721 1722<div><fiddle-embed name="094ca0bd37588cc7be241bb387a3e17b"></fiddle-embed></div> 1723 1724### See Also 1725 1726<a href='#SkPixmap_erase'>erase</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_readPixels'>readPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_readPixels'>readPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_readPixels'>readPixels</a> 1727 1728<a name='SkPixmap_readPixels_3'></a> 1729 1730--- 1731 1732<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1733bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& dst, int srcX, int srcY)const 1734</pre> 1735 1736Copies a <a href='SkRect_Reference#Rect'>Rect</a> of pixels to <a href='#SkPixmap_readPixels_3_dst'>dst</a>. Copy starts at (<a href='#SkPixmap_readPixels_3_srcX'>srcX</a>, <a href='#SkPixmap_readPixels_3_srcY'>srcY</a>), and does not 1737exceed <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> (<a href='#SkPixmap_width'>width()</a>, <a href='#SkPixmap_height'>height()</a>). <a href='#SkPixmap_readPixels_3_dst'>dst</a> specifies width, height, <a href='#Image_Info_Color_Type'>Color_Type</a>, 1738<a href='#Image_Info_Alpha_Type'>Alpha_Type</a>, and <a href='#Color_Space'>Color_Space</a> of destination. Returns true if pixels are copied. 1739Returns false if <a href='#SkPixmap_readPixels_3_dst'>dst</a>.<a href='#SkPixmap_addr'>addr()</a> equals nullptr, or <a href='#SkPixmap_readPixels_3_dst'>dst</a>.<a href='#SkPixmap_rowBytes'>rowBytes</a>() is less than 1740<a href='#SkPixmap_readPixels_3_dst'>dst</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_minRowBytes'>minRowBytes</a>. 1741 1742Pixels are copied only if <a href='undocumented#Pixel'>pixel</a> conversion is possible. If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_colorType'>colorType</a> is 1743<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, or <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>; <a href='#SkPixmap_readPixels_3_dst'>dst</a>.<a href='#SkPixmap_info'>info()</a>.<a href='#SkImageInfo_colorType'>colorType</a>() must match. 1744If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_colorType'>colorType</a> is <a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, <a href='#SkPixmap_readPixels_3_dst'>dst</a>.<a href='#SkPixmap_info'>info()</a>.<a href='#SkImageInfo_colorSpace'>colorSpace</a>() must match. 1745If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_alphaType'>alphaType</a> is <a href='SkImageInfo_Reference#kOpaque_SkAlphaType'>kOpaque_SkAlphaType</a>, <a href='#SkPixmap_readPixels_3_dst'>dst</a>.<a href='#SkPixmap_info'>info()</a>.<a href='#SkImageInfo_alphaType'>alphaType</a>() must 1746match. If <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_colorSpace'>colorSpace</a> is nullptr, <a href='#SkPixmap_readPixels_3_dst'>dst</a>.<a href='#SkPixmap_info'>info()</a>.<a href='#SkImageInfo_colorSpace'>colorSpace</a>() must match. Returns 1747false if <a href='undocumented#Pixel'>pixel</a> conversion is not possible. 1748 1749<a href='#SkPixmap_readPixels_3_srcX'>srcX</a> and <a href='#SkPixmap_readPixels_3_srcY'>srcY</a> may be negative to copy only top or left of source. Returns 1750false <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_width'>width()</a> or <a href='#SkPixmap_height'>height()</a> is zero or negative. Returns false if: 1751 1752<code><a href='undocumented#abs()'>abs</a>(<a href='#SkPixmap_readPixels_3_srcX'>srcX</a>) >= <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_width'>width()</a></code>, or if <code><a href='undocumented#abs()'>abs</a>(<a href='#SkPixmap_readPixels_3_srcY'>srcY</a>) >= <a href='SkPixmap_Reference#Pixmap'>Pixmap</a> <a href='#SkPixmap_height'>height()</a></code>. 1753 1754### Parameters 1755 1756<table> <tr> <td><a name='SkPixmap_readPixels_3_dst'><code><strong>dst</strong></code></a></td> 1757 <td><a href='#Image_Info'>Image_Info</a> and <a href='undocumented#Pixel'>pixel</a> address to write to</td> 1758 </tr> 1759 <tr> <td><a name='SkPixmap_readPixels_3_srcX'><code><strong>srcX</strong></code></a></td> 1760 <td>column index whose absolute value is less than <a href='#SkPixmap_width'>width()</a></td> 1761 </tr> 1762 <tr> <td><a name='SkPixmap_readPixels_3_srcY'><code><strong>srcY</strong></code></a></td> 1763 <td>row index whose absolute value is less than <a href='#SkPixmap_height'>height()</a></td> 1764 </tr> 1765</table> 1766 1767### Return Value 1768 1769true if pixels are copied to <a href='#SkPixmap_readPixels_3_dst'>dst</a> 1770 1771### Example 1772 1773<div><fiddle-embed name="6ec7f7b2cc163cd29f627eef6d4b061c"></fiddle-embed></div> 1774 1775### See Also 1776 1777<a href='#SkPixmap_erase'>erase</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_readPixels'>readPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_readPixels'>readPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_readPixels'>readPixels</a> 1778 1779<a name='SkPixmap_readPixels_4'></a> 1780 1781--- 1782 1783<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1784bool <a href='#SkPixmap_readPixels'>readPixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& dst)const 1785</pre> 1786 1787Copies pixels inside <a href='#SkPixmap_bounds'>bounds()</a> to <a href='#SkPixmap_readPixels_4_dst'>dst</a>. <a href='#SkPixmap_readPixels_4_dst'>dst</a> specifies width, height, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, 1788<a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, and <a href='undocumented#SkColorSpace'>SkColorSpace</a> of destination. Returns true if pixels are copied. 1789Returns false if <a href='#SkPixmap_readPixels_4_dst'>dst</a> address equals nullptr, or <a href='#SkPixmap_readPixels_4_dst'>dst</a>.<a href='#SkPixmap_rowBytes'>rowBytes</a>() is less than 1790<a href='#SkPixmap_readPixels_4_dst'>dst</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_minRowBytes'>minRowBytes</a>. 1791 1792Pixels are copied only if <a href='undocumented#Pixel'>pixel</a> conversion is possible. If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorType'>colorType</a>() is 1793<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, or <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>; <a href='#SkPixmap_readPixels_4_dst'>dst</a> <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> must match. 1794If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorType'>colorType</a>() is <a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, <a href='#SkPixmap_readPixels_4_dst'>dst</a> <a href='undocumented#SkColorSpace'>SkColorSpace</a> must match. 1795If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_alphaType'>alphaType</a>() is <a href='SkImageInfo_Reference#kOpaque_SkAlphaType'>kOpaque_SkAlphaType</a>, <a href='#SkPixmap_readPixels_4_dst'>dst</a> <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> must 1796match. If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorSpace'>colorSpace</a>() is nullptr, <a href='#SkPixmap_readPixels_4_dst'>dst</a> <a href='undocumented#SkColorSpace'>SkColorSpace</a> must match. Returns 1797false if <a href='undocumented#Pixel'>pixel</a> conversion is not possible. 1798 1799Returns false if <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_width'>width()</a> or <a href='#SkPixmap_height'>height()</a> is zero or negative. 1800 1801### Parameters 1802 1803<table> <tr> <td><a name='SkPixmap_readPixels_4_dst'><code><strong>dst</strong></code></a></td> 1804 <td><a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> and <a href='undocumented#Pixel'>pixel</a> address to write to</td> 1805 </tr> 1806</table> 1807 1808### Return Value 1809 1810true if pixels are copied to <a href='#SkPixmap_readPixels_4_dst'>dst</a> 1811 1812### Example 1813 1814<div><fiddle-embed name="e18549b5ee1039cb61b0bb38c2104fc9"></fiddle-embed></div> 1815 1816### See Also 1817 1818<a href='#SkPixmap_erase'>erase</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_readPixels'>readPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_readPixels'>readPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_readPixels'>readPixels</a> 1819 1820<a name='SkPixmap_scalePixels'></a> 1821 1822--- 1823 1824<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1825bool <a href='#SkPixmap_scalePixels'>scalePixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& dst, <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> filterQuality)const 1826</pre> 1827 1828Copies <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> to <a href='#SkPixmap_scalePixels_dst'>dst</a>, scaling pixels to fit <a href='#SkPixmap_scalePixels_dst'>dst</a>.<a href='#SkPixmap_width'>width()</a> and <a href='#SkPixmap_scalePixels_dst'>dst</a>.<a href='#SkPixmap_height'>height()</a>, and 1829converting pixels to match <a href='#SkPixmap_scalePixels_dst'>dst</a>.<a href='#SkPixmap_colorType'>colorType</a>() and <a href='#SkPixmap_scalePixels_dst'>dst</a>.<a href='#SkPixmap_alphaType'>alphaType</a>(). Returns true if 1830pixels are copied. Returns false if <a href='#SkPixmap_scalePixels_dst'>dst</a> address is nullptr, or <a href='#SkPixmap_scalePixels_dst'>dst</a>.<a href='#SkPixmap_rowBytes'>rowBytes</a>() is 1831less than <a href='#SkPixmap_scalePixels_dst'>dst</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_minRowBytes'>minRowBytes</a>. 1832 1833Pixels are copied only if <a href='undocumented#Pixel'>pixel</a> conversion is possible. If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorType'>colorType</a>() is 1834<a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, or <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>; <a href='#SkPixmap_scalePixels_dst'>dst</a> <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> must match. 1835If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorType'>colorType</a>() is <a href='SkImageInfo_Reference#kGray_8_SkColorType'>kGray_8_SkColorType</a>, <a href='#SkPixmap_scalePixels_dst'>dst</a> <a href='undocumented#SkColorSpace'>SkColorSpace</a> must match. 1836If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_alphaType'>alphaType</a>() is <a href='SkImageInfo_Reference#kOpaque_SkAlphaType'>kOpaque_SkAlphaType</a>, <a href='#SkPixmap_scalePixels_dst'>dst</a> <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> must 1837match. If <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a> <a href='#SkPixmap_colorSpace'>colorSpace</a>() is nullptr, <a href='#SkPixmap_scalePixels_dst'>dst</a> <a href='undocumented#SkColorSpace'>SkColorSpace</a> must match. Returns 1838false if <a href='undocumented#Pixel'>pixel</a> conversion is not possible. 1839 1840Returns false if <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> <a href='#SkPixmap_width'>width()</a> or <a href='#SkPixmap_height'>height()</a> is zero or negative. 1841 1842Scales the <a href='SkImage_Reference#Image'>image</a>, with <a href='#SkPixmap_scalePixels_filterQuality'>filterQuality</a>, to match <a href='#SkPixmap_scalePixels_dst'>dst</a>.<a href='#SkPixmap_width'>width()</a> and <a href='#SkPixmap_scalePixels_dst'>dst</a>.<a href='#SkPixmap_height'>height()</a>. 1843<a href='#SkPixmap_scalePixels_filterQuality'>filterQuality</a> <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a> is fastest, typically implemented with 1844<a href='undocumented#Nearest_Neighbor'>nearest neighbor filter</a>. <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a> is typically implemented with 1845<a href='undocumented#Bilerp'>bilerp filter</a>. <a href='undocumented#kMedium_SkFilterQuality'>kMedium_SkFilterQuality</a> is typically implemented with 1846<a href='undocumented#Bilerp'>bilerp filter</a>, and <a href='undocumented#MipMap'>mip-map filter</a> when <a href='undocumented#Size'>size</a> is reduced. 1847<a href='undocumented#kHigh_SkFilterQuality'>kHigh_SkFilterQuality</a> is slowest, typically implemented with <a href='undocumented#BiCubic'>bicubic filter</a>. 1848 1849### Parameters 1850 1851<table> <tr> <td><a name='SkPixmap_scalePixels_dst'><code><strong>dst</strong></code></a></td> 1852 <td><a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> and <a href='undocumented#Pixel'>pixel</a> address to write to</td> 1853 </tr> 1854 <tr> <td><a name='SkPixmap_scalePixels_filterQuality'><code><strong>filterQuality</strong></code></a></td> 1855 <td>one of: <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a>, <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a>,</td> 1856 </tr> 1857</table> 1858 1859<a href='undocumented#kMedium_SkFilterQuality'>kMedium_SkFilterQuality</a>, <a href='undocumented#kHigh_SkFilterQuality'>kHigh_SkFilterQuality</a> 1860 1861### Return Value 1862 1863true if pixels are scaled to fit <a href='#SkPixmap_scalePixels_dst'>dst</a> 1864 1865### Example 1866 1867<div><fiddle-embed name="8e3c8a9c1d0d2e9b8bf66e24d274f792"></fiddle-embed></div> 1868 1869### See Also 1870 1871<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_scalePixels'>scalePixels</a> 1872 1873<a name='SkPixmap_erase'></a> 1874 1875--- 1876 1877<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1878bool <a href='#SkPixmap_erase'>erase</a>(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& subset)const 1879</pre> 1880 1881Writes <a href='#SkPixmap_erase_color'>color</a> to pixels bounded by <a href='#SkPixmap_erase_subset'>subset</a>; returns true on success. 1882Returns false if <a href='#SkPixmap_colorType'>colorType</a>() is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>, or if <a href='#SkPixmap_erase_subset'>subset</a> does 1883not intersect <a href='#SkPixmap_bounds'>bounds()</a>. 1884 1885### Parameters 1886 1887<table> <tr> <td><a name='SkPixmap_erase_color'><code><strong>color</strong></code></a></td> 1888 <td><a href='undocumented#Unpremultiply'>unpremultiplied</a> <a href='#SkPixmap_erase_color'>color</a> to write</td> 1889 </tr> 1890 <tr> <td><a name='SkPixmap_erase_subset'><code><strong>subset</strong></code></a></td> 1891 <td>bounding integer <a href='SkRect_Reference#SkRect'>SkRect</a> of written pixels</td> 1892 </tr> 1893</table> 1894 1895### Return Value 1896 1897true if pixels are changed 1898 1899### Example 1900 1901<div><fiddle-embed name="a0cdbafed4786788cc90681e7b294234"></fiddle-embed></div> 1902 1903### See Also 1904 1905<a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_erase'>erase</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_clear'>clear</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawColor'>drawColor</a> 1906 1907<a name='SkPixmap_erase_2'></a> 1908 1909--- 1910 1911<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1912bool <a href='#SkPixmap_erase'>erase</a>(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>)const 1913</pre> 1914 1915Writes <a href='#SkPixmap_erase_2_color'>color</a> to pixels inside <a href='#SkPixmap_bounds'>bounds()</a>; returns true on success. 1916Returns false if <a href='#SkPixmap_colorType'>colorType</a>() is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>, or if <a href='#SkPixmap_bounds'>bounds()</a> 1917is empty. 1918 1919### Parameters 1920 1921<table> <tr> <td><a name='SkPixmap_erase_2_color'><code><strong>color</strong></code></a></td> 1922 <td><a href='undocumented#Unpremultiply'>unpremultiplied</a> <a href='#SkPixmap_erase_2_color'>color</a> to write</td> 1923 </tr> 1924</table> 1925 1926### Return Value 1927 1928true if pixels are changed 1929 1930### Example 1931 1932<div><fiddle-embed name="838202e0d49cad2eb3eeb495834f6d63"></fiddle-embed></div> 1933 1934### See Also 1935 1936<a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_erase'>erase</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_clear'>clear</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawColor'>drawColor</a> 1937 1938<a name='SkPixmap_erase_3'></a> 1939 1940--- 1941 1942<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0"> 1943bool <a href='#SkPixmap_erase'>erase</a>(const <a href='SkColor4f_Reference#SkColor4f'>SkColor4f</a>& <a href='SkColor_Reference#Color'>color</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>* subset = nullptr)const 1944</pre> 1945 1946Writes <a href='#SkPixmap_erase_3_color'>color</a> to pixels bounded by <a href='#SkPixmap_erase_3_subset'>subset</a>; returns true on success. 1947if <a href='#SkPixmap_erase_3_subset'>subset</a> is nullptr, writes colors pixels inside <a href='#SkPixmap_bounds'>bounds()</a>. Returns false if 1948<a href='#SkPixmap_colorType'>colorType</a>() is <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>, if <a href='#SkPixmap_erase_3_subset'>subset</a> is not nullptr and does 1949not intersect <a href='#SkPixmap_bounds'>bounds()</a>, or if <a href='#SkPixmap_erase_3_subset'>subset</a> is nullptr and <a href='#SkPixmap_bounds'>bounds()</a> is empty. 1950 1951### Parameters 1952 1953<table> <tr> <td><a name='SkPixmap_erase_3_color'><code><strong>color</strong></code></a></td> 1954 <td><a href='undocumented#Unpremultiply'>unpremultiplied</a> <a href='#SkPixmap_erase_3_color'>color</a> to write</td> 1955 </tr> 1956 <tr> <td><a name='SkPixmap_erase_3_subset'><code><strong>subset</strong></code></a></td> 1957 <td>bounding integer <a href='SkRect_Reference#SkRect'>SkRect</a> of pixels to write; may be nullptr</td> 1958 </tr> 1959</table> 1960 1961### Return Value 1962 1963true if pixels are changed 1964 1965### Example 1966 1967<div><fiddle-embed name="f884f3f46a565f052a5e252ae2f36e9b"></fiddle-embed></div> 1968 1969### See Also 1970 1971<a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_erase'>erase</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_clear'>clear</a> <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>::<a href='#SkCanvas_drawColor'>drawColor</a> 1972 1973