1 // Copyright 2016 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "core/fxge/cfx_renderdevice.h"
8
9 #include <algorithm>
10 #include <memory>
11 #include <utility>
12 #include <vector>
13
14 #include "core/fxcrt/fx_safe_types.h"
15 #include "core/fxge/cfx_facecache.h"
16 #include "core/fxge/cfx_fxgedevice.h"
17 #include "core/fxge/cfx_graphstatedata.h"
18 #include "core/fxge/cfx_pathdata.h"
19 #include "core/fxge/ifx_renderdevicedriver.h"
20
21 #if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
22 #include "third_party/skia/include/core/SkTypes.h"
23 #endif
24
25 namespace {
26
AdjustGlyphSpace(std::vector<FXTEXT_GLYPHPOS> * pGlyphAndPos)27 void AdjustGlyphSpace(std::vector<FXTEXT_GLYPHPOS>* pGlyphAndPos) {
28 ASSERT(pGlyphAndPos->size() > 1);
29 std::vector<FXTEXT_GLYPHPOS>& glyphs = *pGlyphAndPos;
30 bool bVertical = glyphs.back().m_Origin.x == glyphs.front().m_Origin.x;
31 if (!bVertical && (glyphs.back().m_Origin.y != glyphs.front().m_Origin.y))
32 return;
33
34 for (size_t i = glyphs.size() - 1; i > 1; --i) {
35 FXTEXT_GLYPHPOS& next = glyphs[i];
36 int next_origin = bVertical ? next.m_Origin.y : next.m_Origin.x;
37 FX_FLOAT next_origin_f = bVertical ? next.m_fOrigin.y : next.m_fOrigin.x;
38
39 FXTEXT_GLYPHPOS& current = glyphs[i - 1];
40 int& current_origin = bVertical ? current.m_Origin.y : current.m_Origin.x;
41 FX_FLOAT current_origin_f =
42 bVertical ? current.m_fOrigin.y : current.m_fOrigin.x;
43
44 int space = next_origin - current_origin;
45 FX_FLOAT space_f = next_origin_f - current_origin_f;
46 FX_FLOAT error =
47 FXSYS_fabs(space_f) - FXSYS_fabs(static_cast<FX_FLOAT>(space));
48 if (error > 0.5f)
49 current_origin += space > 0 ? -1 : 1;
50 }
51 }
52
53 const uint8_t g_TextGammaAdjust[256] = {
54 0, 2, 3, 4, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18,
55 19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35,
56 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52,
57 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
58 68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
59 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
60 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
61 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128,
62 129, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142,
63 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 156,
64 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171,
65 172, 173, 174, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185,
66 186, 187, 188, 189, 190, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199,
67 200, 201, 202, 203, 204, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213,
68 214, 215, 216, 217, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227,
69 228, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 239, 240,
70 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 250, 251, 252, 253, 254,
71 255,
72 };
73
TextGammaAdjust(int value)74 int TextGammaAdjust(int value) {
75 ASSERT(value >= 0);
76 ASSERT(value <= 255);
77 return g_TextGammaAdjust[value];
78 }
79
CalcAlpha(int src,int alpha)80 int CalcAlpha(int src, int alpha) {
81 return src * alpha / 255;
82 }
83
Merge(uint8_t src,int channel,int alpha,uint8_t * dest)84 void Merge(uint8_t src, int channel, int alpha, uint8_t* dest) {
85 *dest = FXDIB_ALPHA_MERGE(*dest, channel, CalcAlpha(src, alpha));
86 }
87
MergeGammaAdjust(uint8_t src,int channel,int alpha,uint8_t * dest)88 void MergeGammaAdjust(uint8_t src, int channel, int alpha, uint8_t* dest) {
89 *dest =
90 FXDIB_ALPHA_MERGE(*dest, channel, CalcAlpha(TextGammaAdjust(src), alpha));
91 }
92
MergeGammaAdjustBgr(const uint8_t * src,int r,int g,int b,int a,uint8_t * dest)93 void MergeGammaAdjustBgr(const uint8_t* src,
94 int r,
95 int g,
96 int b,
97 int a,
98 uint8_t* dest) {
99 MergeGammaAdjust(src[0], b, a, &dest[0]);
100 MergeGammaAdjust(src[1], g, a, &dest[1]);
101 MergeGammaAdjust(src[2], r, a, &dest[2]);
102 }
103
MergeGammaAdjustRgb(const uint8_t * src,int r,int g,int b,int a,uint8_t * dest)104 void MergeGammaAdjustRgb(const uint8_t* src,
105 int r,
106 int g,
107 int b,
108 int a,
109 uint8_t* dest) {
110 MergeGammaAdjust(src[2], b, a, &dest[0]);
111 MergeGammaAdjust(src[1], g, a, &dest[1]);
112 MergeGammaAdjust(src[0], r, a, &dest[2]);
113 }
114
AverageRgb(const uint8_t * src)115 int AverageRgb(const uint8_t* src) {
116 return (src[0] + src[1] + src[2]) / 3;
117 }
118
CalculateDestAlpha(uint8_t back_alpha,int src_alpha)119 uint8_t CalculateDestAlpha(uint8_t back_alpha, int src_alpha) {
120 return back_alpha + src_alpha - back_alpha * src_alpha / 255;
121 }
122
ApplyDestAlpha(uint8_t back_alpha,int src_alpha,int r,int g,int b,uint8_t * dest)123 void ApplyDestAlpha(uint8_t back_alpha,
124 int src_alpha,
125 int r,
126 int g,
127 int b,
128 uint8_t* dest) {
129 uint8_t dest_alpha = CalculateDestAlpha(back_alpha, src_alpha);
130 int alpha_ratio = src_alpha * 255 / dest_alpha;
131 dest[0] = FXDIB_ALPHA_MERGE(dest[0], b, alpha_ratio);
132 dest[1] = FXDIB_ALPHA_MERGE(dest[1], g, alpha_ratio);
133 dest[2] = FXDIB_ALPHA_MERGE(dest[2], r, alpha_ratio);
134 dest[3] = dest_alpha;
135 }
136
NormalizeRgbDst(int src_value,int r,int g,int b,int a,uint8_t * dest)137 void NormalizeRgbDst(int src_value, int r, int g, int b, int a, uint8_t* dest) {
138 int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a);
139 dest[0] = FXDIB_ALPHA_MERGE(dest[0], b, src_alpha);
140 dest[1] = FXDIB_ALPHA_MERGE(dest[1], g, src_alpha);
141 dest[2] = FXDIB_ALPHA_MERGE(dest[2], r, src_alpha);
142 }
143
NormalizeRgbSrc(int src_value,int r,int g,int b,int a,uint8_t * dest)144 void NormalizeRgbSrc(int src_value, int r, int g, int b, int a, uint8_t* dest) {
145 int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a);
146 if (src_alpha == 0)
147 return;
148
149 dest[0] = FXDIB_ALPHA_MERGE(dest[0], b, src_alpha);
150 dest[1] = FXDIB_ALPHA_MERGE(dest[1], g, src_alpha);
151 dest[2] = FXDIB_ALPHA_MERGE(dest[2], r, src_alpha);
152 }
153
NormalizeArgbDest(int src_value,int r,int g,int b,int a,uint8_t * dest)154 void NormalizeArgbDest(int src_value,
155 int r,
156 int g,
157 int b,
158 int a,
159 uint8_t* dest) {
160 int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a);
161 uint8_t back_alpha = dest[3];
162 if (back_alpha == 0) {
163 FXARGB_SETDIB(dest, FXARGB_MAKE(src_alpha, r, g, b));
164 } else if (src_alpha != 0) {
165 ApplyDestAlpha(back_alpha, src_alpha, r, g, b, dest);
166 }
167 }
168
NormalizeArgbSrc(int src_value,int r,int g,int b,int a,uint8_t * dest)169 void NormalizeArgbSrc(int src_value,
170 int r,
171 int g,
172 int b,
173 int a,
174 uint8_t* dest) {
175 int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a);
176 if (src_alpha == 0)
177 return;
178
179 uint8_t back_alpha = dest[3];
180 if (back_alpha == 0) {
181 FXARGB_SETDIB(dest, FXARGB_MAKE(src_alpha, r, g, b));
182 } else {
183 ApplyDestAlpha(back_alpha, src_alpha, r, g, b, dest);
184 }
185 }
186
NextPixel(uint8_t ** src_scan,uint8_t ** dst_scan,int bpp)187 void NextPixel(uint8_t** src_scan, uint8_t** dst_scan, int bpp) {
188 *src_scan += 3;
189 *dst_scan += bpp;
190 }
191
SetAlpha(uint8_t * alpha)192 void SetAlpha(uint8_t* alpha) {
193 alpha[3] = 255;
194 }
195
SetAlphaDoNothing(uint8_t * alpha)196 void SetAlphaDoNothing(uint8_t* alpha) {}
197
DrawNormalTextHelper(CFX_DIBitmap * bitmap,const CFX_DIBitmap * pGlyph,int nrows,int left,int top,int start_col,int end_col,bool bNormal,bool bBGRStripe,int x_subpixel,int a,int r,int g,int b)198 void DrawNormalTextHelper(CFX_DIBitmap* bitmap,
199 const CFX_DIBitmap* pGlyph,
200 int nrows,
201 int left,
202 int top,
203 int start_col,
204 int end_col,
205 bool bNormal,
206 bool bBGRStripe,
207 int x_subpixel,
208 int a,
209 int r,
210 int g,
211 int b) {
212 const bool has_alpha = bitmap->GetFormat() == FXDIB_Argb;
213 uint8_t* src_buf = pGlyph->GetBuffer();
214 int src_pitch = pGlyph->GetPitch();
215 uint8_t* dest_buf = bitmap->GetBuffer();
216 int dest_pitch = bitmap->GetPitch();
217 const int Bpp = has_alpha ? 4 : bitmap->GetBPP() / 8;
218 auto* pNormalizeSrcFunc = has_alpha ? &NormalizeArgbSrc : &NormalizeRgbDst;
219 auto* pNormalizeDstFunc = has_alpha ? &NormalizeArgbDest : &NormalizeRgbSrc;
220 auto* pSetAlpha = has_alpha ? &SetAlpha : &SetAlphaDoNothing;
221
222 for (int row = 0; row < nrows; row++) {
223 int dest_row = row + top;
224 if (dest_row < 0 || dest_row >= bitmap->GetHeight())
225 continue;
226
227 uint8_t* src_scan = src_buf + row * src_pitch + (start_col - left) * 3;
228 uint8_t* dest_scan = dest_buf + dest_row * dest_pitch + start_col * Bpp;
229 if (bBGRStripe) {
230 if (x_subpixel == 0) {
231 for (int col = start_col; col < end_col; col++) {
232 if (has_alpha) {
233 Merge(src_scan[2], r, a, &dest_scan[2]);
234 Merge(src_scan[1], g, a, &dest_scan[1]);
235 Merge(src_scan[0], b, a, &dest_scan[0]);
236 } else {
237 MergeGammaAdjustBgr(&src_scan[0], r, g, b, a, &dest_scan[0]);
238 }
239 pSetAlpha(dest_scan);
240 NextPixel(&src_scan, &dest_scan, Bpp);
241 }
242 } else if (x_subpixel == 1) {
243 MergeGammaAdjust(src_scan[1], r, a, &dest_scan[2]);
244 MergeGammaAdjust(src_scan[0], g, a, &dest_scan[1]);
245 if (start_col > left)
246 MergeGammaAdjust(src_scan[-1], b, a, &dest_scan[0]);
247 pSetAlpha(dest_scan);
248 NextPixel(&src_scan, &dest_scan, Bpp);
249 for (int col = start_col + 1; col < end_col - 1; col++) {
250 MergeGammaAdjustBgr(&src_scan[-1], r, g, b, a, &dest_scan[0]);
251 pSetAlpha(dest_scan);
252 NextPixel(&src_scan, &dest_scan, Bpp);
253 }
254 } else {
255 MergeGammaAdjust(src_scan[0], r, a, &dest_scan[2]);
256 if (start_col > left) {
257 MergeGammaAdjust(src_scan[-1], g, a, &dest_scan[1]);
258 MergeGammaAdjust(src_scan[-2], b, a, &dest_scan[0]);
259 }
260 pSetAlpha(dest_scan);
261 NextPixel(&src_scan, &dest_scan, Bpp);
262 for (int col = start_col + 1; col < end_col - 1; col++) {
263 MergeGammaAdjustBgr(&src_scan[-2], r, g, b, a, &dest_scan[0]);
264 pSetAlpha(dest_scan);
265 NextPixel(&src_scan, &dest_scan, Bpp);
266 }
267 }
268 } else {
269 if (x_subpixel == 0) {
270 for (int col = start_col; col < end_col; col++) {
271 if (bNormal) {
272 int src_value = AverageRgb(&src_scan[0]);
273 pNormalizeDstFunc(src_value, r, g, b, a, dest_scan);
274 } else {
275 MergeGammaAdjustRgb(&src_scan[0], r, g, b, a, &dest_scan[0]);
276 pSetAlpha(dest_scan);
277 }
278 NextPixel(&src_scan, &dest_scan, Bpp);
279 }
280 } else if (x_subpixel == 1) {
281 if (bNormal) {
282 int src_value = start_col > left ? AverageRgb(&src_scan[-1])
283 : (src_scan[0] + src_scan[1]) / 3;
284 pNormalizeSrcFunc(src_value, r, g, b, a, dest_scan);
285 } else {
286 if (start_col > left)
287 MergeGammaAdjust(src_scan[-1], r, a, &dest_scan[2]);
288 MergeGammaAdjust(src_scan[0], g, a, &dest_scan[1]);
289 MergeGammaAdjust(src_scan[1], b, a, &dest_scan[0]);
290 pSetAlpha(dest_scan);
291 }
292 NextPixel(&src_scan, &dest_scan, Bpp);
293 for (int col = start_col + 1; col < end_col; col++) {
294 if (bNormal) {
295 int src_value = AverageRgb(&src_scan[-1]);
296 pNormalizeDstFunc(src_value, r, g, b, a, dest_scan);
297 } else {
298 MergeGammaAdjustRgb(&src_scan[-1], r, g, b, a, &dest_scan[0]);
299 pSetAlpha(dest_scan);
300 }
301 NextPixel(&src_scan, &dest_scan, Bpp);
302 }
303 } else {
304 if (bNormal) {
305 int src_value =
306 start_col > left ? AverageRgb(&src_scan[-2]) : src_scan[0] / 3;
307 pNormalizeSrcFunc(src_value, r, g, b, a, dest_scan);
308 } else {
309 if (start_col > left) {
310 MergeGammaAdjust(src_scan[-2], r, a, &dest_scan[2]);
311 MergeGammaAdjust(src_scan[-1], g, a, &dest_scan[1]);
312 }
313 MergeGammaAdjust(src_scan[0], b, a, &dest_scan[0]);
314 pSetAlpha(dest_scan);
315 }
316 NextPixel(&src_scan, &dest_scan, Bpp);
317 for (int col = start_col + 1; col < end_col; col++) {
318 if (bNormal) {
319 int src_value = AverageRgb(&src_scan[-2]);
320 pNormalizeDstFunc(src_value, r, g, b, a, dest_scan);
321 } else {
322 MergeGammaAdjustRgb(&src_scan[-2], r, g, b, a, &dest_scan[0]);
323 pSetAlpha(dest_scan);
324 }
325 NextPixel(&src_scan, &dest_scan, Bpp);
326 }
327 }
328 }
329 }
330 }
331
ShouldDrawDeviceText(const CFX_Font * pFont,uint32_t text_flags)332 bool ShouldDrawDeviceText(const CFX_Font* pFont, uint32_t text_flags) {
333 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
334 if (text_flags & FXFONT_CIDFONT)
335 return false;
336
337 const CFX_ByteString bsPsName = pFont->GetPsName();
338 if (bsPsName.Find("+ZJHL") != -1)
339 return false;
340
341 if (bsPsName == "CNAAJI+cmex10")
342 return false;
343 #endif
344 return true;
345 }
346
347 } // namespace
348
FXTEXT_CHARPOS()349 FXTEXT_CHARPOS::FXTEXT_CHARPOS()
350 : m_GlyphIndex(0),
351 m_FontCharWidth(0),
352 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
353 m_ExtGID(0),
354 #endif
355 m_FallbackFontPosition(0),
356 m_bGlyphAdjust(false),
357 m_bFontStyle(false) {
358 }
359
360 FXTEXT_CHARPOS::FXTEXT_CHARPOS(const FXTEXT_CHARPOS&) = default;
361
~FXTEXT_CHARPOS()362 FXTEXT_CHARPOS::~FXTEXT_CHARPOS(){};
363
CFX_RenderDevice()364 CFX_RenderDevice::CFX_RenderDevice()
365 : m_pBitmap(nullptr),
366 m_Width(0),
367 m_Height(0),
368 m_bpp(0),
369 m_RenderCaps(0),
370 m_DeviceClass(0) {}
371
~CFX_RenderDevice()372 CFX_RenderDevice::~CFX_RenderDevice() {
373 #if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
374 Flush();
375 #endif
376 }
377
378 #if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
Flush()379 void CFX_RenderDevice::Flush() {
380 m_pDeviceDriver.reset();
381 }
382 #endif
383
SetDeviceDriver(std::unique_ptr<IFX_RenderDeviceDriver> pDriver)384 void CFX_RenderDevice::SetDeviceDriver(
385 std::unique_ptr<IFX_RenderDeviceDriver> pDriver) {
386 m_pDeviceDriver = std::move(pDriver);
387 InitDeviceInfo();
388 }
389
InitDeviceInfo()390 void CFX_RenderDevice::InitDeviceInfo() {
391 m_Width = m_pDeviceDriver->GetDeviceCaps(FXDC_PIXEL_WIDTH);
392 m_Height = m_pDeviceDriver->GetDeviceCaps(FXDC_PIXEL_HEIGHT);
393 m_bpp = m_pDeviceDriver->GetDeviceCaps(FXDC_BITS_PIXEL);
394 m_RenderCaps = m_pDeviceDriver->GetDeviceCaps(FXDC_RENDER_CAPS);
395 m_DeviceClass = m_pDeviceDriver->GetDeviceCaps(FXDC_DEVICE_CLASS);
396 if (!m_pDeviceDriver->GetClipBox(&m_ClipBox)) {
397 m_ClipBox.left = 0;
398 m_ClipBox.top = 0;
399 m_ClipBox.right = m_Width;
400 m_ClipBox.bottom = m_Height;
401 }
402 }
403
SaveState()404 void CFX_RenderDevice::SaveState() {
405 m_pDeviceDriver->SaveState();
406 }
407
RestoreState(bool bKeepSaved)408 void CFX_RenderDevice::RestoreState(bool bKeepSaved) {
409 m_pDeviceDriver->RestoreState(bKeepSaved);
410 UpdateClipBox();
411 }
412
GetDeviceCaps(int caps_id) const413 int CFX_RenderDevice::GetDeviceCaps(int caps_id) const {
414 return m_pDeviceDriver->GetDeviceCaps(caps_id);
415 }
GetCTM() const416 CFX_Matrix CFX_RenderDevice::GetCTM() const {
417 return m_pDeviceDriver->GetCTM();
418 }
419
CreateCompatibleBitmap(CFX_DIBitmap * pDIB,int width,int height) const420 bool CFX_RenderDevice::CreateCompatibleBitmap(CFX_DIBitmap* pDIB,
421 int width,
422 int height) const {
423 if (m_RenderCaps & FXRC_CMYK_OUTPUT) {
424 return pDIB->Create(width, height, m_RenderCaps & FXRC_ALPHA_OUTPUT
425 ? FXDIB_Cmyka
426 : FXDIB_Cmyk);
427 }
428 if (m_RenderCaps & FXRC_BYTEMASK_OUTPUT)
429 return pDIB->Create(width, height, FXDIB_8bppMask);
430 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_PATHS_
431 return pDIB->Create(width, height, m_RenderCaps & FXRC_ALPHA_OUTPUT
432 ? FXDIB_Argb
433 : FXDIB_Rgb32);
434 #else
435 return pDIB->Create(
436 width, height, m_RenderCaps & FXRC_ALPHA_OUTPUT ? FXDIB_Argb : FXDIB_Rgb);
437 #endif
438 }
439
SetClip_PathFill(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device,int fill_mode)440 bool CFX_RenderDevice::SetClip_PathFill(const CFX_PathData* pPathData,
441 const CFX_Matrix* pObject2Device,
442 int fill_mode) {
443 if (!m_pDeviceDriver->SetClip_PathFill(pPathData, pObject2Device,
444 fill_mode)) {
445 return false;
446 }
447 UpdateClipBox();
448 return true;
449 }
450
SetClip_PathStroke(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device,const CFX_GraphStateData * pGraphState)451 bool CFX_RenderDevice::SetClip_PathStroke(
452 const CFX_PathData* pPathData,
453 const CFX_Matrix* pObject2Device,
454 const CFX_GraphStateData* pGraphState) {
455 if (!m_pDeviceDriver->SetClip_PathStroke(pPathData, pObject2Device,
456 pGraphState)) {
457 return false;
458 }
459 UpdateClipBox();
460 return true;
461 }
462
SetClip_Rect(const FX_RECT & rect)463 bool CFX_RenderDevice::SetClip_Rect(const FX_RECT& rect) {
464 CFX_PathData path;
465 path.AppendRect(rect.left, rect.bottom, rect.right, rect.top);
466 if (!SetClip_PathFill(&path, nullptr, FXFILL_WINDING))
467 return false;
468
469 UpdateClipBox();
470 return true;
471 }
472
UpdateClipBox()473 void CFX_RenderDevice::UpdateClipBox() {
474 if (m_pDeviceDriver->GetClipBox(&m_ClipBox))
475 return;
476 m_ClipBox.left = 0;
477 m_ClipBox.top = 0;
478 m_ClipBox.right = m_Width;
479 m_ClipBox.bottom = m_Height;
480 }
481
DrawPathWithBlend(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device,const CFX_GraphStateData * pGraphState,uint32_t fill_color,uint32_t stroke_color,int fill_mode,int blend_type)482 bool CFX_RenderDevice::DrawPathWithBlend(const CFX_PathData* pPathData,
483 const CFX_Matrix* pObject2Device,
484 const CFX_GraphStateData* pGraphState,
485 uint32_t fill_color,
486 uint32_t stroke_color,
487 int fill_mode,
488 int blend_type) {
489 uint8_t stroke_alpha = pGraphState ? FXARGB_A(stroke_color) : 0;
490 uint8_t fill_alpha = (fill_mode & 3) ? FXARGB_A(fill_color) : 0;
491 const std::vector<FX_PATHPOINT>& pPoints = pPathData->GetPoints();
492 if (stroke_alpha == 0 && pPoints.size() == 2) {
493 CFX_PointF pos1 = pPoints[0].m_Point;
494 CFX_PointF pos2 = pPoints[1].m_Point;
495 if (pObject2Device) {
496 pos1 = pObject2Device->Transform(pos1);
497 pos2 = pObject2Device->Transform(pos2);
498 }
499 DrawCosmeticLine(pos1.x, pos1.y, pos2.x, pos2.y, fill_color, fill_mode,
500 blend_type);
501 return true;
502 }
503
504 if ((pPoints.size() == 5 || pPoints.size() == 4) && stroke_alpha == 0) {
505 CFX_FloatRect rect_f;
506 if (!(fill_mode & FXFILL_RECT_AA) &&
507 pPathData->IsRect(pObject2Device, &rect_f)) {
508 FX_RECT rect_i = rect_f.GetOuterRect();
509
510 // Depending on the top/bottom, left/right values of the rect it's
511 // possible to overflow the Width() and Height() calculations. Check that
512 // the rect will have valid dimension before continuing.
513 if (!rect_i.Valid())
514 return false;
515
516 int width = (int)FXSYS_ceil(rect_f.right - rect_f.left);
517 if (width < 1) {
518 width = 1;
519 if (rect_i.left == rect_i.right)
520 rect_i.right++;
521 }
522 int height = (int)FXSYS_ceil(rect_f.top - rect_f.bottom);
523 if (height < 1) {
524 height = 1;
525 if (rect_i.bottom == rect_i.top)
526 rect_i.bottom++;
527 }
528 if (rect_i.Width() >= width + 1) {
529 if (rect_f.left - (FX_FLOAT)(rect_i.left) >
530 (FX_FLOAT)(rect_i.right) - rect_f.right) {
531 rect_i.left++;
532 } else {
533 rect_i.right--;
534 }
535 }
536 if (rect_i.Height() >= height + 1) {
537 if (rect_f.top - (FX_FLOAT)(rect_i.top) >
538 (FX_FLOAT)(rect_i.bottom) - rect_f.bottom) {
539 rect_i.top++;
540 } else {
541 rect_i.bottom--;
542 }
543 }
544 if (FillRectWithBlend(&rect_i, fill_color, blend_type))
545 return true;
546 }
547 }
548 if ((fill_mode & 3) && stroke_alpha == 0 && !(fill_mode & FX_FILL_STROKE) &&
549 !(fill_mode & FX_FILL_TEXT_MODE)) {
550 CFX_PathData newPath;
551 bool bThin = false;
552 bool setIdentity = false;
553 if (pPathData->GetZeroAreaPath(pObject2Device,
554 !!m_pDeviceDriver->GetDriverType(), &newPath,
555 &bThin, &setIdentity)) {
556 CFX_GraphStateData graphState;
557 graphState.m_LineWidth = 0.0f;
558
559 uint32_t strokecolor = fill_color;
560 if (bThin)
561 strokecolor = (((fill_alpha >> 2) << 24) | (strokecolor & 0x00ffffff));
562
563 const CFX_Matrix* pMatrix = nullptr;
564 if (pObject2Device && !pObject2Device->IsIdentity() && !setIdentity)
565 pMatrix = pObject2Device;
566
567 int smooth_path = FX_ZEROAREA_FILL;
568 if (fill_mode & FXFILL_NOPATHSMOOTH)
569 smooth_path |= FXFILL_NOPATHSMOOTH;
570
571 m_pDeviceDriver->DrawPath(&newPath, pMatrix, &graphState, 0, strokecolor,
572 smooth_path, blend_type);
573 }
574 }
575 if ((fill_mode & 3) && fill_alpha && stroke_alpha < 0xff &&
576 (fill_mode & FX_FILL_STROKE)) {
577 if (m_RenderCaps & FXRC_FILLSTROKE_PATH) {
578 return m_pDeviceDriver->DrawPath(pPathData, pObject2Device, pGraphState,
579 fill_color, stroke_color, fill_mode,
580 blend_type);
581 }
582 return DrawFillStrokePath(pPathData, pObject2Device, pGraphState,
583 fill_color, stroke_color, fill_mode, blend_type);
584 }
585 return m_pDeviceDriver->DrawPath(pPathData, pObject2Device, pGraphState,
586 fill_color, stroke_color, fill_mode,
587 blend_type);
588 }
589
590 // This can be removed once PDFium entirely relies on Skia
DrawFillStrokePath(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device,const CFX_GraphStateData * pGraphState,uint32_t fill_color,uint32_t stroke_color,int fill_mode,int blend_type)591 bool CFX_RenderDevice::DrawFillStrokePath(const CFX_PathData* pPathData,
592 const CFX_Matrix* pObject2Device,
593 const CFX_GraphStateData* pGraphState,
594 uint32_t fill_color,
595 uint32_t stroke_color,
596 int fill_mode,
597 int blend_type) {
598 if (!(m_RenderCaps & FXRC_GET_BITS))
599 return false;
600 CFX_FloatRect bbox;
601 if (pGraphState) {
602 bbox = pPathData->GetBoundingBox(pGraphState->m_LineWidth,
603 pGraphState->m_MiterLimit);
604 } else {
605 bbox = pPathData->GetBoundingBox();
606 }
607 if (pObject2Device)
608 pObject2Device->TransformRect(bbox);
609
610 CFX_Matrix ctm = GetCTM();
611 FX_FLOAT fScaleX = FXSYS_fabs(ctm.a);
612 FX_FLOAT fScaleY = FXSYS_fabs(ctm.d);
613 FX_RECT rect = bbox.GetOuterRect();
614 CFX_DIBitmap bitmap, Backdrop;
615 if (!CreateCompatibleBitmap(&bitmap, FXSYS_round(rect.Width() * fScaleX),
616 FXSYS_round(rect.Height() * fScaleY))) {
617 return false;
618 }
619 if (bitmap.HasAlpha()) {
620 bitmap.Clear(0);
621 Backdrop.Copy(&bitmap);
622 } else {
623 if (!m_pDeviceDriver->GetDIBits(&bitmap, rect.left, rect.top))
624 return false;
625 Backdrop.Copy(&bitmap);
626 }
627 CFX_FxgeDevice bitmap_device;
628 bitmap_device.Attach(&bitmap, false, &Backdrop, true);
629 CFX_Matrix matrix;
630 if (pObject2Device)
631 matrix = *pObject2Device;
632 matrix.Translate(-rect.left, -rect.top);
633 matrix.Concat(CFX_Matrix(fScaleX, 0, 0, fScaleY, 0, 0));
634 if (!bitmap_device.GetDeviceDriver()->DrawPath(
635 pPathData, &matrix, pGraphState, fill_color, stroke_color, fill_mode,
636 blend_type)) {
637 return false;
638 }
639 #if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
640 bitmap_device.GetDeviceDriver()->Flush();
641 #endif
642 FX_RECT src_rect(0, 0, FXSYS_round(rect.Width() * fScaleX),
643 FXSYS_round(rect.Height() * fScaleY));
644 return m_pDeviceDriver->SetDIBits(&bitmap, 0, &src_rect, rect.left, rect.top,
645 FXDIB_BLEND_NORMAL);
646 }
647
SetPixel(int x,int y,uint32_t color)648 bool CFX_RenderDevice::SetPixel(int x, int y, uint32_t color) {
649 if (m_pDeviceDriver->SetPixel(x, y, color))
650 return true;
651
652 FX_RECT rect(x, y, x + 1, y + 1);
653 return FillRectWithBlend(&rect, color, FXDIB_BLEND_NORMAL);
654 }
655
FillRectWithBlend(const FX_RECT * pRect,uint32_t fill_color,int blend_type)656 bool CFX_RenderDevice::FillRectWithBlend(const FX_RECT* pRect,
657 uint32_t fill_color,
658 int blend_type) {
659 if (m_pDeviceDriver->FillRectWithBlend(pRect, fill_color, blend_type))
660 return true;
661
662 if (!(m_RenderCaps & FXRC_GET_BITS))
663 return false;
664
665 CFX_DIBitmap bitmap;
666 if (!CreateCompatibleBitmap(&bitmap, pRect->Width(), pRect->Height()))
667 return false;
668
669 if (!m_pDeviceDriver->GetDIBits(&bitmap, pRect->left, pRect->top))
670 return false;
671
672 if (!bitmap.CompositeRect(0, 0, pRect->Width(), pRect->Height(), fill_color,
673 0, nullptr)) {
674 return false;
675 }
676 FX_RECT src_rect(0, 0, pRect->Width(), pRect->Height());
677 m_pDeviceDriver->SetDIBits(&bitmap, 0, &src_rect, pRect->left, pRect->top,
678 FXDIB_BLEND_NORMAL);
679 return true;
680 }
681
DrawCosmeticLine(FX_FLOAT x1,FX_FLOAT y1,FX_FLOAT x2,FX_FLOAT y2,uint32_t color,int fill_mode,int blend_type)682 bool CFX_RenderDevice::DrawCosmeticLine(FX_FLOAT x1,
683 FX_FLOAT y1,
684 FX_FLOAT x2,
685 FX_FLOAT y2,
686 uint32_t color,
687 int fill_mode,
688 int blend_type) {
689 if ((color >= 0xff000000) &&
690 m_pDeviceDriver->DrawCosmeticLine(x1, y1, x2, y2, color, blend_type)) {
691 return true;
692 }
693 CFX_GraphStateData graph_state;
694 CFX_PathData path;
695 path.AppendPoint(CFX_PointF(x1, y1), FXPT_TYPE::MoveTo, false);
696 path.AppendPoint(CFX_PointF(x2, y2), FXPT_TYPE::LineTo, false);
697 return m_pDeviceDriver->DrawPath(&path, nullptr, &graph_state, 0, color,
698 fill_mode, blend_type);
699 }
700
GetDIBits(CFX_DIBitmap * pBitmap,int left,int top)701 bool CFX_RenderDevice::GetDIBits(CFX_DIBitmap* pBitmap, int left, int top) {
702 if (!(m_RenderCaps & FXRC_GET_BITS))
703 return false;
704 return m_pDeviceDriver->GetDIBits(pBitmap, left, top);
705 }
706
GetBackDrop()707 CFX_DIBitmap* CFX_RenderDevice::GetBackDrop() {
708 return m_pDeviceDriver->GetBackDrop();
709 }
710
SetDIBitsWithBlend(const CFX_DIBSource * pBitmap,int left,int top,int blend_mode)711 bool CFX_RenderDevice::SetDIBitsWithBlend(const CFX_DIBSource* pBitmap,
712 int left,
713 int top,
714 int blend_mode) {
715 ASSERT(!pBitmap->IsAlphaMask());
716 CFX_Matrix ctm = GetCTM();
717 FX_FLOAT fScaleX = FXSYS_fabs(ctm.a);
718 FX_FLOAT fScaleY = FXSYS_fabs(ctm.d);
719 FX_RECT dest_rect(left, top,
720 FXSYS_round(left + pBitmap->GetWidth() / fScaleX),
721 FXSYS_round(top + pBitmap->GetHeight() / fScaleY));
722 dest_rect.Intersect(m_ClipBox);
723 if (dest_rect.IsEmpty())
724 return true;
725 FX_RECT src_rect(dest_rect.left - left, dest_rect.top - top,
726 dest_rect.left - left + dest_rect.Width(),
727 dest_rect.top - top + dest_rect.Height());
728 src_rect.left = FXSYS_round(src_rect.left * fScaleX);
729 src_rect.top = FXSYS_round(src_rect.top * fScaleY);
730 src_rect.right = FXSYS_round(src_rect.right * fScaleX);
731 src_rect.bottom = FXSYS_round(src_rect.bottom * fScaleY);
732 if ((blend_mode != FXDIB_BLEND_NORMAL && !(m_RenderCaps & FXRC_BLEND_MODE)) ||
733 (pBitmap->HasAlpha() && !(m_RenderCaps & FXRC_ALPHA_IMAGE))) {
734 if (!(m_RenderCaps & FXRC_GET_BITS))
735 return false;
736 int bg_pixel_width = FXSYS_round(dest_rect.Width() * fScaleX);
737 int bg_pixel_height = FXSYS_round(dest_rect.Height() * fScaleY);
738 CFX_DIBitmap background;
739 if (!background.Create(
740 bg_pixel_width, bg_pixel_height,
741 (m_RenderCaps & FXRC_CMYK_OUTPUT) ? FXDIB_Cmyk : FXDIB_Rgb32)) {
742 return false;
743 }
744 if (!m_pDeviceDriver->GetDIBits(&background, dest_rect.left,
745 dest_rect.top)) {
746 return false;
747 }
748 if (!background.CompositeBitmap(0, 0, bg_pixel_width, bg_pixel_height,
749 pBitmap, src_rect.left, src_rect.top,
750 blend_mode, nullptr, false, nullptr)) {
751 return false;
752 }
753 FX_RECT rect(0, 0, bg_pixel_width, bg_pixel_height);
754 return m_pDeviceDriver->SetDIBits(&background, 0, &rect, dest_rect.left,
755 dest_rect.top, FXDIB_BLEND_NORMAL);
756 }
757 return m_pDeviceDriver->SetDIBits(pBitmap, 0, &src_rect, dest_rect.left,
758 dest_rect.top, blend_mode);
759 }
760
StretchDIBitsWithFlagsAndBlend(const CFX_DIBSource * pBitmap,int left,int top,int dest_width,int dest_height,uint32_t flags,int blend_mode)761 bool CFX_RenderDevice::StretchDIBitsWithFlagsAndBlend(
762 const CFX_DIBSource* pBitmap,
763 int left,
764 int top,
765 int dest_width,
766 int dest_height,
767 uint32_t flags,
768 int blend_mode) {
769 FX_RECT dest_rect(left, top, left + dest_width, top + dest_height);
770 FX_RECT clip_box = m_ClipBox;
771 clip_box.Intersect(dest_rect);
772 if (clip_box.IsEmpty())
773 return true;
774 return m_pDeviceDriver->StretchDIBits(pBitmap, 0, left, top, dest_width,
775 dest_height, &clip_box, flags,
776 blend_mode);
777 }
778
SetBitMask(const CFX_DIBSource * pBitmap,int left,int top,uint32_t argb)779 bool CFX_RenderDevice::SetBitMask(const CFX_DIBSource* pBitmap,
780 int left,
781 int top,
782 uint32_t argb) {
783 FX_RECT src_rect(0, 0, pBitmap->GetWidth(), pBitmap->GetHeight());
784 return m_pDeviceDriver->SetDIBits(pBitmap, argb, &src_rect, left, top,
785 FXDIB_BLEND_NORMAL);
786 }
787
StretchBitMask(const CFX_DIBSource * pBitmap,int left,int top,int dest_width,int dest_height,uint32_t color)788 bool CFX_RenderDevice::StretchBitMask(const CFX_DIBSource* pBitmap,
789 int left,
790 int top,
791 int dest_width,
792 int dest_height,
793 uint32_t color) {
794 return StretchBitMaskWithFlags(pBitmap, left, top, dest_width, dest_height,
795 color, 0);
796 }
797
StretchBitMaskWithFlags(const CFX_DIBSource * pBitmap,int left,int top,int dest_width,int dest_height,uint32_t argb,uint32_t flags)798 bool CFX_RenderDevice::StretchBitMaskWithFlags(const CFX_DIBSource* pBitmap,
799 int left,
800 int top,
801 int dest_width,
802 int dest_height,
803 uint32_t argb,
804 uint32_t flags) {
805 FX_RECT dest_rect(left, top, left + dest_width, top + dest_height);
806 FX_RECT clip_box = m_ClipBox;
807 clip_box.Intersect(dest_rect);
808 return m_pDeviceDriver->StretchDIBits(pBitmap, argb, left, top, dest_width,
809 dest_height, &clip_box, flags,
810 FXDIB_BLEND_NORMAL);
811 }
812
StartDIBitsWithBlend(const CFX_DIBSource * pBitmap,int bitmap_alpha,uint32_t argb,const CFX_Matrix * pMatrix,uint32_t flags,void * & handle,int blend_mode)813 bool CFX_RenderDevice::StartDIBitsWithBlend(const CFX_DIBSource* pBitmap,
814 int bitmap_alpha,
815 uint32_t argb,
816 const CFX_Matrix* pMatrix,
817 uint32_t flags,
818 void*& handle,
819 int blend_mode) {
820 return m_pDeviceDriver->StartDIBits(pBitmap, bitmap_alpha, argb, pMatrix,
821 flags, handle, blend_mode);
822 }
823
ContinueDIBits(void * handle,IFX_Pause * pPause)824 bool CFX_RenderDevice::ContinueDIBits(void* handle, IFX_Pause* pPause) {
825 return m_pDeviceDriver->ContinueDIBits(handle, pPause);
826 }
827
CancelDIBits(void * handle)828 void CFX_RenderDevice::CancelDIBits(void* handle) {
829 m_pDeviceDriver->CancelDIBits(handle);
830 }
831
832 #ifdef _SKIA_SUPPORT_
DebugVerifyBitmapIsPreMultiplied() const833 void CFX_RenderDevice::DebugVerifyBitmapIsPreMultiplied() const {
834 SkASSERT(0);
835 }
836
SetBitsWithMask(const CFX_DIBSource * pBitmap,const CFX_DIBSource * pMask,int left,int top,int bitmap_alpha,int blend_type)837 bool CFX_RenderDevice::SetBitsWithMask(const CFX_DIBSource* pBitmap,
838 const CFX_DIBSource* pMask,
839 int left,
840 int top,
841 int bitmap_alpha,
842 int blend_type) {
843 return m_pDeviceDriver->SetBitsWithMask(pBitmap, pMask, left, top,
844 bitmap_alpha, blend_type);
845 }
846 #endif
847
DrawNormalText(int nChars,const FXTEXT_CHARPOS * pCharPos,CFX_Font * pFont,FX_FLOAT font_size,const CFX_Matrix * pText2Device,uint32_t fill_color,uint32_t text_flags)848 bool CFX_RenderDevice::DrawNormalText(int nChars,
849 const FXTEXT_CHARPOS* pCharPos,
850 CFX_Font* pFont,
851 FX_FLOAT font_size,
852 const CFX_Matrix* pText2Device,
853 uint32_t fill_color,
854 uint32_t text_flags) {
855 int nativetext_flags = text_flags;
856 if (m_DeviceClass != FXDC_DISPLAY) {
857 if (!(text_flags & FXTEXT_PRINTGRAPHICTEXT)) {
858 if (ShouldDrawDeviceText(pFont, text_flags) &&
859 m_pDeviceDriver->DrawDeviceText(nChars, pCharPos, pFont, pText2Device,
860 font_size, fill_color)) {
861 return true;
862 }
863 }
864 if (FXARGB_A(fill_color) < 255)
865 return false;
866 } else if (!(text_flags & FXTEXT_NO_NATIVETEXT)) {
867 if (ShouldDrawDeviceText(pFont, text_flags) &&
868 m_pDeviceDriver->DrawDeviceText(nChars, pCharPos, pFont, pText2Device,
869 font_size, fill_color)) {
870 return true;
871 }
872 }
873 CFX_Matrix char2device;
874 CFX_Matrix text2Device;
875 if (pText2Device) {
876 char2device = *pText2Device;
877 text2Device = *pText2Device;
878 }
879
880 char2device.Scale(font_size, -font_size);
881 if (FXSYS_fabs(char2device.a) + FXSYS_fabs(char2device.b) > 50 * 1.0f ||
882 ((m_DeviceClass == FXDC_PRINTER) &&
883 !(text_flags & FXTEXT_PRINTIMAGETEXT))) {
884 if (pFont->GetFace()) {
885 int nPathFlags =
886 (text_flags & FXTEXT_NOSMOOTH) == 0 ? 0 : FXFILL_NOPATHSMOOTH;
887 return DrawTextPath(nChars, pCharPos, pFont, font_size, pText2Device,
888 nullptr, nullptr, fill_color, 0, nullptr, nPathFlags);
889 }
890 }
891 int anti_alias = FXFT_RENDER_MODE_MONO;
892 bool bNormal = false;
893 if ((text_flags & FXTEXT_NOSMOOTH) == 0) {
894 if (m_DeviceClass == FXDC_DISPLAY && m_bpp > 1) {
895 if (!CFX_GEModule::Get()->GetFontMgr()->FTLibrarySupportsHinting()) {
896 // Some Freetype implementations (like the one packaged with Fedora) do
897 // not support hinting due to patents 6219025, 6239783, 6307566,
898 // 6225973, 6243070, 6393145, 6421054, 6282327, and 6624828; the latest
899 // one expires 10/7/19. This makes LCD antialiasing very ugly, so we
900 // instead fall back on NORMAL antialiasing.
901 anti_alias = FXFT_RENDER_MODE_NORMAL;
902 } else if ((m_RenderCaps & (FXRC_ALPHA_OUTPUT | FXRC_CMYK_OUTPUT))) {
903 anti_alias = FXFT_RENDER_MODE_LCD;
904 bNormal = true;
905 } else if (m_bpp < 16) {
906 anti_alias = FXFT_RENDER_MODE_NORMAL;
907 } else {
908 anti_alias = FXFT_RENDER_MODE_LCD;
909
910 bool bClearType = false;
911 if (pFont->GetFace())
912 bClearType = !!(text_flags & FXTEXT_CLEARTYPE);
913 bNormal = !bClearType;
914 }
915 }
916 }
917 std::vector<FXTEXT_GLYPHPOS> glyphs(nChars);
918 CFX_Matrix matrixCTM = GetCTM();
919 FX_FLOAT scale_x = FXSYS_fabs(matrixCTM.a);
920 FX_FLOAT scale_y = FXSYS_fabs(matrixCTM.d);
921 CFX_Matrix deviceCtm = char2device;
922 CFX_Matrix m(scale_x, 0, 0, scale_y, 0, 0);
923 deviceCtm.Concat(m);
924 text2Device.Concat(m);
925
926 for (size_t i = 0; i < glyphs.size(); ++i) {
927 FXTEXT_GLYPHPOS& glyph = glyphs[i];
928 const FXTEXT_CHARPOS& charpos = pCharPos[i];
929
930 glyph.m_fOrigin = text2Device.Transform(charpos.m_Origin);
931 if (anti_alias < FXFT_RENDER_MODE_LCD)
932 glyph.m_Origin.x = FXSYS_round(glyph.m_fOrigin.x);
933 else
934 glyph.m_Origin.x = static_cast<int>(FXSYS_floor(glyph.m_fOrigin.x));
935 glyph.m_Origin.y = FXSYS_round(glyph.m_fOrigin.y);
936
937 if (charpos.m_bGlyphAdjust) {
938 CFX_Matrix new_matrix(
939 charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1],
940 charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 0, 0);
941 new_matrix.Concat(deviceCtm);
942 glyph.m_pGlyph = pFont->LoadGlyphBitmap(
943 charpos.m_GlyphIndex, charpos.m_bFontStyle, &new_matrix,
944 charpos.m_FontCharWidth, anti_alias, nativetext_flags);
945 } else {
946 glyph.m_pGlyph = pFont->LoadGlyphBitmap(
947 charpos.m_GlyphIndex, charpos.m_bFontStyle, &deviceCtm,
948 charpos.m_FontCharWidth, anti_alias, nativetext_flags);
949 }
950 }
951 if (anti_alias < FXFT_RENDER_MODE_LCD && glyphs.size() > 1)
952 AdjustGlyphSpace(&glyphs);
953
954 FX_RECT bmp_rect1 = FXGE_GetGlyphsBBox(glyphs, anti_alias);
955 if (scale_x > 1 && scale_y > 1) {
956 bmp_rect1.left--;
957 bmp_rect1.top--;
958 bmp_rect1.right++;
959 bmp_rect1.bottom++;
960 }
961 FX_RECT bmp_rect(FXSYS_round((FX_FLOAT)(bmp_rect1.left) / scale_x),
962 FXSYS_round((FX_FLOAT)(bmp_rect1.top) / scale_y),
963 FXSYS_round((FX_FLOAT)bmp_rect1.right / scale_x),
964 FXSYS_round((FX_FLOAT)bmp_rect1.bottom / scale_y));
965 bmp_rect.Intersect(m_ClipBox);
966 if (bmp_rect.IsEmpty())
967 return true;
968 int pixel_width = FXSYS_round(bmp_rect.Width() * scale_x);
969 int pixel_height = FXSYS_round(bmp_rect.Height() * scale_y);
970 int pixel_left = FXSYS_round(bmp_rect.left * scale_x);
971 int pixel_top = FXSYS_round(bmp_rect.top * scale_y);
972 if (anti_alias == FXFT_RENDER_MODE_MONO) {
973 CFX_DIBitmap bitmap;
974 if (!bitmap.Create(pixel_width, pixel_height, FXDIB_1bppMask))
975 return false;
976 bitmap.Clear(0);
977 for (const FXTEXT_GLYPHPOS& glyph : glyphs) {
978 if (!glyph.m_pGlyph)
979 continue;
980 const CFX_DIBitmap* pGlyph = &glyph.m_pGlyph->m_Bitmap;
981 bitmap.TransferBitmap(
982 glyph.m_Origin.x + glyph.m_pGlyph->m_Left - pixel_left,
983 glyph.m_Origin.y - glyph.m_pGlyph->m_Top - pixel_top,
984 pGlyph->GetWidth(), pGlyph->GetHeight(), pGlyph, 0, 0);
985 }
986 return SetBitMask(&bitmap, bmp_rect.left, bmp_rect.top, fill_color);
987 }
988 CFX_DIBitmap bitmap;
989 if (m_bpp == 8) {
990 if (!bitmap.Create(pixel_width, pixel_height, FXDIB_8bppMask))
991 return false;
992 } else {
993 if (!CreateCompatibleBitmap(&bitmap, pixel_width, pixel_height))
994 return false;
995 }
996 if (!bitmap.HasAlpha() && !bitmap.IsAlphaMask()) {
997 bitmap.Clear(0xFFFFFFFF);
998 if (!GetDIBits(&bitmap, bmp_rect.left, bmp_rect.top))
999 return false;
1000 } else {
1001 bitmap.Clear(0);
1002 if (bitmap.m_pAlphaMask)
1003 bitmap.m_pAlphaMask->Clear(0);
1004 }
1005 int dest_width = pixel_width;
1006 int a = 0;
1007 int r = 0;
1008 int g = 0;
1009 int b = 0;
1010 if (anti_alias == FXFT_RENDER_MODE_LCD)
1011 ArgbDecode(fill_color, a, r, g, b);
1012
1013 for (const FXTEXT_GLYPHPOS& glyph : glyphs) {
1014 if (!glyph.m_pGlyph)
1015 continue;
1016
1017 pdfium::base::CheckedNumeric<int> left = glyph.m_Origin.x;
1018 left += glyph.m_pGlyph->m_Left;
1019 left -= pixel_left;
1020 if (!left.IsValid())
1021 return false;
1022
1023 pdfium::base::CheckedNumeric<int> top = glyph.m_Origin.y;
1024 top -= glyph.m_pGlyph->m_Top;
1025 top -= pixel_top;
1026 if (!top.IsValid())
1027 return false;
1028
1029 const CFX_DIBitmap* pGlyph = &glyph.m_pGlyph->m_Bitmap;
1030 int ncols = pGlyph->GetWidth();
1031 int nrows = pGlyph->GetHeight();
1032 if (anti_alias == FXFT_RENDER_MODE_NORMAL) {
1033 if (!bitmap.CompositeMask(left.ValueOrDie(), top.ValueOrDie(), ncols,
1034 nrows, pGlyph, fill_color, 0, 0,
1035 FXDIB_BLEND_NORMAL, nullptr, false, 0,
1036 nullptr)) {
1037 return false;
1038 }
1039 continue;
1040 }
1041 bool bBGRStripe = !!(text_flags & FXTEXT_BGR_STRIPE);
1042 ncols /= 3;
1043 int x_subpixel = static_cast<int>(glyph.m_fOrigin.x * 3) % 3;
1044 int start_col =
1045 pdfium::base::ValueOrDieForType<int>(pdfium::base::CheckMax(left, 0));
1046 pdfium::base::CheckedNumeric<int> end_col_safe = left;
1047 end_col_safe += ncols;
1048 if (!end_col_safe.IsValid())
1049 return false;
1050
1051 int end_col =
1052 std::min(static_cast<int>(end_col_safe.ValueOrDie<int>()), dest_width);
1053 if (start_col >= end_col)
1054 continue;
1055
1056 DrawNormalTextHelper(&bitmap, pGlyph, nrows, left.ValueOrDie(),
1057 top.ValueOrDie(), start_col, end_col, bNormal,
1058 bBGRStripe, x_subpixel, a, r, g, b);
1059 }
1060 if (bitmap.IsAlphaMask())
1061 SetBitMask(&bitmap, bmp_rect.left, bmp_rect.top, fill_color);
1062 else
1063 SetDIBits(&bitmap, bmp_rect.left, bmp_rect.top);
1064 return true;
1065 }
1066
DrawTextPath(int nChars,const FXTEXT_CHARPOS * pCharPos,CFX_Font * pFont,FX_FLOAT font_size,const CFX_Matrix * pText2User,const CFX_Matrix * pUser2Device,const CFX_GraphStateData * pGraphState,uint32_t fill_color,FX_ARGB stroke_color,CFX_PathData * pClippingPath,int nFlag)1067 bool CFX_RenderDevice::DrawTextPath(int nChars,
1068 const FXTEXT_CHARPOS* pCharPos,
1069 CFX_Font* pFont,
1070 FX_FLOAT font_size,
1071 const CFX_Matrix* pText2User,
1072 const CFX_Matrix* pUser2Device,
1073 const CFX_GraphStateData* pGraphState,
1074 uint32_t fill_color,
1075 FX_ARGB stroke_color,
1076 CFX_PathData* pClippingPath,
1077 int nFlag) {
1078 for (int iChar = 0; iChar < nChars; iChar++) {
1079 const FXTEXT_CHARPOS& charpos = pCharPos[iChar];
1080 CFX_Matrix matrix;
1081 if (charpos.m_bGlyphAdjust) {
1082 matrix = CFX_Matrix(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1],
1083 charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3],
1084 0, 0);
1085 }
1086 matrix.Concat(CFX_Matrix(font_size, 0, 0, font_size, charpos.m_Origin.x,
1087 charpos.m_Origin.y));
1088 const CFX_PathData* pPath =
1089 pFont->LoadGlyphPath(charpos.m_GlyphIndex, charpos.m_FontCharWidth);
1090 if (!pPath)
1091 continue;
1092
1093 matrix.Concat(*pText2User);
1094
1095 CFX_PathData TransformedPath(*pPath);
1096 TransformedPath.Transform(&matrix);
1097 if (fill_color || stroke_color) {
1098 int fill_mode = nFlag;
1099 if (fill_color)
1100 fill_mode |= FXFILL_WINDING;
1101 fill_mode |= FX_FILL_TEXT_MODE;
1102 if (!DrawPathWithBlend(&TransformedPath, pUser2Device, pGraphState,
1103 fill_color, stroke_color, fill_mode,
1104 FXDIB_BLEND_NORMAL)) {
1105 return false;
1106 }
1107 }
1108 if (pClippingPath)
1109 pClippingPath->Append(&TransformedPath, pUser2Device);
1110 }
1111 return true;
1112 }
1113