1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "gm.h"
9 #include "SkCanvas.h"
10 #include "SkGradientShader.h"
11 #include "SkGraphics.h"
12 #include "SkPath.h"
13 #include "SkRegion.h"
14 #include "SkShader.h"
15
make_bitmap(SkBitmap * bitmap)16 static void make_bitmap(SkBitmap* bitmap) {
17 bitmap->setConfig(SkBitmap::kARGB_8888_Config, 64, 64);
18 bitmap->allocPixels();
19
20 SkCanvas canvas(*bitmap);
21
22 canvas.drawColor(SK_ColorRED);
23 SkPaint paint;
24 paint.setAntiAlias(true);
25 const SkPoint pts[] = { { 0, 0 }, { 64, 64 } };
26 const SkColor colors[] = { SK_ColorWHITE, SK_ColorBLUE };
27 paint.setShader(SkGradientShader::CreateLinear(pts, colors, NULL, 2,
28 SkShader::kClamp_TileMode))->unref();
29 canvas.drawCircle(32, 32, 32, paint);
30 }
31
32 class DrawBitmapRect2 : public skiagm::GM {
33 bool fUseIRect;
34 public:
DrawBitmapRect2(bool useIRect)35 DrawBitmapRect2(bool useIRect) : fUseIRect(useIRect) {
36 }
37
38 protected:
onShortName()39 virtual SkString onShortName() SK_OVERRIDE {
40 SkString str;
41 str.printf("bitmaprect_%s", fUseIRect ? "i" : "s");
42 return str;
43 }
44
onISize()45 virtual SkISize onISize() SK_OVERRIDE {
46 return SkISize::Make(640, 480);
47 }
48
onDraw(SkCanvas * canvas)49 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
50 canvas->drawColor(0xFFCCCCCC);
51
52 const SkIRect src[] = {
53 { 0, 0, 32, 32 },
54 { 0, 0, 80, 80 },
55 { 32, 32, 96, 96 },
56 { -32, -32, 32, 32, }
57 };
58
59 SkPaint paint;
60 paint.setStyle(SkPaint::kStroke_Style);
61
62 SkBitmap bitmap;
63 make_bitmap(&bitmap);
64
65 SkRect dstR = { 0, 200, 128, 380 };
66
67 canvas->translate(16, 40);
68 for (size_t i = 0; i < SK_ARRAY_COUNT(src); i++) {
69 SkRect srcR;
70 srcR.set(src[i]);
71
72 canvas->drawBitmap(bitmap, 0, 0, &paint);
73 if (!fUseIRect) {
74 canvas->drawBitmapRectToRect(bitmap, &srcR, dstR, &paint);
75 } else {
76 canvas->drawBitmapRect(bitmap, &src[i], dstR, &paint);
77 }
78
79 canvas->drawRect(dstR, paint);
80 canvas->drawRect(srcR, paint);
81
82 canvas->translate(160, 0);
83 }
84 }
85
86 private:
87 typedef skiagm::GM INHERITED;
88 };
89
90 //////////////////////////////////////////////////////////////////////////////
make_3x3_bitmap(SkBitmap * bitmap)91 static void make_3x3_bitmap(SkBitmap* bitmap) {
92
93 static const int gXSize = 3;
94 static const int gYSize = 3;
95
96 SkColor textureData[gXSize][gYSize] = {
97 { SK_ColorRED, SK_ColorWHITE, SK_ColorBLUE },
98 { SK_ColorGREEN, SK_ColorBLACK, SK_ColorCYAN },
99 { SK_ColorYELLOW, SK_ColorGRAY, SK_ColorMAGENTA }
100 };
101
102
103 bitmap->setConfig(SkBitmap::kARGB_8888_Config, gXSize, gYSize);
104 bitmap->allocPixels();
105
106 SkAutoLockPixels lock(*bitmap);
107 for (int y = 0; y < gYSize; y++) {
108 for (int x = 0; x < gXSize; x++) {
109 *bitmap->getAddr32(x, y) = textureData[x][y];
110 }
111 }
112 }
113
114 // This GM attempts to make visible any issues drawBitmapRectToRect may have
115 // with partial source rects. In this case the eight pixels on the border
116 // should be half the width/height of the central pixel, i.e.:
117 // __|____|__
118 // | |
119 // __|____|__
120 // | |
121 class DrawBitmapRect3 : public skiagm::GM {
122 public:
DrawBitmapRect3()123 DrawBitmapRect3() {
124 this->setBGColor(SK_ColorBLACK);
125 }
126
127 protected:
onShortName()128 virtual SkString onShortName() SK_OVERRIDE {
129 SkString str;
130 str.printf("3x3bitmaprect");
131 return str;
132 }
133
onISize()134 virtual SkISize onISize() SK_OVERRIDE {
135 return SkISize::Make(640, 480);
136 }
137
onDraw(SkCanvas * canvas)138 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
139
140 SkBitmap bitmap;
141 make_3x3_bitmap(&bitmap);
142
143 SkRect srcR = { 0.5f, 0.5f, 2.5f, 2.5f };
144 SkRect dstR = { 100, 100, 300, 200 };
145
146 canvas->drawBitmapRectToRect(bitmap, &srcR, dstR, NULL);
147 }
148
149 private:
150 typedef skiagm::GM INHERITED;
151 };
152
153 //////////////////////////////////////////////////////////////////////////////
make_big_bitmap(SkBitmap * bitmap)154 static void make_big_bitmap(SkBitmap* bitmap) {
155
156 static const int gXSize = 4096;
157 static const int gYSize = 4096;
158 static const int gBorderWidth = 10;
159
160 bitmap->setConfig(SkBitmap::kARGB_8888_Config, gXSize, gYSize);
161 bitmap->allocPixels();
162
163 SkAutoLockPixels lock(*bitmap);
164 for (int y = 0; y < gYSize; ++y) {
165 for (int x = 0; x < gXSize; ++x) {
166 if (x <= gBorderWidth || x >= gXSize-gBorderWidth ||
167 y <= gBorderWidth || y >= gYSize-gBorderWidth) {
168 *bitmap->getAddr32(x, y) = 0x88FFFFFF;
169 } else {
170 *bitmap->getAddr32(x, y) = 0x88FF0000;
171 }
172 }
173 }
174 }
175
176 // This GM attempts to reveal any issues we may have when the GPU has to
177 // break up a large texture in order to draw it. The XOR transfer mode will
178 // create stripes in the image if there is imprecision in the destination
179 // tile placement.
180 class DrawBitmapRect4 : public skiagm::GM {
181 bool fUseIRect;
182 public:
DrawBitmapRect4(bool useIRect)183 DrawBitmapRect4(bool useIRect) : fUseIRect(useIRect) {
184 this->setBGColor(0x88444444);
185 }
186
187 protected:
onShortName()188 virtual SkString onShortName() SK_OVERRIDE {
189 SkString str;
190 str.printf("bigbitmaprect_%s", fUseIRect ? "i" : "s");
191 return str;
192 }
193
onISize()194 virtual SkISize onISize() SK_OVERRIDE {
195 return SkISize::Make(640, 480);
196 }
197
onDraw(SkCanvas * canvas)198 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
199
200 SkXfermode* mode = SkXfermode::Create(SkXfermode::kXor_Mode);
201
202 SkPaint paint;
203 paint.setAlpha(128);
204 paint.setXfermode(mode)->unref();
205
206 SkBitmap bitmap;
207 make_big_bitmap(&bitmap);
208
209 SkRect srcR1 = { 0.0f, 0.0f, 4096.0f, 2040.0f };
210 SkRect dstR1 = { 10.1f, 10.1f, 629.9f, 400.9f };
211
212 SkRect srcR2 = { 4085.0f, 10.0f, 4087.0f, 12.0f };
213 SkRect dstR2 = { 10, 410, 30, 430 };
214
215 if (!fUseIRect) {
216 canvas->drawBitmapRectToRect(bitmap, &srcR1, dstR1, &paint);
217 canvas->drawBitmapRectToRect(bitmap, &srcR2, dstR2, &paint);
218 } else {
219 SkIRect iSrcR1, iSrcR2;
220
221 srcR1.roundOut(&iSrcR1);
222 srcR2.roundOut(&iSrcR2);
223
224 canvas->drawBitmapRect(bitmap, &iSrcR1, dstR1, &paint);
225 canvas->drawBitmapRect(bitmap, &iSrcR2, dstR2, &paint);
226 }
227 }
228
229 private:
230 typedef skiagm::GM INHERITED;
231 };
232
233 //////////////////////////////////////////////////////////////////////////////
234
MyFactory0(void *)235 static skiagm::GM* MyFactory0(void*) { return new DrawBitmapRect2(false); }
MyFactory1(void *)236 static skiagm::GM* MyFactory1(void*) { return new DrawBitmapRect2(true); }
237
MyFactory2(void *)238 static skiagm::GM* MyFactory2(void*) { return new DrawBitmapRect3(); }
239
240 #ifndef SK_BUILD_FOR_ANDROID
MyFactory3(void *)241 static skiagm::GM* MyFactory3(void*) { return new DrawBitmapRect4(false); }
MyFactory4(void *)242 static skiagm::GM* MyFactory4(void*) { return new DrawBitmapRect4(true); }
243 #endif
244
245 static skiagm::GMRegistry reg0(MyFactory0);
246 static skiagm::GMRegistry reg1(MyFactory1);
247
248 static skiagm::GMRegistry reg2(MyFactory2);
249
250 #ifndef SK_BUILD_FOR_ANDROID
251 static skiagm::GMRegistry reg3(MyFactory3);
252 static skiagm::GMRegistry reg4(MyFactory4);
253 #endif
254