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->allocN32Pixels(64, 64);
18
19 SkCanvas canvas(*bitmap);
20
21 canvas.drawColor(SK_ColorRED);
22 SkPaint paint;
23 paint.setAntiAlias(true);
24 const SkPoint pts[] = { { 0, 0 }, { 64, 64 } };
25 const SkColor colors[] = { SK_ColorWHITE, SK_ColorBLUE };
26 paint.setShader(SkGradientShader::CreateLinear(pts, colors, NULL, 2,
27 SkShader::kClamp_TileMode))->unref();
28 canvas.drawCircle(32, 32, 32, paint);
29 }
30
31 class DrawBitmapRect2 : public skiagm::GM {
32 bool fUseIRect;
33 public:
DrawBitmapRect2(bool useIRect)34 DrawBitmapRect2(bool useIRect) : fUseIRect(useIRect) {
35 }
36
37 protected:
onShortName()38 virtual SkString onShortName() SK_OVERRIDE {
39 SkString str;
40 str.printf("bitmaprect_%s", fUseIRect ? "i" : "s");
41 return str;
42 }
43
onISize()44 virtual SkISize onISize() SK_OVERRIDE {
45 return SkISize::Make(640, 480);
46 }
47
onDraw(SkCanvas * canvas)48 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
49 canvas->drawColor(0xFFCCCCCC);
50
51 const SkIRect src[] = {
52 { 0, 0, 32, 32 },
53 { 0, 0, 80, 80 },
54 { 32, 32, 96, 96 },
55 { -32, -32, 32, 32, }
56 };
57
58 SkPaint paint;
59 paint.setStyle(SkPaint::kStroke_Style);
60
61 SkBitmap bitmap;
62 make_bitmap(&bitmap);
63
64 SkRect dstR = { 0, 200, 128, 380 };
65
66 canvas->translate(16, 40);
67 for (size_t i = 0; i < SK_ARRAY_COUNT(src); i++) {
68 SkRect srcR;
69 srcR.set(src[i]);
70
71 canvas->drawBitmap(bitmap, 0, 0, &paint);
72 if (!fUseIRect) {
73 canvas->drawBitmapRectToRect(bitmap, &srcR, dstR, &paint);
74 } else {
75 canvas->drawBitmapRect(bitmap, &src[i], dstR, &paint);
76 }
77
78 canvas->drawRect(dstR, paint);
79 canvas->drawRect(srcR, paint);
80
81 canvas->translate(160, 0);
82 }
83 }
84
85 private:
86 typedef skiagm::GM INHERITED;
87 };
88
89 //////////////////////////////////////////////////////////////////////////////
make_3x3_bitmap(SkBitmap * bitmap)90 static void make_3x3_bitmap(SkBitmap* bitmap) {
91
92 static const int gXSize = 3;
93 static const int gYSize = 3;
94
95 SkColor textureData[gXSize][gYSize] = {
96 { SK_ColorRED, SK_ColorWHITE, SK_ColorBLUE },
97 { SK_ColorGREEN, SK_ColorBLACK, SK_ColorCYAN },
98 { SK_ColorYELLOW, SK_ColorGRAY, SK_ColorMAGENTA }
99 };
100
101
102 bitmap->allocN32Pixels(gXSize, gYSize);
103 for (int y = 0; y < gYSize; y++) {
104 for (int x = 0; x < gXSize; x++) {
105 *bitmap->getAddr32(x, y) = textureData[x][y];
106 }
107 }
108 }
109
110 // This GM attempts to make visible any issues drawBitmapRectToRect may have
111 // with partial source rects. In this case the eight pixels on the border
112 // should be half the width/height of the central pixel, i.e.:
113 // __|____|__
114 // | |
115 // __|____|__
116 // | |
117 class DrawBitmapRect3 : public skiagm::GM {
118 public:
DrawBitmapRect3()119 DrawBitmapRect3() {
120 this->setBGColor(SK_ColorBLACK);
121 }
122
123 protected:
onShortName()124 virtual SkString onShortName() SK_OVERRIDE {
125 SkString str;
126 str.printf("3x3bitmaprect");
127 return str;
128 }
129
onISize()130 virtual SkISize onISize() SK_OVERRIDE {
131 return SkISize::Make(640, 480);
132 }
133
onDraw(SkCanvas * canvas)134 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
135
136 SkBitmap bitmap;
137 make_3x3_bitmap(&bitmap);
138
139 SkRect srcR = { 0.5f, 0.5f, 2.5f, 2.5f };
140 SkRect dstR = { 100, 100, 300, 200 };
141
142 canvas->drawBitmapRectToRect(bitmap, &srcR, dstR, NULL);
143 }
144
145 private:
146 typedef skiagm::GM INHERITED;
147 };
148
149 //////////////////////////////////////////////////////////////////////////////
make_big_bitmap(SkBitmap * bitmap)150 static void make_big_bitmap(SkBitmap* bitmap) {
151
152 static const int gXSize = 4096;
153 static const int gYSize = 4096;
154 static const int gBorderWidth = 10;
155
156 bitmap->allocN32Pixels(gXSize, gYSize);
157 for (int y = 0; y < gYSize; ++y) {
158 for (int x = 0; x < gXSize; ++x) {
159 if (x <= gBorderWidth || x >= gXSize-gBorderWidth ||
160 y <= gBorderWidth || y >= gYSize-gBorderWidth) {
161 *bitmap->getAddr32(x, y) = 0x88FFFFFF;
162 } else {
163 *bitmap->getAddr32(x, y) = 0x88FF0000;
164 }
165 }
166 }
167 }
168
169 // This GM attempts to reveal any issues we may have when the GPU has to
170 // break up a large texture in order to draw it. The XOR transfer mode will
171 // create stripes in the image if there is imprecision in the destination
172 // tile placement.
173 class DrawBitmapRect4 : public skiagm::GM {
174 bool fUseIRect;
175 SkBitmap fBigBitmap;
176
177 public:
DrawBitmapRect4(bool useIRect)178 DrawBitmapRect4(bool useIRect) : fUseIRect(useIRect) {
179 this->setBGColor(0x88444444);
180 }
181
182 protected:
onShortName()183 virtual SkString onShortName() SK_OVERRIDE {
184 SkString str;
185 str.printf("bigbitmaprect_%s", fUseIRect ? "i" : "s");
186 return str;
187 }
188
onISize()189 virtual SkISize onISize() SK_OVERRIDE {
190 return SkISize::Make(640, 480);
191 }
192
onOnceBeforeDraw()193 virtual void onOnceBeforeDraw() SK_OVERRIDE {
194 make_big_bitmap(&fBigBitmap);
195 }
196
onDraw(SkCanvas * canvas)197 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
198
199 SkXfermode* mode = SkXfermode::Create(SkXfermode::kXor_Mode);
200
201 SkPaint paint;
202 paint.setAlpha(128);
203 paint.setXfermode(mode)->unref();
204
205 SkRect srcR1 = { 0.0f, 0.0f, 4096.0f, 2040.0f };
206 SkRect dstR1 = { 10.1f, 10.1f, 629.9f, 400.9f };
207
208 SkRect srcR2 = { 4085.0f, 10.0f, 4087.0f, 12.0f };
209 SkRect dstR2 = { 10, 410, 30, 430 };
210
211 if (!fUseIRect) {
212 canvas->drawBitmapRectToRect(fBigBitmap, &srcR1, dstR1, &paint);
213 canvas->drawBitmapRectToRect(fBigBitmap, &srcR2, dstR2, &paint);
214 } else {
215 SkIRect iSrcR1, iSrcR2;
216
217 srcR1.roundOut(&iSrcR1);
218 srcR2.roundOut(&iSrcR2);
219
220 canvas->drawBitmapRect(fBigBitmap, &iSrcR1, dstR1, &paint);
221 canvas->drawBitmapRect(fBigBitmap, &iSrcR2, dstR2, &paint);
222 }
223 }
224
225 private:
226 typedef skiagm::GM INHERITED;
227 };
228
229 //////////////////////////////////////////////////////////////////////////////
230
MyFactory0(void *)231 static skiagm::GM* MyFactory0(void*) { return new DrawBitmapRect2(false); }
MyFactory1(void *)232 static skiagm::GM* MyFactory1(void*) { return new DrawBitmapRect2(true); }
233
MyFactory2(void *)234 static skiagm::GM* MyFactory2(void*) { return new DrawBitmapRect3(); }
235
236 #ifndef SK_BUILD_FOR_ANDROID
MyFactory3(void *)237 static skiagm::GM* MyFactory3(void*) { return new DrawBitmapRect4(false); }
MyFactory4(void *)238 static skiagm::GM* MyFactory4(void*) { return new DrawBitmapRect4(true); }
239 #endif
240
241 static skiagm::GMRegistry reg0(MyFactory0);
242 static skiagm::GMRegistry reg1(MyFactory1);
243
244 static skiagm::GMRegistry reg2(MyFactory2);
245
246 #ifndef SK_BUILD_FOR_ANDROID
247 static skiagm::GMRegistry reg3(MyFactory3);
248 static skiagm::GMRegistry reg4(MyFactory4);
249 #endif
250