1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "gm.h"
9 #include "SkCanvas.h"
10 #include "SkPath.h"
11
12 /** Draw a 2px border around the target, then red behind the target;
13 set the clip to match the target, then draw >> the target in blue.
14 */
15
draw(SkCanvas * canvas,SkRect & target,int x,int y)16 static void draw(SkCanvas* canvas, SkRect& target, int x, int y) {
17 SkPaint borderPaint;
18 borderPaint.setColor(SkColorSetRGB(0x0, 0xDD, 0x0));
19 borderPaint.setAntiAlias(true);
20 SkPaint backgroundPaint;
21 backgroundPaint.setColor(SkColorSetRGB(0xDD, 0x0, 0x0));
22 backgroundPaint.setAntiAlias(true);
23 SkPaint foregroundPaint;
24 foregroundPaint.setColor(SkColorSetRGB(0x0, 0x0, 0xDD));
25 foregroundPaint.setAntiAlias(true);
26
27 canvas->save();
28 canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
29 target.inset(SkIntToScalar(-2), SkIntToScalar(-2));
30 canvas->drawRect(target, borderPaint);
31 target.inset(SkIntToScalar(2), SkIntToScalar(2));
32 canvas->drawRect(target, backgroundPaint);
33 canvas->clipRect(target, SkRegion::kIntersect_Op, true);
34 target.inset(SkIntToScalar(-4), SkIntToScalar(-4));
35 canvas->drawRect(target, foregroundPaint);
36 canvas->restore();
37 }
38
draw_square(SkCanvas * canvas,int x,int y)39 static void draw_square(SkCanvas* canvas, int x, int y) {
40 SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 10 * SK_Scalar1));
41 draw(canvas, target, x, y);
42 }
43
draw_column(SkCanvas * canvas,int x,int y)44 static void draw_column(SkCanvas* canvas, int x, int y) {
45 SkRect target (SkRect::MakeWH(1 * SK_Scalar1, 10 * SK_Scalar1));
46 draw(canvas, target, x, y);
47 }
48
draw_bar(SkCanvas * canvas,int x,int y)49 static void draw_bar(SkCanvas* canvas, int x, int y) {
50 SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 1 * SK_Scalar1));
51 draw(canvas, target, x, y);
52 }
53
draw_rect_tests(SkCanvas * canvas)54 static void draw_rect_tests(SkCanvas* canvas) {
55 draw_square(canvas, 10, 10);
56 draw_column(canvas, 30, 10);
57 draw_bar(canvas, 10, 30);
58 }
59
60 /**
61 Test a set of clipping problems discovered while writing blitAntiRect,
62 and test all the code paths through the clipping blitters.
63 Each region should show as a blue center surrounded by a 2px green
64 border, with no red.
65 */
66
67 class AAClipGM : public skiagm::GM {
68 public:
AAClipGM()69 AAClipGM() {
70
71 }
72
73 protected:
onShortName()74 SkString onShortName() override {
75 return SkString("aaclip");
76 }
77
onISize()78 SkISize onISize() override {
79 return SkISize::Make(240, 120);
80 }
81
onDraw(SkCanvas * canvas)82 void onDraw(SkCanvas* canvas) override {
83 // Initial pixel-boundary-aligned draw
84 draw_rect_tests(canvas);
85
86 // Repeat 4x with .2, .4, .6, .8 px offsets
87 canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
88 canvas->translate(SkIntToScalar(50), 0);
89 draw_rect_tests(canvas);
90
91 canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
92 canvas->translate(SkIntToScalar(50), 0);
93 draw_rect_tests(canvas);
94
95 canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
96 canvas->translate(SkIntToScalar(50), 0);
97 draw_rect_tests(canvas);
98
99 canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
100 canvas->translate(SkIntToScalar(50), 0);
101 draw_rect_tests(canvas);
102 }
103
104 private:
105 typedef skiagm::GM INHERITED;
106 };
107
DEF_GM(return new AAClipGM;)108 DEF_GM(return new AAClipGM;)
109
110 /////////////////////////////////////////////////////////////////////////
111
112 #ifdef SK_BUILD_FOR_MAC
113
114 static SkCanvas* make_canvas(const SkBitmap& bm) {
115 const SkImageInfo& info = bm.info();
116 if (info.bytesPerPixel() == 4) {
117 return SkCanvas::NewRasterDirectN32(info.width(), info.height(),
118 (SkPMColor*)bm.getPixels(),
119 bm.rowBytes());
120 } else {
121 return new SkCanvas(bm);
122 }
123 }
124
125 #include "SkCGUtils.h"
test_image(SkCanvas * canvas,const SkImageInfo & info)126 static void test_image(SkCanvas* canvas, const SkImageInfo& info) {
127 SkBitmap bm;
128 bm.allocPixels(info);
129
130 SkAutoTUnref<SkCanvas> newc(make_canvas(bm));
131 if (info.isOpaque()) {
132 bm.eraseColor(SK_ColorGREEN);
133 } else {
134 bm.eraseColor(0);
135 }
136
137 SkPaint paint;
138 paint.setAntiAlias(true);
139 paint.setColor(SK_ColorBLUE);
140 newc->drawCircle(50, 50, 49, paint);
141 canvas->drawBitmap(bm, 10, 10);
142
143 CGImageRef image = SkCreateCGImageRefWithColorspace(bm, nullptr);
144
145 SkBitmap bm2;
146 SkCreateBitmapFromCGImage(&bm2, image);
147 CGImageRelease(image);
148
149 canvas->drawBitmap(bm2, 10, 120);
150 }
151
152 class CGImageGM : public skiagm::GM {
153 public:
CGImageGM()154 CGImageGM() {}
155
156 protected:
onShortName()157 SkString onShortName() override {
158 return SkString("cgimage");
159 }
160
onISize()161 SkISize onISize() override {
162 return SkISize::Make(800, 250);
163 }
164
onDraw(SkCanvas * canvas)165 void onDraw(SkCanvas* canvas) override {
166 const struct {
167 SkColorType fCT;
168 SkAlphaType fAT;
169 } rec[] = {
170 { kRGB_565_SkColorType, kOpaque_SkAlphaType },
171
172 { kRGBA_8888_SkColorType, kPremul_SkAlphaType },
173 { kRGBA_8888_SkColorType, kUnpremul_SkAlphaType },
174 { kRGBA_8888_SkColorType, kOpaque_SkAlphaType },
175
176 { kBGRA_8888_SkColorType, kPremul_SkAlphaType },
177 { kBGRA_8888_SkColorType, kUnpremul_SkAlphaType },
178 { kBGRA_8888_SkColorType, kOpaque_SkAlphaType },
179 };
180
181 for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) {
182 SkImageInfo info = SkImageInfo::Make(100, 100, rec[i].fCT, rec[i].fAT);
183 test_image(canvas, info);
184 canvas->translate(info.width() + 10, 0);
185 }
186 }
187
188 private:
189 typedef skiagm::GM INHERITED;
190 };
191
192 #if 0 // Disabled pending fix from reed@
193 DEF_GM( return new CGImageGM; )
194 #endif
195 #endif
196
197 ///////////////////////////////////////////////////////////////////////////////////////////////////
198
199 // https://bug.skia.org/3716
200 class ClipCubicGM : public skiagm::GM {
201 const SkScalar W = 100;
202 const SkScalar H = 240;
203
204 SkPath fVPath, fHPath;
205 public:
ClipCubicGM()206 ClipCubicGM() {
207 fVPath.moveTo(W, 0);
208 fVPath.cubicTo(W, H-10, 0, 10, 0, H);
209
210 SkMatrix pivot;
211 pivot.setRotate(90, W/2, H/2);
212 fVPath.transform(pivot, &fHPath);
213 }
214
215 protected:
onShortName()216 SkString onShortName() override {
217 return SkString("clipcubic");
218 }
219
onISize()220 SkISize onISize() override {
221 return SkISize::Make(400, 410);
222 }
223
doDraw(SkCanvas * canvas,const SkPath & path)224 void doDraw(SkCanvas* canvas, const SkPath& path) {
225 SkPaint paint;
226 paint.setAntiAlias(true);
227
228 paint.setColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
229 canvas->drawPath(path, paint);
230
231 paint.setColor(SK_ColorRED);
232 paint.setStyle(SkPaint::kStroke_Style);
233 canvas->drawPath(path, paint);
234 }
235
drawAndClip(SkCanvas * canvas,const SkPath & path,SkScalar dx,SkScalar dy)236 void drawAndClip(SkCanvas* canvas, const SkPath& path, SkScalar dx, SkScalar dy) {
237 SkAutoCanvasRestore acr(canvas, true);
238
239 SkRect r = SkRect::MakeXYWH(0, H/4, W, H/2);
240 SkPaint paint;
241 paint.setColor(sk_tool_utils::color_to_565(0xFF8888FF));
242
243 canvas->drawRect(r, paint);
244 this->doDraw(canvas, path);
245
246 canvas->translate(dx, dy);
247
248 canvas->drawRect(r, paint);
249 canvas->clipRect(r);
250 this->doDraw(canvas, path);
251 }
252
onDraw(SkCanvas * canvas)253 void onDraw(SkCanvas* canvas) override {
254 canvas->translate(80, 10);
255 this->drawAndClip(canvas, fVPath, 200, 0);
256 canvas->translate(0, 200);
257 this->drawAndClip(canvas, fHPath, 200, 0);
258 }
259
260 private:
261 typedef skiagm::GM INHERITED;
262 };
263 DEF_GM(return new ClipCubicGM;)
264