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reed@google.com5dd85a42012-11-15 13:46:47 +00001/*
2 * Copyright 2012 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"
reed@google.coma4f81372012-11-15 15:56:38 +000010#include "SkGradientShader.h"
bungemand3ebb482015-08-05 13:57:49 -070011#include "SkPath.h"
reed@google.com86eca472012-11-15 17:24:23 +000012#include "SkSurface.h"
reed@google.com5dd85a42012-11-15 13:46:47 +000013
reed@google.coma4f81372012-11-15 15:56:38 +000014#define W SkIntToScalar(80)
reed@google.com5dd85a42012-11-15 13:46:47 +000015#define H SkIntToScalar(60)
16
reed@google.coma4f81372012-11-15 15:56:38 +000017typedef void (*PaintProc)(SkPaint*);
18
mike@reedtribe.org92aa7562012-11-16 02:23:10 +000019static void identity_paintproc(SkPaint* paint) {
halcanary96fcdcc2015-08-27 07:41:13 -070020 paint->setShader(nullptr);
mike@reedtribe.org92aa7562012-11-16 02:23:10 +000021}
22
reed@google.coma4f81372012-11-15 15:56:38 +000023static void gradient_paintproc(SkPaint* paint) {
24 const SkColor colors[] = { SK_ColorGREEN, SK_ColorBLUE };
25 const SkPoint pts[] = { { 0, 0 }, { W, H } };
reed1a9b9642016-03-13 14:13:58 -070026 paint->setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
27 SkShader::kClamp_TileMode));
reed@google.coma4f81372012-11-15 15:56:38 +000028}
29
reed@google.com5dd85a42012-11-15 13:46:47 +000030typedef void (*Proc)(SkCanvas*, const SkPaint&);
31
32static void draw_hair(SkCanvas* canvas, const SkPaint& paint) {
33 SkPaint p(paint);
34 p.setStrokeWidth(0);
35 canvas->drawLine(0, 0, W, H, p);
36}
37
38static void draw_thick(SkCanvas* canvas, const SkPaint& paint) {
39 SkPaint p(paint);
40 p.setStrokeWidth(H/5);
41 canvas->drawLine(0, 0, W, H, p);
42}
43
44static void draw_rect(SkCanvas* canvas, const SkPaint& paint) {
45 canvas->drawRect(SkRect::MakeWH(W, H), paint);
46}
47
48static void draw_oval(SkCanvas* canvas, const SkPaint& paint) {
49 canvas->drawOval(SkRect::MakeWH(W, H), paint);
50}
51
52static void draw_text(SkCanvas* canvas, const SkPaint& paint) {
53 SkPaint p(paint);
54 p.setTextSize(H/4);
reed@google.coma4f81372012-11-15 15:56:38 +000055 canvas->drawText("Hamburge", 8, 0, H*2/3, p);
reed@google.com5dd85a42012-11-15 13:46:47 +000056}
57
58class SrcModeGM : public skiagm::GM {
59 SkPath fPath;
60public:
61 SrcModeGM() {
reed@google.com86eca472012-11-15 17:24:23 +000062 this->setBGColor(SK_ColorBLACK);
reed@google.com5dd85a42012-11-15 13:46:47 +000063 }
64
65protected:
66 virtual SkString onShortName() {
67 return SkString("srcmode");
68 }
69
70 virtual SkISize onISize() {
reed@google.coma4f81372012-11-15 15:56:38 +000071 return SkISize::Make(640, 760);
reed@google.com5dd85a42012-11-15 13:46:47 +000072 }
73
reed@google.com86eca472012-11-15 17:24:23 +000074 void drawContent(SkCanvas* canvas) {
reed@google.com5dd85a42012-11-15 13:46:47 +000075 canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
76
77 SkPaint paint;
caryclark1818acb2015-07-24 12:09:25 -070078 sk_tool_utils::set_portable_typeface(&paint);
caryclark97a26d02015-07-17 13:20:48 -070079 paint.setColor(0x80F60000);
reed@google.com5dd85a42012-11-15 13:46:47 +000080
81 const Proc procs[] = {
82 draw_hair, draw_thick, draw_rect, draw_oval, draw_text
83 };
84
reed374772b2016-10-05 17:33:02 -070085 const SkBlendMode modes[] = {
86 SkBlendMode::kSrcOver, SkBlendMode::kSrc, SkBlendMode::kClear
reed@google.com5dd85a42012-11-15 13:46:47 +000087 };
88
reed@google.coma4f81372012-11-15 15:56:38 +000089 const PaintProc paintProcs[] = {
90 identity_paintproc, gradient_paintproc
91 };
92
93 for (int aa = 0; aa <= 1; ++aa) {
94 paint.setAntiAlias(SkToBool(aa));
reed@google.com5dd85a42012-11-15 13:46:47 +000095 canvas->save();
reed@google.coma4f81372012-11-15 15:56:38 +000096 for (size_t i = 0; i < SK_ARRAY_COUNT(paintProcs); ++i) {
97 paintProcs[i](&paint);
98 for (size_t x = 0; x < SK_ARRAY_COUNT(modes); ++x) {
reed374772b2016-10-05 17:33:02 -070099 paint.setBlendMode(modes[x]);
reed@google.coma4f81372012-11-15 15:56:38 +0000100 canvas->save();
101 for (size_t y = 0; y < SK_ARRAY_COUNT(procs); ++y) {
102 procs[y](canvas, paint);
103 canvas->translate(0, H * 5 / 4);
104 }
105 canvas->restore();
106 canvas->translate(W * 5 / 4, 0);
107 }
reed@google.com5dd85a42012-11-15 13:46:47 +0000108 }
109 canvas->restore();
reed@google.coma4f81372012-11-15 15:56:38 +0000110 canvas->translate(0, (H * 5 / 4) * SK_ARRAY_COUNT(procs));
reed@google.com5dd85a42012-11-15 13:46:47 +0000111 }
112 }
113
reede8f30622016-03-23 18:59:25 -0700114 static sk_sp<SkSurface> compat_surface(SkCanvas* canvas, const SkISize& size, bool skipGPU) {
commit-bot@chromium.org32678d92014-01-15 02:38:22 +0000115 SkImageInfo info = SkImageInfo::MakeN32Premul(size);
reed52d9ac62014-06-30 09:05:34 -0700116
117 bool callNewSurface = true;
mike@reedtribe.org15889742012-11-16 02:31:03 +0000118#if SK_SUPPORT_GPU
reed52d9ac62014-06-30 09:05:34 -0700119 if (canvas->getGrContext() && skipGPU) {
120 callNewSurface = false;
mike@reedtribe.org92aa7562012-11-16 02:23:10 +0000121 }
mike@reedtribe.org15889742012-11-16 02:31:03 +0000122#endif
reede8f30622016-03-23 18:59:25 -0700123 sk_sp<SkSurface> surface = callNewSurface ? canvas->makeSurface(info) : nullptr;
halcanary96fcdcc2015-08-27 07:41:13 -0700124 if (nullptr == surface) {
reed52d9ac62014-06-30 09:05:34 -0700125 // picture canvas will return null, so fall-back to raster
reede8f30622016-03-23 18:59:25 -0700126 surface = SkSurface::MakeRaster(info);
reed52d9ac62014-06-30 09:05:34 -0700127 }
128 return surface;
reed@google.com86eca472012-11-15 17:24:23 +0000129 }
130
131 virtual void onDraw(SkCanvas* canvas) {
reede8f30622016-03-23 18:59:25 -0700132 auto surf(compat_surface(canvas, this->getISize(), this->isCanvasDeferred()));
reed@google.com86eca472012-11-15 17:24:23 +0000133 surf->getCanvas()->drawColor(SK_ColorWHITE);
134 this->drawContent(surf->getCanvas());
halcanary96fcdcc2015-08-27 07:41:13 -0700135 surf->draw(canvas, 0, 0, nullptr);
reed@google.com86eca472012-11-15 17:24:23 +0000136 }
137
reed@google.com5dd85a42012-11-15 13:46:47 +0000138private:
139 typedef skiagm::GM INHERITED;
140};
141
142///////////////////////////////////////////////////////////////////////////////
143
144DEF_GM(return new SrcModeGM;)