blob: 8ef5fc92292ccc4ad8915b2d4276a81d90e4f85e [file] [log] [blame]
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +00001
2/*
3 * Copyright 2013 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 "SkGradientShader.h"
10
11using namespace skiagm;
12
13struct GradData {
14 int fCount;
15 const SkColor* fColors;
16 const SkScalar* fPos;
17};
18
19static const SkColor gColors[] = {
20 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
21 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
22 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
23 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
24 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
25 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
26 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
27 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
28};
29
30//static const SkScalar gPos[] = { SK_Scalar1*999/2000, SK_Scalar1*1001/2000 };
31
32static const GradData gGradData[] = {
halcanary96fcdcc2015-08-27 07:41:13 -070033 { 40, gColors, nullptr },
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000034 // { 2, gColors, gPos },
halcanary96fcdcc2015-08-27 07:41:13 -070035 // { 2, gCol2, nullptr },
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000036};
37
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000038static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
39 return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos, data.fCount, tm);
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000040}
41
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000042static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000043 SkPoint center;
44 center.set(SkScalarAve(pts[0].fX, pts[1].fX),
45 SkScalarAve(pts[0].fY, pts[1].fY));
46 return SkGradientShader::CreateRadial(center, center.fX, data.fColors,
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000047 data.fPos, data.fCount, tm);
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000048}
49
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000050static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data, SkShader::TileMode) {
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000051 SkPoint center;
52 center.set(SkScalarAve(pts[0].fX, pts[1].fX),
53 SkScalarAve(pts[0].fY, pts[1].fY));
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000054 return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors, data.fPos, data.fCount);
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000055}
56
57
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000058typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm);
59
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000060static const GradMaker gGradMakers[] = {
skia.committer@gmail.com9e1ec1a2013-07-10 07:00:58 +000061 MakeLinear, MakeRadial, MakeSweep,
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000062};
63
64///////////////////////////////////////////////////////////////////////////////
65
66class GradientsGM : public GM {
67public:
68 GradientsGM() {
caryclark65cdba62015-06-15 06:51:08 -070069 this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000070 }
71
72protected:
mtklein36352bf2015-03-25 18:17:31 -070073 SkString onShortName() override { return SkString("gradient_dirty_laundry"); }
74 SkISize onISize() override { return SkISize::Make(640, 615); }
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000075
mtklein36352bf2015-03-25 18:17:31 -070076 void onDraw(SkCanvas* canvas) override {
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000077 SkPoint pts[2] = { { 0, 0 },
78 { SkIntToScalar(100), SkIntToScalar(100) }
79 };
80 SkShader::TileMode tm = SkShader::kClamp_TileMode;
81 SkRect r = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) };
82 SkPaint paint;
83 paint.setAntiAlias(true);
84
85 canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
86 for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); i++) {
87 canvas->save();
88 for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); j++) {
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000089 SkShader* shader = gGradMakers[j](pts, gGradData[i], tm);
commit-bot@chromium.orgb6865392013-07-09 19:43:29 +000090 paint.setShader(shader)->unref();
91 canvas->drawRect(r, paint);
92 canvas->translate(0, SkIntToScalar(120));
93 }
94 canvas->restore();
95 canvas->translate(SkIntToScalar(120), 0);
96 }
97 }
98
99private:
100 typedef GM INHERITED;
101};
102
103///////////////////////////////////////////////////////////////////////////////
104
105static GM* MyFactory(void*) { return new GradientsGM; }
106static GMRegistry reg(MyFactory);