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reed@google.come8055352011-11-28 16:31:28 +00001/*
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 "SkGradientShader.h"
tomhudson@google.comcb325ce2012-07-11 14:41:19 +000011#include "SkTypeface.h"
reed@google.come8055352011-11-28 16:31:28 +000012
reed@google.comfb823002011-11-30 14:29:55 +000013// test shader w/ transparency
reed@google.come8055352011-11-28 16:31:28 +000014static SkShader* make_grad(SkScalar width) {
reed@google.comfb823002011-11-30 14:29:55 +000015 SkColor colors[] = { SK_ColorRED, 0x0000FF00, SK_ColorBLUE };
reed@google.come8055352011-11-28 16:31:28 +000016 SkPoint pts[] = { { 0, 0 }, { width, 0 } };
reed@google.comfb823002011-11-30 14:29:55 +000017 return SkGradientShader::CreateLinear(pts, colors, NULL,
reed@google.come8055352011-11-28 16:31:28 +000018 SK_ARRAY_COUNT(colors),
19 SkShader::kMirror_TileMode);
20}
21
reed@google.comfb823002011-11-30 14:29:55 +000022// test opaque shader
reed@google.come8055352011-11-28 16:31:28 +000023static SkShader* make_grad2(SkScalar width) {
24 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
25 SkPoint pts[] = { { 0, 0 }, { width, 0 } };
26 return SkGradientShader::CreateLinear(pts, colors, NULL,
27 SK_ARRAY_COUNT(colors),
28 SkShader::kMirror_TileMode);
29}
30
tomhudson@google.comcb325ce2012-07-11 14:41:19 +000031static SkShader* make_chrome_solid() {
32 SkColor colors[] = { SK_ColorGREEN, SK_ColorGREEN };
33 SkPoint pts[] = { { 0, 0 }, { 1, 0 } };
34 return SkGradientShader::CreateLinear(pts, colors, NULL, 2,
35 SkShader::kClamp_TileMode);
36}
37
reed@google.come8055352011-11-28 16:31:28 +000038namespace skiagm {
rmistry@google.comae933ce2012-08-23 18:19:56 +000039
tomhudson@google.comcb325ce2012-07-11 14:41:19 +000040// Replicate chrome layout test - clipped pathed gradient-shaded text
41class ChromeGradTextGM1 : public GM {
42public:
43 ChromeGradTextGM1() { }
44protected:
45
46 virtual SkString onShortName() { return SkString("chrome_gradtext1"); }
47 virtual SkISize onISize() { return make_isize(500, 480); }
48 virtual void onDraw(SkCanvas* canvas) {
49 SkPaint paint;
tomhudson@google.comcb325ce2012-07-11 14:41:19 +000050 SkRect r = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100));
51
52 canvas->clipRect(r);
53
54 paint.setColor(SK_ColorRED);
55 canvas->drawRect(r, paint);
56
57 // Minimal repro doesn't require AA, LCD, or a nondefault typeface
58 paint.setShader(make_chrome_solid())->unref();
59 paint.setTextSize(SkIntToScalar(500));
60
61 canvas->drawText("I", 1, 0, 100, paint);
62 }
63private:
64 typedef GM INHERITED;
65};
66
67
68// Replicate chrome layout test - switching between solid & gadient text
69class ChromeGradTextGM2 : public GM {
70public:
71 ChromeGradTextGM2() { }
72protected:
73
74 virtual SkString onShortName() { return SkString("chrome_gradtext2"); }
75 virtual SkISize onISize() { return make_isize(500, 480); }
76 virtual void onDraw(SkCanvas* canvas) {
77 SkPaint paint;
tomhudson@google.comcb325ce2012-07-11 14:41:19 +000078
79 paint.setStyle(SkPaint::kFill_Style);
80 canvas->drawText("Normal Fill Text", 16, 0, 50, paint);
81 paint.setStyle(SkPaint::kStroke_Style);
82 canvas->drawText("Normal Stroke Text", 18, 0, 100, paint);
83
84 // Minimal repro doesn't require AA, LCD, or a nondefault typeface
85 paint.setShader(make_chrome_solid())->unref();
86
87 paint.setStyle(SkPaint::kFill_Style);
88 canvas->drawText("Gradient Fill Text", 18, 0, 150, paint);
89 paint.setStyle(SkPaint::kStroke_Style);
90 canvas->drawText("Gradient Stroke Text", 20, 0, 200, paint);
91 }
92private:
93 typedef GM INHERITED;
94};
95
96
97
reed@google.come8055352011-11-28 16:31:28 +000098class GradTextGM : public GM {
99public:
100 GradTextGM () {}
101
102protected:
103
104 virtual SkString onShortName() {
105 return SkString("gradtext");
106 }
107
reed@google.comfb823002011-11-30 14:29:55 +0000108 virtual SkISize onISize() { return make_isize(500, 480); }
reed@google.come8055352011-11-28 16:31:28 +0000109
110 static void draw_text(SkCanvas* canvas, const SkPaint& paint) {
111 const char* text = "When in the course of human events";
112 size_t len = strlen(text);
113 canvas->drawText(text, len, 0, 0, paint);
114 }
115
116 static void draw_text3(SkCanvas* canvas, const SkPaint& paint) {
117 SkPaint p(paint);
118
119 p.setAntiAlias(false);
120 draw_text(canvas, p);
121 p.setAntiAlias(true);
reed@google.comfb823002011-11-30 14:29:55 +0000122 canvas->translate(0, paint.getTextSize() * 4/3);
reed@google.come8055352011-11-28 16:31:28 +0000123 draw_text(canvas, p);
124 p.setLCDRenderText(true);
reed@google.comfb823002011-11-30 14:29:55 +0000125 canvas->translate(0, paint.getTextSize() * 4/3);
reed@google.come8055352011-11-28 16:31:28 +0000126 draw_text(canvas, p);
127 }
128
129 virtual void onDraw(SkCanvas* canvas) {
reed@google.come8055352011-11-28 16:31:28 +0000130 SkPaint paint;
reed@google.comfb823002011-11-30 14:29:55 +0000131 paint.setTextSize(SkIntToScalar(26));
reed@google.come8055352011-11-28 16:31:28 +0000132
reed@google.comfb823002011-11-30 14:29:55 +0000133 const SkISize& size = this->getISize();
134 SkRect r = SkRect::MakeWH(SkIntToScalar(size.width()),
135 SkIntToScalar(size.height()) / 2);
136 canvas->drawRect(r, paint);
137
138 canvas->translate(SkIntToScalar(20), paint.getTextSize());
139
140 for (int i = 0; i < 2; ++i) {
141 paint.setShader(make_grad(SkIntToScalar(80)))->unref();
142 draw_text3(canvas, paint);
143
144 canvas->translate(0, paint.getTextSize() * 2);
145
146 paint.setShader(make_grad2(SkIntToScalar(80)))->unref();
147 draw_text3(canvas, paint);
rmistry@google.comae933ce2012-08-23 18:19:56 +0000148
reed@google.comfb823002011-11-30 14:29:55 +0000149 canvas->translate(0, paint.getTextSize() * 2);
150 }
reed@google.come8055352011-11-28 16:31:28 +0000151 }
152
153private:
154 typedef GM INHERITED;
155};
156
157//////////////////////////////////////////////////////////////////////////////
158
159static GM* MyFactory(void*) { return new GradTextGM; }
tomhudson@google.comcb325ce2012-07-11 14:41:19 +0000160static GM* CMyFactory(void*) { return new ChromeGradTextGM1; }
161static GM* CMyFactory2(void*) { return new ChromeGradTextGM2; }
reed@google.come8055352011-11-28 16:31:28 +0000162
tomhudson@google.comcb325ce2012-07-11 14:41:19 +0000163static GMRegistry reg(MyFactory);
164static GMRegistry Creg(CMyFactory);
165static GMRegistry Creg2(CMyFactory2);
reed@google.come8055352011-11-28 16:31:28 +0000166}