blob: b0637da831fe084783ebd7f1699b7a128e02ac74 [file] [log] [blame]
bsalomon@google.com41fe45b2012-10-10 13:35:23 +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#include "gm.h"
8#include "SkCanvas.h"
9#include "SkGradientShader.h"
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000010
11namespace skiagm {
12
commit-bot@chromium.orgdac52252014-02-17 21:21:46 +000013static void makebm(SkBitmap* bm, int w, int h) {
14 bm->allocN32Pixels(w, h);
junov@google.comdbfac8a2012-12-06 21:47:40 +000015 bm->eraseColor(SK_ColorTRANSPARENT);
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000016
17 SkCanvas canvas(*bm);
18 SkScalar s = SkIntToScalar(SkMin32(w, h));
19 static const SkPoint kPts0[] = { { 0, 0 }, { s, s } };
20 static const SkPoint kPts1[] = { { s, 0 }, { 0, s } };
21 static const SkScalar kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
22 static const SkColor kColors0[] = {0x40FF00FF, 0xF0FFFF00, 0x4000FFFF };
23 static const SkColor kColors1[] = {0xF0FF00FF, 0x80FFFF00, 0xF000FFFF };
skia.committer@gmail.comfc843592012-10-11 02:01:14 +000024
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000025
26 SkPaint paint;
27
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000028 paint.setShader(SkGradientShader::CreateLinear(kPts0, kColors0, kPos,
commit-bot@chromium.org83f23d82014-05-22 12:27:41 +000029 SK_ARRAY_COUNT(kColors0), SkShader::kClamp_TileMode))->unref();
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000030 canvas.drawPaint(paint);
31 paint.setShader(SkGradientShader::CreateLinear(kPts1, kColors1, kPos,
32 SK_ARRAY_COUNT(kColors1), SkShader::kClamp_TileMode))->unref();
33 canvas.drawPaint(paint);
34}
35
36///////////////////////////////////////////////////////////////////////////////
37
38struct LabeledMatrix {
39 SkMatrix fMatrix;
40 const char* fLabel;
41};
42
43class ShaderText2GM : public GM {
44public:
45 ShaderText2GM() {
46 this->setBGColor(0xFFDDDDDD);
47 }
48
49protected:
50
tfarina752e7eb2014-12-20 06:53:43 -080051 SkString onShortName() SK_OVERRIDE {
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000052 return SkString("shadertext2");
53 }
54
tfarina752e7eb2014-12-20 06:53:43 -080055 SkISize onISize() SK_OVERRIDE { return SkISize::Make(1800, 900); }
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000056
mtklein72c9faa2015-01-09 10:06:39 -080057 void onDraw(SkCanvas* canvas) SK_OVERRIDE {
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000058 static const char kText[] = "SKIA";
59 static const int kTextLen = SK_ARRAY_COUNT(kText) - 1;
60 static const int kPointSize = 55;
61
62 SkTDArray<LabeledMatrix> matrices;
63 matrices.append()->fMatrix.reset();
64 matrices.top().fLabel = "Identity";
65 matrices.append()->fMatrix.setScale(1.2f, 0.8f);
66 matrices.top().fLabel = "Scale";
67 matrices.append()->fMatrix.setRotate(10.f);
68 matrices.top().fLabel = "Rotate";
69 matrices.append()->fMatrix.reset();
70 matrices.top().fMatrix.setPerspX(-0.0015f);
71 matrices.top().fMatrix.setPerspY(+0.0015f);
72 matrices.top().fLabel = "Persp";
73
74 SkTDArray<LabeledMatrix> localMatrices;
75 localMatrices.append()->fMatrix.reset();
76 localMatrices.top().fLabel = "Identity";
77 localMatrices.append()->fMatrix.setScale(2.5f, 0.2f);
78 localMatrices.top().fLabel = "Scale";
79 localMatrices.append()->fMatrix.setRotate(45.f);
80 localMatrices.top().fLabel = "Rotate";
81 localMatrices.append()->fMatrix.reset();
82 localMatrices.top().fMatrix.setPerspX(-0.007f);
83 localMatrices.top().fMatrix.setPerspY(+0.008f);
84 localMatrices.top().fLabel = "Persp";
85
86 static SkBitmap bmp;
87 if (bmp.isNull()) {
commit-bot@chromium.orgdac52252014-02-17 21:21:46 +000088 makebm(&bmp, kPointSize / 2, kPointSize / 2);
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000089 }
skia.committer@gmail.comfc843592012-10-11 02:01:14 +000090
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000091 SkPaint fillPaint;
92 fillPaint.setAntiAlias(true);
Cary Clark992c7b02014-07-31 08:58:44 -040093 sk_tool_utils::set_portable_typeface(&fillPaint);
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000094 fillPaint.setTextSize(SkIntToScalar(kPointSize));
reed93a12152015-03-16 10:08:34 -070095 fillPaint.setFilterQuality(kLow_SkFilterQuality);
bsalomon@google.com41fe45b2012-10-10 13:35:23 +000096
97 SkPaint outlinePaint;
98 outlinePaint.setAntiAlias(true);
Cary Clark992c7b02014-07-31 08:58:44 -040099 sk_tool_utils::set_portable_typeface(&outlinePaint);
bsalomon@google.com41fe45b2012-10-10 13:35:23 +0000100 outlinePaint.setTextSize(SkIntToScalar(kPointSize));
101 outlinePaint.setStyle(SkPaint::kStroke_Style);
102 outlinePaint.setStrokeWidth(0.f);
103
104 SkScalar w = fillPaint.measureText(kText, kTextLen);
105 static SkScalar kPadY = 0.5f * kPointSize;
106 static SkScalar kPadX = 1.5f * kPointSize;
107
108 SkPaint strokePaint(fillPaint);
109 strokePaint.setStyle(SkPaint::kStroke_Style);
110 strokePaint.setStrokeWidth(kPointSize * 0.1f);
111
112 SkPaint labelPaint;
113 labelPaint.setColor(0xff000000);
114 labelPaint.setAntiAlias(true);
Cary Clark992c7b02014-07-31 08:58:44 -0400115 sk_tool_utils::set_portable_typeface(&labelPaint);
bsalomon@google.com41fe45b2012-10-10 13:35:23 +0000116 labelPaint.setTextSize(12.f);
117
118 canvas->translate(15.f, 15.f);
119 canvas->drawBitmap(bmp, 0, 0);
120 canvas->translate(0, bmp.height() + labelPaint.getTextSize() + 15.f);
121
122 static const char kLabelLabel[] = "localM / canvasM";
123 canvas->drawText(kLabelLabel, strlen(kLabelLabel), 0, 0, labelPaint);
124 canvas->translate(0, 15.f);
125
126 canvas->save();
127 SkScalar maxLabelW = 0;
128 canvas->translate(0, kPadY / 2 + kPointSize);
129 for (int lm = 0; lm < localMatrices.count(); ++lm) {
130 canvas->drawText(matrices[lm].fLabel, strlen(matrices[lm].fLabel),
131 0, labelPaint.getTextSize() - 1, labelPaint);
132 SkScalar labelW = labelPaint.measureText(matrices[lm].fLabel,
133 strlen(matrices[lm].fLabel));
134 maxLabelW = SkMaxScalar(maxLabelW, labelW);
135 canvas->translate(0.f, 2 * kPointSize + 2.5f * kPadY);
136 }
137 canvas->restore();
138
139 canvas->translate(maxLabelW + kPadX / 2.f, 0.f);
140
141 for (int s = 0; s < 2; ++s) {
142 SkPaint& paint = s ? strokePaint : fillPaint;
143
commit-bot@chromium.org35d48722014-02-13 18:36:36 +0000144 SkScalar columnH = 0;
bsalomon@google.com41fe45b2012-10-10 13:35:23 +0000145 for (int m = 0; m < matrices.count(); ++m) {
146 columnH = 0;
147 canvas->save();
148 canvas->drawText(matrices[m].fLabel, strlen(matrices[m].fLabel),
149 0, labelPaint.getTextSize() - 1, labelPaint);
150 canvas->translate(0, kPadY / 2 + kPointSize);
151 columnH += kPadY / 2 + kPointSize;
152 for (int lm = 0; lm < localMatrices.count(); ++lm) {
commit-bot@chromium.orgbd090452014-04-29 21:46:59 +0000153 paint.setShader(
154 SkShader::CreateBitmapShader(bmp,
155 SkShader::kMirror_TileMode,
156 SkShader::kRepeat_TileMode,
157 &localMatrices[lm].fMatrix))->unref();
bsalomon@google.com41fe45b2012-10-10 13:35:23 +0000158
159 canvas->save();
160 canvas->concat(matrices[m].fMatrix);
161 canvas->drawText(kText, kTextLen, 0, 0, paint);
162 canvas->drawText(kText, kTextLen, 0, 0, outlinePaint);
163 canvas->restore();
164
165 SkPath path;
166 path.arcTo(SkRect::MakeXYWH(-0.1f * w, 0.f,
167 1.2f * w, 2.f * kPointSize),
168 225.f, 359.f,
169 false);
170 path.close();
171
172 canvas->translate(0.f, kPointSize + kPadY);
173 columnH += kPointSize + kPadY;
174
175 canvas->save();
176 canvas->concat(matrices[m].fMatrix);
177 canvas->drawTextOnPath(kText, kTextLen, path, NULL, paint);
178 canvas->drawTextOnPath(kText, kTextLen, path, NULL, outlinePaint);
179 canvas->restore();
180 SkPaint stroke;
181 stroke.setStyle(SkPaint::kStroke_Style);
182 canvas->translate(0.f, kPointSize + kPadY);
183 columnH += kPointSize + kPadY;
184 }
185 canvas->restore();
186 canvas->translate(w + kPadX, 0.f);
187 }
188 if (0 == s) {
189 canvas->drawLine(0.f, -kPadY, 0.f, columnH + kPadY, outlinePaint);
190 canvas->translate(kPadX / 2, 0.f);
191 static const char kFillLabel[] = "Filled";
192 static const char kStrokeLabel[] = "Stroked";
193 SkScalar y = columnH + kPadY / 2;
194 SkScalar fillX = -outlinePaint.measureText(kFillLabel, strlen(kFillLabel)) - kPadX;
195 SkScalar strokeX = kPadX;
196 canvas->drawText(kFillLabel, strlen(kFillLabel), fillX, y, labelPaint);
197 canvas->drawText(kStrokeLabel, strlen(kStrokeLabel), strokeX, y, labelPaint);
198 }
199 }
200 }
201
bsalomon@google.com41fe45b2012-10-10 13:35:23 +0000202private:
203 typedef GM INHERITED;
204};
205
206///////////////////////////////////////////////////////////////////////////////
207
bsalomon@google.com41fe45b2012-10-10 13:35:23 +0000208static GM* MyFactory(void*) { return new ShaderText2GM; }
209static GMRegistry reg(MyFactory);
bsalomon@google.com41fe45b2012-10-10 13:35:23 +0000210}