blob: d207ed1a2255eda44a6183428c94a2799be8046d [file] [log] [blame]
bsalomon@google.com1a38d552012-03-15 14:40:46 +00001
2/*
3 * Copyright 2012 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
10#include "SkColorPriv.h"
11#include "SkShader.h"
12
13namespace skiagm {
14
15class BigMatrixGM : public GM {
16public:
17 BigMatrixGM() {
18 this->setBGColor(0xFF66AA99);
19 }
20
21protected:
22 virtual SkString onShortName() {
23 return SkString("bigmatrix");
24 }
25
26 virtual SkISize onISize() {
27 return make_isize(50, 50);
28 }
29
30 virtual void onDraw(SkCanvas* canvas) {
31 SkMatrix m;
32 m.reset();
33 m.setRotate(33 * SK_Scalar1);
34 m.postScale(3000 * SK_Scalar1, 3000 * SK_Scalar1);
35 m.postTranslate(6000 * SK_Scalar1, -5000 * SK_Scalar1);
36 canvas->concat(m);
37
38 SkPaint paint;
39 paint.setColor(SK_ColorRED);
40 paint.setAntiAlias(true);
41
reed@google.com57b19352012-04-19 19:25:49 +000042 bool success = m.invert(&m);
bsalomon@google.com1a38d552012-03-15 14:40:46 +000043
44 SkPath path;
45
46 SkPoint pt = {10 * SK_Scalar1, 10 * SK_Scalar1};
47 SkScalar small = 1 / (500 * SK_Scalar1);
48
49 m.mapPoints(&pt, 1);
50 path.addCircle(pt.fX, pt.fY, small);
51 canvas->drawPath(path, paint);
52
53 pt.set(30 * SK_Scalar1, 10 * SK_Scalar1);
54 m.mapPoints(&pt, 1);
55 SkRect rect = {pt.fX - small, pt.fY - small,
56 pt.fX + small, pt.fY + small};
57 canvas->drawRect(rect, paint);
58
59 SkBitmap bmp;
60 bmp.setConfig(SkBitmap::kARGB_8888_Config, 2, 2);
61 bmp.allocPixels();
62 bmp.lockPixels();
63 uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp.getPixels());
64 pixels[0] = SkPackARGB32(0xFF, 0xFF, 0x00, 0x00);
65 pixels[1] = SkPackARGB32(0xFF, 0x00, 0xFF, 0x00);
66 pixels[2] = SkPackARGB32(0x80, 0x00, 0x00, 0x00);
67 pixels[3] = SkPackARGB32(0xFF, 0x00, 0x00, 0xFF);
68 bmp.unlockPixels();
69 pt.set(30 * SK_Scalar1, 30 * SK_Scalar1);
70 m.mapPoints(&pt, 1);
71 SkShader* shader = SkShader::CreateBitmapShader(
72 bmp,
73 SkShader::kRepeat_TileMode,
74 SkShader::kRepeat_TileMode);
75 SkMatrix s;
76 s.reset();
77 s.setScale(SK_Scalar1 / 1000, SK_Scalar1 / 1000);
78 shader->setLocalMatrix(s);
79 paint.setShader(shader)->unref();
80 paint.setAntiAlias(false);
81 paint.setFilterBitmap(true);
82 rect.setLTRB(pt.fX - small, pt.fY - small,
83 pt.fX + small, pt.fY + small);
84 canvas->drawRect(rect, paint);
85 }
86
87private:
88 typedef GM INHERITED;
89};
90
91//////////////////////////////////////////////////////////////////////////////
92
93static GM* MyFactory(void*) { return new BigMatrixGM; }
94static GMRegistry reg(MyFactory);
95
96}
97