1 /*
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 "sk_tool_utils.h"
10
11 #include "Resources.h"
12 #include "SkBitmapProcState.h"
13 #include "SkGradientShader.h"
14 #include "SkImageEncoder.h"
15 #include "SkStream.h"
16 #include "SkTypeface.h"
17
computeSize(const SkBitmap & bm,const SkMatrix & mat)18 static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) {
19 SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()),
20 SkIntToScalar(bm.height()));
21 mat.mapRect(&bounds);
22 return SkSize::Make(bounds.width(), bounds.height());
23 }
24
draw_cell(SkCanvas * canvas,const SkBitmap & bm,const SkMatrix & mat,SkScalar dx,SkFilterQuality lvl)25 static void draw_cell(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx,
26 SkFilterQuality lvl) {
27 SkPaint paint;
28 paint.setFilterQuality(lvl);
29
30 SkAutoCanvasRestore acr(canvas, true);
31
32 canvas->translate(dx, 0);
33 canvas->concat(mat);
34 canvas->drawBitmap(bm, 0, 0, &paint);
35 }
36
draw_row(SkCanvas * canvas,const SkBitmap & bm,const SkMatrix & mat,SkScalar dx)37 static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) {
38 draw_cell(canvas, bm, mat, 0 * dx, kNone_SkFilterQuality);
39 draw_cell(canvas, bm, mat, 1 * dx, kLow_SkFilterQuality);
40 draw_cell(canvas, bm, mat, 2 * dx, kMedium_SkFilterQuality);
41 draw_cell(canvas, bm, mat, 3 * dx, kHigh_SkFilterQuality);
42 }
43
44 class FilterIndiaBoxGM : public skiagm::GM {
onOnceBeforeDraw()45 void onOnceBeforeDraw() override {
46 this->makeBitmap();
47
48 SkScalar cx = SkScalarHalf(fBM.width());
49 SkScalar cy = SkScalarHalf(fBM.height());
50
51 float vertScale = 30.0f/55.0f;
52 float horizScale = 150.0f/200.0f;
53
54 fMatrix[0].setScale(horizScale, vertScale);
55 fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(horizScale, vertScale);
56 }
57
58 public:
59 SkBitmap fBM;
60 SkMatrix fMatrix[2];
61 SkString fName;
62
FilterIndiaBoxGM()63 FilterIndiaBoxGM() {
64 this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
65 }
66
FilterIndiaBoxGM(const char filename[])67 FilterIndiaBoxGM(const char filename[]) : fFilename(filename) {
68 fName.printf("filterindiabox");
69 }
70
71 protected:
onShortName()72 SkString onShortName() override {
73 return fName;
74 }
75
onISize()76 SkISize onISize() override {
77 return SkISize::Make(680, 130);
78 }
79
onDraw(SkCanvas * canvas)80 void onDraw(SkCanvas* canvas) override {
81 canvas->translate(10, 10);
82 for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrix); ++i) {
83 SkSize size = computeSize(fBM, fMatrix[i]);
84 size.fWidth += 20;
85 size.fHeight += 20;
86
87 draw_row(canvas, fBM, fMatrix[i], size.fWidth);
88 canvas->translate(0, size.fHeight);
89 }
90 }
91
92 protected:
93 SkString fFilename;
94 int fSize;
95
getScale()96 SkScalar getScale() {
97 return 192.f/fSize;
98 }
99
makeBitmap()100 void makeBitmap() {
101 if (!GetResourceAsBitmap(fFilename.c_str(), &fBM)) {
102 fBM.allocN32Pixels(1, 1);
103 fBM.eraseARGB(255, 255, 0 , 0); // red == bad
104 }
105 fSize = fBM.height();
106 }
107 private:
108 typedef skiagm::GM INHERITED;
109 };
110
111 //////////////////////////////////////////////////////////////////////////////
112
113
114 DEF_GM( return new FilterIndiaBoxGM("images/box.gif"); )
115
