1 /*
2 * Copyright 2013 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 "SkGradientShader.h"
13 #include "SkTypeface.h"
14 #include "SkStream.h"
15 #include "SkPaint.h"
16
make_checker(SkBitmap * bm,int size,int numChecks)17 static void make_checker(SkBitmap* bm, int size, int numChecks) {
18 bm->allocN32Pixels(size, size);
19 for (int y = 0; y < size; ++y) {
20 for (int x = 0; x < size; ++x) {
21 SkPMColor* s = bm->getAddr32(x, y);
22 int cx = (x * numChecks) / size;
23 int cy = (y * numChecks) / size;
24 if ((cx+cy)%2) {
25 *s = 0xFFFFFFFF;
26 } else {
27 *s = 0xFF000000;
28 }
29 }
30 }
31 }
32
setTypeface(SkPaint * paint,const char name[],SkFontStyle style)33 static void setTypeface(SkPaint* paint, const char name[], SkFontStyle style) {
34 sk_tool_utils::set_portable_typeface(paint, name, style);
35 }
36
37 class DownsampleBitmapGM : public skiagm::GM {
38 public:
39 SkBitmap fBM;
40 SkString fName;
41 bool fBitmapMade;
42 SkFilterQuality fFilterQuality;
43
DownsampleBitmapGM(SkFilterQuality filterQuality)44 DownsampleBitmapGM(SkFilterQuality filterQuality)
45 : fFilterQuality(filterQuality)
46 {
47 this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
48 fBitmapMade = false;
49 }
50
filterQualityToString()51 const char* filterQualityToString() {
52 static const char *filterQualityNames[] = {
53 "none", "low", "medium", "high"
54 };
55 return filterQualityNames[fFilterQuality];
56 }
57
58 protected:
59
onShortName()60 SkString onShortName() override {
61 return fName;
62 }
63
onISize()64 SkISize onISize() override {
65 make_bitmap_wrapper();
66 return SkISize::Make(fBM.width(), 4 * fBM.height());
67 }
68
make_bitmap_wrapper()69 void make_bitmap_wrapper() {
70 if (!fBitmapMade) {
71 fBitmapMade = true;
72 make_bitmap();
73 }
74 }
75
76 virtual void make_bitmap() = 0;
77
onDraw(SkCanvas * canvas)78 void onDraw(SkCanvas* canvas) override {
79 make_bitmap_wrapper();
80
81 int curY = 0;
82 int curHeight;
83 float curScale = 1;
84 do {
85
86 SkMatrix matrix;
87 matrix.setScale( curScale, curScale );
88
89 SkPaint paint;
90 paint.setFilterQuality(fFilterQuality);
91
92 canvas->save();
93 canvas->translate(0, (SkScalar)curY);
94 canvas->concat(matrix);
95 canvas->drawBitmap(fBM, 0, 0, &paint);
96 canvas->restore();
97
98 curHeight = (int) (fBM.height() * curScale + 2);
99 curY += curHeight;
100 curScale *= 0.75f;
101 } while (curHeight >= 2 && curY < 4*fBM.height());
102 }
103
104 private:
105 typedef skiagm::GM INHERITED;
106 };
107
108 class DownsampleBitmapTextGM: public DownsampleBitmapGM {
109 public:
DownsampleBitmapTextGM(float textSize,SkFilterQuality filterQuality)110 DownsampleBitmapTextGM(float textSize, SkFilterQuality filterQuality)
111 : INHERITED(filterQuality), fTextSize(textSize)
112 {
113 fName.printf("downsamplebitmap_text_%s_%.2fpt", this->filterQualityToString(), fTextSize);
114 }
115
116 protected:
117 float fTextSize;
118
make_bitmap()119 void make_bitmap() override {
120 fBM.allocN32Pixels(int(fTextSize * 8), int(fTextSize * 6));
121 SkCanvas canvas(fBM);
122 canvas.drawColor(SK_ColorWHITE);
123
124 SkPaint paint;
125 paint.setAntiAlias(true);
126 paint.setSubpixelText(true);
127 paint.setTextSize(fTextSize);
128
129 setTypeface(&paint, "serif", SkFontStyle());
130 canvas.drawString("Hamburgefons", fTextSize/2, 1.2f*fTextSize, paint);
131 setTypeface(&paint, "serif", SkFontStyle::FromOldStyle(SkTypeface::kBold));
132 canvas.drawString("Hamburgefons", fTextSize/2, 2.4f*fTextSize, paint);
133 setTypeface(&paint, "serif", SkFontStyle::FromOldStyle(SkTypeface::kItalic));
134 canvas.drawString("Hamburgefons", fTextSize/2, 3.6f*fTextSize, paint);
135 setTypeface(&paint, "serif", SkFontStyle::FromOldStyle(SkTypeface::kBoldItalic));
136 canvas.drawString("Hamburgefons", fTextSize/2, 4.8f*fTextSize, paint);
137 }
138 private:
139 typedef DownsampleBitmapGM INHERITED;
140 };
141
142 class DownsampleBitmapCheckerboardGM: public DownsampleBitmapGM {
143 public:
DownsampleBitmapCheckerboardGM(int size,int numChecks,SkFilterQuality filterQuality)144 DownsampleBitmapCheckerboardGM(int size, int numChecks, SkFilterQuality filterQuality)
145 : INHERITED(filterQuality), fSize(size), fNumChecks(numChecks)
146 {
147 fName.printf("downsamplebitmap_checkerboard_%s_%d_%d", this->filterQualityToString(), fSize, fNumChecks);
148 }
149
150 protected:
151 int fSize;
152 int fNumChecks;
153
make_bitmap()154 void make_bitmap() override {
155 make_checker(&fBM, fSize, fNumChecks);
156 }
157 private:
158 typedef DownsampleBitmapGM INHERITED;
159 };
160
161 class DownsampleBitmapImageGM: public DownsampleBitmapGM {
162 public:
DownsampleBitmapImageGM(const char filename[],SkFilterQuality filterQuality)163 DownsampleBitmapImageGM(const char filename[], SkFilterQuality filterQuality)
164 : INHERITED(filterQuality), fFilename(filename)
165 {
166 fName.printf("downsamplebitmap_image_%s_%s", this->filterQualityToString(), filename);
167 }
168
169 protected:
170 SkString fFilename;
171 int fSize;
172
make_bitmap()173 void make_bitmap() override {
174 if (!GetResourceAsBitmap(fFilename.c_str(), &fBM)) {
175 fBM.allocN32Pixels(1, 1);
176 fBM.eraseARGB(255, 255, 0 , 0); // red == bad
177 }
178 fSize = fBM.height();
179 }
180 private:
181 typedef DownsampleBitmapGM INHERITED;
182 };
183
184 DEF_GM( return new DownsampleBitmapTextGM(72, kHigh_SkFilterQuality); )
185 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kHigh_SkFilterQuality); )
186 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kHigh_SkFilterQuality); )
187
188 DEF_GM( return new DownsampleBitmapTextGM(72, kMedium_SkFilterQuality); )
189 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kMedium_SkFilterQuality); )
190 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kMedium_SkFilterQuality); )
191
192 DEF_GM( return new DownsampleBitmapTextGM(72, kLow_SkFilterQuality); )
193 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kLow_SkFilterQuality); )
194 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kLow_SkFilterQuality); )
195
196 DEF_GM( return new DownsampleBitmapTextGM(72, kNone_SkFilterQuality); )
197 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kNone_SkFilterQuality); )
198 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kNone_SkFilterQuality); )
199