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/gm.h"
9 #include "include/core/SkBitmap.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkFilterQuality.h"
13 #include "include/core/SkFont.h"
14 #include "include/core/SkFontStyle.h"
15 #include "include/core/SkMatrix.h"
16 #include "include/core/SkPaint.h"
17 #include "include/core/SkRect.h"
18 #include "include/core/SkScalar.h"
19 #include "include/core/SkSize.h"
20 #include "include/core/SkString.h"
21 #include "include/core/SkTypeface.h"
22 #include "include/core/SkTypes.h"
23 #include "tools/Resources.h"
24 #include "tools/ToolUtils.h"
25
setTypeface(SkFont * font,const char name[],SkFontStyle style)26 static void setTypeface(SkFont* font, const char name[], SkFontStyle style) {
27 font->setTypeface(ToolUtils::create_portable_typeface(name, style));
28 }
29
computeSize(const SkBitmap & bm,const SkMatrix & mat)30 static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) {
31 SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()),
32 SkIntToScalar(bm.height()));
33 mat.mapRect(&bounds);
34 return SkSize::Make(bounds.width(), bounds.height());
35 }
36
draw_cell(SkCanvas * canvas,const SkBitmap & bm,const SkMatrix & mat,SkScalar dx,SkFilterQuality lvl)37 static void draw_cell(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx,
38 SkFilterQuality lvl) {
39 SkPaint paint;
40 paint.setFilterQuality(lvl);
41
42 SkAutoCanvasRestore acr(canvas, true);
43 canvas->translate(dx, 0);
44 canvas->concat(mat);
45 canvas->drawBitmap(bm, 0, 0, &paint);
46 }
47
draw_row(SkCanvas * canvas,const SkBitmap & bm,const SkMatrix & mat,SkScalar dx)48 static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) {
49 draw_cell(canvas, bm, mat, 0 * dx, kNone_SkFilterQuality);
50 draw_cell(canvas, bm, mat, 1 * dx, kLow_SkFilterQuality);
51 draw_cell(canvas, bm, mat, 2 * dx, kMedium_SkFilterQuality);
52 draw_cell(canvas, bm, mat, 3 * dx, kHigh_SkFilterQuality);
53 }
54
55 class FilterBitmapGM : public skiagm::GM {
onOnceBeforeDraw()56 void onOnceBeforeDraw() override {
57 this->setBGColor(0xFFDDDDDD);
58
59 this->makeBitmap();
60 fBM.setImmutable();
61
62 SkScalar cx = SkScalarHalf(fBM.width());
63 SkScalar cy = SkScalarHalf(fBM.height());
64 SkScalar scale = this->getScale();
65
66 // these two matrices use a scale factor configured by the subclass
67 fMatrix[0].setScale(scale, scale);
68 fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(scale, scale);
69
70 // up/down scaling mix
71 fMatrix[2].setScale(0.7f, 1.05f);
72 }
73
74 protected:
75 SkBitmap fBM;
76 SkMatrix fMatrix[3];
77
onISize()78 SkISize onISize() override { return SkISize::Make(1024, 768); }
79
80 virtual void makeBitmap() = 0;
81 virtual SkScalar getScale() = 0;
82
onDraw(SkCanvas * canvas)83 void onDraw(SkCanvas* canvas) override {
84
85 canvas->translate(10, 10);
86 for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrix); ++i) {
87 SkSize size = computeSize(fBM, fMatrix[i]);
88 size.fWidth += 20;
89 size.fHeight += 20;
90
91 draw_row(canvas, fBM, fMatrix[i], size.fWidth);
92 canvas->translate(0, size.fHeight);
93 }
94 }
95 };
96
97 class FilterBitmapTextGM: public FilterBitmapGM {
98 public:
FilterBitmapTextGM(float textSize)99 FilterBitmapTextGM(float textSize) : fTextSize(textSize) {}
100
101 private:
onShortName()102 SkString onShortName() override {
103 return SkStringPrintf("filterbitmap_text_%.2fpt", fTextSize);
104 }
105 const float fTextSize;
106
getScale()107 SkScalar getScale() override {
108 return 32.f/fTextSize;
109 }
110
makeBitmap()111 void makeBitmap() override {
112 fBM.allocN32Pixels(int(fTextSize * 8), int(fTextSize * 6));
113 SkCanvas canvas(fBM);
114 canvas.drawColor(SK_ColorWHITE);
115
116 SkPaint paint;
117 SkFont font;
118 font.setSize(fTextSize);
119 font.setSubpixel(true);
120
121 setTypeface(&font, "serif", SkFontStyle::Normal());
122 canvas.drawString("Hamburgefons", fTextSize/2, 1.2f*fTextSize, font, paint);
123 setTypeface(&font, "serif", SkFontStyle::Bold());
124 canvas.drawString("Hamburgefons", fTextSize/2, 2.4f*fTextSize, font, paint);
125 setTypeface(&font, "serif", SkFontStyle::Italic());
126 canvas.drawString("Hamburgefons", fTextSize/2, 3.6f*fTextSize, font, paint);
127 setTypeface(&font, "serif", SkFontStyle::BoldItalic());
128 canvas.drawString("Hamburgefons", fTextSize/2, 4.8f*fTextSize, font, paint);
129 }
130 };
131
132 class FilterBitmapCheckerboardGM: public FilterBitmapGM {
onShortName()133 SkString onShortName() override {
134 return SkStringPrintf("filterbitmap_checkerboard_%d_%d%s",
135 fSize, fNumChecks, fConvertToG8 ? "_g8" : "");
136 }
137 public:
FilterBitmapCheckerboardGM(int size,int num_checks,bool convertToG8=false)138 FilterBitmapCheckerboardGM(int size, int num_checks, bool convertToG8 = false)
139 : fSize(size), fNumChecks(num_checks), fConvertToG8(convertToG8) {}
140
141 protected:
142 int fSize;
143 int fNumChecks;
144
getScale()145 SkScalar getScale() override {
146 return 192.f/fSize;
147 }
148
makeBitmap()149 void makeBitmap() override {
150 fBM.allocN32Pixels(fSize, fSize);
151 for (int y = 0; y < fSize; y ++) {
152 for (int x = 0; x < fSize; x ++) {
153 SkPMColor* s = fBM.getAddr32(x, y);
154 int cx = (x * fNumChecks) / fSize;
155 int cy = (y * fNumChecks) / fSize;
156 if ((cx+cy)%2) {
157 *s = 0xFFFFFFFF;
158 } else {
159 *s = 0xFF000000;
160 }
161 }
162 }
163 if (fConvertToG8) {
164 SkBitmap tmp;
165 ToolUtils::copy_to_g8(&tmp, fBM);
166 fBM = tmp;
167 }
168 }
169 private:
170 const bool fConvertToG8;
171 using INHERITED = FilterBitmapGM;
172 };
173
174 class FilterBitmapImageGM: public FilterBitmapGM {
175 const char* fFilename;
176 int fSize;
177
onShortName()178 SkString onShortName() override {
179 return SkStringPrintf("filterbitmap_image_%s%s", fFilename, fConvertToG8 ? "_g8" : "");
180 }
181
182 public:
FilterBitmapImageGM(const char filename[],bool convertToG8=false)183 FilterBitmapImageGM(const char filename[], bool convertToG8 = false)
184 : fFilename(filename), fConvertToG8(convertToG8) {}
185
186 protected:
getScale()187 SkScalar getScale() override {
188 return 192.f/fSize;
189 }
190
makeBitmap()191 void makeBitmap() override {
192 SkString resource = SkStringPrintf("images/%s", fFilename);
193 if (!GetResourceAsBitmap(resource.c_str(), &fBM)) {
194 fBM.allocN32Pixels(1, 1);
195 fBM.eraseARGB(255, 255, 0 , 0); // red == bad
196 }
197 fSize = fBM.height();
198
199 if (fConvertToG8) {
200 SkBitmap tmp;
201 ToolUtils::copy_to_g8(&tmp, fBM);
202 fBM = tmp;
203 }
204 }
205 private:
206 const bool fConvertToG8;
207 using INHERITED = FilterBitmapGM;
208 };
209
210 //////////////////////////////////////////////////////////////////////////////
211
212 DEF_GM( return new FilterBitmapTextGM(3); )
213 DEF_GM( return new FilterBitmapTextGM(7); )
214 DEF_GM( return new FilterBitmapTextGM(10); )
215 DEF_GM( return new FilterBitmapCheckerboardGM(4,4); )
216 DEF_GM( return new FilterBitmapCheckerboardGM(32,32); )
217 DEF_GM( return new FilterBitmapCheckerboardGM(32,32, true); )
218 DEF_GM( return new FilterBitmapCheckerboardGM(32,8); )
219 DEF_GM( return new FilterBitmapCheckerboardGM(32,2); )
220 DEF_GM( return new FilterBitmapCheckerboardGM(192,192); )
221 DEF_GM( return new FilterBitmapImageGM("mandrill_16.png"); )
222 DEF_GM( return new FilterBitmapImageGM("mandrill_32.png"); )
223 DEF_GM( return new FilterBitmapImageGM("mandrill_64.png"); )
224 DEF_GM( return new FilterBitmapImageGM("mandrill_64.png", true); )
225 DEF_GM( return new FilterBitmapImageGM("mandrill_128.png"); )
226 DEF_GM( return new FilterBitmapImageGM("mandrill_256.png"); )
227 DEF_GM( return new FilterBitmapImageGM("mandrill_512.png"); )
228 DEF_GM( return new FilterBitmapImageGM("color_wheel.png"); )
229