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
61 SkScalar cx = SkScalarHalf(fBM.width());
62 SkScalar cy = SkScalarHalf(fBM.height());
63 SkScalar scale = this->getScale();
64
65 // these two matrices use a scale factor configured by the subclass
66 fMatrix[0].setScale(scale, scale);
67 fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(scale, scale);
68
69 // up/down scaling mix
70 fMatrix[2].setScale(0.7f, 1.05f);
71 }
72
73 protected:
74 SkBitmap fBM;
75 SkMatrix fMatrix[3];
76
onISize()77 SkISize onISize() override { return SkISize::Make(1024, 768); }
78
79 virtual void makeBitmap() = 0;
80 virtual SkScalar getScale() = 0;
81
onDraw(SkCanvas * canvas)82 void onDraw(SkCanvas* canvas) override {
83
84 canvas->translate(10, 10);
85 for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrix); ++i) {
86 SkSize size = computeSize(fBM, fMatrix[i]);
87 size.fWidth += 20;
88 size.fHeight += 20;
89
90 draw_row(canvas, fBM, fMatrix[i], size.fWidth);
91 canvas->translate(0, size.fHeight);
92 }
93 }
94 };
95
96 class FilterBitmapTextGM: public FilterBitmapGM {
97 public:
FilterBitmapTextGM(float textSize)98 FilterBitmapTextGM(float textSize) : fTextSize(textSize) {}
99
100 private:
onShortName()101 SkString onShortName() override {
102 return SkStringPrintf("filterbitmap_text_%.2fpt", fTextSize);
103 }
104 const float fTextSize;
105
getScale()106 SkScalar getScale() override {
107 return 32.f/fTextSize;
108 }
109
makeBitmap()110 void makeBitmap() override {
111 fBM.allocN32Pixels(int(fTextSize * 8), int(fTextSize * 6));
112 SkCanvas canvas(fBM);
113 canvas.drawColor(SK_ColorWHITE);
114
115 SkPaint paint;
116 SkFont font;
117 font.setSize(fTextSize);
118 font.setSubpixel(true);
119
120 setTypeface(&font, "serif", SkFontStyle::Normal());
121 canvas.drawString("Hamburgefons", fTextSize/2, 1.2f*fTextSize, font, paint);
122 setTypeface(&font, "serif", SkFontStyle::Bold());
123 canvas.drawString("Hamburgefons", fTextSize/2, 2.4f*fTextSize, font, paint);
124 setTypeface(&font, "serif", SkFontStyle::Italic());
125 canvas.drawString("Hamburgefons", fTextSize/2, 3.6f*fTextSize, font, paint);
126 setTypeface(&font, "serif", SkFontStyle::BoldItalic());
127 canvas.drawString("Hamburgefons", fTextSize/2, 4.8f*fTextSize, font, paint);
128 }
129 };
130
131 class FilterBitmapCheckerboardGM: public FilterBitmapGM {
onShortName()132 SkString onShortName() override {
133 return SkStringPrintf("filterbitmap_checkerboard_%d_%d%s",
134 fSize, fNumChecks, fConvertToG8 ? "_g8" : "");
135 }
136 public:
FilterBitmapCheckerboardGM(int size,int num_checks,bool convertToG8=false)137 FilterBitmapCheckerboardGM(int size, int num_checks, bool convertToG8 = false)
138 : fSize(size), fNumChecks(num_checks), fConvertToG8(convertToG8) {}
139
140 protected:
141 int fSize;
142 int fNumChecks;
143
getScale()144 SkScalar getScale() override {
145 return 192.f/fSize;
146 }
147
makeBitmap()148 void makeBitmap() override {
149 fBM.allocN32Pixels(fSize, fSize);
150 for (int y = 0; y < fSize; y ++) {
151 for (int x = 0; x < fSize; x ++) {
152 SkPMColor* s = fBM.getAddr32(x, y);
153 int cx = (x * fNumChecks) / fSize;
154 int cy = (y * fNumChecks) / fSize;
155 if ((cx+cy)%2) {
156 *s = 0xFFFFFFFF;
157 } else {
158 *s = 0xFF000000;
159 }
160 }
161 }
162 if (fConvertToG8) {
163 SkBitmap tmp;
164 ToolUtils::copy_to_g8(&tmp, fBM);
165 fBM = tmp;
166 }
167 }
168 private:
169 const bool fConvertToG8;
170 typedef FilterBitmapGM INHERITED;
171 };
172
173 class FilterBitmapImageGM: public FilterBitmapGM {
174 const char* fFilename;
175 int fSize;
176
onShortName()177 SkString onShortName() override {
178 return SkStringPrintf("filterbitmap_image_%s%s", fFilename, fConvertToG8 ? "_g8" : "");
179 }
180
181 public:
FilterBitmapImageGM(const char filename[],bool convertToG8=false)182 FilterBitmapImageGM(const char filename[], bool convertToG8 = false)
183 : fFilename(filename), fConvertToG8(convertToG8) {}
184
185 protected:
getScale()186 SkScalar getScale() override {
187 return 192.f/fSize;
188 }
189
makeBitmap()190 void makeBitmap() override {
191 SkString resource = SkStringPrintf("images/%s", fFilename);
192 if (!GetResourceAsBitmap(resource.c_str(), &fBM)) {
193 fBM.allocN32Pixels(1, 1);
194 fBM.eraseARGB(255, 255, 0 , 0); // red == bad
195 }
196 fSize = fBM.height();
197
198 if (fConvertToG8) {
199 SkBitmap tmp;
200 ToolUtils::copy_to_g8(&tmp, fBM);
201 fBM = tmp;
202 }
203 }
204 private:
205 const bool fConvertToG8;
206 typedef FilterBitmapGM INHERITED;
207 };
208
209 //////////////////////////////////////////////////////////////////////////////
210
211 DEF_GM( return new FilterBitmapTextGM(3); )
212 DEF_GM( return new FilterBitmapTextGM(7); )
213 DEF_GM( return new FilterBitmapTextGM(10); )
214 DEF_GM( return new FilterBitmapCheckerboardGM(4,4); )
215 DEF_GM( return new FilterBitmapCheckerboardGM(32,32); )
216 DEF_GM( return new FilterBitmapCheckerboardGM(32,32, true); )
217 DEF_GM( return new FilterBitmapCheckerboardGM(32,8); )
218 DEF_GM( return new FilterBitmapCheckerboardGM(32,2); )
219 DEF_GM( return new FilterBitmapCheckerboardGM(192,192); )
220 DEF_GM( return new FilterBitmapImageGM("mandrill_16.png"); )
221 DEF_GM( return new FilterBitmapImageGM("mandrill_32.png"); )
222 DEF_GM( return new FilterBitmapImageGM("mandrill_64.png"); )
223 DEF_GM( return new FilterBitmapImageGM("mandrill_64.png", true); )
224 DEF_GM( return new FilterBitmapImageGM("mandrill_128.png"); )
225 DEF_GM( return new FilterBitmapImageGM("mandrill_256.png"); )
226 DEF_GM( return new FilterBitmapImageGM("mandrill_512.png"); )
227 DEF_GM( return new FilterBitmapImageGM("color_wheel.png"); )
228