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reed@android.com8a1c16f2008-12-17 15:59:43 +00001#include "SampleCode.h"
2#include "SkView.h"
3#include "SkCanvas.h"
4#include "Sk64.h"
5#include "SkCornerPathEffect.h"
6#include "SkGradientShader.h"
7#include "SkGraphics.h"
8#include "SkImageDecoder.h"
9#include "SkKernel33MaskFilter.h"
10#include "SkPath.h"
11#include "SkRandom.h"
12#include "SkRegion.h"
13#include "SkShader.h"
14#include "SkUtils.h"
reed@android.com8a1c16f2008-12-17 15:59:43 +000015#include "SkColorPriv.h"
16#include "SkColorFilter.h"
17#include "SkTime.h"
18#include "SkTypeface.h"
19#include "SkXfermode.h"
20
21#include "SkStream.h"
22#include "SkXMLParser.h"
23#include "SkColorPriv.h"
24#include "SkImageDecoder.h"
25
reed@android.comf2b98d62010-12-20 18:26:13 +000026#if 0
reed@android.com8a1c16f2008-12-17 15:59:43 +000027static int newscale(U8CPU a, U8CPU b, int shift) {
28 unsigned prod = a * b + (1 << (shift - 1));
29 return (prod + (prod >> shift)) >> shift;
30}
31
32static void test_srcover565(SkCanvas* canvas) {
33 const int width = 32;
34 SkBitmap bm1, bm2, bm3;
35 bm1.setConfig(SkBitmap::kRGB_565_Config, width, 256); bm1.allocPixels(NULL);
36 bm2.setConfig(SkBitmap::kRGB_565_Config, width, 256); bm2.allocPixels(NULL);
37 bm3.setConfig(SkBitmap::kRGB_565_Config, width, 256); bm3.allocPixels(NULL);
38
39 int rgb = 0x18;
40 int r = rgb >> 3;
41 int g = rgb >> 2;
42 uint16_t dst = SkPackRGB16(r, g, r);
43 for (int alpha = 0; alpha <= 255; alpha++) {
44 SkPMColor pm = SkPreMultiplyARGB(alpha, rgb, rgb, rgb);
45 uint16_t newdst = SkSrcOver32To16(pm, dst);
46 sk_memset16(bm1.getAddr16(0, alpha), newdst, bm1.width());
47
48 int ia = 255 - alpha;
49 int iscale = SkAlpha255To256(ia);
50 int dr = (SkGetPackedR32(pm) + (r * iscale >> 5)) >> 3;
51 int dg = (SkGetPackedG32(pm) + (g * iscale >> 6)) >> 2;
52
53 sk_memset16(bm2.getAddr16(0, alpha), SkPackRGB16(dr, dg, dr), bm2.width());
54
55 int dr2 = (SkMulDiv255Round(alpha, rgb) + newscale(r, ia, 5)) >> 3;
56 int dg2 = (SkMulDiv255Round(alpha, rgb) + newscale(g, ia, 6)) >> 2;
57
58 sk_memset16(bm3.getAddr16(0, alpha), SkPackRGB16(dr2, dg2, dr2), bm3.width());
59
60// if (mr != dr || mg != dg)
61 {
62// SkDebugf("[%d] macro [%d %d] inline [%d %d] new [%d %d]\n", alpha, mr, mg, dr, dg, dr2, dg2);
63 }
64 }
65
66 SkScalar dx = SkIntToScalar(width+4);
67
68 canvas->drawBitmap(bm1, 0, 0, NULL); canvas->translate(dx, 0);
69 canvas->drawBitmap(bm2, 0, 0, NULL); canvas->translate(dx, 0);
70 canvas->drawBitmap(bm3, 0, 0, NULL); canvas->translate(dx, 0);
71
72 SkRect rect = { 0, 0, SkIntToScalar(bm1.width()), SkIntToScalar(bm1.height()) };
73 SkPaint p;
74 p.setARGB(0xFF, rgb, rgb, rgb);
75 canvas->drawRect(rect, p);
76}
reed@android.comf2b98d62010-12-20 18:26:13 +000077#endif
reed@android.com8a1c16f2008-12-17 15:59:43 +000078
79static void make_bitmaps(int w, int h, SkBitmap* src, SkBitmap* dst) {
80 src->setConfig(SkBitmap::kARGB_8888_Config, w, h);
81 src->allocPixels();
82 src->eraseColor(0);
83
84 SkCanvas c(*src);
85 SkPaint p;
86 SkRect r;
87 SkScalar ww = SkIntToScalar(w);
88 SkScalar hh = SkIntToScalar(h);
89
90 p.setAntiAlias(true);
91 p.setColor(0xFFFFCC44);
92 r.set(0, 0, ww*3/4, hh*3/4);
93 c.drawOval(r, p);
94
95 dst->setConfig(SkBitmap::kARGB_8888_Config, w, h);
96 dst->allocPixels();
97 dst->eraseColor(0);
98 c.setBitmapDevice(*dst);
99
100 p.setColor(0xFF66AAFF);
101 r.set(ww/3, hh/3, ww*19/20, hh*19/20);
102 c.drawRect(r, p);
103}
104
105static uint16_t gBG[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF };
106
107class XfermodesView : public SkView {
reed@android.com8a1c16f2008-12-17 15:59:43 +0000108 SkBitmap fBG;
109 SkBitmap fSrcB, fDstB;
110
reed@android.comf2b98d62010-12-20 18:26:13 +0000111 void draw_mode(SkCanvas* canvas, SkXfermode* mode, int alpha,
112 SkScalar x, SkScalar y) {
reed@android.com8a1c16f2008-12-17 15:59:43 +0000113 SkPaint p;
reed@android.comf2b98d62010-12-20 18:26:13 +0000114
115 canvas->drawBitmap(fSrcB, x, y, &p);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000116 p.setAlpha(alpha);
117 p.setXfermode(mode);
reed@android.comf2b98d62010-12-20 18:26:13 +0000118 canvas->drawBitmap(fDstB, x, y, &p);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000119 }
120
121public:
reed@android.comf2b98d62010-12-20 18:26:13 +0000122 const static int W = 64;
123 const static int H = 64;
reed@android.com8a1c16f2008-12-17 15:59:43 +0000124 XfermodesView() {
125 const int W = 64;
126 const int H = 64;
127
reed@android.com8a1c16f2008-12-17 15:59:43 +0000128 fBG.setConfig(SkBitmap::kARGB_4444_Config, 2, 2, 4);
129 fBG.setPixels(gBG);
130 fBG.setIsOpaque(true);
131
132 make_bitmaps(W, H, &fSrcB, &fDstB);
133 }
134
135protected:
136 // overrides from SkEventSink
137 virtual bool onQuery(SkEvent* evt) {
138 if (SampleCode::TitleQ(*evt)) {
139 SampleCode::TitleR(evt, "Xfermodes");
140 return true;
141 }
142 return this->INHERITED::onQuery(evt);
143 }
144
145 void drawBG(SkCanvas* canvas) {
146 canvas->drawColor(SK_ColorWHITE);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000147 }
148
149 virtual void onDraw(SkCanvas* canvas) {
reed@android.comf2b98d62010-12-20 18:26:13 +0000150 canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
151
reed@android.com8a1c16f2008-12-17 15:59:43 +0000152 this->drawBG(canvas);
153
reed@android.com8a1c16f2008-12-17 15:59:43 +0000154 const struct {
reed@android.coma0f5d152009-06-22 17:38:10 +0000155 SkXfermode::Mode fMode;
reed@android.com8a1c16f2008-12-17 15:59:43 +0000156 const char* fLabel;
157 } gModes[] = {
reed@android.coma0f5d152009-06-22 17:38:10 +0000158 { SkXfermode::kClear_Mode, "Clear" },
159 { SkXfermode::kSrc_Mode, "Src" },
160 { SkXfermode::kDst_Mode, "Dst" },
161 { SkXfermode::kSrcOver_Mode, "SrcOver" },
162 { SkXfermode::kDstOver_Mode, "DstOver" },
163 { SkXfermode::kSrcIn_Mode, "SrcIn" },
164 { SkXfermode::kDstIn_Mode, "DstIn" },
165 { SkXfermode::kSrcOut_Mode, "SrcOut" },
166 { SkXfermode::kDstOut_Mode, "DstOut" },
167 { SkXfermode::kSrcATop_Mode, "SrcATop" },
168 { SkXfermode::kDstATop_Mode, "DstATop" },
169 { SkXfermode::kXor_Mode, "Xor" },
170
171 { SkXfermode::kPlus_Mode, "Plus" },
172 { SkXfermode::kMultiply_Mode, "Multiply" },
173 { SkXfermode::kScreen_Mode, "Screen" },
174 { SkXfermode::kOverlay_Mode, "Overlay" },
175 { SkXfermode::kDarken_Mode, "Darken" },
176 { SkXfermode::kLighten_Mode, "Lighten" },
177 { SkXfermode::kColorDodge_Mode, "ColorDodge" },
178 { SkXfermode::kColorBurn_Mode, "ColorBurn" },
179 { SkXfermode::kHardLight_Mode, "HardLight" },
180 { SkXfermode::kSoftLight_Mode, "SoftLight" },
181 { SkXfermode::kDifference_Mode, "Difference" },
182 { SkXfermode::kExclusion_Mode, "Exclusion" },
reed@android.com8a1c16f2008-12-17 15:59:43 +0000183 };
reed@android.comf2b98d62010-12-20 18:26:13 +0000184
185 const SkScalar w = SkIntToScalar(W);
186 const SkScalar h = SkIntToScalar(H);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000187 SkShader* s = SkShader::CreateBitmapShader(fBG,
188 SkShader::kRepeat_TileMode,
189 SkShader::kRepeat_TileMode);
190 SkMatrix m;
191 m.setScale(SkIntToScalar(6), SkIntToScalar(6));
192 s->setLocalMatrix(m);
193
194 SkPaint labelP;
195 labelP.setAntiAlias(true);
196 labelP.setTextAlign(SkPaint::kCenter_Align);
reed@android.coma0f5d152009-06-22 17:38:10 +0000197
198 const int W = 5;
reed@android.com8a1c16f2008-12-17 15:59:43 +0000199
200 SkScalar x0 = 0;
201 for (int twice = 0; twice < 2; twice++) {
202 SkScalar x = x0, y = 0;
203 for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) {
reed@android.coma0f5d152009-06-22 17:38:10 +0000204 SkXfermode* mode = SkXfermode::Create(gModes[i].fMode);
reed@android.comf2b98d62010-12-20 18:26:13 +0000205 SkAutoUnref aur(mode);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000206 SkRect r;
207 r.set(x, y, x+w, y+h);
reed@android.comf2b98d62010-12-20 18:26:13 +0000208
209 SkPaint p;
reed@android.com8a1c16f2008-12-17 15:59:43 +0000210 p.setStyle(SkPaint::kFill_Style);
211 p.setShader(s);
reed@android.comf2b98d62010-12-20 18:26:13 +0000212 canvas->drawRect(r, p);
213
214 canvas->saveLayer(&r, NULL, SkCanvas::kARGB_ClipLayer_SaveFlag);
215 // canvas->save();
216 draw_mode(canvas, mode, twice ? 0x88 : 0xFF, r.fLeft, r.fTop);
217 canvas->restore();
218
219 r.inset(-SK_ScalarHalf, -SK_ScalarHalf);
220 p.setStyle(SkPaint::kStroke_Style);
221 p.setShader(NULL);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000222 canvas->drawRect(r, p);
223
reed@android.comf2b98d62010-12-20 18:26:13 +0000224#if 1
reed@android.com8a1c16f2008-12-17 15:59:43 +0000225 canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel),
226 x + w/2, y - labelP.getTextSize()/2, labelP);
reed@android.comf2b98d62010-12-20 18:26:13 +0000227#endif
reed@android.com8a1c16f2008-12-17 15:59:43 +0000228 x += w + SkIntToScalar(10);
reed@android.coma0f5d152009-06-22 17:38:10 +0000229 if ((i % W) == W - 1) {
reed@android.com8a1c16f2008-12-17 15:59:43 +0000230 x = x0;
231 y += h + SkIntToScalar(30);
232 }
233 }
reed@android.coma0f5d152009-06-22 17:38:10 +0000234 x0 += SkIntToScalar(400);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000235 }
236 s->unref();
237 }
238
239private:
240 typedef SkView INHERITED;
241};
242
243//////////////////////////////////////////////////////////////////////////////
244
245static SkView* MyFactory() { return new XfermodesView; }
246static SkViewRegister reg(MyFactory);
247