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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SampleCode.h" | 8 #include "SampleCode.h" |
9 #include "SkView.h" | 9 #include "SkView.h" |
10 #include "SkCanvas.h" | 10 #include "SkCanvas.h" |
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56 } | 56 } |
57 nn = SkIntToScalar((unsigned int)n); | 57 nn = SkIntToScalar((unsigned int)n); |
58 mm = m; | 58 mm = m; |
59 } | 59 } |
60 | 60 |
61 SkDEBUGCODE(size_t length2 =) paint.breakText(text, length, width, &mm); | 61 SkDEBUGCODE(size_t length2 =) paint.breakText(text, length, width, &mm); |
62 SkASSERT(length2 == length); | 62 SkASSERT(length2 == length); |
63 SkASSERT(mm == width); | 63 SkASSERT(mm == width); |
64 } | 64 } |
65 | 65 |
66 static SkRandom gRand; | |
67 | |
68 class SkPowerMode : public SkXfermode { | |
69 public: | |
70 SkPowerMode(SkScalar exponent) { this->init(exponent); } | |
71 | |
72 virtual void xfer16(uint16_t dst[], const SkPMColor src[], int count, | |
73 const SkAlpha aa[]) const SK_OVERRIDE; | |
74 | |
75 typedef SkFlattenable* (*Factory)(SkReadBuffer&); | |
76 | |
77 SK_TO_STRING_OVERRIDE() | |
78 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPowerMode) | |
79 | |
80 private: | |
81 SkScalar fExp; // user's value | |
82 uint8_t fTable[256]; // cache | |
83 | |
84 void init(SkScalar exponent); | |
85 SkPowerMode(SkReadBuffer& b) : INHERITED(b) { | |
86 // read the exponent | |
87 this->init(SkFixedToScalar(b.readFixed())); | |
88 } | |
89 virtual void flatten(SkWriteBuffer& b) const SK_OVERRIDE { | |
90 this->INHERITED::flatten(b); | |
91 b.writeFixed(SkScalarToFixed(fExp)); | |
92 } | |
93 | |
94 typedef SkXfermode INHERITED; | |
95 }; | |
96 | |
97 void SkPowerMode::init(SkScalar e) { | |
98 fExp = e; | |
99 float ee = SkScalarToFloat(e); | |
100 | |
101 printf("------ %g\n", ee); | |
102 for (int i = 0; i < 256; i++) { | |
103 float x = i / 255.f; | |
104 // printf(" %d %g", i, x); | |
105 x = powf(x, ee); | |
106 // printf(" %g", x); | |
107 int xx = SkScalarRoundToInt(x * 255); | |
108 // printf(" %d\n", xx); | |
109 fTable[i] = SkToU8(xx); | |
110 } | |
111 } | |
112 | |
113 void SkPowerMode::xfer16(uint16_t dst[], const SkPMColor src[], int count, | |
114 const SkAlpha aa[]) const { | |
115 for (int i = 0; i < count; i++) { | |
116 SkPMColor c = src[i]; | |
117 int r = SkGetPackedR32(c); | |
118 int g = SkGetPackedG32(c); | |
119 int b = SkGetPackedB32(c); | |
120 r = fTable[r]; | |
121 g = fTable[g]; | |
122 b = fTable[b]; | |
123 dst[i] = SkPack888ToRGB16(r, g, b); | |
124 } | |
125 } | |
126 | |
127 #ifndef SK_IGNORE_TO_STRING | |
128 void SkPowerMode::toString(SkString* str) const { | |
129 str->append("SkPowerMode: exponent "); | |
130 str->appendScalar(fExp); | |
131 } | |
132 #endif | |
133 | |
134 static const struct { | 66 static const struct { |
135 const char* fName; | 67 const char* fName; |
136 uint32_t fFlags; | 68 uint32_t fFlags; |
137 bool fFlushCache; | 69 bool fFlushCache; |
138 } gHints[] = { | 70 } gHints[] = { |
139 { "Linear", SkPaint::kLinearText_Flag, false }, | 71 { "Linear", SkPaint::kLinearText_Flag, false }, |
140 { "Normal", 0, true }, | 72 { "Normal", 0, true }, |
141 { "Subpixel", SkPaint::kSubpixelText_Flag, true } | 73 { "Subpixel", SkPaint::kSubpixelText_Flag, true } |
142 }; | 74 }; |
143 | 75 |
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269 int fHints; | 201 int fHints; |
270 SkScalar fClickX; | 202 SkScalar fClickX; |
271 | 203 |
272 typedef SampleView INHERITED; | 204 typedef SampleView INHERITED; |
273 }; | 205 }; |
274 | 206 |
275 ////////////////////////////////////////////////////////////////////////////// | 207 ////////////////////////////////////////////////////////////////////////////// |
276 | 208 |
277 static SkView* MyFactory() { return new TextSpeedView; } | 209 static SkView* MyFactory() { return new TextSpeedView; } |
278 static SkViewRegister reg(MyFactory); | 210 static SkViewRegister reg(MyFactory); |
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