1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
namespace skiagm {
static void makebm(SkBitmap* bm, int w, int h) {
bm->allocN32Pixels(w, h);
bm->eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(*bm);
SkScalar s = SkIntToScalar(SkMin32(w, h));
static const SkPoint kPts0[] = { { 0, 0 }, { s, s } };
static const SkPoint kPts1[] = { { s/2, 0 }, { s/2, s } };
static const SkScalar kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
static const SkColor kColors0[] = {0x80F00080, 0xF0F08000, 0x800080F0 };
static const SkColor kColors1[] = {0xF08000F0, 0x8080F000, 0xF000F080 };
SkPaint paint;
paint.setShader(SkGradientShader::MakeLinear(kPts0, kColors0, kPos,
SK_ARRAY_COUNT(kColors0), SkShader::kClamp_TileMode));
canvas.drawPaint(paint);
paint.setShader(SkGradientShader::MakeLinear(kPts1, kColors1, kPos,
SK_ARRAY_COUNT(kColors1), SkShader::kClamp_TileMode));
canvas.drawPaint(paint);
}
///////////////////////////////////////////////////////////////////////////////
struct LabeledMatrix {
SkMatrix fMatrix;
const char* fLabel;
};
static const char kText[] = "B";
static const int kTextLen = SK_ARRAY_COUNT(kText) - 1;
static const int kPointSize = 300;
class ShaderText3GM : public GM {
public:
ShaderText3GM() {
this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
}
protected:
SkString onShortName() override {
return SkString("shadertext3");
}
SkISize onISize() override{ return SkISize::Make(820, 930); }
void onOnceBeforeDraw() override {
makebm(&fBmp, kPointSize / 4, kPointSize / 4);
}
void onDraw(SkCanvas* canvas) override {
SkPaint bmpPaint;
bmpPaint.setAntiAlias(true);
bmpPaint.setFilterQuality(kLow_SkFilterQuality);
bmpPaint.setAlpha(0x80);
canvas->drawBitmap(fBmp, 5.f, 5.f, &bmpPaint);
SkPaint outlinePaint;
outlinePaint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&outlinePaint);
outlinePaint.setTextSize(SkIntToScalar(kPointSize));
outlinePaint.setStyle(SkPaint::kStroke_Style);
outlinePaint.setStrokeWidth(0.f);
canvas->translate(15.f, 15.f);
// draw glyphs scaled up
canvas->scale(2.f, 2.f);
static const SkShader::TileMode kTileModes[] = {
SkShader::kRepeat_TileMode,
SkShader::kMirror_TileMode,
};
// position the baseline of the first run
canvas->translate(0.f, 0.75f * kPointSize);
canvas->save();
int i = 0;
for (size_t tm0 = 0; tm0 < SK_ARRAY_COUNT(kTileModes); ++tm0) {
for (size_t tm1 = 0; tm1 < SK_ARRAY_COUNT(kTileModes); ++tm1) {
SkMatrix localM;
localM.setTranslate(5.f, 5.f);
localM.postRotate(20);
localM.postScale(1.15f, .85f);
SkPaint fillPaint;
fillPaint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&fillPaint);
fillPaint.setTextSize(SkIntToScalar(kPointSize));
fillPaint.setFilterQuality(kLow_SkFilterQuality);
fillPaint.setShader(SkShader::MakeBitmapShader(fBmp, kTileModes[tm0],
kTileModes[tm1], &localM));
canvas->drawText(kText, kTextLen, 0, 0, fillPaint);
canvas->drawText(kText, kTextLen, 0, 0, outlinePaint);
SkScalar w = fillPaint.measureText(kText, kTextLen);
canvas->translate(w + 10.f, 0.f);
++i;
if (!(i % 2)) {
canvas->restore();
canvas->translate(0, 0.75f * kPointSize);
canvas->save();
}
}
}
canvas->restore();
}
private:
SkBitmap fBmp;
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new ShaderText3GM; }
static GMRegistry reg(MyFactory);
}
|
