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
|
/*
* 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 "SampleCode.h"
#include "SkColorPriv.h"
#include "SkShader.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkUtils.h"
static SkBitmap make_bitmap() {
const int N = 1;
SkPMColor c[N];
for (int i = 0; i < N; i++) {
c[i] = SkPackARGB32(0x80, 0x80, 0, 0);
}
SkBitmap bm;
bm.allocPixels(SkImageInfo::Make(1, 1, kIndex_8_SkColorType,
kPremul_SkAlphaType),
SkColorTable::Make(c, N));
for (int y = 0; y < bm.height(); y++) {
uint8_t* p = bm.getAddr8(0, y);
for (int x = 0; x < bm.width(); x++) {
p[x] = 0;
}
}
return bm;
}
class TinyBitmapView : public SampleView {
SkBitmap fBM;
public:
TinyBitmapView() {
fBM = make_bitmap();
this->setBGColor(0xFFDDDDDD);
}
protected:
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "TinyBitmap");
return true;
}
return this->INHERITED::onQuery(evt);
}
static void setBitmapOpaque(SkBitmap* bm, bool isOpaque) {
bm->setAlphaType(isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType);
}
void onDrawContent(SkCanvas* canvas) override {
SkPaint paint;
paint.setShader(SkShader::MakeBitmapShader(fBM, SkShader::kRepeat_TileMode,
SkShader::kMirror_TileMode));
canvas->drawPaint(paint);
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new TinyBitmapView; }
static SkViewRegister reg(MyFactory);
|
