02939ce4bd
Fix these class of warnings: - unused functions - unused locals - sign mismatch - missing function prototypes - missing newline at end of file - 64 to 32 bit truncation The changes prefer to link in dead code in the debug build with 'if (false)' than to comment it out, but trivial cases are commented out or sometimes deleted if it appears to be a copy/paste error. Review URL: https://codereview.appspot.com/6301044 git-svn-id: http://skia.googlecode.com/svn/trunk@4183 2bbb7eff-a529-9590-31e7-b0007b416f81
139 lines
4.2 KiB
C++
139 lines
4.2 KiB
C++
/*
|
|
* 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 "SkView.h"
|
|
#include "SkCanvas.h"
|
|
#include "SkDevice.h"
|
|
#include "SkColorPriv.h"
|
|
#include "SkShader.h"
|
|
|
|
static const struct {
|
|
SkXfermode::Mode fMode;
|
|
const char* fLabel;
|
|
} gModes[] = {
|
|
{ SkXfermode::kClear_Mode, "Clear" },
|
|
{ SkXfermode::kSrc_Mode, "Src" },
|
|
{ SkXfermode::kDst_Mode, "Dst" },
|
|
{ SkXfermode::kSrcOver_Mode, "SrcOver" },
|
|
{ SkXfermode::kDstOver_Mode, "DstOver" },
|
|
{ SkXfermode::kSrcIn_Mode, "SrcIn" },
|
|
{ SkXfermode::kDstIn_Mode, "DstIn" },
|
|
{ SkXfermode::kSrcOut_Mode, "SrcOut" },
|
|
{ SkXfermode::kDstOut_Mode, "DstOut" },
|
|
{ SkXfermode::kSrcATop_Mode, "SrcATop" },
|
|
{ SkXfermode::kDstATop_Mode, "DstATop" },
|
|
{ SkXfermode::kXor_Mode, "Xor" },
|
|
};
|
|
|
|
const int gWidth = 64;
|
|
const int gHeight = 64;
|
|
const SkScalar W = SkIntToScalar(gWidth);
|
|
const SkScalar H = SkIntToScalar(gHeight);
|
|
|
|
static SkScalar drawCell(SkCanvas* canvas, SkXfermode* mode, SkAlpha a0, SkAlpha a1) {
|
|
|
|
SkPaint paint;
|
|
paint.setAntiAlias(true);
|
|
|
|
SkRect r = SkRect::MakeWH(W, H);
|
|
r.inset(W/10, H/10);
|
|
|
|
paint.setColor(SK_ColorBLUE);
|
|
paint.setAlpha(a0);
|
|
canvas->drawOval(r, paint);
|
|
|
|
paint.setColor(SK_ColorRED);
|
|
paint.setAlpha(a1);
|
|
paint.setXfermode(mode);
|
|
for (int angle = 0; angle < 24; ++angle) {
|
|
SkScalar x = SkScalarCos(SkIntToScalar(angle) * (SK_ScalarPI * 2) / 24) * gWidth;
|
|
SkScalar y = SkScalarSin(SkIntToScalar(angle) * (SK_ScalarPI * 2) / 24) * gHeight;
|
|
paint.setStrokeWidth(SK_Scalar1 * angle * 2 / 24);
|
|
canvas->drawLine(W/2, H/2, W/2 + x, H/2 + y, paint);
|
|
}
|
|
|
|
return H;
|
|
}
|
|
|
|
static SkShader* make_bg_shader() {
|
|
SkBitmap bm;
|
|
bm.setConfig(SkBitmap::kARGB_8888_Config, 2, 2);
|
|
bm.allocPixels();
|
|
*bm.getAddr32(0, 0) = *bm.getAddr32(1, 1) = 0xFFFFFFFF;
|
|
*bm.getAddr32(1, 0) = *bm.getAddr32(0, 1) = SkPackARGB32(0xFF, 0xCC, 0xCC, 0xCC);
|
|
|
|
SkShader* s = SkShader::CreateBitmapShader(bm,
|
|
SkShader::kRepeat_TileMode,
|
|
SkShader::kRepeat_TileMode);
|
|
|
|
SkMatrix m;
|
|
m.setScale(SkIntToScalar(6), SkIntToScalar(6));
|
|
s->setLocalMatrix(m);
|
|
return s;
|
|
}
|
|
|
|
class HairModesView : public SampleView {
|
|
SkPaint fBGPaint;
|
|
public:
|
|
HairModesView() {
|
|
fBGPaint.setShader(make_bg_shader())->unref();
|
|
}
|
|
|
|
protected:
|
|
// overrides from SkEventSink
|
|
virtual bool onQuery(SkEvent* evt) {
|
|
if (SampleCode::TitleQ(*evt)) {
|
|
SampleCode::TitleR(evt, "HairlineModes");
|
|
return true;
|
|
}
|
|
return this->INHERITED::onQuery(evt);
|
|
}
|
|
|
|
virtual void onDrawContent(SkCanvas* canvas) {
|
|
const SkRect bounds = SkRect::MakeWH(W, H);
|
|
static const SkAlpha gAlphaValue[] = { 0xFF, 0x88, 0x88 };
|
|
|
|
canvas->translate(SkIntToScalar(4), SkIntToScalar(4));
|
|
|
|
for (int alpha = 0; alpha < 4; ++alpha) {
|
|
canvas->save();
|
|
canvas->save();
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); ++i) {
|
|
if (6 == i) {
|
|
canvas->restore();
|
|
canvas->translate(W * 5, 0);
|
|
canvas->save();
|
|
}
|
|
SkXfermode* mode = SkXfermode::Create(gModes[i].fMode);
|
|
|
|
canvas->drawRect(bounds, fBGPaint);
|
|
canvas->saveLayer(&bounds, NULL);
|
|
SkScalar dy = drawCell(canvas, mode,
|
|
gAlphaValue[alpha & 1],
|
|
gAlphaValue[alpha & 2]);
|
|
canvas->restore();
|
|
|
|
canvas->translate(0, dy * 5 / 4);
|
|
SkSafeUnref(mode);
|
|
}
|
|
canvas->restore();
|
|
canvas->restore();
|
|
canvas->translate(W * 5 / 4, 0);
|
|
}
|
|
}
|
|
|
|
private:
|
|
typedef SampleView INHERITED;
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
static SkView* MyFactory() { return new HairModesView; }
|
|
static SkViewRegister reg(MyFactory);
|
|
|