skia2/samplecode/SampleShaders.cpp

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Automatic update of all copyright notices to reflect new license terms. I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00
/*
* 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 "DecodeFile.h"
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkXfermode.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
#include "SkTypeface.h"
static sk_sp<SkShader> make_bitmapfade(const SkBitmap& bm) {
SkPoint pts[2];
SkColor colors[2];
pts[0].set(0, 0);
pts[1].set(0, SkIntToScalar(bm.height()));
colors[0] = SK_ColorBLACK;
colors[1] = SkColorSetARGB(0, 0, 0, 0);
auto shaderA = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
auto shaderB = SkShader::MakeBitmapShader(bm,
SkShader::kClamp_TileMode, SkShader::kClamp_TileMode);
return SkShader::MakeComposeShader(std::move(shaderB), std::move(shaderA), SkBlendMode::kDstIn);
}
class ShaderView : public SampleView {
public:
sk_sp<SkShader> fShader;
SkBitmap fBitmap;
ShaderView() {
decode_file("/skimages/logo.gif", &fBitmap);
SkPoint pts[2];
SkColor colors[2];
pts[0].set(0, 0);
pts[1].set(SkIntToScalar(100), 0);
colors[0] = SK_ColorRED;
colors[1] = SK_ColorBLUE;
auto shaderA = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
pts[0].set(0, 0);
pts[1].set(0, SkIntToScalar(100));
colors[0] = SK_ColorBLACK;
colors[1] = SkColorSetARGB(0x80, 0, 0, 0);
auto shaderB = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
fShader = SkShader::MakeComposeShader(std::move(shaderA), std::move(shaderB),
SkBlendMode::kDstIn);
}
protected:
// overrides from SkEventSink
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Shaders");
return true;
}
return this->INHERITED::onQuery(evt);
}
void onDrawContent(SkCanvas* canvas) override {
canvas->drawBitmap(fBitmap, 0, 0);
canvas->translate(SkIntToScalar(20), SkIntToScalar(120));
SkPaint paint;
SkRect r;
paint.setColor(SK_ColorGREEN);
canvas->drawRectCoords(0, 0, SkIntToScalar(100), SkIntToScalar(100), paint);
paint.setShader(fShader);
canvas->drawRectCoords(0, 0, SkIntToScalar(100), SkIntToScalar(100), paint);
canvas->translate(SkIntToScalar(110), 0);
int w = fBitmap.width();
int h = fBitmap.height();
w = 120;
h = 80;
r.set(0, 0, SkIntToScalar(w), SkIntToScalar(h));
paint.setShader(nullptr);
canvas->drawRect(r, paint);
paint.setShader(make_bitmapfade(fBitmap));
canvas->drawRect(r, paint);
}
SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override {
this->inval(nullptr);
return this->INHERITED::onFindClickHandler(x, y, modi);
}
bool onClick(Click* click) override {
return this->INHERITED::onClick(click);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new ShaderView; }
static SkViewRegister reg(MyFactory);