skia2/samplecode/SampleEmboss.cpp
commit-bot@chromium.org 7c9d0f3104 Factory methods for heap-allocated SkMaskFilter objects.
This is part of an effort to ensure that all SkPaint effects can only be
allocated on the heap.

This patch makes the constructors of SkMaskFilter and its subclasses non-public
and instead provides factory methods for  creating these objects on the heap. We
temporarily keep constructor of publicly visible classes public behind a flag.

BUG=skia:2187
R=scroggo@google.com, mtklein@google.com, reed@google.com

Author: dominikg@chromium.org

Review URL: https://codereview.chromium.org/173633003

git-svn-id: http://skia.googlecode.com/svn/trunk@13527 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-02-21 10:13:32 +00:00

74 lines
1.9 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 "SkBlurMask.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkColorShader.h"
#include "SkEmbossMaskFilter.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkKernel33MaskFilter.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
#include "SkTypeface.h"
#include "SkXfermode.h"
class EmbossView : public SampleView {
SkEmbossMaskFilter::Light fLight;
public:
EmbossView() {
fLight.fDirection[0] = SK_Scalar1;
fLight.fDirection[1] = SK_Scalar1;
fLight.fDirection[2] = SK_Scalar1;
fLight.fAmbient = 128;
fLight.fSpecular = 16*2;
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Emboss");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkIntToScalar(10));
paint.setMaskFilter(SkEmbossMaskFilter::Create(
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(4)), fLight))->unref();
paint.setShader(new SkColorShader(SK_ColorBLUE))->unref();
paint.setDither(true);
canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
SkIntToScalar(30), paint);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new EmbossView; }
static SkViewRegister reg(MyFactory);