ede860e91c
Bug: skia: Change-Id: I41480aa89dfcd8cb7e016e477cbabe354f35ce8a Reviewed-on: https://skia-review.googlesource.com/75480 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
108 lines
2.6 KiB
C++
108 lines
2.6 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SampleCode_DEFINED
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#define SampleCode_DEFINED
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#include "SkColor.h"
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#include "SkEvent.h"
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#include "SkView.h"
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class SkAnimTimer;
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#define DEF_SAMPLE(code) \
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static SkView* SK_MACRO_APPEND_LINE(F_)() { code } \
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static SkViewRegister SK_MACRO_APPEND_LINE(R_)(SK_MACRO_APPEND_LINE(F_));
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static const char gCharEvtName[] = "SampleCode_Char_Event";
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static const char gTitleEvtName[] = "SampleCode_Title_Event";
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class SampleCode {
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public:
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static bool CharQ(const SkEvent&, SkUnichar* outUni);
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static bool TitleQ(const SkEvent&);
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static void TitleR(SkEvent*, const char title[]);
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static bool RequestTitle(SkView* view, SkString* title);
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friend class SampleWindow;
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};
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//////////////////////////////////////////////////////////////////////////////
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// interface that constructs SkViews
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class SkViewFactory : public SkRefCnt {
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public:
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virtual SkView* operator() () const = 0;
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};
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typedef SkView* (*SkViewCreateFunc)();
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// wraps SkViewCreateFunc in SkViewFactory interface
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class SkFuncViewFactory : public SkViewFactory {
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public:
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SkFuncViewFactory(SkViewCreateFunc func);
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SkView* operator() () const override;
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private:
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SkViewCreateFunc fCreateFunc;
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};
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class SkViewRegister : public SkRefCnt {
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public:
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explicit SkViewRegister(SkViewFactory*);
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explicit SkViewRegister(SkViewCreateFunc);
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~SkViewRegister() {
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fFact->unref();
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}
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static const SkViewRegister* Head() { return gHead; }
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SkViewRegister* next() const { return fChain; }
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const SkViewFactory* factory() const { return fFact; }
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private:
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SkViewFactory* fFact;
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SkViewRegister* fChain;
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static SkViewRegister* gHead;
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};
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///////////////////////////////////////////////////////////////////////////////
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class SampleView : public SkView {
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public:
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SampleView()
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: fBGColor(SK_ColorWHITE)
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, fHaveCalledOnceBeforeDraw(false)
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{}
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void setBGColor(SkColor color) { fBGColor = color; }
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bool animate(const SkAnimTimer& timer) { return this->onAnimate(timer); }
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static bool IsSampleView(SkView*);
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protected:
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virtual void onDrawBackground(SkCanvas*);
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virtual void onDrawContent(SkCanvas*) = 0;
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virtual bool onAnimate(const SkAnimTimer&) { return false; }
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virtual void onOnceBeforeDraw() {}
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// overrides
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virtual bool onQuery(SkEvent* evt);
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virtual void onDraw(SkCanvas*);
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SkColor fBGColor;
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private:
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bool fHaveCalledOnceBeforeDraw;
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typedef SkView INHERITED;
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};
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#endif
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