зеркало из https://github.com/mozilla/moz-skia.git
155 строки
4.1 KiB
C++
155 строки
4.1 KiB
C++
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/*
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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 "SkKey.h"
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#include "SkView.h"
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#include "SkOSMenu.h"
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class GrContext;
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class SampleCode {
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public:
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static bool KeyQ(const SkEvent&, SkKey* outKey);
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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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static bool PrefSizeQ(const SkEvent&);
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static void PrefSizeR(SkEvent*, SkScalar width, SkScalar height);
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static bool FastTextQ(const SkEvent&);
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static SkMSec GetAnimTime();
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static SkMSec GetAnimTimeDelta();
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static SkScalar GetAnimSecondsDelta();
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static SkScalar GetAnimScalar(SkScalar speedPerSec, SkScalar period = 0);
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// gives a sinusoidal value between 0 and amplitude
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static SkScalar GetAnimSinScalar(SkScalar amplitude,
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SkScalar periodInSec,
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SkScalar phaseInSec = 0);
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static GrContext* GetGr();
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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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virtual SkView* operator() () const SK_OVERRIDE;
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private:
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SkViewCreateFunc fCreateFunc;
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};
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namespace skiagm {
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class GM;
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}
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// factory function that creates a skiagm::GM
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typedef skiagm::GM* (*GMFactoryFunc)(void*);
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// Takes a GM factory function and implements the SkViewFactory interface
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// by making the GM and wrapping it in a GMSampleView. GMSampleView bridges
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// the SampleView interface to skiagm::GM.
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class SkGMSampleViewFactory : public SkViewFactory {
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public:
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SkGMSampleViewFactory(GMFactoryFunc func);
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virtual SkView* operator() () const SK_OVERRIDE;
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private:
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GMFactoryFunc fFunc;
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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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explicit SkViewRegister(GMFactoryFunc);
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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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: fPipeState(SkOSMenu::kOffState)
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, fBGColor(SK_ColorWHITE)
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, fRepeatCount(1)
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, fDebugHitTest(false) {
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}
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void setBGColor(SkColor color) { fBGColor = color; }
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static bool IsSampleView(SkView*);
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static bool SetRepeatDraw(SkView*, int count);
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static bool SetUsePipe(SkView*, SkOSMenu::TriState);
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/**
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* Call this to request menu items from a SampleView.
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* Subclassing notes: A subclass of SampleView can overwrite this method
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* to add new items of various types to the menu and change its title.
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* The events attached to any new menu items must be handled in its onEvent
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* method. See SkOSMenu.h for helper functions.
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*/
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virtual void requestMenu(SkOSMenu* menu) {}
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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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// overrides
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virtual bool onEvent(const SkEvent& evt);
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virtual bool onQuery(SkEvent* evt);
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virtual void draw(SkCanvas*);
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virtual void onDraw(SkCanvas*);
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SkOSMenu::TriState fPipeState;
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SkColor fBGColor;
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private:
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int fRepeatCount;
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bool fDebugHitTest;
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SkIPoint fDebugHitTestLoc;
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typedef SkView INHERITED;
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};
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#endif
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