src/views/SkWindow.cpp - platform/external/skia - Git at Google


 /*
  * 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 "SkWindow.h"
 #include "SkCanvas.h"
 #include "SkDevice.h"
 #include "SkOSMenu.h"
 #include "SkSystemEventTypes.h"
 #include "SkTime.h"

 #define SK_EventDelayInval "\xd" "n" "\xa" "l"

 #define TEST_BOUNDERx

 #include "SkBounder.h"
 class test_bounder : public SkBounder {
 public:
     test_bounder(const SkBitmap& bm) : fCanvas(bm) {}
 protected:
     virtual bool onIRect(const SkIRect& r)
     {
         SkRect    rr;

         rr.set(SkIntToScalar(r.fLeft), SkIntToScalar(r.fTop),
                 SkIntToScalar(r.fRight), SkIntToScalar(r.fBottom));

         SkPaint    p;

         p.setStyle(SkPaint::kStroke_Style);
         p.setColor(SK_ColorYELLOW);

 #if 0
         rr.inset(SK_ScalarHalf, SK_ScalarHalf);
 #else
         rr.inset(-SK_ScalarHalf, -SK_ScalarHalf);
 #endif

         fCanvas.drawRect(rr, p);
         return true;
     }
 private:
     SkCanvas    fCanvas;
 };

 SkWindow::SkWindow() : fFocusView(NULL)
 {
     fClicks.reset();
     fWaitingOnInval = false;

 #ifdef SK_BUILD_FOR_WINCE
     fConfig = SkBitmap::kRGB_565_Config;
 #else
     fConfig = SkBitmap::kARGB_8888_Config;
 #endif

     fMatrix.reset();
 }

 SkWindow::~SkWindow()
 {
     fClicks.deleteAll();
     fMenus.deleteAll();
 }

 SkCanvas* SkWindow::createCanvas() {
     return new SkCanvas(this->getBitmap());
 }

 void SkWindow::setMatrix(const SkMatrix& matrix) {
     if (fMatrix != matrix) {
         fMatrix = matrix;
         this->inval(NULL);
     }
 }

 void SkWindow::preConcat(const SkMatrix& matrix) {
     SkMatrix m;
     m.setConcat(fMatrix, matrix);
     this->setMatrix(m);
 }

 void SkWindow::postConcat(const SkMatrix& matrix) {
     SkMatrix m;
     m.setConcat(matrix, fMatrix);
     this->setMatrix(m);
 }

 void SkWindow::setConfig(SkBitmap::Config config)
 {
     this->resize(fBitmap.width(), fBitmap.height(), config);
 }

 void SkWindow::resize(int width, int height, SkBitmap::Config config)
 {
     if (config == SkBitmap::kNo_Config)
         config = fConfig;

     if (width != fBitmap.width() || height != fBitmap.height() || config != fConfig)
     {
         fConfig = config;
         fBitmap.setConfig(config, width, height);
         fBitmap.allocPixels();
         fBitmap.setIsOpaque(true);

         this->setSize(SkIntToScalar(width), SkIntToScalar(height));
         this->inval(NULL);
     }
 }

 void SkWindow::eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b)
 {
     fBitmap.eraseARGB(a, r, g, b);
 }

 void SkWindow::eraseRGB(U8CPU r, U8CPU g, U8CPU b)
 {
     fBitmap.eraseRGB(r, g, b);
 }

 bool SkWindow::handleInval(const SkRect* localR)
 {
     SkIRect    ir;

     if (localR) {
         SkRect devR;
         SkMatrix inverse;
         if (!fMatrix.invert(&inverse)) {
             return false;
         }
         fMatrix.mapRect(&devR, *localR);
         devR.round(&ir);
     } else {
         ir.set(0, 0,
                SkScalarRound(this->width()),
                SkScalarRound(this->height()));
     }
     fDirtyRgn.op(ir, SkRegion::kUnion_Op);

     this->onHandleInval(ir);
     return true;
 }

 void SkWindow::forceInvalAll() {
     fDirtyRgn.setRect(0, 0,
                       SkScalarCeil(this->width()),
                       SkScalarCeil(this->height()));
 }

 #if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
     #include <windows.h>
     #include <gx.h>
     extern GXDisplayProperties gDisplayProps;
 #endif

 #ifdef SK_SIMULATE_FAILED_MALLOC
 extern bool gEnableControlledThrow;
 #endif

 bool SkWindow::update(SkIRect* updateArea)
 {
     if (!fDirtyRgn.isEmpty())
     {
         SkBitmap bm = this->getBitmap();

 #if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
         char* buffer = (char*)GXBeginDraw();
         SkASSERT(buffer);

         RECT    rect;
         GetWindowRect((HWND)((SkOSWindow*)this)->getHWND(), &rect);
         buffer += rect.top * gDisplayProps.cbyPitch + rect.left * gDisplayProps.cbxPitch;

         bm.setPixels(buffer);
 #endif

         SkAutoTUnref<SkCanvas> canvas(this->createCanvas());

         canvas->clipRegion(fDirtyRgn);
         if (updateArea)
             *updateArea = fDirtyRgn.getBounds();

         SkAutoCanvasRestore acr(canvas, true);
         canvas->concat(fMatrix);

         // empty this now, so we can correctly record any inval calls that
         // might be made during the draw call.
         fDirtyRgn.setEmpty();

 #ifdef TEST_BOUNDER
         test_bounder    b(bm);
         canvas->setBounder(&b);
 #endif
 #ifdef SK_SIMULATE_FAILED_MALLOC
         gEnableControlledThrow = true;
 #endif
 #ifdef SK_BUILD_FOR_WIN32
         //try {
             this->draw(canvas);
         //}
         //catch (...) {
         //}
 #else
         this->draw(canvas);
 #endif
 #ifdef SK_SIMULATE_FAILED_MALLOC
         gEnableControlledThrow = false;
 #endif
 #ifdef TEST_BOUNDER
         canvas->setBounder(NULL);
 #endif

 #if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
         GXEndDraw();
 #endif

         return true;
     }
     return false;
 }

 bool SkWindow::handleChar(SkUnichar uni)
 {
     if (this->onHandleChar(uni))
         return true;

     SkView* focus = this->getFocusView();
     if (focus == NULL)
         focus = this;

     SkEvent evt(SK_EventType_Unichar);
     evt.setFast32(uni);
     return focus->doEvent(evt);
 }

 bool SkWindow::handleKey(SkKey key)
 {
     if (key == kNONE_SkKey)
         return false;

     if (this->onHandleKey(key))
         return true;

     // send an event to the focus-view
     {
         SkView* focus = this->getFocusView();
         if (focus == NULL)
             focus = this;

         SkEvent evt(SK_EventType_Key);
         evt.setFast32(key);
         if (focus->doEvent(evt))
             return true;
     }

     if (key == kUp_SkKey || key == kDown_SkKey)
     {
         if (this->moveFocus(key == kUp_SkKey ? kPrev_FocusDirection : kNext_FocusDirection) == NULL)
             this->onSetFocusView(NULL);
         return true;
     }
     return false;
 }

 bool SkWindow::handleKeyUp(SkKey key)
 {
     if (key == kNONE_SkKey)
         return false;

     if (this->onHandleKeyUp(key))
         return true;

     //send an event to the focus-view
     {
         SkView* focus = this->getFocusView();
         if (focus == NULL)
             focus = this;

         //should this one be the same?
         SkEvent evt(SK_EventType_KeyUp);
         evt.setFast32(key);
         if (focus->doEvent(evt))
             return true;
     }
     return false;
 }

 void SkWindow::addMenu(SkOSMenu* menu) {
     *fMenus.append() = menu;
     this->onAddMenu(menu);
 }

 void SkWindow::setTitle(const char title[]) {
     if (NULL == title) {
         title = "";
     }
     fTitle.set(title);
     this->onSetTitle(title);
 }

 //////////////////////////////////////////////////////////////////////

 bool SkWindow::onEvent(const SkEvent& evt)
 {
     if (evt.isType(SK_EventDelayInval))
     {
         SkRegion::Iterator    iter(fDirtyRgn);

         for (; !iter.done(); iter.next())
             this->onHandleInval(iter.rect());
         fWaitingOnInval = false;
         return true;
     }
     return this->INHERITED::onEvent(evt);
 }

 bool SkWindow::onGetFocusView(SkView** focus) const
 {
     if (focus)
         *focus = fFocusView;
     return true;
 }

 bool SkWindow::onSetFocusView(SkView* focus)
 {
     if (fFocusView != focus)
     {
         if (fFocusView)
             fFocusView->onFocusChange(false);
         fFocusView = focus;
         if (focus)
             focus->onFocusChange(true);
     }
     return true;
 }

 //////////////////////////////////////////////////////////////////////

 void SkWindow::onHandleInval(const SkIRect&)
 {
 }

 bool SkWindow::onHandleChar(SkUnichar)
 {
     return false;
 }

 bool SkWindow::onHandleKey(SkKey key)
 {
     return false;
 }

 bool SkWindow::onHandleKeyUp(SkKey key)
 {
     return false;
 }

 bool SkWindow::handleClick(int x, int y, Click::State state, void *owner,
                            unsigned modifierKeys) {
     return this->onDispatchClick(x, y, state, owner, modifierKeys);
 }

 bool SkWindow::onDispatchClick(int x, int y, Click::State state,
                                void* owner, unsigned modifierKeys) {
     bool handled = false;

     // First, attempt to find an existing click with this owner.
     int index = -1;
     for (int i = 0; i < fClicks.count(); i++) {
         if (owner == fClicks[i]->fOwner) {
             index = i;
             break;
         }
     }

     switch (state) {
         case Click::kDown_State: {
             if (index != -1) {
                 delete fClicks[index];
                 fClicks.remove(index);
             }
             Click* click = this->findClickHandler(SkIntToScalar(x),
                                                   SkIntToScalar(y), modifierKeys);

             if (click) {
                 click->fOwner = owner;
                 *fClicks.append() = click;
                 SkView::DoClickDown(click, x, y, modifierKeys);
                 handled = true;
             }
             break;
         }
         case Click::kMoved_State:
             if (index != -1) {
                 SkView::DoClickMoved(fClicks[index], x, y, modifierKeys);
                 handled = true;
             }
             break;
         case Click::kUp_State:
             if (index != -1) {
                 SkView::DoClickUp(fClicks[index], x, y, modifierKeys);
                 delete fClicks[index];
                 fClicks.remove(index);
                 handled = true;
             }
             break;
         default:
             // Do nothing
             break;
     }
     return handled;
 }

	/*
	* 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 "SkWindow.h"
	#include "SkCanvas.h"
	#include "SkDevice.h"
	#include "SkOSMenu.h"
	#include "SkSystemEventTypes.h"
	#include "SkTime.h"

	#define SK_EventDelayInval "\xd" "n" "\xa" "l"

	#define TEST_BOUNDERx

	#include "SkBounder.h"
	class test_bounder : public SkBounder {
	public:
	test_bounder(const SkBitmap& bm) : fCanvas(bm) {}
	protected:
	virtual bool onIRect(const SkIRect& r)
	{
	SkRect rr;

	rr.set(SkIntToScalar(r.fLeft), SkIntToScalar(r.fTop),
	SkIntToScalar(r.fRight), SkIntToScalar(r.fBottom));

	SkPaint p;

	p.setStyle(SkPaint::kStroke_Style);
	p.setColor(SK_ColorYELLOW);

	#if 0
	rr.inset(SK_ScalarHalf, SK_ScalarHalf);
	#else
	rr.inset(-SK_ScalarHalf, -SK_ScalarHalf);
	#endif

	fCanvas.drawRect(rr, p);
	return true;
	}
	private:
	SkCanvas fCanvas;
	};

	SkWindow::SkWindow() : fFocusView(NULL)
	{
	fClicks.reset();
	fWaitingOnInval = false;

	#ifdef SK_BUILD_FOR_WINCE
	fConfig = SkBitmap::kRGB_565_Config;
	#else
	fConfig = SkBitmap::kARGB_8888_Config;
	#endif

	fMatrix.reset();
	}

	SkWindow::~SkWindow()
	{
	fClicks.deleteAll();
	fMenus.deleteAll();
	}

	SkCanvas* SkWindow::createCanvas() {
	return new SkCanvas(this->getBitmap());
	}

	void SkWindow::setMatrix(const SkMatrix& matrix) {
	if (fMatrix != matrix) {
	fMatrix = matrix;
	this->inval(NULL);
	}
	}

	void SkWindow::preConcat(const SkMatrix& matrix) {
	SkMatrix m;
	m.setConcat(fMatrix, matrix);
	this->setMatrix(m);
	}

	void SkWindow::postConcat(const SkMatrix& matrix) {
	SkMatrix m;
	m.setConcat(matrix, fMatrix);
	this->setMatrix(m);
	}

	void SkWindow::setConfig(SkBitmap::Config config)
	{
	this->resize(fBitmap.width(), fBitmap.height(), config);
	}

	void SkWindow::resize(int width, int height, SkBitmap::Config config)
	{
	if (config == SkBitmap::kNo_Config)
	config = fConfig;

	if (width != fBitmap.width() \|\| height != fBitmap.height() \|\| config != fConfig)
	{
	fConfig = config;
	fBitmap.setConfig(config, width, height);
	fBitmap.allocPixels();
	fBitmap.setIsOpaque(true);

	this->setSize(SkIntToScalar(width), SkIntToScalar(height));
	this->inval(NULL);
	}
	}

	void SkWindow::eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b)
	{
	fBitmap.eraseARGB(a, r, g, b);
	}

	void SkWindow::eraseRGB(U8CPU r, U8CPU g, U8CPU b)
	{
	fBitmap.eraseRGB(r, g, b);
	}

	bool SkWindow::handleInval(const SkRect* localR)
	{
	SkIRect ir;

	if (localR) {
	SkRect devR;
	SkMatrix inverse;
	if (!fMatrix.invert(&inverse)) {
	return false;
	}
	fMatrix.mapRect(&devR, *localR);
	devR.round(&ir);
	} else {
	ir.set(0, 0,
	SkScalarRound(this->width()),
	SkScalarRound(this->height()));
	}
	fDirtyRgn.op(ir, SkRegion::kUnion_Op);

	this->onHandleInval(ir);
	return true;
	}

	void SkWindow::forceInvalAll() {
	fDirtyRgn.setRect(0, 0,
	SkScalarCeil(this->width()),
	SkScalarCeil(this->height()));
	}

	#if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
	#include <windows.h>
	#include <gx.h>
	extern GXDisplayProperties gDisplayProps;
	#endif

	#ifdef SK_SIMULATE_FAILED_MALLOC
	extern bool gEnableControlledThrow;
	#endif

	bool SkWindow::update(SkIRect* updateArea)
	{
	if (!fDirtyRgn.isEmpty())
	{
	SkBitmap bm = this->getBitmap();

	#if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
	char* buffer = (char*)GXBeginDraw();
	SkASSERT(buffer);

	RECT rect;
	GetWindowRect((HWND)((SkOSWindow*)this)->getHWND(), &rect);
	buffer += rect.top * gDisplayProps.cbyPitch + rect.left * gDisplayProps.cbxPitch;

	bm.setPixels(buffer);
	#endif

	SkAutoTUnref<SkCanvas> canvas(this->createCanvas());

	canvas->clipRegion(fDirtyRgn);
	if (updateArea)
	*updateArea = fDirtyRgn.getBounds();

	SkAutoCanvasRestore acr(canvas, true);
	canvas->concat(fMatrix);

	// empty this now, so we can correctly record any inval calls that
	// might be made during the draw call.
	fDirtyRgn.setEmpty();

	#ifdef TEST_BOUNDER
	test_bounder b(bm);
	canvas->setBounder(&b);
	#endif
	#ifdef SK_SIMULATE_FAILED_MALLOC
	gEnableControlledThrow = true;
	#endif
	#ifdef SK_BUILD_FOR_WIN32
	//try {
	this->draw(canvas);
	//}
	//catch (...) {
	//}
	#else
	this->draw(canvas);
	#endif
	#ifdef SK_SIMULATE_FAILED_MALLOC
	gEnableControlledThrow = false;
	#endif
	#ifdef TEST_BOUNDER
	canvas->setBounder(NULL);
	#endif

	#if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
	GXEndDraw();
	#endif

	return true;
	}
	return false;
	}

	bool SkWindow::handleChar(SkUnichar uni)
	{
	if (this->onHandleChar(uni))
	return true;

	SkView* focus = this->getFocusView();
	if (focus == NULL)
	focus = this;

	SkEvent evt(SK_EventType_Unichar);
	evt.setFast32(uni);
	return focus->doEvent(evt);
	}

	bool SkWindow::handleKey(SkKey key)
	{
	if (key == kNONE_SkKey)
	return false;

	if (this->onHandleKey(key))
	return true;

	// send an event to the focus-view
	{
	SkView* focus = this->getFocusView();
	if (focus == NULL)
	focus = this;

	SkEvent evt(SK_EventType_Key);
	evt.setFast32(key);
	if (focus->doEvent(evt))
	return true;
	}

	if (key == kUp_SkKey \|\| key == kDown_SkKey)
	{
	if (this->moveFocus(key == kUp_SkKey ? kPrev_FocusDirection : kNext_FocusDirection) == NULL)
	this->onSetFocusView(NULL);
	return true;
	}
	return false;
	}

	bool SkWindow::handleKeyUp(SkKey key)
	{
	if (key == kNONE_SkKey)
	return false;

	if (this->onHandleKeyUp(key))
	return true;

	//send an event to the focus-view
	{
	SkView* focus = this->getFocusView();
	if (focus == NULL)
	focus = this;

	//should this one be the same?
	SkEvent evt(SK_EventType_KeyUp);
	evt.setFast32(key);
	if (focus->doEvent(evt))
	return true;
	}
	return false;
	}

	void SkWindow::addMenu(SkOSMenu* menu) {
	*fMenus.append() = menu;
	this->onAddMenu(menu);
	}

	void SkWindow::setTitle(const char title[]) {
	if (NULL == title) {
	title = "";
	}
	fTitle.set(title);
	this->onSetTitle(title);
	}

	//////////////////////////////////////////////////////////////////////

	bool SkWindow::onEvent(const SkEvent& evt)
	{
	if (evt.isType(SK_EventDelayInval))
	{
	SkRegion::Iterator iter(fDirtyRgn);

	for (; !iter.done(); iter.next())
	this->onHandleInval(iter.rect());
	fWaitingOnInval = false;
	return true;
	}
	return this->INHERITED::onEvent(evt);
	}

	bool SkWindow::onGetFocusView(SkView** focus) const
	{
	if (focus)
	*focus = fFocusView;
	return true;
	}

	bool SkWindow::onSetFocusView(SkView* focus)
	{
	if (fFocusView != focus)
	{
	if (fFocusView)
	fFocusView->onFocusChange(false);
	fFocusView = focus;
	if (focus)
	focus->onFocusChange(true);
	}
	return true;
	}

	//////////////////////////////////////////////////////////////////////

	void SkWindow::onHandleInval(const SkIRect&)
	{
	}

	bool SkWindow::onHandleChar(SkUnichar)
	{
	return false;
	}

	bool SkWindow::onHandleKey(SkKey key)
	{
	return false;
	}

	bool SkWindow::onHandleKeyUp(SkKey key)
	{
	return false;
	}

	bool SkWindow::handleClick(int x, int y, Click::State state, void *owner,
	unsigned modifierKeys) {
	return this->onDispatchClick(x, y, state, owner, modifierKeys);
	}

	bool SkWindow::onDispatchClick(int x, int y, Click::State state,
	void* owner, unsigned modifierKeys) {
	bool handled = false;

	// First, attempt to find an existing click with this owner.
	int index = -1;
	for (int i = 0; i < fClicks.count(); i++) {
	if (owner == fClicks[i]->fOwner) {
	index = i;
	break;
	}
	}

	switch (state) {
	case Click::kDown_State: {
	if (index != -1) {
	delete fClicks[index];
	fClicks.remove(index);
	}
	Click* click = this->findClickHandler(SkIntToScalar(x),
	SkIntToScalar(y), modifierKeys);

	if (click) {
	click->fOwner = owner;
	*fClicks.append() = click;
	SkView::DoClickDown(click, x, y, modifierKeys);
	handled = true;
	}
	break;
	}
	case Click::kMoved_State:
	if (index != -1) {
	SkView::DoClickMoved(fClicks[index], x, y, modifierKeys);
	handled = true;
	}
	break;
	case Click::kUp_State:
	if (index != -1) {
	SkView::DoClickUp(fClicks[index], x, y, modifierKeys);
	delete fClicks[index];
	fClicks.remove(index);
	handled = true;
	}
	break;
	default:
	// Do nothing
	break;
	}
	return handled;
	}