C++ ToolHandler类代码示例

bool PageView::onMotionNotifyEvent(GtkWidget * widget, GdkEventMotion * event) {
	XOJ_CHECK_TYPE(PageView);

	double zoom = xournal->getZoom();
	double x = event->x / zoom;
	double y = event->y / zoom;

	ToolHandler * h = xournal->getControl()->getToolHandler();

	if (this->inputHandler->onMotionNotifyEvent(event)) {
		//input	handler used this event
	} else if (this->selection) {
		this->selection->currentPos(x, y);
	} else if (this->verticalSpace) {
		this->verticalSpace->currentPos(x, y);
	} else if (this->textEditor) {
		Cursor * cursor = getXournal()->getCursor();
		cursor->setInvisible(false);

		Text * text = this->textEditor->getText();
		this->textEditor->mouseMoved(x - text->getX(), y - text->getY());
	} else if (h->getToolType() == TOOL_ERASER && h->getEraserType() != ERASER_TYPE_WHITEOUT && this->inEraser) {
		this->eraser->erase(x, y);
	}

	return false;
}

/**
 * Mouse / Pen up / touch end
 */
void InputSequence::actionEnd(guint32 time)
{
	XOJ_CHECK_TYPE(InputSequence);

	if (!inputRunning)
	{
		return;
	}

	this->eventTime = time;

	// Mouse button not pressed anymore
	this->button = 0;

	current_view = NULL;

	GtkXournal* xournal = inputHandler->getXournal();
	XournalppCursor* cursor = xournal->view->getCursor();
	ToolHandler* h = inputHandler->getToolHandler();

	if (xournal->view->getControl()->getWindow()->isGestureActive())
	{
		stopInput();
		return;
	}

	cursor->setMouseDown(false);

	inScrolling = false;

	EditSelection* sel = xournal->view->getSelection();
	if (sel)
	{
		sel->mouseUp();
	}

	if (currentInputPage)
	{
		PositionInputData pos = getInputDataRelativeToCurrentPage(currentInputPage);
		currentInputPage->onButtonReleaseEvent(pos);
		currentInputPage = NULL;
	}

	EditSelection* tmpSelection = xournal->selection;
	xournal->selection = NULL;

	h->restoreLastConfig();

	// we need this workaround so it's possible to select something with the middle button
	if (tmpSelection)
	{
		xournal->view->setSelection(tmpSelection);
	}

	stopInput();
}

gboolean gtk_xournal_button_release_event(GtkWidget* widget,
                                          GdkEventButton* event)
{
#ifdef INPUT_DEBUG
	gboolean isCore = (event->device == gdk_device_get_core_pointer());
	INPUTDBG("ButtonRelease (%s) (x,y)=(%.2f,%.2f), button %d, modifier %x, isCore %i",
	         gdk_device_get_name(event->device), event->x, event->y,
	         event->button, event->state, isCore);
#endif
	XInputUtils::fixXInputCoords((GdkEvent*) event, widget);

	if (event->button > 3)   // scroll wheel events
	{
		return true;
	}

	current_view = NULL;

	GtkXournal* xournal = GTK_XOURNAL(widget);

	Cursor* cursor = xournal->view->getCursor();
	ToolHandler* h = xournal->view->getControl()->getToolHandler();
	cursor->setMouseDown(false);

	xournal->inScrolling = false;

	EditSelection* sel = xournal->view->getSelection();
	if (sel)
	{
		sel->mouseUp();
	}

	bool res = false;
	if (xournal->currentInputPage)
	{
		xournal->currentInputPage->translateEvent((GdkEvent*) event, xournal->x,
		                                          xournal->y);
		res = xournal->currentInputPage->onButtonReleaseEvent(widget, event);
		xournal->currentInputPage = NULL;
	}

	EditSelection* tmpSelection = xournal->selection;
	xournal->selection = NULL;

	h->restoreLastConfig();

	// we need this workaround so it's possible to select something with the middle button
	if (tmpSelection)
	{
		xournal->view->setSelection(tmpSelection);
	}

	return res;
}

void InputHandler::addPointToTmpStroke(GdkEventMotion * event) {
	XOJ_CHECK_TYPE(InputHandler);

	double zoom = xournal->getZoom();
	double x = event->x / zoom;
	double y = event->y / zoom;
	bool presureSensitivity = xournal->getControl()->getSettings()->isPresureSensitivity();

	if (tmpStroke->getPointCount() > 0) {
		Point p = tmpStroke->getPoint(tmpStroke->getPointCount() - 1);

		if (hypot(p.x - x, p.y - y) < PIXEL_MOTION_THRESHOLD) {
			return; // not a meaningful motion
		}
	}

	ToolHandler * h = xournal->getControl()->getToolHandler();

	if (h->isRuler()) {
		int count = tmpStroke->getPointCount();
		if (count < 2) {
			tmpStroke->addPoint(Point(x, y));
		} else {
			tmpStroke->setLastPoint(x, y);
		}
		Point p = tmpStroke->getPoint(0);

		//Draw the initial stroke or else rerender it
		//The rerenderelement is bugged up on Debian Squeeze
		//Until this is fixed just repaint.
		this->redrawable->rerenderElement(this->tmpStroke);
		this->redrawable->repaintElement(this->tmpStroke);
		return;
	}

	if (presureSensitivity) {
		double pressure = Point::NO_PRESURE;
		if (h->getToolType() == TOOL_PEN) {
			if (getPressureMultiplier((GdkEvent *) event, pressure)) {
				pressure = pressure * tmpStroke->getWidth();
			} else {
				pressure = Point::NO_PRESURE;
			}
		}

		tmpStroke->setLastPressure(pressure);
	}
	tmpStroke->addPoint(Point(x, y));

	drawTmpStroke();
}

gboolean gtk_xournal_motion_notify_event(GtkWidget * widget, GdkEventMotion * event) {
#ifdef INPUT_DEBUG
		bool is_core = (event->device == gdk_device_get_core_pointer());
		INPUTDBG("MotionNotify (%s) (x,y)=(%.2f,%.2f), modifier %x", is_core ? "core" : "xinput", event->x, event->y, event->state);
#endif

	XInputUtils::fixXInputCoords((GdkEvent*) event, widget);

	GtkXournal * xournal = GTK_XOURNAL(widget);
	ToolHandler * h = xournal->view->getControl()->getToolHandler();

	if (h->getToolType() == TOOL_HAND) {
		if (xournal->inScrolling) {
			gtk_xournal_scroll_mouse_event(xournal, event);
			return true;
		}
		return false;
	} else if (xournal->selection) {
		EditSelection * selection = xournal->selection;

		PageView * view = selection->getView();
		GdkEventMotion ev = *event;
		view->translateEvent((GdkEvent*) &ev, xournal->x, xournal->y);

		if (xournal->selection->isMoving()) {
			selection->mouseMove(ev.x, ev.y);
		} else {
			CursorSelectionType selType = selection->getSelectionTypeForPos(ev.x, ev.y, xournal->view->getZoom());
			xournal->view->getCursor()->setMouseSelectionType(selType);
		}
		return true;
	}

	PageView * pv = gtk_xournal_get_page_view_for_pos_cached(xournal, event->x, event->y);
	xournal->view->getCursor()->setInsidePage(pv != NULL);
	if (pv) {
		// allow events only to a single page!
		if (xournal->currentInputPage == NULL || pv == xournal->currentInputPage) {
			pv->translateEvent((GdkEvent*) event, xournal->x, xournal->y);
			return pv->onMotionNotifyEvent(widget, event);;
		}
	}

	return false;
}

static bool change_tool(Settings* settings, GdkEventButton* event,
                        GtkXournal* xournal)
{
	ButtonConfig* cfg = NULL;
	ButtonConfig* cfgTouch = settings->getTouchButtonConfig();
	ToolHandler* h = xournal->view->getControl()->getToolHandler();

	if (event->button == 2)   // Middle Button
	{
		cfg = settings->getMiddleButtonConfig();
	}
	else if (event->button == 3 && !xournal->selection)     // Right Button
	{
		cfg = settings->getRightButtonConfig();
	}
	else if (event->device->source == GDK_SOURCE_ERASER)
	{
		cfg = settings->getEraserButtonConfig();
	}
	else if (cfgTouch->device == event->device->name)
	{
		cfg = cfgTouch;

		// If an action is defined we do it, even if it's a drawing action...
		if (cfg->getDisableDrawing() && cfg->getAction() == TOOL_NONE)
		{
			ToolType tool = h->getToolType();
			if (tool == TOOL_PEN || tool == TOOL_ERASER || tool == TOOL_HILIGHTER)
			{
				printf("ignore touchscreen for drawing!\n");
				return true;
			}
		}
	}

	if (cfg && cfg->getAction() != TOOL_NONE)
	{
		h->copyCurrentConfig();
		cfg->acceptActions(h);
	}

	return false;
}

void Cursor::setMouseDown(bool mouseDown)
{
	XOJ_CHECK_TYPE(Cursor);

	if (this->mouseDown == mouseDown)
	{
		return;
	}

	this->mouseDown = mouseDown;
	ToolHandler* handler = control->getToolHandler();
	ToolType type = handler->getToolType();

	// Not always an update is needed
	if (type == TOOL_HAND || type == TOOL_VERTICAL_SPACE)
	{
		updateCursor();
	}
}

gboolean gtk_xournal_button_press_event(GtkWidget* widget,
                                        GdkEventButton* event)
{
	/**
	 * true: Core event, false: XInput event
	 */
	gboolean isCore = (event->device == gdk_device_get_core_pointer());

	INPUTDBG("ButtonPress (%s) (x,y)=(%.2f,%.2f), button %d, modifier %x, isCore %i",
	         gdk_device_get_name(event->device), event->x, event->y,
	         event->button, event->state, isCore);

	GtkXournal* xournal = GTK_XOURNAL(widget);
	Settings* settings = xournal->view->getControl()->getSettings();

	if(isCore && settings->isXinputEnabled() && settings->isIgnoreCoreEvents())
	{
		INPUTDBG2("gtk_xournal_button_press_event return false (ignore core)");
		return false;
	}

	XInputUtils::fixXInputCoords((GdkEvent*) event, widget);

	if (event->type != GDK_BUTTON_PRESS)
	{
		INPUTDBG2("gtk_xournal_button_press_event return false (event->type != GDK_BUTTON_PRESS)");
		return false; // this event is not handled here
	}

	if (event->button > 3)   // scroll wheel events
	{
		XInputUtils::handleScrollEvent(event, widget);
		INPUTDBG2("gtk_xournal_button_press_event return true handled scroll event");
		return true;
	}

	gtk_widget_grab_focus(widget);

	// none button release event was sent, send one now
	if (xournal->currentInputPage)
	{
		INPUTDBG2("gtk_xournal_button_press_event (xournal->currentInputPage != NULL)");

		GdkEventButton ev = *event;
		xournal->currentInputPage->translateEvent((GdkEvent*) &ev, xournal->x,
		                                          xournal->y);
		xournal->currentInputPage->onButtonReleaseEvent(widget, &ev);
	}

	ToolHandler* h = xournal->view->getControl()->getToolHandler();

	// Change the tool depending on the key or device
	if(change_tool(settings, event, xournal))
		return true;

	// hand tool don't change the selection, so you can scroll e.g.
	// with your touchscreen without remove the selection
	if (h->getToolType() == TOOL_HAND)
	{
		Cursor* cursor = xournal->view->getCursor();
		cursor->setMouseDown(true);
		xournal->lastMousePositionX = 0;
		xournal->lastMousePositionY = 0;
		xournal->inScrolling = true;
		gtk_widget_get_pointer(widget, &xournal->lastMousePositionX,
		                       &xournal->lastMousePositionY);

		INPUTDBG2("gtk_xournal_button_press_event (h->getToolType() == TOOL_HAND) return true");
		return true;
	}
	else if (xournal->selection)
	{
		EditSelection* selection = xournal->selection;

		PageView* view = selection->getView();
		GdkEventButton ev = *event;
		view->translateEvent((GdkEvent*) &ev, xournal->x, xournal->y);
		CursorSelectionType selType = selection->getSelectionTypeForPos(ev.x, ev.y,
		                                                                xournal->view->getZoom());
		if (selType)
		{

			if(selType == CURSOR_SELECTION_MOVE && event->button == 3)
			{
				selection->copySelection();
			}

			xournal->view->getCursor()->setMouseDown(true);
			xournal->selection->mouseDown(selType, ev.x, ev.y);
			INPUTDBG2("gtk_xournal_button_press_event (selection) return true");
			return true;
		}
		else
		{
			xournal->view->clearSelection();
			if(change_tool(settings, event, xournal))
				return true;
		}
	}

//.........这里部分代码省略.........

gboolean gtk_xournal_button_press_event(GtkWidget * widget, GdkEventButton * event) {
	/**
	 * true: Core event, false: XInput event
	 */
	gboolean isCore = (event->device == gdk_device_get_core_pointer());

	INPUTDBG("ButtonPress (%s) (x,y)=(%.2f,%.2f), button %d, modifier %x, isCore %i", gdk_device_get_name(event->device), event->x, event->y,
			event->button, event->state, isCore);

	GtkXournal * xournal = GTK_XOURNAL(widget);
	Settings * settings = xournal->view->getControl()->getSettings();

	if(isCore && settings->isXinputEnabled() && settings->isIgnoreCoreEvents()) {
		INPUTDBG2("gtk_xournal_button_press_event return false (ignore core)");
		return false;
	}

	XInputUtils::fixXInputCoords((GdkEvent*) event, widget);

	if (event->type != GDK_BUTTON_PRESS) {
		INPUTDBG2("gtk_xournal_button_press_event return false (event->type != GDK_BUTTON_PRESS)");
		return false; // this event is not handled here
	}

	if (event->button > 3) { // scroll wheel events
		XInputUtils::handleScrollEvent(event, widget);
		INPUTDBG2("gtk_xournal_button_press_event return true handled scroll event");
		return true;
	}

	gtk_widget_grab_focus(widget);

	ToolHandler * h = xournal->view->getControl()->getToolHandler();

	// none button release event was sent, send one now
	if (xournal->currentInputPage) {
		INPUTDBG2("gtk_xournal_button_press_event (xournal->currentInputPage != NULL)");

		GdkEventButton ev = *event;
		xournal->currentInputPage->translateEvent((GdkEvent*) &ev, xournal->x, xournal->y);
		xournal->currentInputPage->onButtonReleaseEvent(widget, &ev);
	}

	// Change the tool depending on the key or device
	ButtonConfig * cfg = NULL;
	ButtonConfig * cfgTouch = settings->getTouchButtonConfig();
	if (event->button == 2) { // Middle Button
		cfg = settings->getMiddleButtonConfig();
	} else if (event->button == 3) { // Right Button
		cfg = settings->getRightButtonConfig();
	} else if (event->device->source == GDK_SOURCE_ERASER) {
		cfg = settings->getEraserButtonConfig();
	} else if (cfgTouch->device == event->device->name) {
		cfg = cfgTouch;

		// If an action is defined we do it, even if it's a drawing action...
		if (cfg->getDisableDrawing() && cfg->getAction() == TOOL_NONE) {
			ToolType tool = h->getToolType();
			if (tool == TOOL_PEN || tool == TOOL_ERASER || tool == TOOL_HILIGHTER) {
				printf("ignore touchscreen for drawing!\n");
				return true;
			}
		}
	}

	if (cfg && cfg->getAction() != TOOL_NONE) {
		h->copyCurrentConfig();
		cfg->acceptActions(h);
	}

	// hand tool don't change the selection, so you can scroll e.g.
	// with your touchscreen without remove the selection
	if (h->getToolType() == TOOL_HAND) {
		Cursor * cursor = xournal->view->getCursor();
		cursor->setMouseDown(true);
		xournal->lastMousePositionX = 0;
		xournal->lastMousePositionY = 0;
		xournal->inScrolling = true;
		gtk_widget_get_pointer(widget, &xournal->lastMousePositionX, &xournal->lastMousePositionY);

		INPUTDBG2("gtk_xournal_button_press_event (h->getToolType() == TOOL_HAND) return true");
		return true;
	} else if (xournal->selection) {
		EditSelection * selection = xournal->selection;

		PageView * view = selection->getView();
		GdkEventButton ev = *event;
		view->translateEvent((GdkEvent*) &ev, xournal->x, xournal->y);
		CursorSelectionType selType = selection->getSelectionTypeForPos(ev.x, ev.y, xournal->view->getZoom());
		if (selType) {
			xournal->view->getCursor()->setMouseDown(true);
			xournal->selection->mouseDown(selType, ev.x, ev.y);
			INPUTDBG2("gtk_xournal_button_press_event (selection) return true");
			return true;
		} else {
			xournal->view->clearSelection();
		}
	}

	PageView * pv = gtk_xournal_get_page_view_for_pos_cached(xournal, event->x, event->y);
//.........这里部分代码省略.........

void PageView::startText(double x, double y)
{
	XOJ_CHECK_TYPE(PageView);

	this->xournal->endTextAllPages(this);

	if (this->textEditor == NULL)
	{
		// Is there already a textfield?
		ListIterator<Element*> eit = this->page->getSelectedLayer()->elementIterator();

		Text* text = NULL;

		while (eit.hasNext())
		{
			Element* e = eit.next();

			if (e->getType() == ELEMENT_TEXT)
			{
				GdkRectangle matchRect = { gint(x - 10), gint(y - 10), 20, 20 };
				if (e->intersectsArea(&matchRect))
				{
					text = (Text*) e;
					break;
				}
			}
		}

		bool ownText = false;
		if (text == NULL)
		{
			ToolHandler* h = xournal->getControl()->getToolHandler();
			ownText = true;
			text = new Text();
			text->setX(x);
			text->setY(y);
			text->setColor(h->getColor());
			text->setFont(settings->getFont());
		}
		else
		{

			//We can try to add an undo action here. The initial text shows up in this
			//textEditor element.
			this->oldtext = text;
			//text = new Text(*oldtext);
			//need to clone the old text so that references still work properly.
			//cloning breaks things a little. do it manually
			text = new Text();
			text->setX(oldtext->getX());
			text->setY(oldtext->getY());
			text->setColor(oldtext->getColor());
			text->setFont(oldtext->getFont());
			text->setText(oldtext->getText());

			Layer* layer = this->page->getSelectedLayer();
			layer->removeElement(this->oldtext, false);
			layer->addElement(text);
			//perform the old swap onto the new text drawn.
		}

		this->textEditor = new TextEditor(this, xournal->getWidget(), text, ownText);
		if (!ownText)
		{
			this->textEditor->mousePressed(x - text->getX(), y - text->getY());
		}

		this->rerenderPage();
	}
	else
	{
		Text* text = this->textEditor->getText();
		GdkRectangle matchRect = {gint(x - 10), gint(y - 10), 20, 20 };
		if (!text->intersectsArea(&matchRect))
		{
			endText();
		}
		else
		{
			this->textEditor->mousePressed(x - text->getX(), y - text->getY());
		}
	}
}