void Gui::handleMouseInput()
{
while (!mInput->isMouseQueueEmpty())
{
MouseInput mouseInput = mInput->dequeueMouseInput();
// Save the current mouse state. It will be needed if modal focus
// changes or modal mouse input focus changes.
mLastMouseX = mouseInput.getX();
mLastMouseY = mouseInput.getY();
switch (mouseInput.getType())
{
case MouseInput::PRESSED:
handleMousePressed(mouseInput);
break;
case MouseInput::RELEASED:
handleMouseReleased(mouseInput);
break;
case MouseInput::MOVED:
handleMouseMoved(mouseInput);
break;
case MouseInput::WHEEL_MOVED_DOWN:
handleMouseWheelMovedDown(mouseInput);
break;
case MouseInput::WHEEL_MOVED_UP:
handleMouseWheelMovedUp(mouseInput);
break;
default:
throw GCN_EXCEPTION("Unknown mouse input type.");
break;
}
}
}
void Gui::handleMouseReleased(const MouseInput& mouseInput)
{
WidgetPtr sourceWidget = GetMouseEventSource(mouseInput.getX(), mouseInput.getY());
if (mFocusHandler->GetDraggedWidget())
{
if (sourceWidget != mFocusHandler->GetLastWidgetPressed())
{
mFocusHandler->SetLastWidgetPressed(WidgetPtr());
}
sourceWidget = mFocusHandler->GetDraggedWidget();
}
int sourceWidgetX, sourceWidgetY;
sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
distributeMouseEvent(sourceWidget,
MouseEvent::RELEASED,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY());
if (mouseInput.getButton() == mLastMousePressButton
&& mFocusHandler->GetLastWidgetPressed() == sourceWidget)
{
distributeMouseEvent(sourceWidget,
MouseEvent::CLICKED,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY());
mFocusHandler->SetLastWidgetPressed(WidgetPtr());
}
else
{
mLastMousePressButton = 0;
mClickCount = 0;
}
if (mFocusHandler->GetDraggedWidget())
{
mFocusHandler->SetDraggedWidget(WidgetPtr());
}
}
void Gui::handleMouseWheelMovedUp(const MouseInput& mouseInput)
{
WidgetPtr sourceWidget = GetMouseEventSource(mouseInput.getX(), mouseInput.getY());
if (mFocusHandler->GetDraggedWidget() != NULL)
{
sourceWidget = mFocusHandler->GetDraggedWidget();
}
int sourceWidgetX, sourceWidgetY;
sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
distributeMouseEvent(sourceWidget,
MouseEvent::WHEEL_MOVED_UP,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY());
}
void Gui::handleMousePressed(const MouseInput& mouseInput)
{
WidgetPtr sourceWidget = GetMouseEventSource(mouseInput.getX(), mouseInput.getY());
if (mFocusHandler->GetDraggedWidget())
{
sourceWidget = mFocusHandler->GetDraggedWidget();
}
int sourceWidgetX, sourceWidgetY;
sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
if ((mFocusHandler->GetModalFocused() != NULL
&& sourceWidget->isModalFocused())
|| mFocusHandler->GetModalFocused() == NULL)
{
sourceWidget->requestFocus();
}
if (mouseInput.getTimeStamp() - mLastMousePressTimeStamp < 250
&& mLastMousePressButton == mouseInput.getButton())
{
mClickCount++;
}
else
{
mClickCount = 1;
}
distributeMouseEvent(sourceWidget,
MouseEvent::PRESSED,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY());
mFocusHandler->SetLastWidgetPressed(sourceWidget);
mFocusHandler->SetDraggedWidget(sourceWidget);
mLastMouseDragButton = mouseInput.getButton();
mLastMousePressButton = mouseInput.getButton();
mLastMousePressTimeStamp = mouseInput.getTimeStamp();
}
void Gui::handleMouseMoved(const MouseInput& mouseInput)
{
// Check if the mouse leaves the application window.
if (!mWidgetWithMouseQueue.empty()
&& (mouseInput.getX() < 0
|| mouseInput.getY() < 0
|| !mTop->GetDimension().isPointInRect(mouseInput.getX(), mouseInput.getY()))
)
{
// Distribute an event to all widgets in the "widget with mouse" queue.
while (!mWidgetWithMouseQueue.empty())
{
WidgetPtr widget = mWidgetWithMouseQueue.front();
if (Widget::widgetExists(widget))
{
distributeMouseEvent(widget,
MouseEvent::EXITED,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY(),
true,
true);
}
mWidgetWithMouseQueue.pop_front();
}
return;
}
// Check if there is a need to send mouse exited events by
// traversing the "widget with mouse" queue.
bool widgetWithMouseQueueCheckDone = mWidgetWithMouseQueue.empty();
while (!widgetWithMouseQueueCheckDone)
{
unsigned int iterations = 0;
std::deque<WidgetPtr>::iterator iter;
for (iter = mWidgetWithMouseQueue.begin();
iter != mWidgetWithMouseQueue.end();
iter++)
{
WidgetPtr widget = *iter;
// If a widget in the "widget with mouse queue" doesn't
// exists anymore it should be removed from the queue.
if (!Widget::widgetExists(widget))
{
mWidgetWithMouseQueue.erase(iter);
break;
}
else
{
int x, y;
widget->getAbsolutePosition(x, y);
if (x > mouseInput.getX()
|| y > mouseInput.getY()
|| x + widget->GetWidth() <= mouseInput.getX()
|| y + widget->GetHeight() <= mouseInput.getY()
|| !widget->IsVisible())
{
distributeMouseEvent(widget,
MouseEvent::EXITED,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY(),
true,
true);
mClickCount = 1;
mLastMousePressTimeStamp = 0;
mWidgetWithMouseQueue.erase(iter);
break;
}
}
iterations++;
}
widgetWithMouseQueueCheckDone = iterations == mWidgetWithMouseQueue.size();
}
// Check all widgets below the mouse to see if they are
// present in the "widget with mouse" queue. If a widget
// is not then it should be added and an entered event should
// be sent to it.
WidgetPtr parent = GetMouseEventSource(mouseInput.getX(), mouseInput.getY());
WidgetPtr widget = parent;
// If a widget has modal mouse input focus then it will
// always be returned from getMouseEventSource, but we only wan't to send
// mouse entered events if the mouse has actually entered the widget with
// modal mouse input focus, hence we need to check if that's the case. If
// it's not we should simply ignore to send any mouse entered events.
if (mFocusHandler->GetModalMouseInputFocused()
&& widget == mFocusHandler->GetModalMouseInputFocused()
&& Widget::widgetExists(widget))
{
int x, y;
widget->getAbsolutePosition(x, y);
if (x > mouseInput.getX()
|| y > mouseInput.getY()
|| x + widget->GetWidth() <= mouseInput.getX()
|| y + widget->GetHeight() <= mouseInput.getY())
{
parent.reset();
}
}
while (parent)
{
parent = widget->GetParent();
// Check if the widget is present in the "widget with mouse" queue.
bool widgetIsPresentInQueue = false;
std::deque<WidgetPtr>::iterator iter;
for (iter = mWidgetWithMouseQueue.begin();
iter != mWidgetWithMouseQueue.end();
iter++)
{
if (*iter == widget)
{
widgetIsPresentInQueue = true;
break;
}
}
// Widget is not present, send an entered event and add
// it to the "widget with mouse" queue.
if (!widgetIsPresentInQueue
&& Widget::widgetExists(widget))
{
distributeMouseEvent(widget,
MouseEvent::ENTERED,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY(),
true,
true);
mWidgetWithMouseQueue.push_front(widget);
}
WidgetPtr swap = widget;
widget = parent;
parent = (WidgetPtr)swap->GetParent();
}
if (mFocusHandler->GetDraggedWidget())
{
distributeMouseEvent(mFocusHandler->GetDraggedWidget(),
MouseEvent::DRAGGED,
mLastMouseDragButton,
mouseInput.getX(),
mouseInput.getY());
}
else
{
WidgetPtr sourceWidget = GetMouseEventSource(mouseInput.getX(), mouseInput.getY());
distributeMouseEvent(sourceWidget,
MouseEvent::MOVED,
mouseInput.getButton(),
mouseInput.getX(),
mouseInput.getY());
}
}
