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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* eventhandler.cc
*
* Sun Oct 9 18:58:29 CEST 2011
* Copyright 2011 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* DrumGizmo is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "eventhandler.h"
#include "window.h"
#include "painter.h"
namespace GUI {
EventHandler::EventHandler(NativeWindow& nativeWindow, Window& window)
: window(window)
, nativeWindow(nativeWindow)
// , last_click(0)
, lastWasDoubleClick(false)
{}
bool EventHandler::hasEvent()
{
return nativeWindow.hasEvent();
}
Event *EventHandler::getNextEvent()
{
return nativeWindow.getNextEvent();
}
void EventHandler::processEvents()
{
while(hasEvent())
{
Painter p(window); // Make sure we only redraw buffer one time.
auto event = getNextEvent();
if(event == nullptr)
{
continue;
}
switch(event->type()) {
case EventType::repaint:
window.redraw();
break;
case EventType::resize:
{
auto resizeEvent = static_cast<ResizeEvent*>(event);
if((resizeEvent->width != window.width()) ||
(resizeEvent->height != window.height()))
{
window.resized(resizeEvent->width, resizeEvent->height);
}
}
break;
case EventType::mouseMove:
{
auto moveEvent = static_cast<MouseMoveEvent*>(event);
auto widget = window.find(moveEvent->x, moveEvent->y);
auto oldwidget = window.mouseFocus();
if(widget != oldwidget)
{
// Send focus leave to oldwidget
if(oldwidget)
{
oldwidget->mouseLeaveEvent();
}
// Send focus enter to widget
if(widget)
{
widget->mouseEnterEvent();
}
window.setMouseFocus(widget);
}
if(window.buttonDownFocus())
{
auto widget = window.buttonDownFocus();
moveEvent->x -= widget->windowX();
moveEvent->y -= widget->windowY();
window.buttonDownFocus()->mouseMoveEvent(moveEvent);
break;
}
if(widget)
{
moveEvent->x -= widget->windowX();
moveEvent->y -= widget->windowY();
widget->mouseMoveEvent(moveEvent);
}
}
break;
case EventType::button:
{
if(lastWasDoubleClick)
{
lastWasDoubleClick = false;
continue;
}
auto buttonEvent = static_cast<ButtonEvent*>(event);
lastWasDoubleClick = buttonEvent->doubleClick;
auto widget = window.find(buttonEvent->x, buttonEvent->y);
if(window.buttonDownFocus())
{
if(buttonEvent->direction == Direction::up)
{
auto widget = window.buttonDownFocus();
buttonEvent->x -= widget->windowX();
buttonEvent->y -= widget->windowY();
widget->buttonEvent(buttonEvent);
break;
}
else // Event::Button::Down
{
window.setButtonDownFocus(nullptr);
}
}
if(widget)
{
buttonEvent->x -= widget->windowX();
buttonEvent->y -= widget->windowY();
widget->buttonEvent(buttonEvent);
if((buttonEvent->direction == Direction::down) &&
widget->catchMouse())
{
window.setButtonDownFocus(widget);
}
if(widget->isFocusable())
{
window.setKeyboardFocus(widget);
}
}
}
break;
case EventType::scroll:
{
auto scrollEvent = static_cast<ScrollEvent*>(event);
auto widget = window.find(scrollEvent->x, scrollEvent->y);
if(widget)
{
scrollEvent->x -= widget->windowX();
scrollEvent->y -= widget->windowY();
widget->scrollEvent(scrollEvent);
}
}
break;
case EventType::key:
{
auto keyEvent = static_cast<KeyEvent*>(event);
if(window.keyboardFocus())
{
window.keyboardFocus()->keyEvent(keyEvent);
}
}
break;
case EventType::close:
closeNotifier();
break;
}
delete event;
}
}
} // GUI::
|
