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/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
This program 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.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MODALMENU_HEADER
#define MODALMENU_HEADER
#include "common_irrlicht.h"
/*
Remember to drop() the menu after creating, so that it can
remove itself when it wants to.
*/
class GUIModalMenu : public gui::IGUIElement
{
public:
GUIModalMenu(gui::IGUIEnvironment* env,
gui::IGUIElement* parent, s32 id,
int *active_menu_count):
IGUIElement(gui::EGUIET_ELEMENT, env, parent, id,
core::rect<s32>(0,0,100,100))
{
m_active_menu_count = active_menu_count;
m_allow_focus_removal = false;
m_screensize_old = v2u32(0,0);
setVisible(true);
Environment->setFocus(this);
(*m_active_menu_count)++;
}
virtual ~GUIModalMenu()
{
(*m_active_menu_count)--;
}
bool canTakeFocus(gui::IGUIElement *e)
{
return (e && (e == this || isMyChild(e))) || m_allow_focus_removal;
}
void draw()
{
if(!IsVisible)
return;
video::IVideoDriver* driver = Environment->getVideoDriver();
v2u32 screensize = driver->getScreenSize();
if(screensize != m_screensize_old)
{
m_screensize_old = screensize;
regenerateGui(screensize);
}
drawMenu();
}
/*
This should be called when the menu wants to quit
*/
void quitMenu()
{
m_allow_focus_removal = true;
// This removes Environment's grab on us
Environment->removeFocus(this);
this->remove();
}
virtual void regenerateGui(v2u32 screensize) = 0;
virtual void drawMenu() = 0;
virtual bool OnEvent(const SEvent& event) { return false; };
private:
int *m_active_menu_count;
// This might be necessary to expose to the implementation if it
// wants to launch other menus
bool m_allow_focus_removal;
v2u32 m_screensize_old;
};
#endif
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