pausemenu stuff

src/guiPauseMenu.cpp

+/*
+Minetest-c55
+Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Original author Kabak Dmitry <userdima@gmail.com>, contributed under
+the minetest contributor agreement.
+
+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.
+*/
+
+
+#include "guiPauseMenu.h"
+
+void guiPauseMenu::scaleGui() // this function scales gui from the size stored in file to screen size
+{
+	core::dimension2du screen=dev->getVideoDriver()->getScreenSize();
+	core::vector2di real=root->getAbsolutePosition().LowerRightCorner; // determine gui size stored in file (which is size of my menu root node)
+	float factorX=(float)screen.Width/(float)real.X;
+	float factorY=(float)screen.Height/(float)real.Y;
+	scaleGui(guienv->getRootGUIElement(),factorX,factorY);
+}
+void guiPauseMenu::scaleGui(gui::IGUIElement *node,float factorX,float factorY) // recursive set scale
+{
+	if((node->getParent() && node->getParent()->getID()==255) || node->getID()==255) // modify only menu's elements
+	{
+		int lx,rx,ly,ry;
+		lx=(float)node->getRelativePosition().UpperLeftCorner.X*factorX;
+		ly=(float)node->getRelativePosition().UpperLeftCorner.Y*factorY;
+		rx=(float)node->getRelativePosition().LowerRightCorner.X*factorX;
+		ry=(float)node->getRelativePosition().LowerRightCorner.Y*factorY;
+		node->setRelativePosition(core::recti(lx,ly,rx,ry));
+	}
+
+	core::list<gui::IGUIElement*>::ConstIterator it = node->getChildren().begin();
+	for(; it != node->getChildren().end(); ++it)
+		scaleGui((*it),factorX,factorY);
+}
+
+bool guiPauseMenu::loadMenu()
+{
+	guienv->loadGUI("../data/pauseMenu.gui");
+
+	root=(gui::IGUIStaticText*)guienv->getRootGUIElement()->getElementFromId(255,true);
+	if(!root) // if there is no my root node then menu file not found or corrupted
+		return false;
+
+	scaleGui(); // scale gui to our screen size
+
+	root->setVisible(false); // hide our menu
+	// make it transparent
+	//root->setBackgroundColor(video::SColor(100,128,100,128));
+	root->setBackgroundColor(video::SColor(140,0,0,0));
+
+	return true;
+}
+
+guiPauseMenu::guiPauseMenu(IrrlichtDevice *device, IEventReceiver *recv) : dev(device), oldRecv(recv)
+{
+	if(!dev)
+		return;
+	guienv=dev->getGUIEnvironment();
+
+	if (!loadMenu())
+		return;
+
+	device->setEventReceiver(this); // now WE are the input receiver! ahhaha! 
+}
+
+bool guiPauseMenu::OnEvent(const SEvent& event)
+{
+	if(!dev->isWindowFocused())
+		setVisible(true);
+
+	bool ret=false;
+	if(oldRecv && !isVisible()) // call master if we have it and if we are inactive
+		ret=oldRecv->OnEvent(event);
+
+	if(ret==true)
+		return true; // if the master receiver does the work
+
+	if(event.EventType==EET_KEY_INPUT_EVENT)
+	{
+		if(event.KeyInput.Key==KEY_ESCAPE && event.KeyInput.PressedDown)
+		{
+			setVisible(!isVisible());
+		}
+	}
+	if(event.EventType==EET_GUI_EVENT)
+	{
+		if(event.GUIEvent.EventType==gui::EGET_BUTTON_CLICKED)
+		{
+			switch(event.GUIEvent.Caller->getID())
+			{
+			case 256: // continue
+				setVisible(false);
+				break;
+			case 257: // exit
+				dev->closeDevice();
+				break;
+			}
+		}
+	}
+
+	return false;
+}
+
+guiPauseMenu::~guiPauseMenu(void)
+{
+}

src/guiPauseMenu.h

+/*
+Minetest-c55
+Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Original author Kabak Dmitry <userdima@gmail.com>, contributed under
+the minetest contributor agreement.
+
+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 GUIPAUSEMENU_HEADER
+#define GUIPAUSEMENU_HEADER
+
+#include <irrlicht.h>
+using namespace irr;
+
+class guiPauseMenu : public IEventReceiver
+{
+private:
+	IrrlichtDevice *dev;
+	gui::IGUIEnvironment *guienv;
+	IEventReceiver *oldRecv;
+
+	gui::IGUIStaticText *root;
+
+	bool loadMenu();
+	void scaleGui();
+	void scaleGui(gui::IGUIElement *node,float factorX,float factorY);
+public:
+	guiPauseMenu(IrrlichtDevice *device,IEventReceiver *recv);
+
+	void setVisible(bool visible){root->setVisible(visible);};
+	bool isVisible(){return root->isVisible();};
+
+	bool OnEvent(const SEvent& event);
+
+	~guiPauseMenu(void);
+};
+
+#endif
+