Difference between revisions of "Moving any Window"

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=== Files ===
 
=== Files ===
 
==== MovingAnyWindow.h ====
 
==== MovingAnyWindow.h ====
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#ifndef _00MovingAnyWindow_h_
 
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#endif  // _00MovingAnyWindow_h_
 
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#if defined( __WIN32__ ) || defined( _WIN32 )
 
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#define WIN32_LEAN_AND_MEAN
 
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     return app.run();
 
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Revision as of 11:21, 28 February 2011

Introduction

This bit of code shows how you can play with the Cegui events to move any window, not just FrameWindows.

The current implementation listens for a right mouse click. When a CEGUI::Window* is right clicked it is flagged as being a "moving window". The GUI Sheet then subscribes to mouse move events, and upon a mouse movement event the "moving window"'s position is changed appropriately. Right clicking again releases the window.

A better implementation would be to have a border around the edge of the window. When the cursor would be positioned above that border it would display a moving cursor. Dragging (pressing down and holding the left mouse button) while above that border would move the window around.

Files

MovingAnyWindow.h

#ifndef _00MovingAnyWindow_h_
#define _00MovingAnyWindow_h_
 
#include "CEGuiSample.h"
#include "CEGUI.h"
 
class DemoSample : public CEGuiSample
{
public:
    // method to initialise the sample windows and events.
    bool initialiseSample()
	{
		using namespace CEGUI;
		try
		{
			// Retrieve the window manager
			WindowManager& winMgr = WindowManager::getSingleton();
 
			// Load the TaharezLook scheme and set up the default mouse cursor and font
			Scheme* currentScheme = SchemeManager::getSingleton().loadScheme("TaharezLook.scheme");
			System::getSingleton().setDefaultMouseCursor("TaharezLook", "MouseArrow");
			if(!FontManager::getSingleton().isFontPresent("Commonwealth-10"))
				FontManager::getSingleton().createFont("Commonwealth-10.font");
 
			// Set the GUI Sheet
			Window* sheet = winMgr.createWindow("DefaultWindow", "root_wnd");
			System::getSingleton().setGUISheet(sheet);
 
			// Initially we are not moving any window
			mMovingWindow = 0;
 
			// We have not yet clicked on the button
			mClickCount = 0;
 
			// Create a button
			PushButton* pushButton = static_cast<PushButton*>(winMgr.createWindow("TaharezLook/Button", "Pushbutton"));
			sheet->addChildWindow(pushButton);
			pushButton->setPosition(UVector2(cegui_reldim(0.81f), cegui_reldim( 0.32f)));
			pushButton->setSize(UVector2(cegui_reldim(0.15f), cegui_reldim( 0.2f)));
			pushButton->setText("Click");
			pushButton->subscribeEvent(CEGUI::PushButton::EventMouseClick, Event::Subscriber(&DemoSample::onRightClick,	this));
			pushButton->subscribeEvent(CEGUI::PushButton::EventClicked, Event::Subscriber(&DemoSample::onLeftClick,		this));
 
			// Create a multicolum list
			MultiColumnList* mcl = static_cast<MultiColumnList*>(winMgr.createWindow("TaharezLook/MultiColumnList", "MultiColumnList"));
			sheet->addChildWindow(mcl);
			mcl->setPosition(UVector2(cegui_reldim(0.01f), cegui_reldim( 0.1f)));
			mcl->setSize(UVector2(cegui_reldim(0.5f), cegui_reldim( 0.8f)));
			mcl->subscribeEvent(CEGUI::MultiColumnList::EventMouseClick, Event::Subscriber(&DemoSample::onRightClick,	this));
		}
		catch(Exception &e)
		{
			#if defined( __WIN32__ ) || defined( _WIN32 )
				MessageBox(NULL, e.getMessage().c_str(), "Error initializing the demo", MB_OK | MB_ICONERROR | MB_TASKMODAL);
			#else
				std::cerr << "Error initializing the demo:" << e.getMessage().c_str() << "\n";
			#endif
		}
 
		return true;
	}
 
    // method to perform any required cleanup operations.
    void cleanupSample(void)
	{
	}
 
	bool onRightClick(const CEGUI::EventArgs& pEventArgs)
	{
		using namespace CEGUI;
		const MouseEventArgs mouseEventArgs = static_cast<const MouseEventArgs&>(pEventArgs);
		if(mouseEventArgs.button == CEGUI::RightButton)
		{
			if(mMovingWindow)
			{
				// We were moving a window, stop doing so on a second right click
				mMovingEvent->disconnect();
				mMovingWindow = 0;
			}
			else
			{
				// Start moving a window when right clicking
				const WindowEventArgs windowEventArgs = static_cast<const WindowEventArgs&>(pEventArgs);
				mMovingWindow = windowEventArgs.window;
				mMovingEvent = System::getSingleton().getGUISheet()->subscribeEvent(CEGUI::Window::EventMouseMove, Event::Subscriber(&DemoSample::onWindowMove,	this));
				mMousePosInWindow = CoordConverter::screenToWindow(*mMovingWindow, MouseCursor::getSingleton().getPosition());
			}
			return false; // Do not propagate this event to other subscribers
		}
		return true;
	}
 
	bool onLeftClick(const CEGUI::EventArgs& pEventArgs)
	{
		// This is to check that the event is not propagated
		using namespace CEGUI;
		const WindowEventArgs windowEventArgs = static_cast<const WindowEventArgs&>(pEventArgs);
		++mClickCount;
		windowEventArgs.window->setText("Click " + CEGUI::PropertyHelper::intToString(mClickCount));
		return true;
	}
 
	bool onWindowMove(const CEGUI::EventArgs& pEventArgs)
	{
		using namespace CEGUI;
		const MouseEventArgs mouseEventArgs = static_cast<const MouseEventArgs&>(pEventArgs);
		Vector2 localMousePos = CoordConverter::screenToWindow(*mMovingWindow, mouseEventArgs.position);
        UVector2 mouseMoveOffset(cegui_absdim(localMousePos.d_x), cegui_absdim(localMousePos.d_y));
		UVector2 mouseOffsetInWindow(cegui_absdim(mMousePosInWindow.d_x), cegui_absdim(mMousePosInWindow.d_y));
		mMovingWindow->setPosition(mMovingWindow->getPosition() + mouseMoveOffset - mouseOffsetInWindow);
		return true;
	}
 
private:
	CEGUI::Window* mMovingWindow;
	CEGUI::Event::Connection mMovingEvent;
	CEGUI::Vector2 mMousePosInWindow;
	int mClickCount;
};
 
#endif  // _00MovingAnyWindow_h_

main.cpp

#if defined( __WIN32__ ) || defined( _WIN32 )
	#define WIN32_LEAN_AND_MEAN
	#define NOMINMAX
	#include "windows.h"
#endif
 
#include "MovingAnyWindow.h"
 
 
#if defined( __WIN32__ ) || defined( _WIN32 )
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine,int nCmdShow)
#else
int main(int argc, char *argv[])
#endif
{
    DemoSample app;
    return app.run();
}
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