mouse.cpp from NeoEngineNG at Krugle

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/***************************************************************************
                 mouse.cpp  -  Mouse and pointer auxiliary methods
                             -------------------
    begin                : Tue Apr 1 2003
    copyright            : (C) 2003 by Reality Rift Studios
    email                : mattias@realityrift.com
 ***************************************************************************

 The contents of this file are subject to the Mozilla Public License Version
 1.1 (the "License"); you may not use this file except in compliance with
 the License. You may obtain a copy of the License at 
 http://www.mozilla.org/MPL/

 Software distributed under the License is distributed on an "AS IS" basis,
 WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 for the specific language governing rights and limitations under the
 License.

 The Original Code is the NeoEngine, NeoDevOpenGL, mouse.cpp

 The Initial Developer of the Original Code is Mattias Jansson.
 Portions created by Mattias Jansson are Copyright (C) 2003
 Reality Rift Studios. All Rights Reserved.

 ***************************************************************************/

#include "device.h"

#include <neoengine/logstream.h>

using namespace std;
using namespace NeoEngine;


namespace NeoOGL
{

void Device::SetMouseCursor( int iForm ){
#ifdef WIN32
	if (iForm==0)
		SetCursor(LoadCursor(NULL,IDC_CROSS));
	else
		SetCursor(LoadCursor(NULL,MAKEINTRESOURCE(iForm)));
	//m_iMouseShape=iForm;
	setMouseShape(iForm);
#endif
}

void Device::SetMousePos( int iX, int iY )
{
	if( iX < 0 )
		iX = 0;
	else if( iX >= (int)m_kWindow.m_kResolution.m_uiWidth )
		iX = m_kWindow.m_kResolution.m_uiWidth - 1;

	if( iY < 0 )
		iY = 0;
	else if( iY >= (int)m_kWindow.m_kResolution.m_uiHeight )
		iY = m_kWindow.m_kResolution.m_uiHeight - 1;

#ifdef WIN32

	POINT pt;

	pt.x = iX;
	pt.y = iY;

	ClientToScreen( (HWND)m_kWindow.m_hWnd, &pt );

	SetCursorPos( pt.x, pt.y );

#elif POSIX

	XWarpPointer( (Display*)m_kWindow.m_pDisplay, (Window)m_kWindow.m_Window, (Window)m_kWindow.m_Window, 0, 0, m_kWindow.m_kResolution.m_uiWidth, m_kWindow.m_kResolution.m_uiHeight, iX, iY );

#elif __APPLE__

	CGPoint pt;

	pt.x = iX;
	pt.y = iY;

	CGPostMouseEvent( pt, TRUE, 0, FALSE);

#else
#  error Platform not implemented
#endif

}


void Device::CaptureMouse( bool bCapture )
{
	if( bCapture )
	{
#ifdef WIN32

		POINT pt;

		pt.x = 0;
		pt.y = 0;

		ClientToScreen( (HWND)m_kWindow.m_hWnd, &pt );

		RECT rect;

		rect.top    = pt.x;
		rect.bottom = rect.top + m_kWindow.m_kResolution.m_uiHeight;
		rect.left   = pt.y;
		rect.right  = rect.left + m_kWindow.m_kResolution.m_uiWidth;

		ClipCursor( &rect );

#elif POSIX

		if( XGrabPointer( (Display*)m_kWindow.m_pDisplay, (Window)m_kWindow.m_Window, true, 0, GrabModeAsync, GrabModeAsync, (Window)m_kWindow.m_Window, None, CurrentTime ) != GrabSuccess )
			neolog << LogLevel( WARNING ) << "Unable to capture mouse!" << endl;

#elif __APPLE__

		neolog << LogLevel( ERROR ) << "[Device::CaptureMouse] capture not implemented" << endl;

#else
#  error Platform not implemented
#endif

	}
	else
	{

#ifdef WIN32

		ClipCursor( 0 );

#elif POSIX

		XUngrabPointer( (Display*)m_kWindow.m_pDisplay, CurrentTime );

#elif __APPLE__

		neolog << LogLevel( ERROR ) << "[Device::CaptureMouse] uncapture not implemented"  << endl;

#else
#  error Platform not implemented
#endif

	}
}


void Device::ShowCursor( bool bShow )
{
#ifdef WIN32

	::ShowCursor( bShow ? TRUE : FALSE );

#elif POSIX

	if( bShow )
		XDefineCursor( (Display*)m_kWindow.m_pDisplay, (Window)m_kWindow.m_Window, 0 );
	else
	{
		Cursor    kEmptyCursor;
		Pixmap    kEmptyPixmap;
		XColor    kBlack;
		XColor    kUnused;
		Colormap  kColormap;
		Display  *pkDisplay = (Display*)m_kWindow.m_pDisplay;
		Window    kWindow   = (Window)m_kWindow.m_Window;

		unsigned char aucEmptyCursorData[] = { 0,0,0,0,0,0,0,0 };

		kColormap    = DefaultColormap( pkDisplay, DefaultScreen( pkDisplay ) );

		XAllocNamedColor( pkDisplay, kColormap, "black", &kBlack, &kUnused );

		kEmptyPixmap = XCreateBitmapFromData( pkDisplay, kWindow, (const char*)aucEmptyCursorData, 8, 8 );
		kEmptyCursor = XCreatePixmapCursor( pkDisplay, kEmptyPixmap, kEmptyPixmap, &kBlack, &kBlack, 0, 0 );

		XDefineCursor( pkDisplay, kWindow, kEmptyCursor );
		XFreeCursor( pkDisplay, kEmptyCursor );

		if( kEmptyPixmap != None )
			XFreePixmap( pkDisplay, kEmptyPixmap );
	}

#elif __APPLE__
	//NOT IMPLEMENTED!
#else
#  error Platform not implemented
#endif
}


}; // namespace NeoOGL
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