visuals.cpp
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: visuals.cpp,v 1.1.1.1.42.2 2004/07/09 12:48:45 pankajgupta Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include <stdio.h>
- #include <stdlib.h>
- #include "visuals.h"
- #if defined(_AIX)
- #include <stdlib.h>
- #endif
- // local helpers
- #ifdef _DEBUG
- void PrintVisualInfo(XVisualInfo info);
- #endif
- #ifdef _DEBUG
- //#define PRINTVISUAL 0
- int print_visual = 0;
- #endif
- Visual* GetBestVisual(Display* display)
- {
- Visual* vis = NULL;
- XVisualInfo vinfo_template;
- long mask;
- #ifdef _DEBUG
- #ifdef PRINTVISUAL
- // Print out the display visuals.
- if(print_visual == 0)
- {
- int nused, nmaps = MaxCmapsOfScreen(XDefaultScreenOfDisplay(display));
- XLockDisplay(display);
- Colormap* pMaps = XListInstalledColormaps(display,
- XDefaultRootWindow(display), &nused);
- XUnlockDisplay(display);
- XFree(pMaps);
- printf("This screen supports %d colormaps. (%d are used)n", nmaps, nused);
- int items;
- XVisualInfo* vinfo_list;
- XLockDisplay(display);
- vinfo_list = XGetVisualInfo(display, 0, &vinfo_template, &items);
- XUnlockDisplay(display);
- if (items > 0)
- {
- for(int i = 0; i < items; i++)
- {
- PrintVisualInfo(vinfo_list[i]);
- }
- }
- XFree(vinfo_list);
- print_visual = 1;
- }
- #endif
- #endif
- // Search for a visual on the display that will support our images.
- memset(&vinfo_template, 0, sizeof(XVisualInfo));
- vinfo_template.depth = 24;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0x0000ff;
- vinfo_template.green_mask = 0x00ff00;
- vinfo_template.red_mask = 0xff0000;
- mask = VisualDepthMask|VisualClassMask|VisualRedMaskMask|
- VisualGreenMaskMask|VisualBlueMaskMask;
- vis = GetVisual(display, mask, &vinfo_template);
- if (!vis)
- {
- vinfo_template.depth = 24;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0xff0000;
- vinfo_template.green_mask = 0x00ff00;
- vinfo_template.red_mask = 0x0000ff;
- mask = VisualDepthMask|VisualClassMask|VisualRedMaskMask|
- VisualGreenMaskMask|VisualBlueMaskMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- vinfo_template.depth = 16;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0x001f;
- vinfo_template.green_mask = 0x07e0;
- vinfo_template.red_mask = 0xf800;
- mask = VisualDepthMask|VisualClassMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- vinfo_template.depth = 15;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0x001f;
- vinfo_template.green_mask = 0x03e0;
- vinfo_template.red_mask = 0x7c00;
- mask = VisualDepthMask|VisualClassMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- vinfo_template.depth = 8;
- vinfo_template.c_class = PseudoColor;
- mask = VisualDepthMask|VisualClassMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- vinfo_template.depth = 32;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0xff0000;
- vinfo_template.green_mask = 0x00ff00;
- vinfo_template.red_mask = 0x0000ff;
- mask = VisualDepthMask|VisualClassMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- vinfo_template.depth = 32;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0xff000000;
- vinfo_template.green_mask = 0x00ff0000;
- vinfo_template.red_mask = 0x0000ff00;
- mask = VisualDepthMask|VisualClassMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- vinfo_template.depth = 32;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0x0000ff;
- vinfo_template.green_mask = 0x00ff00;
- vinfo_template.red_mask = 0xff0000;
- mask = VisualDepthMask|VisualClassMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- vinfo_template.depth = 32;
- vinfo_template.c_class = TrueColor;
- vinfo_template.blue_mask = 0x0000ff00;
- vinfo_template.green_mask = 0x00ff0000;
- vinfo_template.red_mask = 0xff000000;
- mask = VisualDepthMask|VisualClassMask;
- vis = GetVisual(display, mask, &vinfo_template);
- }
- if (!vis)
- {
- // No valid visual found.
- printf("G2 Core: Requires 15/16/24/32 bit TrueColor or PseudoColor Visual display.n");
- exit(1);
- }
- return vis;
- }
- Visual* GetVisual(Display* display, long mask, XVisualInfo* templ)
- {
- int items;
- XVisualInfo* vinfo_list;
- Visual* res = NULL;
- XLockDisplay(display);
- vinfo_list = XGetVisualInfo(display, mask, templ, &items);
- XUnlockDisplay(display);
- if (items > 0)
- {
- for(int i = 0; i < items; i++)
- {
- if((vinfo_list[i].c_class == templ->c_class) &&
- (vinfo_list[i].depth == templ->depth))
- {
- #ifdef _DEBUG
- //printf("GetVisual: Found best visual.n");
- PrintVisualInfo(vinfo_list[i]);
- #endif
- res = vinfo_list[i].visual;
- break;
- }
- }
- }
- if (vinfo_list)
- XFree(vinfo_list);
- return res;
- }
- #ifdef _DEBUG
- void PrintVisualInfo(XVisualInfo info)
- {
- char* pClass;
- switch(info.c_class)
- {
- case GrayScale: pClass = "GrayScale"; break;
- case StaticGray: pClass = "StaticGray"; break;
- case TrueColor: pClass = "TrueColor"; break;
- case DirectColor: pClass = "DirectColor"; break;
- case PseudoColor: pClass = "PseudoColor"; break;
- case StaticColor: pClass = "StaticColor"; break;
- }
- printf("Class = %s, Depth = %dn", pClass, info.depth);
- }
- #endif