604 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			604 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
/*
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 *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
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 *
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 *Permission is hereby granted, free of charge, to any person obtaining
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 * a copy of this software and associated documentation files (the
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 *"Software"), to deal in the Software without restriction, including
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 *without limitation the rights to use, copy, modify, merge, publish,
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 *distribute, sublicense, and/or sell copies of the Software, and to
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 *permit persons to whom the Software is furnished to do so, subject to
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 *the following conditions:
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 *
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 *The above copyright notice and this permission notice shall be
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 *included in all copies or substantial portions of the Software.
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 *
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 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
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 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 *Except as contained in this notice, the name of the XFree86 Project
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 *shall not be used in advertising or otherwise to promote the sale, use
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 *or other dealings in this Software without prior written authorization
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 *from the XFree86 Project.
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 *
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 * Authors:	Dakshinamurthy Karra
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 *		Suhaib M Siddiqi
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 *		Peter Busch
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 *		Harold L Hunt II
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 */
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#ifdef HAVE_XWIN_CONFIG_H
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#include <xwin-config.h>
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#endif
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#include "win.h"
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#include "dix/colormap_priv.h"
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/*
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 * Local prototypes
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 */
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static int
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 winListInstalledColormaps(ScreenPtr pScreen, Colormap * pmaps);
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static void
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 winStoreColors(ColormapPtr pmap, int ndef, xColorItem * pdefs);
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static void
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 winInstallColormap(ColormapPtr pmap);
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static void
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 winUninstallColormap(ColormapPtr pmap);
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static void
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winResolveColor(unsigned short *pred,
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                unsigned short *pgreen,
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                unsigned short *pblue, VisualPtr pVisual);
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static Bool
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 winCreateColormap(ColormapPtr pmap);
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static void
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 winDestroyColormap(ColormapPtr pmap);
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static Bool
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 winGetPaletteDIB(ScreenPtr pScreen, ColormapPtr pcmap);
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static Bool
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 winGetPaletteDD(ScreenPtr pScreen, ColormapPtr pcmap);
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/*
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 * Set screen functions for colormaps
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 */
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void
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winSetColormapFunctions(ScreenPtr pScreen)
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{
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    pScreen->CreateColormap = winCreateColormap;
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    pScreen->DestroyColormap = winDestroyColormap;
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    pScreen->InstallColormap = winInstallColormap;
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    pScreen->UninstallColormap = winUninstallColormap;
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    pScreen->ListInstalledColormaps = winListInstalledColormaps;
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    pScreen->StoreColors = winStoreColors;
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    pScreen->ResolveColor = winResolveColor;
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}
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/* See Porting Layer Definition - p. 30 */
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/*
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 * Walk the list of installed colormaps, filling the pmaps list
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 * with the resource ids of the installed maps, and return
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 * a count of the total number of installed maps.
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 */
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static int
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winListInstalledColormaps(ScreenPtr pScreen, Colormap * pmaps)
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{
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    winScreenPriv(pScreen);
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    /*
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     * There will only be one installed colormap, so we only need
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     * to return one id, and the count of installed maps will always
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     * be one.
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     */
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    *pmaps = pScreenPriv->pcmapInstalled->mid;
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    return 1;
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}
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/* See Porting Layer Definition - p. 30 */
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/* See Programming Windows - p. 663 */
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static void
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winInstallColormap(ColormapPtr pColormap)
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{
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    ScreenPtr pScreen = pColormap->pScreen;
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    winScreenPriv(pScreen);
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    ColormapPtr oldpmap = pScreenPriv->pcmapInstalled;
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#if ENABLE_DEBUG
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    winDebug("winInstallColormap\n");
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#endif
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    /* Did the colormap actually change? */
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    if (pColormap != oldpmap) {
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#if ENABLE_DEBUG
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        winDebug("winInstallColormap - Colormap has changed, attempt "
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                 "to install.\n");
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#endif
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        /* Was there a previous colormap? */
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        if (oldpmap != (ColormapPtr) None) {
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            /* There was a previous colormap; tell clients it is gone */
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            WalkTree(pColormap->pScreen, TellLostMap, (char *) &oldpmap->mid);
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        }
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        /* Install new colormap */
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        pScreenPriv->pcmapInstalled = pColormap;
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        WalkTree(pColormap->pScreen, TellGainedMap, (char *) &pColormap->mid);
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        /* Call the engine specific colormap install procedure */
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        if (!((*pScreenPriv->pwinInstallColormap) (pColormap))) {
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            winErrorFVerb(2,
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                          "winInstallColormap - Screen specific colormap install "
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                          "procedure failed.  Continuing, but colors may be "
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                          "messed up from now on.\n");
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        }
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    }
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    /* Save a pointer to the newly installed colormap */
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    pScreenPriv->pcmapInstalled = pColormap;
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}
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/* See Porting Layer Definition - p. 30 */
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static void
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winUninstallColormap(ColormapPtr pmap)
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{
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    winScreenPriv(pmap->pScreen);
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    ColormapPtr curpmap = pScreenPriv->pcmapInstalled;
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#if ENABLE_DEBUG
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    winDebug("winUninstallColormap\n");
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#endif
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    /* Is the colormap currently installed? */
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    if (pmap != curpmap) {
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        /* Colormap not installed, nothing to do */
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        return;
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    }
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    /* Clear the installed colormap flag */
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    pScreenPriv->pcmapInstalled = NULL;
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    /*
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     * NOTE: The default colormap does not get "uninstalled" before
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     * it is destroyed.
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     */
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    /* Install the default cmap in place of the cmap to be uninstalled */
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    if (pmap->mid != pmap->pScreen->defColormap) {
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        dixLookupResourceByType((void *) &curpmap, pmap->pScreen->defColormap,
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                                X11_RESTYPE_COLORMAP, NullClient, DixUnknownAccess);
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        (*pmap->pScreen->InstallColormap) (curpmap);
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    }
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}
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/* See Porting Layer Definition - p. 30 */
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static void
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winStoreColors(ColormapPtr pmap, int ndef, xColorItem * pdefs)
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{
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    ScreenPtr pScreen = pmap->pScreen;
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    winScreenPriv(pScreen);
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    winCmapPriv(pmap);
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    int i;
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    unsigned short nRed, nGreen, nBlue;
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#if ENABLE_DEBUG
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    if (ndef != 1)
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        winDebug("winStoreColors - ndef: %d\n", ndef);
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#endif
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    /* Save the new colors in the colormap privates */
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    for (i = 0; i < ndef; ++i) {
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        /* Adjust the colors from the X color spec to the Windows color spec */
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        nRed = pdefs[i].red >> 8;
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        nGreen = pdefs[i].green >> 8;
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        nBlue = pdefs[i].blue >> 8;
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        /* Copy the colors to a palette entry table */
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        pCmapPriv->peColors[pdefs[0].pixel + i].peRed = nRed;
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        pCmapPriv->peColors[pdefs[0].pixel + i].peGreen = nGreen;
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        pCmapPriv->peColors[pdefs[0].pixel + i].peBlue = nBlue;
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        /* Copy the colors to a RGBQUAD table */
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        pCmapPriv->rgbColors[pdefs[0].pixel + i].rgbRed = nRed;
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        pCmapPriv->rgbColors[pdefs[0].pixel + i].rgbGreen = nGreen;
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        pCmapPriv->rgbColors[pdefs[0].pixel + i].rgbBlue = nBlue;
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#if ENABLE_DEBUG
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        winDebug("winStoreColors - nRed %d nGreen %d nBlue %d\n",
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                 nRed, nGreen, nBlue);
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#endif
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    }
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    /* Call the engine specific store colors procedure */
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    if (!((pScreenPriv->pwinStoreColors) (pmap, ndef, pdefs))) {
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        winErrorFVerb(2,
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                      "winStoreColors - Engine cpecific color storage procedure "
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                      "failed.  Continuing, but colors may be messed up from now "
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                      "on.\n");
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    }
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}
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/* See Porting Layer Definition - p. 30 */
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static void
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winResolveColor(unsigned short *pred,
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                unsigned short *pgreen,
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                unsigned short *pblue, VisualPtr pVisual)
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{
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#if ENABLE_DEBUG
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    winDebug("winResolveColor ()\n");
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#endif
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    miResolveColor(pred, pgreen, pblue, pVisual);
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}
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/* See Porting Layer Definition - p. 29 */
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static Bool
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winCreateColormap(ColormapPtr pmap)
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{
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    winPrivCmapPtr pCmapPriv = NULL;
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    ScreenPtr pScreen = pmap->pScreen;
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    winScreenPriv(pScreen);
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#if ENABLE_DEBUG
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    winDebug("winCreateColormap\n");
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#endif
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    /* Allocate colormap privates */
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    if (!winAllocateCmapPrivates(pmap)) {
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        ErrorF("winCreateColorma - Couldn't allocate cmap privates\n");
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        return FALSE;
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    }
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    /* Get a pointer to the newly allocated privates */
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    pCmapPriv = winGetCmapPriv(pmap);
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    /*
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     * FIXME: This is some evil hackery to help in handling some X clients
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     * that expect the top pixel to be white.  This "help" only lasts until
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     * some client overwrites the top colormap entry.
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     *
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     * We don't want to actually allocate the top entry, as that causes
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     * problems with X clients that need 7 planes (128 colors) in the default
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     * colormap, such as Magic 7.1.
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     */
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    pCmapPriv->rgbColors[WIN_NUM_PALETTE_ENTRIES - 1].rgbRed = 255;
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    pCmapPriv->rgbColors[WIN_NUM_PALETTE_ENTRIES - 1].rgbGreen = 255;
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    pCmapPriv->rgbColors[WIN_NUM_PALETTE_ENTRIES - 1].rgbBlue = 255;
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    pCmapPriv->peColors[WIN_NUM_PALETTE_ENTRIES - 1].peRed = 255;
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    pCmapPriv->peColors[WIN_NUM_PALETTE_ENTRIES - 1].peGreen = 255;
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    pCmapPriv->peColors[WIN_NUM_PALETTE_ENTRIES - 1].peBlue = 255;
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    /* Call the engine specific colormap initialization procedure */
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    if (!((*pScreenPriv->pwinCreateColormap) (pmap))) {
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        ErrorF("winCreateColormap - Engine specific colormap creation "
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               "procedure failed.  Aborting.\n");
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        return FALSE;
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    }
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    return TRUE;
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}
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/* See Porting Layer Definition - p. 29, 30 */
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static void
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winDestroyColormap(ColormapPtr pColormap)
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{
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    winScreenPriv(pColormap->pScreen);
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    winCmapPriv(pColormap);
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    /* Call the engine specific colormap destruction procedure */
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    if (!((*pScreenPriv->pwinDestroyColormap) (pColormap))) {
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        winErrorFVerb(2,
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                      "winDestroyColormap - Engine specific colormap destruction "
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                      "procedure failed.  Continuing, but it is possible that memory "
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                      "was leaked, or that colors will be messed up from now on.\n");
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    }
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    /* Free the colormap privates */
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    free(pCmapPriv);
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    winSetCmapPriv(pColormap, NULL);
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#if ENABLE_DEBUG
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    winDebug("winDestroyColormap - Returning\n");
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#endif
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}
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/*
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 * Internal function to load the palette used by the Shadow DIB
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 */
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static Bool
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winGetPaletteDIB(ScreenPtr pScreen, ColormapPtr pcmap)
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{
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    winScreenPriv(pScreen);
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    int i;
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    Pixel pixel;                /* Pixel == CARD32 */
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    CARD16 nRed, nGreen, nBlue; /* CARD16 == unsigned short */
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    UINT uiColorsRetrieved = 0;
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    RGBQUAD rgbColors[WIN_NUM_PALETTE_ENTRIES];
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    /* Get the color table for the screen */
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    uiColorsRetrieved = GetDIBColorTable(pScreenPriv->hdcScreen,
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                                         0, WIN_NUM_PALETTE_ENTRIES, rgbColors);
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    if (uiColorsRetrieved == 0) {
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        ErrorF("winGetPaletteDIB - Could not retrieve screen color table\n");
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        return FALSE;
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    }
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#if ENABLE_DEBUG
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    winDebug("winGetPaletteDIB - Retrieved %d colors from DIB\n",
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             uiColorsRetrieved);
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#endif
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    /* Set the DIB color table to the default screen palette */
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    if (SetDIBColorTable(pScreenPriv->hdcShadow,
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                         0, uiColorsRetrieved, rgbColors) == 0) {
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        ErrorF("winGetPaletteDIB - SetDIBColorTable () failed\n");
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        return FALSE;
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    }
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    /* Alloc each color in the DIB color table */
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    for (i = 0; i < uiColorsRetrieved; ++i) {
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        pixel = i;
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        /* Extract the color values for current palette entry */
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        nRed = rgbColors[i].rgbRed << 8;
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        nGreen = rgbColors[i].rgbGreen << 8;
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        nBlue = rgbColors[i].rgbBlue << 8;
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#if ENABLE_DEBUG
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        winDebug("winGetPaletteDIB - Allocating a color: %u; "
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                 "%d %d %d\n", (unsigned int)pixel, nRed, nGreen, nBlue);
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#endif
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        /* Allocate a entry in the X colormap */
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        if (AllocColor(pcmap, &nRed, &nGreen, &nBlue, &pixel, 0) != Success) {
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            ErrorF("winGetPaletteDIB - AllocColor () failed, pixel %d\n", i);
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            return FALSE;
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        }
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        if (i != pixel
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            || nRed != rgbColors[i].rgbRed
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            || nGreen != rgbColors[i].rgbGreen
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            || nBlue != rgbColors[i].rgbBlue) {
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            winDebug("winGetPaletteDIB - Got: %d; "
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                     "%d %d %d\n", (int) pixel, nRed, nGreen, nBlue);
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        }
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        /* FIXME: Not sure that this bit is needed at all */
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        pcmap->red[i].co.local.red = nRed;
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        pcmap->red[i].co.local.green = nGreen;
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        pcmap->red[i].co.local.blue = nBlue;
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    }
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    /* System is using a colormap */
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    /* Set the black and white pixel indices */
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    pScreen->whitePixel = uiColorsRetrieved - 1;
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    pScreen->blackPixel = 0;
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    return TRUE;
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}
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/*
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 * Internal function to load the standard system palette being used by DD
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 */
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static Bool
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winGetPaletteDD(ScreenPtr pScreen, ColormapPtr pcmap)
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{
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    int i;
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    Pixel pixel;                /* Pixel == CARD32 */
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    CARD16 nRed, nGreen, nBlue; /* CARD16 == unsigned short */
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    UINT uiSystemPaletteEntries;
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    HDC hdc = NULL;
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    /* Get a DC to obtain the default palette */
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    hdc = GetDC(NULL);
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    if (hdc == NULL) {
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        ErrorF("winGetPaletteDD - Couldn't get a DC\n");
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        return FALSE;
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    }
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    /* Get the number of entries in the system palette */
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    uiSystemPaletteEntries = GetSystemPaletteEntries(hdc, 0, 0, NULL);
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    if (uiSystemPaletteEntries == 0) {
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        ErrorF("winGetPaletteDD - Unable to determine number of "
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               "system palette entries\n");
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        return FALSE;
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    }
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#if ENABLE_DEBUG
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    winDebug("winGetPaletteDD - uiSystemPaletteEntries %d\n",
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             uiSystemPaletteEntries);
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#endif
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    /* Allocate palette entries structure */
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    LPPALETTEENTRY ppeColors = calloc(uiSystemPaletteEntries, sizeof(PALETTEENTRY));
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    if (ppeColors == NULL) {
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        ErrorF("winGetPaletteDD - calloc () for colormap failed\n");
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        return FALSE;
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    }
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 | 
						|
    /* Get system palette entries */
 | 
						|
    GetSystemPaletteEntries(hdc, 0, uiSystemPaletteEntries, ppeColors);
 | 
						|
 | 
						|
    /* Allocate an X colormap entry for every system palette entry */
 | 
						|
    for (i = 0; i < uiSystemPaletteEntries; ++i) {
 | 
						|
        pixel = i;
 | 
						|
 | 
						|
        /* Extract the color values for current palette entry */
 | 
						|
        nRed = ppeColors[i].peRed << 8;
 | 
						|
        nGreen = ppeColors[i].peGreen << 8;
 | 
						|
        nBlue = ppeColors[i].peBlue << 8;
 | 
						|
#if ENABLE_DEBUG
 | 
						|
        winDebug("winGetPaletteDD - Allocating a color: %u; "
 | 
						|
                 "%d %d %d\n", (unsigned int)pixel, nRed, nGreen, nBlue);
 | 
						|
#endif
 | 
						|
        if (AllocColor(pcmap, &nRed, &nGreen, &nBlue, &pixel, 0) != Success) {
 | 
						|
            ErrorF("winGetPaletteDD - AllocColor () failed, pixel %d\n", i);
 | 
						|
            free(ppeColors);
 | 
						|
            ppeColors = NULL;
 | 
						|
            return FALSE;
 | 
						|
        }
 | 
						|
 | 
						|
        pcmap->red[i].co.local.red = nRed;
 | 
						|
        pcmap->red[i].co.local.green = nGreen;
 | 
						|
        pcmap->red[i].co.local.blue = nBlue;
 | 
						|
    }
 | 
						|
 | 
						|
    /* System is using a colormap */
 | 
						|
    /* Set the black and white pixel indices */
 | 
						|
    pScreen->whitePixel = uiSystemPaletteEntries - 1;
 | 
						|
    pScreen->blackPixel = 0;
 | 
						|
 | 
						|
    /* Free colormap */
 | 
						|
    free(ppeColors);
 | 
						|
    ppeColors = NULL;
 | 
						|
 | 
						|
    /* Free the DC */
 | 
						|
    if (hdc != NULL) {
 | 
						|
        ReleaseDC(NULL, hdc);
 | 
						|
        hdc = NULL;
 | 
						|
    }
 | 
						|
 | 
						|
    return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
/*
 | 
						|
 * Install the standard fb colormap, or the GDI colormap,
 | 
						|
 * depending on the current screen depth.
 | 
						|
 */
 | 
						|
 | 
						|
Bool
 | 
						|
winCreateDefColormap(ScreenPtr pScreen)
 | 
						|
{
 | 
						|
    winScreenPriv(pScreen);
 | 
						|
    winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
 | 
						|
    unsigned short zero = 0, ones = 0xFFFF;
 | 
						|
    VisualPtr pVisual = pScreenPriv->pRootVisual;
 | 
						|
    ColormapPtr pcmap = NULL;
 | 
						|
    Pixel wp, bp;
 | 
						|
 | 
						|
#if ENABLE_DEBUG
 | 
						|
    winDebug("winCreateDefColormap\n");
 | 
						|
#endif
 | 
						|
 | 
						|
    /* Use standard fb colormaps for non palettized color modes */
 | 
						|
    if (pScreenInfo->dwBPP > 8) {
 | 
						|
        winDebug("winCreateDefColormap - Deferring to "
 | 
						|
                 "fbCreateDefColormap ()\n");
 | 
						|
        return fbCreateDefColormap(pScreen);
 | 
						|
    }
 | 
						|
 | 
						|
    /*
 | 
						|
     *  AllocAll for non-Dynamic visual classes,
 | 
						|
     *  AllocNone for Dynamic visual classes.
 | 
						|
     */
 | 
						|
 | 
						|
    /*
 | 
						|
     * Dynamic visual classes allow the colors of the color map
 | 
						|
     * to be changed by clients.
 | 
						|
     */
 | 
						|
 | 
						|
#if ENABLE_DEBUG
 | 
						|
    winDebug("winCreateDefColormap - defColormap: %lu\n", pScreen->defColormap);
 | 
						|
#endif
 | 
						|
 | 
						|
    /* Allocate an X colormap, owned by client 0 */
 | 
						|
    if (dixCreateColormap(pScreen->defColormap,
 | 
						|
                          pScreen,
 | 
						|
                          pVisual,
 | 
						|
                          &pcmap,
 | 
						|
                          (pVisual->class & DynamicClass) ? AllocNone : AllocAll,
 | 
						|
                          serverClient) != Success) {
 | 
						|
        ErrorF("winCreateDefColormap - CreateColormap failed\n");
 | 
						|
        return FALSE;
 | 
						|
    }
 | 
						|
    if (pcmap == NULL) {
 | 
						|
        ErrorF("winCreateDefColormap - Colormap could not be created\n");
 | 
						|
        return FALSE;
 | 
						|
    }
 | 
						|
 | 
						|
#if ENABLE_DEBUG
 | 
						|
    winDebug("winCreateDefColormap - Created a colormap\n");
 | 
						|
#endif
 | 
						|
 | 
						|
    /* Branch on the visual class */
 | 
						|
    if (!(pVisual->class & DynamicClass)) {
 | 
						|
        /* Branch on engine type */
 | 
						|
        if (pScreenInfo->dwEngine == WIN_SERVER_SHADOW_GDI) {
 | 
						|
            /* Load the colors being used by the Shadow DIB */
 | 
						|
            if (!winGetPaletteDIB(pScreen, pcmap)) {
 | 
						|
                ErrorF("winCreateDefColormap - Couldn't get DIB colors\n");
 | 
						|
                return FALSE;
 | 
						|
            }
 | 
						|
        }
 | 
						|
        else {
 | 
						|
            /* Load the colors from the default system palette */
 | 
						|
            if (!winGetPaletteDD(pScreen, pcmap)) {
 | 
						|
                ErrorF("winCreateDefColormap - Couldn't get colors "
 | 
						|
                       "for DD\n");
 | 
						|
                return FALSE;
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
    else {
 | 
						|
        wp = pScreen->whitePixel;
 | 
						|
        bp = pScreen->blackPixel;
 | 
						|
 | 
						|
        /* Allocate a black and white pixel */
 | 
						|
        if ((AllocColor(pcmap, &ones, &ones, &ones, &wp, 0) != Success)
 | 
						|
            || (AllocColor(pcmap, &zero, &zero, &zero, &bp, 0) != Success)) {
 | 
						|
            ErrorF("winCreateDefColormap - Couldn't allocate bp or wp\n");
 | 
						|
            return FALSE;
 | 
						|
        }
 | 
						|
 | 
						|
        pScreen->whitePixel = wp;
 | 
						|
        pScreen->blackPixel = bp;
 | 
						|
 | 
						|
#if 0
 | 
						|
        /* Have to reserve first 10 and last ten pixels in DirectDraw windowed */
 | 
						|
        if (pScreenInfo->dwEngine != WIN_SERVER_SHADOW_GDI) {
 | 
						|
            int k;
 | 
						|
            Pixel p;
 | 
						|
 | 
						|
            for (k = 1; k < 10; ++k) {
 | 
						|
                p = k;
 | 
						|
                if (AllocColor(pcmap, &ones, &ones, &ones, &p, 0) != Success)
 | 
						|
                    FatalError("Foo!\n");
 | 
						|
            }
 | 
						|
 | 
						|
            for (k = 245; k < 255; ++k) {
 | 
						|
                p = k;
 | 
						|
                if (AllocColor(pcmap, &zero, &zero, &zero, &p, 0) != Success)
 | 
						|
                    FatalError("Baz!\n");
 | 
						|
            }
 | 
						|
        }
 | 
						|
#endif
 | 
						|
    }
 | 
						|
 | 
						|
    /* Install the created colormap */
 | 
						|
    (*pScreen->InstallColormap) (pcmap);
 | 
						|
 | 
						|
#if ENABLE_DEBUG
 | 
						|
    winDebug("winCreateDefColormap - Returning\n");
 | 
						|
#endif
 | 
						|
 | 
						|
    return TRUE;
 | 
						|
}
 |