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/*
* Id: fbscreen.c,v 1.1 1999/11/02 03:54:45 keithp Exp $
*
* Copyright © 1998 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $XFree86: xc/programs/Xserver/fb/fbscreen.c,v 1.11 2000/09/03 05:09:47 keithp Exp $ */
#include "fb.h"
Bool
fbCloseScreen (int index, ScreenPtr pScreen)
{
int d;
DepthPtr depths = pScreen->allowedDepths;
for (d = 0; d < pScreen->numDepths; d++)
xfree (depths[d].vids);
xfree (depths);
xfree (pScreen->visuals);
xfree (pScreen->devPrivate);
#ifdef FB_SCREEN_PRIVATE
xfree (pScreen->devPrivates[fbScreenPrivateIndex].ptr);
#endif
return TRUE;
}
Bool
fbRealizeFont(ScreenPtr pScreen, FontPtr pFont)
{
return (TRUE);
}
Bool
fbUnrealizeFont(ScreenPtr pScreen, FontPtr pFont)
{
return (TRUE);
}
void
fbQueryBestSize (int class,
unsigned short *width, unsigned short *height,
ScreenPtr pScreen)
{
unsigned short w;
switch (class) {
case CursorShape:
if (*width > pScreen->width)
*width = pScreen->width;
if (*height > pScreen->height)
*height = pScreen->height;
break;
case TileShape:
case StippleShape:
w = *width;
if ((w & (w - 1)) && w < FB_UNIT)
{
for (w = 1; w < *width; w <<= 1)
;
*width = w;
}
}
}
Bool
fbSetupScreen(ScreenPtr pScreen,
pointer pbits, /* pointer to screen bitmap */
int xsize, /* in pixels */
int ysize,
int dpix, /* dots per inch */
int dpiy,
int width, /* pixel width of frame buffer */
int bpp) /* bits per pixel for screen */
{
if (!fbAllocatePrivates(pScreen, (int *) 0))
return FALSE;
pScreen->defColormap = FakeClientID(0);
/* let CreateDefColormap do whatever it wants for pixels */
pScreen->blackPixel = pScreen->whitePixel = (Pixel) 0;
pScreen->QueryBestSize = fbQueryBestSize;
/* SaveScreen */
pScreen->GetImage = fbGetImage;
pScreen->GetSpans = fbGetSpans;
pScreen->CreateWindow = fbCreateWindow;
pScreen->DestroyWindow = fbDestroyWindow;
pScreen->PositionWindow = fbPositionWindow;
pScreen->ChangeWindowAttributes = fbChangeWindowAttributes;
pScreen->RealizeWindow = fbMapWindow;
pScreen->UnrealizeWindow = fbUnmapWindow;
pScreen->PaintWindowBackground = fbPaintWindow;
pScreen->PaintWindowBorder = fbPaintWindow;
pScreen->CopyWindow = fbCopyWindow;
pScreen->CreatePixmap = fbCreatePixmap;
pScreen->DestroyPixmap = fbDestroyPixmap;
pScreen->RealizeFont = fbRealizeFont;
pScreen->UnrealizeFont = fbUnrealizeFont;
pScreen->CreateGC = fbCreateGC;
pScreen->CreateColormap = fbInitializeColormap;
pScreen->DestroyColormap = (void (*)(ColormapPtr))NoopDDA;
pScreen->InstallColormap = fbInstallColormap;
pScreen->UninstallColormap = fbUninstallColormap;
pScreen->ListInstalledColormaps = fbListInstalledColormaps;
pScreen->StoreColors = (void (*)(ColormapPtr, int, xColorItem *))NoopDDA;
pScreen->ResolveColor = fbResolveColor;
pScreen->BitmapToRegion = fbPixmapToRegion;
#ifndef FB_OLD_SCREEN
pScreen->BackingStoreFuncs.SaveAreas = fbSaveAreas;
pScreen->BackingStoreFuncs.RestoreAreas = fbRestoreAreas;
pScreen->BackingStoreFuncs.SetClipmaskRgn = 0;
pScreen->BackingStoreFuncs.GetImagePixmap = 0;
pScreen->BackingStoreFuncs.GetSpansPixmap = 0;
#endif
return TRUE;
}
Bool
fbFinishScreenInit(ScreenPtr pScreen,
pointer pbits,
int xsize,
int ysize,
int dpix,
int dpiy,
int width,
int bpp)
{
VisualPtr visuals;
DepthPtr depths;
int nvisuals;
int ndepths;
int rootdepth;
VisualID defaultVisual;
int imagebpp = bpp;
#ifdef FB_DEBUG
int stride;
ysize -= 2;
stride = (width * bpp) / 8;
fbSetBits ((FbStip *) pbits,
stride / sizeof (FbStip), FB_HEAD_BITS);
pbits = (void *) ((char *) pbits + stride);
fbSetBits ((FbStip *) ((char *) pbits + stride * ysize),
stride / sizeof (FbStip), FB_TAIL_BITS);
#endif
/*
* By default, a 24bpp screen will use 32bpp images, this avoids
* problems with many applications which just can't handle packed
* pixels. If you want real 24bit images, include a 24bpp
* format in the pixmap formats
*/
#ifdef FB_24_32BIT
if (bpp == 24)
{
int f;
imagebpp = 32;
/*
* Check to see if we're advertising a 24bpp image format,
* in which case windows will use it in preference to a 32 bit
* format.
*/
for (f = 0; f < screenInfo.numPixmapFormats; f++)
{
if (screenInfo.formats[f].bitsPerPixel == 24)
{
imagebpp = 24;
break;
}
}
}
#endif
#ifdef FB_SCREEN_PRIVATE
if (imagebpp == 32)
{
fbGetScreenPrivate(pScreen)->win32bpp = bpp;
fbGetScreenPrivate(pScreen)->pix32bpp = bpp;
}
else
{
fbGetScreenPrivate(pScreen)->win32bpp = 32;
fbGetScreenPrivate(pScreen)->pix32bpp = 32;
}
#endif
rootdepth = 0;
if (!fbInitVisuals (&visuals, &depths, &nvisuals, &ndepths, &rootdepth,
&defaultVisual,((unsigned long)1<<(imagebpp-1)), 8))
return FALSE;
if (! miScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy, width,
rootdepth, ndepths, depths,
defaultVisual, nvisuals, visuals
#ifdef FB_OLD_SCREEN
, (miBSFuncPtr) 0
#endif
))
return FALSE;
/* overwrite miCloseScreen with our own */
pScreen->CloseScreen = fbCloseScreen;
#ifdef FB_24_32BIT
if (bpp == 24 && imagebpp == 32)
{
pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader;
pScreen->CreateScreenResources = fb24_32CreateScreenResources;
}
#endif
#if 0
/* leave backing store initialization to the enclosing code so
* it can choose the correct order of wrappers
*/
/* init backing store here so we can overwrite CloseScreen without stepping
* on the backing store wrapped version */
fbInitializeBackingStore (pScreen);
#endif
return TRUE;
}
/* dts * (inch/dot) * (25.4 mm / inch) = mm */
Bool
fbScreenInit(ScreenPtr pScreen,
pointer pbits,
int xsize,
int ysize,
int dpix,
int dpiy,
int width,
int bpp)
{
if (!fbSetupScreen(pScreen, pbits, xsize, ysize, dpix, dpiy, width, bpp))
return FALSE;
if (!fbFinishScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy,
width, bpp))
return FALSE;
return TRUE;
}
#ifdef FB_OLD_SCREEN
const miBSFuncRec fbBSFuncRec = {
fbSaveAreas,
fbRestoreAreas,
(void (*)(GCPtr, RegionPtr)) 0,
(PixmapPtr (*)(void)) 0,
(PixmapPtr (*)(void)) 0,
};
#endif
#if 0
void
fbInitializeBackingStore (ScreenPtr pScreen)
{
#ifdef FB_OLD_SCREEN
miInitializeBackingStore (pScreen, (miBSFuncRec *) &fbBSFuncRec);
#else
miInitializeBackingStore (pScreen);
#endif
}
#endif
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