Initial revision

1 files changed, 297 insertions, 0 deletions

diff --git a/fb/fbscreen.c b/fb/fbscreen.c
new file mode 100644
index 000000000..bdcc9d139
--- /dev/null
+++ b/fb/fbscreen.c
@@ -0,0 +1,297 @@
+/*
+ * 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 1.13 2001/05/29 04:54:09 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;
+	}
+    }
+}
+
+#ifndef FB_OLD_SCREEN
+PixmapPtr
+_fbGetWindowPixmap (WindowPtr pWindow)
+{
+    return fbGetWindowPixmap (pWindow);
+}
+
+void
+_fbSetWindowPixmap (WindowPtr pWindow, PixmapPtr pPixmap)
+{
+#ifdef FB_NO_WINDOW_PIXMAPS
+    FatalError ("Attempted to set window pixmap without fb support\n");
+#else
+    pWindow->devPrivates[fbWinPrivateIndex].ptr = (pointer) pPixmap;
+#endif
+}
+#endif
+
+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->GetWindowPixmap = _fbGetWindowPixmap;
+    pScreen->SetWindowPixmap = _fbSetWindowPixmap;
+
+    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