Importing xserver from X.Org 7.2RC2

1 files changed, 193 insertions, 0 deletions

diff --git a/xserver/dix/glyphcurs.c b/xserver/dix/glyphcurs.c
new file mode 100644
index 000000000..c1c545fa9
--- /dev/null
+++ b/xserver/dix/glyphcurs.c
@@ -0,0 +1,193 @@
+/************************************************************************
+
+Copyright 1987, 1998  The Open Group
+
+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.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+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 Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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.
+
+************************************************************************/
+
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "misc.h"
+#include <X11/fonts/fontstruct.h>
+#include "dixfontstr.h"
+#include "scrnintstr.h"
+#include "gcstruct.h"
+#include "resource.h"
+#include "dix.h"
+#include "cursorstr.h"
+#include "opaque.h"
+#include "servermd.h"
+
+
+/*
+    get the bits out of the font in a portable way.  to avoid
+dealing with padding and such-like, we draw the glyph into
+a bitmap, then read the bits out with GetImage, which
+uses server-natural format.
+    since all screens return the same bitmap format, we'll just use
+the first one we find.
+    the character origin lines up with the hotspot in the
+cursor metrics.
+*/
+
+int
+ServerBitsFromGlyph(FontPtr pfont, unsigned ch, register CursorMetricPtr cm, unsigned char **ppbits)
+{
+    register ScreenPtr pScreen;
+    register GCPtr pGC;
+    xRectangle rect;
+    PixmapPtr ppix;
+    long nby;
+    char *pbits;
+    ChangeGCVal gcval[3];
+    unsigned char char2b[2];
+
+    /* turn glyph index into a protocol-format char2b */
+    char2b[0] = (unsigned char)(ch >> 8);
+    char2b[1] = (unsigned char)(ch & 0xff);
+
+    pScreen = screenInfo.screens[0];
+    nby = BitmapBytePad(cm->width) * (long)cm->height;
+    pbits = (char *)xalloc(nby);
+    if (!pbits)
+	return BadAlloc;
+    /* zeroing the (pad) bits seems to help some ddx cursor handling */
+    bzero(pbits, nby);
+
+    ppix = (PixmapPtr)(*pScreen->CreatePixmap)(pScreen, cm->width,
+					       cm->height, 1);
+    pGC = GetScratchGC(1, pScreen);
+    if (!ppix || !pGC)
+    {
+	if (ppix)
+	    (*pScreen->DestroyPixmap)(ppix);
+	if (pGC)
+	    FreeScratchGC(pGC);
+	xfree(pbits);
+	return BadAlloc;
+    }
+
+    rect.x = 0;
+    rect.y = 0;
+    rect.width = cm->width;
+    rect.height = cm->height;
+
+    /* fill the pixmap with 0 */
+    gcval[0].val = GXcopy;
+    gcval[1].val = 0;
+    gcval[2].ptr = (pointer)pfont;
+    dixChangeGC(NullClient, pGC, GCFunction | GCForeground | GCFont,
+		NULL, gcval);
+    ValidateGC((DrawablePtr)ppix, pGC);
+    (*pGC->ops->PolyFillRect)((DrawablePtr)ppix, pGC, 1, &rect);
+
+    /* draw the glyph */
+    gcval[0].val = 1;
+    dixChangeGC(NullClient, pGC, GCForeground, NULL, gcval);
+    ValidateGC((DrawablePtr)ppix, pGC);
+    (*pGC->ops->PolyText16)((DrawablePtr)ppix, pGC, cm->xhot, cm->yhot,
+			    1, (unsigned short *)char2b);
+    (*pScreen->GetImage)((DrawablePtr)ppix, 0, 0, cm->width, cm->height,
+			 XYPixmap, 1, pbits);
+    *ppbits = (unsigned char *)pbits;
+    FreeScratchGC(pGC);
+    (*pScreen->DestroyPixmap)(ppix);
+    return Success;
+}
+
+
+Bool
+CursorMetricsFromGlyph(register FontPtr pfont, unsigned ch, register CursorMetricPtr cm)
+{
+    CharInfoPtr 	pci;
+    unsigned long	nglyphs;
+    CARD8		chs[2];
+    FontEncoding	encoding;
+
+    chs[0] = ch >> 8;
+    chs[1] = ch;
+    encoding = (FONTLASTROW(pfont) == 0) ? Linear16Bit : TwoD16Bit;
+    if (encoding == Linear16Bit)
+    {
+	if (ch < pfont->info.firstCol || pfont->info.lastCol < ch)
+	    return FALSE;
+    }
+    else
+    {
+	if (chs[0] < pfont->info.firstRow || pfont->info.lastRow < chs[0])
+	    return FALSE;
+	if (chs[1] < pfont->info.firstCol || pfont->info.lastCol < chs[1])
+	    return FALSE;
+    }
+    (*pfont->get_glyphs) (pfont, 1, chs, encoding, &nglyphs, &pci);
+    if (nglyphs == 0)
+	return FALSE;
+    cm->width = pci->metrics.rightSideBearing - pci->metrics.leftSideBearing;
+    cm->height = pci->metrics.descent + pci->metrics.ascent;
+    if (pci->metrics.leftSideBearing > 0)
+    {
+	cm->width += pci->metrics.leftSideBearing;
+	cm->xhot = 0;
+    }
+    else
+    {
+	cm->xhot = -pci->metrics.leftSideBearing;
+	if (pci->metrics.rightSideBearing < 0)
+	    cm->width -= pci->metrics.rightSideBearing;
+    }
+    if (pci->metrics.ascent < 0)
+    {
+	cm->height -= pci->metrics.ascent;
+	cm->yhot = 0;
+    }
+    else
+    {
+	cm->yhot = pci->metrics.ascent;
+	if (pci->metrics.descent < 0)
+	    cm->height -= pci->metrics.descent;
+    }
+    return TRUE;
+}