1 files changed, 102 insertions, 0 deletions
diff --git a/src/util/fontaccel.c b/src/util/fontaccel.c
new file mode 100644
index 0000000..b0e8b57
--- /dev/null
+++ b/src/util/fontaccel.c
@@ -0,0 +1,102 @@
+/* $Xorg: fontaccel.c,v 1.4 2001/02/09 02:04:04 xorgcvs Exp $ */
+
+/*
+
+Copyright 1990, 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.
+
+*/
+
+/*
+ * Author:  Keith Packard, MIT X Consortium
+ */
+
+#include    "fontmisc.h"
+#include    "fontstruct.h"
+
+void FontComputeInfoAccelerators(pFontInfo)
+    FontInfoPtr pFontInfo;
+{
+    pFontInfo->noOverlap = FALSE;
+    if (pFontInfo->maxOverlap <= pFontInfo->minbounds.leftSideBearing)
+	pFontInfo->noOverlap = TRUE;
+
+    if ((pFontInfo->minbounds.ascent == pFontInfo->maxbounds.ascent) &&
+	    (pFontInfo->minbounds.descent == pFontInfo->maxbounds.descent) &&
+	    (pFontInfo->minbounds.leftSideBearing ==
+	     pFontInfo->maxbounds.leftSideBearing) &&
+	    (pFontInfo->minbounds.rightSideBearing ==
+	     pFontInfo->maxbounds.rightSideBearing) &&
+	    (pFontInfo->minbounds.characterWidth ==
+	     pFontInfo->maxbounds.characterWidth) &&
+      (pFontInfo->minbounds.attributes == pFontInfo->maxbounds.attributes)) {
+	pFontInfo->constantMetrics = TRUE;
+	if ((pFontInfo->maxbounds.leftSideBearing == 0) &&
+		(pFontInfo->maxbounds.rightSideBearing ==
+		 pFontInfo->maxbounds.characterWidth) &&
+		(pFontInfo->maxbounds.ascent == pFontInfo->fontAscent) &&
+		(pFontInfo->maxbounds.descent == pFontInfo->fontDescent))
+	    pFontInfo->terminalFont = TRUE;
+	else
+	    pFontInfo->terminalFont = FALSE;
+    } else {
+	pFontInfo->constantMetrics = FALSE;
+	pFontInfo->terminalFont = FALSE;
+    }
+    if (pFontInfo->minbounds.characterWidth == pFontInfo->maxbounds.characterWidth)
+	pFontInfo->constantWidth = TRUE;
+    else
+	pFontInfo->constantWidth = FALSE;
+
+    if ((pFontInfo->minbounds.leftSideBearing >= 0) &&
+	    (pFontInfo->maxOverlap <= 0) &&
+	    (pFontInfo->minbounds.ascent >= -pFontInfo->fontDescent) &&
+	    (pFontInfo->maxbounds.ascent <= pFontInfo->fontAscent) &&
+	    (-pFontInfo->minbounds.descent <= pFontInfo->fontAscent) &&
+	    (pFontInfo->maxbounds.descent <= pFontInfo->fontDescent))
+	pFontInfo->inkInside = TRUE;
+    else
+	pFontInfo->inkInside = FALSE;
+}
+
+int FontCouldBeTerminal(pFontInfo)
+    FontInfoPtr pFontInfo;
+{
+    if ((pFontInfo->minbounds.leftSideBearing >= 0) &&
+	    (pFontInfo->maxbounds.rightSideBearing <= pFontInfo->maxbounds.characterWidth) &&
+	    (pFontInfo->minbounds.characterWidth == pFontInfo->maxbounds.characterWidth) &&
+	    (pFontInfo->maxbounds.ascent <= pFontInfo->fontAscent) &&
+	    (pFontInfo->maxbounds.descent <= pFontInfo->fontDescent) &&
+	    (pFontInfo->maxbounds.leftSideBearing != 0 ||
+	     pFontInfo->minbounds.rightSideBearing != pFontInfo->minbounds.characterWidth ||
+	     pFontInfo->minbounds.ascent != pFontInfo->fontAscent ||
+	     pFontInfo->minbounds.descent != pFontInfo->fontDescent)) {
+	/* blow off font with nothing but a SPACE */
+	if (pFontInfo->maxbounds.ascent == 0 && 
+	    pFontInfo->maxbounds.descent == 0)
+		return FALSE;
+	return TRUE;
+    }
+    return FALSE;
+}