Import X server from vnc-3.3.7.

[rdpsrv] / Xserver / lib / font / bitmap / bitmap.c

diff --git a/Xserver/lib/font/bitmap/bitmap.c b/Xserver/lib/font/bitmap/bitmap.c
new file mode 100644 (file)
index 0000000..3c80e41
--- /dev/null
+++ b/Xserver/lib/font/bitmap/bitmap.c
@@ -0,0 +1,167 @@
+/* $XConsortium: bitmap.c,v 1.5 94/04/17 20:17:11 gildea Exp $ */
+
+/*
+
+Copyright (c) 1991  X Consortium
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+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
+X CONSORTIUM 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 X Consortium 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 X Consortium.
+
+*/
+
+/*
+ * Author:  Keith Packard, MIT X Consortium
+ */
+
+#include "fntfilst.h"
+#include "bitmap.h"
+
+int         bitmapGetGlyphs(), bitmapGetMetrics();
+int         bitmapGetBitmaps(), bitmapGetExtents();
+void       bitmapComputeFontBounds ();
+void       bitmapComputeFontInkBounds ();
+
+int
+bitmapGetGlyphs(pFont, count, chars, charEncoding, glyphCount, glyphs)
+    FontPtr     pFont;
+    unsigned long count;
+    register unsigned char *chars;
+    FontEncoding charEncoding;
+    unsigned long *glyphCount; /* RETURN */
+    CharInfoPtr *glyphs;       /* RETURN */
+{
+    BitmapFontPtr  bitmapFont;
+    unsigned int firstCol;
+    register unsigned int numCols;
+    unsigned int firstRow;
+    unsigned int numRows;
+    CharInfoPtr *glyphsBase;
+    register unsigned int c;
+    register CharInfoPtr pci;
+    unsigned int r;
+    CharInfoPtr *encoding;
+    CharInfoPtr pDefault;
+
+    bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
+    encoding = bitmapFont->encoding;
+    pDefault = bitmapFont->pDefault;
+    firstCol = pFont->info.firstCol;
+    numCols = pFont->info.lastCol - firstCol + 1;
+    glyphsBase = glyphs;
+    switch (charEncoding) {
+
+    case Linear8Bit:
+    case TwoD8Bit:
+       if (pFont->info.firstRow > 0)
+           break;
+       if (pFont->info.allExist && pDefault) {
+           while (count--) {
+               c = (*chars++) - firstCol;
+               if (c < numCols)
+                   *glyphs++ = encoding[c];
+               else
+                   *glyphs++ = pDefault;
+           }
+       } else {
+           while (count--) {
+               c = (*chars++) - firstCol;
+               if (c < numCols && (pci = encoding[c]))
+                   *glyphs++ = pci;
+               else if (pDefault)
+                   *glyphs++ = pDefault;
+           }
+       }
+       break;
+    case Linear16Bit:
+       if (pFont->info.allExist && pDefault) {
+           while (count--) {
+               c = *chars++ << 8;
+               c = (c | *chars++) - firstCol;
+               if (c < numCols)
+                   *glyphs++ = encoding[c];
+               else
+                   *glyphs++ = pDefault;
+           }
+       } else {
+           while (count--) {
+               c = *chars++ << 8;
+               c = (c | *chars++) - firstCol;
+               if (c < numCols && (pci = encoding[c]))
+                   *glyphs++ = pci;
+               else if (pDefault)
+                   *glyphs++ = pDefault;
+           }
+       }
+       break;
+
+    case TwoD16Bit:
+       firstRow = pFont->info.firstRow;
+       numRows = pFont->info.lastRow - firstRow + 1;
+       while (count--) {
+           r = (*chars++) - firstRow;
+           c = (*chars++) - firstCol;
+           if (r < numRows && c < numCols &&
+                   (pci = encoding[r * numCols + c]))
+               *glyphs++ = pci;
+           else if (pDefault)
+               *glyphs++ = pDefault;
+       }
+       break;
+    }
+    *glyphCount = glyphs - glyphsBase;
+    return Successful;
+}
+
+static CharInfoRec nonExistantChar;
+
+int
+bitmapGetMetrics(pFont, count, chars, charEncoding, glyphCount, glyphs)
+    FontPtr     pFont;
+    unsigned long count;
+    register unsigned char *chars;
+    FontEncoding charEncoding;
+    unsigned long *glyphCount; /* RETURN */
+    xCharInfo **glyphs;                /* RETURN */
+{
+    int         ret;
+    xCharInfo  *ink_metrics;
+    CharInfoPtr metrics;
+    BitmapFontPtr  bitmapFont;
+    CharInfoPtr        oldDefault;
+    int         i;
+
+    bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
+    oldDefault = bitmapFont->pDefault;
+    bitmapFont->pDefault = &nonExistantChar;
+    ret = bitmapGetGlyphs(pFont, count, chars, charEncoding, glyphCount, (CharInfoPtr *) glyphs);
+    if (ret == Successful) {
+       if (bitmapFont->ink_metrics) {
+           metrics = bitmapFont->metrics;
+           ink_metrics = bitmapFont->ink_metrics;
+           for (i = 0; i < *glyphCount; i++) {
+               if (glyphs[i] != (xCharInfo *) & nonExistantChar)
+                   glyphs[i] = ink_metrics + (((CharInfoPtr) glyphs[i]) - metrics);
+           }
+       }
+    }
+    bitmapFont->pDefault = oldDefault;
+    return ret;
+}