diff options
Diffstat (limited to 'libXfont/src/util/fontaccel.c')
| -rw-r--r-- | libXfont/src/util/fontaccel.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/libXfont/src/util/fontaccel.c b/libXfont/src/util/fontaccel.c new file mode 100644 index 000000000..c37f69a39 --- /dev/null +++ b/libXfont/src/util/fontaccel.c @@ -0,0 +1,107 @@ +/* $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. + +*/ +/* $XFree86: xc/lib/font/util/fontaccel.c,v 1.6 2001/01/17 19:43:33 dawes Exp $ */ + +/* + * Author: Keith Packard, MIT X Consortium + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <X11/fonts/fontmisc.h> +#include <X11/fonts/fontstruct.h> +#include <X11/fonts/fontutil.h> + +void +FontComputeInfoAccelerators(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(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; +} |