105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/*
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Copyright 1990, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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/*
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* Author: Keith Packard, MIT X Consortium
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "fontmisc.h"
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#include <X11/fonts/fontstruct.h>
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#include "fontutil.h"
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void
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FontComputeInfoAccelerators(FontInfoPtr pFontInfo)
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{
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pFontInfo->noOverlap = FALSE;
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if (pFontInfo->maxOverlap <= pFontInfo->minbounds.leftSideBearing)
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pFontInfo->noOverlap = TRUE;
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if ((pFontInfo->minbounds.ascent == pFontInfo->maxbounds.ascent) &&
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(pFontInfo->minbounds.descent == pFontInfo->maxbounds.descent) &&
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(pFontInfo->minbounds.leftSideBearing ==
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pFontInfo->maxbounds.leftSideBearing) &&
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(pFontInfo->minbounds.rightSideBearing ==
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pFontInfo->maxbounds.rightSideBearing) &&
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(pFontInfo->minbounds.characterWidth ==
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pFontInfo->maxbounds.characterWidth) &&
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(pFontInfo->minbounds.attributes == pFontInfo->maxbounds.attributes)) {
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pFontInfo->constantMetrics = TRUE;
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if ((pFontInfo->maxbounds.leftSideBearing == 0) &&
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(pFontInfo->maxbounds.rightSideBearing ==
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pFontInfo->maxbounds.characterWidth) &&
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(pFontInfo->maxbounds.ascent == pFontInfo->fontAscent) &&
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(pFontInfo->maxbounds.descent == pFontInfo->fontDescent))
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pFontInfo->terminalFont = TRUE;
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else
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pFontInfo->terminalFont = FALSE;
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} else {
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pFontInfo->constantMetrics = FALSE;
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pFontInfo->terminalFont = FALSE;
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}
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if (pFontInfo->minbounds.characterWidth == pFontInfo->maxbounds.characterWidth)
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pFontInfo->constantWidth = TRUE;
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else
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pFontInfo->constantWidth = FALSE;
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if ((pFontInfo->minbounds.leftSideBearing >= 0) &&
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(pFontInfo->maxOverlap <= 0) &&
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(pFontInfo->minbounds.ascent >= -pFontInfo->fontDescent) &&
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(pFontInfo->maxbounds.ascent <= pFontInfo->fontAscent) &&
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(-pFontInfo->minbounds.descent <= pFontInfo->fontAscent) &&
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(pFontInfo->maxbounds.descent <= pFontInfo->fontDescent))
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pFontInfo->inkInside = TRUE;
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else
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pFontInfo->inkInside = FALSE;
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}
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int
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FontCouldBeTerminal(FontInfoPtr pFontInfo)
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{
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if ((pFontInfo->minbounds.leftSideBearing >= 0) &&
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(pFontInfo->maxbounds.rightSideBearing <= pFontInfo->maxbounds.characterWidth) &&
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(pFontInfo->minbounds.characterWidth == pFontInfo->maxbounds.characterWidth) &&
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(pFontInfo->maxbounds.ascent <= pFontInfo->fontAscent) &&
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(pFontInfo->maxbounds.descent <= pFontInfo->fontDescent) &&
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(pFontInfo->maxbounds.leftSideBearing != 0 ||
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pFontInfo->minbounds.rightSideBearing != pFontInfo->minbounds.characterWidth ||
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pFontInfo->minbounds.ascent != pFontInfo->fontAscent ||
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pFontInfo->minbounds.descent != pFontInfo->fontDescent)) {
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/* blow off font with nothing but a SPACE */
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if (pFontInfo->maxbounds.ascent == 0 &&
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pFontInfo->maxbounds.descent == 0)
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return FALSE;
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return TRUE;
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}
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return FALSE;
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}
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