If the buffer passed to GetOutlineTextMetrics isn't big enough then
Windows fills it upto the supplied size rather than returning an error.
This commit is contained in:
Huw Davies
Alexandre Julliard
parent
bec6cfe0d0
commit
39f604b04f
191
objects/font.c
191
objects/font.c
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@ -324,7 +324,7 @@ HFONT WINAPI CreateFontIndirectW( const LOGFONTW *plf )
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memcpy( &fontPtr->logfont, plf, sizeof(LOGFONTW) );
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TRACE("(%ld %ld %ld %ld %x %d %x %d %d) %s %s %s => %p\n",
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TRACE("(%ld %ld %ld %ld %x %d %x %d %d) %s %s %s %s => %p\n",
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plf->lfHeight, plf->lfWidth,
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plf->lfEscapement, plf->lfOrientation,
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plf->lfPitchAndFamily,
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@ -332,7 +332,8 @@ HFONT WINAPI CreateFontIndirectW( const LOGFONTW *plf )
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plf->lfQuality, plf->lfCharSet,
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debugstr_w(plf->lfFaceName),
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plf->lfWeight > 400 ? "Bold" : "",
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plf->lfItalic ? "Italic" : "", hFont);
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plf->lfItalic ? "Italic" : "",
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plf->lfUnderline ? "Underline" : "", hFont);
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if (plf->lfEscapement != plf->lfOrientation) {
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/* this should really depend on whether GM_ADVANCED is set */
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@ -1229,6 +1230,9 @@ UINT16 WINAPI GetOutlineTextMetrics16(
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* GetOutlineTextMetricsA (GDI32.@)
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* Gets metrics for TrueType fonts.
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*
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* NOTES
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* If the supplied buffer isn't big enough Windows partially fills it up to
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* its given length and returns that length.
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*
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* RETURNS
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* Success: Non-zero or size of required buffer
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@ -1242,14 +1246,14 @@ UINT WINAPI GetOutlineTextMetricsA(
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char buf[512], *ptr;
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UINT ret, needed;
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OUTLINETEXTMETRICW *lpOTMW = (OUTLINETEXTMETRICW *)buf;
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OUTLINETEXTMETRICA *output = lpOTM;
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INT left, len;
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if((ret = GetOutlineTextMetricsW(hdc, sizeof(buf), lpOTMW)) == 0) {
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if((ret = GetOutlineTextMetricsW(hdc, 0, NULL)) == 0)
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return 0;
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if((ret = GetOutlineTextMetricsW(hdc, 0, NULL)) == 0)
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return 0;
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if(ret > sizeof(buf))
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lpOTMW = HeapAlloc(GetProcessHeap(), 0, ret);
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GetOutlineTextMetricsW(hdc, ret, lpOTMW);
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}
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GetOutlineTextMetricsW(hdc, ret, lpOTMW);
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needed = sizeof(OUTLINETEXTMETRICA);
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if(lpOTMW->otmpFamilyName)
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@ -1274,87 +1278,91 @@ UINT WINAPI GetOutlineTextMetricsA(
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goto end;
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}
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if(needed > cbData) {
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ret = 0;
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goto end;
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}
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TRACE("needed = %d\n", needed);
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if(needed > cbData)
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/* Since the supplied buffer isn't big enough, we'll alloc one
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that is and memcpy the first cbData bytes into the lpOTM at
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the end. */
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output = HeapAlloc(GetProcessHeap(), 0, needed);
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ret = output->otmSize = min(needed, cbData);
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FONT_TextMetricWToA( &lpOTMW->otmTextMetrics, &output->otmTextMetrics );
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output->otmFiller = 0;
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output->otmPanoseNumber = lpOTMW->otmPanoseNumber;
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output->otmfsSelection = lpOTMW->otmfsSelection;
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output->otmfsType = lpOTMW->otmfsType;
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output->otmsCharSlopeRise = lpOTMW->otmsCharSlopeRise;
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output->otmsCharSlopeRun = lpOTMW->otmsCharSlopeRun;
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output->otmItalicAngle = lpOTMW->otmItalicAngle;
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output->otmEMSquare = lpOTMW->otmEMSquare;
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output->otmAscent = lpOTMW->otmAscent;
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output->otmDescent = lpOTMW->otmDescent;
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output->otmLineGap = lpOTMW->otmLineGap;
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output->otmsCapEmHeight = lpOTMW->otmsCapEmHeight;
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output->otmsXHeight = lpOTMW->otmsXHeight;
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output->otmrcFontBox = lpOTMW->otmrcFontBox;
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output->otmMacAscent = lpOTMW->otmMacAscent;
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output->otmMacDescent = lpOTMW->otmMacDescent;
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output->otmMacLineGap = lpOTMW->otmMacLineGap;
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output->otmusMinimumPPEM = lpOTMW->otmusMinimumPPEM;
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output->otmptSubscriptSize = lpOTMW->otmptSubscriptSize;
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output->otmptSubscriptOffset = lpOTMW->otmptSubscriptOffset;
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output->otmptSuperscriptSize = lpOTMW->otmptSuperscriptSize;
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output->otmptSuperscriptOffset = lpOTMW->otmptSuperscriptOffset;
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output->otmsStrikeoutSize = lpOTMW->otmsStrikeoutSize;
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output->otmsStrikeoutPosition = lpOTMW->otmsStrikeoutPosition;
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output->otmsUnderscoreSize = lpOTMW->otmsUnderscoreSize;
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output->otmsUnderscorePosition = lpOTMW->otmsUnderscorePosition;
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lpOTM->otmSize = needed;
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FONT_TextMetricWToA( &lpOTMW->otmTextMetrics, &lpOTM->otmTextMetrics );
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lpOTM->otmFiller = 0;
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lpOTM->otmPanoseNumber = lpOTMW->otmPanoseNumber;
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lpOTM->otmfsSelection = lpOTMW->otmfsSelection;
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lpOTM->otmfsType = lpOTMW->otmfsType;
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lpOTM->otmsCharSlopeRise = lpOTMW->otmsCharSlopeRise;
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lpOTM->otmsCharSlopeRun = lpOTMW->otmsCharSlopeRun;
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lpOTM->otmItalicAngle = lpOTMW->otmItalicAngle;
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lpOTM->otmEMSquare = lpOTMW->otmEMSquare;
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lpOTM->otmAscent = lpOTMW->otmAscent;
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lpOTM->otmDescent = lpOTMW->otmDescent;
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lpOTM->otmLineGap = lpOTMW->otmLineGap;
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lpOTM->otmsCapEmHeight = lpOTMW->otmsCapEmHeight;
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lpOTM->otmsXHeight = lpOTMW->otmsXHeight;
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lpOTM->otmrcFontBox = lpOTMW->otmrcFontBox;
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lpOTM->otmMacAscent = lpOTMW->otmMacAscent;
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lpOTM->otmMacDescent = lpOTMW->otmMacDescent;
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lpOTM->otmMacLineGap = lpOTMW->otmMacLineGap;
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lpOTM->otmusMinimumPPEM = lpOTMW->otmusMinimumPPEM;
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lpOTM->otmptSubscriptSize = lpOTMW->otmptSubscriptSize;
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lpOTM->otmptSubscriptOffset = lpOTMW->otmptSubscriptOffset;
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lpOTM->otmptSuperscriptSize = lpOTMW->otmptSuperscriptSize;
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lpOTM->otmptSuperscriptOffset = lpOTMW->otmptSuperscriptOffset;
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lpOTM->otmsStrikeoutSize = lpOTMW->otmsStrikeoutSize;
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lpOTM->otmsStrikeoutPosition = lpOTMW->otmsStrikeoutPosition;
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lpOTM->otmsUnderscoreSize = lpOTMW->otmsUnderscoreSize;
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lpOTM->otmsUnderscorePosition = lpOTMW->otmsUnderscorePosition;
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ptr = (char*)(lpOTM + 1);
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left = needed - sizeof(*lpOTM);
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ptr = (char*)(output + 1);
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left = needed - sizeof(*output);
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if(lpOTMW->otmpFamilyName) {
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lpOTM->otmpFamilyName = (LPSTR)(ptr - (char*)lpOTM);
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output->otmpFamilyName = (LPSTR)(ptr - (char*)output);
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len = WideCharToMultiByte(CP_ACP, 0,
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(WCHAR*)((char*)lpOTMW + (ptrdiff_t)lpOTMW->otmpFamilyName), -1,
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ptr, left, NULL, NULL);
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left -= len;
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ptr += len;
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} else
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lpOTM->otmpFamilyName = 0;
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output->otmpFamilyName = 0;
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if(lpOTMW->otmpFaceName) {
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lpOTM->otmpFaceName = (LPSTR)(ptr - (char*)lpOTM);
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output->otmpFaceName = (LPSTR)(ptr - (char*)output);
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len = WideCharToMultiByte(CP_ACP, 0,
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(WCHAR*)((char*)lpOTMW + (ptrdiff_t)lpOTMW->otmpFaceName), -1,
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ptr, left, NULL, NULL);
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left -= len;
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ptr += len;
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} else
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lpOTM->otmpFaceName = 0;
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output->otmpFaceName = 0;
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if(lpOTMW->otmpStyleName) {
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lpOTM->otmpStyleName = (LPSTR)(ptr - (char*)lpOTM);
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output->otmpStyleName = (LPSTR)(ptr - (char*)output);
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len = WideCharToMultiByte(CP_ACP, 0,
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(WCHAR*)((char*)lpOTMW + (ptrdiff_t)lpOTMW->otmpStyleName), -1,
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ptr, left, NULL, NULL);
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left -= len;
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ptr += len;
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} else
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lpOTM->otmpStyleName = 0;
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output->otmpStyleName = 0;
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if(lpOTMW->otmpFullName) {
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lpOTM->otmpFullName = (LPSTR)(ptr - (char*)lpOTM);
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output->otmpFullName = (LPSTR)(ptr - (char*)output);
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len = WideCharToMultiByte(CP_ACP, 0,
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(WCHAR*)((char*)lpOTMW + (ptrdiff_t)lpOTMW->otmpFullName), -1,
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ptr, left, NULL, NULL);
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left -= len;
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} else
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lpOTM->otmpFullName = 0;
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output->otmpFullName = 0;
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assert(left == 0);
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ret = needed;
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if(output != lpOTM) {
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memcpy(lpOTM, output, cbData);
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HeapFree(GetProcessHeap(), 0, output);
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}
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end:
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if(lpOTMW != (OUTLINETEXTMETRICW *)buf)
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@ -1373,14 +1381,20 @@ UINT WINAPI GetOutlineTextMetricsW(
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LPOUTLINETEXTMETRICW lpOTM) /* [out] Address of metric data array */
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{
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DC *dc = DC_GetDCPtr( hdc );
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OUTLINETEXTMETRICW *output = lpOTM;
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UINT ret;
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TRACE("(%p,%d,%p)\n", hdc, cbData, lpOTM);
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if(!dc) return 0;
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if(dc->gdiFont) {
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ret = WineEngGetOutlineTextMetrics(dc->gdiFont, cbData, lpOTM);
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if(ret && ret <= cbData) {
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ret = WineEngGetOutlineTextMetrics(dc->gdiFont, cbData, output);
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if(lpOTM && ret) {
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if(ret > cbData) {
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output = HeapAlloc(GetProcessHeap(), 0, ret);
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WineEngGetOutlineTextMetrics(dc->gdiFont, ret, output);
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}
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#define WDPTOLP(x) ((x<0)? \
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(-abs(INTERNAL_XDSTOWS(dc, (x)))): \
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(abs(INTERNAL_XDSTOWS(dc, (x)))))
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@ -1388,40 +1402,45 @@ UINT WINAPI GetOutlineTextMetricsW(
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(-abs(INTERNAL_YDSTOWS(dc, (y)))): \
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(abs(INTERNAL_YDSTOWS(dc, (y)))))
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lpOTM->otmTextMetrics.tmHeight = HDPTOLP(lpOTM->otmTextMetrics.tmHeight);
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lpOTM->otmTextMetrics.tmAscent = HDPTOLP(lpOTM->otmTextMetrics.tmAscent);
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lpOTM->otmTextMetrics.tmDescent = HDPTOLP(lpOTM->otmTextMetrics.tmDescent);
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lpOTM->otmTextMetrics.tmInternalLeading = HDPTOLP(lpOTM->otmTextMetrics.tmInternalLeading);
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lpOTM->otmTextMetrics.tmExternalLeading = HDPTOLP(lpOTM->otmTextMetrics.tmExternalLeading);
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lpOTM->otmTextMetrics.tmAveCharWidth = WDPTOLP(lpOTM->otmTextMetrics.tmAveCharWidth);
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lpOTM->otmTextMetrics.tmMaxCharWidth = WDPTOLP(lpOTM->otmTextMetrics.tmMaxCharWidth);
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lpOTM->otmTextMetrics.tmOverhang = WDPTOLP(lpOTM->otmTextMetrics.tmOverhang);
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lpOTM->otmAscent = HDPTOLP(lpOTM->otmAscent);
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lpOTM->otmDescent = HDPTOLP(lpOTM->otmDescent);
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lpOTM->otmLineGap = HDPTOLP(lpOTM->otmLineGap);
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lpOTM->otmsCapEmHeight = HDPTOLP(lpOTM->otmsCapEmHeight);
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lpOTM->otmsXHeight = HDPTOLP(lpOTM->otmsXHeight);
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lpOTM->otmrcFontBox.top = HDPTOLP(lpOTM->otmrcFontBox.top);
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lpOTM->otmrcFontBox.bottom = HDPTOLP(lpOTM->otmrcFontBox.bottom);
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lpOTM->otmrcFontBox.left = WDPTOLP(lpOTM->otmrcFontBox.left);
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lpOTM->otmrcFontBox.right = WDPTOLP(lpOTM->otmrcFontBox.right);
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lpOTM->otmMacAscent = HDPTOLP(lpOTM->otmMacAscent);
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lpOTM->otmMacDescent = HDPTOLP(lpOTM->otmMacDescent);
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lpOTM->otmMacLineGap = HDPTOLP(lpOTM->otmMacLineGap);
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lpOTM->otmptSubscriptSize.x = WDPTOLP(lpOTM->otmptSubscriptSize.x);
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lpOTM->otmptSubscriptSize.y = HDPTOLP(lpOTM->otmptSubscriptSize.y);
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lpOTM->otmptSubscriptOffset.x = WDPTOLP(lpOTM->otmptSubscriptOffset.x);
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lpOTM->otmptSubscriptOffset.y = HDPTOLP(lpOTM->otmptSubscriptOffset.y);
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lpOTM->otmptSuperscriptSize.x = WDPTOLP(lpOTM->otmptSuperscriptSize.x);
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lpOTM->otmptSuperscriptSize.y = HDPTOLP(lpOTM->otmptSuperscriptSize.y);
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lpOTM->otmptSuperscriptOffset.x = WDPTOLP(lpOTM->otmptSuperscriptOffset.x);
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lpOTM->otmptSuperscriptOffset.y = HDPTOLP(lpOTM->otmptSuperscriptOffset.y);
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lpOTM->otmsStrikeoutSize = HDPTOLP(lpOTM->otmsStrikeoutSize);
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lpOTM->otmsStrikeoutPosition = HDPTOLP(lpOTM->otmsStrikeoutPosition);
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lpOTM->otmsUnderscoreSize = HDPTOLP(lpOTM->otmsUnderscoreSize);
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lpOTM->otmsUnderscorePosition = HDPTOLP(lpOTM->otmsUnderscorePosition);
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output->otmTextMetrics.tmHeight = HDPTOLP(output->otmTextMetrics.tmHeight);
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output->otmTextMetrics.tmAscent = HDPTOLP(output->otmTextMetrics.tmAscent);
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output->otmTextMetrics.tmDescent = HDPTOLP(output->otmTextMetrics.tmDescent);
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output->otmTextMetrics.tmInternalLeading = HDPTOLP(output->otmTextMetrics.tmInternalLeading);
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output->otmTextMetrics.tmExternalLeading = HDPTOLP(output->otmTextMetrics.tmExternalLeading);
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output->otmTextMetrics.tmAveCharWidth = WDPTOLP(output->otmTextMetrics.tmAveCharWidth);
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output->otmTextMetrics.tmMaxCharWidth = WDPTOLP(output->otmTextMetrics.tmMaxCharWidth);
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output->otmTextMetrics.tmOverhang = WDPTOLP(output->otmTextMetrics.tmOverhang);
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output->otmAscent = HDPTOLP(output->otmAscent);
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output->otmDescent = HDPTOLP(output->otmDescent);
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output->otmLineGap = HDPTOLP(output->otmLineGap);
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output->otmsCapEmHeight = HDPTOLP(output->otmsCapEmHeight);
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output->otmsXHeight = HDPTOLP(output->otmsXHeight);
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output->otmrcFontBox.top = HDPTOLP(output->otmrcFontBox.top);
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output->otmrcFontBox.bottom = HDPTOLP(output->otmrcFontBox.bottom);
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output->otmrcFontBox.left = WDPTOLP(output->otmrcFontBox.left);
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output->otmrcFontBox.right = WDPTOLP(output->otmrcFontBox.right);
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output->otmMacAscent = HDPTOLP(output->otmMacAscent);
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output->otmMacDescent = HDPTOLP(output->otmMacDescent);
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output->otmMacLineGap = HDPTOLP(output->otmMacLineGap);
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output->otmptSubscriptSize.x = WDPTOLP(output->otmptSubscriptSize.x);
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output->otmptSubscriptSize.y = HDPTOLP(output->otmptSubscriptSize.y);
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output->otmptSubscriptOffset.x = WDPTOLP(output->otmptSubscriptOffset.x);
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output->otmptSubscriptOffset.y = HDPTOLP(output->otmptSubscriptOffset.y);
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output->otmptSuperscriptSize.x = WDPTOLP(output->otmptSuperscriptSize.x);
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output->otmptSuperscriptSize.y = HDPTOLP(output->otmptSuperscriptSize.y);
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output->otmptSuperscriptOffset.x = WDPTOLP(output->otmptSuperscriptOffset.x);
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output->otmptSuperscriptOffset.y = HDPTOLP(output->otmptSuperscriptOffset.y);
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output->otmsStrikeoutSize = HDPTOLP(output->otmsStrikeoutSize);
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output->otmsStrikeoutPosition = HDPTOLP(output->otmsStrikeoutPosition);
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output->otmsUnderscoreSize = HDPTOLP(output->otmsUnderscoreSize);
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output->otmsUnderscorePosition = HDPTOLP(output->otmsUnderscorePosition);
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#undef WDPTOLP
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#undef HDPTOLP
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if(output != lpOTM) {
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memcpy(lpOTM, output, cbData);
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HeapFree(GetProcessHeap(), 0, output);
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ret = cbData;
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}
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}
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}
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