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Bugzilla Bug 290292 [Postscript] Text will beyond the end of table cell when printing or previewing in xft enabled mozilla.

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Patch by leon.sha@sun.com
jshin1987: review+
bzbarsky: superreview+
This commit is contained in:
leon.sha%sun.com 2005-04-25 05:19:27 +00:00
parent c878dc45cc
commit b0afb7c7d3
1 changed files with 9 additions and 16 deletions
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25
gfx/src/ps/nsFontMetricsPS.cpp
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@ -1068,10 +1068,6 @@ nsFontPSXft::GetWidth(const char* aString, PRUint32 aLength)
nscoord
nsFontPSXft::GetWidth(const PRUnichar* aString, PRUint32 aLength)
{
FT_UInt glyph_index;
FT_Glyph glyph;
double origin_x = 0;
// get the face/size from the FreeType cache
FT_Face face = getFTFace();
NS_ASSERTION(face, "failed to get face/size");
@ -1079,15 +1075,15 @@ nsFontPSXft::GetWidth(const PRUnichar* aString, PRUint32 aLength)
return 0;
// XXX : we might need some caching here
double em_size = 1.0 * face->units_per_EM;
double x_scale = face->size->metrics.x_ppem / em_size;
double origin_x = 0;
for (PRUint32 i=0; i<aLength; i++) {
glyph_index = FT_Get_Char_Index((FT_Face)face, aString[i]);
if (FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT) ||
FT_Get_Glyph(face->glyph, &glyph)) {
origin_x += FT_REG_TO_16_16(face->size->metrics.x_ppem/2 + 2);
continue;
}
origin_x += glyph->advance.x;
FT_Done_Glyph(glyph);
FT_UInt glyph_index = FT_Get_Char_Index((FT_Face)face, aString[i]);
if (FT_Load_Glyph(face, glyph_index, FT_LOAD_NO_SCALE ))
origin_x += face->size->metrics.x_ppem/2 + 2;
else
origin_x += (face->glyph->advance.x) * x_scale;
}
NS_ENSURE_TRUE(mFontMetrics, 0);
@ -1095,10 +1091,7 @@ nsFontPSXft::GetWidth(const PRUnichar* aString, PRUint32 aLength)
nsDeviceContextPS* dc = mFontMetrics->GetDeviceContext();
NS_ENSURE_TRUE(dc, 0);
float dev2app;
dev2app = dc->DevUnitsToAppUnits();
origin_x *= dev2app;
origin_x /= FT_REG_TO_16_16(1);
origin_x *= dc->DevUnitsToAppUnits();
return NSToCoordRound((nscoord)origin_x);
}