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Just get glyph widths rather than the entire glyph when calculating sizes.

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This should be faster but isn't (probably still rendering the glyph
internally)

svn path=/trunk/netsurf/; revision=13843
This commit is contained in:
Chris Young 2012-04-09 12:01:57 +00:00
parent f13f2468b1
commit 65b128b088
1 changed files with 49 additions and 11 deletions
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60
amiga/font.c
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@ -78,6 +78,8 @@ ULONG ami_xdpi;
int32 ami_font_plot_glyph(struct OutlineFont *ofont, struct RastPort *rp,
uint16 char1, uint16 char2, uint32 x, uint32 y, uint32 emwidth);
int32 ami_font_width_glyph(struct OutlineFont *ofont,
uint16 char1, uint16 char2, uint32 emwidth);
struct OutlineFont *ami_open_outline_font(const plot_font_style_t *fstyle,
BOOL fallback);
static void ami_font_cleanup(struct MinList *ami_font_list);
@ -161,8 +163,7 @@ bool nsfont_position_in_string(const plot_font_style_t *fstyle,
utf16next = utf16[utf16charlen];
tempx = ami_font_plot_glyph(ofont, NULL, *utf16, utf16next,
0, 0, emwidth);
tempx = ami_font_width_glyph(ofont, *utf16, utf16next, emwidth);
if(tempx == 0)
{
@ -173,14 +174,12 @@ bool nsfont_position_in_string(const plot_font_style_t *fstyle,
if(ufont)
{
tempx = ami_font_plot_glyph(ufont, NULL, *utf16, utf16next,
0, 0, emwidth);
tempx = ami_font_width_glyph(ufont, *utf16, utf16next, emwidth);
}
/*
if(tempx == 0)
{
tempx = ami_font_plot_glyph(ofont, NULL, 0xfffd, utf16next,
0, 0, emwidth);
tempx = ami_font_width_glyph(ofont, NULL, 0xfffd, utf16next, emwidth);
}
*/
}
@ -282,7 +281,7 @@ bool nsfont_split(const plot_font_style_t *fstyle,
}
}
tempx = ami_font_plot_glyph(ofont, NULL, *utf16, utf16next, 0, 0, emwidth);
tempx = ami_font_width_glyph(ofont, *utf16, utf16next, emwidth);
if(tempx == 0)
{
@ -293,14 +292,12 @@ bool nsfont_split(const plot_font_style_t *fstyle,
if(ufont)
{
tempx = ami_font_plot_glyph(ufont, NULL, *utf16, utf16next,
0, 0, emwidth);
tempx = ami_font_width_glyph(ufont, *utf16, utf16next, emwidth);
}
/*
if(tempx == 0)
{
tempx = ami_font_plot_glyph(ofont, NULL, 0xfffd, utf16next,
0, 0, emwidth);
tempx = ami_font_width_glyph(ofont, 0xfffd, utf16next, emwidth);
}
*/
}
@ -568,6 +565,47 @@ int32 ami_font_plot_glyph(struct OutlineFont *ofont, struct RastPort *rp,
return char_advance;
}
int32 ami_font_width_glyph(struct OutlineFont *ofont,
uint16 char1, uint16 char2, uint32 emwidth)
{
int32 char_advance = 0;
FIXED kern = 0;
struct MinList *gwlist;
FIXED char1w;
struct GlyphWidthEntry *gwnode;
if(ESetInfo(&ofont->olf_EEngine,
OT_GlyphCode, char1,
OT_GlyphCode2, char1,
TAG_END) == OTERR_Success)
{
if(EObtainInfo(&ofont->olf_EEngine,
OT_WidthList, &gwlist,
TAG_END) == 0)
{
gwnode = GetHead((struct MinList *)gwlist);
char1w = gwnode->gwe_Width;
kern = 0;
if(char2) {
if(ESetInfo(&ofont->olf_EEngine,
OT_GlyphCode, char1,
OT_GlyphCode2, char2,
TAG_END) == OTERR_Success)
{
EObtainInfo(&ofont->olf_EEngine,
OT_TextKernPair, &kern,
TAG_END);
}
}
char_advance = (ULONG)(((char1w - kern) * emwidth) / 65536);
}
}
return char_advance;
}
uint16 ami_font_translate_smallcaps(uint16 utf16char)
{
uint16 *p;