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Fixing font scaling and splitting

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svn path=/trunk/netsurf/; revision=11482
This commit is contained in:
Sven Weidauer 2011-01-25 10:25:10 +00:00
parent 15e7b87cac
commit 5615eb65af
1 changed files with 9 additions and 13 deletions
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20
cocoa/font.m
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@ -33,6 +33,7 @@ static NSLayoutManager *cocoa_prepare_layout_manager( const char *string, size_t
const plot_font_style_t *style );
static NSTextStorage *cocoa_text_storage = nil;
static NSTextContainer *cocoa_text_container = nil;
static CGFloat cocoa_font_scale_factor = 1.0;
static bool nsfont_width(const plot_font_style_t *style,
const char *string, size_t length,
@ -50,21 +51,21 @@ static bool nsfont_position_in_string(const plot_font_style_t *style,
int x, size_t *char_offset, int *actual_x)
{
NSLayoutManager *layout = cocoa_prepare_layout_manager( string, length, style );
CGFloat fraction = 0.0;
NSUInteger glyphIndex = [layout glyphIndexForPoint: NSMakePoint( x, 0 )
inTextContainer: cocoa_text_container
fractionOfDistanceThroughGlyph: NULL];
fractionOfDistanceThroughGlyph: &fraction];
if (fraction > 0) ++glyphIndex;
NSUInteger chars = [layout characterIndexForGlyphAtIndex: glyphIndex];
size_t offset = 0;
while (chars > 0) {
while (chars-- > 0) {
uint8_t ch = ((uint8_t *)string)[offset];
if (0xC2 <= ch && ch <= 0xDF) offset += 2;
else if (0xE0 <= ch && ch <= 0xEF) offset += 3;
else if (0xF0 <= ch && ch <= 0xF4) offset += 4;
else offset++;
--chars;
}
*char_offset = offset;
@ -84,7 +85,7 @@ static bool nsfont_split(const plot_font_style_t *style,
while ((string[*char_offset] != ' ') && (*char_offset > 0))
(*char_offset)--;
nsfont_position_in_string(style, string, *char_offset + 1, x, char_offset,
nsfont_position_in_string(style, string, *char_offset, x, char_offset,
actual_x);
return true;
@ -106,7 +107,7 @@ static NSString *cocoa_font_family_name( plot_font_generic_family_t family )
static NSFont *cocoa_font_get_nsfont( const plot_font_style_t *style )
{
NSFont *font = [NSFont fontWithName: cocoa_font_family_name( style->family )
size: (CGFloat)style->size / FONT_SIZE_SCALE];
size: cocoa_font_scale_factor * (CGFloat)style->size / FONT_SIZE_SCALE];
NSFontTraitMask traits = 0;
if (style->flags & FONTF_ITALIC || style->flags & FONTF_OBLIQUE) traits |= NSItalicFontMask;
@ -171,8 +172,6 @@ static NSLayoutManager *cocoa_prepare_layout_manager( const char *bytes, size_t
return layout;
}
static CGFloat cocoa_font_scale_factor = 1.0;
void cocoa_set_font_scale_factor( float newFactor )
{
cocoa_font_scale_factor = newFactor;
@ -180,10 +179,7 @@ void cocoa_set_font_scale_factor( float newFactor )
void cocoa_draw_string( int x, int y, const char *bytes, size_t length, const plot_font_style_t *style )
{
plot_font_style_t scaledStyle = *style;
scaledStyle.size *= cocoa_font_scale_factor;
NSLayoutManager *layout = cocoa_prepare_layout_manager( bytes, length, &scaledStyle );
NSLayoutManager *layout = cocoa_prepare_layout_manager( bytes, length, style );
if ([cocoa_text_storage length] > 0) {
NSFont *font = [cocoa_text_storage attribute: NSFontAttributeName atIndex: 0 effectiveRange: NULL];