diff options
Diffstat (limited to 'frontends/cocoa/font.m')
| -rw-r--r-- | frontends/cocoa/font.m | 333 |
1 files changed, 172 insertions, 161 deletions
diff --git a/frontends/cocoa/font.m b/frontends/cocoa/font.m index 66ee5d090..daed97fae 100644 --- a/frontends/cocoa/font.m +++ b/frontends/cocoa/font.m @@ -26,215 +26,226 @@ #import "cocoa/plotter.h" #import "cocoa/font.h" -static NSLayoutManager *cocoa_prepare_layout_manager( const char *string, size_t length, - const plot_font_style_t *style ); +static NSLayoutManager *cocoa_prepare_layout_manager(const char *string, size_t length, + const plot_font_style_t *style); -static CGFloat cocoa_layout_width( NSLayoutManager *layout ); -static CGFloat cocoa_layout_width_chars( NSLayoutManager *layout, size_t characters ); -static NSUInteger cocoa_glyph_for_location( NSLayoutManager *layout, CGFloat x ); -static size_t cocoa_bytes_for_characters( const char *string, size_t characters ); -static NSDictionary *cocoa_font_attributes( const plot_font_style_t *style ); +static CGFloat cocoa_layout_width(NSLayoutManager *layout); +static CGFloat cocoa_layout_width_chars(NSLayoutManager *layout, size_t characters); +static NSUInteger cocoa_glyph_for_location(NSLayoutManager *layout, CGFloat x); +static size_t cocoa_bytes_for_characters(const char *string, size_t characters); +static NSDictionary *cocoa_font_attributes(const plot_font_style_t *style); static NSTextStorage *cocoa_text_storage = nil; static NSTextContainer *cocoa_text_container = nil; static nserror cocoa_font_width(const plot_font_style_t *style, - const char *string, size_t length, - int *width) + const char *string, size_t length, + int *width) { - NSLayoutManager *layout; - layout = cocoa_prepare_layout_manager( string, length, style ); - *width = cocoa_layout_width( layout ); - return NSERROR_OK; + NSLayoutManager *layout; + layout = cocoa_prepare_layout_manager(string, length, style); + *width = cocoa_layout_width(layout); + return NSERROR_OK; } static nserror cocoa_font_position(const plot_font_style_t *style, - const char *string, size_t length, - int x, size_t *char_offset, int *actual_x) + const char *string, size_t length, + int x, size_t *char_offset, int *actual_x) { - NSLayoutManager *layout = cocoa_prepare_layout_manager( string, length, style ); - if (layout == nil) { - return NSERROR_BAD_PARAMETER; - } - - NSUInteger glyphIndex = cocoa_glyph_for_location( layout, x ); - NSUInteger chars = [layout characterIndexForGlyphAtIndex: glyphIndex]; - - if (chars >= [cocoa_text_storage length]) *char_offset = length; - else *char_offset = cocoa_bytes_for_characters( string, chars ); - - *actual_x = cocoa_pt_to_px( NSMaxX( [layout boundingRectForGlyphRange: NSMakeRange( glyphIndex - 1, 1 ) - inTextContainer: cocoa_text_container] ) ); - - return NSERROR_OK; + NSLayoutManager *layout = cocoa_prepare_layout_manager(string, length, style); + if (layout == nil) { + return NSERROR_BAD_PARAMETER; + } + + NSUInteger glyphIndex = cocoa_glyph_for_location(layout, x); + NSUInteger chars = [layout characterIndexForGlyphAtIndex:glyphIndex]; + + if (chars >= [cocoa_text_storage length]) + *char_offset = length; + else + *char_offset = cocoa_bytes_for_characters(string, chars); + + *actual_x = cocoa_pt_to_px(NSMaxX([layout boundingRectForGlyphRange:NSMakeRange(glyphIndex - 1, 1) + inTextContainer:cocoa_text_container])); + + return NSERROR_OK; } static nserror cocoa_font_split(const plot_font_style_t *style, - const char *string, size_t length, - int x, size_t *char_offset, int *actual_x) + const char *string, size_t length, + int x, size_t *char_offset, int *actual_x) { - NSLayoutManager *layout = cocoa_prepare_layout_manager( string, length, style ); - if (layout == nil) return NSERROR_BAD_PARAMETER; - - NSUInteger glyphIndex = cocoa_glyph_for_location( layout, x ); - NSUInteger chars = [layout characterIndexForGlyphAtIndex: glyphIndex]; - - if (chars >= [cocoa_text_storage length]) { - *char_offset = length; - *actual_x = cocoa_layout_width( layout ); - return NSERROR_OK; - } - - - chars = [[cocoa_text_storage string] rangeOfString: @" " options: NSBackwardsSearch range: NSMakeRange( 0, chars + 1 )].location; - if (chars == NSNotFound) { - *char_offset = 0; - *actual_x = 0; - return NSERROR_OK; - } - - *char_offset = cocoa_bytes_for_characters( string, chars ); - *actual_x = cocoa_layout_width_chars( layout, chars ); - - return NSERROR_OK; + NSLayoutManager *layout = cocoa_prepare_layout_manager(string, length, style); + if (layout == nil) + return NSERROR_BAD_PARAMETER; + + NSUInteger glyphIndex = cocoa_glyph_for_location(layout, x); + NSUInteger chars = [layout characterIndexForGlyphAtIndex:glyphIndex]; + + if (chars >= [cocoa_text_storage length]) { + *char_offset = length; + *actual_x = cocoa_layout_width(layout); + return NSERROR_OK; + } + + chars = [[cocoa_text_storage string] rangeOfString:@" " options:NSBackwardsSearch range:NSMakeRange(0, chars + 1)].location; + if (chars == NSNotFound) { + *char_offset = 0; + *actual_x = 0; + return NSERROR_OK; + } + + *char_offset = cocoa_bytes_for_characters(string, chars); + *actual_x = cocoa_layout_width_chars(layout, chars); + + return NSERROR_OK; } - static struct gui_layout_table layout_table = { - .width = cocoa_font_width, - .position = cocoa_font_position, - .split = cocoa_font_split, + .width = cocoa_font_width, + .position = cocoa_font_position, + .split = cocoa_font_split, }; struct gui_layout_table *cocoa_layout_table = &layout_table; - #pragma mark - -void cocoa_draw_string( CGFloat x, CGFloat y, const char *bytes, size_t length, const plot_font_style_t *style ) +void cocoa_draw_string(CGFloat x, CGFloat y, const char *bytes, size_t length, const plot_font_style_t *style) { - NSLayoutManager *layout = cocoa_prepare_layout_manager( bytes, length, style ); - if (layout == nil) return; - - NSFont *font = [cocoa_text_storage attribute: NSFontAttributeName atIndex: 0 effectiveRange: NULL]; - CGFloat baseline = [layout defaultLineHeightForFont: font] * 3.0 / 4.0; - - NSRange glyphRange = [layout glyphRangeForTextContainer: cocoa_text_container]; - [layout drawGlyphsForGlyphRange: glyphRange atPoint: NSMakePoint( x, y - baseline )]; -} + NSLayoutManager *layout = cocoa_prepare_layout_manager(bytes, length, style); + if (layout == nil) + return; + + NSFont *font = [cocoa_text_storage attribute:NSFontAttributeName atIndex:0 effectiveRange:NULL]; + CGFloat baseline = [layout defaultLineHeightForFont:font] * 3.0 / 4.0; + NSRange glyphRange = [layout glyphRangeForTextContainer:cocoa_text_container]; + [layout drawGlyphsForGlyphRange:glyphRange atPoint:NSMakePoint(x, y - baseline)]; +} #pragma mark - -static inline CGFloat cocoa_layout_width( NSLayoutManager *layout ) +static inline CGFloat cocoa_layout_width(NSLayoutManager *layout) { - if (layout == nil) return 0.0; - - return cocoa_pt_to_px( NSWidth( [layout usedRectForTextContainer: cocoa_text_container] ) ); + if (layout == nil) + return 0.0; + + return cocoa_pt_to_px(NSWidth([layout usedRectForTextContainer:cocoa_text_container])); } -static inline CGFloat cocoa_layout_width_chars( NSLayoutManager *layout, size_t characters ) +static inline CGFloat cocoa_layout_width_chars(NSLayoutManager *layout, size_t characters) { - NSUInteger glyphIndex = [layout glyphIndexForCharacterAtIndex: characters]; - return cocoa_pt_to_px( [layout locationForGlyphAtIndex: glyphIndex].x ); + NSUInteger glyphIndex = [layout glyphIndexForCharacterAtIndex:characters]; + return cocoa_pt_to_px([layout locationForGlyphAtIndex:glyphIndex].x); } -static inline NSUInteger cocoa_glyph_for_location( NSLayoutManager *layout, CGFloat x ) +static inline NSUInteger cocoa_glyph_for_location(NSLayoutManager *layout, CGFloat x) { - CGFloat fraction = 0.0; - NSUInteger glyphIndex = [layout glyphIndexForPoint: NSMakePoint( cocoa_px_to_pt( x ), 0 ) - inTextContainer: cocoa_text_container - fractionOfDistanceThroughGlyph: &fraction]; - if (fraction >= 1.0) ++glyphIndex; - return glyphIndex; + CGFloat fraction = 0.0; + NSUInteger glyphIndex = [layout glyphIndexForPoint:NSMakePoint(cocoa_px_to_pt(x), 0) + inTextContainer:cocoa_text_container + fractionOfDistanceThroughGlyph:&fraction]; + if (fraction >= 1.0) + ++glyphIndex; + return glyphIndex; } -static inline size_t cocoa_bytes_for_characters( const char *string, size_t chars ) +static inline size_t cocoa_bytes_for_characters(const char *string, size_t chars) { - size_t offset = 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++; - } - return offset; + size_t offset = 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++; + } + return offset; } -static NSLayoutManager *cocoa_prepare_layout_manager( const char *bytes, size_t length, - const plot_font_style_t *style ) +static NSLayoutManager *cocoa_prepare_layout_manager(const char *bytes, size_t length, + const plot_font_style_t *style) { - if (NULL == bytes || 0 == length) return nil; - - NSString *string = [[NSString alloc] initWithBytes: bytes length:length encoding:NSUTF8StringEncoding] ; - if (string == nil) return nil; - - static NSLayoutManager *layout = nil; - if (nil == layout) { - cocoa_text_container = [[NSTextContainer alloc] initWithContainerSize: NSMakeSize( CGFLOAT_MAX, CGFLOAT_MAX )]; - [cocoa_text_container setLineFragmentPadding: 0]; - - layout = [[NSLayoutManager alloc] init]; - [layout addTextContainer: cocoa_text_container]; - } - - static NSString *oldString = 0; - static plot_font_style_t oldStyle = { 0, 0, 0, 0, 0, 0 }; - - const bool styleChanged = memcmp( style, &oldStyle, sizeof oldStyle ) != 0; - - if ([oldString isEqualToString: string] && !styleChanged) { - return layout; - } - - oldString = [string copy]; - oldStyle = *style; - - static NSDictionary *attributes = nil; - if (styleChanged || attributes == nil) { - attributes = cocoa_font_attributes( style ) ; - } - - cocoa_text_storage = [[NSTextStorage alloc] initWithString: string attributes: attributes]; - [cocoa_text_storage addLayoutManager: layout]; - - [layout ensureLayoutForTextContainer: cocoa_text_container]; - - return layout; + if (NULL == bytes || 0 == length) + return nil; + + NSString *string = [[NSString alloc] initWithBytes:bytes length:length encoding:NSUTF8StringEncoding]; + if (string == nil) + return nil; + + static NSLayoutManager *layout = nil; + if (nil == layout) { + cocoa_text_container = [[NSTextContainer alloc] initWithContainerSize:NSMakeSize(CGFLOAT_MAX, CGFLOAT_MAX)]; + [cocoa_text_container setLineFragmentPadding:0]; + + layout = [[NSLayoutManager alloc] init]; + [layout addTextContainer:cocoa_text_container]; + } + + static NSString *oldString = 0; + static plot_font_style_t oldStyle = { 0, 0, 0, 0, 0, 0 }; + + const bool styleChanged = memcmp(style, &oldStyle, sizeof oldStyle) != 0; + + if ([oldString isEqualToString:string] && !styleChanged) { + return layout; + } + + oldString = [string copy]; + oldStyle = *style; + + static NSDictionary *attributes = nil; + if (styleChanged || attributes == nil) { + attributes = cocoa_font_attributes(style); + } + + cocoa_text_storage = [[NSTextStorage alloc] initWithString:string attributes:attributes]; + [cocoa_text_storage addLayoutManager:layout]; + + [layout ensureLayoutForTextContainer:cocoa_text_container]; + + return layout; } -static NSString * const cocoa_font_families[PLOT_FONT_FAMILY_COUNT] = { - [PLOT_FONT_FAMILY_SERIF] = @"Times", - [PLOT_FONT_FAMILY_SANS_SERIF] = @"Helvetica", - [PLOT_FONT_FAMILY_MONOSPACE] = @"Courier", - [PLOT_FONT_FAMILY_CURSIVE] = @"Apple Chancery", - [PLOT_FONT_FAMILY_FANTASY] = @"Marker Felt" +static NSString *const cocoa_font_families[PLOT_FONT_FAMILY_COUNT] = { + [PLOT_FONT_FAMILY_SERIF] = @"Times", + [PLOT_FONT_FAMILY_SANS_SERIF] = @"Helvetica", + [PLOT_FONT_FAMILY_MONOSPACE] = @"Courier", + [PLOT_FONT_FAMILY_CURSIVE] = @"Apple Chancery", + [PLOT_FONT_FAMILY_FANTASY] = @"Marker Felt" }; -static inline NSFont *cocoa_font_get_nsfont( const plot_font_style_t *style ) +static inline NSFont *cocoa_font_get_nsfont(const plot_font_style_t *style) { - NSFont *font = [NSFont fontWithName: cocoa_font_families[style->family] - size: (CGFloat)style->size / FONT_SIZE_SCALE]; - - NSFontTraitMask traits = 0; - if (style->flags & FONTF_ITALIC || style->flags & FONTF_OBLIQUE) traits |= NSItalicFontMask; - if (style->flags & FONTF_SMALLCAPS) traits |= NSSmallCapsFontMask; - if (style->weight > 400) traits |= NSBoldFontMask; - - if (0 != traits) { - NSFontManager *fm = [NSFontManager sharedFontManager]; - font = [fm convertFont: font toHaveTrait: traits]; - } - - return font; + NSFont *font = [NSFont fontWithName:cocoa_font_families[style->family] + size:(CGFloat)style->size / FONT_SIZE_SCALE]; + + NSFontTraitMask traits = 0; + if (style->flags & FONTF_ITALIC || style->flags & FONTF_OBLIQUE) + traits |= NSItalicFontMask; + if (style->flags & FONTF_SMALLCAPS) + traits |= NSSmallCapsFontMask; + if (style->weight > 400) + traits |= NSBoldFontMask; + + if (0 != traits) { + NSFontManager *fm = [NSFontManager sharedFontManager]; + font = [fm convertFont:font toHaveTrait:traits]; + } + + return font; } -static inline NSDictionary *cocoa_font_attributes( const plot_font_style_t *style ) +static inline NSDictionary *cocoa_font_attributes(const plot_font_style_t *style) { - return [NSDictionary dictionaryWithObjectsAndKeys: - cocoa_font_get_nsfont( style ), NSFontAttributeName, - cocoa_convert_colour( style->foreground ), NSForegroundColorAttributeName, - nil]; + return [NSDictionary dictionaryWithObjectsAndKeys: + cocoa_font_get_nsfont(style), NSFontAttributeName, + cocoa_convert_colour(style->foreground), NSForegroundColorAttributeName, + nil]; } |