First crack at pango. Try "cairo.pango.gadgets" run
Matthew Willis
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USING: cairo.pango cairo cairo.ffi cairo.gadgets
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alien.c-types kernel math ;
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IN: cairo.pango.gadgets
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: (pango-gadget) ( setup show -- gadget )
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[ drop layout-size ]
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[ compose [ with-pango ] curry <cached-cairo> ] 2bi ;
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: <pango-gadget> ( quot -- gadget )
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[ cr layout pango_cairo_show_layout ] (pango-gadget) ;
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USING: prettyprint sequences ui.gadgets.panes ;
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: hello-pango ( -- )
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50 [ 6 + ] map [
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"Sans Bold " swap unparse append
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[ layout-font "Hello, Pango!" layout-text ] curry
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<pango-gadget> gadget.
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] each ;
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MAIN: hello-pango
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! Copyright (C) 2008 Matthew Willis.
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! See http://factorcode.org/license.txt for BSD license.
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!
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! pangocairo bindings, from pango/pangocairo.h
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USING: cairo.ffi alien.c-types math
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alien.syntax system combinators alien ;
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IN: cairo.pango
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<< "pangocairo" {
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! { [ os winnt? ] [ "libpangocairo-1.dll" ] }
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! { [ os macosx? ] [ "libpangocairo.dylib" ] }
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{ [ os unix? ] [ "libpangocairo-1.0.so" ] }
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} cond "cdecl" add-library >>
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LIBRARY: pangocairo
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TYPEDEF: void* PangoCairoFont
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TYPEDEF: void* PangoCairoFontMap
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TYPEDEF: void* PangoFontMap
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FUNCTION: PangoFontMap*
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pango_cairo_font_map_new ( ) ;
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FUNCTION: PangoFontMap*
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pango_cairo_font_map_new_for_font_type ( cairo_font_type_t fonttype ) ;
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FUNCTION: PangoFontMap*
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pango_cairo_font_map_get_default ( ) ;
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FUNCTION: cairo_font_type_t
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pango_cairo_font_map_get_font_type ( PangoCairoFontMap* fontmap ) ;
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FUNCTION: void
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pango_cairo_font_map_set_resolution ( PangoCairoFontMap* fontmap, double dpi ) ;
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FUNCTION: double
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pango_cairo_font_map_get_resolution ( PangoCairoFontMap* fontmap ) ;
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FUNCTION: PangoContext*
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pango_cairo_font_map_create_context ( PangoCairoFontMap* fontmap ) ;
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FUNCTION: cairo_scaled_font_t*
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pango_cairo_font_get_scaled_font ( PangoCairoFont* font ) ;
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! Update a Pango context for the current state of a cairo context
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FUNCTION: void
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pango_cairo_update_context ( cairo_t* cr, PangoContext* context ) ;
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FUNCTION: void
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pango_cairo_context_set_font_options ( PangoContext* context, cairo_font_options_t* options ) ;
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FUNCTION: cairo_font_options_t*
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pango_cairo_context_get_font_options ( PangoContext* context ) ;
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FUNCTION: void
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pango_cairo_context_set_resolution ( PangoContext* context, double dpi ) ;
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FUNCTION: double
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pango_cairo_context_get_resolution ( PangoContext* context ) ;
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! Convenience
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FUNCTION: PangoLayout*
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pango_cairo_create_layout ( cairo_t* cr ) ;
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FUNCTION: void
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pango_cairo_update_layout ( cairo_t* cr, PangoLayout* layout ) ;
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! Rendering
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FUNCTION: void
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pango_cairo_show_glyph_string ( cairo_t* cr, PangoFont* font, PangoGlyphString* glyphs ) ;
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FUNCTION: void
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pango_cairo_show_layout_line ( cairo_t* cr, PangoLayoutLine* line ) ;
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FUNCTION: void
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pango_cairo_show_layout ( cairo_t* cr, PangoLayout* layout ) ;
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FUNCTION: void
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pango_cairo_show_error_underline ( cairo_t* cr, double x, double y, double width, double height ) ;
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! Rendering to a path
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FUNCTION: void
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pango_cairo_glyph_string_path ( cairo_t* cr, PangoFont* font, PangoGlyphString* glyphs ) ;
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FUNCTION: void
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pango_cairo_layout_line_path ( cairo_t* cr, PangoLayoutLine* line ) ;
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FUNCTION: void
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pango_cairo_layout_path ( cairo_t* cr, PangoLayout* layout ) ;
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FUNCTION: void
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pango_cairo_error_underline_path ( cairo_t* cr, double x, double y, double width, double height ) ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! Helpful functions from other parts of pango
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: PANGO_SCALE 1024 ;
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FUNCTION: void
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pango_layout_set_text ( PangoLayout* layout, char* text, int length ) ;
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FUNCTION: char*
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pango_layout_get_text ( PangoLayout* layout ) ;
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FUNCTION: void
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pango_layout_get_size ( PangoLayout* layout, int* width, int* height ) ;
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TYPEDEF: void* PangoFontDescription
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FUNCTION: PangoFontDescription*
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pango_font_description_from_string ( char* str ) ;
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FUNCTION: char*
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pango_font_description_to_string ( PangoFontDescription* desc ) ;
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FUNCTION: char*
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pango_font_description_to_filename ( PangoFontDescription* desc ) ;
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FUNCTION: void
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pango_layout_set_font_description ( PangoLayout* layout, PangoFontDescription* desc ) ;
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FUNCTION: PangoFontDescription*
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pango_layout_get_font_description ( PangoLayout* layout ) ;
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FUNCTION: void
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pango_layout_get_pixel_size ( PangoLayout* layout, int* width, int* height ) ;
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FUNCTION: void
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pango_font_description_free ( PangoFontDescription* desc ) ;
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TYPEDEF: void* gpointer
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FUNCTION: void
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g_object_unref ( gpointer object ) ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! Higher level words and combinators
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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USING: destructors accessors namespaces kernel cairo ;
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TUPLE: pango-layout alien ;
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C: <pango-layout> pango-layout
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M: pango-layout dispose ( alien -- ) alien>> g_object_unref ;
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: layout ( -- pango-layout ) pango-layout get ;
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: (with-pango) ( layout quot -- )
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>r alien>> pango-layout r> with-variable ; inline
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: with-pango ( quot -- )
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cr pango_cairo_create_layout <pango-layout> swap
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[ (with-pango) ] curry with-disposal ; inline
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: pango-layout-get-pixel-size ( layout -- width height )
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0 <int> 0 <int> [ pango_layout_get_pixel_size ] 2keep
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[ *int ] bi@ ;
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: dummy-pango ( quot -- )
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>r CAIRO_FORMAT_ARGB32 0 0 cairo_image_surface_create
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r> [ with-pango ] curry with-cairo-from-surface ; inline
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: layout-size ( quot -- width height )
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[ layout pango-layout-get-pixel-size ] compose dummy-pango ; inline
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: layout-font ( str -- )
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pango_font_description_from_string
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dup zero? [ "pango: not a valid font." throw ] when
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layout over pango_layout_set_font_description
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pango_font_description_free ;
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: layout-text ( str -- )
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layout swap -1 pango_layout_set_text ;
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