First crack at pango. Try "cairo.pango.gadgets" run

diff --git a/extra/cairo/pango/gadgets/gadgets.factor b/extra/cairo/pango/gadgets/gadgets.factor
new file mode 100644 (file)
index 0000000..780881e
--- /dev/null
+++ b/extra/cairo/pango/gadgets/gadgets.factor
@@ -0,0 +1,20 @@
+USING: cairo.pango cairo cairo.ffi cairo.gadgets
+alien.c-types kernel math ;
+IN: cairo.pango.gadgets
+
+: (pango-gadget) ( setup show -- gadget )
+    [ drop layout-size ]
+    [ compose [ with-pango ] curry <cached-cairo> ] 2bi ;
+
+: <pango-gadget> ( quot -- gadget )
+    [ cr layout pango_cairo_show_layout ] (pango-gadget) ;
+
+USING: prettyprint sequences ui.gadgets.panes ;
+: hello-pango ( -- )
+    50 [ 6 + ] map [
+        "Sans Bold " swap unparse append
+        [ layout-font "Hello, Pango!" layout-text ] curry
+        <pango-gadget> gadget.
+    ] each ;
+
+MAIN: hello-pango

diff --git a/extra/cairo/pango/pango.factor b/extra/cairo/pango/pango.factor
new file mode 100644 (file)
index 0000000..789044f
--- /dev/null
+++ b/extra/cairo/pango/pango.factor
@@ -0,0 +1,175 @@
+! Copyright (C) 2008 Matthew Willis.
+! See http://factorcode.org/license.txt for BSD license.
+!
+! pangocairo bindings, from pango/pangocairo.h
+
+USING: cairo.ffi alien.c-types math
+alien.syntax system combinators alien ;
+IN: cairo.pango
+
+<< "pangocairo" {
+!    { [ os winnt? ] [ "libpangocairo-1.dll" ] }
+!    { [ os macosx? ] [ "libpangocairo.dylib" ] }
+    { [ os unix? ] [ "libpangocairo-1.0.so" ] }
+} cond "cdecl" add-library >>
+
+LIBRARY: pangocairo
+
+TYPEDEF: void* PangoCairoFont
+TYPEDEF: void* PangoCairoFontMap
+TYPEDEF: void* PangoFontMap
+
+FUNCTION: PangoFontMap*
+pango_cairo_font_map_new  ( ) ;
+
+FUNCTION: PangoFontMap*
+pango_cairo_font_map_new_for_font_type ( cairo_font_type_t fonttype ) ;
+
+FUNCTION: PangoFontMap*
+pango_cairo_font_map_get_default ( ) ;
+
+FUNCTION: cairo_font_type_t
+pango_cairo_font_map_get_font_type ( PangoCairoFontMap* fontmap ) ;
+
+FUNCTION: void
+pango_cairo_font_map_set_resolution ( PangoCairoFontMap* fontmap, double dpi ) ;
+
+FUNCTION: double
+pango_cairo_font_map_get_resolution ( PangoCairoFontMap* fontmap ) ;
+
+FUNCTION: PangoContext*
+pango_cairo_font_map_create_context ( PangoCairoFontMap* fontmap ) ;
+
+FUNCTION: cairo_scaled_font_t*
+pango_cairo_font_get_scaled_font ( PangoCairoFont* font ) ;
+
+! Update a Pango context for the current state of a cairo context
+FUNCTION: void
+pango_cairo_update_context ( cairo_t* cr, PangoContext* context ) ;
+
+FUNCTION: void
+pango_cairo_context_set_font_options ( PangoContext* context, cairo_font_options_t* options ) ;
+
+FUNCTION: cairo_font_options_t*
+pango_cairo_context_get_font_options ( PangoContext* context ) ;
+
+FUNCTION: void
+pango_cairo_context_set_resolution ( PangoContext* context, double dpi ) ;
+
+FUNCTION: double
+pango_cairo_context_get_resolution ( PangoContext* context ) ;
+
+! Convenience
+FUNCTION: PangoLayout*
+pango_cairo_create_layout ( cairo_t* cr ) ;
+
+FUNCTION: void
+pango_cairo_update_layout ( cairo_t* cr, PangoLayout* layout ) ;
+
+! Rendering
+FUNCTION: void
+pango_cairo_show_glyph_string ( cairo_t* cr, PangoFont* font, PangoGlyphString* glyphs ) ;
+
+FUNCTION: void
+pango_cairo_show_layout_line ( cairo_t* cr, PangoLayoutLine* line ) ;
+
+FUNCTION: void
+pango_cairo_show_layout ( cairo_t* cr, PangoLayout* layout ) ;
+
+FUNCTION: void
+pango_cairo_show_error_underline ( cairo_t* cr, double x, double y, double width, double height ) ;
+
+! Rendering to a path
+FUNCTION: void
+pango_cairo_glyph_string_path ( cairo_t* cr, PangoFont* font, PangoGlyphString* glyphs ) ;
+
+FUNCTION: void
+pango_cairo_layout_line_path  ( cairo_t* cr, PangoLayoutLine* line ) ;
+
+FUNCTION: void
+pango_cairo_layout_path ( cairo_t* cr, PangoLayout* layout ) ;
+
+FUNCTION: void
+pango_cairo_error_underline_path ( cairo_t* cr, double x, double y, double width, double height ) ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+! Helpful functions from other parts of pango
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: PANGO_SCALE 1024 ;
+
+FUNCTION: void
+pango_layout_set_text ( PangoLayout* layout, char* text, int length ) ;
+
+FUNCTION: char*
+pango_layout_get_text ( PangoLayout* layout ) ;
+
+FUNCTION: void
+pango_layout_get_size ( PangoLayout* layout, int* width, int* height ) ;
+
+TYPEDEF: void* PangoFontDescription
+
+FUNCTION: PangoFontDescription*
+pango_font_description_from_string ( char* str ) ;
+
+FUNCTION: char*
+pango_font_description_to_string ( PangoFontDescription* desc ) ;
+
+FUNCTION: char*
+pango_font_description_to_filename ( PangoFontDescription* desc ) ;
+
+FUNCTION: void
+pango_layout_set_font_description ( PangoLayout* layout, PangoFontDescription* desc ) ;
+
+FUNCTION: PangoFontDescription*
+pango_layout_get_font_description ( PangoLayout* layout ) ;
+
+FUNCTION: void
+pango_layout_get_pixel_size ( PangoLayout* layout, int* width, int* height ) ;
+
+FUNCTION: void
+pango_font_description_free ( PangoFontDescription* desc ) ;
+
+TYPEDEF: void* gpointer
+
+FUNCTION: void
+g_object_unref ( gpointer object ) ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+! Higher level words and combinators
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+USING: destructors accessors namespaces kernel cairo ;
+
+TUPLE: pango-layout alien ;
+C: <pango-layout> pango-layout
+M: pango-layout dispose ( alien -- ) alien>> g_object_unref ;
+
+: layout ( -- pango-layout ) pango-layout get ;
+
+: (with-pango) ( layout quot -- )
+    >r alien>> pango-layout r> with-variable ; inline
+
+: with-pango ( quot -- )
+    cr pango_cairo_create_layout <pango-layout> swap
+    [ (with-pango) ] curry with-disposal ; inline
+
+: pango-layout-get-pixel-size ( layout -- width height )
+    0 <int> 0 <int> [ pango_layout_get_pixel_size ] 2keep
+    [ *int ] bi@ ;
+
+: dummy-pango ( quot -- )
+    >r CAIRO_FORMAT_ARGB32 0 0 cairo_image_surface_create
+    r> [ with-pango ] curry with-cairo-from-surface ; inline
+
+: layout-size ( quot -- width height )
+    [ layout pango-layout-get-pixel-size ] compose dummy-pango ; inline
+
+: layout-font ( str -- )
+    pango_font_description_from_string
+    dup zero? [ "pango: not a valid font." throw ] when
+    layout over pango_layout_set_font_description
+    pango_font_description_free ;
+
+: layout-text ( str -- )
+    layout swap -1 pango_layout_set_text ;