--- /dev/null
+Sampo Vuori
--- /dev/null
+! Cairo "Hello World" demo
+! Copyright (c) 2007 Sampo Vuori
+! License: http://factorcode.org/license.txt
+!
+! This example is an adaptation of the following cairo sample code:
+! http://cairographics.org/samples/text/
+
+
+USING: cairo.ffi math math.constants byte-arrays kernel ui ui.render
+ ui.gadgets opengl.gl accessors ;
+
+IN: cairo-demo
+
+
+: make-image-array ( -- array )
+ 384 256 4 * * <byte-array> ;
+
+: convert-array-to-surface ( array -- cairo_surface_t )
+ CAIRO_FORMAT_ARGB32 384 256 over 4 *
+ cairo_image_surface_create_for_data ;
+
+
+TUPLE: cairo-demo-gadget < gadget image-array cairo-t ;
+
+M: cairo-demo-gadget draw-gadget* ( gadget -- )
+ 0 0 glRasterPos2i
+ 1.0 -1.0 glPixelZoom
+ >r 384 256 GL_RGBA GL_UNSIGNED_BYTE r>
+ image-array>> glDrawPixels ;
+
+: create-surface ( gadget -- cairo_surface_t )
+ make-image-array [ swap (>>image-array) ] keep
+ convert-array-to-surface ;
+
+: init-cairo ( gadget -- cairo_t )
+ create-surface cairo_create ;
+
+M: cairo-demo-gadget pref-dim* drop { 384 256 0 } ;
+
+: draw-hello-world ( gadget -- )
+ cairo-t>>
+ dup "Sans" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_BOLD cairo_select_font_face
+ dup 90.0 cairo_set_font_size
+ dup 10.0 135.0 cairo_move_to
+ dup "Hello" cairo_show_text
+ dup 70.0 165.0 cairo_move_to
+ dup "World" cairo_text_path
+ dup 0.5 0.5 1 cairo_set_source_rgb
+ dup cairo_fill_preserve
+ dup 0 0 0 cairo_set_source_rgb
+ dup 2.56 cairo_set_line_width
+ dup cairo_stroke
+ dup 1 0.2 0.2 0.6 cairo_set_source_rgba
+ dup 10.0 135.0 5.12 0 pi 2 * cairo_arc
+ dup cairo_close_path
+ dup 70.0 165.0 5.12 0 pi 2 * cairo_arc
+ cairo_fill ;
+
+M: cairo-demo-gadget graft* ( gadget -- )
+ dup dup init-cairo swap (>>cairo-t) draw-hello-world ;
+
+M: cairo-demo-gadget ungraft* ( gadget -- )
+ cairo-t>> cairo_destroy ;
+
+: <cairo-demo-gadget> ( -- gadget )
+ cairo-demo-gadget new-gadget ;
+
+: run ( -- )
+ [
+ <cairo-demo-gadget> "Hello World from Factor!" open-window
+ ] with-ui ;
+
+MAIN: run
--- /dev/null
+Sampo Vuori
+Doug Coleman
--- /dev/null
+! Copyright (C) 2008 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: cairo.ffi kernel accessors sequences
+namespaces fry continuations destructors ;
+IN: cairo
+
+TUPLE: cairo-t alien ;
+C: <cairo-t> cairo-t
+M: cairo-t dispose ( alien -- ) alien>> cairo_destroy ;
+
+TUPLE: cairo-surface-t alien ;
+C: <cairo-surface-t> cairo-surface-t
+M: cairo-surface-t dispose ( alien -- ) alien>> cairo_surface_destroy ;
+
+: check-cairo ( cairo_status_t -- )
+ dup CAIRO_STATUS_SUCCESS = [ drop ]
+ [ cairo_status_to_string "Cairo error: " prepend throw ] if ;
+
+SYMBOL: cairo
+: cr ( -- cairo ) cairo get ;
+
+: (with-cairo) ( cairo-t quot -- )
+ >r alien>> cairo r> [ cr cairo_status check-cairo ]
+ compose with-variable ; inline
+
+: with-cairo ( cairo quot -- )
+ >r <cairo-t> r> [ (with-cairo) ] curry with-disposal ; inline
+
+: (with-surface) ( cairo-surface-t quot -- )
+ >r alien>> r> [ cairo_surface_status check-cairo ] bi ; inline
+
+: with-surface ( cairo_surface quot -- )
+ >r <cairo-surface-t> r> [ (with-surface) ] curry with-disposal ; inline
+
+: with-cairo-from-surface ( cairo_surface quot -- )
+ '[ cairo_create _ with-cairo ] with-surface ; inline
--- /dev/null
+! Copyright (c) 2007 Sampo Vuori
+! Copyright (c) 2008 Matthew Willis
+!
+! Adapted from cairo.h, version 1.5.14
+! License: http://factorcode.org/license.txt
+
+USING: system combinators alien alien.syntax kernel
+alien.c-types accessors sequences arrays ui.gadgets ;
+
+IN: cairo.ffi
+<< "cairo" {
+ { [ os winnt? ] [ "libcairo-2.dll" ] }
+ { [ os macosx? ] [ "/opt/local/lib/libcairo.dylib" ] }
+ { [ os unix? ] [ "libcairo.so.2" ] }
+} cond "cdecl" add-library >>
+
+LIBRARY: cairo
+
+FUNCTION: int cairo_version ( ) ;
+FUNCTION: char* cairo_version_string ( ) ;
+
+TYPEDEF: int cairo_bool_t
+
+! I am leaving these and other void* types as opaque structures
+TYPEDEF: void* cairo_t
+TYPEDEF: void* cairo_surface_t
+
+C-STRUCT: cairo_matrix_t
+ { "double" "xx" }
+ { "double" "yx" }
+ { "double" "xy" }
+ { "double" "yy" }
+ { "double" "x0" }
+ { "double" "y0" } ;
+
+TYPEDEF: void* cairo_pattern_t
+
+TYPEDEF: void* cairo_destroy_func_t
+: cairo-destroy-func ( quot -- callback )
+ >r "void" { "void*" } "cdecl" r> alien-callback ; inline
+
+! See cairo.h for details
+C-STRUCT: cairo_user_data_key_t
+ { "int" "unused" } ;
+
+TYPEDEF: int cairo_status_t
+C-ENUM:
+ CAIRO_STATUS_SUCCESS
+ CAIRO_STATUS_NO_MEMORY
+ CAIRO_STATUS_INVALID_RESTORE
+ CAIRO_STATUS_INVALID_POP_GROUP
+ CAIRO_STATUS_NO_CURRENT_POINT
+ CAIRO_STATUS_INVALID_MATRIX
+ CAIRO_STATUS_INVALID_STATUS
+ CAIRO_STATUS_NULL_POINTER
+ CAIRO_STATUS_INVALID_STRING
+ CAIRO_STATUS_INVALID_PATH_DATA
+ CAIRO_STATUS_READ_ERROR
+ CAIRO_STATUS_WRITE_ERROR
+ CAIRO_STATUS_SURFACE_FINISHED
+ CAIRO_STATUS_SURFACE_TYPE_MISMATCH
+ CAIRO_STATUS_PATTERN_TYPE_MISMATCH
+ CAIRO_STATUS_INVALID_CONTENT
+ CAIRO_STATUS_INVALID_FORMAT
+ CAIRO_STATUS_INVALID_VISUAL
+ CAIRO_STATUS_FILE_NOT_FOUND
+ CAIRO_STATUS_INVALID_DASH
+ CAIRO_STATUS_INVALID_DSC_COMMENT
+ CAIRO_STATUS_INVALID_INDEX
+ CAIRO_STATUS_CLIP_NOT_REPRESENTABLE
+ CAIRO_STATUS_TEMP_FILE_ERROR
+ CAIRO_STATUS_INVALID_STRIDE ;
+
+TYPEDEF: int cairo_content_t
+: CAIRO_CONTENT_COLOR HEX: 1000 ;
+: CAIRO_CONTENT_ALPHA HEX: 2000 ;
+: CAIRO_CONTENT_COLOR_ALPHA HEX: 3000 ;
+
+TYPEDEF: void* cairo_write_func_t
+: cairo-write-func ( quot -- callback )
+ >r "cairo_status_t" { "void*" "uchar*" "int" }
+ "cdecl" r> alien-callback ; inline
+
+TYPEDEF: void* cairo_read_func_t
+: cairo-read-func ( quot -- callback )
+ >r "cairo_status_t" { "void*" "uchar*" "int" }
+ "cdecl" r> alien-callback ; inline
+
+! Functions for manipulating state objects
+FUNCTION: cairo_t*
+cairo_create ( cairo_surface_t* target ) ;
+
+FUNCTION: cairo_t*
+cairo_reference ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_destroy ( cairo_t* cr ) ;
+
+FUNCTION: uint
+cairo_get_reference_count ( cairo_t* cr ) ;
+
+FUNCTION: void*
+cairo_get_user_data ( cairo_t* cr, cairo_user_data_key_t* key ) ;
+
+FUNCTION: cairo_status_t
+cairo_set_user_data ( cairo_t* cr, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
+
+FUNCTION: void
+cairo_save ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_restore ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_push_group ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_push_group_with_content ( cairo_t* cr, cairo_content_t content ) ;
+
+FUNCTION: cairo_pattern_t*
+cairo_pop_group ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_pop_group_to_source ( cairo_t* cr ) ;
+
+! Modify state
+TYPEDEF: int cairo_operator_t
+C-ENUM:
+ CAIRO_OPERATOR_CLEAR
+
+ CAIRO_OPERATOR_SOURCE
+ CAIRO_OPERATOR_OVER
+ CAIRO_OPERATOR_IN
+ CAIRO_OPERATOR_OUT
+ CAIRO_OPERATOR_ATOP
+
+ CAIRO_OPERATOR_DEST
+ CAIRO_OPERATOR_DEST_OVER
+ CAIRO_OPERATOR_DEST_IN
+ CAIRO_OPERATOR_DEST_OUT
+ CAIRO_OPERATOR_DEST_ATOP
+
+ CAIRO_OPERATOR_XOR
+ CAIRO_OPERATOR_ADD
+ CAIRO_OPERATOR_SATURATE ;
+
+FUNCTION: void
+cairo_set_operator ( cairo_t* cr, cairo_operator_t op ) ;
+
+FUNCTION: void
+cairo_set_source ( cairo_t* cr, cairo_pattern_t* source ) ;
+
+FUNCTION: void
+cairo_set_source_rgb ( cairo_t* cr, double red, double green, double blue ) ;
+
+FUNCTION: void
+cairo_set_source_rgba ( cairo_t* cr, double red, double green, double blue, double alpha ) ;
+
+FUNCTION: void
+cairo_set_source_surface ( cairo_t* cr, cairo_surface_t* surface, double x, double y ) ;
+
+FUNCTION: void
+cairo_set_tolerance ( cairo_t* cr, double tolerance ) ;
+
+TYPEDEF: int cairo_antialias_t
+C-ENUM:
+ CAIRO_ANTIALIAS_DEFAULT
+ CAIRO_ANTIALIAS_NONE
+ CAIRO_ANTIALIAS_GRAY
+ CAIRO_ANTIALIAS_SUBPIXEL ;
+
+FUNCTION: void
+cairo_set_antialias ( cairo_t* cr, cairo_antialias_t antialias ) ;
+
+TYPEDEF: int cairo_fill_rule_t
+C-ENUM:
+ CAIRO_FILL_RULE_WINDING
+ CAIRO_FILL_RULE_EVEN_ODD ;
+
+FUNCTION: void
+cairo_set_fill_rule ( cairo_t* cr, cairo_fill_rule_t fill_rule ) ;
+
+FUNCTION: void
+cairo_set_line_width ( cairo_t* cr, double width ) ;
+
+TYPEDEF: int cairo_line_cap_t
+C-ENUM:
+ CAIRO_LINE_CAP_BUTT
+ CAIRO_LINE_CAP_ROUND
+ CAIRO_LINE_CAP_SQUARE ;
+
+FUNCTION: void
+cairo_set_line_cap ( cairo_t* cr, cairo_line_cap_t line_cap ) ;
+
+TYPEDEF: int cairo_line_join_t
+C-ENUM:
+ CAIRO_LINE_JOIN_MITER
+ CAIRO_LINE_JOIN_ROUND
+ CAIRO_LINE_JOIN_BEVEL ;
+
+FUNCTION: void
+cairo_set_line_join ( cairo_t* cr, cairo_line_join_t line_join ) ;
+
+FUNCTION: void
+cairo_set_dash ( cairo_t* cr, double* dashes, int num_dashes, double offset ) ;
+
+FUNCTION: void
+cairo_set_miter_limit ( cairo_t* cr, double limit ) ;
+
+FUNCTION: void
+cairo_translate ( cairo_t* cr, double tx, double ty ) ;
+
+FUNCTION: void
+cairo_scale ( cairo_t* cr, double sx, double sy ) ;
+
+FUNCTION: void
+cairo_rotate ( cairo_t* cr, double angle ) ;
+
+FUNCTION: void
+cairo_transform ( cairo_t* cr, cairo_matrix_t* matrix ) ;
+
+FUNCTION: void
+cairo_set_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
+
+FUNCTION: void
+cairo_identity_matrix ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_user_to_device ( cairo_t* cr, double* x, double* y ) ;
+
+FUNCTION: void
+cairo_user_to_device_distance ( cairo_t* cr, double* dx, double* dy ) ;
+
+FUNCTION: void
+cairo_device_to_user ( cairo_t* cr, double* x, double* y ) ;
+
+FUNCTION: void
+cairo_device_to_user_distance ( cairo_t* cr, double* dx, double* dy ) ;
+
+! Path creation functions
+FUNCTION: void
+cairo_new_path ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_move_to ( cairo_t* cr, double x, double y ) ;
+
+FUNCTION: void
+cairo_new_sub_path ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_line_to ( cairo_t* cr, double x, double y ) ;
+
+FUNCTION: void
+cairo_curve_to ( cairo_t* cr, double x1, double y1, double x2, double y2, double x3, double y3 ) ;
+
+FUNCTION: void
+cairo_arc ( cairo_t* cr, double xc, double yc, double radius, double angle1, double angle2 ) ;
+
+FUNCTION: void
+cairo_arc_negative ( cairo_t* cr, double xc, double yc, double radius, double angle1, double angle2 ) ;
+
+FUNCTION: void
+cairo_rel_move_to ( cairo_t* cr, double dx, double dy ) ;
+
+FUNCTION: void
+cairo_rel_line_to ( cairo_t* cr, double dx, double dy ) ;
+
+FUNCTION: void
+cairo_rel_curve_to ( cairo_t* cr, double dx1, double dy1, double dx2, double dy2, double dx3, double dy3 ) ;
+
+FUNCTION: void
+cairo_rectangle ( cairo_t* cr, double x, double y, double width, double height ) ;
+
+FUNCTION: void
+cairo_close_path ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_path_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
+
+! Painting functions
+FUNCTION: void
+cairo_paint ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_paint_with_alpha ( cairo_t* cr, double alpha ) ;
+
+FUNCTION: void
+cairo_mask ( cairo_t* cr, cairo_pattern_t* pattern ) ;
+
+FUNCTION: void
+cairo_mask_surface ( cairo_t* cr, cairo_surface_t* surface, double surface_x, double surface_y ) ;
+
+FUNCTION: void
+cairo_stroke ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_stroke_preserve ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_fill ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_fill_preserve ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_copy_page ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_show_page ( cairo_t* cr ) ;
+
+! Insideness testing
+FUNCTION: cairo_bool_t
+cairo_in_stroke ( cairo_t* cr, double x, double y ) ;
+
+FUNCTION: cairo_bool_t
+cairo_in_fill ( cairo_t* cr, double x, double y ) ;
+
+! Rectangular extents
+FUNCTION: void
+cairo_stroke_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
+
+FUNCTION: void
+cairo_fill_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
+
+! Clipping
+FUNCTION: void
+cairo_reset_clip ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_clip ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_clip_preserve ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_clip_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
+
+C-STRUCT: cairo_rectangle_t
+ { "double" "x" }
+ { "double" "y" }
+ { "double" "width" }
+ { "double" "height" } ;
+
+C-STRUCT: cairo_rectangle_list_t
+ { "cairo_status_t" "status" }
+ { "cairo_rectangle_t*" "rectangles" }
+ { "int" "num_rectangles" } ;
+
+FUNCTION: cairo_rectangle_list_t*
+cairo_copy_clip_rectangle_list ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_rectangle_list_destroy ( cairo_rectangle_list_t* rectangle_list ) ;
+
+! Font/Text functions
+
+TYPEDEF: void* cairo_scaled_font_t
+
+TYPEDEF: void* cairo_font_face_t
+
+C-STRUCT: cairo_glyph_t
+ { "ulong" "index" }
+ { "double" "x" }
+ { "double" "y" } ;
+
+C-STRUCT: cairo_text_extents_t
+ { "double" "x_bearing" }
+ { "double" "y_bearing" }
+ { "double" "width" }
+ { "double" "height" }
+ { "double" "x_advance" }
+ { "double" "y_advance" } ;
+
+C-STRUCT: cairo_font_extents_t
+ { "double" "ascent" }
+ { "double" "descent" }
+ { "double" "height" }
+ { "double" "max_x_advance" }
+ { "double" "max_y_advance" } ;
+
+TYPEDEF: int cairo_font_slant_t
+C-ENUM:
+ CAIRO_FONT_SLANT_NORMAL
+ CAIRO_FONT_SLANT_ITALIC
+ CAIRO_FONT_SLANT_OBLIQUE ;
+
+TYPEDEF: int cairo_font_weight_t
+C-ENUM:
+ CAIRO_FONT_WEIGHT_NORMAL
+ CAIRO_FONT_WEIGHT_BOLD ;
+
+TYPEDEF: int cairo_subpixel_order_t
+C-ENUM:
+ CAIRO_SUBPIXEL_ORDER_DEFAULT
+ CAIRO_SUBPIXEL_ORDER_RGB
+ CAIRO_SUBPIXEL_ORDER_BGR
+ CAIRO_SUBPIXEL_ORDER_VRGB
+ CAIRO_SUBPIXEL_ORDER_VBGR ;
+
+TYPEDEF: int cairo_hint_style_t
+C-ENUM:
+ CAIRO_HINT_STYLE_DEFAULT
+ CAIRO_HINT_STYLE_NONE
+ CAIRO_HINT_STYLE_SLIGHT
+ CAIRO_HINT_STYLE_MEDIUM
+ CAIRO_HINT_STYLE_FULL ;
+
+TYPEDEF: int cairo_hint_metrics_t
+C-ENUM:
+ CAIRO_HINT_METRICS_DEFAULT
+ CAIRO_HINT_METRICS_OFF
+ CAIRO_HINT_METRICS_ON ;
+
+TYPEDEF: void* cairo_font_options_t
+
+FUNCTION: cairo_font_options_t*
+cairo_font_options_create ( ) ;
+
+FUNCTION: cairo_font_options_t*
+cairo_font_options_copy ( cairo_font_options_t* original ) ;
+
+FUNCTION: void
+cairo_font_options_destroy ( cairo_font_options_t* options ) ;
+
+FUNCTION: cairo_status_t
+cairo_font_options_status ( cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_font_options_merge ( cairo_font_options_t* options, cairo_font_options_t* other ) ;
+
+FUNCTION: cairo_bool_t
+cairo_font_options_equal ( cairo_font_options_t* options, cairo_font_options_t* other ) ;
+
+FUNCTION: ulong
+cairo_font_options_hash ( cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_font_options_set_antialias ( cairo_font_options_t* options, cairo_antialias_t antialias ) ;
+
+FUNCTION: cairo_antialias_t
+cairo_font_options_get_antialias ( cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_font_options_set_subpixel_order ( cairo_font_options_t* options, cairo_subpixel_order_t subpixel_order ) ;
+
+FUNCTION: cairo_subpixel_order_t
+cairo_font_options_get_subpixel_order ( cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_font_options_set_hint_style ( cairo_font_options_t* options, cairo_hint_style_t hint_style ) ;
+
+FUNCTION: cairo_hint_style_t
+cairo_font_options_get_hint_style ( cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_font_options_set_hint_metrics ( cairo_font_options_t* options, cairo_hint_metrics_t hint_metrics ) ;
+
+FUNCTION: cairo_hint_metrics_t
+cairo_font_options_get_hint_metrics ( cairo_font_options_t* options ) ;
+
+! This interface is for dealing with text as text, not caring about the
+! font object inside the the cairo_t.
+
+FUNCTION: void
+cairo_select_font_face ( cairo_t* cr, char* family, cairo_font_slant_t slant, cairo_font_weight_t weight ) ;
+
+FUNCTION: void
+cairo_set_font_size ( cairo_t* cr, double size ) ;
+
+FUNCTION: void
+cairo_set_font_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
+
+FUNCTION: void
+cairo_get_font_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
+
+FUNCTION: void
+cairo_set_font_options ( cairo_t* cr, cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_get_font_options ( cairo_t* cr, cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_set_font_face ( cairo_t* cr, cairo_font_face_t* font_face ) ;
+
+FUNCTION: cairo_font_face_t*
+cairo_get_font_face ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_set_scaled_font ( cairo_t* cr, cairo_scaled_font_t* scaled_font ) ;
+
+FUNCTION: cairo_scaled_font_t*
+cairo_get_scaled_font ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_show_text ( cairo_t* cr, char* utf8 ) ;
+
+FUNCTION: void
+cairo_show_glyphs ( cairo_t* cr, cairo_glyph_t* glyphs, int num_glyphs ) ;
+
+FUNCTION: void
+cairo_text_path ( cairo_t* cr, char* utf8 ) ;
+
+FUNCTION: void
+cairo_glyph_path ( cairo_t* cr, cairo_glyph_t* glyphs, int num_glyphs ) ;
+
+FUNCTION: void
+cairo_text_extents ( cairo_t* cr, char* utf8, cairo_text_extents_t* extents ) ;
+
+FUNCTION: void
+cairo_glyph_extents ( cairo_t* cr, cairo_glyph_t* glyphs, int num_glyphs, cairo_text_extents_t* extents ) ;
+
+FUNCTION: void
+cairo_font_extents ( cairo_t* cr, cairo_font_extents_t* extents ) ;
+
+! Generic identifier for a font style
+
+FUNCTION: cairo_font_face_t*
+cairo_font_face_reference ( cairo_font_face_t* font_face ) ;
+
+FUNCTION: void
+cairo_font_face_destroy ( cairo_font_face_t* font_face ) ;
+
+FUNCTION: uint
+cairo_font_face_get_reference_count ( cairo_font_face_t* font_face ) ;
+
+FUNCTION: cairo_status_t
+cairo_font_face_status ( cairo_font_face_t* font_face ) ;
+
+TYPEDEF: int cairo_font_type_t
+C-ENUM:
+ CAIRO_FONT_TYPE_TOY
+ CAIRO_FONT_TYPE_FT
+ CAIRO_FONT_TYPE_WIN32
+ CAIRO_FONT_TYPE_QUARTZ ;
+
+FUNCTION: cairo_font_type_t
+cairo_font_face_get_type ( cairo_font_face_t* font_face ) ;
+
+FUNCTION: void*
+cairo_font_face_get_user_data ( cairo_font_face_t* font_face, cairo_user_data_key_t* key ) ;
+
+FUNCTION: cairo_status_t
+cairo_font_face_set_user_data ( cairo_font_face_t* font_face, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
+
+! Portable interface to general font features.
+
+FUNCTION: cairo_scaled_font_t*
+cairo_scaled_font_create ( cairo_font_face_t* font_face, cairo_matrix_t* font_matrix, cairo_matrix_t* ctm, cairo_font_options_t* options ) ;
+
+FUNCTION: cairo_scaled_font_t*
+cairo_scaled_font_reference ( cairo_scaled_font_t* scaled_font ) ;
+
+FUNCTION: void
+cairo_scaled_font_destroy ( cairo_scaled_font_t* scaled_font ) ;
+
+FUNCTION: uint
+cairo_scaled_font_get_reference_count ( cairo_scaled_font_t* scaled_font ) ;
+
+FUNCTION: cairo_status_t
+cairo_scaled_font_status ( cairo_scaled_font_t* scaled_font ) ;
+
+FUNCTION: cairo_font_type_t
+cairo_scaled_font_get_type ( cairo_scaled_font_t* scaled_font ) ;
+
+FUNCTION: void*
+cairo_scaled_font_get_user_data ( cairo_scaled_font_t* scaled_font, cairo_user_data_key_t* key ) ;
+
+FUNCTION: cairo_status_t
+cairo_scaled_font_set_user_data ( cairo_scaled_font_t* scaled_font, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
+
+FUNCTION: void
+cairo_scaled_font_extents ( cairo_scaled_font_t* scaled_font, cairo_font_extents_t* extents ) ;
+
+FUNCTION: void
+cairo_scaled_font_text_extents ( cairo_scaled_font_t* scaled_font, char* utf8, cairo_text_extents_t* extents ) ;
+
+FUNCTION: void
+cairo_scaled_font_glyph_extents ( cairo_scaled_font_t* scaled_font, cairo_glyph_t* glyphs, int num_glyphs, cairo_text_extents_t* extents ) ;
+
+FUNCTION: cairo_font_face_t*
+cairo_scaled_font_get_font_face ( cairo_scaled_font_t* scaled_font ) ;
+
+FUNCTION: void
+cairo_scaled_font_get_font_matrix ( cairo_scaled_font_t* scaled_font, cairo_matrix_t* font_matrix ) ;
+
+FUNCTION: void
+cairo_scaled_font_get_ctm ( cairo_scaled_font_t* scaled_font, cairo_matrix_t* ctm ) ;
+
+FUNCTION: void
+cairo_scaled_font_get_font_options ( cairo_scaled_font_t* scaled_font, cairo_font_options_t* options ) ;
+
+! Query functions
+
+FUNCTION: cairo_operator_t
+cairo_get_operator ( cairo_t* cr ) ;
+
+FUNCTION: cairo_pattern_t*
+cairo_get_source ( cairo_t* cr ) ;
+
+FUNCTION: double
+cairo_get_tolerance ( cairo_t* cr ) ;
+
+FUNCTION: cairo_antialias_t
+cairo_get_antialias ( cairo_t* cr ) ;
+
+FUNCTION: cairo_bool_t
+cairo_has_current_point ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_get_current_point ( cairo_t* cr, double* x, double* y ) ;
+
+FUNCTION: cairo_fill_rule_t
+cairo_get_fill_rule ( cairo_t* cr ) ;
+
+FUNCTION: double
+cairo_get_line_width ( cairo_t* cr ) ;
+
+FUNCTION: cairo_line_cap_t
+cairo_get_line_cap ( cairo_t* cr ) ;
+
+FUNCTION: cairo_line_join_t
+cairo_get_line_join ( cairo_t* cr ) ;
+
+FUNCTION: double
+cairo_get_miter_limit ( cairo_t* cr ) ;
+
+FUNCTION: int
+cairo_get_dash_count ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_get_dash ( cairo_t* cr, double* dashes, double* offset ) ;
+
+FUNCTION: void
+cairo_get_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
+
+FUNCTION: cairo_surface_t*
+cairo_get_target ( cairo_t* cr ) ;
+
+FUNCTION: cairo_surface_t*
+cairo_get_group_target ( cairo_t* cr ) ;
+
+TYPEDEF: int cairo_path_data_type_t
+C-ENUM:
+ CAIRO_PATH_MOVE_TO
+ CAIRO_PATH_LINE_TO
+ CAIRO_PATH_CURVE_TO
+ CAIRO_PATH_CLOSE_PATH ;
+
+! NEED TO DO UNION HERE
+C-STRUCT: cairo_path_data_t-point
+ { "double" "x" }
+ { "double" "y" } ;
+
+C-STRUCT: cairo_path_data_t-header
+ { "cairo_path_data_type_t" "type" }
+ { "int" "length" } ;
+
+C-UNION: cairo_path_data_t "cairo_path_data_t-point" "cairo_path_data_t-header" ;
+
+C-STRUCT: cairo_path_t
+ { "cairo_status_t" "status" }
+ { "cairo_path_data_t*" "data" }
+ { "int" "num_data" } ;
+
+FUNCTION: cairo_path_t*
+cairo_copy_path ( cairo_t* cr ) ;
+
+FUNCTION: cairo_path_t*
+cairo_copy_path_flat ( cairo_t* cr ) ;
+
+FUNCTION: void
+cairo_append_path ( cairo_t* cr, cairo_path_t* path ) ;
+
+FUNCTION: void
+cairo_path_destroy ( cairo_path_t* path ) ;
+
+! Error status queries
+
+FUNCTION: cairo_status_t
+cairo_status ( cairo_t* cr ) ;
+
+FUNCTION: char*
+cairo_status_to_string ( cairo_status_t status ) ;
+
+! Surface manipulation
+
+FUNCTION: cairo_surface_t*
+cairo_surface_create_similar ( cairo_surface_t* other, cairo_content_t content, int width, int height ) ;
+
+FUNCTION: cairo_surface_t*
+cairo_surface_reference ( cairo_surface_t* surface ) ;
+
+FUNCTION: void
+cairo_surface_finish ( cairo_surface_t* surface ) ;
+
+FUNCTION: void
+cairo_surface_destroy ( cairo_surface_t* surface ) ;
+
+FUNCTION: uint
+cairo_surface_get_reference_count ( cairo_surface_t* surface ) ;
+
+FUNCTION: cairo_status_t
+cairo_surface_status ( cairo_surface_t* surface ) ;
+
+TYPEDEF: int cairo_surface_type_t
+C-ENUM:
+ CAIRO_SURFACE_TYPE_IMAGE
+ CAIRO_SURFACE_TYPE_PDF
+ CAIRO_SURFACE_TYPE_PS
+ CAIRO_SURFACE_TYPE_XLIB
+ CAIRO_SURFACE_TYPE_XCB
+ CAIRO_SURFACE_TYPE_GLITZ
+ CAIRO_SURFACE_TYPE_QUARTZ
+ CAIRO_SURFACE_TYPE_WIN32
+ CAIRO_SURFACE_TYPE_BEOS
+ CAIRO_SURFACE_TYPE_DIRECTFB
+ CAIRO_SURFACE_TYPE_SVG
+ CAIRO_SURFACE_TYPE_OS2
+ CAIRO_SURFACE_TYPE_WIN32_PRINTING
+ CAIRO_SURFACE_TYPE_QUARTZ_IMAGE ;
+
+FUNCTION: cairo_surface_type_t
+cairo_surface_get_type ( cairo_surface_t* surface ) ;
+
+FUNCTION: cairo_content_t
+cairo_surface_get_content ( cairo_surface_t* surface ) ;
+
+FUNCTION: cairo_status_t
+cairo_surface_write_to_png ( cairo_surface_t* surface, char* filename ) ;
+
+FUNCTION: cairo_status_t
+cairo_surface_write_to_png_stream ( cairo_surface_t* surface, cairo_write_func_t write_func, void* closure ) ;
+
+FUNCTION: void*
+cairo_surface_get_user_data ( cairo_surface_t* surface, cairo_user_data_key_t* key ) ;
+
+FUNCTION: cairo_status_t
+cairo_surface_set_user_data ( cairo_surface_t* surface, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
+
+FUNCTION: void
+cairo_surface_get_font_options ( cairo_surface_t* surface, cairo_font_options_t* options ) ;
+
+FUNCTION: void
+cairo_surface_flush ( cairo_surface_t* surface ) ;
+
+FUNCTION: void
+cairo_surface_mark_dirty ( cairo_surface_t* surface ) ;
+
+FUNCTION: void
+cairo_surface_mark_dirty_rectangle ( cairo_surface_t* surface, int x, int y, int width, int height ) ;
+
+FUNCTION: void
+cairo_surface_set_device_offset ( cairo_surface_t* surface, double x_offset, double y_offset ) ;
+
+FUNCTION: void
+cairo_surface_get_device_offset ( cairo_surface_t* surface, double* x_offset, double* y_offset ) ;
+
+FUNCTION: void
+cairo_surface_set_fallback_resolution ( cairo_surface_t* surface, double x_pixels_per_inch, double y_pixels_per_inch ) ;
+
+FUNCTION: void
+cairo_surface_copy_page ( cairo_surface_t* surface ) ;
+
+FUNCTION: void
+cairo_surface_show_page ( cairo_surface_t* surface ) ;
+
+! Image-surface functions
+
+TYPEDEF: int cairo_format_t
+C-ENUM:
+ CAIRO_FORMAT_ARGB32
+ CAIRO_FORMAT_RGB24
+ CAIRO_FORMAT_A8
+ CAIRO_FORMAT_A1
+ CAIRO_FORMAT_RGB16_565 ;
+
+FUNCTION: cairo_surface_t*
+cairo_image_surface_create ( cairo_format_t format, int width, int height ) ;
+
+FUNCTION: int
+cairo_format_stride_for_width ( cairo_format_t format, int width ) ;
+
+FUNCTION: cairo_surface_t*
+cairo_image_surface_create_for_data ( uchar* data, cairo_format_t format, int width, int height, int stride ) ;
+
+FUNCTION: uchar*
+cairo_image_surface_get_data ( cairo_surface_t* surface ) ;
+
+FUNCTION: cairo_format_t
+cairo_image_surface_get_format ( cairo_surface_t* surface ) ;
+
+FUNCTION: int
+cairo_image_surface_get_width ( cairo_surface_t* surface ) ;
+
+FUNCTION: int
+cairo_image_surface_get_height ( cairo_surface_t* surface ) ;
+
+FUNCTION: int
+cairo_image_surface_get_stride ( cairo_surface_t* surface ) ;
+
+FUNCTION: cairo_surface_t*
+cairo_image_surface_create_from_png ( char* filename ) ;
+
+FUNCTION: cairo_surface_t*
+cairo_image_surface_create_from_png_stream ( cairo_read_func_t read_func, void* closure ) ;
+
+! Pattern creation functions
+
+FUNCTION: cairo_pattern_t*
+cairo_pattern_create_rgb ( double red, double green, double blue ) ;
+
+FUNCTION: cairo_pattern_t*
+cairo_pattern_create_rgba ( double red, double green, double blue, double alpha ) ;
+
+FUNCTION: cairo_pattern_t*
+cairo_pattern_create_for_surface ( cairo_surface_t* surface ) ;
+
+FUNCTION: cairo_pattern_t*
+cairo_pattern_create_linear ( double x0, double y0, double x1, double y1 ) ;
+
+FUNCTION: cairo_pattern_t*
+cairo_pattern_create_radial ( double cx0, double cy0, double radius0, double cx1, double cy1, double radius1 ) ;
+
+FUNCTION: cairo_pattern_t*
+cairo_pattern_reference ( cairo_pattern_t* pattern ) ;
+
+FUNCTION: void
+cairo_pattern_destroy ( cairo_pattern_t* pattern ) ;
+
+FUNCTION: uint
+cairo_pattern_get_reference_count ( cairo_pattern_t* pattern ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_status ( cairo_pattern_t* pattern ) ;
+
+FUNCTION: void*
+cairo_pattern_get_user_data ( cairo_pattern_t* pattern, cairo_user_data_key_t* key ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_set_user_data ( cairo_pattern_t* pattern, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
+
+TYPEDEF: int cairo_pattern_type_t
+C-ENUM:
+ CAIRO_PATTERN_TYPE_SOLID
+ CAIRO_PATTERN_TYPE_SURFACE
+ CAIRO_PATTERN_TYPE_LINEAR
+ CAIRO_PATTERN_TYPE_RADIA ;
+
+FUNCTION: cairo_pattern_type_t
+cairo_pattern_get_type ( cairo_pattern_t* pattern ) ;
+
+FUNCTION: void
+cairo_pattern_add_color_stop_rgb ( cairo_pattern_t* pattern, double offset, double red, double green, double blue ) ;
+
+FUNCTION: void
+cairo_pattern_add_color_stop_rgba ( cairo_pattern_t* pattern, double offset, double red, double green, double blue, double alpha ) ;
+
+FUNCTION: void
+cairo_pattern_set_matrix ( cairo_pattern_t* pattern, cairo_matrix_t* matrix ) ;
+
+FUNCTION: void
+cairo_pattern_get_matrix ( cairo_pattern_t* pattern, cairo_matrix_t* matrix ) ;
+
+TYPEDEF: int cairo_extend_t
+C-ENUM:
+ CAIRO_EXTEND_NONE
+ CAIRO_EXTEND_REPEAT
+ CAIRO_EXTEND_REFLECT
+ CAIRO_EXTEND_PAD ;
+
+FUNCTION: void
+cairo_pattern_set_extend ( cairo_pattern_t* pattern, cairo_extend_t extend ) ;
+
+FUNCTION: cairo_extend_t
+cairo_pattern_get_extend ( cairo_pattern_t* pattern ) ;
+
+TYPEDEF: int cairo_filter_t
+C-ENUM:
+ CAIRO_FILTER_FAST
+ CAIRO_FILTER_GOOD
+ CAIRO_FILTER_BEST
+ CAIRO_FILTER_NEAREST
+ CAIRO_FILTER_BILINEAR
+ CAIRO_FILTER_GAUSSIAN ;
+
+FUNCTION: void
+cairo_pattern_set_filter ( cairo_pattern_t* pattern, cairo_filter_t filter ) ;
+
+FUNCTION: cairo_filter_t
+cairo_pattern_get_filter ( cairo_pattern_t* pattern ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_get_rgba ( cairo_pattern_t* pattern, double* red, double* green, double* blue, double* alpha ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_get_surface ( cairo_pattern_t* pattern, cairo_surface_t* *surface ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_get_color_stop_rgba ( cairo_pattern_t* pattern, int index, double* offset, double* red, double* green, double* blue, double* alpha ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_get_color_stop_count ( cairo_pattern_t* pattern, int* count ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_get_linear_points ( cairo_pattern_t* pattern, double* x0, double* y0, double* x1, double* y1 ) ;
+
+FUNCTION: cairo_status_t
+cairo_pattern_get_radial_circles ( cairo_pattern_t* pattern, double* x0, double* y0, double* r0, double* x1, double* y1, double* r1 ) ;
+
+! Matrix functions
+
+FUNCTION: void
+cairo_matrix_init ( cairo_matrix_t* matrix, double xx, double yx, double xy, double yy, double x0, double y0 ) ;
+
+FUNCTION: void
+cairo_matrix_init_identity ( cairo_matrix_t* matrix ) ;
+
+FUNCTION: void
+cairo_matrix_init_translate ( cairo_matrix_t* matrix, double tx, double ty ) ;
+
+FUNCTION: void
+cairo_matrix_init_scale ( cairo_matrix_t* matrix, double sx, double sy ) ;
+
+FUNCTION: void
+cairo_matrix_init_rotate ( cairo_matrix_t* matrix, double radians ) ;
+
+FUNCTION: void
+cairo_matrix_translate ( cairo_matrix_t* matrix, double tx, double ty ) ;
+
+FUNCTION: void
+cairo_matrix_scale ( cairo_matrix_t* matrix, double sx, double sy ) ;
+
+FUNCTION: void
+cairo_matrix_rotate ( cairo_matrix_t* matrix, double radians ) ;
+
+FUNCTION: cairo_status_t
+cairo_matrix_invert ( cairo_matrix_t* matrix ) ;
+
+FUNCTION: void
+cairo_matrix_multiply ( cairo_matrix_t* result, cairo_matrix_t* a, cairo_matrix_t* b ) ;
+
+FUNCTION: void
+cairo_matrix_transform_distance ( cairo_matrix_t* matrix, double* dx, double* dy ) ;
+
+FUNCTION: void
+cairo_matrix_transform_point ( cairo_matrix_t* matrix, double* x, double* y ) ;
+
+! Functions to be used while debugging (not intended for use in production code)
+FUNCTION: void
+cairo_debug_reset_static_data ( ) ;
--- /dev/null
+! Copyright (C) 2008 Matthew Willis.
+! See http://factorcode.org/license.txt for BSD license.
+USING: sequences math opengl.gadgets kernel
+byte-arrays cairo.ffi cairo io.backend
+ui.gadgets accessors opengl.gl
+arrays fry classes ;
+
+IN: cairo.gadgets
+
+: width>stride ( width -- stride ) 4 * ;
+
+: copy-cairo ( dim quot -- byte-array )
+ >r first2 over width>stride
+ [ * nip <byte-array> dup CAIRO_FORMAT_ARGB32 ]
+ [ cairo_image_surface_create_for_data ] 3bi
+ r> with-cairo-from-surface ; inline
+
+TUPLE: cairo-gadget < texture-gadget ;
+
+: <cairo-gadget> ( dim -- gadget )
+ cairo-gadget new-gadget
+ swap >>dim ;
+
+M: cairo-gadget cache-key* [ dim>> ] [ class ] bi 2array ;
+
+: render-cairo ( dim quot -- bytes format )
+ >r 2^-bounds r> copy-cairo GL_BGRA ; inline
+
+GENERIC: render-cairo* ( gadget -- )
+
+M: cairo-gadget render*
+ [ dim>> dup ] [ '[ _ render-cairo* ] ] bi
+ render-cairo render-bytes* ;
+
+! maybe also texture>png
+! : cairo>png ( gadget path -- )
+! >r [ cairo>bytes CAIRO_FORMAT_ARGB32 ] [ width>> ]
+! [ height>> ] tri over width>stride
+! cairo_image_surface_create_for_data
+! r> [ cairo_surface_write_to_png check-cairo ] curry with-surface ;
+
+: copy-surface ( surface -- )
+ cr swap 0 0 cairo_set_source_surface
+ cr cairo_paint ;
+
+TUPLE: png-gadget < texture-gadget path ;
+: <png> ( path -- gadget )
+ png-gadget new-gadget
+ swap >>path ;
+
+M: png-gadget render*
+ path>> normalize-path cairo_image_surface_create_from_png
+ [ cairo_image_surface_get_width ]
+ [ cairo_image_surface_get_height 2array dup 2^-bounds ]
+ [ [ copy-surface ] curry copy-cairo ] tri
+ GL_BGRA render-bytes* ;
+
+M: png-gadget cache-key* path>> ;
--- /dev/null
+! Copyright (C) 2008 Matthew Willis
+! See http://factorcode.org/license.txt for BSD license.
+!
+! these samples are a subset of the samples on
+! http://cairographics.org/samples/
+USING: cairo cairo.ffi locals math.constants math
+io.backend kernel alien.c-types libc namespaces
+cairo.gadgets ui.gadgets accessors ;
+
+IN: cairo.samples
+
+TUPLE: arc-gadget < cairo-gadget ;
+M:: arc-gadget render-cairo* ( gadget -- )
+ [let | xc [ 128.0 ]
+ yc [ 128.0 ]
+ radius [ 100.0 ]
+ angle1 [ pi 1/4 * ]
+ angle2 [ pi ] |
+ cr 10.0 cairo_set_line_width
+ cr xc yc radius angle1 angle2 cairo_arc
+ cr cairo_stroke
+
+ ! draw helping lines
+ cr 1 0.2 0.2 0.6 cairo_set_source_rgba
+ cr 6.0 cairo_set_line_width
+
+ cr xc yc 10.0 0 2 pi * cairo_arc
+ cr cairo_fill
+
+ cr xc yc radius angle1 angle1 cairo_arc
+ cr xc yc cairo_line_to
+ cr xc yc radius angle2 angle2 cairo_arc
+ cr xc yc cairo_line_to
+ cr cairo_stroke
+ ] ;
+
+TUPLE: clip-gadget < cairo-gadget ;
+M: clip-gadget render-cairo* ( gadget -- )
+ drop
+ cr 128 128 76.8 0 2 pi * cairo_arc
+ cr cairo_clip
+ cr cairo_new_path
+
+ cr 0 0 256 256 cairo_rectangle
+ cr cairo_fill
+ cr 0 1 0 cairo_set_source_rgb
+ cr 0 0 cairo_move_to
+ cr 256 256 cairo_line_to
+ cr 256 0 cairo_move_to
+ cr 0 256 cairo_line_to
+ cr 10 cairo_set_line_width
+ cr cairo_stroke ;
+
+TUPLE: clip-image-gadget < cairo-gadget ;
+M:: clip-image-gadget render-cairo* ( gadget -- )
+ [let* | png [ "resource:misc/icons/Factor_128x128.png"
+ normalize-path cairo_image_surface_create_from_png ]
+ w [ png cairo_image_surface_get_width ]
+ h [ png cairo_image_surface_get_height ] |
+ cr 128 128 76.8 0 2 pi * cairo_arc
+ cr cairo_clip
+ cr cairo_new_path
+
+ cr 192.0 w / 192.0 h / cairo_scale
+ cr png 32 32 cairo_set_source_surface
+ cr cairo_paint
+ png cairo_surface_destroy
+ ] ;
+
+TUPLE: dash-gadget < cairo-gadget ;
+M:: dash-gadget render-cairo* ( gadget -- )
+ [let | dashes [ { 50 10 10 10 } >c-double-array ]
+ ndash [ 4 ] |
+ cr dashes ndash -50 cairo_set_dash
+ cr 10 cairo_set_line_width
+ cr 128.0 25.6 cairo_move_to
+ cr 230.4 230.4 cairo_line_to
+ cr -102.4 0 cairo_rel_line_to
+ cr 51.2 230.4 51.2 128.0 128.0 128.0 cairo_curve_to
+ cr cairo_stroke
+ ] ;
+
+TUPLE: gradient-gadget < cairo-gadget ;
+M:: gradient-gadget render-cairo* ( gadget -- )
+ [let | pat [ 0 0 0 256 cairo_pattern_create_linear ]
+ radial [ 115.2 102.4 25.6 102.4 102.4 128.0
+ cairo_pattern_create_radial ] |
+ pat 1 0 0 0 1 cairo_pattern_add_color_stop_rgba
+ pat 0 1 1 1 1 cairo_pattern_add_color_stop_rgba
+ cr 0 0 256 256 cairo_rectangle
+ cr pat cairo_set_source
+ cr cairo_fill
+ pat cairo_pattern_destroy
+
+ radial 0 1 1 1 1 cairo_pattern_add_color_stop_rgba
+ radial 1 0 0 0 1 cairo_pattern_add_color_stop_rgba
+ cr radial cairo_set_source
+ cr 128.0 128.0 76.8 0 2 pi * cairo_arc
+ cr cairo_fill
+ radial cairo_pattern_destroy
+ ] ;
+
+TUPLE: text-gadget < cairo-gadget ;
+M: text-gadget render-cairo* ( gadget -- )
+ drop
+ cr "Serif" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_BOLD
+ cairo_select_font_face
+ cr 50 cairo_set_font_size
+ cr 10 135 cairo_move_to
+ cr "Hello" cairo_show_text
+
+ cr 70 165 cairo_move_to
+ cr "factor" cairo_text_path
+ cr 0.5 0.5 1 cairo_set_source_rgb
+ cr cairo_fill_preserve
+ cr 0 0 0 cairo_set_source_rgb
+ cr 2.56 cairo_set_line_width
+ cr cairo_stroke
+
+ ! draw helping lines
+ cr 1 0.2 0.2 0.6 cairo_set_source_rgba
+ cr 10 135 5.12 0 2 pi * cairo_arc
+ cr cairo_close_path
+ cr 70 165 5.12 0 2 pi * cairo_arc
+ cr cairo_fill ;
+
+TUPLE: utf8-gadget < cairo-gadget ;
+M: utf8-gadget render-cairo* ( gadget -- )
+ drop
+ cr "Sans" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_NORMAL
+ cairo_select_font_face
+ cr 50 cairo_set_font_size
+ "cairo_text_extents_t" malloc-object
+ cr "日本語" pick cairo_text_extents
+ cr over
+ [ cairo_text_extents_t-width 2 / ]
+ [ cairo_text_extents_t-x_bearing ] bi +
+ 128 swap - pick
+ [ cairo_text_extents_t-height 2 / ]
+ [ cairo_text_extents_t-y_bearing ] bi +
+ 128 swap - cairo_move_to
+ free
+ cr "日本語" cairo_show_text
+
+ cr 1 0.2 0.2 0.6 cairo_set_source_rgba
+ cr 6 cairo_set_line_width
+ cr 128 0 cairo_move_to
+ cr 0 256 cairo_rel_line_to
+ cr 0 128 cairo_move_to
+ cr 256 0 cairo_rel_line_to
+ cr cairo_stroke ;
+
+ USING: quotations cairo.gadgets ui.gadgets.panes sequences ;
+ : samples ( -- )
+ {
+ arc-gadget clip-gadget clip-image-gadget dash-gadget
+ gradient-gadget text-gadget utf8-gadget
+ }
+ [ new-gadget { 256 256 } >>dim gadget. ] each ;
+
+ MAIN: samples
--- /dev/null
+Cairo graphics library binding
+++ /dev/null
-Sampo Vuori
+++ /dev/null
-! Cairo "Hello World" demo
-! Copyright (c) 2007 Sampo Vuori
-! License: http://factorcode.org/license.txt
-!
-! This example is an adaptation of the following cairo sample code:
-! http://cairographics.org/samples/text/
-
-
-USING: cairo.ffi math math.constants byte-arrays kernel ui ui.render
- ui.gadgets opengl.gl accessors ;
-
-IN: cairo-demo
-
-
-: make-image-array ( -- array )
- 384 256 4 * * <byte-array> ;
-
-: convert-array-to-surface ( array -- cairo_surface_t )
- CAIRO_FORMAT_ARGB32 384 256 over 4 *
- cairo_image_surface_create_for_data ;
-
-
-TUPLE: cairo-demo-gadget < gadget image-array cairo-t ;
-
-M: cairo-demo-gadget draw-gadget* ( gadget -- )
- 0 0 glRasterPos2i
- 1.0 -1.0 glPixelZoom
- >r 384 256 GL_RGBA GL_UNSIGNED_BYTE r>
- image-array>> glDrawPixels ;
-
-: create-surface ( gadget -- cairo_surface_t )
- make-image-array [ swap (>>image-array) ] keep
- convert-array-to-surface ;
-
-: init-cairo ( gadget -- cairo_t )
- create-surface cairo_create ;
-
-M: cairo-demo-gadget pref-dim* drop { 384 256 0 } ;
-
-: draw-hello-world ( gadget -- )
- cairo-t>>
- dup "Sans" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_BOLD cairo_select_font_face
- dup 90.0 cairo_set_font_size
- dup 10.0 135.0 cairo_move_to
- dup "Hello" cairo_show_text
- dup 70.0 165.0 cairo_move_to
- dup "World" cairo_text_path
- dup 0.5 0.5 1 cairo_set_source_rgb
- dup cairo_fill_preserve
- dup 0 0 0 cairo_set_source_rgb
- dup 2.56 cairo_set_line_width
- dup cairo_stroke
- dup 1 0.2 0.2 0.6 cairo_set_source_rgba
- dup 10.0 135.0 5.12 0 pi 2 * cairo_arc
- dup cairo_close_path
- dup 70.0 165.0 5.12 0 pi 2 * cairo_arc
- cairo_fill ;
-
-M: cairo-demo-gadget graft* ( gadget -- )
- dup dup init-cairo swap (>>cairo-t) draw-hello-world ;
-
-M: cairo-demo-gadget ungraft* ( gadget -- )
- cairo-t>> cairo_destroy ;
-
-: <cairo-demo-gadget> ( -- gadget )
- cairo-demo-gadget new-gadget ;
-
-: run ( -- )
- [
- <cairo-demo-gadget> "Hello World from Factor!" open-window
- ] with-ui ;
-
-MAIN: run
+++ /dev/null
-Sampo Vuori
-Doug Coleman
+++ /dev/null
-! Copyright (C) 2008 Doug Coleman.
-! See http://factorcode.org/license.txt for BSD license.
-USING: cairo.ffi kernel accessors sequences
-namespaces fry continuations destructors ;
-IN: cairo
-
-TUPLE: cairo-t alien ;
-C: <cairo-t> cairo-t
-M: cairo-t dispose ( alien -- ) alien>> cairo_destroy ;
-
-TUPLE: cairo-surface-t alien ;
-C: <cairo-surface-t> cairo-surface-t
-M: cairo-surface-t dispose ( alien -- ) alien>> cairo_surface_destroy ;
-
-: check-cairo ( cairo_status_t -- )
- dup CAIRO_STATUS_SUCCESS = [ drop ]
- [ cairo_status_to_string "Cairo error: " prepend throw ] if ;
-
-SYMBOL: cairo
-: cr ( -- cairo ) cairo get ;
-
-: (with-cairo) ( cairo-t quot -- )
- >r alien>> cairo r> [ cr cairo_status check-cairo ]
- compose with-variable ; inline
-
-: with-cairo ( cairo quot -- )
- >r <cairo-t> r> [ (with-cairo) ] curry with-disposal ; inline
-
-: (with-surface) ( cairo-surface-t quot -- )
- >r alien>> r> [ cairo_surface_status check-cairo ] bi ; inline
-
-: with-surface ( cairo_surface quot -- )
- >r <cairo-surface-t> r> [ (with-surface) ] curry with-disposal ; inline
-
-: with-cairo-from-surface ( cairo_surface quot -- )
- '[ cairo_create _ with-cairo ] with-surface ; inline
+++ /dev/null
-! Copyright (c) 2007 Sampo Vuori
-! Copyright (c) 2008 Matthew Willis
-!
-! Adapted from cairo.h, version 1.5.14
-! License: http://factorcode.org/license.txt
-
-USING: system combinators alien alien.syntax kernel
-alien.c-types accessors sequences arrays ui.gadgets ;
-
-IN: cairo.ffi
-<< "cairo" {
- { [ os winnt? ] [ "libcairo-2.dll" ] }
- { [ os macosx? ] [ "/opt/local/lib/libcairo.dylib" ] }
- { [ os unix? ] [ "libcairo.so.2" ] }
-} cond "cdecl" add-library >>
-
-LIBRARY: cairo
-
-FUNCTION: int cairo_version ( ) ;
-FUNCTION: char* cairo_version_string ( ) ;
-
-TYPEDEF: int cairo_bool_t
-
-! I am leaving these and other void* types as opaque structures
-TYPEDEF: void* cairo_t
-TYPEDEF: void* cairo_surface_t
-
-C-STRUCT: cairo_matrix_t
- { "double" "xx" }
- { "double" "yx" }
- { "double" "xy" }
- { "double" "yy" }
- { "double" "x0" }
- { "double" "y0" } ;
-
-TYPEDEF: void* cairo_pattern_t
-
-TYPEDEF: void* cairo_destroy_func_t
-: cairo-destroy-func ( quot -- callback )
- >r "void" { "void*" } "cdecl" r> alien-callback ; inline
-
-! See cairo.h for details
-C-STRUCT: cairo_user_data_key_t
- { "int" "unused" } ;
-
-TYPEDEF: int cairo_status_t
-C-ENUM:
- CAIRO_STATUS_SUCCESS
- CAIRO_STATUS_NO_MEMORY
- CAIRO_STATUS_INVALID_RESTORE
- CAIRO_STATUS_INVALID_POP_GROUP
- CAIRO_STATUS_NO_CURRENT_POINT
- CAIRO_STATUS_INVALID_MATRIX
- CAIRO_STATUS_INVALID_STATUS
- CAIRO_STATUS_NULL_POINTER
- CAIRO_STATUS_INVALID_STRING
- CAIRO_STATUS_INVALID_PATH_DATA
- CAIRO_STATUS_READ_ERROR
- CAIRO_STATUS_WRITE_ERROR
- CAIRO_STATUS_SURFACE_FINISHED
- CAIRO_STATUS_SURFACE_TYPE_MISMATCH
- CAIRO_STATUS_PATTERN_TYPE_MISMATCH
- CAIRO_STATUS_INVALID_CONTENT
- CAIRO_STATUS_INVALID_FORMAT
- CAIRO_STATUS_INVALID_VISUAL
- CAIRO_STATUS_FILE_NOT_FOUND
- CAIRO_STATUS_INVALID_DASH
- CAIRO_STATUS_INVALID_DSC_COMMENT
- CAIRO_STATUS_INVALID_INDEX
- CAIRO_STATUS_CLIP_NOT_REPRESENTABLE
- CAIRO_STATUS_TEMP_FILE_ERROR
- CAIRO_STATUS_INVALID_STRIDE ;
-
-TYPEDEF: int cairo_content_t
-: CAIRO_CONTENT_COLOR HEX: 1000 ;
-: CAIRO_CONTENT_ALPHA HEX: 2000 ;
-: CAIRO_CONTENT_COLOR_ALPHA HEX: 3000 ;
-
-TYPEDEF: void* cairo_write_func_t
-: cairo-write-func ( quot -- callback )
- >r "cairo_status_t" { "void*" "uchar*" "int" }
- "cdecl" r> alien-callback ; inline
-
-TYPEDEF: void* cairo_read_func_t
-: cairo-read-func ( quot -- callback )
- >r "cairo_status_t" { "void*" "uchar*" "int" }
- "cdecl" r> alien-callback ; inline
-
-! Functions for manipulating state objects
-FUNCTION: cairo_t*
-cairo_create ( cairo_surface_t* target ) ;
-
-FUNCTION: cairo_t*
-cairo_reference ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_destroy ( cairo_t* cr ) ;
-
-FUNCTION: uint
-cairo_get_reference_count ( cairo_t* cr ) ;
-
-FUNCTION: void*
-cairo_get_user_data ( cairo_t* cr, cairo_user_data_key_t* key ) ;
-
-FUNCTION: cairo_status_t
-cairo_set_user_data ( cairo_t* cr, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
-
-FUNCTION: void
-cairo_save ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_restore ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_push_group ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_push_group_with_content ( cairo_t* cr, cairo_content_t content ) ;
-
-FUNCTION: cairo_pattern_t*
-cairo_pop_group ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_pop_group_to_source ( cairo_t* cr ) ;
-
-! Modify state
-TYPEDEF: int cairo_operator_t
-C-ENUM:
- CAIRO_OPERATOR_CLEAR
-
- CAIRO_OPERATOR_SOURCE
- CAIRO_OPERATOR_OVER
- CAIRO_OPERATOR_IN
- CAIRO_OPERATOR_OUT
- CAIRO_OPERATOR_ATOP
-
- CAIRO_OPERATOR_DEST
- CAIRO_OPERATOR_DEST_OVER
- CAIRO_OPERATOR_DEST_IN
- CAIRO_OPERATOR_DEST_OUT
- CAIRO_OPERATOR_DEST_ATOP
-
- CAIRO_OPERATOR_XOR
- CAIRO_OPERATOR_ADD
- CAIRO_OPERATOR_SATURATE ;
-
-FUNCTION: void
-cairo_set_operator ( cairo_t* cr, cairo_operator_t op ) ;
-
-FUNCTION: void
-cairo_set_source ( cairo_t* cr, cairo_pattern_t* source ) ;
-
-FUNCTION: void
-cairo_set_source_rgb ( cairo_t* cr, double red, double green, double blue ) ;
-
-FUNCTION: void
-cairo_set_source_rgba ( cairo_t* cr, double red, double green, double blue, double alpha ) ;
-
-FUNCTION: void
-cairo_set_source_surface ( cairo_t* cr, cairo_surface_t* surface, double x, double y ) ;
-
-FUNCTION: void
-cairo_set_tolerance ( cairo_t* cr, double tolerance ) ;
-
-TYPEDEF: int cairo_antialias_t
-C-ENUM:
- CAIRO_ANTIALIAS_DEFAULT
- CAIRO_ANTIALIAS_NONE
- CAIRO_ANTIALIAS_GRAY
- CAIRO_ANTIALIAS_SUBPIXEL ;
-
-FUNCTION: void
-cairo_set_antialias ( cairo_t* cr, cairo_antialias_t antialias ) ;
-
-TYPEDEF: int cairo_fill_rule_t
-C-ENUM:
- CAIRO_FILL_RULE_WINDING
- CAIRO_FILL_RULE_EVEN_ODD ;
-
-FUNCTION: void
-cairo_set_fill_rule ( cairo_t* cr, cairo_fill_rule_t fill_rule ) ;
-
-FUNCTION: void
-cairo_set_line_width ( cairo_t* cr, double width ) ;
-
-TYPEDEF: int cairo_line_cap_t
-C-ENUM:
- CAIRO_LINE_CAP_BUTT
- CAIRO_LINE_CAP_ROUND
- CAIRO_LINE_CAP_SQUARE ;
-
-FUNCTION: void
-cairo_set_line_cap ( cairo_t* cr, cairo_line_cap_t line_cap ) ;
-
-TYPEDEF: int cairo_line_join_t
-C-ENUM:
- CAIRO_LINE_JOIN_MITER
- CAIRO_LINE_JOIN_ROUND
- CAIRO_LINE_JOIN_BEVEL ;
-
-FUNCTION: void
-cairo_set_line_join ( cairo_t* cr, cairo_line_join_t line_join ) ;
-
-FUNCTION: void
-cairo_set_dash ( cairo_t* cr, double* dashes, int num_dashes, double offset ) ;
-
-FUNCTION: void
-cairo_set_miter_limit ( cairo_t* cr, double limit ) ;
-
-FUNCTION: void
-cairo_translate ( cairo_t* cr, double tx, double ty ) ;
-
-FUNCTION: void
-cairo_scale ( cairo_t* cr, double sx, double sy ) ;
-
-FUNCTION: void
-cairo_rotate ( cairo_t* cr, double angle ) ;
-
-FUNCTION: void
-cairo_transform ( cairo_t* cr, cairo_matrix_t* matrix ) ;
-
-FUNCTION: void
-cairo_set_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
-
-FUNCTION: void
-cairo_identity_matrix ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_user_to_device ( cairo_t* cr, double* x, double* y ) ;
-
-FUNCTION: void
-cairo_user_to_device_distance ( cairo_t* cr, double* dx, double* dy ) ;
-
-FUNCTION: void
-cairo_device_to_user ( cairo_t* cr, double* x, double* y ) ;
-
-FUNCTION: void
-cairo_device_to_user_distance ( cairo_t* cr, double* dx, double* dy ) ;
-
-! Path creation functions
-FUNCTION: void
-cairo_new_path ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_move_to ( cairo_t* cr, double x, double y ) ;
-
-FUNCTION: void
-cairo_new_sub_path ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_line_to ( cairo_t* cr, double x, double y ) ;
-
-FUNCTION: void
-cairo_curve_to ( cairo_t* cr, double x1, double y1, double x2, double y2, double x3, double y3 ) ;
-
-FUNCTION: void
-cairo_arc ( cairo_t* cr, double xc, double yc, double radius, double angle1, double angle2 ) ;
-
-FUNCTION: void
-cairo_arc_negative ( cairo_t* cr, double xc, double yc, double radius, double angle1, double angle2 ) ;
-
-FUNCTION: void
-cairo_rel_move_to ( cairo_t* cr, double dx, double dy ) ;
-
-FUNCTION: void
-cairo_rel_line_to ( cairo_t* cr, double dx, double dy ) ;
-
-FUNCTION: void
-cairo_rel_curve_to ( cairo_t* cr, double dx1, double dy1, double dx2, double dy2, double dx3, double dy3 ) ;
-
-FUNCTION: void
-cairo_rectangle ( cairo_t* cr, double x, double y, double width, double height ) ;
-
-FUNCTION: void
-cairo_close_path ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_path_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
-
-! Painting functions
-FUNCTION: void
-cairo_paint ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_paint_with_alpha ( cairo_t* cr, double alpha ) ;
-
-FUNCTION: void
-cairo_mask ( cairo_t* cr, cairo_pattern_t* pattern ) ;
-
-FUNCTION: void
-cairo_mask_surface ( cairo_t* cr, cairo_surface_t* surface, double surface_x, double surface_y ) ;
-
-FUNCTION: void
-cairo_stroke ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_stroke_preserve ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_fill ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_fill_preserve ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_copy_page ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_show_page ( cairo_t* cr ) ;
-
-! Insideness testing
-FUNCTION: cairo_bool_t
-cairo_in_stroke ( cairo_t* cr, double x, double y ) ;
-
-FUNCTION: cairo_bool_t
-cairo_in_fill ( cairo_t* cr, double x, double y ) ;
-
-! Rectangular extents
-FUNCTION: void
-cairo_stroke_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
-
-FUNCTION: void
-cairo_fill_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
-
-! Clipping
-FUNCTION: void
-cairo_reset_clip ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_clip ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_clip_preserve ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_clip_extents ( cairo_t* cr, double* x1, double* y1, double* x2, double* y2 ) ;
-
-C-STRUCT: cairo_rectangle_t
- { "double" "x" }
- { "double" "y" }
- { "double" "width" }
- { "double" "height" } ;
-
-C-STRUCT: cairo_rectangle_list_t
- { "cairo_status_t" "status" }
- { "cairo_rectangle_t*" "rectangles" }
- { "int" "num_rectangles" } ;
-
-FUNCTION: cairo_rectangle_list_t*
-cairo_copy_clip_rectangle_list ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_rectangle_list_destroy ( cairo_rectangle_list_t* rectangle_list ) ;
-
-! Font/Text functions
-
-TYPEDEF: void* cairo_scaled_font_t
-
-TYPEDEF: void* cairo_font_face_t
-
-C-STRUCT: cairo_glyph_t
- { "ulong" "index" }
- { "double" "x" }
- { "double" "y" } ;
-
-C-STRUCT: cairo_text_extents_t
- { "double" "x_bearing" }
- { "double" "y_bearing" }
- { "double" "width" }
- { "double" "height" }
- { "double" "x_advance" }
- { "double" "y_advance" } ;
-
-C-STRUCT: cairo_font_extents_t
- { "double" "ascent" }
- { "double" "descent" }
- { "double" "height" }
- { "double" "max_x_advance" }
- { "double" "max_y_advance" } ;
-
-TYPEDEF: int cairo_font_slant_t
-C-ENUM:
- CAIRO_FONT_SLANT_NORMAL
- CAIRO_FONT_SLANT_ITALIC
- CAIRO_FONT_SLANT_OBLIQUE ;
-
-TYPEDEF: int cairo_font_weight_t
-C-ENUM:
- CAIRO_FONT_WEIGHT_NORMAL
- CAIRO_FONT_WEIGHT_BOLD ;
-
-TYPEDEF: int cairo_subpixel_order_t
-C-ENUM:
- CAIRO_SUBPIXEL_ORDER_DEFAULT
- CAIRO_SUBPIXEL_ORDER_RGB
- CAIRO_SUBPIXEL_ORDER_BGR
- CAIRO_SUBPIXEL_ORDER_VRGB
- CAIRO_SUBPIXEL_ORDER_VBGR ;
-
-TYPEDEF: int cairo_hint_style_t
-C-ENUM:
- CAIRO_HINT_STYLE_DEFAULT
- CAIRO_HINT_STYLE_NONE
- CAIRO_HINT_STYLE_SLIGHT
- CAIRO_HINT_STYLE_MEDIUM
- CAIRO_HINT_STYLE_FULL ;
-
-TYPEDEF: int cairo_hint_metrics_t
-C-ENUM:
- CAIRO_HINT_METRICS_DEFAULT
- CAIRO_HINT_METRICS_OFF
- CAIRO_HINT_METRICS_ON ;
-
-TYPEDEF: void* cairo_font_options_t
-
-FUNCTION: cairo_font_options_t*
-cairo_font_options_create ( ) ;
-
-FUNCTION: cairo_font_options_t*
-cairo_font_options_copy ( cairo_font_options_t* original ) ;
-
-FUNCTION: void
-cairo_font_options_destroy ( cairo_font_options_t* options ) ;
-
-FUNCTION: cairo_status_t
-cairo_font_options_status ( cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_font_options_merge ( cairo_font_options_t* options, cairo_font_options_t* other ) ;
-
-FUNCTION: cairo_bool_t
-cairo_font_options_equal ( cairo_font_options_t* options, cairo_font_options_t* other ) ;
-
-FUNCTION: ulong
-cairo_font_options_hash ( cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_font_options_set_antialias ( cairo_font_options_t* options, cairo_antialias_t antialias ) ;
-
-FUNCTION: cairo_antialias_t
-cairo_font_options_get_antialias ( cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_font_options_set_subpixel_order ( cairo_font_options_t* options, cairo_subpixel_order_t subpixel_order ) ;
-
-FUNCTION: cairo_subpixel_order_t
-cairo_font_options_get_subpixel_order ( cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_font_options_set_hint_style ( cairo_font_options_t* options, cairo_hint_style_t hint_style ) ;
-
-FUNCTION: cairo_hint_style_t
-cairo_font_options_get_hint_style ( cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_font_options_set_hint_metrics ( cairo_font_options_t* options, cairo_hint_metrics_t hint_metrics ) ;
-
-FUNCTION: cairo_hint_metrics_t
-cairo_font_options_get_hint_metrics ( cairo_font_options_t* options ) ;
-
-! This interface is for dealing with text as text, not caring about the
-! font object inside the the cairo_t.
-
-FUNCTION: void
-cairo_select_font_face ( cairo_t* cr, char* family, cairo_font_slant_t slant, cairo_font_weight_t weight ) ;
-
-FUNCTION: void
-cairo_set_font_size ( cairo_t* cr, double size ) ;
-
-FUNCTION: void
-cairo_set_font_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
-
-FUNCTION: void
-cairo_get_font_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
-
-FUNCTION: void
-cairo_set_font_options ( cairo_t* cr, cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_get_font_options ( cairo_t* cr, cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_set_font_face ( cairo_t* cr, cairo_font_face_t* font_face ) ;
-
-FUNCTION: cairo_font_face_t*
-cairo_get_font_face ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_set_scaled_font ( cairo_t* cr, cairo_scaled_font_t* scaled_font ) ;
-
-FUNCTION: cairo_scaled_font_t*
-cairo_get_scaled_font ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_show_text ( cairo_t* cr, char* utf8 ) ;
-
-FUNCTION: void
-cairo_show_glyphs ( cairo_t* cr, cairo_glyph_t* glyphs, int num_glyphs ) ;
-
-FUNCTION: void
-cairo_text_path ( cairo_t* cr, char* utf8 ) ;
-
-FUNCTION: void
-cairo_glyph_path ( cairo_t* cr, cairo_glyph_t* glyphs, int num_glyphs ) ;
-
-FUNCTION: void
-cairo_text_extents ( cairo_t* cr, char* utf8, cairo_text_extents_t* extents ) ;
-
-FUNCTION: void
-cairo_glyph_extents ( cairo_t* cr, cairo_glyph_t* glyphs, int num_glyphs, cairo_text_extents_t* extents ) ;
-
-FUNCTION: void
-cairo_font_extents ( cairo_t* cr, cairo_font_extents_t* extents ) ;
-
-! Generic identifier for a font style
-
-FUNCTION: cairo_font_face_t*
-cairo_font_face_reference ( cairo_font_face_t* font_face ) ;
-
-FUNCTION: void
-cairo_font_face_destroy ( cairo_font_face_t* font_face ) ;
-
-FUNCTION: uint
-cairo_font_face_get_reference_count ( cairo_font_face_t* font_face ) ;
-
-FUNCTION: cairo_status_t
-cairo_font_face_status ( cairo_font_face_t* font_face ) ;
-
-TYPEDEF: int cairo_font_type_t
-C-ENUM:
- CAIRO_FONT_TYPE_TOY
- CAIRO_FONT_TYPE_FT
- CAIRO_FONT_TYPE_WIN32
- CAIRO_FONT_TYPE_QUARTZ ;
-
-FUNCTION: cairo_font_type_t
-cairo_font_face_get_type ( cairo_font_face_t* font_face ) ;
-
-FUNCTION: void*
-cairo_font_face_get_user_data ( cairo_font_face_t* font_face, cairo_user_data_key_t* key ) ;
-
-FUNCTION: cairo_status_t
-cairo_font_face_set_user_data ( cairo_font_face_t* font_face, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
-
-! Portable interface to general font features.
-
-FUNCTION: cairo_scaled_font_t*
-cairo_scaled_font_create ( cairo_font_face_t* font_face, cairo_matrix_t* font_matrix, cairo_matrix_t* ctm, cairo_font_options_t* options ) ;
-
-FUNCTION: cairo_scaled_font_t*
-cairo_scaled_font_reference ( cairo_scaled_font_t* scaled_font ) ;
-
-FUNCTION: void
-cairo_scaled_font_destroy ( cairo_scaled_font_t* scaled_font ) ;
-
-FUNCTION: uint
-cairo_scaled_font_get_reference_count ( cairo_scaled_font_t* scaled_font ) ;
-
-FUNCTION: cairo_status_t
-cairo_scaled_font_status ( cairo_scaled_font_t* scaled_font ) ;
-
-FUNCTION: cairo_font_type_t
-cairo_scaled_font_get_type ( cairo_scaled_font_t* scaled_font ) ;
-
-FUNCTION: void*
-cairo_scaled_font_get_user_data ( cairo_scaled_font_t* scaled_font, cairo_user_data_key_t* key ) ;
-
-FUNCTION: cairo_status_t
-cairo_scaled_font_set_user_data ( cairo_scaled_font_t* scaled_font, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
-
-FUNCTION: void
-cairo_scaled_font_extents ( cairo_scaled_font_t* scaled_font, cairo_font_extents_t* extents ) ;
-
-FUNCTION: void
-cairo_scaled_font_text_extents ( cairo_scaled_font_t* scaled_font, char* utf8, cairo_text_extents_t* extents ) ;
-
-FUNCTION: void
-cairo_scaled_font_glyph_extents ( cairo_scaled_font_t* scaled_font, cairo_glyph_t* glyphs, int num_glyphs, cairo_text_extents_t* extents ) ;
-
-FUNCTION: cairo_font_face_t*
-cairo_scaled_font_get_font_face ( cairo_scaled_font_t* scaled_font ) ;
-
-FUNCTION: void
-cairo_scaled_font_get_font_matrix ( cairo_scaled_font_t* scaled_font, cairo_matrix_t* font_matrix ) ;
-
-FUNCTION: void
-cairo_scaled_font_get_ctm ( cairo_scaled_font_t* scaled_font, cairo_matrix_t* ctm ) ;
-
-FUNCTION: void
-cairo_scaled_font_get_font_options ( cairo_scaled_font_t* scaled_font, cairo_font_options_t* options ) ;
-
-! Query functions
-
-FUNCTION: cairo_operator_t
-cairo_get_operator ( cairo_t* cr ) ;
-
-FUNCTION: cairo_pattern_t*
-cairo_get_source ( cairo_t* cr ) ;
-
-FUNCTION: double
-cairo_get_tolerance ( cairo_t* cr ) ;
-
-FUNCTION: cairo_antialias_t
-cairo_get_antialias ( cairo_t* cr ) ;
-
-FUNCTION: cairo_bool_t
-cairo_has_current_point ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_get_current_point ( cairo_t* cr, double* x, double* y ) ;
-
-FUNCTION: cairo_fill_rule_t
-cairo_get_fill_rule ( cairo_t* cr ) ;
-
-FUNCTION: double
-cairo_get_line_width ( cairo_t* cr ) ;
-
-FUNCTION: cairo_line_cap_t
-cairo_get_line_cap ( cairo_t* cr ) ;
-
-FUNCTION: cairo_line_join_t
-cairo_get_line_join ( cairo_t* cr ) ;
-
-FUNCTION: double
-cairo_get_miter_limit ( cairo_t* cr ) ;
-
-FUNCTION: int
-cairo_get_dash_count ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_get_dash ( cairo_t* cr, double* dashes, double* offset ) ;
-
-FUNCTION: void
-cairo_get_matrix ( cairo_t* cr, cairo_matrix_t* matrix ) ;
-
-FUNCTION: cairo_surface_t*
-cairo_get_target ( cairo_t* cr ) ;
-
-FUNCTION: cairo_surface_t*
-cairo_get_group_target ( cairo_t* cr ) ;
-
-TYPEDEF: int cairo_path_data_type_t
-C-ENUM:
- CAIRO_PATH_MOVE_TO
- CAIRO_PATH_LINE_TO
- CAIRO_PATH_CURVE_TO
- CAIRO_PATH_CLOSE_PATH ;
-
-! NEED TO DO UNION HERE
-C-STRUCT: cairo_path_data_t-point
- { "double" "x" }
- { "double" "y" } ;
-
-C-STRUCT: cairo_path_data_t-header
- { "cairo_path_data_type_t" "type" }
- { "int" "length" } ;
-
-C-UNION: cairo_path_data_t "cairo_path_data_t-point" "cairo_path_data_t-header" ;
-
-C-STRUCT: cairo_path_t
- { "cairo_status_t" "status" }
- { "cairo_path_data_t*" "data" }
- { "int" "num_data" } ;
-
-FUNCTION: cairo_path_t*
-cairo_copy_path ( cairo_t* cr ) ;
-
-FUNCTION: cairo_path_t*
-cairo_copy_path_flat ( cairo_t* cr ) ;
-
-FUNCTION: void
-cairo_append_path ( cairo_t* cr, cairo_path_t* path ) ;
-
-FUNCTION: void
-cairo_path_destroy ( cairo_path_t* path ) ;
-
-! Error status queries
-
-FUNCTION: cairo_status_t
-cairo_status ( cairo_t* cr ) ;
-
-FUNCTION: char*
-cairo_status_to_string ( cairo_status_t status ) ;
-
-! Surface manipulation
-
-FUNCTION: cairo_surface_t*
-cairo_surface_create_similar ( cairo_surface_t* other, cairo_content_t content, int width, int height ) ;
-
-FUNCTION: cairo_surface_t*
-cairo_surface_reference ( cairo_surface_t* surface ) ;
-
-FUNCTION: void
-cairo_surface_finish ( cairo_surface_t* surface ) ;
-
-FUNCTION: void
-cairo_surface_destroy ( cairo_surface_t* surface ) ;
-
-FUNCTION: uint
-cairo_surface_get_reference_count ( cairo_surface_t* surface ) ;
-
-FUNCTION: cairo_status_t
-cairo_surface_status ( cairo_surface_t* surface ) ;
-
-TYPEDEF: int cairo_surface_type_t
-C-ENUM:
- CAIRO_SURFACE_TYPE_IMAGE
- CAIRO_SURFACE_TYPE_PDF
- CAIRO_SURFACE_TYPE_PS
- CAIRO_SURFACE_TYPE_XLIB
- CAIRO_SURFACE_TYPE_XCB
- CAIRO_SURFACE_TYPE_GLITZ
- CAIRO_SURFACE_TYPE_QUARTZ
- CAIRO_SURFACE_TYPE_WIN32
- CAIRO_SURFACE_TYPE_BEOS
- CAIRO_SURFACE_TYPE_DIRECTFB
- CAIRO_SURFACE_TYPE_SVG
- CAIRO_SURFACE_TYPE_OS2
- CAIRO_SURFACE_TYPE_WIN32_PRINTING
- CAIRO_SURFACE_TYPE_QUARTZ_IMAGE ;
-
-FUNCTION: cairo_surface_type_t
-cairo_surface_get_type ( cairo_surface_t* surface ) ;
-
-FUNCTION: cairo_content_t
-cairo_surface_get_content ( cairo_surface_t* surface ) ;
-
-FUNCTION: cairo_status_t
-cairo_surface_write_to_png ( cairo_surface_t* surface, char* filename ) ;
-
-FUNCTION: cairo_status_t
-cairo_surface_write_to_png_stream ( cairo_surface_t* surface, cairo_write_func_t write_func, void* closure ) ;
-
-FUNCTION: void*
-cairo_surface_get_user_data ( cairo_surface_t* surface, cairo_user_data_key_t* key ) ;
-
-FUNCTION: cairo_status_t
-cairo_surface_set_user_data ( cairo_surface_t* surface, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
-
-FUNCTION: void
-cairo_surface_get_font_options ( cairo_surface_t* surface, cairo_font_options_t* options ) ;
-
-FUNCTION: void
-cairo_surface_flush ( cairo_surface_t* surface ) ;
-
-FUNCTION: void
-cairo_surface_mark_dirty ( cairo_surface_t* surface ) ;
-
-FUNCTION: void
-cairo_surface_mark_dirty_rectangle ( cairo_surface_t* surface, int x, int y, int width, int height ) ;
-
-FUNCTION: void
-cairo_surface_set_device_offset ( cairo_surface_t* surface, double x_offset, double y_offset ) ;
-
-FUNCTION: void
-cairo_surface_get_device_offset ( cairo_surface_t* surface, double* x_offset, double* y_offset ) ;
-
-FUNCTION: void
-cairo_surface_set_fallback_resolution ( cairo_surface_t* surface, double x_pixels_per_inch, double y_pixels_per_inch ) ;
-
-FUNCTION: void
-cairo_surface_copy_page ( cairo_surface_t* surface ) ;
-
-FUNCTION: void
-cairo_surface_show_page ( cairo_surface_t* surface ) ;
-
-! Image-surface functions
-
-TYPEDEF: int cairo_format_t
-C-ENUM:
- CAIRO_FORMAT_ARGB32
- CAIRO_FORMAT_RGB24
- CAIRO_FORMAT_A8
- CAIRO_FORMAT_A1
- CAIRO_FORMAT_RGB16_565 ;
-
-FUNCTION: cairo_surface_t*
-cairo_image_surface_create ( cairo_format_t format, int width, int height ) ;
-
-FUNCTION: int
-cairo_format_stride_for_width ( cairo_format_t format, int width ) ;
-
-FUNCTION: cairo_surface_t*
-cairo_image_surface_create_for_data ( uchar* data, cairo_format_t format, int width, int height, int stride ) ;
-
-FUNCTION: uchar*
-cairo_image_surface_get_data ( cairo_surface_t* surface ) ;
-
-FUNCTION: cairo_format_t
-cairo_image_surface_get_format ( cairo_surface_t* surface ) ;
-
-FUNCTION: int
-cairo_image_surface_get_width ( cairo_surface_t* surface ) ;
-
-FUNCTION: int
-cairo_image_surface_get_height ( cairo_surface_t* surface ) ;
-
-FUNCTION: int
-cairo_image_surface_get_stride ( cairo_surface_t* surface ) ;
-
-FUNCTION: cairo_surface_t*
-cairo_image_surface_create_from_png ( char* filename ) ;
-
-FUNCTION: cairo_surface_t*
-cairo_image_surface_create_from_png_stream ( cairo_read_func_t read_func, void* closure ) ;
-
-! Pattern creation functions
-
-FUNCTION: cairo_pattern_t*
-cairo_pattern_create_rgb ( double red, double green, double blue ) ;
-
-FUNCTION: cairo_pattern_t*
-cairo_pattern_create_rgba ( double red, double green, double blue, double alpha ) ;
-
-FUNCTION: cairo_pattern_t*
-cairo_pattern_create_for_surface ( cairo_surface_t* surface ) ;
-
-FUNCTION: cairo_pattern_t*
-cairo_pattern_create_linear ( double x0, double y0, double x1, double y1 ) ;
-
-FUNCTION: cairo_pattern_t*
-cairo_pattern_create_radial ( double cx0, double cy0, double radius0, double cx1, double cy1, double radius1 ) ;
-
-FUNCTION: cairo_pattern_t*
-cairo_pattern_reference ( cairo_pattern_t* pattern ) ;
-
-FUNCTION: void
-cairo_pattern_destroy ( cairo_pattern_t* pattern ) ;
-
-FUNCTION: uint
-cairo_pattern_get_reference_count ( cairo_pattern_t* pattern ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_status ( cairo_pattern_t* pattern ) ;
-
-FUNCTION: void*
-cairo_pattern_get_user_data ( cairo_pattern_t* pattern, cairo_user_data_key_t* key ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_set_user_data ( cairo_pattern_t* pattern, cairo_user_data_key_t* key, void* user_data, cairo_destroy_func_t destroy ) ;
-
-TYPEDEF: int cairo_pattern_type_t
-C-ENUM:
- CAIRO_PATTERN_TYPE_SOLID
- CAIRO_PATTERN_TYPE_SURFACE
- CAIRO_PATTERN_TYPE_LINEAR
- CAIRO_PATTERN_TYPE_RADIA ;
-
-FUNCTION: cairo_pattern_type_t
-cairo_pattern_get_type ( cairo_pattern_t* pattern ) ;
-
-FUNCTION: void
-cairo_pattern_add_color_stop_rgb ( cairo_pattern_t* pattern, double offset, double red, double green, double blue ) ;
-
-FUNCTION: void
-cairo_pattern_add_color_stop_rgba ( cairo_pattern_t* pattern, double offset, double red, double green, double blue, double alpha ) ;
-
-FUNCTION: void
-cairo_pattern_set_matrix ( cairo_pattern_t* pattern, cairo_matrix_t* matrix ) ;
-
-FUNCTION: void
-cairo_pattern_get_matrix ( cairo_pattern_t* pattern, cairo_matrix_t* matrix ) ;
-
-TYPEDEF: int cairo_extend_t
-C-ENUM:
- CAIRO_EXTEND_NONE
- CAIRO_EXTEND_REPEAT
- CAIRO_EXTEND_REFLECT
- CAIRO_EXTEND_PAD ;
-
-FUNCTION: void
-cairo_pattern_set_extend ( cairo_pattern_t* pattern, cairo_extend_t extend ) ;
-
-FUNCTION: cairo_extend_t
-cairo_pattern_get_extend ( cairo_pattern_t* pattern ) ;
-
-TYPEDEF: int cairo_filter_t
-C-ENUM:
- CAIRO_FILTER_FAST
- CAIRO_FILTER_GOOD
- CAIRO_FILTER_BEST
- CAIRO_FILTER_NEAREST
- CAIRO_FILTER_BILINEAR
- CAIRO_FILTER_GAUSSIAN ;
-
-FUNCTION: void
-cairo_pattern_set_filter ( cairo_pattern_t* pattern, cairo_filter_t filter ) ;
-
-FUNCTION: cairo_filter_t
-cairo_pattern_get_filter ( cairo_pattern_t* pattern ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_get_rgba ( cairo_pattern_t* pattern, double* red, double* green, double* blue, double* alpha ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_get_surface ( cairo_pattern_t* pattern, cairo_surface_t* *surface ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_get_color_stop_rgba ( cairo_pattern_t* pattern, int index, double* offset, double* red, double* green, double* blue, double* alpha ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_get_color_stop_count ( cairo_pattern_t* pattern, int* count ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_get_linear_points ( cairo_pattern_t* pattern, double* x0, double* y0, double* x1, double* y1 ) ;
-
-FUNCTION: cairo_status_t
-cairo_pattern_get_radial_circles ( cairo_pattern_t* pattern, double* x0, double* y0, double* r0, double* x1, double* y1, double* r1 ) ;
-
-! Matrix functions
-
-FUNCTION: void
-cairo_matrix_init ( cairo_matrix_t* matrix, double xx, double yx, double xy, double yy, double x0, double y0 ) ;
-
-FUNCTION: void
-cairo_matrix_init_identity ( cairo_matrix_t* matrix ) ;
-
-FUNCTION: void
-cairo_matrix_init_translate ( cairo_matrix_t* matrix, double tx, double ty ) ;
-
-FUNCTION: void
-cairo_matrix_init_scale ( cairo_matrix_t* matrix, double sx, double sy ) ;
-
-FUNCTION: void
-cairo_matrix_init_rotate ( cairo_matrix_t* matrix, double radians ) ;
-
-FUNCTION: void
-cairo_matrix_translate ( cairo_matrix_t* matrix, double tx, double ty ) ;
-
-FUNCTION: void
-cairo_matrix_scale ( cairo_matrix_t* matrix, double sx, double sy ) ;
-
-FUNCTION: void
-cairo_matrix_rotate ( cairo_matrix_t* matrix, double radians ) ;
-
-FUNCTION: cairo_status_t
-cairo_matrix_invert ( cairo_matrix_t* matrix ) ;
-
-FUNCTION: void
-cairo_matrix_multiply ( cairo_matrix_t* result, cairo_matrix_t* a, cairo_matrix_t* b ) ;
-
-FUNCTION: void
-cairo_matrix_transform_distance ( cairo_matrix_t* matrix, double* dx, double* dy ) ;
-
-FUNCTION: void
-cairo_matrix_transform_point ( cairo_matrix_t* matrix, double* x, double* y ) ;
-
-! Functions to be used while debugging (not intended for use in production code)
-FUNCTION: void
-cairo_debug_reset_static_data ( ) ;
+++ /dev/null
-! Copyright (C) 2008 Matthew Willis.
-! See http://factorcode.org/license.txt for BSD license.
-USING: sequences math opengl.gadgets kernel
-byte-arrays cairo.ffi cairo io.backend
-ui.gadgets accessors opengl.gl
-arrays fry classes ;
-
-IN: cairo.gadgets
-
-: width>stride ( width -- stride ) 4 * ;
-
-: copy-cairo ( dim quot -- byte-array )
- >r first2 over width>stride
- [ * nip <byte-array> dup CAIRO_FORMAT_ARGB32 ]
- [ cairo_image_surface_create_for_data ] 3bi
- r> with-cairo-from-surface ; inline
-
-TUPLE: cairo-gadget < texture-gadget ;
-
-: <cairo-gadget> ( dim -- gadget )
- cairo-gadget new-gadget
- swap >>dim ;
-
-M: cairo-gadget cache-key* [ dim>> ] [ class ] bi 2array ;
-
-: render-cairo ( dim quot -- bytes format )
- >r 2^-bounds r> copy-cairo GL_BGRA ; inline
-
-GENERIC: render-cairo* ( gadget -- )
-
-M: cairo-gadget render*
- [ dim>> dup ] [ '[ _ render-cairo* ] ] bi
- render-cairo render-bytes* ;
-
-! maybe also texture>png
-! : cairo>png ( gadget path -- )
-! >r [ cairo>bytes CAIRO_FORMAT_ARGB32 ] [ width>> ]
-! [ height>> ] tri over width>stride
-! cairo_image_surface_create_for_data
-! r> [ cairo_surface_write_to_png check-cairo ] curry with-surface ;
-
-: copy-surface ( surface -- )
- cr swap 0 0 cairo_set_source_surface
- cr cairo_paint ;
-
-TUPLE: png-gadget < texture-gadget path ;
-: <png> ( path -- gadget )
- png-gadget new-gadget
- swap >>path ;
-
-M: png-gadget render*
- path>> normalize-path cairo_image_surface_create_from_png
- [ cairo_image_surface_get_width ]
- [ cairo_image_surface_get_height 2array dup 2^-bounds ]
- [ [ copy-surface ] curry copy-cairo ] tri
- GL_BGRA render-bytes* ;
-
-M: png-gadget cache-key* path>> ;
+++ /dev/null
-! Copyright (C) 2008 Matthew Willis
-! See http://factorcode.org/license.txt for BSD license.
-!
-! these samples are a subset of the samples on
-! http://cairographics.org/samples/
-USING: cairo cairo.ffi locals math.constants math
-io.backend kernel alien.c-types libc namespaces
-cairo.gadgets ui.gadgets accessors ;
-
-IN: cairo.samples
-
-TUPLE: arc-gadget < cairo-gadget ;
-M:: arc-gadget render-cairo* ( gadget -- )
- [let | xc [ 128.0 ]
- yc [ 128.0 ]
- radius [ 100.0 ]
- angle1 [ pi 1/4 * ]
- angle2 [ pi ] |
- cr 10.0 cairo_set_line_width
- cr xc yc radius angle1 angle2 cairo_arc
- cr cairo_stroke
-
- ! draw helping lines
- cr 1 0.2 0.2 0.6 cairo_set_source_rgba
- cr 6.0 cairo_set_line_width
-
- cr xc yc 10.0 0 2 pi * cairo_arc
- cr cairo_fill
-
- cr xc yc radius angle1 angle1 cairo_arc
- cr xc yc cairo_line_to
- cr xc yc radius angle2 angle2 cairo_arc
- cr xc yc cairo_line_to
- cr cairo_stroke
- ] ;
-
-TUPLE: clip-gadget < cairo-gadget ;
-M: clip-gadget render-cairo* ( gadget -- )
- drop
- cr 128 128 76.8 0 2 pi * cairo_arc
- cr cairo_clip
- cr cairo_new_path
-
- cr 0 0 256 256 cairo_rectangle
- cr cairo_fill
- cr 0 1 0 cairo_set_source_rgb
- cr 0 0 cairo_move_to
- cr 256 256 cairo_line_to
- cr 256 0 cairo_move_to
- cr 0 256 cairo_line_to
- cr 10 cairo_set_line_width
- cr cairo_stroke ;
-
-TUPLE: clip-image-gadget < cairo-gadget ;
-M:: clip-image-gadget render-cairo* ( gadget -- )
- [let* | png [ "resource:misc/icons/Factor_128x128.png"
- normalize-path cairo_image_surface_create_from_png ]
- w [ png cairo_image_surface_get_width ]
- h [ png cairo_image_surface_get_height ] |
- cr 128 128 76.8 0 2 pi * cairo_arc
- cr cairo_clip
- cr cairo_new_path
-
- cr 192.0 w / 192.0 h / cairo_scale
- cr png 32 32 cairo_set_source_surface
- cr cairo_paint
- png cairo_surface_destroy
- ] ;
-
-TUPLE: dash-gadget < cairo-gadget ;
-M:: dash-gadget render-cairo* ( gadget -- )
- [let | dashes [ { 50 10 10 10 } >c-double-array ]
- ndash [ 4 ] |
- cr dashes ndash -50 cairo_set_dash
- cr 10 cairo_set_line_width
- cr 128.0 25.6 cairo_move_to
- cr 230.4 230.4 cairo_line_to
- cr -102.4 0 cairo_rel_line_to
- cr 51.2 230.4 51.2 128.0 128.0 128.0 cairo_curve_to
- cr cairo_stroke
- ] ;
-
-TUPLE: gradient-gadget < cairo-gadget ;
-M:: gradient-gadget render-cairo* ( gadget -- )
- [let | pat [ 0 0 0 256 cairo_pattern_create_linear ]
- radial [ 115.2 102.4 25.6 102.4 102.4 128.0
- cairo_pattern_create_radial ] |
- pat 1 0 0 0 1 cairo_pattern_add_color_stop_rgba
- pat 0 1 1 1 1 cairo_pattern_add_color_stop_rgba
- cr 0 0 256 256 cairo_rectangle
- cr pat cairo_set_source
- cr cairo_fill
- pat cairo_pattern_destroy
-
- radial 0 1 1 1 1 cairo_pattern_add_color_stop_rgba
- radial 1 0 0 0 1 cairo_pattern_add_color_stop_rgba
- cr radial cairo_set_source
- cr 128.0 128.0 76.8 0 2 pi * cairo_arc
- cr cairo_fill
- radial cairo_pattern_destroy
- ] ;
-
-TUPLE: text-gadget < cairo-gadget ;
-M: text-gadget render-cairo* ( gadget -- )
- drop
- cr "Serif" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_BOLD
- cairo_select_font_face
- cr 50 cairo_set_font_size
- cr 10 135 cairo_move_to
- cr "Hello" cairo_show_text
-
- cr 70 165 cairo_move_to
- cr "factor" cairo_text_path
- cr 0.5 0.5 1 cairo_set_source_rgb
- cr cairo_fill_preserve
- cr 0 0 0 cairo_set_source_rgb
- cr 2.56 cairo_set_line_width
- cr cairo_stroke
-
- ! draw helping lines
- cr 1 0.2 0.2 0.6 cairo_set_source_rgba
- cr 10 135 5.12 0 2 pi * cairo_arc
- cr cairo_close_path
- cr 70 165 5.12 0 2 pi * cairo_arc
- cr cairo_fill ;
-
-TUPLE: utf8-gadget < cairo-gadget ;
-M: utf8-gadget render-cairo* ( gadget -- )
- drop
- cr "Sans" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_NORMAL
- cairo_select_font_face
- cr 50 cairo_set_font_size
- "cairo_text_extents_t" malloc-object
- cr "日本語" pick cairo_text_extents
- cr over
- [ cairo_text_extents_t-width 2 / ]
- [ cairo_text_extents_t-x_bearing ] bi +
- 128 swap - pick
- [ cairo_text_extents_t-height 2 / ]
- [ cairo_text_extents_t-y_bearing ] bi +
- 128 swap - cairo_move_to
- free
- cr "日本語" cairo_show_text
-
- cr 1 0.2 0.2 0.6 cairo_set_source_rgba
- cr 6 cairo_set_line_width
- cr 128 0 cairo_move_to
- cr 0 256 cairo_rel_line_to
- cr 0 128 cairo_move_to
- cr 256 0 cairo_rel_line_to
- cr cairo_stroke ;
-
- USING: quotations cairo.gadgets ui.gadgets.panes sequences ;
- : samples ( -- )
- {
- arc-gadget clip-gadget clip-image-gadget dash-gadget
- gradient-gadget text-gadget utf8-gadget
- }
- [ new-gadget { 256 256 } >>dim gadget. ] each ;
-
- MAIN: samples
+++ /dev/null
-Cairo graphics library binding
projects / factor.git / commitdiff