1. ----------------------------------------------------------------------- 
  2. --               GtkAda - Ada95 binding for Gtk+/Gnome               -- 
  3. --                                                                   -- 
  4. --                    Copyright (C) 2010, AdaCore                    -- 
  5. --                                                                   -- 
  6. -- This library is free software; you can redistribute it and/or     -- 
  7. -- modify it under the terms of the GNU General Public               -- 
  8. -- License as published by the Free Software Foundation; either      -- 
  9. -- version 2 of the License, or (at your option) any later version.  -- 
  10. --                                                                   -- 
  11. -- This library is distributed in the hope that it will be useful,   -- 
  12. -- but WITHOUT ANY WARRANTY; without even the implied warranty of    -- 
  13. -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU -- 
  14. -- General Public License for more details.                          -- 
  15. --                                                                   -- 
  16. -- You should have received a copy of the GNU General Public         -- 
  17. -- License along with this library; if not, write to the             -- 
  18. -- Free Software Foundation, Inc., 59 Temple Place - Suite 330,      -- 
  19. -- Boston, MA 02111-1307, USA.                                       -- 
  20. --                                                                   -- 
  21. -- -- -- -- -- -- -- -- -- -- -- --
  22. ----------------------------------------------------------------------- 
  23.  
  24. --  <description> 
  25. --  Interfacing between Gdk and Cairo. 
  26. --  </description> 
  27. -- 
  28. --  <c_version>2.16.6</c_version> 
  29. --  <group>Cairo</group> 
  30.  
  31. with Glib;         use Glib; 
  32. with Cairo;        use Cairo; 
  33. with Gdk.Color;    use Gdk.Color; 
  34. with Gdk.Pixbuf;   use Gdk.Pixbuf; 
  35.  
  36. package Gdk.Cairo is 
  37.  
  38.    function Create (Drawable : Gdk_Drawable) return Cairo_Context; 
  39.    --  Creates a Cairo context for drawing to Drawable. 
  40.    -- 
  41.    --  Note that due to double-buffering, Cairo contexts created 
  42.    --  in a GTK+ expose event handler cannot be cached and reused 
  43.    --  between different expose events. 
  44.    -- 
  45.    --  Returns a newly created Cairo context. The result should be freed with 
  46.    --  Cairo.Destroy. 
  47.  
  48.    procedure Set_Source_Pixmap 
  49.      (Cr       : Cairo_Context; 
  50.       Pixmap   : Gdk_Pixmap; 
  51.       Pixmap_X : Gdouble; 
  52.       Pixmap_Y : Gdouble); 
  53.    --  Cr: a Cairo_Context 
  54.    --  Pixmap: a Gdk_Pixmap 
  55.    --  Pixmap_X: X coordinate of location to place upper left corner of Pixmap 
  56.    --  Pixmap_Y: Y coordinate of location to place upper left corner of Pixmap 
  57.    -- 
  58.    --  Sets the given pixmap as the source pattern for the Cairo context. 
  59.    --  The pattern has an extend mode of CAIRO_EXTEND_NONE and is aligned 
  60.    --  so that the origin of Pixmap is Pixmap_X, Pixmap_Y 
  61.  
  62.    procedure Set_Source_Pixbuf 
  63.      (Cr       : Cairo_Context; 
  64.       Pixbuf   : Gdk_Pixbuf; 
  65.       Pixbuf_X : Gdouble; 
  66.       Pixbuf_Y : Gdouble); 
  67.    --  Cr: a Cairo_Context 
  68.    --  Pixbuf: a Gdk_Pixbuf 
  69.    --  Pixbuf_X: X coordinate of location to place upper left corner of Pixbuf 
  70.    --  Pixbuf_Y: Y coordinate of location to place upper left corner of Pixbuf 
  71.    -- 
  72.    --  Sets the given pixbuf as the source pattern for the Cairo context. 
  73.    --  The pattern has an extend mode of CAIRO_EXTEND_NONE and is aligned 
  74.    --  so that the origin of Pixbuf is Pixbuf_X, Pixbuf_Y 
  75.  
  76.    procedure Set_Source_Color 
  77.      (Cr       : Cairo_Context; 
  78.       Color    : Gdk_Color); 
  79.    --  Set the specified Color as the source of Cr. 
  80.  
  81. private 
  82.    pragma Import (C, Set_Source_Pixmap, "gdk_cairo_set_source_pixmap"); 
  83.    pragma Import (C, Set_Source_Color, "gdk_cairo_set_source_color"); 
  84. end Gdk.Cairo;