------------------------------------------------------------------------------
-- GtkAda - Ada95 binding for Gtk+/Gnome --
-- --
-- Copyright (C) 2010-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
-- <description>
-- Reading and writing PNG images.
-- </description>
--
-- <c_version>1.8.8</c_version>
-- <group>Cairo</group>
package Cairo.Png is
function Write_To_Png
(Surface : Cairo_Surface;
Filename : String)
return Cairo_Status;
-- Surface: a Cairo_Surface with pixel contents
-- Filename: the name of a file to write to
--
-- Writes the contents of surface to a new file filename as a PNG
-- image.
--
-- Return value: Cairo_Status_Success if the PNG file was written
-- successfully. Otherwise, Cairo_Status_No_Memory if memory could not
-- be allocated for the operation or
-- Cairo_Status_Surface_Type_Mismatch if the surface does not have
-- pixel contents, or Cairo_Status_Write_Error if an I/O error occurs
-- while attempting to write the file.
function Create_From_Png
(Filename : String)
return Cairo_Surface;
-- Filename: name of PNG file to load
--
-- Creates a new image surface and initializes the contents to the
-- given PNG file.
--
-- Return value: a new Cairo_Surface initialized with the contents
-- of the PNG file, or a "nil" surface if any error occurred. A nil
-- surface can be checked for with Cairo.Surface.Status (Surface) which
-- may return one of the following values:
--
-- Cairo_Status_No_Memory
-- Cairo_Status_File_Not_Found
-- Cairo_Status_Read_Error
--
-- Alternatively, you can allow errors to propagate through the drawing
-- operations and check the status on the context upon completion
-- using Cairo_Status.
end Cairo.Png;