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{ GdkPixbuf library - Main header file
Copyright (C) 1999 The Free Software Foundation
Authors: Mark Crichton <crichton@gimp.org>
Miguel de Icaza <miguel@gnu.org>
Federico Mena-Quintero <federico@gimp.org>
Havoc Pennington <hp@redhat.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, 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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
}
unit gdk2pixbuf; // keep unit name lowercase for kylix
{$IFDEF FPC}
{$mode objfpc}
{$ENDIF}
{$IFDEF VER140}
{$DEFINE KYLIX}
{$ENDIF}
interface
uses glib2;
const
{$ifdef windows}
{$define gdkpixbufwin}
gdkpixbuflib = 'libgdk_pixbuf-2.0-0.dll';
{$IFDEF FPC}
{$ifndef NO_SMART_LINK}
{$smartlink on}
{$endif}
{$ENDIF}
{$else}
{$ifdef darwin}
gdkpixbuflib = 'gdk_pixbuf-2.0.0';
{$linklib gtk-x11-2.0}
{$linklib gdk-x11-2.0}
{$linklib pango-1.0.0}
{$linklib glib-2.0.0}
{$linklib gobject-2.0.0}
{$linklib gdk_pixbuf-2.0.0}
{$linklib atk-1.0.0}
{$else}
{$ifdef UseCustomLibs}
gdkpixbuflib = '';
{$else}
gdkpixbuflib = 'libgdk_pixbuf-2.0.so';
{$endif}
{$endif}
{$endif}
{$define HasGTK2_4}
{$define HasGTK2_6}
{ Pointers to basic pascal types, inserted by h2pas conversion program.}
{$IFNDEF KYLIX}
{$PACKRECORDS C}
{$ELSE}
{$ALIGN 4}
{$WEAKPACKAGEUNIT}
{$WARNINGS OFF}
{$ENDIF}
{$IFNDEF Kylix}
var
{$IFDEF WINDOWS }
gdk_pixbuf_major_version: guint; external gdkpixbuflib name 'gdk_pixbuf_major_version';
gdk_pixbuf_minor_version: guint; external gdkpixbuflib name 'gdk_pixbuf_minor_version';
gdk_pixbuf_micro_version: guint; external gdkpixbuflib name 'gdk_pixbuf_micro_version';
gdk_pixbuf_version: PChar ; external gdkpixbuflib name 'gdk_pixbuf_version';
{$ELSE }
gdk_pixbuf_major_version: guint;cvar;external;
gdk_pixbuf_minor_version: guint;cvar;external;
gdk_pixbuf_micro_version: guint;cvar;external;
gdk_pixbuf_version: PChar;cvar;external;
{$ENDIF }
{$ENDIF}
type
// internal type
PGdkPixbuf = pointer;
// internal type
PGdkPixbufAnimation = pointer;
// internal type
PGdkPixbufAnimationIter = pointer;
{ Alpha compositing mode }
PGdkPixbufAlphaMode = ^TGdkPixbufAlphaMode;
TGdkPixbufAlphaMode = (
GDK_PIXBUF_ALPHA_BILEVEL,
GDK_PIXBUF_ALPHA_FULL
);
{ Color spaces; right now only RGB is supported.
Note that these values are encoded in inline pixbufs
as ints, so don't reorder them
}
PGdkColorspace = ^TGdkColorspace;
TGdkColorspace = (GDK_COLORSPACE_RGB);
{ Handler that must free the pixel array }
TGdkPixbufDestroyNotify = procedure (pixels:Pguchar; data:gpointer); cdecl;
{ image data hosed }
{ no mem to load image }
{ bad option passed to save routine }
{ unsupported image type (sort of an ENOSYS) }
{ unsupported operation (load, save) for image type }
PGdkPixbufError = ^TGdkPixbufError;
TGdkPixbufError = (
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
GDK_PIXBUF_ERROR_BAD_OPTION,
GDK_PIXBUF_ERROR_UNKNOWN_TYPE,
GDK_PIXBUF_ERROR_UNSUPPORTED_OPERATION,
GDK_PIXBUF_ERROR_FAILED
);
{ Interpolation modes }
PGdkInterpType = ^TGdkInterpType;
TGdkInterpType = (
GDK_INTERP_NEAREST,
GDK_INTERP_TILES,
GDK_INTERP_BILINEAR,
GDK_INTERP_HYPER
);
TGdkPixbufRotation = (
GDK_PIXBUF_ROTATE_NONE = 0,
GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE = 90,
GDK_PIXBUF_ROTATE_UPSIDEDOWN = 180,
GDK_PIXBUF_ROTATE_CLOCKWISE = 270
);
function GDK_TYPE_PIXBUF : GType;
function GDK_PIXBUF(anObject : pointer) : PGdkPixbuf;
function GDK_IS_PIXBUF(anObject : pointer) : boolean;
function GDK_TYPE_PIXBUF_ANIMATION : GType;
function GDK_PIXBUF_ANIMATION(anObject : pointer) : PGdkPixbufAnimation;
function GDK_IS_PIXBUF_ANIMATION(anObject : pointer) : boolean;
function GDK_TYPE_PIXBUF_ANIMATION_ITER : GType;
function GDK_PIXBUF_ANIMATION_ITER(anObject : pointer) : PGdkPixbufAnimationIter;
function GDK_IS_PIXBUF_ANIMATION_ITER(anObject : pointer) : boolean;
function GDK_PIXBUF_ERROR : TGQuark;
function gdk_pixbuf_error_quark:TGQuark; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_type:GType; cdecl; external gdkpixbuflib;
{ Reference counting }
{$ifndef GDK_PIXBUF_DISABLE_DEPRECATED}
function gdk_pixbuf_ref(pixbuf:PGdkPixbuf):PGdkPixbuf; cdecl; external gdkpixbuflib;
procedure gdk_pixbuf_unref(pixbuf:PGdkPixbuf); cdecl; external gdkpixbuflib;
{$endif}
{ GdkPixbuf accessors }
function gdk_pixbuf_get_colorspace(pixbuf:PGdkPixbuf):TGdkColorspace; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_n_channels(pixbuf:PGdkPixbuf):longint; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_has_alpha(pixbuf:PGdkPixbuf):gboolean; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_bits_per_sample(pixbuf:PGdkPixbuf):longint; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_pixels(pixbuf:PGdkPixbuf):Pguchar; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_width(pixbuf:PGdkPixbuf):longint; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_height(pixbuf:PGdkPixbuf):longint; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_rowstride(pixbuf:PGdkPixbuf):longint; cdecl; external gdkpixbuflib;
{ Create a blank pixbuf with an optimal rowstride and a new buffer }
function gdk_pixbuf_new(colorspace:TGdkColorspace; has_alpha:gboolean; bits_per_sample:longint; width:longint; height:longint):PGdkPixbuf; cdecl; external gdkpixbuflib;
{ Copy a pixbuf }
function gdk_pixbuf_copy(pixbuf:PGdkPixbuf):PGdkPixbuf; cdecl; external gdkpixbuflib;
{ Create a pixbuf which points to the pixels of another pixbuf }
function gdk_pixbuf_new_subpixbuf(src_pixbuf:PGdkPixbuf; src_x:longint; src_y:longint; width:longint; height:longint):PGdkPixbuf; cdecl; external gdkpixbuflib;
{ Simple loading }
function gdk_pixbuf_new_from_file(filename:Pchar; error:PPGError):PGdkPixbuf; cdecl; external gdkpixbuflib;
function gdk_pixbuf_new_from_data(data:Pguchar; colorspace:TGdkColorspace; has_alpha:gboolean; bits_per_sample:longint; width:longint;
height:longint; rowstride:longint; destroy_fn:TGdkPixbufDestroyNotify; destroy_fn_data:gpointer):PGdkPixbuf; cdecl; external gdkpixbuflib;
function gdk_pixbuf_new_from_xpm_data(data:PPchar):PGdkPixbuf; cdecl; external gdkpixbuflib;
function gdk_pixbuf_new_from_inline(data_length:gint; var data:guint8; copy_pixels:gboolean; error:PPGError):PGdkPixbuf; cdecl; external gdkpixbuflib;
{$IFDEF HasGTK2_4}
function gdk_pixbuf_new_from_file_at_size(filename:Pchar; width, height: gint;error:PPGError):PGdkPixbuf; cdecl; external gdkpixbuflib;
{$ENDIF HasGTK2_4}
{$IFDEF HasGTK2_6}
function gdk_pixbuf_new_from_file_at_scale(filename:Pchar; width, height: gint; preserve_aspect_ratio: gboolean; error:PPGError):PGdkPixbuf; cdecl; external gdkpixbuflib;
{$ENDIF HasGTK2_6}
{ Mutations }
procedure gdk_pixbuf_fill(pixbuf:PGdkPixbuf; pixel:guint32); cdecl; external gdkpixbuflib;
{ Saving }
{$IFNDEF KYLIX}
function gdk_pixbuf_save(pixbuf:PGdkPixbuf; filename:Pchar; _type:Pchar; error:PPGError; args:array of const):gboolean; cdecl; overload; external gdkpixbuflib;
function gdk_pixbuf_save(pixbuf:PGdkPixbuf; filename:Pchar; _type:Pchar; error:PPGError):gboolean; cdecl; overload; external gdkpixbuflib;
{$ELSE}
function gdk_pixbuf_save(pixbuf:PGdkPixbuf; filename:Pchar; _type:Pchar; error:PPGError):gboolean; varargs; cdecl; external gdkpixbuflib;
{$ENDIF}
function gdk_pixbuf_savev(pixbuf:PGdkPixbuf; filename:Pchar; _type:Pchar; option_keys:PPchar; option_values:PPchar;
error:PPGError):gboolean; cdecl; external gdkpixbuflib;
{ Adding an alpha channel }
function gdk_pixbuf_add_alpha(pixbuf:PGdkPixbuf; substitute_color:gboolean; r:guchar; g:guchar; b:guchar):PGdkPixbuf; cdecl; external gdkpixbuflib;
{ Copy an area of a pixbuf onto another one }
procedure gdk_pixbuf_copy_area(src_pixbuf:PGdkPixbuf; src_x:longint; src_y:longint; width:longint; height:longint;
dest_pixbuf:PGdkPixbuf; dest_x:longint; dest_y:longint); cdecl; external gdkpixbuflib;
{ Brighten/darken and optionally make it pixelated-looking }
procedure gdk_pixbuf_saturate_and_pixelate(src:PGdkPixbuf; dest:PGdkPixbuf; saturation:gfloat; pixelate:gboolean); cdecl; external gdkpixbuflib;
{ Rendering to a drawable }
{ Scaling }
procedure gdk_pixbuf_scale(src:PGdkPixbuf; dest:PGdkPixbuf; dest_x:longint; dest_y:longint; dest_width:longint;
dest_height:longint; offset_x:double; offset_y:double; scale_x:double; scale_y:double;
interp_type:TGdkInterpType); cdecl; external gdkpixbuflib;
procedure gdk_pixbuf_composite(src:PGdkPixbuf; dest:PGdkPixbuf; dest_x:longint; dest_y:longint; dest_width:longint;
dest_height:longint; offset_x:double; offset_y:double; scale_x:double; scale_y:double;
interp_type:TGdkInterpType; overall_alpha:longint); cdecl; external gdkpixbuflib;
procedure gdk_pixbuf_composite_color(src:PGdkPixbuf; dest:PGdkPixbuf; dest_x:longint; dest_y:longint; dest_width:longint;
dest_height:longint; offset_x:double; offset_y:double; scale_x:double; scale_y:double;
interp_type:TGdkInterpType; overall_alpha:longint; check_x:longint; check_y:longint; check_size:longint;
color1:guint32; color2:guint32); cdecl; external gdkpixbuflib;
function gdk_pixbuf_scale_simple(src:PGdkPixbuf; dest_width:longint; dest_height:longint; interp_type:TGdkInterpType):PGdkPixbuf; cdecl; external gdkpixbuflib;
function gdk_pixbuf_composite_color_simple(src:PGdkPixbuf; dest_width:longint; dest_height:longint; interp_type:TGdkInterpType; overall_alpha:longint;
check_size:longint; color1:guint32; color2:guint32):PGdkPixbuf; cdecl; external gdkpixbuflib;
{$IFDEF HasGTK2_6}
function gdk_pixbuf_rotate_simple(src: PGdkPixbuf; angle: TGdkPixbufRotation): PGdkPixbuf; cdecl; external gdkpixbuflib;
function gdk_pixbuf_flip(src: PGdkPixbuf; horizontal: gboolean): PGdkPixbuf; cdecl; external gdkpixbuflib;
{$ENDIF}
{ Animation support }
function gdk_pixbuf_animation_get_type:GType; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_new_from_file(filename:Pchar; error:PPGError):PGdkPixbufAnimation; cdecl; external gdkpixbuflib;
{$ifndef GDK_PIXBUF_DISABLE_DEPRECATED}
function gdk_pixbuf_animation_ref(animation:PGdkPixbufAnimation):PGdkPixbufAnimation; cdecl; external gdkpixbuflib;
procedure gdk_pixbuf_animation_unref(animation:PGdkPixbufAnimation); cdecl; external gdkpixbuflib;
{$endif}
function gdk_pixbuf_animation_get_width(animation:PGdkPixbufAnimation):longint; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_get_height(animation:PGdkPixbufAnimation):longint; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_is_static_image(animation:PGdkPixbufAnimation):gboolean; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_get_static_image(animation:PGdkPixbufAnimation):PGdkPixbuf; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_get_iter(animation:PGdkPixbufAnimation; var start_time:TGTimeVal):PGdkPixbufAnimationIter; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_iter_get_type:GType; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_iter_get_delay_time(iter:PGdkPixbufAnimationIter):longint; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_iter_get_pixbuf(iter:PGdkPixbufAnimationIter):PGdkPixbuf; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_iter_on_currently_loading_frame(iter:PGdkPixbufAnimationIter):gboolean; cdecl; external gdkpixbuflib;
function gdk_pixbuf_animation_iter_advance(iter:PGdkPixbufAnimationIter; var current_time:TGTimeVal):gboolean; cdecl; external gdkpixbuflib;
function gdk_pixbuf_get_option(pixbuf:PGdkPixbuf; key:Pgchar):Pgchar; cdecl; external gdkpixbuflib;
{$DEFINE read_interface}
{$include gdk-pixbuf-loader.inc}
{ $include gdk-pixbuf-enum-types.inc}
{$UNDEF read_interface}
implementation
{$DEFINE read_implementation}
{$include gdk-pixbuf-loader.inc}
{ $include gdk-pixbuf-enum-types.inc}
{$UNDEF read_implementation}
{$IFNDEF KYLIX}
{ There is a bug in the compiler. If an external variable is not used, it will
create code, that can be relocated by the linker.
So, use them in this hidden procedure.
}
procedure CheckUnusedVariable; [Public];
begin
if (gdk_pixbuf_major_version=0)
and (gdk_pixbuf_minor_version=0)
and (gdk_pixbuf_micro_version=0)
and (gdk_pixbuf_version=nil) then ;
end;
{$ENDIF}
function GDK_TYPE_PIXBUF : GType;
begin
GDK_TYPE_PIXBUF:=gdk_pixbuf_get_type;
end;
function GDK_PIXBUF(anObject : pointer) : PGdkPixbuf;
begin
GDK_PIXBUF:=PGdkPixbuf(G_TYPE_CHECK_INSTANCE_CAST(anObject,GDK_TYPE_PIXBUF));
end;
function GDK_IS_PIXBUF(anObject : pointer) : boolean;
begin
GDK_IS_PIXBUF:=G_TYPE_CHECK_INSTANCE_TYPE(anObject,GDK_TYPE_PIXBUF);
end;
function GDK_TYPE_PIXBUF_ANIMATION : GType;
begin
GDK_TYPE_PIXBUF_ANIMATION:=gdk_pixbuf_animation_get_type;
end;
function GDK_PIXBUF_ANIMATION(anObject : pointer) : PGdkPixbufAnimation;
begin
GDK_PIXBUF_ANIMATION:=PGdkPixbufAnimation(G_TYPE_CHECK_INSTANCE_CAST(anObject,
GDK_TYPE_PIXBUF_ANIMATION));
end;
function GDK_IS_PIXBUF_ANIMATION(anObject : pointer) : boolean;
begin
GDK_IS_PIXBUF_ANIMATION:=G_TYPE_CHECK_INSTANCE_TYPE(anObject,
GDK_TYPE_PIXBUF_ANIMATION);
end;
function GDK_TYPE_PIXBUF_ANIMATION_ITER : GType;
begin
GDK_TYPE_PIXBUF_ANIMATION_ITER:=gdk_pixbuf_animation_iter_get_type;
end;
function GDK_PIXBUF_ANIMATION_ITER(anObject : pointer) : PGdkPixbufAnimationIter;
begin
GDK_PIXBUF_ANIMATION_ITER:=PGdkPixbufAnimationIter(G_TYPE_CHECK_INSTANCE_CAST(
anObject,GDK_TYPE_PIXBUF_ANIMATION_ITER));
end;
function GDK_IS_PIXBUF_ANIMATION_ITER(anObject : pointer) : boolean;
begin
GDK_IS_PIXBUF_ANIMATION_ITER:=G_TYPE_CHECK_INSTANCE_TYPE(anObject,
GDK_TYPE_PIXBUF_ANIMATION_ITER);
end;
function GDK_PIXBUF_ERROR : TGQuark;
begin
GDK_PIXBUF_ERROR:=gdk_pixbuf_error_quark;
end;
end.
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