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7e668edf20
2008-12-15 Alexander Larsson <alexl@redhat.com>
* Makefile.am:
* acconfig.h:
* configure.in:
* eel/
* libnautilus-private/Makefile.am:
Import eel into nautilus.
svn path=/trunk/; revision=14815
156 lines
7.3 KiB
C
156 lines
7.3 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
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/* eel-gdk-pixbuf-extensions.h: Routines to augment what's in gdk-pixbuf.
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Copyright (C) 2000 Eazel, Inc.
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The Gnome Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the Gnome Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Authors: Darin Adler <darin@eazel.com>
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Ramiro Estrugo <ramiro@eazel.com>
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*/
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#ifndef EEL_GDK_PIXBUF_EXTENSIONS_H
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#define EEL_GDK_PIXBUF_EXTENSIONS_H
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#include <eel/eel-art-extensions.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gdk/gdk.h>
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#include <gio/gio.h>
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#define EEL_STANDARD_ALPHA_THRESHHOLD 128
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#define EEL_OPACITY_FULLY_TRANSPARENT 0
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#define EEL_OPACITY_FULLY_OPAQUE 255
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extern const EelIRect eel_gdk_pixbuf_whole_pixbuf;
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typedef struct EelPixbufLoadHandle EelPixbufLoadHandle;
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typedef void (* EelPixbufLoadCallback) (GError *error,
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GdkPixbuf *pixbuf,
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gpointer callback_data);
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/* Convenience functions for lists of GdkPixbuf objects. */
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void eel_gdk_pixbuf_list_ref (GList *pixbuf_list);
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void eel_gdk_pixbuf_list_unref (GList *pixbuf_list);
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void eel_gdk_pixbuf_list_free (GList *pixbuf_list);
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/* Loading a GdkPixbuf with a URI. */
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GdkPixbuf * eel_gdk_pixbuf_load (const char *uri);
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GdkPixbuf * eel_gdk_pixbuf_load_from_stream (GInputStream *stream);
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GdkPixbuf * eel_gdk_pixbuf_load_from_stream_at_size (GInputStream *stream,
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int size);
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/* Same thing async. */
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EelPixbufLoadHandle *eel_gdk_pixbuf_load_async (const char *uri,
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int priority,
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EelPixbufLoadCallback callback,
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gpointer callback_data);
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void eel_cancel_gdk_pixbuf_load (EelPixbufLoadHandle *handle);
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GdkPixbuf * eel_gdk_pixbuf_scale_down_to_fit (GdkPixbuf *pixbuf,
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int max_width,
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int max_height);
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GdkPixbuf * eel_gdk_pixbuf_scale_to_fit (GdkPixbuf *pixbuf,
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int max_width,
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int max_height);
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double eel_gdk_scale_to_fit_factor (int width,
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int height,
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int max_width,
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int max_height,
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int *scaled_width,
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int *scaled_height);
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GdkPixbuf * eel_gdk_pixbuf_scale_to_min (GdkPixbuf *pixbuf,
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int min_width,
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int min_height);
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double eel_gdk_scale_to_min_factor (int width,
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int height,
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int min_width,
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int min_height,
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int *scaled_width,
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int *scaled_height);
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/* return average color values for each component (argb) */
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guint32 eel_gdk_pixbuf_average_value (GdkPixbuf *pixbuf);
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void eel_gdk_pixbuf_fill_rectangle_with_color (GdkPixbuf *pixbuf,
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EelIRect area,
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guint32 color);
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/* Save a pixbuf to a png file. Return value indicates succss/TRUE or failure/FALSE */
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gboolean eel_gdk_pixbuf_save_to_file (const GdkPixbuf *pixbuf,
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const char *file_name);
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void eel_gdk_pixbuf_ref_if_not_null (GdkPixbuf *pixbuf_or_null);
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void eel_gdk_pixbuf_unref_if_not_null (GdkPixbuf *pixbuf_or_null);
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/* Copy a pixbuf to an area of a GdkDrawable */
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void eel_gdk_pixbuf_draw_to_drawable (const GdkPixbuf *pixbuf,
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GdkDrawable *drawable,
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GdkGC *gc,
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int source_x,
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int source_y,
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EelIRect destination_area,
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GdkRgbDither dither,
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GdkPixbufAlphaMode alpha_compositing_mode,
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int alpha_threshold);
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/* Copy a pixbuf to an area of another pixbuf */
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void eel_gdk_pixbuf_draw_to_pixbuf (const GdkPixbuf *pixbuf,
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GdkPixbuf *destination_pixbuf,
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int source_x,
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int source_y,
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EelIRect destination_area);
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/* Composite one pixbuf over another with the given opacity */
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void eel_gdk_pixbuf_draw_to_pixbuf_alpha (const GdkPixbuf *pixbuf,
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GdkPixbuf *destination_pixbuf,
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int source_x,
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int source_y,
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EelIRect destination_area,
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int opacity,
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GdkInterpType interpolation_mode);
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/* Create a pixbuf from a sub area of another pixbuf */
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GdkPixbuf * eel_gdk_pixbuf_new_from_pixbuf_sub_area (GdkPixbuf *pixbuf,
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EelIRect area);
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/* Create a pixbuf from an existing buffer. */
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GdkPixbuf * eel_gdk_pixbuf_new_from_existing_buffer (guchar *buffer,
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int buffer_rowstride,
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gboolean buffer_has_alpha,
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EelIRect area);
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/* Determine whether a pixbuf is valid or not */
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gboolean eel_gdk_pixbuf_is_valid (const GdkPixbuf *pixbuf);
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/* Access the dimensions of a pixbuf. */
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EelDimensions eel_gdk_pixbuf_get_dimensions (const GdkPixbuf *pixbuf);
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/* Return the intersection of the pixbuf with the given rectangle. */
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EelIRect eel_gdk_pixbuf_intersect (const GdkPixbuf *pixbuf,
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int pixbuf_x,
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int pixbuf_y,
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EelIRect rectangle);
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/* Scales large pixbufs down fast */
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GdkPixbuf * eel_gdk_pixbuf_scale_down (GdkPixbuf *pixbuf,
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int dest_width,
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int dest_height);
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#endif /* EEL_GDK_PIXBUF_EXTENSIONS_H */
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