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60b6a010e9
2001-04-18 Havoc Pennington <hp@redhat.com> * gtk/gtkimage.c: fix to properly queue resizes when the image is set * gtk/gtktextview.c (gtk_text_view_do_popup): desensitize Paste if the insertion point isn't editable * demos/gtk-demo/images.c: Added a GtkImage demo * demos/gtk-demo/drawingarea.c: drawing area demo * demos/gtk-demo/menus.c (create_menu): cleanups 2001-04-18 Havoc Pennington <hp@redhat.com> * gdk-pixbuf.c (gdk_pixbuf_fill): Function to fill pixbuf with a given color.
299 lines
10 KiB
C
299 lines
10 KiB
C
/* GdkPixbuf library - Main header file
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*
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* Copyright (C) 1999 The Free Software Foundation
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*
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* Authors: Mark Crichton <crichton@gimp.org>
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* Miguel de Icaza <miguel@gnu.org>
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* Federico Mena-Quintero <federico@gimp.org>
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* Havoc Pennington <hp@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef GDK_PIXBUF_H
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#define GDK_PIXBUF_H
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#include <glib.h>
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#include <gdk-pixbuf/gdk-pixbuf-features.h>
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#include <glib-object.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Alpha compositing mode */
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typedef enum
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{
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GDK_PIXBUF_ALPHA_BILEVEL,
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GDK_PIXBUF_ALPHA_FULL
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} GdkPixbufAlphaMode;
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/* Color spaces; right now only RGB is supported.
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* Note that these values are encoded in inline pixbufs
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* as ints, so don't reorder them
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*/
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typedef enum {
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GDK_COLORSPACE_RGB
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} GdkColorspace;
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/* All of these are opaque structures */
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typedef struct _GdkPixbuf GdkPixbuf;
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typedef struct _GdkPixbufAnimation GdkPixbufAnimation;
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typedef struct _GdkPixbufFrame GdkPixbufFrame;
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#define GDK_TYPE_PIXBUF (gdk_pixbuf_get_type ())
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#define GDK_PIXBUF(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF, GdkPixbuf))
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#define GDK_IS_PIXBUF(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF))
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#define GDK_TYPE_PIXBUF_ANIMATION (gdk_pixbuf_animation_get_type ())
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#define GDK_PIXBUF_ANIMATION(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_ANIMATION, GdkPixbufAnimation))
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#define GDK_IS_PIXBUF_ANIMATION(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_ANIMATION))
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/* Handler that must free the pixel array */
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typedef void (* GdkPixbufDestroyNotify) (guchar *pixels, gpointer data);
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#define GDK_PIXBUF_ERROR gdk_pixbuf_error_quark ()
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typedef enum {
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/* image data hosed */
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GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
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/* no mem to load image */
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GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
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/* bad option value passed to save routine */
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GDK_PIXBUF_ERROR_BAD_OPTION_VALUE,
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/* unsupported image type (sort of an ENOSYS) */
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GDK_PIXBUF_ERROR_UNKNOWN_TYPE,
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/* unsupported operation (load, save) for image type */
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GDK_PIXBUF_ERROR_UNSUPPORTED_OPERATION,
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GDK_PIXBUF_ERROR_FAILED
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} GdkPixbufError;
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GQuark gdk_pixbuf_error_quark () G_GNUC_CONST;
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GType gdk_pixbuf_get_type (void) G_GNUC_CONST;
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/* Reference counting */
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GdkPixbuf *gdk_pixbuf_ref (GdkPixbuf *pixbuf);
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void gdk_pixbuf_unref (GdkPixbuf *pixbuf);
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/* GdkPixbuf accessors */
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GdkColorspace gdk_pixbuf_get_colorspace (const GdkPixbuf *pixbuf);
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int gdk_pixbuf_get_n_channels (const GdkPixbuf *pixbuf);
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gboolean gdk_pixbuf_get_has_alpha (const GdkPixbuf *pixbuf);
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int gdk_pixbuf_get_bits_per_sample (const GdkPixbuf *pixbuf);
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guchar *gdk_pixbuf_get_pixels (const GdkPixbuf *pixbuf);
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int gdk_pixbuf_get_width (const GdkPixbuf *pixbuf);
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int gdk_pixbuf_get_height (const GdkPixbuf *pixbuf);
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int gdk_pixbuf_get_rowstride (const GdkPixbuf *pixbuf);
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/* Create a blank pixbuf with an optimal rowstride and a new buffer */
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GdkPixbuf *gdk_pixbuf_new (GdkColorspace colorspace, gboolean has_alpha, int bits_per_sample,
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int width, int height);
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/* Copy a pixbuf */
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GdkPixbuf *gdk_pixbuf_copy (const GdkPixbuf *pixbuf);
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/* Create a pixbuf which points to the pixels of another pixbuf */
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GdkPixbuf *gdk_pixbuf_new_subpixbuf (GdkPixbuf *src_pixbuf,
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int src_x,
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int src_y,
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int width,
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int height);
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/* Simple loading */
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GdkPixbuf *gdk_pixbuf_new_from_file (const char *filename,
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GError **error);
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GdkPixbuf *gdk_pixbuf_new_from_data (const guchar *data,
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GdkColorspace colorspace,
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gboolean has_alpha,
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int bits_per_sample,
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int width, int height,
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int rowstride,
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GdkPixbufDestroyNotify destroy_fn,
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gpointer destroy_fn_data);
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GdkPixbuf *gdk_pixbuf_new_from_xpm_data (const char **data);
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/* Read an inline pixbuf */
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GdkPixbuf *gdk_pixbuf_new_from_inline (const guchar *inline_pixbuf,
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gboolean copy_pixels,
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int length,
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GError **error);
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/* Mutations */
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void gdk_pixbuf_fill (GdkPixbuf *pixbuf,
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guint32 pixel);
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/* Saving */
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gboolean gdk_pixbuf_save (GdkPixbuf *pixbuf,
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const char *filename,
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const char *type,
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GError **error,
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...);
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gboolean gdk_pixbuf_savev (GdkPixbuf *pixbuf,
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const char *filename,
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const char *type,
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char **option_keys,
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char **option_values,
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GError **error);
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/* Adding an alpha channel */
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GdkPixbuf *gdk_pixbuf_add_alpha (const GdkPixbuf *pixbuf, gboolean substitute_color,
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guchar r, guchar g, guchar b);
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/* Copy an area of a pixbuf onto another one */
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void gdk_pixbuf_copy_area (const GdkPixbuf *src_pixbuf,
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int src_x, int src_y,
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int width, int height,
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GdkPixbuf *dest_pixbuf,
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int dest_x, int dest_y);
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/* Brighten/darken and optionally make it pixelated-looking */
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void gdk_pixbuf_saturate_and_pixelate (const GdkPixbuf *src,
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GdkPixbuf *dest,
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gfloat saturation,
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gboolean pixelate);
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/* Rendering to a drawable */
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/* Scaling */
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/* Interpolation modes */
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typedef enum {
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GDK_INTERP_NEAREST,
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GDK_INTERP_TILES,
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GDK_INTERP_BILINEAR,
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GDK_INTERP_HYPER
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} GdkInterpType;
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void gdk_pixbuf_scale (const GdkPixbuf *src,
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GdkPixbuf *dest,
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int dest_x,
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int dest_y,
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int dest_width,
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int dest_height,
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double offset_x,
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double offset_y,
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double scale_x,
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double scale_y,
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GdkInterpType interp_type);
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void gdk_pixbuf_composite (const GdkPixbuf *src,
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GdkPixbuf *dest,
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int dest_x,
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int dest_y,
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int dest_width,
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int dest_height,
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double offset_x,
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double offset_y,
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double scale_x,
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double scale_y,
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GdkInterpType interp_type,
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int overall_alpha);
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void gdk_pixbuf_composite_color (const GdkPixbuf *src,
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GdkPixbuf *dest,
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int dest_x,
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int dest_y,
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int dest_width,
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int dest_height,
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double offset_x,
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double offset_y,
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double scale_x,
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double scale_y,
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GdkInterpType interp_type,
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int overall_alpha,
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int check_x,
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int check_y,
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int check_size,
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guint32 color1,
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guint32 color2);
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GdkPixbuf *gdk_pixbuf_scale_simple (const GdkPixbuf *src,
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int dest_width,
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int dest_height,
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GdkInterpType interp_type);
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GdkPixbuf *gdk_pixbuf_composite_color_simple (const GdkPixbuf *src,
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int dest_width,
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int dest_height,
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GdkInterpType interp_type,
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int overall_alpha,
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int check_size,
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guint32 color1,
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guint32 color2);
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/* Animation support */
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/* GIF-like animation overlay modes for frames */
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typedef enum {
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GDK_PIXBUF_FRAME_RETAIN,
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GDK_PIXBUF_FRAME_DISPOSE,
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GDK_PIXBUF_FRAME_REVERT
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} GdkPixbufFrameAction;
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GType gdk_pixbuf_animation_get_type (void) G_GNUC_CONST;
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GdkPixbufAnimation *gdk_pixbuf_animation_new_from_file (const char *filename,
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GError **error);
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GdkPixbufAnimation *gdk_pixbuf_animation_ref (GdkPixbufAnimation *animation);
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void gdk_pixbuf_animation_unref (GdkPixbufAnimation *animation);
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int gdk_pixbuf_animation_get_width (GdkPixbufAnimation *animation);
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int gdk_pixbuf_animation_get_height (GdkPixbufAnimation *animation);
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GList *gdk_pixbuf_animation_get_frames (GdkPixbufAnimation *animation);
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int gdk_pixbuf_animation_get_num_frames (GdkPixbufAnimation *animation);
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/* Frame accessors */
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GdkPixbuf *gdk_pixbuf_frame_get_pixbuf (GdkPixbufFrame *frame);
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int gdk_pixbuf_frame_get_x_offset (GdkPixbufFrame *frame);
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int gdk_pixbuf_frame_get_y_offset (GdkPixbufFrame *frame);
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int gdk_pixbuf_frame_get_delay_time (GdkPixbufFrame *frame);
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GdkPixbufFrameAction gdk_pixbuf_frame_get_action (GdkPixbufFrame *frame);
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GdkPixbufFrame *gdk_pixbuf_frame_copy (GdkPixbufFrame *src);
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void gdk_pixbuf_frame_free (GdkPixbufFrame *frame);
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GType gdk_pixbuf_frame_get_type (void) G_GNUC_CONST;
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#define GDK_TYPE_PIXBUF_FRAME gdk_pixbuf_frame_get_type ()
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#include <gdk-pixbuf/gdk-pixbuf-loader.h>
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#ifdef __cplusplus
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}
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#endif
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#endif
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