/* GdkPixbuf library - Main header file * * Copyright (C) 1999 The Free Software Foundation * * Authors: Mark Crichton * Miguel de Icaza * Federico Mena-Quintero * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library 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. */ #ifndef GDK_PIXBUF_H #define GDK_PIXBUF_H #include #include #include #include #ifdef __cplusplus extern "C" { #endif #include /* GdkPixbuf structures */ typedef struct _GdkPixbuf GdkPixbuf; typedef struct _GdkPixbufFrame GdkPixbufFrame; typedef struct _GdkPixbufAnimation GdkPixbufAnimation; struct _GdkPixbuf { /* Reference count */ int ref_count; /* Libart pixbuf */ ArtPixBuf *art_pixbuf; }; /* GIF-like animation overlay modes for frames */ typedef enum { GDK_PIXBUF_FRAME_RETAIN, GDK_PIXBUF_FRAME_DISPOSE, GDK_PIXBUF_FRAME_REVERT } GdkPixbufFrameAction; struct _GdkPixbufFrame { /* The pixbuf with this frame's image data */ GdkPixbuf *pixbuf; /* Offsets for overlaying onto the animation's area */ int x_offset; int y_offset; /* Frame duration in ms */ int delay_time; /* Overlay mode */ GdkPixbufFrameAction action; }; struct _GdkPixbufAnimation { /* Reference count */ int ref_count; /* Number of frames */ int n_frames; /* List of GdkPixbufFrame structures */ GList *frames; }; /* Convenience functions */ ArtPixFormat gdk_pixbuf_get_format (GdkPixbuf *pixbuf); int gdk_pixbuf_get_n_channels (GdkPixbuf *pixbuf); int gdk_pixbuf_get_has_alpha (GdkPixbuf *pixbuf); int gdk_pixbuf_get_bits_per_sample (GdkPixbuf *pixbuf); guchar *gdk_pixbuf_get_pixels (GdkPixbuf *pixbuf); int gdk_pixbuf_get_width (GdkPixbuf *pixbuf); int gdk_pixbuf_get_height (GdkPixbuf *pixbuf); int gdk_pixbuf_get_rowstride (GdkPixbuf *pixbuf); /* Reference counting */ void gdk_pixbuf_ref (GdkPixbuf *pixbuf); void gdk_pixbuf_unref (GdkPixbuf *pixbuf); /* Wrap a libart pixbuf */ GdkPixbuf *gdk_pixbuf_new_from_art_pixbuf (ArtPixBuf *art_pixbuf); /* Create a blank pixbuf with an optimal rowstride and a new buffer */ GdkPixbuf *gdk_pixbuf_new (ArtPixFormat format, gboolean has_alpha, int bits_per_sample, int width, int height); /* Simple loading */ GdkPixbuf *gdk_pixbuf_new_from_file (const char *filename); GdkPixbuf *gdk_pixbuf_new_from_data (guchar *data, ArtPixFormat format, gboolean has_alpha, int width, int height, int rowstride, ArtDestroyNotify dfunc, gpointer dfunc_data); GdkPixbuf *gdk_pixbuf_new_from_xpm_data (const char **data); /* Adding an alpha channel */ GdkPixbuf *gdk_pixbuf_add_alpha (GdkPixbuf *pixbuf, gboolean substitute_color, guchar r, guchar g, guchar b); /* Rendering to a drawable */ /* Alpha compositing mode */ typedef enum { GDK_PIXBUF_ALPHA_BILEVEL, GDK_PIXBUF_ALPHA_FULL } GdkPixbufAlphaMode; void gdk_pixbuf_render_threshold_alpha (GdkPixbuf *pixbuf, GdkBitmap *bitmap, int src_x, int src_y, int dest_x, int dest_y, int width, int height, int alpha_threshold); void gdk_pixbuf_render_to_drawable (GdkPixbuf *pixbuf, GdkDrawable *drawable, GdkGC *gc, int src_x, int src_y, int dest_x, int dest_y, int width, int height, GdkRgbDither dither, int x_dither, int y_dither); void gdk_pixbuf_render_to_drawable_alpha (GdkPixbuf *pixbuf, GdkDrawable *drawable, int src_x, int src_y, int dest_x, int dest_y, int width, int height, GdkPixbufAlphaMode alpha_mode, int alpha_threshold, GdkRgbDither dither, int x_dither, int y_dither); void gdk_pixbuf_render_pixmap_and_mask (GdkPixbuf *pixbuf, GdkPixmap **pixmap_return, GdkBitmap **mask_return, int alpha_threshold); /* Fetching a region from a drawable */ GdkPixbuf *gdk_pixbuf_get_from_drawable (GdkPixbuf *dest, GdkDrawable *src, GdkColormap *cmap, int src_x, int src_y, int dest_x, int dest_y, int width, int height); /* Copy an area of a pixbuf onto another one */ void gdk_pixbuf_copy_area (GdkPixbuf *src_pixbuf, int src_x, int src_y, int width, int height, GdkPixbuf *dest_pixbuf, int dest_x, int dest_y); /* Scaling */ void gdk_pixbuf_scale (GdkPixbuf *src, GdkPixbuf *dest, int dest_x, int dest_y, int dest_width, int dest_height, double offset_x, double offset_y, double scale_x, double scale_y, ArtFilterLevel filter_level); void gdk_pixbuf_composite (GdkPixbuf *src, GdkPixbuf *dest, int dest_x, int dest_y, int dest_width, int dest_height, double offset_x, double offset_y, double scale_x, double scale_y, ArtFilterLevel filter_level, int overall_alpha); void gdk_pixbuf_composite_color (GdkPixbuf *src, GdkPixbuf *dest, int dest_x, int dest_y, int dest_width, int dest_height, double offset_x, double offset_y, double scale_x, double scale_y, ArtFilterLevel filter_level, int overall_alpha, int check_x, int check_y, int check_size, art_u32 color1, art_u32 color2); GdkPixbuf *gdk_pixbuf_scale_simple (GdkPixbuf *src, int dest_width, int dest_height, ArtFilterLevel filter_level); GdkPixbuf *gdk_pixbuf_composite_color_simple (GdkPixbuf *src, int dest_width, int dest_height, ArtFilterLevel filter_level, int overall_alpha, int check_size, art_u32 color1, art_u32 color2); /* Animation support */ GdkPixbufAnimation *gdk_pixbuf_animation_new_from_file (const char *filename); void gdk_pixbuf_animation_ref (GdkPixbufAnimation *animation); void gdk_pixbuf_animation_unref (GdkPixbufAnimation *animation); /* General (presently empty) initialization hooks, primarily for gnome-libs */ void gdk_pixbuf_preinit(gpointer app, gpointer modinfo); void gdk_pixbuf_postinit(gpointer app, gpointer modinfo); #ifdef __cplusplus } #endif #endif