4 * Copyright (C) 2008 The Geeqie Team
8 * This software is released under the GNU General Public License (GNU GPL).
9 * Please read the included file COPYING for more information.
10 * This software comes with no warranty of any kind, use at your own risk!
13 #ifndef PIXBUF_RENDERER_H
14 #define PIXBUF_RENDERER_H
16 #include <gtk/gtkeventbox.h>
17 #include <gtk/gtkwindow.h>
20 #define TYPE_PIXBUF_RENDERER (pixbuf_renderer_get_type())
21 #define PIXBUF_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), TYPE_PIXBUF_RENDERER, PixbufRenderer))
22 #define PIXBUF_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), TYPE_PIXBUF_RENDERER, PixbufRendererClass))
23 #define IS_PIXBUF_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), TYPE_PIXBUF_RENDERER))
24 #define IS_PIXBUF_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), TYPE_PIXBUF_RENDERER))
25 #define PIXBUF_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), TYPE_PIXBUF_RENDERER, PixbufRendererClass))
28 typedef struct _PixbufRenderer PixbufRenderer;
29 typedef struct _PixbufRendererClass PixbufRendererClass;
32 typedef gint (* PixbufRendererTileRequestFunc)(PixbufRenderer *pr, gint x, gint y,
33 gint width, gint height, GdkPixbuf *pixbuf, gpointer user_data);
34 typedef void (* PixbufRendererTileDisposeFunc)(PixbufRenderer *pr, gint x, gint y,
35 gint width, gint height, GdkPixbuf *pixbuf, gpointer user_data);
37 typedef void (* PixbufRendererPostProcessFunc)(PixbufRenderer *pr, GdkPixbuf **pixbuf, gint x, gint y,
38 gint width, gint height, gpointer user_data);
41 PR_SCROLL_RESET_TOPLEFT = 0,
42 PR_SCROLL_RESET_CENTER,
43 PR_SCROLL_RESET_NOCHANGE,
44 PR_SCROLL_RESET_COUNT,
45 } PixbufRendererScrollResetType;
47 struct _PixbufRenderer
51 gint image_width; /* image actual dimensions (pixels) */
56 gint window_width; /* allocated size of window (drawing area) */
59 gint x_offset; /* offset of image start (non-zero when image < window) */
62 gint vis_width; /* dimensions of visible part of image */
65 gint width; /* size of scaled image (result) */
68 gint x_scroll; /* scroll offset of image (into width, height to start drawing) */
71 gdouble subpixel_x_scroll; /* subpixel scroll alignment, used to prevent acumulation of rounding errors */
72 gdouble subpixel_y_scroll;
76 gdouble zoom; /* zoom we want (0 is auto) */
77 gdouble scale; /* zoom we got (should never be 0) */
79 GdkInterpType zoom_quality;
83 GdkRgbDither dither_quality;
85 PixbufRendererScrollResetType scroll_reset;
89 GtkWidget *parent_window; /* resize parent_window when image dimensions change */
92 gboolean window_limit;
93 gint window_limit_size;
95 gboolean autofit_limit;
96 gint autofit_limit_size;
99 gint tile_cache_max; /* max mb to use for offscreen buffer */
105 gint tile_cols; /* count of tile columns */
106 GList *tiles; /* list of buffer tiles */
107 gint tile_cache_size; /* allocated size of pixmaps/pixbufs */
108 GList *draw_queue; /* list of areas to redraw */
109 GList *draw_queue_2pass;/* list when 2 pass is enabled */
112 gint draw_idle_high; /* current idle_id has high priority */
119 gboolean source_tiles_enabled;
120 gint source_tiles_cache_size;
122 GList *source_tiles; /* list of active source tiles */
123 gint source_tile_width;
124 gint source_tile_height;
126 PixbufRendererTileRequestFunc func_tile_request;
127 PixbufRendererTileDisposeFunc func_tile_dispose;
129 gpointer func_tile_data;
131 PixbufRendererPostProcessFunc func_post_process;
132 gpointer post_process_user_data;
133 gint post_process_slow;
138 gboolean debug_updated; /* debug only */
141 gint scroller_overlay;
150 GdkPixmap *overlay_buffer;
152 GdkPixbuf *spare_tile;
157 struct _PixbufRendererClass
159 GtkEventBoxClass parent_class;
161 void (*zoom)(PixbufRenderer *pr, gdouble zoom);
162 void (*clicked)(PixbufRenderer *pr, GdkEventButton *event);
163 void (*scroll_notify)(PixbufRenderer *pr);
165 void (*render_complete)(PixbufRenderer *pr);
166 void (*drag)(PixbufRenderer *pr, GdkEventButton *event);
170 GType pixbuf_renderer_get_type (void);
172 PixbufRenderer *pixbuf_renderer_new(void);
174 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window);
175 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr);
177 /* display a pixbuf */
179 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom);
180 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr);
182 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation);
183 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr);
185 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gint slow);
187 /* display an on-request array of pixbuf tiles */
189 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
190 gint tile_width, gint tile_height, gint cache_size,
191 PixbufRendererTileRequestFunc func_request,
192 PixbufRendererTileDisposeFunc func_dispose,
195 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height);
196 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr);
198 /* move image data from source to pr, source is then set to NULL image */
200 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source);
202 /* update region of existing image */
204 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height);
208 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y);
209 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
210 gdouble x_align, gdouble y_align);
212 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y);
213 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y);
216 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment);
217 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y);
219 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom);
220 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr);
221 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr);
223 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max);
227 gint pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height);
228 gint pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height);
230 /* region of image in pixel coordinates */
231 gint pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect);
233 /* actual size of the PixbufRenderer window minus borders,
234 * x and y are the scroll offset and include zoom factor.
236 gint pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect);
238 /* background color */
239 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color);
244 OVL_RELATIVE = 1 << 0, /* x,y coordinates are relative, negative values start bottom right */
245 /* OVL_HIDE_ON_SCROLL = 1 << 1*/ /* hide temporarily when scrolling (not yet implemented) */
246 } OverlayRendererFlags;
248 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
249 OverlayRendererFlags flags);
250 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y);
251 gint pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y);
252 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id);