--- gnome-desktop-2.19.90/configure.in.gnome-bg 2007-08-13 20:04:02.000000000 -0400 +++ gnome-desktop-2.19.90/configure.in 2007-08-29 17:22:58.000000000 -0400 @@ -51,10 +51,10 @@ AC_SUBST(GNOME_DISTRIBUTOR) AC_SUBST(GNOME_DATE) -GNOME_COMMON_INIT -GNOME_DEBUG_CHECK -GNOME_COMPILE_WARNINGS([maximum]) -GNOME_MAINTAINER_MODE_DEFINES +#GNOME_COMMON_INIT +#GNOME_DEBUG_CHECK +#GNOME_COMPILE_WARNINGS([maximum]) +#GNOME_MAINTAINER_MODE_DEFINES # As a special favour for vuntz, support --disable-deprecations --- /dev/null 2007-08-15 18:04:26.337218222 -0400 +++ gnome-desktop-2.19.90/libgnome-desktop/gnome-bg.c 2007-08-31 15:05:05.000000000 -0400 @@ -0,0 +1,1838 @@ +/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- + +gnomebg.c: Object for the desktop background. + +Copyright (C) 2000 Eazel, Inc. +Copyright (C) 2007 Red Hat, Inc. + +This program 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 program 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 program; if not, write to the +Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. + +Derived from eel-background.c and eel-gdk-pixbuf-extensions.c by +Darin Adler and Ramiro Estrugo + +Author: Soren Sandmann + +*/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +typedef struct _SlideShow SlideShow; +typedef struct _Slide Slide; + +struct _Slide +{ + double duration; /* in seconds */ + gboolean fixed; + + char *file1; + char *file2; /* NULL if fixed is TRUE */ +}; + +/* This is the size of the GdkRGB dither matrix, in order to avoid + * bad dithering when tiling the gradient + */ +#define GRADIENT_PIXMAP_TILE_SIZE 128 + +typedef struct FileCacheEntry FileCacheEntry; +#define CACHE_SIZE 4 + +/* + * Implementation of the GnomeBG class + */ +struct _GnomeBG +{ + GObject parent_instance; + + char * uri; + GnomeBGPlacement placement; + GnomeBGColorType color_type; + GdkColor c1; + GdkColor c2; + + /* Cached information, only access through cache accessor functions */ + SlideShow * slideshow; + time_t uri_mtime; + GdkPixbuf * pixbuf_cache; + int timeout_id; + + GList * file_cache; +}; + +struct _GnomeBGClass +{ + GObjectClass parent_class; +}; + +enum { + CHANGED, + N_SIGNALS +}; + +static guint signals[N_SIGNALS] = { 0 }; + +G_DEFINE_TYPE (GnomeBG, gnome_bg, G_TYPE_OBJECT); + +static GdkPixmap *make_root_pixmap (GdkScreen *screen, + gint width, + gint height); + +/* Pixbuf utils */ +static guint32 pixbuf_average_value (GdkPixbuf *pixbuf); +static GdkPixbuf *pixbuf_scale_to_fit (GdkPixbuf *src, + int max_width, + int max_height); +static GdkPixbuf *pixbuf_scale_to_min (GdkPixbuf *src, + int min_width, + int min_height); +static void pixbuf_draw_gradient (GdkPixbuf *pixbuf, + gboolean horizontal, + GdkColor *c1, + GdkColor *c2); +static void pixbuf_tile (GdkPixbuf *src, + GdkPixbuf *dest); +static void pixbuf_blend (GdkPixbuf *src, + GdkPixbuf *dest, + int src_x, + int src_y, + int width, + int height, + int dest_x, + int dest_y, + double alpha); + +/* Thumbnail utilities */ +static GdkPixbuf *create_thumbnail_for_uri (GnomeThumbnailFactory *factory, + const char *uri); +static gboolean get_thumb_annotations (GdkPixbuf *thumb, + int *orig_width, + int *orig_height); + +/* Cache */ +static GdkPixbuf *get_pixbuf (GnomeBG *bg); +static void clear_cache (GnomeBG *bg); +static gboolean is_different (GnomeBG *bg, + const char *uri); +static time_t get_mtime (const char *uri); +static GdkPixbuf *create_img_thumbnail (GnomeBG *bg, + GnomeThumbnailFactory *factory, + GdkScreen *screen, + int dest_width, + int dest_height); +static SlideShow * get_as_slideshow (GnomeBG *bg, + const char *uri); +static Slide * get_current_slide (SlideShow *show, + double *alpha); + +static void +gnome_bg_init (GnomeBG *bg) +{ +} + +static void +gnome_bg_finalize (GObject *object) +{ + GnomeBG *bg = GNOME_BG (object); + + clear_cache (bg); + + G_OBJECT_CLASS (gnome_bg_parent_class)->finalize (object); +} + +static void +gnome_bg_class_init (GnomeBGClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + + object_class->finalize = gnome_bg_finalize; + + signals[CHANGED] = g_signal_new ("changed", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_LAST, + 0, + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); +} + +static void +emit_changed (GnomeBG *bg) +{ + g_signal_emit (G_OBJECT (bg), signals[CHANGED], 0); +} + +GnomeBG * +gnome_bg_new (void) +{ + return g_object_new (GNOME_TYPE_BG, NULL); +} + +static gboolean +colors_equal (const GdkColor *c1, const GdkColor *c2) +{ + return c1->red == c2->red && + c1->green == c2->green && + c1->blue == c2->blue; +} + +void +gnome_bg_set_color (GnomeBG *bg, + GnomeBGColorType type, + GdkColor *c1, + GdkColor *c2) +{ + g_return_if_fail (bg != NULL); + + if (bg->color_type != type || + !colors_equal (&bg->c1, c1) || + (c2 && !colors_equal (&bg->c2, c2))) { + + bg->color_type = type; + bg->c1 = *c1; + if (c2) { + bg->c2 = *c2; + } + + emit_changed (bg); + } +} + +void +gnome_bg_set_placement (GnomeBG *bg, + GnomeBGPlacement placement) +{ + g_return_if_fail (bg != NULL); + + if (bg->placement != placement) { + bg->placement = placement; + + emit_changed (bg); + } +} + +void +gnome_bg_set_uri (GnomeBG *bg, + const char *uri) +{ + g_return_if_fail (bg != NULL); + + if (is_different (bg, uri)) { + char *tmp = g_strdup (uri); + + /* FIXME: maybe check that it is local */ + + g_free (bg->uri); + + bg->uri = tmp; + + clear_cache (bg); + + emit_changed (bg); + } +} + +static void +draw_color (GnomeBG *bg, GdkPixbuf *dest) +{ + guint32 pixel; + + switch (bg->color_type) + { + case GNOME_BG_COLOR_SOLID: + pixel = ((bg->c1.red >> 8) << 24) | + ((bg->c1.green >> 8) << 16) | + ((bg->c1.blue >> 8) << 8) | + (0xff); + + gdk_pixbuf_fill (dest, pixel); + break; + + case GNOME_BG_COLOR_H_GRADIENT: + pixbuf_draw_gradient (dest, TRUE, &(bg->c1), &(bg->c2)); + break; + + case GNOME_BG_COLOR_V_GRADIENT: + pixbuf_draw_gradient (dest, FALSE, &(bg->c1), &(bg->c2)); + break; + + default: + break; + } +} + +static GdkPixbuf * +get_scaled_pixbuf (GnomeBGPlacement placement, + GdkPixbuf *pixbuf, + int width, int height, + int *x, int *y, int *w, int *h) +{ + GdkPixbuf *new; + +#if 0 + g_print ("original_width: %d %d\n", + gdk_pixbuf_get_width (pixbuf), + gdk_pixbuf_get_height (pixbuf)); +#endif + + switch (placement) { + case GNOME_BG_PLACEMENT_ZOOMED: + new = pixbuf_scale_to_min (pixbuf, width, height); + break; + + case GNOME_BG_PLACEMENT_CENTERED: + new = g_object_ref (pixbuf); + break; + + case GNOME_BG_PLACEMENT_FILL_SCREEN: + new = gdk_pixbuf_scale_simple (pixbuf, width, height, + GDK_INTERP_BILINEAR); + break; + + case GNOME_BG_PLACEMENT_SCALED: + new = pixbuf_scale_to_fit (pixbuf, width, height); + break; + + case GNOME_BG_PLACEMENT_TILED: + default: + new = g_object_ref (pixbuf); + break; + } + + *w = gdk_pixbuf_get_width (new); + *h = gdk_pixbuf_get_height (new); + *x = (width - *w) / 2; + *y = (height - *h) / 2; + + return new; +} + +static void +draw_image (GnomeBGPlacement placement, + GdkPixbuf *pixbuf, + GdkPixbuf *dest) +{ + int dest_width = gdk_pixbuf_get_width (dest); + int dest_height = gdk_pixbuf_get_height (dest); + int x, y, w, h; + GdkPixbuf *scaled; + + if (!pixbuf) + return; + + scaled = get_scaled_pixbuf ( + placement, pixbuf, dest_width, dest_height, &x, &y, &w, &h); + + switch (placement) { + case GNOME_BG_PLACEMENT_TILED: + pixbuf_tile (scaled, dest); + break; + case GNOME_BG_PLACEMENT_ZOOMED: + case GNOME_BG_PLACEMENT_CENTERED: + case GNOME_BG_PLACEMENT_FILL_SCREEN: + case GNOME_BG_PLACEMENT_SCALED: + pixbuf_blend (scaled, dest, 0, 0, w, h, x, y, 1.0); + break; + default: + g_assert_not_reached (); + break; + } + + g_object_unref (scaled); +} + +void +gnome_bg_draw (GnomeBG *bg, GdkPixbuf *dest) +{ + if (!bg) + return; + + draw_color (bg, dest); + + draw_image (bg->placement, get_pixbuf (bg), dest); +} + +gboolean +gnome_bg_changes_with_size (GnomeBG *bg) +{ + g_return_val_if_fail (bg != NULL, FALSE); + + if (bg->color_type != GNOME_BG_COLOR_SOLID) { + if (!get_pixbuf (bg)) + return TRUE; + if (gdk_pixbuf_get_has_alpha (get_pixbuf (bg))) + return TRUE; + if (bg->placement == GNOME_BG_PLACEMENT_CENTERED) + return TRUE; + return FALSE; + } + else if (bg->placement == GNOME_BG_PLACEMENT_TILED) { + return FALSE; + } + else { + return TRUE; + } +} + +static void +gnome_bg_get_pixmap_size (GnomeBG *bg, + int width, + int height, + int *pixmap_width, + int *pixmap_height) +{ + int dummy; + int pb_width, pb_height; + + if (!pixmap_width) + pixmap_width = &dummy; + if (!pixmap_height) + pixmap_height = &dummy; + + *pixmap_width = width; + *pixmap_height = height; + + if (!get_pixbuf (bg)) { + switch (bg->color_type) { + case GNOME_BG_COLOR_SOLID: + *pixmap_width = 1; + *pixmap_height = 1; + break; + + case GNOME_BG_COLOR_H_GRADIENT: + *pixmap_width = width; + *pixmap_height = GRADIENT_PIXMAP_TILE_SIZE; + break; + + case GNOME_BG_COLOR_V_GRADIENT: + *pixmap_width = GRADIENT_PIXMAP_TILE_SIZE; + *pixmap_height = height; + break; + } + + return; + } + + pb_width = gdk_pixbuf_get_width (get_pixbuf (bg)); + pb_height = gdk_pixbuf_get_height (get_pixbuf (bg)); + + if (bg->placement == GNOME_BG_PLACEMENT_TILED) { + if (gdk_pixbuf_get_has_alpha (get_pixbuf (bg)) && + bg->color_type != GNOME_BG_COLOR_SOLID) { + if (bg->color_type == GNOME_BG_COLOR_H_GRADIENT) { + /* FIXME: Should this be + * MAX (GRADIENT_TILE_SIZE, pb_height)? + */ + *pixmap_height = pb_height; + *pixmap_width = width; + } + else { + /* FIXME: Should this be + * MAX (GRAIDENT_TILE_SIZE, pb_width? */ + *pixmap_width = pb_width; + *pixmap_height = height; + } + } + else { + *pixmap_width = pb_width; + *pixmap_height = pb_height; + } + } +} + +/** + * gnome_bg_get_pixmap: + * @bg: GnomeBG + * @window: + * @width: + * @height: + * + * Create a pixmap that can be set as background for @window. If @root is TRUE, + * the pixmap created will be created by a temporary X server connection so + * that if someone calls XKillClient on it, it won't affect the application who + * created it. + * + * Since: 2.20 + **/ +GdkPixmap * +gnome_bg_create_pixmap (GnomeBG *bg, + GdkWindow *window, + int width, + int height, + gboolean root) +{ + int pm_width, pm_height; + GdkPixmap *pixmap; + + g_return_val_if_fail (bg != NULL, NULL); + g_return_val_if_fail (window != NULL, NULL); + + gnome_bg_get_pixmap_size (bg, width, height, &pm_width, &pm_height); + + if (root) { + pixmap = make_root_pixmap (gdk_drawable_get_screen (window), + pm_width, pm_height); + } + else { + pixmap = gdk_pixmap_new (window, pm_width, pm_height, -1); + } + + if (!get_pixbuf (bg) && bg->color_type == GNOME_BG_COLOR_SOLID) { + GdkGC *gc = gdk_gc_new (pixmap); + gdk_gc_set_rgb_fg_color (gc, &(bg->c1)); + + gdk_draw_point (pixmap, gc, 0, 0); + + g_object_unref (gc); + } + else { + GdkPixbuf *pixbuf; + + pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, + width, height); + gnome_bg_draw (bg, pixbuf); + gdk_draw_pixbuf (pixmap, NULL, pixbuf, + 0, 0, + 0, 0, width, height, + GDK_RGB_DITHER_MAX, 0, 0); + g_object_unref (pixbuf); + } + + return pixmap; +} + + +/* determine if a background is darker or lighter than average, to help + * clients know what colors to draw on top with + */ +gboolean +gnome_bg_is_dark (GnomeBG *bg) +{ + GdkColor color; + int intensity; + + g_return_val_if_fail (bg != NULL, FALSE); + + if (bg->color_type == GNOME_BG_COLOR_SOLID) { + color = bg->c1; + } else { + color.red = (bg->c1.red + bg->c2.red) / 2; + color.green = (bg->c1.green + bg->c2.green) / 2; + color.blue = (bg->c1.blue + bg->c2.blue) / 2; + } + + if (get_pixbuf (bg)) { + guint32 argb = pixbuf_average_value (get_pixbuf (bg)); + guchar a = (argb >> 24) & 0xff; + guchar r = (argb >> 16) & 0xff; + guchar g = (argb >> 8) & 0xff; + guchar b = (argb >> 0) & 0xff; + + color.red = (color.red * (0xFF - a) + r * 0x101 * a) / 0xFF; + color.green = (color.green * (0xFF - a) + g * 0x101 * a) / 0xFF; + color.blue = (color.blue * (0xFF - a) + b * 0x101 * a) / 0xFF; + } + + intensity = (color.red * 77 + + color.green * 150 + + color.blue * 28) >> 16; + + return intensity < 160; /* biased slightly to be dark */ +} + +void +gnome_bg_free (GnomeBG *bg) +{ + g_return_if_fail (bg != NULL); + + g_object_unref (G_OBJECT (bg)); +} + +/* + * Create a persistent pixmap. We create a separate display + * and set the closedown mode on it to RetainPermanent. + */ +static GdkPixmap * +make_root_pixmap (GdkScreen *screen, gint width, gint height) +{ + Display *display; + const char *display_name; + Pixmap result; + GdkPixmap *gdk_pixmap; + int screen_num; + + screen_num = gdk_screen_get_number (screen); + + gdk_flush (); + + display_name = gdk_display_get_name (gdk_screen_get_display (screen)); + display = XOpenDisplay (display_name); + + if (display == NULL) { + g_warning ("Unable to open display '%s' when setting " + "background pixmap\n", + (display_name) ? display_name : "NULL"); + return NULL; + } + + /* Desktop background pixmap should be created from + * dummy X client since most applications will try to + * kill it with XKillClient later when changing pixmap + */ + + XSetCloseDownMode (display, RetainPermanent); + + result = XCreatePixmap (display, + RootWindow (display, screen_num), + width, height, + DefaultDepth (display, screen_num)); + + XCloseDisplay (display); + + gdk_pixmap = gdk_pixmap_foreign_new (result); + gdk_drawable_set_colormap ( + GDK_DRAWABLE (gdk_pixmap), + gdk_drawable_get_colormap (gdk_screen_get_root_window (screen))); + + return gdk_pixmap; +} + +static gboolean +get_original_size (const char *uri, + int *orig_width, + int *orig_height) +{ + char *filename; + gboolean result; + + if (g_str_has_prefix (uri, "file:")) + filename = gnome_vfs_get_local_path_from_uri (uri); + else + filename = g_strdup (uri); + + if (gdk_pixbuf_get_file_info (filename, orig_width, orig_height)) + result = TRUE; + else + result = FALSE; + + g_free (filename); + + return result; +} + +gboolean +gnome_bg_get_image_size (GnomeBG *bg, + GnomeThumbnailFactory *factory, + int *width, + int *height) +{ + GdkPixbuf *thumb; + gboolean result = FALSE; + const gchar *uri; + + g_return_val_if_fail (bg != NULL, FALSE); + g_return_val_if_fail (factory != NULL, FALSE); + + if (!bg->uri) + return FALSE; + + uri = bg->uri; + thumb = create_thumbnail_for_uri (factory, uri); + + if (!thumb) { + SlideShow *show = get_as_slideshow (bg, bg->uri); + if (show) { + double alpha; + Slide *slide = get_current_slide (show, &alpha); + uri = slide->file1; + thumb = create_thumbnail_for_uri (factory, uri); + } + } + + if (thumb) { + if (get_thumb_annotations (thumb, width, height)) + result = TRUE; + + g_object_unref (thumb); + } + + if (!result) { + if (get_original_size (uri, width, height)) + result = TRUE; + } + + return result; +} + +static double +fit_factor (int from_width, int from_height, + int to_width, int to_height) +{ + return MIN (to_width / (double) from_width, to_height / (double) from_height); +} + +GdkPixbuf * +gnome_bg_create_thumbnail (GnomeBG *bg, + GnomeThumbnailFactory *factory, + GdkScreen *screen, + int dest_width, + int dest_height) +{ + GdkPixbuf *result; + GdkPixbuf *thumb; + + g_return_val_if_fail (bg != NULL, NULL); + + result = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, dest_width, dest_height); + + draw_color (bg, result); + + thumb = create_img_thumbnail (bg, factory, screen, dest_width, dest_height); + + if (thumb) { + draw_image (bg->placement, thumb, result); + g_object_unref (thumb); + } + + return result; +} + + +/* Set the root pixmap, and properties pointing to it. We + * do this atomically with XGrabServer to make sure that + * we won't leak the pixmap if somebody else it setting + * it at the same time. (This assumes that they follow the + * same conventions we do) + */ +void +gnome_bg_set_pixmap_as_root (GdkScreen *screen, GdkPixmap *pixmap) +{ + int result; + gint format; + gulong nitems; + gulong bytes_after; + guchar *data_esetroot; + Pixmap pixmap_id; + Atom type; + Display *display; + int screen_num; + + g_return_if_fail (screen != NULL); + g_return_if_fail (pixmap != NULL); + + screen_num = gdk_screen_get_number (screen); + + data_esetroot = NULL; + display = GDK_DISPLAY_XDISPLAY (gdk_screen_get_display (screen)); + + XGrabServer (display); + + result = XGetWindowProperty ( + display, RootWindow (display, screen_num), + gdk_x11_get_xatom_by_name ("ESETROOT_PMAP_ID"), + 0L, 1L, False, XA_PIXMAP, + &type, &format, &nitems, &bytes_after, + &data_esetroot); + + if (data_esetroot != NULL) { + if (result == Success && type == XA_PIXMAP && + format == 32 && + nitems == 1) { + gdk_error_trap_push (); + XKillClient (display, *(Pixmap *)data_esetroot); + gdk_flush (); + gdk_error_trap_pop (); + } + XFree (data_esetroot); + } + + pixmap_id = GDK_WINDOW_XWINDOW (pixmap); + + XChangeProperty (display, RootWindow (display, screen_num), + gdk_x11_get_xatom_by_name ("ESETROOT_PMAP_ID"), + XA_PIXMAP, 32, PropModeReplace, + (guchar *) &pixmap_id, 1); + XChangeProperty (display, RootWindow (display, screen_num), + gdk_x11_get_xatom_by_name ("_XROOTPMAP_ID"), XA_PIXMAP, + 32, PropModeReplace, + (guchar *) &pixmap_id, 1); + + XSetWindowBackgroundPixmap (display, RootWindow (display, screen_num), + pixmap_id); + XClearWindow (display, RootWindow (display, screen_num)); + + XUngrabServer (display); + + XFlush (display); +} + + +/* Implementation of the pixbuf cache */ +struct _SlideShow +{ + double start_time; + double total_duration; + + GQueue *slides; + + /* used during parsing */ + struct tm start_tm; + GQueue *stack; +}; + +static SlideShow *read_slideshow_file (const char *filename, + GError **err); +static void slideshow_free (SlideShow *show); + +static double +now (void) +{ + GTimeVal tv; + time_t t; + + g_get_current_time (&tv); + + time (&t); + + return (double)tv.tv_sec + (tv.tv_usec / 1000000.0); +} + +static Slide * +get_current_slide (SlideShow *show, + double *alpha) +{ + double delta = fmod (now() - show->start_time, show->total_duration); + GList *list; + double elapsed; + int i; + + elapsed = 0; + i = 0; + for (list = show->slides->head; list != NULL; list = list->next) { + Slide *slide = list->data; + + if (elapsed + slide->duration > delta) { + *alpha = (delta - elapsed) / (double)slide->duration; + return slide; + } + + i++; + elapsed += slide->duration; + } + + return NULL; +} + +static GdkPixbuf * +blend (GdkPixbuf *p1, + GdkPixbuf *p2, + double alpha) +{ + GdkPixbuf *result = gdk_pixbuf_copy (p1); + GdkPixbuf *tmp; + + if (gdk_pixbuf_get_width (p2) != gdk_pixbuf_get_width (p1) || + gdk_pixbuf_get_height (p2) != gdk_pixbuf_get_height (p1)) + tmp = gdk_pixbuf_scale_simple (p2, + gdk_pixbuf_get_width (p1), + gdk_pixbuf_get_height (p1), + GDK_INTERP_BILINEAR); + else + tmp = g_object_ref (p2); + + pixbuf_blend (tmp, result, 0, 0, -1, -1, 0, 0, alpha); + + g_object_unref (tmp); + + return result; +} + +typedef enum { + PIXBUF, + SLIDESHOW, + THUMBNAIL +} FileType; + +struct FileCacheEntry +{ + FileType type; + char *uri; + union { + GdkPixbuf *pixbuf; + SlideShow *slideshow; + GdkPixbuf *thumbnail; + } u; +}; + +static void +file_cache_entry_delete (FileCacheEntry *ent) +{ + g_free (ent->uri); + + switch (ent->type) { + case PIXBUF: + g_object_unref (ent->u.pixbuf); + break; + case SLIDESHOW: + slideshow_free (ent->u.slideshow); + break; + case THUMBNAIL: + g_object_unref (ent->u.thumbnail); + break; + } + + g_free (ent); +} + +static void +bound_cache (GnomeBG *bg) +{ + while (g_list_length (bg->file_cache) >= CACHE_SIZE) { + GList *last_link = g_list_last (bg->file_cache); + FileCacheEntry *ent = last_link->data; + + file_cache_entry_delete (ent); + + bg->file_cache = g_list_delete_link (bg->file_cache, last_link); + } +} + +static const FileCacheEntry * +file_cache_lookup (GnomeBG *bg, FileType type, const char *uri) +{ + GList *list; + + for (list = bg->file_cache; list != NULL; list = list->next) { + FileCacheEntry *ent = list->data; + + if (ent && ent->type == type && strcmp (ent->uri, uri) == 0) + return ent; + } + + return NULL; +} + +static FileCacheEntry * +file_cache_entry_new (GnomeBG *bg, + FileType type, + const char *uri) +{ + FileCacheEntry *ent = g_new0 (FileCacheEntry, 1); + + g_assert (!file_cache_lookup (bg, type, uri)); + + ent->type = type; + ent->uri = g_strdup (uri); + + bg->file_cache = g_list_prepend (bg->file_cache, ent); + + bound_cache (bg); + + return ent; +} + +static void +file_cache_add_pixbuf (GnomeBG *bg, + const char *uri, + GdkPixbuf *pixbuf) +{ + FileCacheEntry *ent = file_cache_entry_new (bg, PIXBUF, uri); + ent->u.pixbuf = pixbuf; +} + +static void +file_cache_add_thumbnail (GnomeBG *bg, + const char *uri, + GdkPixbuf *pixbuf) +{ + FileCacheEntry *ent = file_cache_entry_new (bg, THUMBNAIL, uri); + ent->u.thumbnail = pixbuf; +} + +static void +file_cache_add_slide_show (GnomeBG *bg, + const char *uri, + SlideShow *show) +{ + FileCacheEntry *ent = file_cache_entry_new (bg, SLIDESHOW, uri); + ent->u.slideshow = show; +} + +static GdkPixbuf * +get_as_pixbuf (GnomeBG *bg, const char *uri) +{ + const FileCacheEntry *ent; + if ((ent = file_cache_lookup (bg, PIXBUF, uri))) { + return ent->u.pixbuf; + } + else { + GdkPixbuf *pixbuf = gnome_gdk_pixbuf_new_from_uri (uri); + + if (pixbuf) + file_cache_add_pixbuf (bg, uri, pixbuf); + + return pixbuf; + } +} + +static SlideShow * +get_as_slideshow (GnomeBG *bg, const char *uri) +{ + const FileCacheEntry *ent; + if ((ent = file_cache_lookup (bg, SLIDESHOW, uri))) { + return ent->u.slideshow; + } + else { + SlideShow *show = read_slideshow_file (uri, NULL); + + if (show) + file_cache_add_slide_show (bg, uri, show); + + return show; + } +} + +static GdkPixbuf * +get_as_thumbnail (GnomeBG *bg, GnomeThumbnailFactory *factory, const char *uri) +{ + const FileCacheEntry *ent; + if ((ent = file_cache_lookup (bg, THUMBNAIL, uri))) { + return ent->u.thumbnail; + } + else { + GdkPixbuf *thumb = create_thumbnail_for_uri (factory, uri); + + if (thumb) + file_cache_add_thumbnail (bg, uri, thumb); + + return thumb; + } +} + +static gboolean +on_timeout (gpointer data) +{ + GnomeBG *bg = data; + + if (bg->pixbuf_cache) { + g_object_unref (bg->pixbuf_cache); + bg->pixbuf_cache = NULL; + } + + bg->timeout_id = 0; + + emit_changed (bg); + + return FALSE; +} + +static void +ensure_timeout (GnomeBG *bg, + Slide *slide) +{ + if (!bg->timeout_id) { + double timeout; + + if (slide->fixed) { + timeout = slide->duration; + } + else { + /* Maybe the number of steps should be configurable? */ + timeout = slide->duration / 255.0; + } + + bg->timeout_id = g_timeout_add_full ( + G_PRIORITY_LOW, + timeout * 1000, on_timeout, bg, NULL); + + } +} + +static time_t +get_mtime (const char *uri) +{ + time_t mtime; + GnomeVFSFileInfo *info; + + mtime = (time_t)-1; + + if (uri) { + GnomeVFSResult vfs_res; + + info = gnome_vfs_file_info_new (); + + vfs_res = gnome_vfs_get_file_info ( + uri, info, GNOME_VFS_FILE_INFO_FOLLOW_LINKS); + + if (vfs_res == GNOME_VFS_OK) + mtime = info->mtime; + + gnome_vfs_file_info_unref (info); + } + + return mtime; +} + +static GdkPixbuf * +scale_thumbnail (GnomeBGPlacement placement, + const char *uri, + GdkPixbuf *thumb, + GdkScreen *screen, + int dest_width, + int dest_height) +{ + int o_width; + int o_height; + + if (placement != GNOME_BG_PLACEMENT_TILED && + placement != GNOME_BG_PLACEMENT_CENTERED) { + + /* In this case, the pixbuf will be scaled to fit the screen anyway, + * so just return the pixbuf here + */ + return g_object_ref (thumb); + } + + /* FIXME: in case of tiled, we should probably scale the pixbuf to + * be maybe dest_width/4 pixels tall. While strictly speaking incorrect, + * it might give a better idea of what the background would actually look + * like. + */ + if (get_thumb_annotations (thumb, &o_width, &o_height) || + (uri && get_original_size (uri, &o_width, &o_height))) { + + int scr_height = gdk_screen_get_height (screen); + int scr_width = gdk_screen_get_width (screen); + int thumb_width = gdk_pixbuf_get_width (thumb); + int thumb_height = gdk_pixbuf_get_height (thumb); + double screen_to_dest = fit_factor (scr_width, scr_height, + dest_width, dest_height); + double thumb_to_orig = fit_factor (thumb_width, thumb_height, + o_width, o_height); + double f = thumb_to_orig * screen_to_dest; + int new_width, new_height; + + new_width = floor (thumb_width * f + 0.5); + new_height = floor (thumb_height * f + 0.5); + + thumb = gdk_pixbuf_scale_simple (thumb, new_width, new_height, + GDK_INTERP_BILINEAR); + } + else + g_object_ref (thumb); + + return thumb; +} + +static GdkPixbuf * +create_img_thumbnail (GnomeBG *bg, + GnomeThumbnailFactory *factory, + GdkScreen *screen, + int dest_width, + int dest_height) +{ + if (bg->uri) { + GdkPixbuf *thumb = get_as_thumbnail (bg, factory, bg->uri); + + if (thumb) { + return scale_thumbnail ( + bg->placement, bg->uri, + thumb, screen, dest_width, dest_height); + } + else { + SlideShow *show = get_as_slideshow (bg, bg->uri); + + if (show) { + double alpha; + Slide *slide = get_current_slide (show, &alpha); + + if (slide->fixed) { + GdkPixbuf *tmp; + + tmp = get_as_thumbnail (bg, factory, slide->file1); + + thumb = scale_thumbnail ( + bg->placement, bg->uri, + tmp, screen, dest_width, dest_height); + } + else { + GdkPixbuf *p1 = get_as_thumbnail (bg, factory, slide->file1); + GdkPixbuf *p2 = get_as_thumbnail (bg, factory, slide->file2); + + if (p1 && p2) { + GdkPixbuf *thumb1, *thumb2; + + thumb1 = scale_thumbnail ( + bg->placement, bg->uri, + p1, screen, dest_width, dest_height); + thumb2 = scale_thumbnail ( + bg->placement, bg->uri, + p2, screen, dest_width, dest_height); + + thumb = blend (thumb1, thumb2, alpha); + + g_object_unref (thumb1); + g_object_unref (thumb2); + } + } + + ensure_timeout (bg, slide); + } + } + + return thumb; + } + + return NULL; +} + +static GdkPixbuf * +get_pixbuf (GnomeBG *bg) +{ + /* FIXME: this ref=TRUE/FALSE stuff is crazy */ + + gboolean ref = FALSE; + + if (!bg->pixbuf_cache && bg->uri) { + ref = TRUE; + bg->uri_mtime = get_mtime (bg->uri); + + bg->pixbuf_cache = get_as_pixbuf (bg, bg->uri); + if (!bg->pixbuf_cache) { + SlideShow *show = get_as_slideshow (bg, bg->uri); + + if (show) { + double alpha; + Slide *slide = get_current_slide (show, &alpha); + + if (slide->fixed) { + bg->pixbuf_cache = get_as_pixbuf (bg, slide->file1); + } + else { + GdkPixbuf *p1 = get_as_pixbuf (bg, slide->file1); + GdkPixbuf *p2 = get_as_pixbuf (bg, slide->file2); + + if (p1 && p2) { + bg->pixbuf_cache = blend (p1, p2, alpha); + ref = FALSE; + } + } + + ensure_timeout (bg, slide); + } + } + } + + if (bg->pixbuf_cache && ref) + g_object_ref (bg->pixbuf_cache); + + return bg->pixbuf_cache; +} + +static gboolean +is_different (GnomeBG *bg, + const char *uri) +{ + if (!uri && bg->uri) { + return TRUE; + } + else if (uri && !bg->uri) { + return TRUE; + } + else if (!uri && !bg->uri) { + return FALSE; + } + else { + time_t mtime = get_mtime (uri); + + if (mtime != bg->uri_mtime) + return TRUE; + + if (strcmp (uri, bg->uri) != 0) + return TRUE; + + return FALSE; + } +} + +static void +clear_cache (GnomeBG *bg) +{ + GList *list; + + if (bg->file_cache) { + for (list = bg->file_cache; list != NULL; list = list->next) { + FileCacheEntry *ent = list->data; + + file_cache_entry_delete (ent); + } + g_list_free (bg->file_cache); + bg->file_cache = NULL; + } + + if (bg->pixbuf_cache) { + g_object_unref (bg->pixbuf_cache); + + bg->pixbuf_cache = NULL; + } + + if (bg->timeout_id) { + g_source_remove (bg->timeout_id); + + bg->timeout_id = 0; + } +} + +/* Pixbuf utilities */ +static guint32 +pixbuf_average_value (GdkPixbuf *pixbuf) +{ + guint64 a_total, r_total, g_total, b_total; + guint row, column; + int row_stride; + const guchar *pixels, *p; + int r, g, b, a; + guint64 dividend; + guint width, height; + + width = gdk_pixbuf_get_width (pixbuf); + height = gdk_pixbuf_get_height (pixbuf); + row_stride = gdk_pixbuf_get_rowstride (pixbuf); + pixels = gdk_pixbuf_get_pixels (pixbuf); + + /* iterate through the pixbuf, counting up each component */ + a_total = 0; + r_total = 0; + g_total = 0; + b_total = 0; + + if (gdk_pixbuf_get_has_alpha (pixbuf)) { + for (row = 0; row < height; row++) { + p = pixels + (row * row_stride); + for (column = 0; column < width; column++) { + r = *p++; + g = *p++; + b = *p++; + a = *p++; + + a_total += a; + r_total += r * a; + g_total += g * a; + b_total += b * a; + } + } + dividend = height * width * 0xFF; + a_total *= 0xFF; + } else { + for (row = 0; row < height; row++) { + p = pixels + (row * row_stride); + for (column = 0; column < width; column++) { + r = *p++; + g = *p++; + b = *p++; + + r_total += r; + g_total += g; + b_total += b; + } + } + dividend = height * width; + a_total = dividend * 0xFF; + } + + return ((a_total + dividend / 2) / dividend) << 24 + | ((r_total + dividend / 2) / dividend) << 16 + | ((g_total + dividend / 2) / dividend) << 8 + | ((b_total + dividend / 2) / dividend); +} + +static GdkPixbuf * +pixbuf_scale_to_fit (GdkPixbuf *src, int max_width, int max_height) +{ + double factor; + int src_width, src_height; + int new_width, new_height; + + src_width = gdk_pixbuf_get_width (src); + src_height = gdk_pixbuf_get_height (src); + + factor = MIN (max_width / (double) src_width, max_height / (double) src_height); + + new_width = floor (src_width * factor + 0.5); + new_height = floor (src_height * factor + 0.5); + + return gdk_pixbuf_scale_simple (src, new_width, new_height, GDK_INTERP_BILINEAR); +} + +static GdkPixbuf * +pixbuf_scale_to_min (GdkPixbuf *src, int min_width, int min_height) +{ + double factor; + int src_width, src_height; + int new_width, new_height; + + src_width = gdk_pixbuf_get_width (src); + src_height = gdk_pixbuf_get_height (src); + + factor = MAX (min_width / (double) src_width, min_height / (double) src_height); + + new_width = floor (src_width * factor + 0.5); + new_height = floor (src_height * factor + 0.5); + + return gdk_pixbuf_scale_simple (src, new_width, new_height, GDK_INTERP_BILINEAR); +} + +static guchar * +create_gradient (const GdkColor *c1, + const GdkColor *c2, + int n_pixels) +{ + guchar *result = g_malloc (n_pixels * 3); + int i; + + for (i = 0; i < n_pixels; ++i) { + double ratio = (i + 0.5) / n_pixels; + + result[3 * i + 0] = ((guint16) (c1->red * (1 - ratio) + c2->red * ratio)) >> 8; + result[3 * i + 1] = ((guint16) (c1->green * (1 - ratio) + c2->green * ratio)) >> 8; + result[3 * i + 2] = ((guint16) (c1->blue * (1 - ratio) + c2->blue * ratio)) >> 8; + } + + return result; +} + +static void +pixbuf_draw_gradient (GdkPixbuf *pixbuf, + gboolean horizontal, + GdkColor *c1, + GdkColor *c2) +{ + int width = gdk_pixbuf_get_width (pixbuf); + int height = gdk_pixbuf_get_height (pixbuf); + int rowstride = gdk_pixbuf_get_rowstride (pixbuf); + guchar *dst = gdk_pixbuf_get_pixels (pixbuf); + guchar *dst_limit = dst + height * rowstride; + + if (horizontal) { + guchar *gradient = create_gradient (c1, c2, width); + int copy_bytes_per_row = width * 3; + + while (dst < dst_limit) { + memcpy (dst, gradient, copy_bytes_per_row); + dst += rowstride; + } + g_free (gradient); + } else { + guchar *gb, *gradient; + + gb = gradient = create_gradient (c1, c2, height); + while (dst < dst_limit) { + int i; + guchar *d = dst; + guchar r = *gb++; + guchar g = *gb++; + guchar b = *gb++; + for (i = 0; i < width; i++) { + *d++ = r; + *d++ = g; + *d++ = b; + } + dst += rowstride; + } + g_free (gradient); + } +} + +static void +pixbuf_blend (GdkPixbuf *src, + GdkPixbuf *dest, + int src_x, + int src_y, + int width, + int height, + int dest_x, + int dest_y, + double alpha) +{ + int dest_width = gdk_pixbuf_get_width (dest); + int dest_height = gdk_pixbuf_get_height (dest); + int offset_x = dest_x - src_x; + int offset_y = dest_y - src_y; + + if (width < 0) + width = gdk_pixbuf_get_width (src); + + if (height < 0) + height = gdk_pixbuf_get_height (src); + + if (dest_x < 0) { + offset_x -= dest_x; + dest_x = 0; + } + + if (dest_y < 0) { + offset_y -= dest_y; + dest_y = 0; + } + + if (dest_x + width > dest_width) { + width = dest_width - dest_x; + } + + if (dest_y + height > dest_height) { + height = dest_height - dest_y; + } + + gdk_pixbuf_composite (src, dest, + dest_x, dest_y, + width, height, + offset_x, offset_y, + 1, 1, GDK_INTERP_NEAREST, + alpha * 0xFF + 0.5); +} + +static void +pixbuf_tile (GdkPixbuf *src, GdkPixbuf *dest) +{ + int x, y; + int tile_width, tile_height; + int dest_width = gdk_pixbuf_get_width (dest); + int dest_height = gdk_pixbuf_get_height (dest); + + tile_width = gdk_pixbuf_get_width (src); + tile_height = gdk_pixbuf_get_height (src); + + for (y = 0; y < dest_height; y += tile_height) { + for (x = 0; x < dest_width; x += tile_width) { + pixbuf_blend (src, dest, 0, 0, + tile_width, tile_height, x, y, 1.0); + } + } +} + + +/* Parser for fading background */ +static void +handle_start_element (GMarkupParseContext *context, + const gchar *name, + const gchar **attr_names, + const gchar **attr_values, + gpointer user_data, + GError **err) +{ + SlideShow *parser = user_data; + + if (strcmp (name, "static") == 0 || strcmp (name, "transition") == 0) { + Slide *slide = g_new0 (Slide, 1); + + if (strcmp (name, "static") == 0) + slide->fixed = TRUE; + + g_queue_push_tail (parser->slides, slide); + } + + g_queue_push_tail (parser->stack, g_strdup (name)); +} + +static void +handle_end_element (GMarkupParseContext *context, + const gchar *name, + gpointer user_data, + GError **err) +{ + SlideShow *parser = user_data; + + g_free (g_queue_pop_tail (parser->stack)); +} + +static gboolean +stack_is (SlideShow *parser, + const char *s1, + ...) +{ + GList *stack = NULL; + const char *s; + GList *l1, *l2; + va_list args; + + stack = g_list_prepend (stack, (gpointer)s1); + + va_start (args, s1); + + s = va_arg (args, const char *); + while (s) { + stack = g_list_prepend (stack, (gpointer)s); + s = va_arg (args, const char *); + } + + l1 = stack; + l2 = parser->stack->head; + + while (l1 && l2) { + if (strcmp (l1->data, l2->data) != 0) { + g_list_free (stack); + return FALSE; + } + + l1 = l1->next; + l2 = l2->next; + } + + g_list_free (stack); + + return (!l1 && !l2); +} + +static int +parse_int (const char *text) +{ + return strtol (text, NULL, 0); +} + +static void +handle_text (GMarkupParseContext *context, + const gchar *text, + gsize text_len, + gpointer user_data, + GError **err) +{ + SlideShow *parser = user_data; + Slide *slide = parser->slides->tail? parser->slides->tail->data : NULL; + + if (stack_is (parser, "year", "starttime", "background", NULL)) { + parser->start_tm.tm_year = parse_int (text) - 1900; + } + else if (stack_is (parser, "month", "starttime", "background", NULL)) { + parser->start_tm.tm_mon = parse_int (text) - 1; + } + else if (stack_is (parser, "day", "starttime", "background", NULL)) { + parser->start_tm.tm_mday = parse_int (text); + } + else if (stack_is (parser, "hour", "starttime", "background", NULL)) { + parser->start_tm.tm_hour = parse_int (text) - 1; + } + else if (stack_is (parser, "minute", "starttime", "background", NULL)) { + parser->start_tm.tm_min = parse_int (text); + } + else if (stack_is (parser, "second", "starttime", "background", NULL)) { + parser->start_tm.tm_sec = parse_int (text); + } + else if (stack_is (parser, "duration", "static", "background", NULL) || + stack_is (parser, "duration", "transition", "background", NULL)) { + slide->duration = g_strtod (text, NULL); + parser->total_duration += slide->duration; + } + else if (stack_is (parser, "file", "static", "background", NULL) || + stack_is (parser, "from", "transition", "background", NULL)) { + slide->file1 = g_strdup (text); + } + else if (stack_is (parser, "to", "transition", "background", NULL)) { + slide->file2 = g_strdup (text); + } +} + +static void +slideshow_free (SlideShow *show) +{ + GList *list; + + for (list = show->slides->head; list != NULL; list = list->next) { + Slide *slide = list->data; + + g_free (slide->file1); + g_free (slide->file2); + g_free (slide); + } + + g_queue_free (show->slides); + + for (list = show->stack->head; list != NULL; list = list->next) { + gchar *str = list->data; + + g_free (str); + } + + g_queue_free (show->stack); + + g_free (show); +} + +static void +dump_bg (SlideShow *show) +{ +#if 0 + GList *list; + + for (list = show->slides->head; list != NULL; list = list->next) + { + Slide *slide = list->data; + + g_print ("\nSlide: %s\n", slide->fixed? "fixed" : "transition"); + g_print ("duration: %d\n", slide->duration); + g_print ("file1: %p %s\n", slide, slide->file1); + g_print ("file2: %s\n", slide->file2); + } +#endif +} + +static void +threadsafe_localtime (time_t time, struct tm *tm) +{ + struct tm *res; + + G_LOCK_DEFINE_STATIC (localtime_mutex); + + G_LOCK (localtime_mutex); + + res = localtime (&time); + if (tm) { + *tm = *res; + } + + G_UNLOCK (localtime_mutex); +} + +static SlideShow * +read_slideshow_file (const char *uri, + GError **err) +{ + GMarkupParser parser = { + handle_start_element, + handle_end_element, + handle_text, + NULL, /* passthrough */ + NULL, /* error */ + }; + + char *contents = NULL; + gssize len; + SlideShow *show = NULL; + GMarkupParseContext *context = NULL; + time_t t; + + if (!uri || (gnome_vfs_read_entire_file (uri, &len, &contents) != GNOME_VFS_OK)) + return NULL; + + show = g_new0 (SlideShow, 1); + threadsafe_localtime ((time_t)0, &show->start_tm); + show->stack = g_queue_new (); + show->slides = g_queue_new (); + + context = g_markup_parse_context_new (&parser, 0, show, NULL); + + if (!g_markup_parse_context_parse (context, contents, len, err)) { + slideshow_free (show); + show = NULL; + } + + if (!g_markup_parse_context_end_parse (context, err)) { + slideshow_free (show); + show = NULL; + } + + g_markup_parse_context_free (context); + + t = mktime (&show->start_tm); + + g_print ("start time: %s\n", asctime (&show->start_tm)); + + show->start_time = (double)t; + + dump_bg (show); + + g_free (contents); + + return show; +} + +/* Thumbnail utilities */ +static GdkPixbuf * +create_thumbnail_for_uri (GnomeThumbnailFactory *factory, + const char *uri) +{ + char *filename; + time_t mtime; + GdkPixbuf *pixbuf, *orig; + + mtime = get_mtime (uri); + + if (mtime == (time_t)-1) + return NULL; + + filename = gnome_thumbnail_factory_lookup (factory, uri, mtime); + + if (filename) { + pixbuf = gdk_pixbuf_new_from_file (filename, NULL); + + return pixbuf; + } + + orig = gnome_gdk_pixbuf_new_from_uri (uri); + if (orig) { + int orig_width = gdk_pixbuf_get_width (orig); + int orig_height = gdk_pixbuf_get_height (orig); + + pixbuf = pixbuf_scale_to_fit (orig, 128, 128); + + g_object_set_data_full (G_OBJECT (pixbuf), "gnome-thumbnail-height", + g_strdup_printf ("%d", orig_height), g_free); + g_object_set_data_full (G_OBJECT (pixbuf), "gnome-thumbnail-width", + g_strdup_printf ("%d", orig_width), g_free); + + g_object_unref (orig); + + gnome_thumbnail_factory_save_thumbnail (factory, pixbuf, uri, mtime); + + return pixbuf; + } + + gnome_thumbnail_factory_create_failed_thumbnail (factory, uri, mtime); + return NULL; +} + +static gboolean +get_thumb_annotations (GdkPixbuf *thumb, + int *orig_width, + int *orig_height) +{ + char *end; + const char *wstr, *hstr; + + wstr = gdk_pixbuf_get_option (thumb, "tEXt::Thumb::Image::Width"); + hstr = gdk_pixbuf_get_option (thumb, "tEXt::Thumb::Image::Height"); + + if (hstr && wstr) { + *orig_width = strtol (wstr, &end, 10); + if (*end != 0) + return FALSE; + + *orig_height = strtol (hstr, &end, 10); + if (*end != 0) + return FALSE; + + return TRUE; + } + + return FALSE; +} --- gnome-desktop-2.19.90/libgnome-desktop/Makefile.am.gnome-bg 2007-08-13 20:04:00.000000000 -0400 +++ gnome-desktop-2.19.90/libgnome-desktop/Makefile.am 2007-08-29 17:22:58.000000000 -0400 @@ -18,7 +18,8 @@ libgnome_desktop_2_la_SOURCES = \ gnome-desktop-item.c \ gnome-ditem-edit.c \ - gnome-hint.c + gnome-hint.c \ + gnome-bg.c libgnome_desktop_2_la_LIBADD = \ $(GNOME_DESKTOP_LIBS) --- gnome-desktop-2.19.90/libgnome-desktop/libgnomeui/Makefile.am.gnome-bg 2007-08-13 20:04:00.000000000 -0400 +++ gnome-desktop-2.19.90/libgnome-desktop/libgnomeui/Makefile.am 2007-08-29 17:22:58.000000000 -0400 @@ -1,4 +1,5 @@ libgnomeui_desktopdir = $(includedir)/gnome-desktop-2.0/libgnomeui libgnomeui_desktop_HEADERS = \ gnome-ditem-edit.h \ - gnome-hint.h + gnome-hint.h \ + gnome-bg.h --- /dev/null 2007-08-15 18:04:26.337218222 -0400 +++ gnome-desktop-2.19.90/libgnome-desktop/libgnomeui/gnome-bg.h 2007-08-29 17:22:58.000000000 -0400 @@ -0,0 +1,99 @@ +/* gnome-bg.h - + + Copyright 2007, Red Hat, Inc. + + This file is part of the Gnome Library. + + The Gnome 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. + + The Gnome 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 the Gnome Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + Author: Soren Sandmann +*/ + +#ifndef __GNOME_BG_H__ +#define __GNOME_BG_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include + +#define GNOME_TYPE_BG (gnome_bg_get_type ()) +#define GNOME_BG(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GNOME_TYPE_BG, GnomeBG)) +#define GNOME_BG_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GNOME_TYPE_BG, GnomeBGClass)) +#define GNOME_IS_BG(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GNOME_TYPE_BG)) +#define GNOME_IS_BG_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GNOME_TYPE_BG)) +#define GNOME_BG_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GNOME_TYPE_BG, GnomeBGClass)) + +typedef struct _GnomeBG GnomeBG; +typedef struct _GnomeBGClass GnomeBGClass; + +typedef enum { + GNOME_BG_COLOR_SOLID, + GNOME_BG_COLOR_H_GRADIENT, + GNOME_BG_COLOR_V_GRADIENT +} GnomeBGColorType; + +typedef enum { + GNOME_BG_PLACEMENT_TILED, + GNOME_BG_PLACEMENT_ZOOMED, + GNOME_BG_PLACEMENT_CENTERED, + GNOME_BG_PLACEMENT_SCALED, + GNOME_BG_PLACEMENT_FILL_SCREEN +} GnomeBGPlacement; + +GType gnome_bg_get_type (void); +GnomeBG * gnome_bg_new (void); +void gnome_bg_free (GnomeBG *img); +void gnome_bg_set_placement (GnomeBG *img, + GnomeBGPlacement placement); +void gnome_bg_set_color (GnomeBG *img, + GnomeBGColorType type, + GdkColor *c1, + GdkColor *c2); +void gnome_bg_set_uri (GnomeBG *img, + const char *uri); +void gnome_bg_draw (GnomeBG *img, + GdkPixbuf *dest); +GdkPixmap *gnome_bg_create_pixmap (GnomeBG *img, + GdkWindow *window, + int width, + int height, + gboolean root); +gboolean gnome_bg_get_image_size (GnomeBG *bg, + GnomeThumbnailFactory *factory, + int *width, + int *height); +GdkPixbuf *gnome_bg_create_thumbnail (GnomeBG *bg, + GnomeThumbnailFactory *factory, + GdkScreen *screen, + int dest_width, + int dest_height); +gboolean gnome_bg_is_dark (GnomeBG *img); +gboolean gnome_bg_changes_with_size (GnomeBG *img); + + +/* Set a pixmap as root - not a GnomeBG method */ +void gnome_bg_set_pixmap_as_root (GdkScreen *screen, + GdkPixmap *pixmap); + + +#ifdef __cplusplus +} +#endif + +#endif