/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- nautilus-icon-factory.h: Class for obtaining icons for files and other objects. Copyright (C) 1999, 2000 Red Hat Inc. Copyright (C) 1999, 2000 Eazel, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU 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 General Public License for more details. You should have received a copy of the GNU 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. Author: John Sullivan */ #ifndef NAUTILUS_ICON_FACTORY_H #define NAUTILUS_ICON_FACTORY_H #include #include #include #include /* NautilusIconFactory is a class that knows how to hand out icons to be * used for representing files and some other objects. It was designed * specifically to be useful for the Nautilus file browser, but could be * used by any program that wants to display the standard icon for a * file. * * The most common usage is to get a NautilusIconFactory object with * nautilus_get_current_icon_factory, then ask for an icon for a specific * file with nautilus_icon_factory_get_icon_for_file. The caller can ask * for any size icon, but normally will use one of the defined * NAUTILUS_ICON_SIZE macros. */ /* Names for Nautilus's different zoom levels, from tiniest items to largest items */ typedef enum { NAUTILUS_ZOOM_LEVEL_SMALLEST, NAUTILUS_ZOOM_LEVEL_SMALLER, NAUTILUS_ZOOM_LEVEL_SMALL, NAUTILUS_ZOOM_LEVEL_STANDARD, NAUTILUS_ZOOM_LEVEL_LARGE, NAUTILUS_ZOOM_LEVEL_LARGER, NAUTILUS_ZOOM_LEVEL_LARGEST } NautilusZoomLevel; /* Nominal icon sizes for each Nautilus zoom level. * This scheme assumes that icons are designed to * fit in a square space, though each image needn't * be square. Since individual icons can be stretched, * each icon is not constrained to this nominal size. */ #define NAUTILUS_ICON_SIZE_SMALLEST 12 #define NAUTILUS_ICON_SIZE_SMALLER 24 #define NAUTILUS_ICON_SIZE_SMALL 36 #define NAUTILUS_ICON_SIZE_STANDARD 48 #define NAUTILUS_ICON_SIZE_LARGE 72 #define NAUTILUS_ICON_SIZE_LARGER 96 #define NAUTILUS_ICON_SIZE_LARGEST 192 /* Icon size to use for menus. NAUTILUS_ICON_SIZE_SMALLEST * is a little too small and NAUTILUS_ICON_SIZE_SMALLER is * a little too big. */ #define NAUTILUS_ICON_SIZE_FOR_MENUS 20 typedef struct NautilusScalableIcon NautilusScalableIcon; /* here's a structure to hold the emblem attach points */ #define MAX_ATTACH_POINTS 8 typedef struct { gboolean has_attach_points; GdkPoint attach_points[MAX_ATTACH_POINTS]; } EmblemAttachPoints; /* Instead of a class declaration here, I will just document * the signals. * * "icons_changed", no parameters */ /* There's a single NautilusIconFactory object. * The only thing you need it for is to connect to its signals. */ GtkObject * nautilus_icon_factory_get (void); /* Relationship between zoom levels and icons sizes. */ guint nautilus_get_icon_size_for_zoom_level (NautilusZoomLevel zoom_level); /* Choose the appropriate icon, but don't render it yet. */ NautilusScalableIcon *nautilus_icon_factory_get_icon_for_file (NautilusFile *file, const char *modifier, gboolean anti_aliased); gboolean nautilus_icon_factory_is_icon_ready_for_file (NautilusFile *file); GList * nautilus_icon_factory_get_required_file_attributes (void); GList * nautilus_icon_factory_get_emblem_icons_for_file (NautilusFile *file, gboolean anti_aliased, NautilusStringList *exclude); NautilusScalableIcon *nautilus_icon_factory_get_emblem_icon_by_name (const char *emblem_name, gboolean anti_aliased); /* Render an icon to a particular size. * Ownership of a ref. count in this pixbuf comes with the deal. * This allows scaling in both dimensions. All other calls assume * that X and Y scaling are the same. Optionally, we also pass * back an array of emblem attach points, if the pointer is non-null */ GdkPixbuf * nautilus_icon_factory_get_pixbuf_for_icon (NautilusScalableIcon *scalable_icon, guint nominal_size_in_pixels_x, guint nominal_size_in_pixels_y, guint maximum_size_in_pixels_x, guint maximum_size_in_pixels_y, EmblemAttachPoints *attach_points); /* Convenience functions for the common case where you want to choose * and render the icon into a pixbuf all at once. */ GdkPixbuf * nautilus_icon_factory_get_pixbuf_for_file (NautilusFile *file, const char *modifer, guint size_in_pixels, gboolean anti_aliased); /* Convenience functions for legacy interfaces that require a pixmap and * bitmap. Maybe we can get rid of these one day. */ void nautilus_icon_factory_get_pixmap_and_mask_for_file (NautilusFile *file, const char *modifer, guint size_in_pixels, GdkPixmap **pixmap, GdkBitmap **mask); /* Manage a scalable icon. * Since the factory always passes out references to the same scalable * icon, you can compare two scalable icons to see if they are the same * with ==. */ void nautilus_scalable_icon_ref (NautilusScalableIcon *scalable_icon); void nautilus_scalable_icon_unref (NautilusScalableIcon *scalable_icon); /* A scalable icon can be decomposed into text and reconstituted later * using nautilus_scalable_icon_new_from_text_pieces. This is the way * to store scalable icons in metadata or other files. */ void nautilus_scalable_icon_get_text_pieces (NautilusScalableIcon *scalable_icon, char **uri_return, char **name_return, char **modifier_return, char **embedded_text_return); /* Get a scalable icon using the earlier results of * nautilus_scalable_icon_get_text_pieces. */ NautilusScalableIcon *nautilus_scalable_icon_new_from_text_pieces (const char *uri, const char *name, const char *modifier, const char *embedded_text, gboolean anti_aliased); /* Convenience function for freeing a list of scalable icons. * Unrefs all the icons before freeing the list. */ void nautilus_scalable_icon_list_free (GList *scalable_icon_list); #endif /* NAUTILUS_ICON_FACTORY_H */