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Diffstat (limited to 'src/nautilus-canvas-view-container.c')
| -rw-r--r-- | src/nautilus-canvas-view-container.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/src/nautilus-canvas-view-container.c b/src/nautilus-canvas-view-container.c new file mode 100644 index 0000000..a8b1f8a --- /dev/null +++ b/src/nautilus-canvas-view-container.c @@ -0,0 +1,377 @@ +/* fm-icon-container.h - the container widget for file manager icons + * + * Copyright (C) 2002 Sun Microsystems, Inc. + * + * 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, + * see <http://www.gnu.org/licenses/>. + * + * Author: Michael Meeks <michael@ximian.com> + */ + +#include "nautilus-canvas-view-container.h" + +#include <eel/eel-glib-extensions.h> +#include <gio/gio.h> +#include <glib/gi18n.h> +#include <string.h> + +#include "nautilus-canvas-view.h" +#include "nautilus-enums.h" +#include "nautilus-global-preferences.h" +#include "nautilus-thumbnails.h" + +struct _NautilusCanvasViewContainer +{ + NautilusCanvasContainer parent; + + NautilusCanvasView *view; +}; + +G_DEFINE_TYPE (NautilusCanvasViewContainer, nautilus_canvas_view_container, NAUTILUS_TYPE_CANVAS_CONTAINER); + +static GQuark attribute_none_q; + +static NautilusCanvasView * +get_canvas_view (NautilusCanvasContainer *container) +{ + /* Type unsafe comparison for performance */ + return ((NautilusCanvasViewContainer *) container)->view; +} + +static NautilusIconInfo * +nautilus_canvas_view_container_get_icon_images (NautilusCanvasContainer *container, + NautilusCanvasIconData *data, + int size, + gboolean for_drag_accept) +{ + NautilusCanvasView *canvas_view; + NautilusFile *file; + NautilusFileIconFlags flags; + NautilusIconInfo *icon_info; + gint scale; + + file = (NautilusFile *) data; + + g_assert (NAUTILUS_IS_FILE (file)); + canvas_view = get_canvas_view (container); + g_return_val_if_fail (canvas_view != NULL, NULL); + + flags = NAUTILUS_FILE_ICON_FLAGS_USE_EMBLEMS | + NAUTILUS_FILE_ICON_FLAGS_USE_THUMBNAILS; + + if (for_drag_accept) + { + flags |= NAUTILUS_FILE_ICON_FLAGS_FOR_DRAG_ACCEPT; + } + + scale = gtk_widget_get_scale_factor (GTK_WIDGET (canvas_view)); + icon_info = nautilus_file_get_icon (file, size, scale, flags); + + return icon_info; +} + +static char * +nautilus_canvas_view_container_get_icon_description (NautilusCanvasContainer *container, + NautilusCanvasIconData *data) +{ + NautilusFile *file; + char *mime_type; + const char *description; + + file = NAUTILUS_FILE (data); + g_assert (NAUTILUS_IS_FILE (file)); + + mime_type = nautilus_file_get_mime_type (file); + description = g_content_type_get_description (mime_type); + g_free (mime_type); + return g_strdup (description); +} + +static void +nautilus_canvas_view_container_prioritize_thumbnailing (NautilusCanvasContainer *container, + NautilusCanvasIconData *data) +{ + NautilusFile *file; + char *uri; + + file = (NautilusFile *) data; + + g_assert (NAUTILUS_IS_FILE (file)); + + if (nautilus_file_is_thumbnailing (file)) + { + uri = nautilus_file_get_uri (file); + nautilus_thumbnail_prioritize (uri); + g_free (uri); + } +} + +static GQuark * +get_quark_from_strv (gchar **value) +{ + GQuark *quark; + int i; + + quark = g_new0 (GQuark, g_strv_length (value) + 1); + for (i = 0; value[i] != NULL; ++i) + { + quark[i] = g_quark_from_string (value[i]); + } + + return quark; +} + +/* + * Get the preference for which caption text should appear + * beneath icons. + */ +static GQuark * +nautilus_canvas_view_container_get_icon_text_attributes_from_preferences (void) +{ + GQuark *attributes; + gchar **value; + + value = g_settings_get_strv (nautilus_icon_view_preferences, + NAUTILUS_PREFERENCES_ICON_VIEW_CAPTIONS); + attributes = get_quark_from_strv (value); + g_strfreev (value); + + /* We don't need to sanity check the attributes list even though it came + * from preferences. + * + * There are 2 ways that the values in the list could be bad. + * + * 1) The user picks "bad" values. "bad" values are those that result in + * there being duplicate attributes in the list. + * + * 2) Value stored in GConf are tampered with. Its possible physically do + * this by pulling the rug underneath GConf and manually editing its + * config files. Its also possible to use a third party GConf key + * editor and store garbage for the keys in question. + * + * Thankfully, the Nautilus preferences machinery deals with both of + * these cases. + * + * In the first case, the preferences dialog widgetry prevents + * duplicate attributes by making "bad" choices insensitive. + * + * In the second case, the preferences getter (and also the auto storage) for + * string_array values are always valid members of the enumeration associated + * with the preference. + * + * So, no more error checking on attributes is needed here and we can return + * a the auto stored value. + */ + return attributes; +} + +static int +quarkv_length (GQuark *attributes) +{ + int i; + i = 0; + while (attributes[i] != 0) + { + i++; + } + return i; +} + +/** + * nautilus_canvas_view_get_icon_text_attribute_names: + * + * Get a list representing which text attributes should be displayed + * beneath an icon. The result is dependent on zoom level and possibly + * user configuration. Don't free the result. + * @view: NautilusCanvasView to query. + * + **/ +static GQuark * +nautilus_canvas_view_container_get_icon_text_attribute_names (NautilusCanvasContainer *container, + int *len) +{ + GQuark *attributes; + int piece_count; + + const int pieces_by_level[] = + { + 1, /* NAUTILUS_ZOOM_LEVEL_SMALL */ + 2, /* NAUTILUS_ZOOM_LEVEL_STANDARD */ + 3, /* NAUTILUS_ZOOM_LEVEL_LARGE */ + 3, /* NAUTILUS_ZOOM_LEVEL_LARGER */ + }; + + piece_count = pieces_by_level[nautilus_canvas_container_get_zoom_level (container)]; + + attributes = nautilus_canvas_view_container_get_icon_text_attributes_from_preferences (); + + *len = MIN (piece_count, quarkv_length (attributes)); + + return attributes; +} + +/* This callback returns the text, both the editable part, and the + * part below that is not editable. + */ +static void +nautilus_canvas_view_container_get_icon_text (NautilusCanvasContainer *container, + NautilusCanvasIconData *data, + char **editable_text, + char **additional_text, + gboolean include_invisible) +{ + GQuark *attributes; + char *text_array[4]; + int i, j, num_attributes; + NautilusCanvasView *canvas_view; + NautilusFile *file; + gboolean use_additional; + + file = NAUTILUS_FILE (data); + + g_assert (NAUTILUS_IS_FILE (file)); + g_assert (editable_text != NULL); + canvas_view = get_canvas_view (container); + g_return_if_fail (canvas_view != NULL); + + use_additional = (additional_text != NULL); + + /* Strip the suffix for nautilus object xml files. */ + *editable_text = nautilus_file_get_display_name (file); + + if (!use_additional) + { + return; + } + + /* Find out what attributes go below each icon. */ + attributes = nautilus_canvas_view_container_get_icon_text_attribute_names (container, + &num_attributes); + + /* Get the attributes. */ + j = 0; + for (i = 0; i < num_attributes; ++i) + { + char *text; + if (attributes[i] == attribute_none_q) + { + continue; + } + text = nautilus_file_get_string_attribute_q (file, attributes[i]); + if (text == NULL) + { + continue; + } + text_array[j++] = text; + } + text_array[j] = NULL; + + /* Return them. */ + if (j == 0) + { + *additional_text = NULL; + } + else if (j == 1) + { + /* Only one item, avoid the strdup + free */ + *additional_text = text_array[0]; + } + else + { + *additional_text = g_strjoinv ("\n", text_array); + + for (i = 0; i < j; i++) + { + g_free (text_array[i]); + } + } + + g_free (attributes); +} + +static int +nautilus_canvas_view_container_compare_icons (NautilusCanvasContainer *container, + NautilusCanvasIconData *icon_a, + NautilusCanvasIconData *icon_b) +{ + NautilusCanvasView *canvas_view; + + canvas_view = get_canvas_view (container); + g_return_val_if_fail (canvas_view != NULL, 0); + + /* Type unsafe comparisons for performance */ + return nautilus_canvas_view_compare_files (canvas_view, + (NautilusFile *) icon_a, + (NautilusFile *) icon_b); +} + +static int +nautilus_canvas_view_container_compare_icons_by_name (NautilusCanvasContainer *container, + NautilusCanvasIconData *icon_a, + NautilusCanvasIconData *icon_b) +{ + return nautilus_file_compare_for_sort + (NAUTILUS_FILE (icon_a), + NAUTILUS_FILE (icon_b), + NAUTILUS_FILE_SORT_BY_DISPLAY_NAME, + FALSE, FALSE); +} + +static void +nautilus_canvas_view_container_class_init (NautilusCanvasViewContainerClass *klass) +{ + NautilusCanvasContainerClass *ic_class; + + ic_class = &klass->parent_class; + + attribute_none_q = g_quark_from_static_string ("none"); + + ic_class->get_icon_text = nautilus_canvas_view_container_get_icon_text; + ic_class->get_icon_images = nautilus_canvas_view_container_get_icon_images; + ic_class->get_icon_description = nautilus_canvas_view_container_get_icon_description; + ic_class->prioritize_thumbnailing = nautilus_canvas_view_container_prioritize_thumbnailing; + + ic_class->compare_icons = nautilus_canvas_view_container_compare_icons; + ic_class->compare_icons_by_name = nautilus_canvas_view_container_compare_icons_by_name; +} + +static void +nautilus_canvas_view_container_init (NautilusCanvasViewContainer *canvas_container) +{ + gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (canvas_container)), + GTK_STYLE_CLASS_VIEW); +} + +NautilusCanvasContainer * +nautilus_canvas_view_container_construct (NautilusCanvasViewContainer *canvas_container, + NautilusCanvasView *view) +{ + AtkObject *atk_obj; + + g_return_val_if_fail (NAUTILUS_IS_CANVAS_VIEW (view), NULL); + + canvas_container->view = view; + atk_obj = gtk_widget_get_accessible (GTK_WIDGET (canvas_container)); + atk_object_set_name (atk_obj, _("Icon View")); + + return NAUTILUS_CANVAS_CONTAINER (canvas_container); +} + +NautilusCanvasContainer * +nautilus_canvas_view_container_new (NautilusCanvasView *view) +{ + return nautilus_canvas_view_container_construct + (g_object_new (NAUTILUS_TYPE_CANVAS_VIEW_CONTAINER, NULL), + view); +} |