img-view.c

Gqview,Linux下基于GTK+库写成的轻量级而能丰富的图像浏览程序。

	imd = view_window_active_image(vw);
	file_util_copy(image_get_path(imd), NULL, NULL, imd->widget);
}

static void view_move_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;
	ImageWindow *imd;

	imd = view_window_active_image(vw);
	file_util_move(image_get_path(imd), NULL, NULL, imd->widget);
}

static void view_rename_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;
	ImageWindow *imd;

	imd = view_window_active_image(vw);
	file_util_rename(image_get_path(imd), NULL, imd->widget);
}

static void view_delete_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;
	ImageWindow *imd;

	imd = view_window_active_image(vw);
	file_util_delete(image_get_path(imd), NULL, imd->widget);
}

static void view_fullscreen_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;

	view_fullscreen_toggle(vw, FALSE);
}

static void view_slideshow_start_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;

	view_slideshow_start(vw);
}

static void view_slideshow_stop_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;

	view_slideshow_stop(vw);
}

static void view_slideshow_pause_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;

	slideshow_pause_toggle(vw->ss);
}

static void view_close_cb(GtkWidget *widget, gpointer data)
{
	ViewWindow *vw = data;

	view_window_close(vw);
}

static GtkWidget *view_popup_menu(ViewWindow *vw)
{
	GtkWidget *menu;
	GtkWidget *item;

	menu = popup_menu_short_lived();

	menu_item_add_stock(menu, _("Zoom _in"), GTK_STOCK_ZOOM_IN, G_CALLBACK(view_zoom_in_cb), vw);
	menu_item_add_stock(menu, _("Zoom _out"), GTK_STOCK_ZOOM_OUT, G_CALLBACK(view_zoom_out_cb), vw);
	menu_item_add_stock(menu, _("Zoom _1:1"), GTK_STOCK_ZOOM_100, G_CALLBACK(view_zoom_1_1_cb), vw);
	menu_item_add_stock(menu, _("Fit image to _window"), GTK_STOCK_ZOOM_FIT, G_CALLBACK(view_zoom_fit_cb), vw);
	menu_item_add_divider(menu);

	item = submenu_add_edit(menu, NULL, G_CALLBACK(view_edit_cb), vw);
	menu_item_add_divider(item);
	menu_item_add(item, _("Set as _wallpaper"), G_CALLBACK(view_wallpaper_cb), vw);

	submenu_add_alter(menu, G_CALLBACK(view_alter_cb), vw);

	menu_item_add_stock(menu, _("_Properties"), GTK_STOCK_PROPERTIES, G_CALLBACK(view_info_cb), vw);

	menu_item_add_stock(menu, _("View in _new window"), GTK_STOCK_NEW, G_CALLBACK(view_new_window_cb), vw);

	menu_item_add_divider(menu);
	menu_item_add_stock(menu, _("_Copy..."), GTK_STOCK_COPY, G_CALLBACK(view_copy_cb), vw);
	menu_item_add(menu, _("_Move..."), G_CALLBACK(view_move_cb), vw);
	menu_item_add(menu, _("_Rename..."), G_CALLBACK(view_rename_cb), vw);
	menu_item_add_stock(menu, _("_Delete..."), GTK_STOCK_DELETE, G_CALLBACK(view_delete_cb), vw);

	menu_item_add_divider(menu);

	if (vw->ss)
		{
		menu_item_add(menu, _("_Stop slideshow"), G_CALLBACK(view_slideshow_stop_cb), vw);
		if (slideshow_paused(vw->ss))
			{
			item = menu_item_add(menu, _("Continue slides_how"),
					     G_CALLBACK(view_slideshow_pause_cb), vw);
			}
		else
			{
			item = menu_item_add(menu, _("Pause slides_how"),
					     G_CALLBACK(view_slideshow_pause_cb), vw);
			}
		}
	else
		{
		item = menu_item_add(menu, _("_Start slideshow"), G_CALLBACK(view_slideshow_start_cb), vw);
		gtk_widget_set_sensitive(item, (vw->list != NULL) || view_window_contains_collection(vw));
		item = menu_item_add(menu, _("Pause slides_how"), G_CALLBACK(view_slideshow_pause_cb), vw);
		gtk_widget_set_sensitive(item, FALSE);
		}

	if (vw->fs)
		{
		menu_item_add(menu, _("Exit _full screen"), G_CALLBACK(view_fullscreen_cb), vw);
		}
	else
		{
		menu_item_add(menu, _("_Full screen"), G_CALLBACK(view_fullscreen_cb), vw);
		}

	menu_item_add_divider(menu);
	menu_item_add_stock(menu, _("C_lose window"), GTK_STOCK_CLOSE, G_CALLBACK(view_close_cb), vw);

	return menu;
}

/*
 *-------------------------------------------------------------------
 * dnd confirm dir
 *-------------------------------------------------------------------
 */

typedef struct {
	ViewWindow *vw;
	GList *list;
} CViewConfirmD;

static void view_dir_list_cancel(GtkWidget *widget, gpointer data)
{
	/* do nothing */
}

static void view_dir_list_do(ViewWindow *vw, GList *list, gint skip, gint recurse)
{
	GList *work;

	view_window_set_list(vw, NULL);

	work = list;
	while (work)
		{
		gchar *path = work->data;
		work = work->next;

		if (isdir(path))
			{
			if (!skip)
				{
				GList *list = NULL;

				if (recurse)
					{
					list = path_list_recursive(path);
					}
				else
					{
					path_list(path, &list, NULL);
					list = path_list_sort(list);
					list = path_list_filter(list, FALSE);
					}
				if (list) vw->list = g_list_concat(vw->list, list);
				}
			}
		else
			{
			/* FIXME: no filtering here */
			vw->list = g_list_append(vw->list, g_strdup(path));
			}
		}

	if (vw->list)
		{
		gchar *path;

		vw->list_pointer = vw->list;
		path = vw->list->data;
		image_change_path(vw->imd, path, image_zoom_get_default(vw->imd, zoom_mode));

		work = vw->list->next;
		if (enable_read_ahead && work)
			{
			path = work->data;
			image_prebuffer_set(vw->imd, path);
			}
		}
	else
		{
		image_change_path(vw->imd, NULL, image_zoom_get_default(vw->imd, zoom_mode));
		}
}

static void view_dir_list_add(GtkWidget *widget, gpointer data)
{
	CViewConfirmD *d = data;
	view_dir_list_do(d->vw, d->list, FALSE, FALSE);
}

static void view_dir_list_recurse(GtkWidget *widget, gpointer data)
{
	CViewConfirmD *d = data;
	view_dir_list_do(d->vw, d->list, FALSE, TRUE);
}

static void view_dir_list_skip(GtkWidget *widget, gpointer data)
{
	CViewConfirmD *d = data;
	view_dir_list_do(d->vw, d->list, TRUE, FALSE);
}

static void view_dir_list_destroy(GtkWidget *widget, gpointer data)
{
	CViewConfirmD *d = data;
        path_list_free(d->list);
        g_free(d);
}

static GtkWidget *view_confirm_dir_list(ViewWindow *vw, GList *list)
{
	GtkWidget *menu;
	CViewConfirmD *d;

	d = g_new(CViewConfirmD, 1);
	d->vw = vw;
	d->list = list;

	menu = popup_menu_short_lived();
	g_signal_connect(G_OBJECT(menu), "destroy",
			 G_CALLBACK(view_dir_list_destroy), d);

	menu_item_add_stock(menu, _("Dropped list includes folders."), GTK_STOCK_DND_MULTIPLE, NULL, NULL);
	menu_item_add_divider(menu);
	menu_item_add_stock(menu, _("_Add contents"), GTK_STOCK_OK, G_CALLBACK(view_dir_list_add), d);
	menu_item_add_stock(menu, _("Add contents _recursive"), GTK_STOCK_ADD, G_CALLBACK(view_dir_list_recurse), d);
	menu_item_add_stock(menu, _("_Skip folders"), GTK_STOCK_REMOVE, G_CALLBACK(view_dir_list_skip), d);
	menu_item_add_divider(menu);
	menu_item_add_stock(menu, _("Cancel"), GTK_STOCK_CANCEL, G_CALLBACK(view_dir_list_cancel), d);

	return menu;
}

/*
 *-----------------------------------------------------------------------------
 * image drag and drop routines
 *-----------------------------------------------------------------------------
 */

static void view_window_get_dnd_data(GtkWidget *widget, GdkDragContext *context,
				     gint x, gint y,
				     GtkSelectionData *selection_data, guint info,
				     guint time, gpointer data)
{
	ViewWindow *vw = data;
	ImageWindow *imd;

	if (gtk_drag_get_source_widget(context) == vw->imd->pr) return;

	imd = vw->imd;

	if (info == TARGET_URI_LIST || info == TARGET_APP_COLLECTION_MEMBER)
		{
		CollectionData *source;
		GList *list;
		GList *info_list;

		if (info == TARGET_URI_LIST)
			{
			GList *work;

			list = uri_list_from_text(selection_data->data, TRUE);

			work = list;
			while (work)
				{
				if (isdir((gchar *)work->data))
					{
					GtkWidget *menu;
					menu = view_confirm_dir_list(vw, list);
					gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, 0, time);
					return;
					}
				work = work->next;
				}

			list = path_list_filter(list, FALSE);

			source = NULL;
			info_list = NULL;
			}
		else
			{
			source = collection_from_dnd_data((gchar *)selection_data->data, &list, &info_list);
			}

		if (list)
			{
			gchar *path;

			path = list->data;
			if (isfile(path))
				{
				view_slideshow_stop(vw);
				view_window_set_list(vw, NULL);

				if (source && info_list)
					{
					image_change_from_collection(imd, source, info_list->data, image_zoom_get_default(imd, zoom_mode));
					}
				else
					{
					if (list->next)
						{
						vw->list = list;
						list = NULL;

						vw->list_pointer = vw->list;
						}
					image_change_path(imd, path, image_zoom_get_default(imd, zoom_mode));
					}
				}
			}
		path_list_free(list);
		g_list_free(info_list);
		}
}

static void view_window_set_dnd_data(GtkWidget *widget, GdkDragContext *context,
				     GtkSelectionData *selection_data, guint info,
				     guint time, gpointer data)
{
	ViewWindow *vw = data;
	const gchar *path;

	path = image_get_path(vw->imd);

	if (path)
		{
		gchar *text = NULL;
		gint len;
		gint plain_text;
		GList *list;

		switch (info)
			{
			case TARGET_URI_LIST:
				plain_text = FALSE;
				break;
			case TARGET_TEXT_PLAIN:
			default:
				plain_text = TRUE;
				break;
			}
		list = g_list_append(NULL, (gchar *)path);
		text = uri_text_from_list(list, &len, plain_text);
		g_list_free(list);
		if (text)
			{
			gtk_selection_data_set (selection_data, selection_data->target,
						8, text, len);
			g_free(text);
			}
		}
	else
		{
		gtk_selection_data_set (selection_data, selection_data->target,
					8, NULL, 0);
		}
}

static void view_window_dnd_init(ViewWindow *vw)
{
	ImageWindow *imd;

	imd = vw->imd;

	gtk_drag_source_set(imd->pr, GDK_BUTTON2_MASK,
			    dnd_file_drag_types, dnd_file_drag_types_count,
			    GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK);
	g_signal_connect(G_OBJECT(imd->pr), "drag_data_get",
			 G_CALLBACK(view_window_set_dnd_data), vw);

	gtk_drag_dest_set(imd->pr,
			  GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_DROP,
			  dnd_file_drop_types, dnd_file_drop_types_count,
                          GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK);
	g_signal_connect(G_OBJECT(imd->pr), "drag_data_received",
			 G_CALLBACK(view_window_get_dnd_data), vw);
}

/*
 *-----------------------------------------------------------------------------
 * maintenance (for rename, move, remove)
 *-----------------------------------------------------------------------------
 */

static void view_real_removed(ViewWindow *vw, const gchar *path, GList *ignore_list)
{
	ImageWindow *imd;
	const gchar *image_path;

	imd = view_window_active_image(vw);
	image_path = image_get_path(imd);

	if (image_path && strcmp(image_path, path) == 0)
		{
		if (vw->list)
			{
			view_list_step(vw, TRUE);
			if (image_get_path(imd) == image_path)
				{
				view_list_step(vw, FALSE);
				}
			}
		else if (view_window_contains_collection(vw))
			{
			view_collection_step(vw, TRUE);
			if (image_get_path(imd) == image_path)
				{
				view_collection_step(vw, FALSE);
				}
			}
		if (image_get_path(imd) == image_path)
			{
			image_change_path(imd, NULL, image_zoom_get_default(imd, zoom_mode));
			}
		}

	if (vw->list)
		{
		GList *work;
		GList *old;

		old = vw->list_pointer;

		work = vw->list;
		while (work)
			{
			gchar *chk_path;
			GList *chk_link;

			chk_path = work->data;
			chk_link = work;
			work = work->next;

			if (strcmp(chk_path, path) == 0)
				{
				if (vw->list_pointer == chk_link)
					{
					vw->list_pointer = (chk_link->next) ? chk_link->next : chk_link->prev;
					}
				vw->list = g_list_remove(vw->list, chk_path);
				g_free(chk_path);
				}
			}

		/* handles stepping correctly when same image is in the list more than once */
		if (old && old != vw->list_pointer)
			{
			gchar *path;

			if (vw->list_pointer)
				{
				path = vw->list_pointer->data;
				}
			else
				{
				path = NULL;
				}

			image_change_path(imd, path, image_zoom_get_default(imd, zoom_mode));
			}
		}

	if (vw->overlay_id != -1) image_overlay_update(imd, vw->overlay_id);
}

static void view_real_moved(ViewWindow *vw, const gchar *source, const gchar *dest)
{
	ImageWindow *imd;
	const gchar *image_path;

	imd = view_window_active_image(vw);
	image_path = image_get_path(imd);

	if (image_path && strcmp(image_path, source) == 0)
		{
		image_set_path(imd, dest);
		}

	if (vw->list)
		{
		GList *work;
		work = vw->list;
		while (work)
			{
			gchar *chk_path;

			chk_path = work->data;

			if (strcmp(chk_path, source) == 0)
				{
				work->data = g_strdup(dest);
				g_free(chk_path);
				}

			work = work->next;
			}
		}
}

void view_window_maint_removed(const gchar *path, GList *ignore_list)
{
	GList *work = view_window_list;
	while (work)
		{
		ViewWindow *vw = work->data;
		work = work->next;

		view_real_removed(vw, path, ignore_list);
		}
}

void view_window_maint_moved(const gchar *source, const gchar *dest)
{
	GList *work = view_window_list;
	while (work)
		{
		ViewWindow *vw = work->data;
		work = work->next;

		view_real_moved(vw, source, dest);
		}
}