layout.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。

			*w3 = files;
			layout_location_compute(lw->dir_location, lw->image_location, tools, image, w1, w2);
			}
		}
	else
		{
		/* image */
		if (layout_location_first(lw->image_location))
			{
			*w1 = image;
			layout_location_compute(lw->file_location, lw->dir_location, files, tools, w2, w3);
			}
		else
			{
			*w3 = image;
			layout_location_compute(lw->file_location, lw->dir_location, files, tools, w1, w2);
			}
		}
}

static void layout_grid_setup(LayoutWindow *lw)
{
	gint priority_location;
	GtkWidget *h;
	GtkWidget *v;
	GtkWidget *w1, *w2, *w3;

	GtkWidget *image;
	GtkWidget *tools;
	GtkWidget *files;

	layout_actions_setup(lw);
	layout_actions_add_window(lw, lw->window);

	lw->group_box = gtk_vbox_new(FALSE, 0);
	gtk_box_pack_start(GTK_BOX(lw->main_box), lw->group_box, TRUE, TRUE, 0);
	gtk_widget_show(lw->group_box);

	priority_location = layout_grid_compass(lw);

	image = layout_image_new(lw, NULL);
	tools = layout_tools_new(lw);
	files = layout_list_new(lw);

	image = layout_bars_prepare(lw, image);

	if (lw->tools_float || lw->tools_hidden)
		{
		gtk_box_pack_start(GTK_BOX(lw->group_box), image, TRUE, TRUE, 0);
		gtk_widget_show(image);

		layout_tools_setup(lw, tools, files);

		gtk_widget_grab_focus(lw->image->widget);

		return;
		}
	else if (lw->tools)
		{
		layout_tools_geometry_sync(lw);
		gtk_widget_destroy(lw->tools);
		lw->tools = NULL;
		lw->tools_pane = NULL;
		}

	layout_status_setup(lw, lw->group_box, FALSE);

	layout_grid_compute(lw, image, tools, files, &w1, &w2, &w3);

	v = lw->v_pane = gtk_vpaned_new();

	h = lw->h_pane = gtk_hpaned_new();

	if (!layout_location_vertical(priority_location))
		{
		GtkWidget *tmp;

		tmp = v;
		v = h;
		h = tmp;
		}

	gtk_box_pack_start(GTK_BOX(lw->group_box), v, TRUE, TRUE, 0);

	if (!layout_location_first(priority_location))
		{
		gtk_paned_pack1(GTK_PANED(v), h, FALSE, TRUE);
		gtk_paned_pack2(GTK_PANED(v), w3, TRUE, TRUE);

		gtk_paned_pack1(GTK_PANED(h), w1, FALSE, TRUE);
		gtk_paned_pack2(GTK_PANED(h), w2, TRUE, TRUE);
		}
	else
		{
		gtk_paned_pack1(GTK_PANED(v), w1, FALSE, TRUE);
		gtk_paned_pack2(GTK_PANED(v), h, TRUE, TRUE);

		gtk_paned_pack1(GTK_PANED(h), w2, FALSE, TRUE);
		gtk_paned_pack2(GTK_PANED(h), w3, TRUE, TRUE);
		}

	gtk_widget_show(image);
	gtk_widget_show(tools);
	gtk_widget_show(files);

	gtk_widget_show(v);
	gtk_widget_show(h);

	/* fix to have image pane visible when it is left and priority widget */
	if (lw->div_h == -1 &&
	    w1 == image &&
	    !layout_location_vertical(priority_location) &&
	    layout_location_first(priority_location))
		{
		gtk_widget_set_size_request(image, 200, -1);
		}

	gtk_paned_set_position(GTK_PANED(lw->h_pane), lw->div_h);
	gtk_paned_set_position(GTK_PANED(lw->v_pane), lw->div_v);

	gtk_widget_grab_focus(lw->image->widget);
}

void layout_style_set(LayoutWindow *lw, gint style, const gchar *order)
{
	gchar *path;
	ImageWindow *old_image;

	if (!layout_valid(&lw)) return;

	if (style != -1)
		{
		LayoutLocation d, f, i;

		layout_config_parse(style, order, &d,  &f, &i);

		if (lw->dir_location == d &&
		    lw->file_location == f &&
		    lw->image_location == i) return;

		lw->dir_location = d;
		lw->file_location = f;
		lw->image_location = i;
		}

	/* remember state */

	layout_image_slideshow_stop(lw);
	layout_image_full_screen_stop(lw);

	path = lw->path;
	lw->path = NULL;
	old_image = lw->image;
	lw->image = NULL;
	lw->utility_box = NULL;

	layout_geometry_get_dividers(lw, &lw->div_h, &lw->div_v);

	/* clear it all */

	gtk_widget_hide(old_image->widget);
	gtk_widget_ref(old_image->widget);
	gtk_container_remove(GTK_CONTAINER(old_image->widget->parent), old_image->widget);

	lw->h_pane = NULL;
	lw->v_pane = NULL;

	lw->toolbar = NULL;
	lw->thumb_button = NULL;
	lw->path_entry = NULL;
	lw->dir_view = NULL;
	lw->vdl = NULL;
	lw->vdt = NULL;

	lw->file_view = NULL;
	lw->vfl = NULL;
	lw->vfi = NULL;

	lw->info_box = NULL;
	lw->info_progress_bar = NULL;
	lw->info_sort = NULL;
	lw->info_status = NULL;
	lw->info_details = NULL;
	lw->info_zoom = NULL;

	if (lw->ui_manager) g_object_unref(lw->ui_manager);
	lw->ui_manager = NULL;
	lw->action_group = NULL;

	gtk_container_remove(GTK_CONTAINER(lw->main_box), lw->group_box);
	lw->group_box = NULL;

	/* re-fill */

	layout_grid_setup(lw);
	layout_tools_hide(lw, lw->tools_hidden);

	layout_list_sync_sort(lw);
	layout_util_sync(lw);
	layout_status_update_all(lw);

	/* sync */

	if (image_get_path(old_image))
		{
		layout_set_path(lw, image_get_path(old_image));
		}
	else
		{
		layout_set_path(lw, path);
		}
	image_change_from_image(lw->image, old_image);
	image_top_window_set_sync(lw->image, (lw->tools_float || lw->tools_hidden));

	/* clean up */

	gtk_widget_unref(old_image->widget);
	g_free(path);
}

void layout_styles_update(void)
{
	GList *work;

	work = layout_window_list;
	while (work)
		{
		LayoutWindow *lw = work->data;
		work = work->next;

		layout_style_set(lw, layout_style, layout_order);
		}
}

void layout_colors_update(void)
{
	GList *work;

	work = layout_window_list;
	while (work)
		{
		LayoutWindow *lw = work->data;
		work = work->next;

		if (lw->image) image_background_set_black(lw->image, black_window_background);
		}
}

void layout_tools_float_toggle(LayoutWindow *lw)
{
	gint popped;

	if (!lw) return;

	if (!lw->tools_hidden)
		{
		popped = !lw->tools_float;
		}
	else
		{
		popped = TRUE;
		}

	if (lw->tools_float == popped)
		{
		if (popped && lw->tools_hidden)
			{
			layout_tools_float_set(lw, popped, FALSE);
			}
		}
	else
		{
		if (lw->tools_float)
			{
			layout_tools_float_set(lw, FALSE, FALSE);
			}
		else
			{
			layout_tools_float_set(lw, TRUE, FALSE);
			}
		}
}

void layout_tools_hide_toggle(LayoutWindow *lw)
{
	if (!lw) return;

	layout_tools_float_set(lw, lw->tools_float, !lw->tools_hidden);
}

void layout_tools_float_set(LayoutWindow *lw, gint popped, gint hidden)
{
	if (!layout_valid(&lw)) return;

	if (lw->tools_float == popped && lw->tools_hidden == hidden) return;

	if (lw->tools_float == popped && lw->tools_float && lw->tools)
		{
		layout_tools_hide(lw, hidden);
		return;
		}

	lw->tools_float = popped;
	lw->tools_hidden = hidden;

	layout_style_set(lw, -1, NULL);
}

gint layout_tools_float_get(LayoutWindow *lw, gint *popped, gint *hidden)
{
	if (!layout_valid(&lw)) return FALSE;

	*popped = lw->tools_float;
	*hidden = lw->tools_hidden;

	return TRUE;
}

void layout_toolbar_toggle(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return;
	if (!lw->toolbar) return;

	lw->toolbar_hidden = !lw->toolbar_hidden;

	if (lw->toolbar_hidden)
		{
		if (GTK_WIDGET_VISIBLE(lw->toolbar)) gtk_widget_hide(lw->toolbar);
		}
	else
		{
		if (!GTK_WIDGET_VISIBLE(lw->toolbar)) gtk_widget_show(lw->toolbar);
		}
}

gint layout_toolbar_hidden(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return TRUE;

	return lw->toolbar_hidden;
}

/*
 *-----------------------------------------------------------------------------
 * base
 *-----------------------------------------------------------------------------
 */

void layout_close(LayoutWindow *lw)
{
	if (layout_window_list && layout_window_list->next)
		{
		layout_free(lw);
		}
	else
		{
		exit_gqview();
		}
}

void layout_free(LayoutWindow *lw)
{
	if (!lw) return;

	layout_window_list = g_list_remove(layout_window_list, lw);

	if (lw->last_time_id != -1)
		{
		g_source_remove(lw->last_time_id);
		}

	layout_bars_close(lw);

	gtk_widget_destroy(lw->window);

	g_free(lw->path);

	g_free(lw);
}

static gint layout_delete_cb(GtkWidget *widget, GdkEventAny *event, gpointer data)
{
	LayoutWindow *lw = data;

	layout_close(lw);
	return TRUE;
}

LayoutWindow *layout_new(const gchar *path, gint popped, gint hidden)
{
	LayoutWindow *lw;
	GdkGeometry geometry;
	GdkWindowHints hints;

	lw = g_new0(LayoutWindow, 1);

	lw->thumbs_enabled = thumbnails_enabled;
	lw->sort_method = SORT_NAME;
	lw->sort_ascend = TRUE;

	lw->tools_float = popped;
	lw->tools_hidden = hidden;

	lw->toolbar_hidden = toolbar_hidden;

	lw->utility_box = NULL;
	lw->bar_sort = NULL;
	lw->bar_sort_enabled = FALSE;
	lw->bar_exif = NULL;
	lw->bar_exif_enabled = FALSE;
	lw->bar_exif_size = -1;
	lw->bar_exif_advanced = FALSE;

	lw->full_screen_overlay_id = -1;
	lw->full_screen_overlay_on = FALSE;

	/* default layout */

	layout_config_parse(layout_style, layout_order,
			    &lw->dir_location,  &lw->file_location, &lw->image_location);
	lw->tree_view = layout_view_tree;
	lw->icon_view = layout_view_icons;

	/* divider positions */

	if (save_window_positions)
		{
		lw->div_h = window_hdivider_pos;
		lw->div_v = window_vdivider_pos;
		lw->div_float = float_window_divider;
		}
	else
		{
		lw->div_h = MAIN_WINDOW_DIV_HPOS;
		lw->div_v = MAIN_WINDOW_DIV_VPOS;
		lw->div_float = MAIN_WINDOW_DIV_VPOS;
		}

	/* window */

	lw->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_resizable(GTK_WINDOW(lw->window), TRUE);

	gtk_window_set_title(GTK_WINDOW(lw->window), "GQview");
	gtk_window_set_wmclass(GTK_WINDOW(lw->window), "gqview", "GQview");
	gtk_container_set_border_width(GTK_CONTAINER(lw->window), 0);

	window_set_icon(lw->window, NULL, NULL);

	if (save_window_positions)
		{
		hints = GDK_HINT_USER_POS;
		}
	else
		{
		hints = 0;
		}

	geometry.min_width = 32;
	geometry.min_height = 32;
	geometry.base_width = MAINWINDOW_DEF_WIDTH;
	geometry.base_height = MAINWINDOW_DEF_HEIGHT;
	gtk_window_set_geometry_hints(GTK_WINDOW(lw->window), NULL, &geometry,
				      GDK_HINT_MIN_SIZE | GDK_HINT_BASE_SIZE | hints);

	if (save_window_positions)
		{
		gtk_window_set_default_size(GTK_WINDOW(lw->window), main_window_w, main_window_h);
		if (!layout_window_list)
			{
			gtk_window_move(GTK_WINDOW(lw->window), main_window_x, main_window_y);
			if (main_window_maximized) gtk_window_maximize(GTK_WINDOW(lw->window));
			}
		}
	else
		{
		gtk_window_set_default_size(GTK_WINDOW(lw->window), MAINWINDOW_DEF_WIDTH, MAINWINDOW_DEF_HEIGHT);
		}

	g_signal_connect(G_OBJECT(lw->window), "delete_event",
			 G_CALLBACK(layout_delete_cb), lw);

	layout_keyboard_init(lw, lw->window);

	lw->main_box = gtk_vbox_new(FALSE, 0);
	gtk_container_add(GTK_CONTAINER(lw->window), lw->main_box);
	gtk_widget_show(lw->main_box);

	layout_grid_setup(lw);
	image_top_window_set_sync(lw->image, (lw->tools_float || lw->tools_hidden));

	layout_util_sync(lw);
	layout_status_update_all(lw);

	if (path)
		{
		layout_set_path(lw, path);
		}
	else
		{
		GdkPixbuf *pixbuf;

		pixbuf = pixbuf_inline(PIXBUF_INLINE_LOGO);
		image_change_pixbuf(lw->image, pixbuf, 1.0);
		gdk_pixbuf_unref(pixbuf);
		}

	/* set up the time stat timeout */
	lw->last_time = 0;
	lw->last_time_id = g_timeout_add(5000, layout_check_for_update_cb, lw);

	gtk_widget_show(lw->window);
	layout_tools_hide(lw, lw->tools_hidden);

	layout_window_list = g_list_append(layout_window_list, lw);

	return lw;
}

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

static void layout_real_time_update(LayoutWindow *lw)
{
	/* this resets the last time stamp of path so that a refresh does not occur
	 * from an internal file operation.
	 */

	if (lw->path) lw->last_time = filetime(lw->path);
}

static void layout_real_renamed(LayoutWindow *lw, const gchar *source, const gchar *dest)
{
	gint update = FALSE;

	if (lw->image) layout_image_maint_renamed(lw, source, dest);

	if (lw->vfl) update |= vflist_maint_renamed(lw->vfl, source, dest);
	if (lw->vfi) update |= vficon_maint_renamed(lw->vfi, source, dest);

	if (update) layout_real_time_update(lw);
}

static void layout_real_removed(LayoutWindow *lw, const gchar *path, GList *ignore_list)
{
	gint update = FALSE;

	if (lw->image) layout_image_maint_removed(lw, path);

	if (lw->vfl) update |= vflist_maint_removed(lw->vfl, path, ignore_list);
	if (lw->vfi) update |= vficon_maint_removed(lw->vfi, path, ignore_list);

	if (update) layout_real_time_update(lw);
}

static void layout_real_moved(LayoutWindow *lw, const gchar *source, const gchar *dest, GList *ignore_list)
{
	gint update = FALSE;

	if (lw->image) layout_image_maint_moved(lw, source, dest);

	if (lw->vfl) update |= vflist_maint_moved(lw->vfl, source, dest, ignore_list);
	if (lw->vfi) update |= vficon_maint_moved(lw->vfi, source, dest, ignore_list);

	if (update) layout_real_time_update(lw);
}

void layout_maint_renamed(const gchar *source, const gchar *dest)
{
	GList *work = layout_window_list;
	while (work)
		{
		LayoutWindow *lw = work->data;
		work = work->next;

		layout_real_renamed(lw, source, dest);
		}
}

void layout_maint_removed(const gchar *path, GList *ignore_list)
{
	GList *work = layout_window_list;
	while (work)
		{
		LayoutWindow *lw = work->data;
		work = work->next;

		layout_real_removed(lw, path, ignore_list);
		}
}

void layout_maint_moved(const gchar *source, const gchar *dest, GList *ignore_list)
{
	GList *work = layout_window_list;
	while (work)
		{
		LayoutWindow *lw = work->data;
		work = work->next;

		layout_real_moved(lw, source, dest, ignore_list);
		}
}