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。

{
	if (!layout_valid(&lw)) return -1;

	if (lw->vfl) return vflist_index_by_path(lw->vfl, path);
	if (lw->vfi) return vficon_index_by_path(lw->vfi, path);

	return -1;
}

void layout_list_sync_path(LayoutWindow *lw, const gchar *path)
{
	if (!layout_valid(&lw)) return;

	if (lw->vfl) vflist_select_by_path(lw->vfl, path);
	if (lw->vfi) vficon_select_by_path(lw->vfi, path);
}

static void layout_list_sync_sort(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return;

	if (lw->vfl) vflist_sort_set(lw->vfl, lw->sort_method, lw->sort_ascend);
	if (lw->vfi) vficon_sort_set(lw->vfi, lw->sort_method, lw->sort_ascend);
}

GList *layout_selection_list(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return NULL;

	if (layout_image_get_collection(lw, NULL))
		{
		const gchar *path;

		path = layout_image_get_path(lw);
		if (path) return g_list_append(NULL, g_strdup(path));
		return NULL;
		}

	if (lw->vfl) return vflist_selection_get_list(lw->vfl);
	if (lw->vfi) return vficon_selection_get_list(lw->vfi);

	return NULL;
}

GList *layout_selection_list_by_index(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return NULL;

	if (lw->vfl) return vflist_selection_get_list_by_index(lw->vfl);
	if (lw->vfi) return vficon_selection_get_list_by_index(lw->vfi);

	return NULL;
}

gint layout_selection_count(LayoutWindow *lw, gint64 *bytes)
{
	if (!layout_valid(&lw)) return 0;

	if (lw->vfl) return vflist_selection_count(lw->vfl, bytes);
	if (lw->vfi) return vficon_selection_count(lw->vfi, bytes);

	return 0;
}

void layout_select_all(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return;

	if (lw->vfl) vflist_select_all(lw->vfl);
	if (lw->vfi) vficon_select_all(lw->vfi);
}

void layout_select_none(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return;

	if (lw->vfl) vflist_select_none(lw->vfl);
	if (lw->vfi) vficon_select_none(lw->vfi);
}

/*
 *-----------------------------------------------------------------------------
 * access
 *-----------------------------------------------------------------------------
 */

const gchar *layout_get_path(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return NULL;
	return lw->path;
}

static void layout_sync_path(LayoutWindow *lw)
{
	if (!lw->path) return;

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

	gtk_entry_set_text(GTK_ENTRY(lw->path_entry), lw->path);
	if (lw->vdl) vdlist_set_path(lw->vdl, lw->path);
	if (lw->vdt) vdtree_set_path(lw->vdt, lw->path);

	if (lw->vfl) vflist_set_path(lw->vfl, lw->path);
	if (lw->vfi) vficon_set_path(lw->vfi, lw->path);
}

gint layout_set_path(LayoutWindow *lw, const gchar *path)
{
	gint have_file = FALSE;

	if (!layout_valid(&lw)) return FALSE;

	if (!path || !isname(path)) return FALSE;
	if (lw->path && path && strcmp(path, lw->path) == 0)
		{
		return TRUE;
		}

	if (isdir(path))
		{
		g_free(lw->path);
		lw->path = g_strdup(path);
		}
	else
		{
		gchar *base;

		base = remove_level_from_path(path);
		if (lw->path && strcmp(lw->path, base) == 0)
			{
			g_free(base);
			}
		else if (isdir(base))
			{
			g_free(lw->path);
			lw->path = base;
			}
		else
			{
			g_free(base);
			return FALSE;
			}
		if (isfile(path)) have_file = TRUE;
		}

	if (lw->path_entry) tab_completion_append_to_history(lw->path_entry, lw->path);
	layout_sync_path(lw);

	if (have_file)
		{
		gint row;

		row = layout_list_get_index(lw, path);
		if (row >= 0)
			{
			layout_image_set_index(lw, row);
			}
		else
			{
			layout_image_set_path(lw, path);
			}
		}
	else if (!lazy_image_sync)
		{
		layout_image_set_index(lw, 0);
		}

	return TRUE;
}

static void layout_refresh_lists(LayoutWindow *lw)
{
	if (lw->path) lw->last_time = filetime(lw->path);

	if (lw->vdl) vdlist_refresh(lw->vdl);
	if (lw->vdt) vdtree_refresh(lw->vdt);

	if (lw->vfl) vflist_refresh(lw->vfl);
	if (lw->vfi) vficon_refresh(lw->vfi);
}

static void layout_refresh_by_time(LayoutWindow *lw)
{
	layout_refresh_lists(lw);

	if (lw->image && filetime(layout_image_get_path(lw)) >= lw->last_time)
		{
		layout_image_refresh(lw);
		}
}

void layout_refresh(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return;

	if (debug) printf("layout refresh\n");

	layout_refresh_lists(lw);

	if (lw->image) layout_image_refresh(lw);
}

static gint layout_check_for_update_cb(gpointer data)
{
	LayoutWindow *lw = data;

	if (!update_on_time_change) return TRUE;

	if (lw->path)
		{
		time_t new_time;

		new_time = filetime(lw->path);

		if (new_time > 0 && new_time > lw->last_time)
			{
			if (debug) printf("layout path time changed, refreshing...\n");
			layout_refresh_by_time(lw);
			}
		}

	return TRUE;
}

void layout_thumb_set(LayoutWindow *lw, gint enable)
{
	if (!layout_valid(&lw)) return;

	if (lw->thumbs_enabled == enable) return;

	lw->thumbs_enabled = enable;

	layout_util_sync_thumb(lw);
	layout_list_sync_thumb(lw);
}

gint layout_thumb_get(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return FALSE;

	return lw->thumbs_enabled;
}

void layout_sort_set(LayoutWindow *lw, SortType type, gint ascend)
{
	if (!layout_valid(&lw)) return;
	if (lw->sort_method == type && lw->sort_ascend == ascend) return;

	lw->sort_method = type;
	lw->sort_ascend = ascend;

	if (lw->info_sort) gtk_label_set_text(GTK_LABEL(GTK_BIN(lw->info_sort)->child),
					      sort_type_get_text(type));
	layout_list_sync_sort(lw);
}

gint layout_sort_get(LayoutWindow *lw, SortType *type, gint *ascend)
{
	if (!layout_valid(&lw)) return FALSE;

	if (type) *type = lw->sort_method;
	if (ascend) *ascend = lw->sort_ascend;

	return TRUE;
}

gint layout_geometry_get(LayoutWindow *lw, gint *x, gint *y, gint *w, gint *h)
{
	if (!layout_valid(&lw)) return FALSE;

	gdk_window_get_root_origin(lw->window->window, x, y);
	gdk_drawable_get_size(lw->window->window, w, h);

	return TRUE;
}

gint layout_geometry_get_dividers(LayoutWindow *lw, gint *h, gint *v)
{
	if (!layout_valid(&lw)) return FALSE;

	if (lw->h_pane && GTK_PANED(lw->h_pane)->child1->allocation.x >= 0)
		{
		*h = GTK_PANED(lw->h_pane)->child1->allocation.width;
		}
	else if (h != &lw->div_h)
		{
		*h = lw->div_h;
		}

	if (lw->v_pane && GTK_PANED(lw->v_pane)->child1->allocation.x >= 0)
		{
		*v = GTK_PANED(lw->v_pane)->child1->allocation.height;
		}
	else if (v != &lw->div_v)
		{
		*v = lw->div_v;
		}

	return TRUE;
}

void layout_views_set(LayoutWindow *lw, gint tree, gint icons)
{
	if (!layout_valid(&lw)) return;

	if (lw->tree_view == tree && lw->icon_view == icons) return;

	lw->tree_view = tree;
	lw->icon_view = icons;

	layout_style_set(lw, -1, NULL);
}

gint layout_views_get(LayoutWindow *lw, gint *tree, gint *icons)
{
	if (!layout_valid(&lw)) return FALSE;

	*tree = lw->tree_view;
	*icons = lw->icon_view;

	return TRUE;
}

/*
 *-----------------------------------------------------------------------------
 * location utils
 *-----------------------------------------------------------------------------
 */

static gint layout_location_single(LayoutLocation l)
{
	return (l == LAYOUT_LEFT ||
		l == LAYOUT_RIGHT ||
		l == LAYOUT_TOP ||
		l == LAYOUT_BOTTOM);
}

static gint layout_location_vertical(LayoutLocation l)
{
	return (l & LAYOUT_TOP ||
		l & LAYOUT_BOTTOM);
}

static gint layout_location_first(LayoutLocation l)
{
	return (l & LAYOUT_TOP ||
		l & LAYOUT_LEFT);
}

static LayoutLocation layout_grid_compass(LayoutWindow *lw)
{
	if (layout_location_single(lw->dir_location)) return lw->dir_location;
	if (layout_location_single(lw->file_location)) return lw->file_location;
	return lw->image_location;
}

static void layout_location_compute(LayoutLocation l1, LayoutLocation l2,
				    GtkWidget *s1, GtkWidget *s2,
				    GtkWidget **d1, GtkWidget **d2)
{
	LayoutLocation l;

	l = l1 & l2;	/* get common compass direction */
	l = l1 - l;	/* remove it */

	if (layout_location_first(l))
		{
		*d1 = s1;
		*d2 = s2;
		}
	else
		{
		*d1 = s2;
		*d2 = s1;
		}
}

/*
 *-----------------------------------------------------------------------------
 * tools window (for floating/hidden)
 *-----------------------------------------------------------------------------
 */

gint layout_geometry_get_tools(LayoutWindow *lw, gint *x, gint *y, gint *w, gint *h, gint *divider_pos)
{
	if (!layout_valid(&lw)) return FALSE;

	if (!lw->tools || !GTK_WIDGET_VISIBLE(lw->tools))
		{
		/* use the stored values (sort of breaks success return value) */

		*divider_pos = lw->div_float;

		return FALSE;
		}

	gdk_window_get_root_origin(lw->tools->window, x, y);
	gdk_drawable_get_size(lw->tools->window, w, h);

	if (GTK_IS_VPANED(lw->tools_pane))
		{
		*divider_pos = GTK_PANED(lw->tools_pane)->child1->allocation.height;
		}
	else
		{
		*divider_pos = GTK_PANED(lw->tools_pane)->child1->allocation.width;
		}

	return TRUE;
}

static void layout_tools_geometry_sync(LayoutWindow *lw)
{
	layout_geometry_get_tools(lw, &float_window_x, &float_window_x,
				  &float_window_w, &float_window_h, &lw->div_float);
}

static void layout_tools_hide(LayoutWindow *lw, gint hide)
{
	if (!lw->tools) return;

	if (hide)
		{
		if (GTK_WIDGET_VISIBLE(lw->tools))
			{
			layout_tools_geometry_sync(lw);
			gtk_widget_hide(lw->tools);
			}
		}
	else
		{
		if (!GTK_WIDGET_VISIBLE(lw->tools))
			{
			gtk_widget_show(lw->tools);
			if (lw->vfi) vficon_refresh(lw->vfi);
			}
		}

	lw->tools_hidden = hide;
}

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

	layout_tools_float_toggle(lw);

	return TRUE;
}

static void layout_tools_setup(LayoutWindow *lw, GtkWidget *tools, GtkWidget *files)
{
	GtkWidget *vbox;
	GtkWidget *w1, *w2;
	gint vertical;
	gint new_window = FALSE;

	vertical = (layout_location_single(lw->image_location) && !layout_location_vertical(lw->image_location)) ||
		   (!layout_location_single(lw->image_location) && layout_location_vertical(layout_grid_compass(lw)));
#if 0
	layout_location_compute(lw->dir_location, lw->file_location,
				tools, files, &w1, &w2);
#endif
	/* for now, tools/dir are always first in order */
	w1 = tools;
	w2 = files;

	if (!lw->tools)
		{
		GdkGeometry geometry;
		GdkWindowHints hints;

		lw->tools = gtk_window_new(GTK_WINDOW_TOPLEVEL);
		g_signal_connect(G_OBJECT(lw->tools), "delete_event",
				 G_CALLBACK(layout_tools_delete_cb), lw);
		layout_keyboard_init(lw, lw->tools);

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

		geometry.min_width = 32;
		geometry.min_height = 32;
		geometry.base_width = TOOLWINDOW_DEF_WIDTH;
		geometry.base_height = TOOLWINDOW_DEF_HEIGHT;
		gtk_window_set_geometry_hints(GTK_WINDOW(lw->tools), NULL, &geometry,
					      GDK_HINT_MIN_SIZE | GDK_HINT_BASE_SIZE | hints);


	        gtk_window_set_resizable(GTK_WINDOW(lw->tools), TRUE);
        	gtk_window_set_title(GTK_WINDOW(lw->tools), _("GQview Tools"));
        	gtk_window_set_wmclass(GTK_WINDOW(lw->tools), "tools", "GQview");
        	gtk_container_set_border_width(GTK_CONTAINER(lw->tools), 0);

		window_set_icon(lw->tools, (const gchar **)tools_xpm, NULL);

		new_window = TRUE;
		}
	else
		{
		layout_tools_geometry_sync(lw);
		/* dump the contents */
		gtk_widget_destroy(GTK_BIN(lw->tools)->child);
		}

	layout_actions_add_window(lw, lw->tools);

	vbox = gtk_vbox_new(FALSE, 0);
	gtk_container_add(GTK_CONTAINER(lw->tools), vbox);
	gtk_widget_show(vbox);

	layout_status_setup(lw, vbox, TRUE);

	if (vertical)
		{
		lw->tools_pane = gtk_vpaned_new();
		}
	else
		{
		lw->tools_pane = gtk_hpaned_new();
		}
	gtk_box_pack_start(GTK_BOX(vbox), lw->tools_pane, TRUE, TRUE, 0);
	gtk_widget_show(lw->tools_pane);

	gtk_paned_pack1(GTK_PANED(lw->tools_pane), w1, FALSE, TRUE);
	gtk_paned_pack2(GTK_PANED(lw->tools_pane), w2, TRUE, TRUE);

	gtk_widget_show(tools);
	gtk_widget_show(files);

	if (new_window)
		{
		if (save_window_positions)
			{
			gtk_window_set_default_size(GTK_WINDOW(lw->tools), float_window_w, float_window_h);
			gtk_window_move(GTK_WINDOW(lw->tools), float_window_x, float_window_y);
        	        }
		else
			{
			if (vertical)
				{
				gtk_window_set_default_size(GTK_WINDOW(lw->tools),
							    TOOLWINDOW_DEF_WIDTH, TOOLWINDOW_DEF_HEIGHT);
				}
			else
				{
				gtk_window_set_default_size(GTK_WINDOW(lw->tools),
							    TOOLWINDOW_DEF_HEIGHT, TOOLWINDOW_DEF_WIDTH);
				}
			}
		}

	if (!save_window_positions)
		{
		if (vertical)
			{
			lw->div_float = MAIN_WINDOW_DIV_VPOS;
			}
		else
			{
			lw->div_float = MAIN_WINDOW_DIV_HPOS;
			}
		}

	gtk_paned_set_position(GTK_PANED(lw->tools_pane), lw->div_float);
}

/*
 *-----------------------------------------------------------------------------
 * glue (layout arrangement)
 *-----------------------------------------------------------------------------
 */

static void layout_grid_compute(LayoutWindow *lw,
				GtkWidget *image, GtkWidget *tools, GtkWidget *files,
				GtkWidget **w1, GtkWidget **w2, GtkWidget **w3)
{
	/* heh, this was fun */

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