collect-table.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。

void collection_table_file_update(CollectTable *ct, CollectInfo *info)
{
	GtkTreeIter iter;
	gint row, col;
	gdouble value;

	if (!info)
		{
		collection_table_update_extras(ct, FALSE, 0.0);
		return;
		}

	if (!collection_table_find_position(ct, info, &row, &col)) return;

	if (ct->columns != 0 && ct->rows != 0)
		{
		value = (gdouble)(row * ct->columns + col) / (ct->columns * ct->rows);
		}
	else
		{
		value = 0.0;
		}

	collection_table_update_extras(ct, TRUE, value);

	if (collection_table_find_iter(ct, info, &iter, NULL))
		{
		GtkTreeModel *store;
		GList *list;

		store = gtk_tree_view_get_model(GTK_TREE_VIEW(ct->listview));
		gtk_tree_model_get(store, &iter, CTABLE_COLUMN_POINTER, &list, -1);
		gtk_list_store_set(GTK_LIST_STORE(store), &iter, CTABLE_COLUMN_POINTER, list, -1);
		}
}

void collection_table_file_add(CollectTable *ct, CollectInfo *info)
{
	collection_table_sync_idle(ct);
}

void collection_table_file_insert(CollectTable *ct, CollectInfo *ci)
{
	collection_table_sync_idle(ct);
}

void collection_table_file_remove(CollectTable *ct, CollectInfo *ci)
{
	if (ci && INFO_SELECTED(ci))
		{
		ct->selection = g_list_remove(ct->selection, ci);
		}

	collection_table_sync_idle(ct);
}

void collection_table_refresh(CollectTable *ct)
{
	collection_table_populate(ct, FALSE);
}

/*
 *-------------------------------------------------------------------
 * dnd
 *-------------------------------------------------------------------
 */

static void collection_table_add_dir_recursive(CollectTable *ct, gchar *path, gint recursive)
{
	GList *d = NULL;
	GList *f = NULL;

	if (path_list(path, &f, recursive ? &d : NULL))
		{
		GList *work;

		f = path_list_filter(f, FALSE);
		d = path_list_filter(d, TRUE);

		f = path_list_sort(f);
		d = path_list_sort(d);

		collection_table_insert_path_list(ct, f, ct->marker_info);

		work = g_list_last(d);
		while (work)
			{
			collection_table_add_dir_recursive(ct, (gchar *)work->data, TRUE);
			work = work->prev;
			}
		path_list_free(f);
		path_list_free(d);
		}
}

static void confirm_dir_list_do(CollectTable *ct, GList *list, gint recursive)
{
	GList *work = list;
	while (work)
		{
		gchar *path = work->data;
		work = work->next;
		if (isdir(path)) collection_table_add_dir_recursive(ct, path, recursive);
		}
	collection_table_insert_path_list(ct, list, ct->marker_info);
}


static void confirm_dir_list_add(GtkWidget *widget, gpointer data)
{
	CollectTable *ct = data;

	confirm_dir_list_do(ct, ct->drop_list, FALSE);
}

static void confirm_dir_list_recurse(GtkWidget *widget, gpointer data)
{
	CollectTable *ct = data;

	confirm_dir_list_do(ct, ct->drop_list, TRUE);
}

static void confirm_dir_list_skip(GtkWidget *widget, gpointer data)
{
	CollectTable *ct = data;

	collection_table_insert_path_list(ct, ct->drop_list, ct->marker_info);
}

static GtkWidget *collection_table_drop_menu(CollectTable *ct)
{
	GtkWidget *menu;

	menu = popup_menu_short_lived();
	g_signal_connect(G_OBJECT(menu), "destroy",
			 G_CALLBACK(collection_table_popup_destroy_cb), ct);

	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(confirm_dir_list_add), ct);
	menu_item_add_stock(menu, _("Add contents _recursive"), GTK_STOCK_ADD,
			    G_CALLBACK(confirm_dir_list_recurse), ct);
	menu_item_add_stock(menu, _("_Skip folders"), GTK_STOCK_REMOVE,
			    G_CALLBACK(confirm_dir_list_skip), ct);
	menu_item_add_divider(menu);
	menu_item_add_stock(menu, _("Cancel"), GTK_STOCK_CANCEL, NULL, ct);

	return menu;
}

/*
 *-------------------------------------------------------------------
 * dnd
 *-------------------------------------------------------------------
 */

static GtkTargetEntry collection_drag_types[] = {
	{ "application/x-gqview-collection-member", 0, TARGET_APP_COLLECTION_MEMBER },
	{ "text/uri-list", 0, TARGET_URI_LIST },
	{ "text/plain", 0, TARGET_TEXT_PLAIN }
};
static gint n_collection_drag_types = 3;

static GtkTargetEntry collection_drop_types[] = {
	{ "application/x-gqview-collection-member", 0, TARGET_APP_COLLECTION_MEMBER },
	{ "text/uri-list", 0, TARGET_URI_LIST }
};
static gint n_collection_drop_types = 2;


static void collection_table_dnd_get(GtkWidget *widget, GdkDragContext *context,
				     GtkSelectionData *selection_data, guint info,
				     guint time, gpointer data)
{
	CollectTable *ct = data;
	gint selected;
	GList *list = NULL;
	gchar *uri_text = NULL;
	gint total;

	if (!ct->click_info) return;

	selected = INFO_SELECTED(ct->click_info);
	
	switch (info)
		{
		case TARGET_APP_COLLECTION_MEMBER:
			if (selected)
				{
				uri_text = collection_info_list_to_dnd_data(ct->cd, ct->selection, &total);
				}
			else
				{
				list = g_list_append(NULL, ct->click_info);
				uri_text = collection_info_list_to_dnd_data(ct->cd, list, &total);
				g_list_free(list);
				}
			break;
		case TARGET_URI_LIST:
		case TARGET_TEXT_PLAIN:
		default:
			if (selected)
				{
				list = collection_table_selection_get_list(ct);
				}
			else
				{
				const gchar *path = ct->click_info->path;

				list = g_list_append(NULL, g_strdup(path));
				}
			if (!list) return;

			uri_text = uri_text_from_list(list, &total, (info == TARGET_TEXT_PLAIN));
			path_list_free(list);
			break;
		}

	gtk_selection_data_set(selection_data, selection_data->target,
			       8, uri_text, total);
	g_free(uri_text);
}


static void collection_table_dnd_receive(GtkWidget *widget, GdkDragContext *context,
					  gint x, gint y,
					  GtkSelectionData *selection_data, guint info,
					  guint time, gpointer data)
{
	CollectTable *ct = data;
	GList *list = NULL;
	GList *info_list = NULL;
	CollectionData *source;
	CollectInfo *drop_info;
	GList *work;

	if (debug) printf(selection_data->data);

	collection_table_scroll(ct, FALSE);
	collection_table_insert_marker(ct, NULL, FALSE);

	drop_info = collection_table_insert_point(ct, x, y);

	switch (info)
		{
		case TARGET_APP_COLLECTION_MEMBER:
			source = collection_from_dnd_data((gchar *)selection_data->data, &list, &info_list);
			if (source)
				{
				if (source == ct->cd)
					{
					gint row = -1;
					gint col = -1;

					/* it is a move within a collection */
					path_list_free(list);
					list = NULL;

					if (!drop_info)
						{
						collection_table_move_by_info_list(ct, info_list, -1, -1);
						}
					else if (collection_table_find_position(ct, drop_info, &row, &col))
						{
						collection_table_move_by_info_list(ct, info_list, row, col);
						}
					}
				else
					{
					/* it is a move/copy across collections */
					if (context->action == GDK_ACTION_MOVE)
						{
						collection_remove_by_info_list(source, info_list);
						}
					}
				g_list_free(info_list);
				}
			break;
		case TARGET_URI_LIST:
			list = uri_list_from_text(selection_data->data, TRUE);
			work = list;
			while (work)
				{
				if (isdir((gchar *)work->data))
					{
					GtkWidget *menu;

					ct->drop_list = list;
					ct->drop_info = drop_info;
					menu = collection_table_drop_menu(ct);
					gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, 0, time);
					return;
					}
				work = work->next;
				}
			break;
		default:
			list = NULL;
			break;
		}

	if (list)
		{
		collection_table_insert_path_list(ct, list, drop_info);
		path_list_free(list);
		}
}

static void collection_table_dnd_begin(GtkWidget *widget, GdkDragContext *context, gpointer data)
{
	CollectTable *ct = data;

	if (ct->click_info && ct->click_info->pixbuf)
		{
		gint items;

		if (INFO_SELECTED(ct->click_info))
			items = g_list_length(ct->selection);
		else
			items = 1;
		dnd_set_drag_icon(widget, context, ct->click_info->pixbuf, items);
		}
}

static void collection_table_dnd_end(GtkWidget *widget, GdkDragContext *context, gpointer data)
{
	CollectTable *ct = data;

	/* apparently a leave event is not generated on a drop */
	tip_unschedule(ct);

	collection_table_scroll(ct, FALSE);
}

static gint collection_table_dnd_motion(GtkWidget *widget, GdkDragContext *context,
					gint x, gint y, guint time, gpointer data)
{
	CollectTable *ct = data;

	collection_table_motion_update(ct, x, y, TRUE);
	collection_table_scroll(ct, TRUE);

	return FALSE;
}

static void collection_table_dnd_leave(GtkWidget *widget, GdkDragContext *context, guint time, gpointer data)
{
	CollectTable *ct = data;

	collection_table_scroll(ct, FALSE);
}
 
static void collection_table_dnd_init(CollectTable *ct)
{
	gtk_drag_source_set(ct->listview, GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
			    collection_drag_types, n_collection_drag_types,
			    GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK);
	g_signal_connect(G_OBJECT(ct->listview), "drag_data_get",
			 G_CALLBACK(collection_table_dnd_get), ct);
	g_signal_connect(G_OBJECT(ct->listview), "drag_begin",
			 G_CALLBACK(collection_table_dnd_begin), ct);
	g_signal_connect(G_OBJECT(ct->listview), "drag_end",
			 G_CALLBACK(collection_table_dnd_end), ct);

	gtk_drag_dest_set(ct->listview,
			  GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT | GTK_DEST_DEFAULT_DROP,
			  collection_drop_types, n_collection_drop_types,
			  GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_ASK);
	g_signal_connect(G_OBJECT(ct->listview), "drag_motion",
			 G_CALLBACK(collection_table_dnd_motion), ct);
	g_signal_connect(G_OBJECT(ct->listview), "drag_leave",
			 G_CALLBACK(collection_table_dnd_leave), ct);
	g_signal_connect(G_OBJECT(ct->listview), "drag_data_received",
			 G_CALLBACK(collection_table_dnd_receive), ct);
}

/*
 *-----------------------------------------------------------------------------
 * draw, etc.
 *-----------------------------------------------------------------------------
 */

typedef struct _ColumnData ColumnData;
struct _ColumnData
{
	CollectTable *ct;
	gint number;
};

static void collection_table_cell_data_cb(GtkTreeViewColumn *tree_column, GtkCellRenderer *cell,
					  GtkTreeModel *tree_model, GtkTreeIter *iter, gpointer data)
{
	ColumnData *cd = data;
	CollectTable *ct;
	GtkStyle *style;
	GList *list;
	CollectInfo *info;
	GdkColor color_fg;
	GdkColor color_bg;

	ct = cd->ct;

	gtk_tree_model_get(tree_model, iter, CTABLE_COLUMN_POINTER, &list, -1);
	info = g_list_nth_data(list, cd->number);

	style = gtk_widget_get_style(ct->listview);
	if (info && (info->flag_mask & SELECTION_SELECTED) )
		{
		memcpy(&color_fg, &style->text[GTK_STATE_SELECTED], sizeof(color_fg));
		memcpy(&color_bg, &style->base[GTK_STATE_SELECTED], sizeof(color_bg));
		}
	else
		{
		memcpy(&color_fg, &style->text[GTK_STATE_NORMAL], sizeof(color_fg));
		memcpy(&color_bg, &style->base[GTK_STATE_NORMAL], sizeof(color_bg));
		}

	if (info && (info->flag_mask & SELECTION_PRELIGHT))
		{
#if 0
		shift_color(&color_fg, -1, 0);
#endif
		shift_color(&color_bg, -1, 0);
		}

	if (GQV_IS_CELL_RENDERER_ICON(cell))
		{
		if (info)
			{
			g_object_set(cell,	"pixbuf", info->pixbuf,
						"text", filename_from_path(info->path),
						"cell-background-gdk", &color_bg,
						"cell-background-set", TRUE,
						"foreground-gdk", &color_fg,
						"foreground-set", TRUE,
						"has-focus", (ct->focus_info == info), NULL);
			}
		else
			{
			g_object_set(cell,	"pixbuf", NULL,
						"text", NULL,
						"cell-background-set", FALSE,
						"foreground-set", FALSE,
						"has-focus", FALSE,  NULL);
			}
		}
}

static void collection_table_append_column(CollectTable *ct, gint n)
{
	ColumnData *cd;
	GtkTreeViewColumn *column;
	GtkCellRenderer *renderer;

	column = gtk_tree_view_column_new();
	gtk_tree_view_column_set_min_width(column, 0);

	gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
	gtk_tree_view_column_set_alignment(column, 0.5);

	renderer = gqv_cell_renderer_icon_new();
	gtk_tree_view_column_pack_start(column, renderer, FALSE);
	g_object_set(G_OBJECT(renderer), "xpad", THUMB_BORDER_PADDING * 2,
					 "ypad", THUMB_BORDER_PADDING,
					 "mode", GTK_CELL_RENDERER_MODE_ACTIVATABLE, NULL);

	g_object_set_data(G_OBJECT(column), "column_number", GINT_TO_POINTER(n));

	cd = g_new0(ColumnData, 1);
	cd->ct = ct;
	cd->number = n;
	gtk_tree_view_column_set_cell_data_func(column, renderer, collection_table_cell_data_cb, cd, g_free);

	gtk_tree_view_append_column(GTK_TREE_VIEW(ct->listview), column);
}

/*
 *-------------------------------------------------------------------
 * init, destruction
 *-------------------------------------------------------------------
 */

static void collection_table_destroy(GtkWidget *widget, gpointer data)
{
	CollectTable *ct = data;

	if (ct->popup)
		{
		g_signal_handlers_disconnect_matched(GTK_OBJECT(ct->popup), G_SIGNAL_MATCH_DATA,
						     0, 0, 0, NULL, ct);
		gtk_widget_destroy(ct->popup);
		}

	if (ct->sync_idle_id != -1) g_source_remove(ct->sync_idle_id);

	tip_unschedule(ct);
	collection_table_scroll(ct, FALSE);

	g_free(ct);
}

static void collection_table_sized(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
{
	CollectTable *ct = data;

	collection_table_populate_at_new_size(ct, allocation->width, allocation->height, FALSE);
}

CollectTable *collection_table_new(CollectionData *cd)
{
	CollectTable *ct;
	GtkListStore *store;
	GtkTreeSelection *selection;
	gint i;

	ct = g_new0(CollectTable, 1);
	ct->cd = cd;
	ct->columns = 0;
	ct->rows = 0;

	ct->selection = NULL;
	ct->prev_selection = NULL;

	ct->tip_window = NULL;
	ct->tip_delay_id = -1;

	ct->marker_window = NULL;
	ct->marker_info = NULL;

	ct->status_label = NULL;
	ct->extra_label = NULL;

	ct->focus_row = 0;
	ct->focus_column = 0;
	ct->focus_info = NULL;

	ct->show_text = show_icon_names;

	ct->sync_idle_id = -1;
	ct->drop_idle_id = -1;

	ct->popup = NULL;
	ct->drop_info = NULL;
	ct->drop_list = NULL;

	ct->scrolled = gtk_scrolled_window_new(NULL, NULL);
	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(ct->scrolled), GTK_SHADOW_IN);
	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (ct->scrolled),
					GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);

	store = gtk_list_store_new(1, G_TYPE_POINTER);
	ct->listview = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));
	g_object_unref(store);

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(ct->listview));
	gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_NONE);

	gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(ct->listview), FALSE);
	gtk_tree_view_set_enable_search(GTK_TREE_VIEW(ct->listview), FALSE);

	for (i = 0; i < COLLECT_TABLE_MAX_COLUMNS; i++)
		{
		collection_table_append_column(ct, i);
		}

	/* zero width column to hide tree view focus, we draw it ourselves */
	collection_table_append_column(ct, i);
	/* end column to fill white space */
	collection_table_append_column(ct, i);

	g_signal_connect(G_OBJECT(ct->listview), "destroy",
			 G_CALLBACK(collection_table_destroy), ct);
	g_signal_connect(G_OBJECT(ct->listview), "size_allocate",
			 G_CALLBACK(collection_table_sized), ct);
	g_signal_connect(G_OBJECT(ct->listview), "key_press_event",
			 G_CALLBACK(collection_table_press_key_cb), ct);

	gtk_container_add(GTK_CONTAINER(ct->scrolled), ct->listview);
	gtk_widget_show(ct->listview);

	collection_table_dnd_init(ct);

	gtk_widget_set_events(ct->listview, GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK |
			      GDK_BUTTON_PRESS_MASK | GDK_LEAVE_NOTIFY_MASK);
	g_signal_connect(G_OBJECT(ct->listview),"button_press_event",
			 G_CALLBACK(collection_table_press_cb), ct);
	g_signal_connect(G_OBJECT(ct->listview),"button_release_event",
			 G_CALLBACK(collection_table_release_cb), ct);
	g_signal_connect(G_OBJECT(ct->listview),"motion_notify_event",
			 G_CALLBACK(collection_table_motion_cb), ct);
	g_signal_connect(G_OBJECT(ct->listview), "leave_notify_event",
			 G_CALLBACK(collection_table_leave_cb), ct);

	return ct;
}

void collection_table_set_labels(CollectTable *ct, GtkWidget *status, GtkWidget *extra)
{
	ct->status_label = status;
	ct->extra_label = extra;
	collection_table_update_status(ct);
	collection_table_update_extras(ct, FALSE, 0.0);
}

CollectInfo *collection_table_get_focus_info(CollectTable *ct)
{
	return collection_table_find_data(ct, ct->focus_row, ct->focus_column, NULL);
}