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。

/*
 * GQview
 * (C) 2004 John Ellis
 *
 * Author: John Ellis
 *
 * This software is released under the GNU General Public License (GNU GPL).
 * Please read the included file COPYING for more information.
 * This software comes with no warranty of any kind, use at your own risk!
 */


#include "gqview.h"
#include "collect-table.h"

#include "cellrenderericon.h"
#include "collect-dlg.h"
#include "collect-io.h"
#include "dnd.h"
#include "dupe.h"
#include "editors.h"
#include "filelist.h"
#include "img-view.h"
#include "info.h"
#include "layout.h"
#include "layout_image.h"
#include "menu.h"
#include "print.h"
#include "utilops.h"
#include "ui_bookmark.h"
#include "ui_fileops.h"
#include "ui_menu.h"
#include "ui_tree_edit.h"

#include "icons/marker.xpm"
#define MARKER_WIDTH 26
#define MARKER_HEIGHT 32

#include <gdk/gdkkeysyms.h> /* for keyboard values */

/* between these, the icon width is increased by thumb_max_width / 2 */
#define THUMB_MIN_ICON_WIDTH 128
#define THUMB_MAX_ICON_WIDTH 150

#define COLLECT_TABLE_MAX_COLUMNS 32
#define THUMB_BORDER_PADDING 2

#define COLLECT_TABLE_TIP_DELAY 500


enum {
	CTABLE_COLUMN_POINTER = 0,
	CTABLE_COLUMN_COUNT
};

typedef enum {
	SELECTION_NONE		= 0,
	SELECTION_SELECTED	= 1 << 0,
	SELECTION_PRELIGHT	= 1 << 1,
	SELECTION_FOCUS		= 1 << 2
} SelectionType;


#define INFO_SELECTED(x) (x->flag_mask & SELECTION_SELECTED)


static void collection_table_populate_at_new_size(CollectTable *ct, gint w, gint h, gint force);


/*
 *-------------------------------------------------------------------
 * more misc
 *-------------------------------------------------------------------
 */

static gint collection_table_find_position(CollectTable *ct, CollectInfo *info, gint *row, gint *col)
{
	gint n;

	n = g_list_index(ct->cd->list, info);

	if (n < 0) return FALSE;

	*row = n / ct->columns;
	*col = n - (*row * ct->columns);

	return TRUE;
}

static gint collection_table_find_iter(CollectTable *ct, CollectInfo *info, GtkTreeIter *iter, gint *column)
{
	GtkTreeModel *store;
	gint row, col;

	store = gtk_tree_view_get_model(GTK_TREE_VIEW(ct->listview));
	if (!collection_table_find_position(ct, info, &row, &col)) return FALSE;
	if (!gtk_tree_model_iter_nth_child(store, iter, NULL, row)) return FALSE;
	if (column) *column = col;

	return TRUE;
}

static CollectInfo *collection_table_find_data(CollectTable *ct, gint row, gint col, GtkTreeIter *iter)
{
	GtkTreeModel *store;
	GtkTreeIter p;

	if (row < 0 || col < 0) return NULL;

	store = gtk_tree_view_get_model(GTK_TREE_VIEW(ct->listview));
	if (gtk_tree_model_iter_nth_child(store, &p, NULL, row))
		{
		GList *list;

		gtk_tree_model_get(store, &p, CTABLE_COLUMN_POINTER, &list, -1);
		if (!list) return NULL;

		if (iter) *iter = p;

		return g_list_nth_data(list, col);
		}

	return NULL;
}

static CollectInfo *collection_table_find_data_by_coord(CollectTable *ct, gint x, gint y, GtkTreeIter *iter)
{
	GtkTreePath *tpath;
	GtkTreeViewColumn *column;

	if (gtk_tree_view_get_path_at_pos(GTK_TREE_VIEW(ct->listview), x, y,
					  &tpath, &column, NULL, NULL))
		{
		GtkTreeModel *store;
		GtkTreeIter row;
		GList *list;
		gint n;

		store = gtk_tree_view_get_model(GTK_TREE_VIEW(ct->listview));
		gtk_tree_model_get_iter(store, &row, tpath);
		gtk_tree_path_free(tpath);

		gtk_tree_model_get(store, &row, CTABLE_COLUMN_POINTER, &list, -1);

		n = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(column), "column_number"));
		if (list)
			{
			if (iter) *iter = row;
			return g_list_nth_data(list, n);
			}
		}

	return NULL;
}

static void collection_table_update_status(CollectTable *ct)
{
	if (ct->status_label)
		{
		gchar *buf;

		if (!ct->cd->list)
			{
			buf = g_strdup(_("Empty"));
			}
		else if (ct->selection)
			{
			buf = g_strdup_printf(_("%d images (%d)"), g_list_length(ct->cd->list), g_list_length(ct->selection));
			}
		else
			{
			buf = g_strdup_printf(_("%d images"), g_list_length(ct->cd->list));
			}

		gtk_label_set_text(GTK_LABEL(ct->status_label), buf);
		g_free(buf);
		}
}

static void collection_table_update_extras(CollectTable *ct, gint loading, gdouble value)
{
	if (ct->extra_label)
		{
		gchar *text;
		if (loading)
			text = _("Loading thumbs...");
		else
			text = " ";

		gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ct->extra_label), value);
		gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ct->extra_label), text);
		}
}

static void collection_table_toggle_filenames(CollectTable *ct)
{
	ct->show_text = !ct->show_text;
	show_icon_names = ct->show_text;

	collection_table_populate_at_new_size(ct, ct->listview->allocation.width, ct->listview->allocation.height, TRUE);
}

static gint collection_table_get_icon_width(CollectTable *ct)
{
	gint width;

	if (!ct->show_text) return thumb_max_width;

	width = thumb_max_width + thumb_max_width / 2;
	if (width < THUMB_MIN_ICON_WIDTH) width = THUMB_MIN_ICON_WIDTH;
	if (width > THUMB_MAX_ICON_WIDTH) width = thumb_max_width;

	return width;
}

/*
 *-------------------------------------------------------------------
 * cell updates
 *-------------------------------------------------------------------
 */

static void collection_table_selection_set(CollectTable *ct, CollectInfo *info, SelectionType value, GtkTreeIter *iter)
{
	GtkTreeModel *store;
	GList *list;

	if (!info) return;

	if (info->flag_mask == value) return;
	info->flag_mask = value;

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

		if (collection_table_find_iter(ct, info, &row, NULL))
			{
			gtk_tree_model_get(store, &row, CTABLE_COLUMN_POINTER, &list, -1);
			if (list) gtk_list_store_set(GTK_LIST_STORE(store), &row, CTABLE_COLUMN_POINTER, list, -1);
			}
		}
}

static void collection_table_selection_add(CollectTable *ct, CollectInfo *info, SelectionType mask, GtkTreeIter *iter)
{
	if (!info) return;

	collection_table_selection_set(ct, info, info->flag_mask | mask, iter);
}

static void collection_table_selection_remove(CollectTable *ct, CollectInfo *info, SelectionType mask, GtkTreeIter *iter)
{
	if (!info) return;

	collection_table_selection_set(ct, info, info->flag_mask & ~mask, iter);
}
/*
 *-------------------------------------------------------------------
 * selections
 *-------------------------------------------------------------------
 */

static void collection_table_verify_selections(CollectTable *ct)
{
	GList *work;

	work = ct->selection;
	while (work)
		{
		CollectInfo *info = work->data;
		work = work->next;
		if (!g_list_find(ct->cd->list, info))
			{
			ct->selection = g_list_remove(ct->selection, info);
			}
		}
}

void collection_table_select_all(CollectTable *ct)
{
	GList *work;

	g_list_free(ct->selection);
	ct->selection = NULL;

	work = ct->cd->list;
	while(work)
		{
		ct->selection = g_list_append(ct->selection, work->data);
		collection_table_selection_add(ct, work->data, SELECTION_SELECTED, NULL);
		work = work->next;
		}

	collection_table_update_status(ct);
}

void collection_table_unselect_all(CollectTable *ct)
{
	GList *work;

	work = ct->selection;
	while (work)
		{
		collection_table_selection_remove(ct, work->data, SELECTION_SELECTED, NULL);
		work = work->next;
		}

	g_list_free(ct->selection);
	ct->selection = NULL;

	collection_table_update_status(ct);
}

static void collection_table_select(CollectTable *ct, CollectInfo *info)
{
	ct->prev_selection = info;

	if (!info || INFO_SELECTED(info)) return;

	ct->selection = g_list_append(ct->selection, info);
	collection_table_selection_add(ct, info, SELECTION_SELECTED, NULL);

	collection_table_update_status(ct);
}

static void collection_table_unselect(CollectTable *ct, CollectInfo *info)
{
	ct->prev_selection = info;

	if (!info || !INFO_SELECTED(info) ) return;

	ct->selection = g_list_remove(ct->selection, info);
	collection_table_selection_remove(ct, info, SELECTION_SELECTED, NULL);

	collection_table_update_status(ct);
}

static void collection_table_select_util(CollectTable *ct, CollectInfo *info, gint select)
{
	if (select)
		{
		collection_table_select(ct, info);
		}
	else
		{
		collection_table_unselect(ct, info);
		}
}

static void collection_table_select_region_util(CollectTable *ct, CollectInfo *start, CollectInfo *end, gint select)
{
	gint row1, col1;
	gint row2, col2;
	gint t;
	gint i, j;

	if (!collection_table_find_position(ct, start, &row1, &col1) ||
	    !collection_table_find_position(ct, end, &row2, &col2) ) return;

	ct->prev_selection = end;

	if (!collection_rectangular_selection)
		{
		GList *work;
		CollectInfo *info;

		if (g_list_index(ct->cd->list, start) > g_list_index(ct->cd->list, end))
			{
			info = start;
			start = end;
			end = info;
			}

		work = g_list_find(ct->cd->list, start);
		while (work)
			{
			info = work->data;
			collection_table_select_util(ct, info, select);
			
			if (work->data != end)
				work = work->next;
			else
				work = NULL;
			}
		return;
		}

	if (row2 < row1)
		{
		t = row1;
		row1 = row2;
		row2 = t;
		}
	if (col2 < col1)
		{
		t = col1;
		col1 = col2;
		col2 = t;
		}

	if (debug) printf("table: %d x %d to %d x %d\n", row1, col1, row2, col2);

	for (i = row1; i <= row2; i++)
		{
		for (j = col1; j <= col2; j++)
			{
			CollectInfo *info = collection_table_find_data(ct, i, j, NULL);
			if (info) collection_table_select_util(ct, info, select);
			}
		}
}

GList *collection_table_selection_get_list(CollectTable *ct)
{
	return collection_list_to_path_list(ct->selection);
}

static GList *collection_table_get_list(CollectTable *ct)
{
	return collection_list_to_path_list(ct->cd->list);
}

/*
 *-------------------------------------------------------------------
 * tooltip type window
 *-------------------------------------------------------------------
 */

static void tip_show(CollectTable *ct)
{
	GtkWidget *label;
	gint x, y;

	if (ct->tip_window) return;

	gdk_window_get_pointer(ct->listview->window, &x, &y, NULL);

	ct->tip_info = collection_table_find_data_by_coord(ct, x, y, NULL);
	if (!ct->tip_info) return;

	ct->tip_window = gtk_window_new(GTK_WINDOW_POPUP);
	gtk_window_set_resizable(GTK_WINDOW(ct->tip_window), FALSE);
	gtk_container_set_border_width(GTK_CONTAINER(ct->tip_window), 2);

	label = gtk_label_new(filename_from_path(ct->tip_info->path));

	g_object_set_data(G_OBJECT(ct->tip_window), "tip_label", label);
	gtk_container_add(GTK_CONTAINER(ct->tip_window), label);
	gtk_widget_show(label);

	gdk_window_get_pointer(NULL, &x, &y, NULL);

	if (!GTK_WIDGET_REALIZED(ct->tip_window)) gtk_widget_realize(ct->tip_window);
	gtk_window_move(GTK_WINDOW(ct->tip_window), x + 16, y + 16);
	gtk_widget_show(ct->tip_window);
}

static void tip_hide(CollectTable *ct)
{
	if (ct->tip_window) gtk_widget_destroy(ct->tip_window);
	ct->tip_window = NULL;
}

static gint tip_schedule_cb(gpointer data)
{
	CollectTable *ct = data;

	if (ct->tip_delay_id == -1) return FALSE;

	tip_show(ct);

	ct->tip_delay_id = -1;
	return FALSE;
}

static void tip_schedule(CollectTable *ct)
{
	tip_hide(ct);

	if (ct->tip_delay_id != -1)
		{
		g_source_remove(ct->tip_delay_id);
		ct->tip_delay_id = -1;
		}

	if (!ct->show_text)
		{
		ct->tip_delay_id = g_timeout_add(COLLECT_TABLE_TIP_DELAY, tip_schedule_cb, ct);
		}
}

static void tip_unschedule(CollectTable *ct)
{
	tip_hide(ct);

	if (ct->tip_delay_id != -1) g_source_remove(ct->tip_delay_id);
	ct->tip_delay_id = -1;
}

static void tip_update(CollectTable *ct, CollectInfo *info)
{
	if (ct->tip_window)
		{
		gint x, y;

		gdk_window_get_pointer(NULL, &x, &y, NULL);
		gtk_window_move(GTK_WINDOW(ct->tip_window), x + 16, y + 16);

		if (info != ct->tip_info)
			{
			GtkWidget *label;

			ct->tip_info = info;

			if (!ct->tip_info)
				{
				tip_hide(ct);
				tip_schedule(ct);
				return;
				}

			label = g_object_get_data(G_OBJECT(ct->tip_window), "tip_label");
			gtk_label_set_text(GTK_LABEL(label), filename_from_path(ct->tip_info->path));
			}
		}
	else
		{
		tip_schedule(ct);
		}
}

/*
 *-------------------------------------------------------------------
 * popup menus
 *-------------------------------------------------------------------
 */

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

	collection_dialog_save_as(NULL, ct->cd);
}

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

	if (!ct->cd->path)
		{
		collection_table_popup_save_as_cb(widget, data);
		return;
		}

	if (!collection_save(ct->cd, ct->cd->path))
		{
		printf("failed saving to collection path: %s\n", ct->cd->path);
		}
}

static GList *collection_table_popup_file_list(CollectTable *ct)
{
	if (!ct->click_info) return NULL;

	if (INFO_SELECTED(ct->click_info))
		{
		return collection_table_selection_get_list(ct);
		}

	return g_list_append(NULL, g_strdup(ct->click_info->path));
}

static void collection_table_popup_edit_cb(GtkWidget *widget, gpointer data)
{
	CollectTable *ct;
	gint n;
	GList *list;

	ct = submenu_item_get_data(widget);

	if (!ct) return;
	n = GPOINTER_TO_INT(data);

	list = collection_table_popup_file_list(ct);
	if (list)
		{
		start_editor_from_path_list(n, list);
		path_list_free(list);
		}
}

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

	info_window_new(NULL, collection_table_popup_file_list(ct));
}

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

	file_util_copy(NULL, collection_table_popup_file_list(ct), NULL, ct->listview);
}

static void collection_table_popup_move_cb(GtkWidget *widget, gpointer data)
{