dupe.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。

	GtkTreeModel *store;
	GtkTreePath *tpath;
	GtkTreeIter iter;
	DupeItem *di = NULL;

	store = gtk_tree_view_get_model(GTK_TREE_VIEW(widget));

	if (gtk_tree_view_get_path_at_pos(GTK_TREE_VIEW(widget), bevent->x, bevent->y,
					  &tpath, NULL, NULL, NULL))
		{
		gtk_tree_model_get_iter(store, &iter, tpath);
		gtk_tree_model_get(store, &iter, DUPE_COLUMN_POINTER, &di, -1);
		gtk_tree_path_free(tpath);
		}

	dw->click_item = di;

	if (bevent->button == 3)
		{
		/* right click menu */
		GtkWidget *menu;

		if (bevent->state & GDK_CONTROL_MASK && bevent->state & GDK_SHIFT_MASK)
			{
			dupe_display_stats(dw, di);
			return TRUE;
			}
		if (widget == dw->listview)
			{
			menu = dupe_menu_popup_main(dw, di);
			}
		else
			{
			menu = dupe_menu_popup_second(dw, di);
			}
		gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, bevent->button, bevent->time);
		}

	if (!di) return FALSE;

	if (bevent->button == 1 && bevent->type == GDK_2BUTTON_PRESS)
		{
		dupe_menu_view(dw, di, widget, FALSE);
		}

	if (bevent->button == 2) return TRUE;

	if (bevent->button == 3)
		{
		if (!dupe_listview_item_is_selected(dw, di, widget))
			{
			GtkTreeSelection *selection;

			selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(widget));
			gtk_tree_selection_unselect_all(selection);
			gtk_tree_selection_select_iter(selection, &iter);

			tpath = gtk_tree_model_get_path(GTK_TREE_MODEL(store), &iter);
			gtk_tree_view_set_cursor(GTK_TREE_VIEW(widget), tpath, NULL, FALSE);
			gtk_tree_path_free(tpath);
			}

		return TRUE;
		}

	if (bevent->button == 1 && bevent->type == GDK_BUTTON_PRESS &&
	    !(bevent->state & GDK_SHIFT_MASK ) &&
	    !(bevent->state & GDK_CONTROL_MASK ) &&
	    dupe_listview_item_is_selected(dw, di, widget))
		{
		/* this selection handled on release_cb */
		gtk_widget_grab_focus(widget);
		return TRUE;
		}

	return FALSE;
}

static gint dupe_listview_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
{
	DupeWindow *dw = data;
	GtkTreeModel *store;
	GtkTreePath *tpath;
	GtkTreeIter iter;
	DupeItem *di = NULL;

	if (bevent->button != 1 && bevent->button != 2) return TRUE;

	store = gtk_tree_view_get_model(GTK_TREE_VIEW(widget));

	if ((bevent->x != 0 || bevent->y != 0) &&
	    gtk_tree_view_get_path_at_pos(GTK_TREE_VIEW(widget), bevent->x, bevent->y,
					  &tpath, NULL, NULL, NULL))
		{
		gtk_tree_model_get_iter(store, &iter, tpath);
		gtk_tree_model_get(store, &iter, DUPE_COLUMN_POINTER, &di, -1);
		gtk_tree_path_free(tpath);
		}

	if (bevent->button == 2)
		{
		if (di && dw->click_item == di)
			{
			GtkTreeSelection *selection;

			selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(widget));
			if (dupe_listview_item_is_selected(dw, di, widget))
				{
				gtk_tree_selection_unselect_iter(selection, &iter);
				}
			else
				{
				gtk_tree_selection_select_iter(selection, &iter);
				}
			}
		return TRUE;
		}

	if (di && dw->click_item == di &&
	    !(bevent->state & GDK_SHIFT_MASK ) &&
	    !(bevent->state & GDK_CONTROL_MASK ) &&
	    dupe_listview_item_is_selected(dw, di, widget))
		{
		GtkTreeSelection *selection;

		selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(widget));
		gtk_tree_selection_unselect_all(selection);
		gtk_tree_selection_select_iter(selection, &iter);

		tpath = gtk_tree_model_get_path(store, &iter);
		gtk_tree_view_set_cursor(GTK_TREE_VIEW(widget), tpath, NULL, FALSE);
		gtk_tree_path_free(tpath);

		return TRUE;
		}

	return FALSE;
}

/*
 *-------------------------------------------------------------------
 * second set stuff
 *-------------------------------------------------------------------
 */

static void dupe_second_update_status(DupeWindow *dw)
{
	gchar *buf;

	buf = g_strdup_printf(_("%d files (set 2)"), g_list_length(dw->second_list));
	gtk_label_set_text(GTK_LABEL(dw->second_status_label), buf);
	g_free(buf);
}

static void dupe_second_add(DupeWindow *dw, DupeItem *di)
{
	GtkListStore *store;
	GtkTreeIter iter;

	if (!di) return;

	di->second = TRUE;
	dw->second_list = g_list_prepend(dw->second_list, di);

	store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(dw->second_listview)));
	gtk_list_store_append(store, &iter);
	gtk_list_store_set(store, &iter, DUPE_COLUMN_POINTER, di, 1, di->path, -1);

	dupe_second_update_status(dw);
}

static void dupe_second_remove(DupeWindow *dw, DupeItem *di)
{
	GtkListStore *store;
	GtkTreeIter iter;

	store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(dw->second_listview)));
	if (dupe_listview_find_item(store, di, &iter) >= 0)
		{
		tree_view_move_cursor_away(GTK_TREE_VIEW(dw->second_listview), &iter, TRUE);
		gtk_list_store_remove(store, &iter);
		}

	dw->second_list = g_list_remove(dw->second_list, di);

	dupe_second_update_status(dw);
}

static void dupe_second_clear(DupeWindow *dw)
{
	GtkListStore *store;

	store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(dw->second_listview)));
	gtk_list_store_clear(store);
	gtk_tree_view_columns_autosize(GTK_TREE_VIEW(dw->second_listview));

	g_list_free(dw->dupes);
	dw->dupes = NULL;

	dupe_list_free(dw->second_list);
	dw->second_list = NULL;

	dupe_match_reset_list(dw->list);

	dupe_second_update_status(dw);
}

static void dupe_second_menu_view_cb(GtkWidget *widget, gpointer data)
{
	DupeWindow *dw = data;

	if (dw->click_item) dupe_menu_view(dw, dw->click_item, dw->second_listview, FALSE);
}

static void dupe_second_menu_viewnew_cb(GtkWidget *widget, gpointer data)
{
	DupeWindow *dw = data;

	if (dw->click_item) dupe_menu_view(dw, dw->click_item, dw->second_listview, TRUE);
}

static void dupe_second_menu_select_all_cb(GtkWidget *widget, gpointer data)
{
	GtkTreeSelection *selection;
	DupeWindow *dw = data;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dw->second_listview));
	gtk_tree_selection_select_all(selection);
}

static void dupe_second_menu_select_none_cb(GtkWidget *widget, gpointer data)
{
	GtkTreeSelection *selection;
	DupeWindow *dw = data;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dw->second_listview));
	gtk_tree_selection_unselect_all(selection);
}

static void dupe_second_menu_remove_cb(GtkWidget *widget, gpointer data)
{
	DupeWindow *dw = data;

	dupe_window_remove_selection(dw, dw->second_listview);
}

static void dupe_second_menu_clear_cb(GtkWidget *widget, gpointer data)
{
	DupeWindow *dw = data;

	dupe_second_clear(dw);
	dupe_window_recompare(dw);
}

static GtkWidget *dupe_menu_popup_second(DupeWindow *dw, DupeItem *di)
{
	GtkWidget *menu;
	gint notempty;
	gint on_row;

	on_row = (di != NULL);
	notempty = (dw->second_list != NULL);

	menu = popup_menu_short_lived();
	menu_item_add_sensitive(menu, _("_View"), on_row,
				G_CALLBACK(dupe_second_menu_view_cb), dw);
	menu_item_add_stock_sensitive(menu, _("View in _new window"), GTK_STOCK_NEW, on_row,
				G_CALLBACK(dupe_second_menu_viewnew_cb), dw);
	menu_item_add_divider(menu);
	menu_item_add_sensitive(menu, _("Select all"), notempty,
				G_CALLBACK(dupe_second_menu_select_all_cb), dw);
	menu_item_add_sensitive(menu, _("Select none"), notempty,
				G_CALLBACK(dupe_second_menu_select_none_cb), dw);
	menu_item_add_divider(menu);
	menu_item_add_stock_sensitive(menu, _("Rem_ove"), GTK_STOCK_REMOVE, on_row,
				      G_CALLBACK(dupe_second_menu_remove_cb), dw);
	menu_item_add_stock_sensitive(menu, _("C_lear"), GTK_STOCK_CLEAR, notempty,
				   G_CALLBACK(dupe_second_menu_clear_cb), dw);
	menu_item_add_divider(menu);
	menu_item_add_stock(menu, _("Close _window"), GTK_STOCK_CLOSE,
			    G_CALLBACK(dupe_menu_close_cb), dw);

	return menu;
}

static void dupe_second_set_toggle_cb(GtkWidget *widget, gpointer data)
{
	DupeWindow *dw = data;

	dw->second_set = GTK_TOGGLE_BUTTON(widget)->active;

	if (dw->second_set)
		{
		dupe_second_update_status(dw);
		gtk_table_set_col_spacings(GTK_TABLE(dw->table), PREF_PAD_GAP);
		gtk_widget_show(dw->second_vbox);
		}
	else
		{
		gtk_table_set_col_spacings(GTK_TABLE(dw->table), 0);
		gtk_widget_hide(dw->second_vbox);
		dupe_second_clear(dw);
		}

	dupe_window_recompare(dw);
}

/*
 *-------------------------------------------------------------------
 * match type menu
 *-------------------------------------------------------------------
 */

enum {
	DUPE_MENU_COLUMN_NAME = 0,
	DUPE_MENU_COLUMN_MASK
};

static void dupe_menu_type_cb(GtkWidget *combo, gpointer data)
{
	DupeWindow *dw = data;
	GtkTreeModel *store;
	GtkTreeIter iter;

	store = gtk_combo_box_get_model(GTK_COMBO_BOX(combo));
	if (!gtk_combo_box_get_active_iter(GTK_COMBO_BOX(combo), &iter)) return;
	gtk_tree_model_get(store, &iter, DUPE_MENU_COLUMN_MASK, &dw->match_mask, -1);

	dupe_window_recompare(dw);
}

static void dupe_menu_add_item(GtkListStore *store, const gchar *text, DupeMatchType type, DupeWindow *dw)
{
	GtkTreeIter iter;

	gtk_list_store_append(store, &iter);
	gtk_list_store_set(store, &iter, DUPE_MENU_COLUMN_NAME, text,
					 DUPE_MENU_COLUMN_MASK, type, -1);

	if (dw->match_mask == type) gtk_combo_box_set_active_iter(GTK_COMBO_BOX(dw->combo), &iter);
}

static void dupe_menu_setup(DupeWindow *dw)
{
	GtkListStore *store;
	GtkCellRenderer *renderer;

	store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_INT);
	dw->combo = gtk_combo_box_new_with_model(GTK_TREE_MODEL(store));
	g_object_unref(store);

	renderer = gtk_cell_renderer_text_new();
	gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(dw->combo), renderer, TRUE);
	gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(dw->combo), renderer,
				       "text", DUPE_MENU_COLUMN_NAME, NULL);

	dupe_menu_add_item(store, _("Name"), DUPE_MATCH_NAME, dw);
	dupe_menu_add_item(store, _("Size"), DUPE_MATCH_SIZE, dw);
	dupe_menu_add_item(store, _("Date"), DUPE_MATCH_DATE, dw);
	dupe_menu_add_item(store, _("Dimensions"), DUPE_MATCH_DIM, dw);
	dupe_menu_add_item(store, _("Checksum"), DUPE_MATCH_SUM, dw);
	dupe_menu_add_item(store, _("Path"), DUPE_MATCH_PATH, dw);
	dupe_menu_add_item(store, _("Similarity (high)"), DUPE_MATCH_SIM_HIGH, dw);
	dupe_menu_add_item(store, _("Similarity"), DUPE_MATCH_SIM_MED, dw);
	dupe_menu_add_item(store, _("Similarity (low)"), DUPE_MATCH_SIM_LOW, dw);
	dupe_menu_add_item(store, _("Similarity (custom)"), DUPE_MATCH_SIM_CUSTOM, dw);

	g_signal_connect(G_OBJECT(dw->combo), "changed",
			 G_CALLBACK(dupe_menu_type_cb), dw);
}

/*
 *-------------------------------------------------------------------
 * list view columns
 *-------------------------------------------------------------------
 */

/* this overrides the low default of a GtkCellRenderer from 100 to CELL_HEIGHT_OVERRIDE, something sane for our purposes */

#define CELL_HEIGHT_OVERRIDE 512
                                                                                                                               
void cell_renderer_height_override(GtkCellRenderer *renderer)
{
	GParamSpec *spec;

	spec = g_object_class_find_property(G_OBJECT_GET_CLASS(G_OBJECT(renderer)), "height");
	if (spec && G_IS_PARAM_SPEC_INT(spec))
		{
		GParamSpecInt *spec_int;

		spec_int = G_PARAM_SPEC_INT(spec);
		if (spec_int->maximum < CELL_HEIGHT_OVERRIDE) spec_int->maximum = CELL_HEIGHT_OVERRIDE;
		}
}

static GdkColor *dupe_listview_color_shifted(GtkWidget *widget)
{
	static GdkColor color;
	static GtkWidget *done = NULL;

	if (done != widget)
		{
		GtkStyle *style;

		style = gtk_widget_get_style(widget);
		memcpy(&color, &style->base[GTK_STATE_NORMAL], sizeof(color));
		shift_color(&color, -1, 0);
		done = widget;
		}

	return &color;
}

static void dupe_listview_color_cb(GtkTreeViewColumn *tree_column, GtkCellRenderer *cell,
				   GtkTreeModel *tree_model, GtkTreeIter *iter, gpointer data)
{
	DupeWindow *dw = data;
	gboolean set;

	gtk_tree_model_get(tree_model, iter, DUPE_COLUMN_COLOR, &set, -1);
	g_object_set(G_OBJECT(cell),
		     "cell-background-gdk", dupe_listview_color_shifted(dw->listview),
		     "cell-background-set", set, NULL);
}

static void dupe_listview_add_column(DupeWindow *dw, GtkWidget *listview, gint n, const gchar *title, gint image, gint right_justify)
{
	GtkTreeViewColumn *column;
	GtkCellRenderer *renderer;

	column = gtk_tree_view_column_new();
	gtk_tree_view_column_set_title(column, title);
	gtk_tree_view_column_set_min_width(column, 4);

	if (n != DUPE_COLUMN_RANK &&
	    n != DUPE_COLUMN_THUMB)
		{
		gtk_tree_view_column_set_resizable(column, TRUE);
		}

	if (!image)
		{
		gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
		renderer = gtk_cell_renderer_text_new();
		if (right_justify)
			{
			g_object_set(G_OBJECT(renderer), "xalign", 1.0, NULL);
			}
		gtk_tree_view_column_pack_start(column, renderer, TRUE);
		gtk_tree_view_column_add_attribute(column, renderer, "text", n);
		}
	else
		{
		gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
		renderer = gtk_cell_renderer_pixbuf_new();
		cell_renderer_height_override(renderer);
		gtk_tree_view_column_pack_start(column, renderer, TRUE);
		gtk_tree_view_column_add_attribute(column, renderer, "pixbuf", n);
		}

	if (listview == dw->listview)
		{
		/* sets background before rendering */
		gtk_tree_view_column_set_cell_data_func(column, renderer, dupe_listview_color_cb, dw, NULL);
		}

	gtk_tree_view_append_column(GTK_TREE_VIEW(listview), column);
}

static void dupe_listview_set_height(GtkWidget *listview, gint thumb)
{
	GtkTreeViewColumn *column;
	GtkCellRenderer *cell;
	GList *list;

	column = gtk_tree_view_get_column(GTK_TREE_VIEW(listview), DUPE_COLUMN_THUMB - 1);
	if (!column) return;

	gtk_tree_view_column_set_fixed_width(column, (thumb) ? thumb_max_width : 4);
	
	list = gtk_tree_view_column_get_cell_renderers(column);
	if (!list) return;
	cell = list->data;
	g_list_free(list);

	g_object_set(G_OBJECT(cell), "height", (thumb) ? thumb_max_height : -1, NULL);
	gtk_tree_view_columns_autosize(GTK_TREE_VIEW(listview));
}


/*
 *-------------------------------------------------------------------
 * misc cb
 *-------------------------------------------------------------------
 */

static void dupe_window_show_thumb_cb(GtkWidget *widget, gpointer data)
{
	DupeWindow *dw = data;

	dw->show_thumbs = GTK_TOGGLE_BUTTON(widget)->active;

	if (dw->show_thumbs)
		{
		if (!dw->working) dupe_thumb_step(dw);
		}
	else
		{
		GtkTreeModel *store;
		GtkTreeIter iter;
		gint valid;

		thumb_loader_free(dw->thumb_loader);
		dw->thumb_loader = NULL;

		store = gtk_tree_view_get_model(GTK_TREE_VIEW(dw->listview));
		valid = gtk_tree_model_get_iter_first(store, &iter);

		while (valid)
			{
			gtk_list_store_set(GTK_LIST_STORE(store), &iter, DUPE_COLUMN_THUMB, NULL, -1);
			valid = gtk_tree_model_iter_next(store, &iter);
			}
		dupe_window_update_progress(dw, NULL, 0.0, FALSE);
		}

	dupe_listview_set_height(dw->listview, dw->show_thumbs);
}

static void dupe_popup_menu_pos_cb(GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer data)
{
	GtkWidget *view = data;
	GtkTreePath *tpath;
	gint cx, cy, cw, ch;
	gint column;

	gtk_tree_view_get_cursor(GTK_TREE_VIEW(view), &tpath, NULL);
	if (!tpath) return;

	if (gtk_tree_view_get_column(GTK_TREE_VIEW(view), DUPE_COLUMN_NAME - 1) != NULL)
		{
		column = DUPE_COLUMN_NAME - 1;
		}
	else
		{
		/* dw->second_listview */
		column = 0;
		}
	tree_view_get_cell_clamped(GTK_TREE_VIEW(view), tpath, column, TRUE, &cx, &cy, &cw, &ch);
	gtk_tree_path_free(tpath);
	cy += ch;
	popup_menu_position_clamp(menu, &cx, &cy, 0);
	*x = cx;
	*y = cy;
}

static gint dupe_window_keypress_cb(GtkWidget *widget