on BUTTON_PRESS: if it's button 1, store the button x, y, and set

2001-04-09  Chris Toshok  <toshok@ximian.com>

	* gui/widgets/e-minicard.c (e_minicard_event): on BUTTON_PRESS: if
	it's button 1, store the button x, y, and set drag_button_down to
	TRUE.  on BUTTON_RELEASE: always set drag_button_down to FALSE.
	for MOTION_NOTIFY: initiate drag if the pointer has moved 3
	pixels.

	* gui/widgets/e-minicard.h (struct _EMinicard): add fields for
	button x, y, and a bit for if the button has been pressed so we
	can tell whether a motion should be a drag.
	(struct _EMinicardClass): add drag_begin signal.

	* gui/widgets/e-minicard-view.c (e_minicard_view_drag_begin): new
	function, starts the drag.
	(book_view_loaded): connect the "drag_data_get" signal.
	(e_minicard_view_drag_data_get): new function.

	* gui/widgets/e-minicard-view.h (struct _EMinicardView): add
	drag_card and id for canvas_drag_data_get_id.

	* gui/widgets/e-addressbook-view.c (table_drag_data_get): new
	function.
	(create_table_view): add d&d stuff.

svn path=/trunk/; revision=9209

1 files changed, 43 insertions, 0 deletions

diff --git a/addressbook/gui/widgets/e-minicard.c b/addressbook/gui/widgets/e-minicard.c
index 0a05185288..1ca1d12aad 100644
--- a/addressbook/gui/widgets/e-minicard.c
+++ b/addressbook/gui/widgets/e-minicard.c
@@ -22,6 +22,7 @@
 
 #include <config.h>
 #include <glib.h>
+#include <gtk/gtkdnd.h>
 #include <gdk/gdkkeysyms.h>
 #include <libgnome/gnome-defs.h>
 #include <libgnome/gnome-i18n.h>
@@ -54,6 +55,8 @@ static void e_minicard_reflow ( GnomeCanvasItem *item, int flags );
 static void e_minicard_resize_children( EMinicard *e_minicard );
 static void remodel( EMinicard *e_minicard );
 
+static gint e_minicard_drag_begin (EMinicard *minicard, GdkEvent *event);
+
 static GnomeCanvasGroupClass *parent_class = NULL;
 
 typedef struct _EMinicardField EMinicardField;
@@ -85,6 +88,7 @@ enum {
 
 enum {
 	SELECTED,
+	DRAG_BEGIN,
 	LAST_SIGNAL
 };
 
@@ -147,6 +151,14 @@ e_minicard_class_init (EMinicardClass *klass)
 				gtk_marshal_INT__POINTER,
 				GTK_TYPE_INT, 1, GTK_TYPE_POINTER);
 
+	e_minicard_signals [DRAG_BEGIN] =
+		gtk_signal_new ("drag_begin",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (EMinicardClass, drag_begin),
+				gtk_marshal_INT__POINTER,
+				GTK_TYPE_INT, 1, GTK_TYPE_POINTER);
+
 	gtk_object_class_add_signals (object_class, e_minicard_signals, LAST_SIGNAL);
  
 	object_class->set_arg  = e_minicard_set_arg;
@@ -647,6 +659,9 @@ e_minicard_event (GnomeCanvasItem *item, GdkEvent *event)
 		if (event->button.button == 1) {
 			int ret_val = e_minicard_selected(e_minicard, event);
 			e_canvas_item_grab_focus(item, TRUE);
+			e_minicard->button_x = event->button.x;
+			e_minicard->button_y = event->button.y;
+			e_minicard->drag_button_down = TRUE;
 			return ret_val;
 		} else if (event->button.button == 3) {
 			MinicardAndParent *mnp = g_new(MinicardAndParent, 1);
@@ -666,7 +681,25 @@ e_minicard_event (GnomeCanvasItem *item, GdkEvent *event)
 			e_popup_menu_run (menu, event, 0, E_IS_MINICARD_VIEW(mnp->parent) ? 0 : 1, mnp);
 		}
 		break;
+	case GDK_BUTTON_RELEASE:
+		e_minicard->drag_button_down = FALSE;
+		break;
+	case GDK_MOTION_NOTIFY:
+		/* shamelessly ripped from e-table.c, complete with
+                   broken stuck-grab behavior */
+		if (e_minicard->drag_button_down && event->motion.state & GDK_BUTTON1_MASK) {
+			if (MAX (abs (e_minicard->button_x - event->motion.x),
+				 abs (e_minicard->button_y - event->motion.y)) > 3) {
+				gint ret_val = e_minicard_drag_begin(e_minicard, event);
+
+				printf ("signalled drag begin\n");
+
+				e_minicard->drag_button_down = FALSE;
 
+				return ret_val;
+			}
+		}
+		break;
 	case GDK_2BUTTON_PRESS:
 		if (event->button.button == 1 && E_IS_MINICARD_VIEW(item->parent)) {
 			if (e_minicard->editor) {
@@ -989,3 +1022,13 @@ e_minicard_selected (EMinicard *minicard, GdkEvent *event)
 			event, &ret_val);
 	return ret_val;
 }
+
+static gint
+e_minicard_drag_begin (EMinicard *minicard, GdkEvent *event)
+{
+	gint ret_val = 0;
+	gtk_signal_emit (GTK_OBJECT(minicard),
+			 e_minicard_signals[DRAG_BEGIN],
+			 event, &ret_val);
+	return ret_val;
+}