1 files changed, 341 insertions, 0 deletions
diff --git a/libs/widgets/tearoff.cc b/libs/widgets/tearoff.cc
new file mode 100644
index 0000000000..5fae7bcf3b
--- /dev/null
+++ b/libs/widgets/tearoff.cc
@@ -0,0 +1,341 @@
+/*
+    Copyright (C) 2003 Paul Barton-Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <cmath>
+#include <iostream>
+
+#include "pbd/xml++.h"
+
+#include "gtkmm2ext/utils.h"
+
+#include "widgets/tearoff.h"
+
+#include "pbd/i18n.h"
+
+using namespace std;
+using namespace Glib;
+using namespace Gdk;
+using namespace Gtk;
+using namespace ArdourWidgets;
+
+TearOff::TearOff (Widget& c, bool allow_resize)
+	: contents (c)
+	, own_window (Gtk::WINDOW_TOPLEVEL)
+	, tearoff_arrow (ARROW_DOWN, SHADOW_OUT)
+	, close_arrow (ARROW_UP, SHADOW_OUT)
+	, dragging (false)
+	, _visible (true)
+	, _torn (false)
+	, _can_be_torn_off (true)
+
+{
+	own_window_width = 0;
+	own_window_height = 0;
+	own_window_xpos = 0;
+	own_window_ypos = 0;
+
+	tearoff_event_box.add (tearoff_arrow);
+	tearoff_event_box.set_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK);
+	tearoff_event_box.signal_button_release_event().connect (mem_fun (*this, &TearOff::tearoff_click));
+
+	tearoff_event_box.set_tooltip_text (_("Click to tear this into its own window"));
+
+	close_event_box.add (close_arrow);
+	close_event_box.set_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK);
+	close_event_box.signal_button_release_event().connect (mem_fun (*this, &TearOff::close_click));
+
+	close_event_box.set_tooltip_text (_("Click to put this back in the main window"));
+
+	VBox* box1;
+	box1 = manage (new VBox);
+	box1->pack_start (close_event_box, false, false, 2);
+
+	window_box.pack_end (*box1, false, false, 2);
+
+	own_window.add_events (KEY_PRESS_MASK|KEY_RELEASE_MASK|BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|POINTER_MOTION_MASK|POINTER_MOTION_HINT_MASK);
+	own_window.set_resizable (allow_resize);
+	own_window.set_type_hint (WINDOW_TYPE_HINT_UTILITY);
+
+	own_window.add (window_box);
+
+	own_window.signal_button_press_event().connect (mem_fun (*this, &TearOff::window_button_press));
+	own_window.signal_button_release_event().connect (mem_fun (*this, &TearOff::window_button_release));
+	own_window.signal_motion_notify_event().connect (mem_fun (*this, &TearOff::window_motion));
+	own_window.signal_delete_event().connect (mem_fun (*this, &TearOff::window_delete_event));
+	own_window.signal_realize().connect (sigc::mem_fun (*this, &TearOff::own_window_realized));
+	own_window.signal_configure_event().connect (sigc::mem_fun (*this, &TearOff::own_window_configured), false);
+
+	tearoff_arrow.set_name ("TearOffArrow");
+	close_arrow.set_name ("TearOffArrow");
+
+	VBox* box2;
+	box2 = manage (new VBox);
+	box2->pack_start (tearoff_event_box, false, false);
+
+	pack_start (contents);
+	pack_start (*box2, false, false);
+}
+
+TearOff::~TearOff ()
+{
+}
+
+void
+TearOff::set_can_be_torn_off (bool yn)
+{
+	if (yn != _can_be_torn_off) {
+		if (yn) {
+			tearoff_arrow.set_no_show_all (false);
+			tearoff_arrow.show ();
+		} else {
+			tearoff_arrow.set_no_show_all (true);
+			tearoff_arrow.hide ();
+		}
+		_can_be_torn_off = yn;
+	}
+}
+
+void
+TearOff::set_visible (bool yn, bool force)
+{
+	/* don't change visibility if torn off */
+
+	if (_torn) {
+		return;
+	}
+
+	if (_visible != yn || force) {
+		_visible = yn;
+		if (yn) {
+			show_all();
+			Visible ();
+		} else {
+			hide ();
+			Hidden ();
+		}
+	}
+}
+
+gint
+TearOff::tearoff_click (GdkEventButton* /*ev*/)
+{
+	tear_it_off ();
+	return true;
+}
+
+void
+TearOff::tear_it_off ()
+{
+	if (!_can_be_torn_off) {
+		return;
+	}
+
+	if (torn_off()) {
+		return;
+	}
+
+	remove (contents);
+	window_box.pack_start (contents);
+	own_window.set_name (get_name());
+	close_event_box.set_name (get_name());
+	if (own_window_width == 0) {
+		own_window.set_position (WIN_POS_MOUSE);
+	}
+	own_window.show_all ();
+	own_window.present ();
+	hide ();
+
+	_torn = true;
+
+	Detach ();
+}
+
+gint
+TearOff::close_click (GdkEventButton* /*ev*/)
+{
+	put_it_back ();
+	return true;
+}
+
+void
+TearOff::put_it_back ()
+{
+	if (!torn_off()) {
+		return;
+	}
+
+	window_box.remove (contents);
+	pack_start (contents);
+	reorder_child (contents, 0);
+	own_window.hide ();
+	show_all ();
+
+	_torn = false;
+
+	Attach ();
+}
+
+gint
+TearOff::window_button_press (GdkEventButton* ev)
+{
+	if (dragging || ev->button != 1) {
+		dragging = false;
+		own_window.remove_modal_grab();
+		return true;
+	}
+
+	dragging = true;
+	drag_x = ev->x_root;
+	drag_y = ev->y_root;
+
+	own_window.add_modal_grab();
+
+	return true;
+}
+
+gint
+TearOff::window_button_release (GdkEventButton* /*ev*/)
+{
+	dragging = false;
+	own_window.remove_modal_grab();
+	return true;
+}
+
+gint
+TearOff::window_delete_event (GdkEventAny* /*ev*/)
+{
+	return close_click(0);
+}
+
+gint
+TearOff::window_motion (GdkEventMotion* ev)
+{
+	gint x;
+	gint y;
+	gint mx, my;
+	double x_delta;
+	double y_delta;
+	RefPtr<Gdk::Window> win (own_window.get_window());
+
+	own_window.get_pointer (mx, my);
+
+	if (!dragging) {
+		return true;
+	}
+
+	if (!(ev->state & GDK_BUTTON1_MASK)) {
+		dragging = false;
+		own_window.remove_modal_grab();
+		return true;
+	}
+
+	x_delta = ev->x_root - drag_x;
+	y_delta = ev->y_root - drag_y;
+
+	win->get_root_origin (x, y);
+	win->move ((gint) floor (x + x_delta), (gint) floor (y + y_delta));
+
+	drag_x = ev->x_root;
+	drag_y = ev->y_root;
+
+	return true;
+}
+
+bool
+TearOff::torn_off() const
+{
+	return _torn;
+}
+
+void
+TearOff::add_state (XMLNode& node) const
+{
+	node.set_property ("tornoff", _torn);
+
+	if (own_window_width > 0) {
+		node.set_property ("width", own_window_width);
+		node.set_property ("height", own_window_height);
+		node.set_property ("xpos", own_window_xpos);
+		node.set_property ("ypos", own_window_ypos);
+	}
+}
+
+void
+TearOff::set_state (const XMLNode& node)
+{
+	Glib::RefPtr<Gdk::Window> win;
+
+	bool tornoff;
+	if (!node.get_property (X_("tornoff"), tornoff)) {
+		return;
+	}
+
+	if (tornoff) {
+		tear_it_off ();
+	} else {
+		put_it_back ();
+	}
+
+	node.get_property (X_("width"), own_window_width);
+	node.get_property (X_("height"), own_window_height);
+	node.get_property (X_("xpos"), own_window_xpos);
+	node.get_property (X_("ypos"), own_window_ypos);
+
+	if (own_window.is_realized ()) {
+		own_window.set_default_size (own_window_width, own_window_height);
+		own_window.move (own_window_xpos, own_window_ypos);
+	}
+	/* otherwise do it once the window is realized, see below */
+}
+
+void
+TearOff::own_window_realized ()
+{
+	own_window.get_window()->set_decorations (WMDecoration (DECOR_BORDER|DECOR_RESIZEH));
+
+	if (own_window_width > 0) {
+		own_window.set_default_size (own_window_width, own_window_height);
+		own_window.move (own_window_xpos, own_window_ypos);
+	}
+}
+
+bool
+TearOff::own_window_configured (GdkEventConfigure*)
+{
+	Glib::RefPtr<const Gdk::Window> win;
+
+	win = own_window.get_window ();
+
+	if (win) {
+		win->get_size (own_window_width, own_window_height);
+		win->get_position (own_window_xpos, own_window_ypos);
+	}
+
+	return false;
+}
+
+void
+TearOff::hide_visible ()
+{
+	if (torn_off()) {
+		own_window.hide ();
+	}
+
+	hide ();
+}