rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 153 insertions, 0 deletions

diff --git a/libs/gtkmm2ext/click_box.cc b/libs/gtkmm2ext/click_box.cc
new file mode 100644
index 0000000000..3ab7ea883c
--- /dev/null
+++ b/libs/gtkmm2ext/click_box.cc
@@ -0,0 +1,153 @@
+/*
+    Copyright (C) 1999 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.
+
+    $Id$
+*/
+
+#include <iostream>
+#include <cstdio> /* for sprintf, sigh ... */
+
+#include <gtkmm2ext/utils.h>
+#include <gtkmm2ext/click_box.h>
+
+using namespace std;
+using namespace Gtk;
+using namespace Gtkmm2ext;
+using namespace sigc;
+
+ClickBox::ClickBox (Gtk::Adjustment *adjp, const string &name, bool round_to_steps)
+	: AutoSpin (*adjp,0,round_to_steps)
+{
+	print_func = default_printer;
+	print_arg = 0;
+	layout = create_pango_layout ("");
+	twidth = 0;
+	theight = 0;
+
+
+	add_events (Gdk::BUTTON_RELEASE_MASK|
+		    Gdk::BUTTON_PRESS_MASK|
+		    Gdk::ENTER_NOTIFY_MASK|
+		    Gdk::LEAVE_NOTIFY_MASK);
+
+	get_adjustment().signal_value_changed().connect (mem_fun (*this, &ClickBox::set_label));
+	signal_style_changed().connect (mem_fun (*this, &ClickBox::style_changed));
+	signal_button_press_event().connect (mem_fun (*this, &ClickBox::button_press_handler));
+	signal_button_release_event().connect (mem_fun (*this, &ClickBox::button_release_handler));
+	set_name (name);
+	set_label ();
+}
+
+ClickBox::~ClickBox ()
+{
+}
+
+bool
+ClickBox::button_press_handler (GdkEventButton* ev)
+{
+	add_modal_grab();
+	AutoSpin::button_press (ev);
+	return true;
+}
+
+bool
+ClickBox::button_release_handler (GdkEventButton* ev)
+{
+	switch (ev->button) {
+	case 1:
+	case 2:
+	case 3:
+		stop_spinning (0);
+	default:
+	        remove_modal_grab();
+		break;
+	}
+	return true;
+}
+
+void
+ClickBox::default_printer (char buf[32], Gtk::Adjustment &adj, 
+			       void *ignored)
+{
+	sprintf (buf, "%.2f", adj.get_value());
+}
+
+void
+ClickBox::set_label ()
+{
+	if (!print_func) {
+		return;
+	}
+
+	char buf[32];
+
+	print_func (buf, get_adjustment(), print_arg);
+
+	layout->set_text (buf);
+	layout->get_pixel_size (twidth, theight);
+
+	queue_draw ();
+}
+
+void
+ClickBox::style_changed (const Glib::RefPtr<Gtk::Style>& ignored)
+{
+
+	layout->context_changed (); 
+	layout->get_pixel_size (twidth, theight);
+}
+
+bool
+ClickBox::on_expose_event (GdkEventExpose *ev)
+{
+	/* Why do we do things like this rather than use a Gtk::Label?
+	   Because whenever Gtk::Label::set_label() is called, it
+	   triggers a recomputation of its own size, along with that
+	   of its container and on up the tree. That's intended
+	   to be unnecessary here.
+	*/
+
+	Gtk::DrawingArea::on_expose_event (ev);
+
+	if (print_func) {
+
+		Glib::RefPtr<Gtk::Style> style (get_style());
+		Glib::RefPtr<Gdk::GC> fg_gc (style->get_fg_gc (Gtk::STATE_NORMAL));
+		Glib::RefPtr<Gdk::GC> bg_gc (style->get_bg_gc (Gtk::STATE_NORMAL));
+		Glib::RefPtr<Gdk::Window> win (get_window());
+		
+		GdkRectangle base_rect;
+		GdkRectangle draw_rect;
+		gint x, y, width, height, depth;
+		
+		win->get_geometry (x, y, width, height, depth);
+		
+		base_rect.width = width;
+		base_rect.height = height;
+		base_rect.x = 0;
+		base_rect.y = 0;
+		
+		gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
+		win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
+
+		if (twidth && theight) {
+		  win->draw_layout (fg_gc, (width - twidth) / 2, (height - theight) / 2, layout);
+		}
+	}
+
+	return true;
+}