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/*
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)
{
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::on_scroll_event (GdkEventScroll* ev)
{
AutoSpin::scroll_event (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::set_label ()
{
char buf[32];
int width, height;
bool const h = _printer (buf, get_adjustment());
if (!h) {
/* the printer didn't handle it, so use a default */
sprintf (buf, "%.2f", get_adjustment().get_value ());
}
layout->set_text (buf);
layout->get_pixel_size (width, height);
if (twidth < width && (width > 50)) {
/* override GenericPluginUI::build_control_ui()
* Gtkmm2ext::set_size_request_to_display_given_text ("g9999999")
* see http://tracker.ardour.org/view.php?id=6499
*/
set_size_request (std::min (300, width + 6), height + 4);
}
twidth = width; theight = height;
queue_draw ();
}
void
ClickBox::style_changed (const Glib::RefPtr<Gtk::Style>&)
{
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);
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;
}
void
ClickBox::set_printer (sigc::slot<bool, char *, Gtk::Adjustment &> p)
{
_printer = p;
set_label ();
}
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