05fcf75eaf
than a function pointer. git-svn-id: svn://localhost/ardour2/branches/3.0@11743 d708f5d6-7413-0410-9779-e7cbd77b26cf
149 lines
3.6 KiB
C++
149 lines
3.6 KiB
C++
/*
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Copyright (C) 1999 Paul Barton-Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <iostream>
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#include <cstdio> /* for sprintf, sigh ... */
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#include <gtkmm2ext/utils.h>
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#include <gtkmm2ext/click_box.h>
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using namespace std;
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using namespace Gtk;
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using namespace Gtkmm2ext;
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using namespace sigc;
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ClickBox::ClickBox (Gtk::Adjustment *adjp, const string &name, bool round_to_steps)
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: AutoSpin (*adjp,0,round_to_steps)
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{
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layout = create_pango_layout ("");
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twidth = 0;
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theight = 0;
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add_events (Gdk::BUTTON_RELEASE_MASK|
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Gdk::BUTTON_PRESS_MASK|
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Gdk::ENTER_NOTIFY_MASK|
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Gdk::LEAVE_NOTIFY_MASK);
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get_adjustment().signal_value_changed().connect (mem_fun (*this, &ClickBox::set_label));
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signal_style_changed().connect (mem_fun (*this, &ClickBox::style_changed));
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signal_button_press_event().connect (mem_fun (*this, &ClickBox::button_press_handler));
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signal_button_release_event().connect (mem_fun (*this, &ClickBox::button_release_handler));
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set_name (name);
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set_label ();
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}
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ClickBox::~ClickBox ()
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{
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}
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bool
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ClickBox::button_press_handler (GdkEventButton* ev)
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{
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add_modal_grab();
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AutoSpin::button_press (ev);
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return true;
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}
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bool
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ClickBox::button_release_handler (GdkEventButton* ev)
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{
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switch (ev->button) {
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case 1:
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case 2:
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case 3:
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stop_spinning (0);
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default:
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remove_modal_grab();
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break;
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}
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return true;
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}
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void
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ClickBox::set_label ()
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{
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char buf[32];
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bool const h = _printer (buf, get_adjustment());
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if (!h) {
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/* the printer didn't handle it, so use a default */
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sprintf (buf, "%.2f", get_adjustment().get_value ());
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}
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layout->set_text (buf);
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layout->get_pixel_size (twidth, theight);
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queue_draw ();
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}
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void
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ClickBox::style_changed (const Glib::RefPtr<Gtk::Style>&)
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{
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layout->context_changed ();
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layout->get_pixel_size (twidth, theight);
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}
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bool
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ClickBox::on_expose_event (GdkEventExpose *ev)
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{
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/* Why do we do things like this rather than use a Gtk::Label?
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Because whenever Gtk::Label::set_label() is called, it
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triggers a recomputation of its own size, along with that
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of its container and on up the tree. That's intended
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to be unnecessary here.
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*/
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Gtk::DrawingArea::on_expose_event (ev);
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Glib::RefPtr<Gtk::Style> style (get_style());
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Glib::RefPtr<Gdk::GC> fg_gc (style->get_fg_gc (Gtk::STATE_NORMAL));
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Glib::RefPtr<Gdk::GC> bg_gc (style->get_bg_gc (Gtk::STATE_NORMAL));
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Glib::RefPtr<Gdk::Window> win (get_window());
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GdkRectangle base_rect;
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GdkRectangle draw_rect;
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gint x, y, width, height, depth;
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win->get_geometry (x, y, width, height, depth);
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base_rect.width = width;
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base_rect.height = height;
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base_rect.x = 0;
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base_rect.y = 0;
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gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
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win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
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if (twidth && theight) {
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win->draw_layout (fg_gc, (width - twidth) / 2, (height - theight) / 2, layout);
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}
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return true;
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}
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void
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ClickBox::set_printer (sigc::slot<bool, char *, Gtk::Adjustment &> p)
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{
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_printer = p;
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set_label ();
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}
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