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livetrax/libs/widgets/stateful_button.cc

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/*
Copyright (C) 2000-2007 Paul 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 <string>
#include <iostream>
#include <gtkmm/main.h>
#include "widgets/stateful_button.h"
using namespace Gtk;
using namespace Glib;
using namespace ArdourWidgets;
using namespace std;
StateButton::StateButton ()
: visual_state (0)
, _self_managed (false)
, _is_realized (false)
, style_changing (false)
, state_before_prelight (Gtk::STATE_NORMAL)
, is_toggle (false)
{
}
void
StateButton::set_visual_state (int n)
{
if (!_is_realized) {
/* not yet realized */
visual_state = n;
return;
}
if (n == visual_state) {
return;
}
string name = get_widget_name ();
name = name.substr (0, name.find_last_of ('-'));
switch (n) {
case 0:
/* relax */
break;
case 1:
name += "-active";
break;
case 2:
name += "-alternate";
break;
case 3:
name += "-alternate2";
break;
}
set_widget_name (name);
visual_state = n;
}
void
StateButton::avoid_prelight_on_style_changed (const Glib::RefPtr<Gtk::Style>& /* old_style */, GtkWidget* widget)
{
/* don't go into an endless recursive loop if we're changing
the style in response to an existing style change.
*/
if (style_changing) {
return;
}
if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT) {
/* avoid PRELIGHT: make sure that the prelight colors in this new style match
the colors of the new style in whatever state we were in
before we switched to prelight.
*/
GtkRcStyle* rcstyle = gtk_widget_get_modifier_style (widget);
GtkStyle* style = gtk_widget_get_style (widget);
rcstyle->fg[GTK_STATE_PRELIGHT] = style->fg[state_before_prelight];
rcstyle->bg[GTK_STATE_PRELIGHT] = style->bg[state_before_prelight];
rcstyle->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags) (GTK_RC_FG|GTK_RC_BG);
style_changing = true;
g_object_ref (rcstyle);
gtk_widget_modify_style (widget, rcstyle);
Widget* child = get_child_widget();
if (child) {
gtk_widget_modify_style (GTK_WIDGET(child->gobj()), rcstyle);
}
g_object_unref (rcstyle);
style_changing = false;
}
}
void
StateButton::avoid_prelight_on_state_changed (Gtk::StateType old_state, GtkWidget* widget)
{
GtkStateType state = gtk_widget_get_state (widget);
if (state == GTK_STATE_PRELIGHT) {
state_before_prelight = old_state;
/* avoid PRELIGHT when currently ACTIVE:
if we just went into PRELIGHT, make sure that the colors
match those of whatever state we were in before.
*/
GtkRcStyle* rcstyle = gtk_widget_get_modifier_style (widget);
GtkStyle* style = gtk_widget_get_style (widget);
rcstyle->fg[GTK_STATE_PRELIGHT] = style->fg[old_state];
rcstyle->bg[GTK_STATE_PRELIGHT] = style->bg[old_state];
rcstyle->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags) (GTK_RC_FG|GTK_RC_BG);
g_object_ref (rcstyle);
gtk_widget_modify_style (widget, rcstyle);
Widget* child = get_child_widget ();
if (child) {
gtk_widget_modify_style (GTK_WIDGET(child->gobj()), rcstyle);
}
g_object_unref (rcstyle);
}
}
/* ----------------------------------------------------------------- */
StatefulToggleButton::StatefulToggleButton ()
{
is_toggle = true;
}
StatefulToggleButton::StatefulToggleButton (const std::string& label)
: ToggleButton (label)
{
is_toggle = true;
}
void
StatefulToggleButton::on_realize ()
{
ToggleButton::on_realize ();
_is_realized = true;
visual_state++; // to force transition
set_visual_state (visual_state - 1);
}
void
StatefulButton::on_realize ()
{
Button::on_realize ();
_is_realized = true;
visual_state++; // to force transition
set_visual_state (visual_state - 1);
}
void
StatefulToggleButton::on_toggled ()
{
if (!_self_managed) {
if (get_active()) {
set_state (Gtk::STATE_ACTIVE);
} else {
set_state (Gtk::STATE_NORMAL);
}
}
}
void
StatefulToggleButton::on_style_changed (const Glib::RefPtr<Gtk::Style>& style)
{
avoid_prelight_on_style_changed (style, GTK_WIDGET(gobj()));
Button::on_style_changed (style);
}
void
StatefulToggleButton::on_state_changed (Gtk::StateType old_state)
{
avoid_prelight_on_state_changed (old_state, GTK_WIDGET(gobj()));
Button::on_state_changed (old_state);
}
Widget*
StatefulToggleButton::get_child_widget ()
{
return get_child();
}
void
StatefulToggleButton::set_widget_name (const std::string& name)
{
set_name (name);
Widget* w = get_child();
if (w) {
w->set_name (name);
}
}
/*--------------------------------------------- */
StatefulButton::StatefulButton ()
{
}
StatefulButton::StatefulButton (const std::string& label)
: Button (label)
{
}
void
StatefulButton::on_style_changed (const Glib::RefPtr<Gtk::Style>& style)
{
avoid_prelight_on_style_changed (style, GTK_WIDGET(gobj()));
Button::on_style_changed (style);
}
void
StatefulButton::on_state_changed (Gtk::StateType old_state)
{
avoid_prelight_on_state_changed (old_state, GTK_WIDGET(gobj()));
Button::on_state_changed (old_state);
}
Widget*
StatefulButton::get_child_widget ()
{
return get_child();
}
void
StatefulButton::set_widget_name (const std::string& name)
{
set_name (name);
Widget* w = get_child();
if (w) {
w->set_name (name);
}
}