ardour/gtk2_ardour/button_joiner.cc

276 lines
7.0 KiB
C++

/*
Copyright (C) 2012 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 <iostream>
#include <algorithm>
#include <gtkmm/toggleaction.h>
#include "pbd/compose.h"
#include "gtkmm2ext/utils.h"
#include "gtkmm2ext/rgb_macros.h"
#include "ardour_ui.h"
#include "button_joiner.h"
using namespace Gtk;
ButtonJoiner::ButtonJoiner (const std::string& str, Gtk::Widget& lw, Gtk::Widget& rw, bool central_joiner)
: left (lw)
, right (rw)
, name (str)
, active_fill_pattern (0)
, inactive_fill_pattern (0)
, central_link (central_joiner)
{
packer.set_homogeneous (true);
if (central_link) {
packer.set_spacing (20);
}
packer.pack_start (left);
packer.pack_start (right);
packer.show ();
/* this alignment is how we position the box that holds the two widgets
within our allocation, and how we request more space around them.
*/
align.add (packer);
if (!central_link) {
align.set (0.5, 1.0);
align.set_padding (9, 0, 9, 9);
} else {
align.set (0.5, 0.5);
align.set_padding (1, 1, 1, 1);
}
align.show ();
add (align);
add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|
Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
uint32_t border_color;
uint32_t r, g, b, a;
border_color = ARDOUR_UI::config()->color (string_compose ("%1: border end", name));
UINT_TO_RGBA (border_color, &r, &g, &b, &a);
border_r = r/255.0;
border_g = g/255.0;
border_b = b/255.0;
/* child cairo widgets need the color of the inner edge as their
* "background"
*/
Gdk::Color col;
col.set_rgb_p (border_r, border_g, border_b);
provide_background_for_cairo_widget (*this, col);
}
ButtonJoiner::~ButtonJoiner ()
{
if (active_fill_pattern) {
cairo_pattern_destroy (active_fill_pattern);
cairo_pattern_destroy (inactive_fill_pattern);
}
}
void
ButtonJoiner::render (cairo_t* cr, cairo_rectangle_t*)
{
double h = get_height();
if (!get_active()) {
cairo_set_source (cr, inactive_fill_pattern);
} else {
cairo_set_source (cr, active_fill_pattern);
}
if (!central_link) {
/* outer rect */
Gtkmm2ext::rounded_top_rectangle (cr, 0, 0, get_width(), h, 8);
cairo_fill_preserve (cr);
/* outer edge */
cairo_set_line_width (cr, 1.5);
cairo_set_source_rgb (cr, border_r, border_g, border_b);
cairo_stroke (cr);
/* inner "edge" */
Gtkmm2ext::rounded_top_rectangle (cr, 8, 8, get_width() - 16, h - 8, 6);
cairo_stroke (cr);
} else {
if (get_active()) {
Gtkmm2ext::rounded_top_rectangle (cr, 0, 0, (get_width() - 20.0)/2.0 , h, 8);
cairo_fill_preserve (cr);
Gtkmm2ext::rounded_top_rectangle (cr, (get_width() - 20.)/2.0 + 20.0, 0.0,
(get_width() - 20.0)/2.0 , h, 8);
cairo_fill_preserve (cr);
cairo_move_to (cr, get_width()/2.0 - 10.0, h/2.0);
cairo_set_line_width (cr, 1.5);
cairo_rel_line_to (cr, 20.0, 0.0);
cairo_set_source (cr, active_fill_pattern);
cairo_stroke (cr);
} else {
cairo_arc (cr, get_width()/2.0, h/2.0, 6.0, 0, M_PI*2.0);
cairo_set_line_width (cr, 1.5);
cairo_fill_preserve (cr);
cairo_set_source_rgb (cr, border_r, border_g, border_b);
cairo_stroke (cr);
}
}
}
void
ButtonJoiner::on_size_allocate (Allocation& alloc)
{
CairoWidget::on_size_allocate (alloc);
set_colors ();
}
bool
ButtonJoiner::on_button_release_event (GdkEventButton*)
{
if (_action) {
_action->activate ();
}
return true;
}
void
ButtonJoiner::on_size_request (Gtk::Requisition* r)
{
CairoWidget::on_size_request (r);
}
void
ButtonJoiner::set_related_action (Glib::RefPtr<Action> act)
{
Gtkmm2ext::Activatable::set_related_action (act);
if (_action) {
action_tooltip_changed ();
Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
if (tact) {
action_toggled ();
tact->signal_toggled().connect (sigc::mem_fun (*this, &ButtonJoiner::action_toggled));
}
_action->connect_property_changed ("sensitive", sigc::mem_fun (*this, &ButtonJoiner::action_sensitivity_changed));
_action->connect_property_changed ("visible", sigc::mem_fun (*this, &ButtonJoiner::action_visibility_changed));
_action->connect_property_changed ("tooltip", sigc::mem_fun (*this, &ButtonJoiner::action_tooltip_changed));
}
}
void
ButtonJoiner::action_sensitivity_changed ()
{
if (_action->property_sensitive ()) {
set_visual_state (Gtkmm2ext::VisualState (visual_state() & ~Gtkmm2ext::Insensitive));
} else {
set_visual_state (Gtkmm2ext::VisualState (visual_state() | Gtkmm2ext::Insensitive));
}
}
void
ButtonJoiner::action_visibility_changed ()
{
if (_action->property_visible ()) {
show ();
} else {
hide ();
}
}
void
ButtonJoiner::action_tooltip_changed ()
{
std::string str = _action->property_tooltip().get_value();
ARDOUR_UI::instance()->set_tip (*this, str);
}
void
ButtonJoiner::action_toggled ()
{
Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
if (tact) {
set_active (tact->get_active());
}
}
void
ButtonJoiner::set_active_state (Gtkmm2ext::ActiveState s)
{
bool changed = (_active_state != s);
CairoWidget::set_active_state (s);
if (changed) {
set_colors ();
}
}
void
ButtonJoiner::set_colors ()
{
uint32_t start_color;
uint32_t end_color;
uint32_t r, g, b, a;
if (active_fill_pattern) {
cairo_pattern_destroy (active_fill_pattern);
cairo_pattern_destroy (inactive_fill_pattern);
}
active_fill_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, get_height());
inactive_fill_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, get_height());
start_color = ARDOUR_UI::config()->color (string_compose ("%1: fill start", name));
end_color = ARDOUR_UI::config()->color (string_compose ("%1: fill end", name));
UINT_TO_RGBA (start_color, &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgba (inactive_fill_pattern, 0, r/255.0,g/255.0,b/255.0, a/255.0);
UINT_TO_RGBA (end_color, &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgba (inactive_fill_pattern, 1, r/255.0,g/255.0,b/255.0, a/255.0);
start_color = ARDOUR_UI::config()->color (string_compose ("%1: fill start active", name));
end_color = ARDOUR_UI::config()->color (string_compose ("%1: fill end active", name));
UINT_TO_RGBA (start_color, &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgba (active_fill_pattern, 0, r/255.0,g/255.0,b/255.0, a/255.0);
UINT_TO_RGBA (end_color, &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgba (active_fill_pattern, 1, r/255.0,g/255.0,b/255.0, a/255.0);
queue_draw ();
}