git-svn-id: svn://localhost/ardour2/branches/3.0@10338 d708f5d6-7413-0410-9779-e7cbd77b26cf
518 lines
13 KiB
C++
518 lines
13 KiB
C++
/*
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Copyright (C) 2010 Paul 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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*/
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#include <iostream>
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#include <cmath>
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#include <algorithm>
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#include <pangomm/layout.h>
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#include "pbd/compose.h"
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#include "pbd/error.h"
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#include "gtkmm2ext/utils.h"
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#include "gtkmm2ext/rgb_macros.h"
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#include "gtkmm2ext/gui_thread.h"
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#include "ardour_button.h"
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#include "ardour_ui.h"
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#include "global_signals.h"
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#include "i18n.h"
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using namespace Gdk;
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using namespace Gtk;
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using namespace Glib;
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using namespace PBD;
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using std::max;
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using std::min;
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using namespace std;
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ArdourButton::Element ArdourButton::default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Text);
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ArdourButton::Element ArdourButton::led_default_elements = ArdourButton::Element (ArdourButton::default_elements|ArdourButton::Indicator);
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ArdourButton::Element ArdourButton::just_led_default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Indicator);
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ArdourButton::ArdourButton (Element e)
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: _elements (e)
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, _act_on_release (true)
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, _text_width (0)
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, _text_height (0)
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, _diameter (11.0)
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, _corner_radius (9.0)
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, edge_pattern (0)
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, fill_pattern (0)
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, led_inset_pattern (0)
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, reflection_pattern (0)
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, _led_left (false)
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, _fixed_diameter (true)
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, _distinct_led_click (false)
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{
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ColorsChanged.connect (sigc::mem_fun (*this, &ArdourButton::color_handler));
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StateChanged.connect (sigc::mem_fun (*this, &ArdourButton::state_handler));
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}
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ArdourButton::~ArdourButton()
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{
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}
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void
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ArdourButton::set_text (const std::string& str)
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{
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_text = str;
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if (!_layout && !_text.empty()) {
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_layout = Pango::Layout::create (get_pango_context());
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}
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_layout->set_text (str);
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queue_resize ();
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}
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void
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ArdourButton::set_markup (const std::string& str)
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{
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_text = str;
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if (!_layout) {
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_layout = Pango::Layout::create (get_pango_context());
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}
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_layout->set_text (str);
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queue_resize ();
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}
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void
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ArdourButton::render (cairo_t* cr)
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{
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if (!_fixed_diameter) {
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_diameter = std::min (_width, _height);
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}
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/* background fill. use parent window style, so that we fit in nicely.
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*/
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Color c = get_parent_bg ();
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cairo_rectangle (cr, 0, 0, _width, _height);
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cairo_stroke_preserve (cr);
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cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
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cairo_fill (cr);
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if (_elements & Edge) {
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Gtkmm2ext::rounded_rectangle (cr, 0, 0, _width, _height, _corner_radius);
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cairo_set_source (cr, edge_pattern);
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cairo_fill (cr);
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}
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if (_elements & Body) {
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if (_elements & Edge) {
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Gtkmm2ext::rounded_rectangle (cr, 1, 1, _width-2, _height-2, _corner_radius - 1.0);
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} else {
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Gtkmm2ext::rounded_rectangle (cr, 0, 0, _width, _height, _corner_radius - 1.0);
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}
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cairo_set_source (cr, fill_pattern);
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cairo_fill (cr);
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}
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/* text, if any */
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if ((_elements & Text) && !_text.empty()) {
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cairo_set_source_rgba (cr, text_r, text_g, text_b, text_a);
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if (_elements & Indicator) {
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if (_led_left) {
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cairo_move_to (cr, _diameter + 3 + 4, _height/2.0 - _text_height/2.0);
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} else {
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cairo_move_to (cr, 3, _height/2.0 - _text_height/2.0);
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}
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} else {
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/* center text */
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cairo_move_to (cr, (_width - _text_width)/2.0, _height/2.0 - _text_height/2.0);
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}
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pango_cairo_show_layout (cr, _layout->gobj());
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}
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if (_elements & Indicator) {
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/* move to the center of the indicator/led */
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cairo_save (cr);
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if (_elements & Text) {
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if (_led_left) {
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cairo_translate (cr, 3 + (_diameter/2.0), _height/2.0);
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} else {
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cairo_translate (cr, _width - ((_diameter/2.0) + 4.0), _height/2.0);
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}
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} else {
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cairo_translate (cr, _width/2.0, _height/2.0);
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}
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//inset
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cairo_arc (cr, 0, 0, _diameter/2, 0, 2 * M_PI);
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cairo_set_source (cr, led_inset_pattern);
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cairo_fill (cr);
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//black ring
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_arc (cr, 0, 0, _diameter/2-2, 0, 2 * M_PI);
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cairo_fill(cr);
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//led color
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cairo_set_source_rgba (cr, led_r, led_g, led_b, led_a);
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cairo_arc (cr, 0, 0, _diameter/2-3, 0, 2 * M_PI);
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cairo_fill(cr);
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//reflection
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cairo_scale(cr, 0.7, 0.7);
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cairo_arc (cr, 0, 0, _diameter/2-3, 0, 2 * M_PI);
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cairo_set_source (cr, reflection_pattern);
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cairo_fill (cr);
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cairo_restore (cr);
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}
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/* a partially transparent gray layer to indicate insensitivity */
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if ((visual_state() & Insensitive)) {
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cairo_rectangle (cr, 0, 0, _width, _height);
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cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.5);
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cairo_fill (cr);
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}
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}
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void
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ArdourButton::state_handler ()
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{
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set_colors ();
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}
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void
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ArdourButton::set_diameter (float d)
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{
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_diameter = (d*2) + 5.0;
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if (_diameter != 0.0) {
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_fixed_diameter = true;
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}
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set_colors ();
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}
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void
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ArdourButton::set_corner_radius (float r)
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{
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_corner_radius = r;
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set_dirty ();
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}
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void
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ArdourButton::on_size_request (Gtk::Requisition* req)
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{
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int xpad = 0;
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int ypad = 6;
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CairoWidget::on_size_request (req);
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if ((_elements & Text) && !_text.empty()) {
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_layout->get_pixel_size (_text_width, _text_height);
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xpad += 6;
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} else {
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_text_width = 0;
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_text_height = 0;
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}
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if ((_elements & Indicator) && _fixed_diameter) {
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req->width = _text_width + lrint (_diameter) + xpad;
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req->height = max (_text_height, (int) lrint (_diameter)) + ypad;
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} else {
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req->width = _text_width + xpad;
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req->height = _text_height + ypad;
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}
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}
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void
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ArdourButton::set_colors ()
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{
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uint32_t start_color;
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uint32_t end_color;
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uint32_t r, g, b, a;
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uint32_t text_color;
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uint32_t led_color;
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/* we use the edge of the button to show Selected state, so the
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* color/pattern used there will vary depending on that
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*/
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if (edge_pattern) {
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cairo_pattern_destroy (edge_pattern);
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}
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if (_elements & Edge) {
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edge_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, _height);
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if (visual_state() & CairoWidget::Selected) {
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start_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 border start selected", get_name()));
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end_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 border end selected", get_name()));
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} else {
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start_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 border start", get_name()));
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end_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 border end", get_name()));
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}
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UINT_TO_RGBA (start_color, &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgba (edge_pattern, 0, r/255.0,g/255.0,b/255.0, 0.7);
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UINT_TO_RGBA (end_color, &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgba (edge_pattern, 1, r/255.0,g/255.0,b/255.0, 0.7);
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}
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/* the fill pattern is used to indicate Normal/Active/Mid state
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*/
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if (fill_pattern) {
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cairo_pattern_destroy (fill_pattern);
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}
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if (_elements & Body) {
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fill_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, _height);
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if (active_state() == Mid) {
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start_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 fill start mid", get_name()));
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end_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 fill end mid", get_name()));
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} else if (active_state() == Active) {
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start_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 fill start active", get_name()));
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end_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 fill end active", get_name()));
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} else {
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start_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 fill start", get_name()));
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end_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 fill end", get_name()));
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}
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UINT_TO_RGBA (start_color, &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgba (fill_pattern, 0, r/255.0,g/255.0,b/255.0, a/255.0);
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UINT_TO_RGBA (end_color, &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgba (fill_pattern, 1, r/255.0,g/255.0,b/255.0, a/255.0);
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}
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if (led_inset_pattern) {
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cairo_pattern_destroy (led_inset_pattern);
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}
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if (reflection_pattern) {
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cairo_pattern_destroy (reflection_pattern);
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}
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if (_elements & Indicator) {
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led_inset_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter);
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cairo_pattern_add_color_stop_rgba (led_inset_pattern, 0, 0,0,0, 0.4);
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cairo_pattern_add_color_stop_rgba (led_inset_pattern, 1, 1,1,1, 0.7);
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reflection_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter/2-3);
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cairo_pattern_add_color_stop_rgba (reflection_pattern, 0, 1,1,1, active_state() ? 0.4 : 0.2);
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cairo_pattern_add_color_stop_rgba (reflection_pattern, 1, 1,1,1, 0.0);
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}
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/* text and LED colors depend on Active/Normal/Mid */
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if (active_state() == Active) {
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text_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 text active", get_name()));
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led_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 led active", get_name()));
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} else if (active_state() == Mid) {
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text_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 text mid", get_name()));
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led_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 led active", get_name()));
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} else {
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text_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 text", get_name()));
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led_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1 led", get_name()));
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}
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UINT_TO_RGBA (text_color, &r, &g, &b, &a);
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text_r = r/255.0;
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text_g = g/255.0;
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text_b = b/255.0;
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text_a = a/255.0;
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UINT_TO_RGBA (led_color, &r, &g, &b, &a);
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led_r = r/255.0;
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led_g = g/255.0;
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led_b = b/255.0;
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led_a = a/255.0;
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set_dirty ();
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}
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void
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ArdourButton::set_led_left (bool yn)
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{
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_led_left = yn;
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}
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bool
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ArdourButton::on_button_press_event (GdkEventButton *ev)
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{
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if ((_elements & Indicator) && _distinct_led_click) {
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/* if within LED, swallow event */
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int top = lrint (_height/2.0 - _diameter/2.0);
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int bottom = lrint (_height/2.0 + _diameter/2.0);
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int left;
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int right;
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if (_elements & Text) {
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if (_led_left) {
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left = 4;
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right = left + _diameter;
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} else {
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left = lrint (_width - 4 - _diameter/2.0);
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right = left + _diameter;
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}
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} else {
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left = _width/2.0 - (_diameter/2.0);
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right = _width/2.0 + (_diameter/2.0);
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}
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if (ev->x >= left && ev->x <= right && ev->y <= bottom && ev->y >= top) {
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return true;
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}
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}
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if (binding_proxy.button_press_handler (ev)) {
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return true;
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}
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if (!_act_on_release) {
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if (_action) {
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_action->activate ();
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return true;
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}
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}
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return false;
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}
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bool
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ArdourButton::on_button_release_event (GdkEventButton *ev)
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{
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if ((_elements & Indicator) && _distinct_led_click) {
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/* if within LED, emit signal */
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int top = lrint (_height/2.0 - _diameter/2.0);
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int bottom = lrint (_height/2.0 + _diameter/2.0);
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int left;
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int right;
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if (_led_left) {
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left = 4;
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right = left + _diameter;
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} else {
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left = lrint (_width - 4 - _diameter/2.0);
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right = left + _diameter;
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}
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if (ev->x >= left && ev->x <= right && ev->y <= bottom && ev->y >= top) {
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signal_led_clicked(); /* EMIT SIGNAL */
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return true;
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}
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}
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if (_act_on_release) {
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if (_action) {
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_action->activate ();
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return true;
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}
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}
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return false;
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}
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void
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ArdourButton::set_distinct_led_click (bool yn)
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{
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_distinct_led_click = yn;
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}
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void
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ArdourButton::color_handler ()
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{
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set_colors ();
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set_dirty ();
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}
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void
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ArdourButton::on_size_allocate (Allocation& alloc)
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{
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CairoWidget::on_size_allocate (alloc);
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set_colors ();
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}
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void
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ArdourButton::set_controllable (boost::shared_ptr<Controllable> c)
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{
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watch_connection.disconnect ();
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binding_proxy.set_controllable (c);
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}
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void
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ArdourButton::watch ()
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{
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boost::shared_ptr<Controllable> c (binding_proxy.get_controllable ());
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if (!c) {
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warning << _("button cannot watch state of non-existing Controllable\n") << endmsg;
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return;
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}
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c->Changed.connect (watch_connection, invalidator(*this), boost::bind (&ArdourButton::controllable_changed, this), gui_context());
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}
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void
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ArdourButton::controllable_changed ()
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{
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float val = binding_proxy.get_controllable()->get_value();
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if (fabs (val) >= 0.5f) {
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set_active_state (CairoWidget::Active);
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} else {
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unset_active_state ();
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}
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}
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void
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ArdourButton::set_related_action (RefPtr<Action> act)
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{
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_action = act;
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Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
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if (tact) {
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tact->signal_toggled().connect (sigc::mem_fun (*this, &ArdourButton::action_toggled));
|
|
}
|
|
}
|
|
|
|
void
|
|
ArdourButton::action_toggled ()
|
|
{
|
|
Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
|
|
|
|
if (tact) {
|
|
if (tact->get_active()) {
|
|
set_active_state (CairoWidget::Active);
|
|
} else {
|
|
unset_active_state ();
|
|
}
|
|
}
|
|
}
|