git-svn-id: svn://localhost/ardour2/branches/3.0@6807 d708f5d6-7413-0410-9779-e7cbd77b26cf
532 lines
14 KiB
C++
532 lines
14 KiB
C++
/*
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Copyright (C) 2009 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 "ardour/session.h"
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#include "time_axis_view.h"
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#include "streamview.h"
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#include "editor_summary.h"
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#include "gui_thread.h"
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#include "editor.h"
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#include "region_view.h"
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#include "rgb_macros.h"
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#include "keyboard.h"
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using namespace std;
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using namespace ARDOUR;
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using Gtkmm2ext::Keyboard;
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/** Construct an EditorSummary.
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* @param e Editor to represent.
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*/
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EditorSummary::EditorSummary (Editor* e)
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: EditorComponent (e),
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_start (0),
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_end (1),
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_overhang_fraction (0.1),
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_x_scale (1),
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_y_scale (1),
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_last_playhead (-1),
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_move_dragging (false),
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_moved (false),
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_zoom_dragging (false)
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{
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Region::RegionPropertyChanged.connect (region_property_connection, invalidator (*this), boost::bind (&CairoWidget::set_dirty, this), gui_context());
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_editor->playhead_cursor->PositionChanged.connect (position_connection, invalidator (*this), ui_bind (&EditorSummary::playhead_position_changed, this, _1), gui_context());
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}
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/** Connect to a session.
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* @param s Session.
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*/
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void
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EditorSummary::set_session (Session* s)
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{
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EditorComponent::set_session (s);
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set_dirty ();
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if (_session) {
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_session->RegionRemoved.connect (_session_connections, invalidator (*this), boost::bind (&EditorSummary::set_dirty, this), gui_context());
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_session->StartTimeChanged.connect (_session_connections, invalidator (*this), boost::bind (&EditorSummary::set_dirty, this), gui_context());
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_session->EndTimeChanged.connect (_session_connections, invalidator (*this), boost::bind (&EditorSummary::set_dirty, this), gui_context());
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}
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}
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/** Handle an expose event.
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* @param event Event from GTK.
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*/
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bool
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EditorSummary::on_expose_event (GdkEventExpose* event)
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{
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CairoWidget::on_expose_event (event);
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if (_session == 0) {
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return false;
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}
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cairo_t* cr = gdk_cairo_create (get_window()->gobj());
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/* Render the view rectangle */
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pair<double, double> x;
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pair<double, double> y;
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get_editor (&x, &y);
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cairo_move_to (cr, x.first, y.first);
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cairo_line_to (cr, x.second, y.first);
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cairo_line_to (cr, x.second, y.second);
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cairo_line_to (cr, x.first, y.second);
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cairo_line_to (cr, x.first, y.first);
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cairo_set_source_rgba (cr, 1, 1, 1, 0.25);
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cairo_fill_preserve (cr);
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cairo_set_line_width (cr, 1);
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cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
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cairo_stroke (cr);
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/* Playhead */
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cairo_set_line_width (cr, 1);
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/* XXX: colour should be set from configuration file */
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cairo_set_source_rgba (cr, 1, 0, 0, 1);
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double const p = (_editor->playhead_cursor->current_frame - _start) * _x_scale;
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cairo_move_to (cr, p, 0);
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cairo_line_to (cr, p, _height);
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cairo_stroke (cr);
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_last_playhead = p;
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cairo_destroy (cr);
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return true;
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}
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/** Render the required regions to a cairo context.
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* @param cr Context.
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*/
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void
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EditorSummary::render (cairo_t* cr)
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{
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/* background */
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_rectangle (cr, 0, 0, _width, _height);
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cairo_fill (cr);
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if (_session == 0) {
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return;
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}
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/* compute start and end points for the summary */
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nframes_t const session_length = _session->current_end_frame() - _session->current_start_frame ();
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double const theoretical_start = _session->current_start_frame() - session_length * _overhang_fraction;
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_start = theoretical_start > 0 ? theoretical_start : 0;
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_end = _session->current_end_frame() + session_length * _overhang_fraction;
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/* compute total height of all tracks */
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int h = 0;
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int max_height = 0;
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for (TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
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int const t = (*i)->effective_height ();
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h += t;
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max_height = max (max_height, t);
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}
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_x_scale = static_cast<double> (_width) / (_end - _start);
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_y_scale = static_cast<double> (_height) / h;
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/* tallest a region should ever be in the summary, in pixels */
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int const tallest_region_pixels = _height / 16;
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if (max_height * _y_scale > tallest_region_pixels) {
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_y_scale = static_cast<double> (tallest_region_pixels) / max_height;
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}
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/* render regions */
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double y = 0;
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for (TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
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StreamView* s = (*i)->view ();
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if (s) {
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double const h = (*i)->effective_height () * _y_scale;
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cairo_set_line_width (cr, h);
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s->foreach_regionview (sigc::bind (
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sigc::mem_fun (*this, &EditorSummary::render_region),
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cr,
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y + h / 2
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));
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y += h;
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}
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}
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/* start and end markers */
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cairo_set_line_width (cr, 1);
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cairo_set_source_rgb (cr, 1, 1, 0);
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double const p = (_session->current_start_frame() - _start) * _x_scale;
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cairo_move_to (cr, p, 0);
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cairo_line_to (cr, p, _height);
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cairo_stroke (cr);
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double const q = (_session->current_end_frame() - _start) * _x_scale;
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cairo_move_to (cr, q, 0);
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cairo_line_to (cr, q, _height);
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cairo_stroke (cr);
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}
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/** Render a region for the summary.
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* @param r Region view.
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* @param cr Cairo context.
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* @param y y coordinate to render at.
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*/
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void
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EditorSummary::render_region (RegionView* r, cairo_t* cr, double y) const
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{
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uint32_t const c = r->get_fill_color ();
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cairo_set_source_rgb (cr, UINT_RGBA_R (c) / 255.0, UINT_RGBA_G (c) / 255.0, UINT_RGBA_B (c) / 255.0);
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if (r->region()->position() > _start) {
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cairo_move_to (cr, (r->region()->position() - _start) * _x_scale, y);
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} else {
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cairo_move_to (cr, 0, y);
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}
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if ((r->region()->position() + r->region()->length()) > _start) {
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cairo_line_to (cr, ((r->region()->position() - _start + r->region()->length())) * _x_scale, y);
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} else {
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cairo_line_to (cr, 0, y);
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}
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cairo_stroke (cr);
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}
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/** Set the summary so that just the overlays (viewbox, playhead etc.) will be re-rendered */
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void
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EditorSummary::set_overlays_dirty ()
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{
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ENSURE_GUI_THREAD (*this, &EditorSummary::set_overlays_dirty)
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queue_draw ();
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}
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/** Handle a size request.
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* @param req GTK requisition
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*/
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void
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EditorSummary::on_size_request (Gtk::Requisition *req)
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{
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/* Use a dummy, small width and the actual height that we want */
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req->width = 64;
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req->height = 32;
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}
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void
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EditorSummary::centre_on_click (GdkEventButton* ev)
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{
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pair<double, double> xr;
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pair<double, double> yr;
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get_editor (&xr, &yr);
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double const w = xr.second - xr.first;
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double const h = yr.second - yr.first;
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xr.first = ev->x - w / 2;
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xr.second = ev->x + w / 2;
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yr.first = ev->y - h / 2;
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yr.second = ev->y + h / 2;
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if (xr.first < 0) {
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xr.first = 0;
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xr.second = w;
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} else if (xr.second > _width) {
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xr.second = _width;
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xr.first = _width - w;
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}
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if (yr.first < 0) {
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yr.first = 0;
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yr.second = h;
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} else if (yr.second > _height) {
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yr.second = _height;
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yr.first = _height - h;
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}
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set_editor (xr, yr);
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}
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/** Handle a button press.
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* @param ev GTK event.
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*/
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bool
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EditorSummary::on_button_press_event (GdkEventButton* ev)
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{
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if (ev->button == 1) {
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pair<double, double> xr;
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pair<double, double> yr;
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get_editor (&xr, &yr);
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_start_editor_x = xr;
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_start_editor_y = yr;
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_start_mouse_x = ev->x;
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_start_mouse_y = ev->y;
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if (
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_start_editor_x.first <= _start_mouse_x && _start_mouse_x <= _start_editor_x.second &&
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_start_editor_y.first <= _start_mouse_y && _start_mouse_y <= _start_editor_y.second
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) {
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_start_position = IN_VIEWBOX;
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} else if (_start_editor_x.first <= _start_mouse_x && _start_mouse_x <= _start_editor_x.second) {
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_start_position = BELOW_OR_ABOVE_VIEWBOX;
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} else {
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_start_position = TO_LEFT_OR_RIGHT_OF_VIEWBOX;
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}
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if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
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/* primary-modifier-click: start a zoom drag */
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double const hx = (xr.first + xr.second) * 0.5;
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_zoom_left = ev->x < hx;
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_zoom_dragging = true;
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_editor->_dragging_playhead = true;
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/* In theory, we could support vertical dragging, which logically
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might scale track heights in order to make the editor reflect
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the dragged viewbox. However, having tried this:
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a) it's hard to do
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b) it's quite slow
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c) it doesn't seem particularly useful, especially with the
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limited height of the summary
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So at the moment we don't support that...
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*/
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} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
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/* secondary-modifier-click: locate playhead */
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if (_session) {
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_session->request_locate (ev->x / _x_scale + _start);
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}
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} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
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centre_on_click (ev);
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} else {
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/* ordinary click: start a move drag */
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_move_dragging = true;
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_moved = false;
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_editor->_dragging_playhead = true;
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}
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}
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return true;
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}
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void
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EditorSummary::get_editor (pair<double, double>* x, pair<double, double>* y) const
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{
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x->first = (_editor->leftmost_position () - _start) * _x_scale;
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x->second = x->first + _editor->current_page_frames() * _x_scale;
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y->first = _editor->vertical_adjustment.get_value() * _y_scale;
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y->second = y->first + (_editor->canvas_height () - _editor->get_canvas_timebars_vsize()) * _y_scale;
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}
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bool
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EditorSummary::on_motion_notify_event (GdkEventMotion* ev)
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{
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pair<double, double> xr = _start_editor_x;
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pair<double, double> yr = _start_editor_y;
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if (_move_dragging) {
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_moved = true;
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/* don't alter x if we clicked outside and above or below the viewbox */
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if (_start_position == IN_VIEWBOX || _start_position == TO_LEFT_OR_RIGHT_OF_VIEWBOX) {
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xr.first += ev->x - _start_mouse_x;
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xr.second += ev->x - _start_mouse_x;
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}
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/* don't alter y if we clicked outside and to the left or right of the viewbox */
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if (_start_position == IN_VIEWBOX || _start_position == BELOW_OR_ABOVE_VIEWBOX) {
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yr.first += ev->y - _start_mouse_y;
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yr.second += ev->y - _start_mouse_y;
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}
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if (xr.first < 0) {
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xr.second -= xr.first;
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xr.first = 0;
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}
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if (yr.first < 0) {
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yr.second -= yr.first;
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yr.first = 0;
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}
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set_editor (xr, yr);
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} else if (_zoom_dragging) {
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double const dx = ev->x - _start_mouse_x;
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if (_zoom_left) {
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xr.first += dx;
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} else {
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xr.second += dx;
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}
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set_editor (xr, yr);
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}
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return true;
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}
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bool
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EditorSummary::on_button_release_event (GdkEventButton*)
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{
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_move_dragging = false;
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_zoom_dragging = false;
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_editor->_dragging_playhead = false;
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return true;
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}
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bool
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EditorSummary::on_scroll_event (GdkEventScroll* ev)
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{
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/* mouse wheel */
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pair<double, double> xr;
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pair<double, double> yr;
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get_editor (&xr, &yr);
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double amount = 8;
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if (Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier)) {
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amount = 64;
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} else if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
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amount = 1;
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}
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if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
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/* primary-wheel == left-right scrolling */
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if (ev->direction == GDK_SCROLL_UP) {
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xr.first += amount;
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xr.second += amount;
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} else if (ev->direction == GDK_SCROLL_DOWN) {
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xr.first -= amount;
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xr.second -= amount;
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}
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} else {
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if (ev->direction == GDK_SCROLL_DOWN) {
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yr.first += amount;
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yr.second += amount;
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} else if (ev->direction == GDK_SCROLL_UP) {
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yr.first -= amount;
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yr.second -= amount;
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} else if (ev->direction == GDK_SCROLL_LEFT) {
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xr.first -= amount;
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xr.second -= amount;
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} else if (ev->direction == GDK_SCROLL_RIGHT) {
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xr.first += amount;
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xr.second += amount;
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}
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}
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set_editor (xr, yr);
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return true;
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}
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void
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EditorSummary::set_editor (pair<double,double> const & x, pair<double, double> const & y)
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{
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if (_editor->pending_visual_change.idle_handler_id < 0) {
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/* As a side-effect, the Editor's visual change idle handler processes
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pending GTK events. Hence this motion notify handler can be called
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in the middle of a visual change idle handler, and if this happens,
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the queue_visual_change calls below modify the variables that the
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idle handler is working with. This causes problems. Hence the
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check above. It ensures that we won't modify the pending visual change
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while a visual change idle handler is in progress. It's not perfect,
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as it also means that we won't change these variables if an idle handler
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is merely pending but not executing. But c'est la vie.
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*/
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/* proposed bottom of the editor with the requested position */
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double const pb = y.second / _y_scale;
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/* bottom of the canvas */
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double const ch = _editor->full_canvas_height - _editor->canvas_timebars_vsize;
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/* requested y position */
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double ly = y.first / _y_scale;
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/* clamp y position so as not to go off the bottom */
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if (pb > ch) {
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ly -= (pb - ch);
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}
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if (ly < 0) {
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ly = 0;
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}
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_editor->reset_x_origin (x.first / _x_scale + _start);
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_editor->reset_y_origin (ly);
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double const nx = (
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((x.second - x.first) / _x_scale) /
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_editor->frame_to_unit (_editor->current_page_frames())
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);
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if (nx != _editor->get_current_zoom ()) {
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_editor->reset_zoom (nx);
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}
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}
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}
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void
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EditorSummary::playhead_position_changed (nframes64_t p)
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{
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if (_session && int (p * _x_scale) != int (_last_playhead)) {
|
|
set_overlays_dirty ();
|
|
}
|
|
}
|
|
|
|
|