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basics of autoscroll for pianoroll (mostly shared with Editor)

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More work to do moving/testing pianoroll autoscroll variant back into EditingContext
and sharing it with Editor.
This commit is contained in:
Paul Davis 2024-02-23 11:25:07 -07:00
parent 3fccf2b458
commit 48a6e8dfcf
10 changed files with 526 additions and 171 deletions
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123
gtk2_ardour/editor.cc
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@ -310,7 +310,6 @@ Editor::Editor ()
, _full_canvas_height (0)
, edit_controls_left_menu (0)
, edit_controls_right_menu (0)
, visual_change_queued(false)
, _tvl_no_redisplay(false)
, _tvl_redisplay_on_resume(false)
, _last_update_time (0)
@ -369,10 +368,6 @@ Editor::Editor ()
, _sections (0)
, _snapshots (0)
, _locations (0)
, autoscroll_horizontal_allowed (false)
, autoscroll_vertical_allowed (false)
, autoscroll_cnt (0)
, autoscroll_widget (0)
, show_gain_after_trim (false)
, _no_not_select_reimported_tracks (false)
, selection_op_cmd_depth (0)
@ -4169,36 +4164,6 @@ Editor::get_y_origin () const
return vertical_adjustment.get_value ();
}
/** Queue up a change to the viewport x origin.
* @param sample New x origin.
*/
void
Editor::reset_x_origin (samplepos_t sample)
{
pending_visual_change.add (VisualChange::TimeOrigin);
pending_visual_change.time_origin = sample;
ensure_visual_change_idle_handler ();
}
void
Editor::reset_y_origin (double y)
{
pending_visual_change.add (VisualChange::YOrigin);
pending_visual_change.y_origin = y;
ensure_visual_change_idle_handler ();
}
void
Editor::reset_zoom (samplecnt_t spp)
{
if (spp == samples_per_pixel) {
return;
}
pending_visual_change.add (VisualChange::ZoomLevel);
pending_visual_change.samples_per_pixel = spp;
ensure_visual_change_idle_handler ();
}
void
Editor::reposition_and_zoom (samplepos_t sample, double fpu)
@ -4369,77 +4334,6 @@ Editor::playhead_cursor_sample () const
return _playhead_cursor->current_sample();
}
void
Editor::queue_visual_videotimeline_update ()
{
pending_visual_change.add (VisualChange::VideoTimeline);
ensure_visual_change_idle_handler ();
}
void
Editor::ensure_visual_change_idle_handler ()
{
if (pending_visual_change.idle_handler_id < 0) {
/* see comment in add_to_idle_resize above. */
pending_visual_change.idle_handler_id = g_idle_add_full (G_PRIORITY_HIGH_IDLE + 10, _idle_visual_changer, this, NULL);
pending_visual_change.being_handled = false;
}
}
int
Editor::_idle_visual_changer (void* arg)
{
return static_cast<Editor*>(arg)->idle_visual_changer ();
}
void
Editor::pre_render ()
{
visual_change_queued = false;
if (pending_visual_change.pending != 0) {
ensure_visual_change_idle_handler();
}
}
int
Editor::idle_visual_changer ()
{
pending_visual_change.idle_handler_id = -1;
if (pending_visual_change.pending == 0) {
return 0;
}
/* set_horizontal_position() below (and maybe other calls) call
gtk_main_iteration(), so it's possible that a signal will be handled
half-way through this method. If this signal wants an
idle_visual_changer we must schedule another one after this one, so
mark the idle_handler_id as -1 here to allow that. Also make a note
that we are doing the visual change, so that changes in response to
super-rapid-screen-update can be dropped if we are still processing
the last one.
*/
if (visual_change_queued) {
return 0;
}
pending_visual_change.being_handled = true;
VisualChange vc = pending_visual_change;
pending_visual_change.pending = (VisualChange::Type) 0;
visual_changer (vc);
pending_visual_change.being_handled = false;
visual_change_queued = true;
return 0; /* this is always a one-shot call */
}
void
Editor::visual_changer (const VisualChange& vc)
{
@ -4497,6 +4391,23 @@ Editor::visual_changer (const VisualChange& vc)
_summary->set_overlays_dirty ();
}
void
Editor::queue_visual_videotimeline_update ()
{
pending_visual_change.add (VisualChange::VideoTimeline);
ensure_visual_change_idle_handler ();
}
void
Editor::pre_render ()
{
visual_change_queued = false;
if (pending_visual_change.pending != 0) {
ensure_visual_change_idle_handler();
}
}
struct EditorOrderTimeAxisSorter {
bool operator() (const TimeAxisView* a, const TimeAxisView* b) const {
return a->order () < b->order ();