ardour/livetrax
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audio clip editor: actual scrolling with the scroll bar

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Some issues remain to be solved, related to scroll groups and coordinate offsets
This commit is contained in:
Paul Davis 2021-12-10 17:56:10 -07:00
parent e61c493fa5
commit 3efd26e864
1 changed files with 6 additions and 10 deletions
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16
gtk2_ardour/audio_clip_editor.cc
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@ -106,6 +106,7 @@ AudioClipEditor::AudioClipEditor ()
scroll_bar_handle->Event.connect (sigc::mem_fun (*this, &AudioClipEditor::scroll_event_handler));
waves_container = new ArdourCanvas::ScrollGroup (frame, ScrollGroup::ScrollsHorizontally);
add_scroller (*waves_container);
line_container = new ArdourCanvas::Container (waves_container);
const double line_width = 3.;
@ -255,7 +256,6 @@ void
AudioClipEditor::LineDrag::end (GdkEventButton* ev)
{
line.ungrab();
std::cerr << "grab end\n";
}
void
@ -263,7 +263,6 @@ AudioClipEditor::LineDrag::motion (GdkEventMotion* ev)
{
line.set_x0 (ev->x);
line.set_x1 (ev->x);
std::cerr << "move to " << ev->x << ", " << ev->y << std::endl;
}
void
@ -297,9 +296,8 @@ AudioClipEditor::scroll_changed ()
scroll_fraction = std::min (1., std::max (0., scroll_fraction));
const samplepos_t s = llrintf (audio_region->source (0)->length().samples () * scroll_fraction);
std::cerr << "fract is now " << scroll_fraction << " of " << audio_region->source (0)->length().samples() << " = " << s << " pix " << sample_to_pixel (s) << std::endl;
waves_container->scroll_to (Duple (sample_to_pixel (s), 0));
scroll_to (sample_to_pixel (s), 0);
queue_draw ();
}
AudioClipEditor::ScrollDrag::ScrollDrag (AudioClipEditor& e)
@ -407,9 +405,9 @@ AudioClipEditor::on_size_allocate (Gtk::Allocation& alloc)
position_lines ();
start_line->set_y1 (frame->get().height() - 2.);
end_line->set_y1 (frame->get().height() - 2.);
loop_line->set_y1 (frame->get().height() - 2.);
start_line->set_y1 (frame->get().height() - 2. - scroll_bar_height);
end_line->set_y1 (frame->get().height() - 2. - scroll_bar_height);
loop_line->set_y1 (frame->get().height() - 2. - scroll_bar_height);
set_wave_heights ();
}
@ -446,8 +444,6 @@ AudioClipEditor::set_wave_heights ()
const Distance w = frame->get().height() - scroll_bar_trough->get().height() - 2.;
Distance ht = w / waves.size();
std::cerr << "wave heights: " << ht << std::endl;
for (auto & wave : waves) {
wave->set_height (ht);
wave->set_y_position (n * ht);