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Code Pull Requests Releases Activity

part one of allowing region drag to the bottom (drop-zone) rect of track canvas

This commit is contained in:
Paul Davis 2014-05-17 12:17:16 -04:00
parent 205b5d97d5
commit a8c56ff927
1 changed files with 84 additions and 69 deletions
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153
gtk2_ardour/editor_drag.cc
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@ -641,38 +641,41 @@ RegionMotionDrag::y_movement_allowed (int delta_track, double delta_layer) const
void
RegionMotionDrag::motion (GdkEvent* event, bool first_move)
{
double delta_layer = 0;
int delta_time_axis_view = 0;
assert (!_views.empty ());
/* Find the TimeAxisView that the pointer is now over */
pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (_drags->current_pointer_y ());
/* Bail early if we're not over a track */
RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv.first);
if (!rtv || !rtv->is_track()) {
_editor->verbose_cursor()->hide ();
return;
}
if (first_move && tv.first->view()->layer_display() == Stacked) {
tv.first->view()->set_layer_display (Expanded);
}
/* Note: time axis views in this method are often expressed as an index into the _time_axis_views vector */
/* Here's the current pointer position in terms of time axis view and layer */
int const current_pointer_time_axis_view = find_time_axis_view (tv.first);
double const current_pointer_layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
/* Find the TimeAxisView that the pointer is now over */
pair<TimeAxisView*, double> const r = _editor->trackview_by_y_position (_drags->current_pointer_y ());
TimeAxisView* tv = r.first;
if (tv) {
RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
double layer = r.second;
if (first_move && tv->view()->layer_display() == Stacked) {
tv->view()->set_layer_display (Expanded);
}
/* Here's the current pointer position in terms of time axis view and layer */
int const current_pointer_time_axis_view = find_time_axis_view (tv);
double const current_pointer_layer = tv->layer_display() == Overlaid ? 0 : layer;
/* Work out the change in y */
delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
delta_layer = current_pointer_layer - _last_pointer_layer;
}
/* Work out the change in x */
framepos_t pending_region_position;
double const x_delta = compute_x_delta (event, &pending_region_position);
/* Work out the change in y */
int delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
double delta_layer = current_pointer_layer - _last_pointer_layer;
/* Verify change in y */
if (!y_movement_allowed (delta_time_axis_view, delta_layer)) {
/* this y movement is not allowed, so do no y movement this time */
delta_time_axis_view = 0;
@ -725,58 +728,70 @@ RegionMotionDrag::motion (GdkEvent* event, bool first_move)
this_delta_layer = - i->layer;
}
/* The TimeAxisView that this region is now on */
TimeAxisView* tv = _time_axis_views[i->time_axis_view + delta_time_axis_view];
if (tv) {
/* Ensure it is moved from stacked -> expanded if appropriate */
if (tv->view()->layer_display() == Stacked) {
tv->view()->set_layer_display (Expanded);
}
/* The TimeAxisView that this region is now on */
TimeAxisView* current_tv = _time_axis_views[i->time_axis_view + delta_time_axis_view];
/* Ensure it is moved from stacked -> expanded if appropriate */
if (current_tv->view()->layer_display() == Stacked) {
current_tv->view()->set_layer_display (Expanded);
}
/* We're only allowed to go -ve in layer on Expanded views */
if (tv->view()->layer_display() != Expanded && (i->layer + this_delta_layer) < 0) {
this_delta_layer = - i->layer;
}
/* We're only allowed to go -ve in layer on Expanded views */
if (current_tv->view()->layer_display() != Expanded && (i->layer + this_delta_layer) < 0) {
this_delta_layer = - i->layer;
}
/* Set height */
rv->set_height (tv->view()->child_height ());
/* Set height */
rv->set_height (current_tv->view()->child_height ());
/* Update show/hidden status as the region view may have come from a hidden track,
or have moved to one.
*/
if (tv->hidden ()) {
rv->get_canvas_group()->hide ();
} else {
rv->get_canvas_group()->show ();
}
/* Update the DraggingView */
i->time_axis_view += delta_time_axis_view;
i->layer += this_delta_layer;
if (_brushing) {
_editor->mouse_brush_insert_region (rv, pending_region_position);
} else {
double x = 0;
double y = 0;
/* Get the y coordinate of the top of the track that this region is now on */
tv->canvas_display()->item_to_canvas (x, y);
/* And adjust for the layer that it should be on */
StreamView* cv = tv->view ();
switch (cv->layer_display ()) {
case Overlaid:
break;
case Stacked:
y += (cv->layers() - i->layer - 1) * cv->child_height ();
break;
case Expanded:
y += (cv->layers() - i->layer - 0.5) * 2 * cv->child_height ();
break;
/* Update show/hidden status as the region view may have come from a hidden track,
or have moved to one.
*/
if (current_tv->hidden ()) {
rv->get_canvas_group()->hide ();
} else {
rv->get_canvas_group()->show ();
}
/* Now move the region view */
/* Update the DraggingView */
i->time_axis_view += delta_time_axis_view;
i->layer += this_delta_layer;
if (_brushing) {
_editor->mouse_brush_insert_region (rv, pending_region_position);
} else {
double x = 0;
double y = 0;
/* Get the y coordinate of the top of the track that this region is now on */
current_tv->canvas_display()->item_to_canvas (x, y);
/* And adjust for the layer that it should be on */
StreamView* cv = current_tv->view ();
switch (cv->layer_display ()) {
case Overlaid:
break;
case Stacked:
y += (cv->layers() - i->layer - 1) * cv->child_height ();
break;
case Expanded:
y += (cv->layers() - i->layer - 0.5) * 2 * cv->child_height ();
break;
}
/* Now move the region view */
rv->move (x_delta, y - rv->get_canvas_group()->position().y);
}
} else {
double y = 0;
double x = 0;
TimeAxisView* last = _time_axis_views.back();
last->canvas_display()->item_to_canvas (x, y);
cerr << "not over track, have " << _views.size() << " move to last @ " << y;
y += last->effective_height();
cerr << " + height of " << last->effective_height() << " ... y = " << y << endl;
rv->move (x_delta, y - rv->get_canvas_group()->position().y);
}