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Code Issues Releases Wiki Activity

Fix snapping audio markers when dragging inactive line markers with ctrl 

We do need to check if the inactive markers are in the active set when
ctrl-dragging, as otherwise there'll always be a marker 0 pixels away to
snap to. Fortunately when ctrl-dragging all of the the markers involved
are by definition very close together, so it would be very difficult to
have enough markers to check for this to be a performance issue.

Closes #1823.
This commit is contained in:
Thomas Goyne 2015-03-01 11:09:43 -08:00
parent 801a8915d1
commit 40ae2cdc35
1 changed files with 14 additions and 10 deletions
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24
src/audio_timing_dialogue.cpp
View File

@ -845,6 +845,9 @@ int AudioTimingControllerDialogue::SnapMarkers(int snap_range, std::vector<Audio
std::vector<int> inactive_markers;
inactive_markers.reserve(inactive_lines.size() * 2 + selected_lines.size() * 2 + 2 - active.size());
// Add a marker to the set to check for snaps if it's in the right time
// range, isn't at the same place as a marker already in the set, and isn't
// one of the markers being moved
auto add_inactive = [&](const DialogueTimingMarker *m, bool check)
{
if (!marker_range.contains(*m)) return;
@ -853,13 +856,18 @@ int AudioTimingControllerDialogue::SnapMarkers(int snap_range, std::vector<Audio
inactive_markers.push_back(*m);
};
bool moving_entire_selection = clicked_ms != INT_MIN;
for (auto const& line : inactive_lines)
{
add_inactive(line.GetLeftMarker(), false);
add_inactive(line.GetRightMarker(), false);
// If we're alt-dragging the entire selection, there can't be any
// markers from inactive lines in the active set, so no need to check
// for them
add_inactive(line.GetLeftMarker(), !moving_entire_selection);
add_inactive(line.GetRightMarker(), !moving_entire_selection);
}
if (active.size() != selected_lines.size() * 2 + 2)
// And similarly, there can't be any inactive markers from selected lines
if (!moving_entire_selection)
{
for (auto const& line : selected_lines)
{
@ -870,16 +878,12 @@ int AudioTimingControllerDialogue::SnapMarkers(int snap_range, std::vector<Audio
add_inactive(active_line.GetRightMarker(), true);
}
int snap_distance = 0;
bool has_snapped = false;
int snap_distance = INT_MAX;
auto check = [&](int marker, int pos)
{
auto dist = marker - pos;
if (!has_snapped)
if (tabs(dist) < tabs(snap_distance))
snap_distance = dist;
else if (tabs(dist) < tabs(snap_distance))
snap_distance = dist;
has_snapped = true;
};
int prev = -1;
@ -908,7 +912,7 @@ int AudioTimingControllerDialogue::SnapMarkers(int snap_range, std::vector<Audio
}
}
if (!has_snapped || tabs(snap_distance) > snap_range)
if (tabs(snap_distance) > snap_range)
return 0;
for (auto m : active)