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Implement the Lock Scroll on Cursor option in the audio display

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Originally committed to SVN as r5941.
This commit is contained in:
Thomas Goyne 2011-11-30 00:40:32 +00:00
parent c6b97612ae
commit 9203f17f4d
1 changed files with 16 additions and 1 deletions
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17
aegisub/src/audio_display.cpp
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@ -1209,7 +1209,22 @@ void AudioDisplay::OnAudioOpen(AudioProvider *provider)
void AudioDisplay::OnPlaybackPosition(int64_t sample_position)
{
SetTrackCursor(AbsoluteXFromSamples(sample_position), false);
int pixel_position = AbsoluteXFromSamples(sample_position);
SetTrackCursor(pixel_position, false);
if (OPT_GET("Audio/Lock Scroll on Cursor")->GetBool())
{
int client_width = GetClientSize().GetWidth();
int edge_size = client_width / 20;
if (scroll_left > 0 && pixel_position < scroll_left + edge_size)
{
ScrollBy(-std::min(edge_size, scroll_left));
}
else if (scroll_left + client_width < std::min(pixel_audio_width - 1, pixel_position + edge_size))
{
ScrollBy(std::min(edge_size, pixel_audio_width - client_width - scroll_left - 1));
}
}
}
void AudioDisplay::OnSelectionChanged()