Method ScrollTimeRangeInView

src/audio_display.cpp:631–670

}

void AudioDisplay::ScrollTimeRangeInView(const TimeRange &range)
{
	int client_width = GetClientRect().GetWidth();
	int range_begin = AbsoluteXFromTime(range.begin());
	int range_end = AbsoluteXFromTime(range.end());
	int range_len = range_end - range_begin;

	// Remove 5 % from each side of the client area.
	int leftadjust = client_width / 20;
	int client_left = scroll_left + leftadjust;
	client_width = client_width * 9 / 10;

	// Is everything already in view?
	if (range_begin >= client_left && range_end <= client_left+client_width)
		return;

	// The entire range can fit inside the view, center it
	if (range_len < client_width)
	{
		ScrollPixelToLeft(range_begin - (client_width-range_len)/2 - leftadjust);
	}

	// Range doesn't fit in view and we're viewing a middle part of it, just leave it alone
	else if (range_begin < client_left && range_end > client_left+client_width)
	{
		// nothing
	}

	// Right edge is in view, scroll it as far to the right as possible
	else if (range_end >= client_left && range_end < client_left+client_width)
	{
		ScrollPixelToLeft(range_end - client_width - leftadjust);
	}

	// Nothing is in view or the left edge is in view, scroll left edge as far to the left as possible
	else
	{
		ScrollPixelToLeft(range_begin - leftadjust);
	}
}

void AudioDisplay::SetZoomLevel(int new_zoom_level)
{