do not draw waveform outline at x-positions where the waveform "spread" would not leave at least 1 pixel between the two outline pixels.
Plus a better comment.
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@ -625,7 +625,11 @@ WaveView::draw_image (Cairo::RefPtr<Cairo::ImageSurface>& image, PeakData* _peak
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clipped = true;
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}
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if (!clipped) {
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if (!clipped && tips[i].spread > 2.0) {
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/* only draw the outline if the spread
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implies 3 or more pixels (so that we see 1
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white pixel in the middle).
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*/
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outline_context->move_to (i, tips[i].bot);
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/* normal lower terminal dot; line moves up */
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outline_context->rel_line_to (0, -1.0);
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@ -645,10 +649,15 @@ WaveView::draw_image (Cairo::RefPtr<Cairo::ImageSurface>& image, PeakData* _peak
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}
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if (!clipped) {
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/* special case where only 1 pixel of
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* the waveform line is drawn (and
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* nothing else).
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*
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* we draw a 1px "line", pretending
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* that the span is 1.0 (whether it is
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* zero or 1.0)
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*/
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wave_context->move_to (i, tips[i].top);
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/* special case where outline only is drawn.
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* we draw a 1px "line", pretending that the span is 1.0
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*/
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wave_context->rel_line_to (0, 1.0);
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}
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}
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