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Waveview: properly draw 1px outline

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Robin Gareus 2021-11-14 19:13:38 +01:00
parent 3f69e8e329
commit 70a07eec48
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 4 additions and 6 deletions
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10
libs/waveview/wave_view.cc
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@ -614,6 +614,7 @@ WaveView::draw_image (Cairo::RefPtr<Cairo::ImageSurface>& image, PeakData* peaks
wave_context->translate (0.5, 0.5); wave_context->translate (0.5, 0.5);
outline_context->set_line_width (1.0); outline_context->set_line_width (1.0);
outline_context->set_line_cap (Cairo::LINE_CAP_ROUND);
outline_context->translate (0.5, 0.5); outline_context->translate (0.5, 0.5);
clip_context->set_line_width (1.0); clip_context->set_line_width (1.0);
@ -672,8 +673,7 @@ WaveView::draw_image (Cairo::RefPtr<Cairo::ImageSurface>& image, PeakData* peaks
clip_context->rel_line_to (0, min (clip_height, ceil(tips[i].spread + .5))); clip_context->rel_line_to (0, min (clip_height, ceil(tips[i].spread + .5)));
} else { } else {
outline_context->move_to (i, tips[i].top); outline_context->move_to (i, tips[i].top);
/* normal upper terminal dot */ outline_context->line_to (i, tips[i].top);
outline_context->rel_line_to (0, -1.0);
} }
} }
@ -740,12 +740,10 @@ WaveView::draw_image (Cairo::RefPtr<Cairo::ImageSurface>& image, PeakData* peaks
white pixel in the middle). white pixel in the middle).
*/ */
outline_context->move_to (i, tips[i].bot); outline_context->move_to (i, tips[i].bot);
/* normal lower terminal dot; line moves up */ outline_context->line_to (i, tips[i].bot);
outline_context->rel_line_to (0, -1.0);
outline_context->move_to (i, tips[i].top); outline_context->move_to (i, tips[i].top);
/* normal upper terminal dot, line moves down */ outline_context->line_to (i, tips[i].top);
outline_context->rel_line_to (0, 1.0);
} }
} else { } else {
bool clipped = false; bool clipped = false;