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Only expand thumb at Paint

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This will give a more natural indication of where the position is. When dragging with mouse, now the thumb block will always center under the mouse position.

Fix wangqr/Aegisub#26
This commit is contained in:
wangqr 2019-10-26 02:44:40 -04:00
parent f74b3acd0e
commit 41c0e49813
1 changed files with 7 additions and 2 deletions
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9
src/audio_display.cpp
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@ -154,7 +154,7 @@ class AudioDisplay::AudioDisplayScrollbar final : public AudioDisplayInteraction
// Recalculate thumb bounds from position and length data // Recalculate thumb bounds from position and length data
void RecalculateThumb() void RecalculateThumb()
{ {
thumb.width = std::max<int>(min_width, (int64_t)bounds.width * page_length / data_length); thumb.width = int((int64_t)bounds.width * page_length / data_length);
thumb.height = height; thumb.height = height;
thumb.x = int((int64_t)bounds.width * position / data_length); thumb.x = int((int64_t)bounds.width * position / data_length);
thumb.y = bounds.y; thumb.y = bounds.y;
@ -264,7 +264,12 @@ public:
dc.SetPen(wxPen(colours.Light())); dc.SetPen(wxPen(colours.Light()));
dc.SetBrush(wxBrush(colours.Light())); dc.SetBrush(wxBrush(colours.Light()));
dc.DrawRectangle(thumb);
// Paint the thumb at least min_width, expand to both left and right
if (thumb.width < min_width)
dc.DrawRectangle(wxRect(thumb.x - (min_width - thumb.width) / 2, thumb.y, min_width, thumb.height));
else
dc.DrawRectangle(thumb);
} }
}; };