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LibGfx+Everywhere: Change Gfx::Rect to be endpoint exclusive

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Previously, calling `.right()` on a `Gfx::Rect` would return the last
column's coordinate still inside the rectangle, or `left + width - 1`.
This is called 'endpoint inclusive' and does not make a lot of sense for
`Gfx::Rect<float>` where a rectangle of width 5 at position (0, 0) would
return 4 as its right side. This same problem exists for `.bottom()`.

This changes `Gfx::Rect` to be endpoint exclusive, which gives us the
nice property that `width = right - left` and `height = bottom - top`.
It enables us to treat `Gfx::Rect<int>` and `Gfx::Rect<float>` exactly
the same.

All users of `Gfx::Rect` have been updated accordingly.
This commit is contained in:
Jelle Raaijmakers 2023-05-22 00:41:18 +02:00 • committed by Andreas Kling
parent b7f4363791
commit f391ccfe53
88 changed files with 524 additions and 518 deletions
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4
Userland/Libraries/LibGUI/ValueSlider.cpp
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@ -84,7 +84,7 @@ void ValueSlider::paint_event(PaintEvent& event)
painter.fill_rect_with_gradient(m_orientation, bar_rect(), palette().inactive_window_border1(), palette().inactive_window_border2());
auto unfilled_rect = bar_rect();
unfilled_rect.set_left(knob_rect().right());
unfilled_rect.set_left(knob_rect().right() - 1);
painter.fill_rect(unfilled_rect, palette().base());
Gfx::StylePainter::paint_frame(painter, bar_rect(), palette(), Gfx::FrameStyle::SunkenContainer);
@ -143,7 +143,7 @@ int ValueSlider::value_at(Gfx::IntPoint position) const
float leftmost_knob_center = (float)bar_rect().left() + (float)knob_thickness / 2;
if (position.x() < leftmost_knob_center)
return min();
float rightmost_knob_center = (float)bar_rect().right() - (float)knob_thickness / 2;
float rightmost_knob_center = (float)(bar_rect().right() - 1) - (float)knob_thickness / 2;
if (position.x() > rightmost_knob_center)
return max();
float relative_offset = (float)(position.x() - leftmost_knob_center) / (rightmost_knob_center - leftmost_knob_center);