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LibGUI: Fix off-by-one in ScrollableWidget

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This was most notable in the widgets TextBox and TextEditor (and
therefore also ComboBox and ColorInput), because there the cursor
regularly landed just one pixel outside the visible region when
going to the right.
This commit is contained in:
Ben Wiederhake
2020-05-01 04:24:35 +02:00
committed by Andreas Kling
parent 5d3ac4ec9e
commit b6bea3d25b
1 changed files with 8 additions and 6 deletions
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14
Libraries/LibGUI/ScrollableWidget.cpp
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@@ -171,16 +171,18 @@ void ScrollableWidget::scroll_into_view(const Gfx::Rect& rect, bool scroll_horiz
return;
if (scroll_vertically) {
if (rect.top() < visible_content_rect.top())
if (rect.top() < visible_content_rect.top()) {
m_vertical_scrollbar->set_value(rect.top());
else if (rect.bottom() > visible_content_rect.bottom())
m_vertical_scrollbar->set_value(rect.bottom() - visible_content_rect.height());
} else if (rect.bottom() > visible_content_rect.bottom()) {
m_vertical_scrollbar->set_value(rect.bottom() - visible_content_rect.height() + 1);
}
}
if (scroll_horizontally) {
if (rect.left() < visible_content_rect.left())
if (rect.left() < visible_content_rect.left()) {
m_horizontal_scrollbar->set_value(rect.left());
else if (rect.right() > visible_content_rect.right())
m_horizontal_scrollbar->set_value(rect.right() - visible_content_rect.width());
} else if (rect.right() > visible_content_rect.right()) {
m_horizontal_scrollbar->set_value(rect.right() - visible_content_rect.width() + 1);
}
}
}