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LibGUI+LibGfx: Improve focus rect appearance

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Draw a dotted focus rect to make it stand out more. Also make it much
larger on regular text-only GUI::Buttons.
This commit is contained in:
Andreas Kling 2020-10-26 20:43:59 +01:00
parent f6084d42d9
commit b7dfa83223
6 changed files with 47 additions and 2 deletions
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31
Libraries/LibGfx/Painter.cpp
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@ -279,6 +279,37 @@ void Painter::draw_ellipse_intersecting(const IntRect& rect, Color color, int th
}
}
template<typename RectType, typename Callback>
static void for_each_pixel_around_rect_clockwise(const RectType& rect, Callback callback)
{
if (rect.is_empty())
return;
for (auto x = rect.left(); x <= rect.right(); ++x) {
callback(x, rect.top());
}
for (auto y = rect.top() + 1; y <= rect.bottom(); ++y) {
callback(rect.right(), y);
}
for (auto x = rect.right() - 1; x >= rect.left(); --x) {
callback(x, rect.bottom());
}
for (auto y = rect.bottom() - 1; y > rect.top(); --y) {
callback(rect.left(), y);
}
}
void Painter::draw_focus_rect(const IntRect& rect, Color color)
{
if (rect.is_empty())
return;
bool state = false;
for_each_pixel_around_rect_clockwise(rect, [&](auto x, auto y) {
if (state)
set_pixel(x, y, color);
state = !state;
});
}
void Painter::draw_rect(const IntRect& a_rect, Color color, bool rough)
{
IntRect rect = a_rect.translated(translation());