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WindowServer: Split double-duty Window::normalize_rect()
This commit: - merges the two(!) places that defined independently the minimum size of a window. - splits Window::normalize_rect(), which was originally just a function to apply the minimum size requirement, and has taken on the additional job of nudging windows back onto the desktop. This inadvertantly fixes a crash that happens when a malicious program creates a window of size (0, 0). Now, a window at [0,0 50x50] is created instead.
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parent
79f534ef12
commit
cf586311a6
4 changed files with 30 additions and 24 deletions
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@ -176,27 +176,30 @@ void Window::set_rect_without_repaint(const Gfx::IntRect& rect)
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m_frame.notify_window_rect_changed(old_rect, rect); // recomputes occlusions
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}
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void Window::normalize_rect(bool force_titlebar_visible)
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void Window::apply_minimum_size(Gfx::IntRect& rect)
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{
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Gfx::IntSize minimum_size { 1, 1 };
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if (type() == WindowType::Normal)
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minimum_size = { 50, 50 };
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rect.set_width(max(minimum_size.width(), rect.width()));
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rect.set_height(max(minimum_size.height(), rect.height()));
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}
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void Window::nudge_into_desktop(bool force_titlebar_visible)
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{
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Gfx::IntRect arena = WindowManager::the().arena_rect_for_type(type());
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auto min_size = 1;
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auto min_visible = 1;
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if (type() == WindowType::Normal) {
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min_size = 50;
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if (type() == WindowType::Normal)
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min_visible = 30;
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}
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// Blow up to the appropriate size.
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auto new_width = max(min_size, width());
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auto new_height = max(min_size, height());
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// Push the frame around such that at least `min_visible` pixels of the *frame* are in the desktop rect.
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auto old_frame_rect = frame().rect();
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Gfx::IntRect new_frame_rect = {
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clamp(old_frame_rect.x(), arena.left() + min_visible - new_width, arena.right() - min_visible),
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clamp(old_frame_rect.y(), arena.top() + min_visible - new_height, arena.bottom() - min_visible),
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old_frame_rect.width() + new_width - width(),
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old_frame_rect.height() + new_height - height(),
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clamp(old_frame_rect.x(), arena.left() + min_visible - width(), arena.right() - min_visible),
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clamp(old_frame_rect.y(), arena.top() + min_visible - height(), arena.bottom() - min_visible),
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old_frame_rect.width(),
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old_frame_rect.height(),
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};
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// Make sure that at least half of the titlebar is visible.
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@ -209,8 +212,8 @@ void Window::normalize_rect(bool force_titlebar_visible)
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Gfx::IntRect new_window_rect = {
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x() + new_frame_rect.x() - old_frame_rect.x(),
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y() + new_frame_rect.y() - old_frame_rect.y(),
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width() + new_frame_rect.width() - old_frame_rect.width(),
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height() + new_frame_rect.height() - old_frame_rect.height(),
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width(),
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height(),
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};
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set_rect(new_window_rect);
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}
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