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WindowServer: Use early return to reduce nesting

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This commit is contained in:
Shannon Booth 2020-02-11 20:33:38 +13:00 • committed by Andreas Kling
parent 14f9a29502
commit 97508844dc
1 changed files with 27 additions and 24 deletions
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51
Servers/WindowServer/Menu.cpp
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@ -125,33 +125,36 @@ void Menu::redraw()
Window& Menu::ensure_menu_window() Window& Menu::ensure_menu_window()
{ {
if (m_menu_window)
return *m_menu_window;
int width = this->content_width(); int width = this->content_width();
if (!m_menu_window) {
Gfx::Point next_item_location(frame_thickness(), frame_thickness());
for (auto& item : m_items) {
int height = 0;
if (item.type() == MenuItem::Text)
height = item_height();
else if (item.type() == MenuItem::Separator)
height = 8;
item.set_rect({ next_item_location, { width - frame_thickness() * 2, height } });
next_item_location.move_by(0, height);
}
int window_height_available = Screen::the().height() - MenuManager::the().menubar_rect().height() - frame_thickness() * 2; Gfx::Point next_item_location(frame_thickness(), frame_thickness());
int max_window_height = (window_height_available / item_height()) * item_height() + frame_thickness() * 2; for (auto& item : m_items) {
int content_height = m_items.is_empty() ? 0 : (m_items.last().rect().bottom() + 1) + frame_thickness(); int height = 0;
int window_height = min(max_window_height, content_height); if (item.type() == MenuItem::Text)
if (window_height < content_height) { height = item_height();
m_scrollable = true; else if (item.type() == MenuItem::Separator)
m_max_scroll_offset = item_count() - window_height / item_height() + 2; height = 8;
} item.set_rect({ next_item_location, { width - frame_thickness() * 2, height } });
next_item_location.move_by(0, height);
auto window = Window::construct(*this, WindowType::Menu);
window->set_rect(0, 0, width, window_height);
m_menu_window = move(window);
draw();
} }
int window_height_available = Screen::the().height() - MenuManager::the().menubar_rect().height() - frame_thickness() * 2;
int max_window_height = (window_height_available / item_height()) * item_height() + frame_thickness() * 2;
int content_height = m_items.is_empty() ? 0 : (m_items.last().rect().bottom() + 1) + frame_thickness();
int window_height = min(max_window_height, content_height);
if (window_height < content_height) {
m_scrollable = true;
m_max_scroll_offset = item_count() - window_height / item_height() + 2;
}
auto window = Window::construct(*this, WindowType::Menu);
window->set_rect(0, 0, width, window_height);
m_menu_window = move(window);
draw();
return *m_menu_window; return *m_menu_window;
} }