inline void
TabMenuDisplay::PaintMainMenuBorder(Canvas &canvas) const
{
PixelRect rc = GetMainMenuButtonSize(0);
rc.bottom = GetMainMenuButtonSize(GetNumMainMenuItems() - 1).bottom;
rc.Grow(GetTabLineHeight());
canvas.DrawFilledRectangle(rc, COLOR_BLACK);
}
inline void
TabMenuDisplay::PaintSubMenuBorder(Canvas &canvas,
const MainMenuButton &main_button) const
{
PixelRect rc = GetSubMenuButtonSize(main_button.first_page_index);
rc.bottom = GetSubMenuButtonSize(main_button.last_page_index).bottom;
rc.Grow(GetTabLineHeight());
canvas.DrawFilledRectangle(rc, COLOR_BLACK);
}
void
TabMenuDisplay::UpdateLayout()
{
const unsigned window_width = GetWidth();
const unsigned window_height = GetHeight();
const unsigned border_width = GetTabLineHeight();
const unsigned menu_button_height =
std::min(Layout::GetMaximumControlHeight(), window_height / 7u);
const unsigned menu_button_width = (window_width - 2 * border_width) / 2;
const unsigned offset = Layout::Scale(2);
const unsigned item_height = menu_button_height + border_width;
for (unsigned main_i = 0, main_y = border_width;
main_i < main_menu_buttons.size(); ++main_i) {
MainMenuButton &main = main_menu_buttons[main_i];
main.rc.left = 0;
main.rc.right = menu_button_width;
main.rc.top = main_y;
main.rc.bottom = main.rc.top + menu_button_height;
main_y = main.rc.bottom + border_width;
main.renderer.InvalidateLayout();
const unsigned group_height =
item_height * main.NumSubMenus() + border_width;
unsigned page_y = main.rc.top + offset;
if (page_y + group_height > window_height)
page_y = window_height - group_height - offset;
for (unsigned page_i = main.first_page_index;
page_i <= main.last_page_index; ++page_i) {
SubMenuButton &page = buttons[page_i];
page.rc.left = menu_button_width + border_width;
page.rc.right = page.rc.left + menu_button_width;
page.rc.top = page_y;
page.rc.bottom = page.rc.top + menu_button_height;
page_y = page.rc.bottom + border_width;
page.renderer.InvalidateLayout();
}
}
}
const PixelRect&
TabMenuControl::GetSubMenuButtonSize(unsigned page) const
{
assert(page < buttons.size());
if (buttons[page]->rc.left < buttons[page]->rc.right)
return buttons[page]->rc;
const PageItem &item = this->GetPageItem(page);
const MainMenuButton &main_button = GetMainMenuButton(item.main_menu_index);
const unsigned sub_index = page - main_button.first_page_index;
PixelRect &rc = buttons[page]->rc;
const UPixelScalar margin = Layout::Scale(1);
const UPixelScalar finalmargin = Layout::Scale(1);
const unsigned subMenuItemCount = main_button.NumSubMenus();
const UPixelScalar tabHeight = GetTabHeight();
const UPixelScalar butHeight = GetMenuButtonHeight();
const UPixelScalar itemHeight = butHeight + margin;
const UPixelScalar SubMenuHeight = itemHeight * subMenuItemCount + finalmargin;
const UPixelScalar topMainMenuItem = item.main_menu_index * itemHeight +
finalmargin;
const UPixelScalar offset = Layout::Scale(2);
const UPixelScalar topMainMenuItemWOffset = topMainMenuItem + offset;
const UPixelScalar subMenuTop =
(topMainMenuItemWOffset + SubMenuHeight <= tabHeight) ?
topMainMenuItemWOffset : tabHeight - SubMenuHeight - offset;
rc.top = subMenuTop + sub_index * itemHeight;
rc.bottom = rc.top + butHeight;
rc.left = GetMenuButtonWidth() + GetTabLineHeight();
rc.right = rc.left + GetMenuButtonWidth();
return buttons[page]->rc;
}
UPixelScalar
TabMenuControl::GetMenuButtonWidth() const
{
return (tab_display->GetTabWidth() - GetTabLineHeight()) / 2;
}
UPixelScalar
TabMenuControl::GetTabHeight() const
{
return GetMenuButtonHeight() * TabMenuControl::MAX_MAIN_MENU_ITEMS
+ GetTabLineHeight() * 2;
}
