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serenity/Servers/WindowServer/WSMenuManager.cpp
Shannon Booth 7557251fac WindowServer: Move menu related code from WindowManager to MenuManager
Menus are now owned by menu manager instead of being split between the
window manager and menu manager. If the window server wants to change
a menu, or call menu related functionality, this will need to be done
through the menu manager.

Further refactoring is likely needed, but this seems like a good start
for seperating menu logic from window logic.
2020-01-05 09:02:24 +01:00

471 lines
16 KiB
C++

#include <AK/FileSystemPath.h>
#include <AK/QuickSort.h>
#include <LibCore/CDirIterator.h>
#include <LibDraw/Font.h>
#include <LibDraw/PNGLoader.h>
#include <LibDraw/Painter.h>
#include <WindowServer/WSMenuManager.h>
#include <WindowServer/WSScreen.h>
#include <WindowServer/WSWindowManager.h>
#include <unistd.h>
//#define DEBUG_MENUS
WSMenuManager::WSMenuManager()
{
m_username = getlogin();
m_needs_window_resize = true;
HashTable<String> seen_app_categories;
{
CDirIterator dt("/res/apps", CDirIterator::SkipDots);
while (dt.has_next()) {
auto af_name = dt.next_path();
auto af_path = String::format("/res/apps/%s", af_name.characters());
auto af = CConfigFile::open(af_path);
if (!af->has_key("App", "Name") || !af->has_key("App", "Executable"))
continue;
auto app_name = af->read_entry("App", "Name");
auto app_executable = af->read_entry("App", "Executable");
auto app_category = af->read_entry("App", "Category");
auto app_icon_path = af->read_entry("Icons", "16x16");
m_apps.append({ app_executable, app_name, app_icon_path, app_category });
seen_app_categories.set(app_category);
}
}
Vector<String> sorted_app_categories;
for (auto& category : seen_app_categories)
sorted_app_categories.append(category);
quick_sort(sorted_app_categories.begin(), sorted_app_categories.end(), [](auto& a, auto& b) { return a < b; });
u8 system_menu_name[] = { 0xc3, 0xb8, 0 };
m_system_menu = WSMenu::construct(nullptr, -1, String((const char*)system_menu_name));
// First we construct all the necessary app category submenus.
for (const auto& category : sorted_app_categories) {
if (m_app_category_menus.contains(category))
continue;
auto category_menu = WSMenu::construct(nullptr, 5000 + m_app_category_menus.size(), category);
category_menu->on_item_activation = [this](auto& item) {
if (item.identifier() >= 1 && item.identifier() <= 1u + m_apps.size() - 1) {
if (fork() == 0) {
const auto& bin = m_apps[item.identifier() - 1].executable;
execl(bin.characters(), bin.characters(), nullptr);
ASSERT_NOT_REACHED();
}
}
};
auto item = make<WSMenuItem>(*m_system_menu, -1, category);
item->set_submenu_id(category_menu->menu_id());
m_system_menu->add_item(move(item));
m_app_category_menus.set(category, move(category_menu));
}
// Then we create and insert all the app menu items into the right place.
int app_identifier = 1;
for (const auto& app : m_apps) {
auto parent_menu = m_app_category_menus.get(app.category).value_or(*m_system_menu);
parent_menu->add_item(make<WSMenuItem>(*m_system_menu, app_identifier++, app.name, String(), true, false, false, load_png(app.icon_path)));
}
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
m_themes_menu = WSMenu::construct(nullptr, 9000, "Themes");
auto themes_menu_item = make<WSMenuItem>(*m_system_menu, 100, "Themes");
themes_menu_item->set_submenu_id(m_themes_menu->menu_id());
m_system_menu->add_item(move(themes_menu_item));
{
CDirIterator dt("/res/themes", CDirIterator::SkipDots);
while (dt.has_next()) {
auto theme_name = dt.next_path();
auto theme_path = String::format("/res/themes/%s", theme_name.characters());
m_themes.append({ FileSystemPath(theme_name).title(), theme_path });
}
quick_sort(m_themes.begin(), m_themes.end(), [](auto& a, auto& b) { return a.name < b.name; });
}
{
int theme_identifier = 9000;
for (auto& theme : m_themes) {
m_themes_menu->add_item(make<WSMenuItem>(*m_themes_menu, theme_identifier++, theme.name));
}
}
m_themes_menu->on_item_activation = [this](WSMenuItem& item) {
auto& theme = m_themes[(int)item.identifier() - 9000];
WSWindowManager::the().update_theme(theme.path, theme.name);
++m_theme_index;
};
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 100, "Reload WM Config File"));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 200, "About...", String(), true, false, false, load_png("/res/icons/16x16/ladybug.png")));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 300, "Shutdown..."));
m_system_menu->on_item_activation = [this](WSMenuItem& item) {
if (item.identifier() >= 1 && item.identifier() <= 1u + m_apps.size() - 1) {
if (fork() == 0) {
const auto& bin = m_apps[item.identifier() - 1].executable;
execl(bin.characters(), bin.characters(), nullptr);
ASSERT_NOT_REACHED();
}
}
switch (item.identifier()) {
case 100:
WSWindowManager::the().reload_config(true);
break;
case 200:
if (fork() == 0) {
execl("/bin/About", "/bin/About", nullptr);
ASSERT_NOT_REACHED();
}
return;
case 300:
if (fork() == 0) {
execl("/bin/SystemDialog", "/bin/SystemDialog", "--shutdown", nullptr);
ASSERT_NOT_REACHED();
}
return;
}
#ifdef DEBUG_MENUS
dbg() << "WSMenu 1 item activated: " << item.text();
#endif
};
// NOTE: This ensures that the system menu has the correct dimensions.
set_current_menubar(nullptr);
}
WSMenuManager::~WSMenuManager()
{
}
void WSMenuManager::setup()
{
m_window = WSWindow::construct(*this, WSWindowType::Menubar);
m_window->set_rect(menubar_rect());
}
bool WSMenuManager::is_open(const WSMenu& menu) const
{
for (int i = 0; i < m_open_menu_stack.size(); ++i) {
if (&menu == m_open_menu_stack[i].ptr())
return true;
}
return false;
}
void WSMenuManager::draw()
{
auto& wm = WSWindowManager::the();
auto palette = wm.palette();
auto menubar_rect = this->menubar_rect();
if (m_needs_window_resize) {
int username_width = Font::default_bold_font().width(m_username);
m_username_rect = {
menubar_rect.right() - menubar_menu_margin() / 2 - Font::default_bold_font().width(m_username),
menubar_rect.y(),
username_width,
menubar_rect.height()
};
int right_edge_x = m_username_rect.left() - 4;
for (auto& existing_applet : m_applets) {
if (!existing_applet)
continue;
Rect new_applet_rect(right_edge_x - existing_applet->size().width(), 0, existing_applet->size().width(), existing_applet->size().height());
Rect dummy_menubar_rect(0, 0, 0, 18);
new_applet_rect.center_vertically_within(dummy_menubar_rect);
existing_applet->set_rect_in_menubar(new_applet_rect);
right_edge_x = existing_applet->rect_in_menubar().x() - 4;
}
m_window->set_rect(menubar_rect);
m_needs_window_resize = false;
}
Painter painter(*window().backing_store());
painter.fill_rect(menubar_rect, palette.window());
painter.draw_line({ 0, menubar_rect.bottom() }, { menubar_rect.right(), menubar_rect.bottom() }, palette.threed_shadow1());
int index = 0;
for_each_active_menubar_menu([&](WSMenu& menu) {
Color text_color = palette.window_text();
if (is_open(menu)) {
painter.fill_rect(menu.rect_in_menubar(), palette.menu_selection());
painter.draw_rect(menu.rect_in_menubar(), palette.menu_selection().darkened());
text_color = Color::White;
}
painter.draw_text(
menu.text_rect_in_menubar(),
menu.name(),
index == 1 ? wm.app_menu_font() : wm.menu_font(),
TextAlignment::CenterLeft,
text_color);
++index;
return IterationDecision::Continue;
});
painter.draw_text(m_username_rect, m_username, Font::default_bold_font(), TextAlignment::CenterRight, palette.window_text());
for (auto& applet : m_applets) {
if (!applet)
continue;
draw_applet(*applet);
}
}
void WSMenuManager::tick_clock()
{
refresh();
}
void WSMenuManager::refresh()
{
if (!m_window)
return;
draw();
window().invalidate();
}
void WSMenuManager::event(CEvent& event)
{
if (WSWindowManager::the().active_window_is_modal())
return CObject::event(event);
if (event.type() == WSEvent::MouseMove || event.type() == WSEvent::MouseUp || event.type() == WSEvent::MouseDown || event.type() == WSEvent::MouseWheel) {
auto& mouse_event = static_cast<WSMouseEvent&>(event);
for_each_active_menubar_menu([&](WSMenu& menu) {
if (menu.rect_in_menubar().contains(mouse_event.position())) {
handle_menu_mouse_event(menu, mouse_event);
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
for (auto& applet : m_applets) {
if (!applet)
continue;
if (!applet->rect_in_menubar().contains(mouse_event.position()))
continue;
auto local_event = mouse_event.translated(-applet->rect_in_menubar().location());
applet->event(local_event);
}
}
return CObject::event(event);
}
void WSMenuManager::handle_menu_mouse_event(WSMenu& menu, const WSMouseEvent& event)
{
bool is_hover_with_any_menu_open = event.type() == WSMouseEvent::MouseMove
&& !m_open_menu_stack.is_empty()
&& (m_open_menu_stack.first()->menubar() || m_open_menu_stack.first() == system_menu());
bool is_mousedown_with_left_button = event.type() == WSMouseEvent::MouseDown && event.button() == MouseButton::Left;
bool should_open_menu = &menu != m_current_menu && (is_hover_with_any_menu_open || is_mousedown_with_left_button);
if (is_mousedown_with_left_button)
m_bar_open = !m_bar_open;
if (should_open_menu && m_bar_open) {
if (m_current_menu == &menu)
return;
close_everyone();
if (!menu.is_empty()) {
menu.redraw_if_theme_changed();
auto& menu_window = menu.ensure_menu_window();
menu_window.move_to({ menu.rect_in_menubar().x(), menu.rect_in_menubar().bottom() + 2 });
menu_window.set_visible(true);
}
set_current_menu(&menu);
refresh();
return;
}
if (!m_bar_open)
close_everyone();
}
void WSMenuManager::set_needs_window_resize()
{
m_needs_window_resize = true;
}
void WSMenuManager::close_all_menus_from_client(Badge<WSClientConnection>, WSClientConnection& client)
{
if (m_open_menu_stack.is_empty())
return;
if (m_open_menu_stack.first()->client() != &client)
return;
close_everyone();
}
void WSMenuManager::close_everyone()
{
for (auto& menu : m_open_menu_stack) {
if (menu && menu->menu_window())
menu->menu_window()->set_visible(false);
}
m_open_menu_stack.clear();
m_current_menu = nullptr;
refresh();
}
void WSMenuManager::close_everyone_not_in_lineage(WSMenu& menu)
{
Vector<WSMenu*> menus_to_close;
for (auto& open_menu : m_open_menu_stack) {
if (!open_menu)
continue;
if (&menu == open_menu.ptr() || open_menu->is_menu_ancestor_of(menu))
continue;
menus_to_close.append(open_menu);
}
close_menus(menus_to_close);
}
void WSMenuManager::close_menus(const Vector<WSMenu*>& menus)
{
for (auto& menu : menus) {
if (menu == m_current_menu)
m_current_menu = nullptr;
if (menu->menu_window())
menu->menu_window()->set_visible(false);
m_open_menu_stack.remove_first_matching([&](auto& entry) {
return entry == menu;
});
}
refresh();
}
static void collect_menu_subtree(WSMenu& menu, Vector<WSMenu*>& menus)
{
menus.append(&menu);
for (int i = 0; i < menu.item_count(); ++i) {
auto& item = menu.item(i);
if (!item.is_submenu())
continue;
collect_menu_subtree(*const_cast<WSMenuItem&>(item).submenu(), menus);
}
}
void WSMenuManager::close_menu_and_descendants(WSMenu& menu)
{
Vector<WSMenu*> menus_to_close;
collect_menu_subtree(menu, menus_to_close);
close_menus(menus_to_close);
}
void WSMenuManager::set_current_menu(WSMenu* menu, bool is_submenu)
{
if (!is_submenu && m_current_menu)
m_current_menu->close();
if (menu)
m_current_menu = menu->make_weak_ptr();
if (!is_submenu) {
close_everyone();
if (menu)
m_open_menu_stack.append(menu->make_weak_ptr());
} else {
m_open_menu_stack.append(menu->make_weak_ptr());
}
}
void WSMenuManager::close_bar()
{
close_everyone();
m_bar_open = false;
}
void WSMenuManager::add_applet(WSWindow& applet)
{
int right_edge_x = m_username_rect.left() - 4;
for (auto& existing_applet : m_applets) {
if (existing_applet)
right_edge_x = existing_applet->rect_in_menubar().x() - 4;
}
Rect new_applet_rect(right_edge_x - applet.size().width(), 0, applet.size().width(), applet.size().height());
Rect dummy_menubar_rect(0, 0, 0, 18);
new_applet_rect.center_vertically_within(dummy_menubar_rect);
applet.set_rect_in_menubar(new_applet_rect);
m_applets.append(applet.make_weak_ptr());
}
void WSMenuManager::remove_applet(WSWindow& applet)
{
m_applets.remove_first_matching([&](auto& entry) {
return &applet == entry.ptr();
});
}
void WSMenuManager::draw_applet(const WSWindow& applet)
{
if (!applet.backing_store())
return;
Painter painter(*window().backing_store());
painter.fill_rect(applet.rect_in_menubar(), WSWindowManager::the().palette().window());
painter.blit(applet.rect_in_menubar().location(), *applet.backing_store(), applet.backing_store()->rect());
}
void WSMenuManager::invalidate_applet(const WSWindow& applet, const Rect& rect)
{
draw_applet(applet);
window().invalidate(rect.translated(applet.rect_in_menubar().location()));
}
Rect WSMenuManager::menubar_rect() const
{
return { 0, 0, WSScreen::the().rect().width(), 18 };
}
WSMenu* WSMenuManager::find_internal_menu_by_id(int menu_id)
{
if (m_themes_menu->menu_id() == menu_id)
return m_themes_menu.ptr();
for (auto& it : m_app_category_menus) {
if (menu_id == it.value->menu_id())
return it.value;
}
return nullptr;
}
void WSMenuManager::set_current_menubar(WSMenuBar* menubar)
{
if (menubar)
m_current_menubar = menubar->make_weak_ptr();
else
m_current_menubar = nullptr;
#ifdef DEBUG_MENUS
dbg() << "[WM] Current menubar is now " << menubar;
#endif
Point next_menu_location { WSMenuManager::menubar_menu_margin() / 2, 0 };
int index = 0;
for_each_active_menubar_menu([&](WSMenu& menu) {
int text_width = index == 1 ? Font::default_bold_font().width(menu.name()) : Font::default_font().width(menu.name());
menu.set_rect_in_menubar({ next_menu_location.x() - WSMenuManager::menubar_menu_margin() / 2, 0, text_width + WSMenuManager::menubar_menu_margin(), menubar_rect().height() - 1 });
menu.set_text_rect_in_menubar({ next_menu_location, { text_width, menubar_rect().height() } });
next_menu_location.move_by(menu.rect_in_menubar().width(), 0);
++index;
return IterationDecision::Continue;
});
refresh();
}
void WSMenuManager::close_menubar(WSMenuBar& menubar)
{
if (current_menubar() == &menubar)
set_current_menubar(nullptr);
}