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serenity/Servers/WindowServer/MenuManager.cpp
Shannon Booth e9687ee50e WindowServer: Control menu title font from menubar
It makes a little more sense for the menubar to control what the font of
the menu title is, as opposed to the menu manager. Menumanager now
simply uses the font that the menu wants it to use.
2020-03-10 09:37:34 +01:00

402 lines
12 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2020, Shannon Booth <shannon.ml.booth@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Badge.h>
#include <AK/FileSystemPath.h>
#include <AK/QuickSort.h>
#include <LibCore/DirIterator.h>
#include <LibGfx/Font.h>
#include <LibGfx/Painter.h>
#include <WindowServer/AppletManager.h>
#include <WindowServer/MenuManager.h>
#include <WindowServer/Screen.h>
#include <WindowServer/WindowManager.h>
#include <unistd.h>
//#define DEBUG_MENUS
namespace WindowServer {
static MenuManager* s_the;
MenuManager& MenuManager::the()
{
ASSERT(s_the);
return *s_the;
}
MenuManager::MenuManager()
{
s_the = this;
m_needs_window_resize = true;
// NOTE: This ensures that the system menu has the correct dimensions.
set_current_menubar(nullptr);
m_window = Window::construct(*this, WindowType::Menubar);
m_window->set_rect(menubar_rect());
}
MenuManager::~MenuManager()
{
}
bool MenuManager::is_open(const Menu& menu) const
{
for (size_t i = 0; i < m_open_menu_stack.size(); ++i) {
if (&menu == m_open_menu_stack[i].ptr())
return true;
}
return false;
}
void MenuManager::draw()
{
auto& wm = WindowManager::the();
auto palette = wm.palette();
auto menubar_rect = this->menubar_rect();
if (m_needs_window_resize) {
m_window->set_rect(menubar_rect);
AppletManager::the().calculate_applet_rects(window());
m_needs_window_resize = false;
}
Gfx::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());
for_each_active_menubar_menu([&](Menu& 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 = palette.menu_selection_text();
}
painter.draw_text(
menu.text_rect_in_menubar(),
menu.name(),
menu.title_font(),
Gfx::TextAlignment::CenterLeft,
text_color);
return IterationDecision::Continue;
});
AppletManager::the().draw();
}
void MenuManager::refresh()
{
if (!m_window)
return;
draw();
window().invalidate();
}
void MenuManager::event(Core::Event& event)
{
if (WindowManager::the().active_window_is_modal())
return Core::Object::event(event);
if (static_cast<Event&>(event).is_mouse_event()) {
handle_mouse_event(static_cast<MouseEvent&>(event));
return;
}
if (static_cast<Event&>(event).is_key_event()) {
auto& key_event = static_cast<const KeyEvent&>(event);
if (key_event.type() == Event::KeyUp && key_event.key() == Key_Escape) {
close_everyone();
return;
}
if (event.type() == Event::KeyDown) {
for_each_active_menubar_menu([&](Menu& menu) {
if (is_open(menu))
menu.dispatch_event(event);
return IterationDecision::Continue;
});
}
}
return Core::Object::event(event);
}
void MenuManager::handle_mouse_event(MouseEvent& mouse_event)
{
bool handled_menubar_event = false;
for_each_active_menubar_menu([&](Menu& menu) {
if (menu.rect_in_menubar().contains(mouse_event.position())) {
handle_menu_mouse_event(menu, mouse_event);
handled_menubar_event = true;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
if (handled_menubar_event)
return;
if (has_open_menu()) {
auto* topmost_menu = m_open_menu_stack.last().ptr();
ASSERT(topmost_menu);
auto* window = topmost_menu->menu_window();
ASSERT(window);
ASSERT(window->is_visible());
bool event_is_inside_current_menu = window->rect().contains(mouse_event.position());
if (event_is_inside_current_menu) {
WindowManager::the().set_hovered_window(window);
auto translated_event = mouse_event.translated(-window->position());
WindowManager::the().deliver_mouse_event(*window, translated_event);
return;
}
if (topmost_menu->hovered_item())
topmost_menu->clear_hovered_item();
if (mouse_event.type() == Event::MouseDown || mouse_event.type() == Event::MouseUp) {
auto* window_menu_of = topmost_menu->window_menu_of();
if (window_menu_of) {
bool event_is_inside_taskbar_button = window_menu_of->taskbar_rect().contains(mouse_event.position());
if (event_is_inside_taskbar_button && !topmost_menu->is_window_menu_open()) {
topmost_menu->set_window_menu_open(true);
return;
}
}
if (mouse_event.type() == Event::MouseDown) {
close_bar();
topmost_menu->set_window_menu_open(false);
}
}
if (mouse_event.type() == Event::MouseMove) {
for (auto& menu : m_open_menu_stack) {
if (!menu)
continue;
if (!menu->menu_window()->rect().contains(mouse_event.position()))
continue;
WindowManager::the().set_hovered_window(menu->menu_window());
auto translated_event = mouse_event.translated(-menu->menu_window()->position());
WindowManager::the().deliver_mouse_event(*menu->menu_window(), translated_event);
break;
}
}
return;
}
AppletManager::the().dispatch_event(static_cast<Event&>(mouse_event));
}
void MenuManager::handle_menu_mouse_event(Menu& menu, const MouseEvent& event)
{
bool is_hover_with_any_menu_open = event.type() == MouseEvent::MouseMove
&& has_open_menu()
&& (m_open_menu_stack.first()->menubar() || m_open_menu_stack.first() == m_system_menu.ptr());
bool is_mousedown_with_left_button = event.type() == MouseEvent::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) {
open_menu(menu);
return;
}
if (!m_bar_open)
close_everyone();
}
void MenuManager::set_needs_window_resize()
{
m_needs_window_resize = true;
}
void MenuManager::close_all_menus_from_client(Badge<ClientConnection>, ClientConnection& client)
{
if (!has_open_menu())
return;
if (m_open_menu_stack.first()->client() != &client)
return;
close_everyone();
}
void MenuManager::close_everyone()
{
for (auto& menu : m_open_menu_stack) {
if (menu && menu->menu_window())
menu->menu_window()->set_visible(false);
menu->clear_hovered_item();
}
m_open_menu_stack.clear();
m_current_menu = nullptr;
refresh();
}
void MenuManager::close_everyone_not_in_lineage(Menu& menu)
{
Vector<Menu*> 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 MenuManager::close_menus(const Vector<Menu*>& menus)
{
for (auto& menu : menus) {
if (menu == m_current_menu)
m_current_menu = nullptr;
if (menu->menu_window())
menu->menu_window()->set_visible(false);
menu->clear_hovered_item();
m_open_menu_stack.remove_first_matching([&](auto& entry) {
return entry == menu;
});
}
refresh();
}
static void collect_menu_subtree(Menu& menu, Vector<Menu*>& 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<MenuItem&>(item).submenu(), menus);
}
}
void MenuManager::close_menu_and_descendants(Menu& menu)
{
Vector<Menu*> menus_to_close;
collect_menu_subtree(menu, menus_to_close);
close_menus(menus_to_close);
}
void MenuManager::toggle_menu(Menu& menu)
{
if (is_open(menu)) {
close_menu_and_descendants(menu);
return;
}
open_menu(menu);
}
void MenuManager::open_menu(Menu& menu)
{
if (is_open(menu))
return;
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();
}
void MenuManager::set_current_menu(Menu* menu, bool is_submenu)
{
if (menu == m_current_menu)
return;
if (!is_submenu) {
if (menu)
close_everyone_not_in_lineage(*menu);
else
close_everyone();
}
if (!menu) {
m_current_menu = nullptr;
return;
}
m_current_menu = menu->make_weak_ptr();
if (m_open_menu_stack.find([menu](auto& other) { return menu == other.ptr(); }).is_end())
m_open_menu_stack.append(menu->make_weak_ptr());
}
void MenuManager::close_bar()
{
close_everyone();
m_bar_open = false;
}
Gfx::Rect MenuManager::menubar_rect() const
{
return { 0, 0, Screen::the().rect().width(), 18 };
}
void MenuManager::set_current_menubar(MenuBar* 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
Gfx::Point next_menu_location { MenuManager::menubar_menu_margin() / 2, 0 };
for_each_active_menubar_menu([&](Menu& menu) {
int text_width = menu.title_font().width(menu.name());
menu.set_rect_in_menubar({ next_menu_location.x() - MenuManager::menubar_menu_margin() / 2, 0, text_width + MenuManager::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);
return IterationDecision::Continue;
});
refresh();
}
void MenuManager::close_menubar(MenuBar& menubar)
{
if (current_menubar() == &menubar)
set_current_menubar(nullptr);
}
void MenuManager::set_system_menu(Menu& menu)
{
m_system_menu = menu.make_weak_ptr();
set_current_menubar(m_current_menubar);
}
void MenuManager::did_change_theme()
{
++m_theme_index;
refresh();
}
}