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serenity/Servers/WindowServer/WSMenuManager.cpp
Andreas Kling 94ca55cefd Meta: Add license header to source files
As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.

For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.

Going forward, all new source files should include a license header.
2020-01-18 09:45:54 +01:00

538 lines
18 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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/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
static WSMenuManager* s_the;
WSMenuManager& WSMenuManager::the()
{
ASSERT(s_the);
return *s_the;
}
WSMenuManager::WSMenuManager()
{
s_the = this;
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);
m_window = WSWindow::construct(*this, WSWindowType::Menubar);
m_window->set_rect(menubar_rect());
}
WSMenuManager::~WSMenuManager()
{
}
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);
}
}
if (static_cast<WSEvent&>(event).is_key_event()) {
auto& key_event = static_cast<const WSKeyEvent&>(event);
if (key_event.type() == WSEvent::KeyUp && key_event.key() == Key_Escape) {
close_everyone();
return;
}
if (event.type() == WSEvent::KeyDown) {
for_each_active_menubar_menu([&](WSMenu& menu) {
if (is_open(menu))
menu.dispatch_event(event);
return IterationDecision::Continue;
});
}
}
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() == m_system_menu.ptr());
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) {
open_menu(menu);
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);
menu->clear_hovered_item();
}
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);
menu->clear_hovered_item();
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::toggle_menu(WSMenu& menu)
{
if (is_open(menu)) {
close_menu_and_descendants(menu);
return;
}
open_menu(menu);
}
void WSMenuManager::open_menu(WSMenu& 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 WSMenuManager::set_current_menu(WSMenu* menu, bool is_submenu)
{
if (!is_submenu) {
if (menu)
close_everyone_not_in_lineage(*menu);
else
close_everyone();
}
if (!menu) {
m_current_menu = nullptr;
return;
}
m_open_menu_stack.append(menu->make_weak_ptr());
m_current_menu = 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);
}