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/*
* 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/HashMap.h>
#include <AK/SharedBuffer.h>
#include <LibGUI/Action.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MenuItem.h>
#include <LibGUI/WindowServerConnection.h>
#include <LibGfx/Bitmap.h>
//#define MENU_DEBUG
namespace GUI {
static HashMap<int, Menu*>& all_menus()
{
static HashMap<int, Menu*>* map;
if (!map)
map = new HashMap<int, Menu*>();
return *map;
}
Menu* Menu::from_menu_id(int menu_id)
{
auto it = all_menus().find(menu_id);
if (it == all_menus().end())
return nullptr;
return (*it).value;
}
Menu::Menu(const StringView& name)
: m_name(name)
{
}
Menu::~Menu()
{
unrealize_menu();
}
void Menu::set_icon(const Gfx::Bitmap* icon)
{
m_icon = icon;
}
void Menu::add_action(NonnullRefPtr<Action> action)
{
m_items.append(make<MenuItem>(m_menu_id, move(action)));
#ifdef GMENU_DEBUG
dbgprintf("GUI::Menu::add_action(): MenuItem Menu ID: %d\n", m_menu_id);
#endif
}
Menu& Menu::add_submenu(const String& name)
{
auto submenu = Menu::construct(name);
m_items.append(make<MenuItem>(m_menu_id, submenu));
return submenu;
}
void Menu::add_separator()
{
m_items.append(make<MenuItem>(m_menu_id, MenuItem::Type::Separator));
}
void Menu::realize_if_needed(const RefPtr<Action>& default_action)
{
if (m_menu_id == -1 || m_last_default_action.ptr() != default_action)
realize_menu(default_action);
}
void Menu::popup(const Gfx::IntPoint& screen_position, const RefPtr<Action>& default_action)
{
realize_if_needed(default_action);
WindowServerConnection::the().post_message(Messages::WindowServer::PopupMenu(m_menu_id, screen_position));
}
void Menu::dismiss()
{
if (m_menu_id == -1)
return;
WindowServerConnection::the().post_message(Messages::WindowServer::DismissMenu(m_menu_id));
}
template<typename IconContainerType>
static int ensure_realized_icon(IconContainerType& container)
{
int icon_buffer_id = -1;
if (container.icon()) {
ASSERT(container.icon()->format() == Gfx::BitmapFormat::RGBA32);
ASSERT(container.icon()->size() == Gfx::IntSize(16, 16));
if (container.icon()->shbuf_id() == -1) {
auto shared_buffer = SharedBuffer::create_with_size(container.icon()->size_in_bytes());
ASSERT(shared_buffer);
auto shared_icon = Gfx::Bitmap::create_with_shared_buffer(Gfx::BitmapFormat::RGBA32, *shared_buffer, container.icon()->size());
memcpy(shared_buffer->template data<u8>(), container.icon()->scanline_u8(0), container.icon()->size_in_bytes());
shared_buffer->seal();
shared_buffer->share_with(WindowServerConnection::the().server_pid());
container.set_icon(shared_icon);
}
icon_buffer_id = container.icon()->shbuf_id();
}
return icon_buffer_id;
}
int Menu::realize_menu(RefPtr<Action> default_action)
{
unrealize_menu();
m_menu_id = WindowServerConnection::the().send_sync<Messages::WindowServer::CreateMenu>(m_name)->menu_id();
#ifdef MENU_DEBUG
dbgprintf("GUI::Menu::realize_menu(): New menu ID: %d\n", m_menu_id);
#endif
ASSERT(m_menu_id > 0);
for (size_t i = 0; i < m_items.size(); ++i) {
auto& item = m_items[i];
item.set_menu_id({}, m_menu_id);
item.set_identifier({}, i);
if (item.type() == MenuItem::Type::Separator) {
WindowServerConnection::the().send_sync<Messages::WindowServer::AddMenuSeparator>(m_menu_id);
continue;
}
if (item.type() == MenuItem::Type::Submenu) {
auto& submenu = *item.submenu();
submenu.realize_if_needed(default_action);
int icon_buffer_id = ensure_realized_icon(submenu);
WindowServerConnection::the().send_sync<Messages::WindowServer::AddMenuItem>(m_menu_id, i, submenu.menu_id(), submenu.name(), true, false, false, false, "", icon_buffer_id, false);
continue;
}
if (item.type() == MenuItem::Type::Action) {
auto& action = *item.action();
int icon_buffer_id = ensure_realized_icon(action);
auto shortcut_text = action.shortcut().is_valid() ? action.shortcut().to_string() : String();
bool exclusive = action.group() && action.group()->is_exclusive() && action.is_checkable();
bool is_default = (default_action.ptr() == &action);
WindowServerConnection::the().send_sync<Messages::WindowServer::AddMenuItem>(m_menu_id, i, -1, action.text(), action.is_enabled(), action.is_checkable(), action.is_checkable() ? action.is_checked() : false, is_default, shortcut_text, icon_buffer_id, exclusive);
}
}
all_menus().set(m_menu_id, this);
m_last_default_action = default_action;
return m_menu_id;
}
void Menu::unrealize_menu()
{
if (m_menu_id == -1)
return;
all_menus().remove(m_menu_id);
WindowServerConnection::the().send_sync<Messages::WindowServer::DestroyMenu>(m_menu_id);
m_menu_id = -1;
}
void Menu::realize_menu_if_needed()
{
if (menu_id() == -1)
realize_menu();
}
Action* Menu::action_at(size_t index)
{
if (index >= m_items.size())
return nullptr;
return m_items[index].action();
}
}
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