ladybird/Userland/Libraries/LibGUI/WindowServerConnection.cpp
2021-08-01 08:10:16 +02:00

372 lines
13 KiB
C++

/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Debug.h>
#include <AK/StringBuilder.h>
#include <LibCore/EventLoop.h>
#include <LibCore/MimeData.h>
#include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/Desktop.h>
#include <LibGUI/DisplayLink.h>
#include <LibGUI/DragOperation.h>
#include <LibGUI/EmojiInputDialog.h>
#include <LibGUI/Event.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Window.h>
#include <LibGUI/WindowServerConnection.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/FontDatabase.h>
#include <LibGfx/Palette.h>
#include <LibGfx/SystemTheme.h>
namespace GUI {
WindowServerConnection& WindowServerConnection::the()
{
static WindowServerConnection* s_connection = nullptr;
if (!s_connection)
s_connection = new WindowServerConnection;
return *s_connection;
}
static void set_system_theme_from_anonymous_buffer(Core::AnonymousBuffer buffer)
{
Gfx::set_system_theme(buffer);
Application::the()->set_system_palette(buffer);
}
WindowServerConnection::WindowServerConnection()
: IPC::ServerConnection<WindowClientEndpoint, WindowServerEndpoint>(*this, "/tmp/portal/window")
{
// NOTE: WindowServer automatically sends a "fast_greet" message to us when we connect.
// All we have to do is wait for it to arrive. This avoids a round-trip during application startup.
auto message = wait_for_specific_message<Messages::WindowClient::FastGreet>();
set_system_theme_from_anonymous_buffer(message->theme_buffer());
Desktop::the().did_receive_screen_rects({}, message->screen_rects(), message->main_screen_index(), message->virtual_desktop_rows(), message->virtual_desktop_columns());
Gfx::FontDatabase::set_default_font_query(message->default_font_query());
Gfx::FontDatabase::set_fixed_width_font_query(message->fixed_width_font_query());
m_client_id = message->client_id();
}
void WindowServerConnection::fast_greet(Vector<Gfx::IntRect> const&, u32, u32, u32, Core::AnonymousBuffer const&, String const&, String const&, i32)
{
// NOTE: This message is handled in the constructor.
}
void WindowServerConnection::update_system_theme(Core::AnonymousBuffer const& theme_buffer)
{
set_system_theme_from_anonymous_buffer(theme_buffer);
Window::update_all_windows({});
Window::for_each_window({}, [](auto& window) {
Core::EventLoop::current().post_event(window, make<ThemeChangeEvent>());
});
}
void WindowServerConnection::update_system_fonts(const String& default_font_query, const String& fixed_width_font_query)
{
Gfx::FontDatabase::set_default_font_query(default_font_query);
Gfx::FontDatabase::set_fixed_width_font_query(fixed_width_font_query);
Window::update_all_windows({});
Window::for_each_window({}, [](auto& window) {
Core::EventLoop::current().post_event(window, make<FontsChangeEvent>());
});
}
void WindowServerConnection::paint(i32 window_id, Gfx::IntSize const& window_size, Vector<Gfx::IntRect> const& rects)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<MultiPaintEvent>(rects, window_size));
}
void WindowServerConnection::window_resized(i32 window_id, Gfx::IntRect const& new_rect)
{
if (auto* window = Window::from_window_id(window_id)) {
Core::EventLoop::current().post_event(*window, make<ResizeEvent>(new_rect.size()));
}
}
void WindowServerConnection::window_activated(i32 window_id)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowBecameActive));
}
void WindowServerConnection::window_deactivated(i32 window_id)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowBecameInactive));
}
void WindowServerConnection::window_input_entered(i32 window_id)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowInputEntered));
}
void WindowServerConnection::window_input_left(i32 window_id)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowInputLeft));
}
void WindowServerConnection::window_close_request(i32 window_id)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowCloseRequest));
}
void WindowServerConnection::window_entered(i32 window_id)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowEntered));
}
void WindowServerConnection::window_left(i32 window_id)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowLeft));
}
static Action* action_for_key_event(Window& window, KeyEvent const& event)
{
if (event.key() == KeyCode::Key_Invalid)
return nullptr;
dbgln_if(KEYBOARD_SHORTCUTS_DEBUG, "Looking up action for {}", event.to_string());
for (auto* widget = window.focused_widget(); widget; widget = widget->parent_widget()) {
if (auto* action = widget->action_for_key_event(event)) {
dbgln_if(KEYBOARD_SHORTCUTS_DEBUG, " > Focused widget {} gave action: {}", *widget, action);
return action;
}
}
if (auto* action = window.action_for_key_event(event)) {
dbgln_if(KEYBOARD_SHORTCUTS_DEBUG, " > Asked window {}, got action: {}", window, action);
return action;
}
// NOTE: Application-global shortcuts are ignored while a modal window is up.
if (!window.is_modal()) {
if (auto* action = Application::the()->action_for_key_event(event)) {
dbgln_if(KEYBOARD_SHORTCUTS_DEBUG, " > Asked application, got action: {}", action);
return action;
}
}
return nullptr;
}
void WindowServerConnection::key_down(i32 window_id, u32 code_point, u32 key, u32 modifiers, u32 scancode)
{
auto* window = Window::from_window_id(window_id);
if (!window)
return;
auto key_event = make<KeyEvent>(Event::KeyDown, (KeyCode)key, modifiers, code_point, scancode);
if (auto* action = action_for_key_event(*window, *key_event)) {
if (action->is_enabled()) {
action->activate();
return;
}
if (action->swallow_key_event_when_disabled())
return;
}
bool focused_widget_accepts_emoji_input = window->focused_widget() && window->focused_widget()->accepts_emoji_input();
if (focused_widget_accepts_emoji_input && (modifiers == (Mod_Ctrl | Mod_Alt)) && key == Key_Space) {
auto emoji_input_dialog = EmojiInputDialog::construct(window);
if (emoji_input_dialog->exec() != EmojiInputDialog::ExecOK)
return;
key_event->m_key = Key_Invalid;
key_event->m_modifiers = 0;
Utf8View m_utf8_view(emoji_input_dialog->selected_emoji_text().characters());
u32 emoji_code_point = *m_utf8_view.begin();
key_event->m_code_point = emoji_code_point;
}
Core::EventLoop::current().post_event(*window, move(key_event));
}
void WindowServerConnection::key_up(i32 window_id, u32 code_point, u32 key, u32 modifiers, u32 scancode)
{
auto* window = Window::from_window_id(window_id);
if (!window)
return;
auto key_event = make<KeyEvent>(Event::KeyUp, (KeyCode)key, modifiers, code_point, scancode);
Core::EventLoop::current().post_event(*window, move(key_event));
}
static MouseButton to_mouse_button(u32 button)
{
switch (button) {
case 0:
return MouseButton::None;
case 1:
return MouseButton::Left;
case 2:
return MouseButton::Right;
case 4:
return MouseButton::Middle;
case 8:
return MouseButton::Back;
case 16:
return MouseButton::Forward;
default:
VERIFY_NOT_REACHED();
break;
}
}
void WindowServerConnection::mouse_down(i32 window_id, Gfx::IntPoint const& mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseDown, mouse_position, buttons, to_mouse_button(button), modifiers, wheel_delta));
}
void WindowServerConnection::mouse_up(i32 window_id, Gfx::IntPoint const& mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseUp, mouse_position, buttons, to_mouse_button(button), modifiers, wheel_delta));
}
void WindowServerConnection::mouse_move(i32 window_id, Gfx::IntPoint const& mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta, bool is_drag, Vector<String> const& mime_types)
{
if (auto* window = Window::from_window_id(window_id)) {
if (is_drag)
Core::EventLoop::current().post_event(*window, make<DragEvent>(Event::DragMove, mouse_position, mime_types));
else
Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseMove, mouse_position, buttons, to_mouse_button(button), modifiers, wheel_delta));
}
}
void WindowServerConnection::mouse_double_click(i32 window_id, Gfx::IntPoint const& mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseDoubleClick, mouse_position, buttons, to_mouse_button(button), modifiers, wheel_delta));
}
void WindowServerConnection::mouse_wheel(i32 window_id, Gfx::IntPoint const& mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta)
{
if (auto* window = Window::from_window_id(window_id))
Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseWheel, mouse_position, buttons, to_mouse_button(button), modifiers, wheel_delta));
}
void WindowServerConnection::menu_visibility_did_change(i32 menu_id, bool visible)
{
auto* menu = Menu::from_menu_id(menu_id);
if (!menu) {
dbgln("EventLoop received visibility change event for invalid menu ID {}", menu_id);
return;
}
menu->visibility_did_change({}, visible);
}
void WindowServerConnection::menu_item_activated(i32 menu_id, u32 identifier)
{
auto* menu = Menu::from_menu_id(menu_id);
if (!menu) {
dbgln("EventLoop received event for invalid menu ID {}", menu_id);
return;
}
if (auto* action = menu->action_at(identifier))
action->activate(menu);
}
void WindowServerConnection::menu_item_entered(i32 menu_id, u32 identifier)
{
auto* menu = Menu::from_menu_id(menu_id);
if (!menu) {
dbgln("WindowServerConnection received MenuItemEntered for invalid menu ID {}", menu_id);
return;
}
auto* action = menu->action_at(identifier);
if (!action)
return;
auto* app = Application::the();
if (!app)
return;
Core::EventLoop::current().post_event(*app, make<ActionEvent>(GUI::Event::ActionEnter, *action));
}
void WindowServerConnection::menu_item_left(i32 menu_id, u32 identifier)
{
auto* menu = Menu::from_menu_id(menu_id);
if (!menu) {
dbgln("WindowServerConnection received MenuItemLeft for invalid menu ID {}", menu_id);
return;
}
auto* action = menu->action_at(identifier);
if (!action)
return;
auto* app = Application::the();
if (!app)
return;
Core::EventLoop::current().post_event(*app, make<ActionEvent>(GUI::Event::ActionLeave, *action));
}
void WindowServerConnection::screen_rects_changed(Vector<Gfx::IntRect> const& rects, u32 main_screen_index, u32 virtual_desktop_rows, u32 virtual_desktop_columns)
{
Desktop::the().did_receive_screen_rects({}, rects, main_screen_index, virtual_desktop_rows, virtual_desktop_columns);
Window::for_each_window({}, [&](auto& window) {
Core::EventLoop::current().post_event(window, make<ScreenRectsChangeEvent>(rects, main_screen_index));
});
}
void WindowServerConnection::set_wallpaper_finished(bool)
{
// This is handled manually by Desktop::set_wallpaper().
}
void WindowServerConnection::drag_dropped(i32 window_id, Gfx::IntPoint const& mouse_position, String const& text, HashMap<String, ByteBuffer> const& mime_data)
{
if (auto* window = Window::from_window_id(window_id)) {
auto mime_data_obj = Core::MimeData::construct(mime_data);
Core::EventLoop::current().post_event(*window, make<DropEvent>(mouse_position, text, mime_data_obj));
}
}
void WindowServerConnection::drag_accepted()
{
DragOperation::notify_accepted({});
}
void WindowServerConnection::drag_cancelled()
{
DragOperation::notify_cancelled({});
Application::the()->notify_drag_cancelled({});
}
void WindowServerConnection::window_state_changed(i32 window_id, bool minimized, bool occluded)
{
if (auto* window = Window::from_window_id(window_id))
window->notify_state_changed({}, minimized, occluded);
}
void WindowServerConnection::display_link_notification()
{
if (m_display_link_notification_pending)
return;
m_display_link_notification_pending = true;
deferred_invoke([this](auto&) {
DisplayLink::notify({});
m_display_link_notification_pending = false;
});
}
void WindowServerConnection::ping()
{
async_pong();
}
}