mirror of
https://github.com/LadybirdBrowser/ladybird.git
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3ce80bec97
This allows windows/widgets to learn when something is being dragged over them. They can then repaint themselves somehow to indicate that they are willing to accept a drop. Currently this is piggybacking somewhat on the mouse event mechanism in WindowServer. I'm not sure that's the best design but it seemed easier to do it this way right now.
332 lines
13 KiB
C++
332 lines
13 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <LibGUI/Action.h>
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#include <LibGUI/Application.h>
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#include <LibGUI/Clipboard.h>
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#include <LibGUI/Desktop.h>
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#include <LibGUI/DragOperation.h>
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#include <LibGUI/Event.h>
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#include <LibGUI/Menu.h>
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#include <LibGUI/Widget.h>
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#include <LibGUI/Window.h>
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#include <LibGUI/WindowServerConnection.h>
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#include <LibGfx/Palette.h>
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#include <LibGfx/SystemTheme.h>
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//#define GEVENTLOOP_DEBUG
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namespace GUI {
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WindowServerConnection& WindowServerConnection::the()
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{
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static WindowServerConnection* s_connection = nullptr;
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if (!s_connection)
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s_connection = new WindowServerConnection;
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return *s_connection;
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}
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static void set_system_theme_from_shared_buffer_id(int id)
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{
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auto system_theme = SharedBuffer::create_from_shared_buffer_id(id);
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ASSERT(system_theme);
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Gfx::set_system_theme(*system_theme);
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Application::the().set_system_palette(*system_theme);
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}
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void WindowServerConnection::handshake()
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{
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auto response = send_sync<Messages::WindowServer::Greet>();
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set_my_client_id(response->client_id());
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set_system_theme_from_shared_buffer_id(response->system_theme_buffer_id());
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Desktop::the().did_receive_screen_rect({}, response->screen_rect());
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}
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void WindowServerConnection::handle(const Messages::WindowClient::UpdateSystemTheme& message)
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{
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set_system_theme_from_shared_buffer_id(message.system_theme_buffer_id());
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Window::update_all_windows({});
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}
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void WindowServerConnection::handle(const Messages::WindowClient::Paint& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d Paint\n", message.window_id());
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#endif
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<MultiPaintEvent>(message.rects(), message.window_size()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WindowResized& message)
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{
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if (auto* window = Window::from_window_id(message.window_id())) {
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Core::EventLoop::current().post_event(*window, make<ResizeEvent>(message.old_rect().size(), message.new_rect().size()));
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}
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WindowActivated& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("(%d) WID=%d WindowActivated\n", getpid(), message.window_id());
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#endif
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowBecameActive));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WindowDeactivated& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("(%d) WID=%d WindowDeactivated\n", getpid(), message.window_id());
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#endif
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowBecameInactive));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WindowCloseRequest& message)
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{
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowCloseRequest));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WindowEntered& message)
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{
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowEntered));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WindowLeft& message)
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{
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowLeft));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::KeyDown& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d KeyDown character=0x%02x\n", message.window_id(), message.character());
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#endif
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auto* window = Window::from_window_id(message.window_id());
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if (!window)
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return;
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auto key_event = make<KeyEvent>(Event::KeyDown, message.key(), message.modifiers());
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if (message.character() != '\0') {
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char ch = message.character();
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key_event->m_text = String(&ch, 1);
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}
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Action* action = nullptr;
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if (auto* focused_widget = window->focused_widget())
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action = focused_widget->action_for_key_event(*key_event);
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if (!action)
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action = window->action_for_key_event(*key_event);
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if (!action)
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action = Application::the().action_for_key_event(*key_event);
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if (action && action->is_enabled()) {
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action->activate();
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return;
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}
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Core::EventLoop::current().post_event(*window, move(key_event));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::KeyUp& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d KeyUp character=0x%02x\n", message.window_id(), message.character());
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#endif
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auto* window = Window::from_window_id(message.window_id());
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if (!window)
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return;
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auto key_event = make<KeyEvent>(Event::KeyUp, message.key(), message.modifiers());
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if (message.character() != '\0') {
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char ch = message.character();
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key_event->m_text = String(&ch, 1);
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}
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Core::EventLoop::current().post_event(*window, move(key_event));
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}
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MouseButton to_gmousebutton(u32 button)
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{
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switch (button) {
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case 0:
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return MouseButton::None;
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case 1:
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return MouseButton::Left;
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case 2:
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return MouseButton::Right;
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case 4:
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return MouseButton::Middle;
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default:
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ASSERT_NOT_REACHED();
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break;
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}
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}
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void WindowServerConnection::handle(const Messages::WindowClient::MouseDown& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d MouseDown %d,%d,%d\n", message.window_id(), message.mouse_position().x(), message.mouse_position().y(), message.wheel_delta();
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#endif
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseDown, message.mouse_position(), message.buttons(), to_gmousebutton(message.button()), message.modifiers(), message.wheel_delta()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::MouseUp& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d MouseUp %d,%d,%d\n", message.window_id(), message.mouse_position().x(), message.mouse_position().y(), message.wheel_delta();
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#endif
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseUp, message.mouse_position(), message.buttons(), to_gmousebutton(message.button()), message.modifiers(), message.wheel_delta()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::MouseMove& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d MouseMove %d,%d,%d\n", message.window_id(), message.mouse_position().x(), message.mouse_position().y(), message.wheel_delta();
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#endif
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if (auto* window = Window::from_window_id(message.window_id())) {
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if (message.is_drag())
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Core::EventLoop::current().post_event(*window, make<DragEvent>(Event::DragMove, message.mouse_position(), message.drag_data_type()));
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else
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Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseMove, message.mouse_position(), message.buttons(), to_gmousebutton(message.button()), message.modifiers(), message.wheel_delta()));
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}
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}
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void WindowServerConnection::handle(const Messages::WindowClient::MouseDoubleClick& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d MouseDoubleClick %d,%d,%d\n", message.window_id(), message.mouse_position().x(), message.mouse_position().y(), message.wheel_delta();
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#endif
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseDoubleClick, message.mouse_position(), message.buttons(), to_gmousebutton(message.button()), message.modifiers(), message.wheel_delta()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::MouseWheel& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("WID=%d MouseWheel %d,%d,%d\n", message.window_id(), message.mouse_position().x(), message.mouse_position().y(), message.wheel_delta();
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#endif
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<MouseEvent>(Event::MouseWheel, message.mouse_position(), message.buttons(), to_gmousebutton(message.button()), message.modifiers(), message.wheel_delta()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::MenuItemActivated& message)
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{
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auto* menu = Menu::from_menu_id(message.menu_id());
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if (!menu) {
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dbgprintf("EventLoop received event for invalid menu ID %d\n", message.menu_id());
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return;
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}
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if (auto* action = menu->action_at(message.identifier()))
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action->activate(menu);
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WM_WindowStateChanged& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("EventLoop: handle_wm_event: %d\n", (int)event.type);
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#endif
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if (auto* window = Window::from_window_id(message.wm_id()))
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Core::EventLoop::current().post_event(*window, make<WMWindowStateChangedEvent>(message.client_id(), message.window_id(), message.title(), message.rect(), message.is_active(), static_cast<WindowType>(message.window_type()), message.is_minimized()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WM_WindowRectChanged& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("EventLoop: handle_wm_event: %d\n", (int)event.type);
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#endif
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if (auto* window = Window::from_window_id(message.wm_id()))
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Core::EventLoop::current().post_event(*window, make<WMWindowRectChangedEvent>(message.client_id(), message.window_id(), message.rect()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WM_WindowIconBitmapChanged& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("EventLoop: handle_wm_event: %d\n", (int)event.type);
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#endif
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if (auto* window = Window::from_window_id(message.wm_id()))
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Core::EventLoop::current().post_event(*window, make<WMWindowIconBitmapChangedEvent>(message.client_id(), message.window_id(), message.icon_buffer_id(), message.icon_size()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WM_WindowRemoved& message)
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{
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#ifdef GEVENTLOOP_DEBUG
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dbgprintf("EventLoop: handle_wm_event: %d\n", (int)event.type);
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#endif
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if (auto* window = Window::from_window_id(message.wm_id()))
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Core::EventLoop::current().post_event(*window, make<WMWindowRemovedEvent>(message.client_id(), message.window_id()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::ScreenRectChanged& message)
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{
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Desktop::the().did_receive_screen_rect({}, message.rect());
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}
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void WindowServerConnection::handle(const Messages::WindowClient::ClipboardContentsChanged& message)
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{
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Clipboard::the().did_receive_clipboard_contents_changed({}, message.content_type());
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}
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void WindowServerConnection::handle(const Messages::WindowClient::AsyncSetWallpaperFinished&)
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{
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// This is handled manually by Desktop::set_wallpaper().
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}
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void WindowServerConnection::handle(const Messages::WindowClient::DragDropped& message)
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{
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if (auto* window = Window::from_window_id(message.window_id()))
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Core::EventLoop::current().post_event(*window, make<DropEvent>(message.mouse_position(), message.text(), message.data_type(), message.data()));
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}
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void WindowServerConnection::handle(const Messages::WindowClient::DragAccepted&)
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{
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DragOperation::notify_accepted({});
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}
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void WindowServerConnection::handle(const Messages::WindowClient::DragCancelled&)
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{
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DragOperation::notify_cancelled({});
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}
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void WindowServerConnection::handle(const Messages::WindowClient::WindowStateChanged& message)
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{
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if (auto* window = Window::from_window_id(message.window_id()))
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window->notify_state_changed({}, message.minimized(), message.occluded());
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}
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}
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