mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 04:28:13 +00:00
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.
417 lines
13 KiB
C++
417 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 "Window.h"
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#include "ClientConnection.h"
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#include "Event.h"
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#include "EventLoop.h"
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#include "Screen.h"
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#include "WindowClientEndpoint.h"
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#include "WindowManager.h"
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namespace WindowServer {
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static String default_window_icon_path()
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{
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return "/res/icons/16x16/window.png";
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}
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static Gfx::Bitmap& default_window_icon()
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{
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static Gfx::Bitmap* s_icon;
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if (!s_icon)
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s_icon = Gfx::Bitmap::load_from_file(default_window_icon_path()).leak_ref();
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return *s_icon;
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}
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Window::Window(Core::Object& parent, WindowType type)
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: Core::Object(&parent)
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, m_type(type)
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, m_icon(default_window_icon())
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, m_frame(*this)
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{
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WindowManager::the().add_window(*this);
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}
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Window::Window(ClientConnection& client, WindowType window_type, int window_id, bool modal, bool minimizable, bool resizable, bool fullscreen)
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: Core::Object(&client)
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, m_client(&client)
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, m_type(window_type)
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, m_modal(modal)
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, m_minimizable(minimizable)
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, m_resizable(resizable)
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, m_fullscreen(fullscreen)
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, m_window_id(window_id)
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, m_client_id(client.client_id())
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, m_icon(default_window_icon())
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, m_frame(*this)
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{
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// FIXME: This should not be hard-coded here.
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if (m_type == WindowType::Taskbar) {
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m_wm_event_mask = WMEventMask::WindowStateChanges | WMEventMask::WindowRemovals | WMEventMask::WindowIconChanges;
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m_listens_to_wm_events = true;
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}
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WindowManager::the().add_window(*this);
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}
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Window::~Window()
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{
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// Detach from client at the start of teardown since we don't want
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// to confuse things by trying to send messages to it.
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m_client = nullptr;
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WindowManager::the().remove_window(*this);
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}
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void Window::set_title(const String& title)
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{
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if (m_title == title)
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return;
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m_title = title;
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WindowManager::the().notify_title_changed(*this);
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}
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void Window::set_rect(const Gfx::Rect& rect)
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{
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ASSERT(!rect.is_empty());
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Gfx::Rect old_rect;
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if (m_rect == rect)
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return;
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old_rect = m_rect;
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m_rect = rect;
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if (!m_client && (!m_backing_store || old_rect.size() != rect.size())) {
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m_backing_store = Gfx::Bitmap::create(Gfx::Bitmap::Format::RGB32, m_rect.size());
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}
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m_frame.notify_window_rect_changed(old_rect, rect);
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}
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void Window::handle_mouse_event(const MouseEvent& event)
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{
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set_automatic_cursor_tracking_enabled(event.buttons() != 0);
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switch (event.type()) {
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case Event::MouseMove:
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m_client->post_message(Messages::WindowClient::MouseMove(m_window_id, event.position(), (u32)event.button(), event.buttons(), event.modifiers(), event.wheel_delta(), event.is_drag(), event.drag_data_type()));
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break;
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case Event::MouseDown:
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m_client->post_message(Messages::WindowClient::MouseDown(m_window_id, event.position(), (u32)event.button(), event.buttons(), event.modifiers(), event.wheel_delta()));
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break;
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case Event::MouseDoubleClick:
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m_client->post_message(Messages::WindowClient::MouseDoubleClick(m_window_id, event.position(), (u32)event.button(), event.buttons(), event.modifiers(), event.wheel_delta()));
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break;
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case Event::MouseUp:
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m_client->post_message(Messages::WindowClient::MouseUp(m_window_id, event.position(), (u32)event.button(), event.buttons(), event.modifiers(), event.wheel_delta()));
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break;
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case Event::MouseWheel:
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m_client->post_message(Messages::WindowClient::MouseWheel(m_window_id, event.position(), (u32)event.button(), event.buttons(), event.modifiers(), event.wheel_delta()));
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break;
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default:
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ASSERT_NOT_REACHED();
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}
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}
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void Window::update_menu_item_text(PopupMenuItem item)
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{
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if (m_window_menu) {
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m_window_menu->item((int)item).set_text(item == PopupMenuItem::Minimize ? (m_minimized ? "Unminimize" : "Minimize") : (m_maximized ? "Restore" : "Maximize"));
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m_window_menu->redraw();
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}
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}
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void Window::update_menu_item_enabled(PopupMenuItem item)
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{
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if (m_window_menu) {
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m_window_menu->item((int)item).set_enabled(item == PopupMenuItem::Minimize ? m_minimizable : m_resizable);
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m_window_menu->redraw();
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}
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}
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void Window::set_minimized(bool minimized)
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{
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if (m_minimized == minimized)
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return;
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if (minimized && !m_minimizable)
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return;
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if (is_blocked_by_modal_window())
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return;
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m_minimized = minimized;
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update_menu_item_text(PopupMenuItem::Minimize);
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start_minimize_animation();
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if (!minimized)
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request_update({ {}, size() });
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invalidate();
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WindowManager::the().notify_minimization_state_changed(*this);
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}
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void Window::set_minimizable(bool minimizable)
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{
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if (m_minimizable == minimizable)
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return;
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m_minimizable = minimizable;
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update_menu_item_enabled(PopupMenuItem::Minimize);
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// TODO: Hide/show (or alternatively change enabled state of) window minimize button dynamically depending on value of m_minimizable
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}
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void Window::set_opacity(float opacity)
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{
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if (m_opacity == opacity)
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return;
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m_opacity = opacity;
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WindowManager::the().notify_opacity_changed(*this);
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}
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void Window::set_occluded(bool occluded)
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{
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if (m_occluded == occluded)
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return;
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m_occluded = occluded;
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WindowManager::the().notify_occlusion_state_changed(*this);
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}
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void Window::set_maximized(bool maximized)
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{
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if (m_maximized == maximized)
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return;
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if (maximized && !is_resizable())
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return;
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if (is_blocked_by_modal_window())
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return;
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set_tiled(WindowTileType::None);
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m_maximized = maximized;
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update_menu_item_text(PopupMenuItem::Maximize);
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auto old_rect = m_rect;
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if (maximized) {
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m_unmaximized_rect = m_rect;
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set_rect(WindowManager::the().maximized_window_rect(*this));
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} else {
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set_rect(m_unmaximized_rect);
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}
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m_frame.did_set_maximized({}, maximized);
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Core::EventLoop::current().post_event(*this, make<ResizeEvent>(old_rect, m_rect));
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}
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void Window::set_resizable(bool resizable)
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{
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if (m_resizable == resizable)
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return;
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m_resizable = resizable;
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update_menu_item_enabled(PopupMenuItem::Maximize);
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// TODO: Hide/show (or alternatively change enabled state of) window maximize button dynamically depending on value of is_resizable()
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}
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void Window::event(Core::Event& event)
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{
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if (!m_client) {
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ASSERT(parent());
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event.ignore();
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return;
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}
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if (is_blocked_by_modal_window())
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return;
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if (static_cast<Event&>(event).is_mouse_event())
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return handle_mouse_event(static_cast<const MouseEvent&>(event));
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switch (event.type()) {
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case Event::WindowEntered:
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m_client->post_message(Messages::WindowClient::WindowEntered(m_window_id));
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break;
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case Event::WindowLeft:
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m_client->post_message(Messages::WindowClient::WindowLeft(m_window_id));
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break;
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case Event::KeyDown:
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m_client->post_message(
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Messages::WindowClient::KeyDown(m_window_id,
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(u8) static_cast<const KeyEvent&>(event).character(),
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(u32) static_cast<const KeyEvent&>(event).key(),
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static_cast<const KeyEvent&>(event).modifiers()));
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break;
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case Event::KeyUp:
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m_client->post_message(
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Messages::WindowClient::KeyUp(m_window_id,
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(u8) static_cast<const KeyEvent&>(event).character(),
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(u32) static_cast<const KeyEvent&>(event).key(),
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static_cast<const KeyEvent&>(event).modifiers()));
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break;
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case Event::WindowActivated:
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m_client->post_message(Messages::WindowClient::WindowActivated(m_window_id));
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break;
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case Event::WindowDeactivated:
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m_client->post_message(Messages::WindowClient::WindowDeactivated(m_window_id));
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break;
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case Event::WindowCloseRequest:
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m_client->post_message(Messages::WindowClient::WindowCloseRequest(m_window_id));
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break;
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case Event::WindowResized:
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m_client->post_message(
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Messages::WindowClient::WindowResized(
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m_window_id,
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static_cast<const ResizeEvent&>(event).old_rect(),
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static_cast<const ResizeEvent&>(event).rect()));
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break;
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default:
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break;
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}
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}
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void Window::set_global_cursor_tracking_enabled(bool enabled)
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{
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m_global_cursor_tracking_enabled = enabled;
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}
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void Window::set_visible(bool b)
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{
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if (m_visible == b)
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return;
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m_visible = b;
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invalidate();
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}
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void Window::invalidate()
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{
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WindowManager::the().invalidate(*this);
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}
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void Window::invalidate(const Gfx::Rect& rect)
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{
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WindowManager::the().invalidate(*this, rect);
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}
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bool Window::is_active() const
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{
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return WindowManager::the().active_window() == this;
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}
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bool Window::is_blocked_by_modal_window() const
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{
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return !is_modal() && client() && client()->is_showing_modal_window();
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}
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void Window::set_default_icon()
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{
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m_icon = default_window_icon();
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}
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void Window::request_update(const Gfx::Rect& rect)
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{
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if (m_pending_paint_rects.is_empty()) {
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deferred_invoke([this](auto&) {
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client()->post_paint_message(*this);
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});
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}
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m_pending_paint_rects.add(rect);
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}
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void Window::popup_window_menu(const Gfx::Point& position)
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{
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if (!m_window_menu) {
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m_window_menu = Menu::construct(nullptr, -1, "(Window Menu)");
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m_window_menu->set_window_menu_of(*this);
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m_window_menu->add_item(make<MenuItem>(*m_window_menu, 1, m_minimized ? "Unminimize" : "Minimize"));
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m_window_menu->add_item(make<MenuItem>(*m_window_menu, 2, m_maximized ? "Restore" : "Maximize"));
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m_window_menu->add_item(make<MenuItem>(*m_window_menu, MenuItem::Type::Separator));
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m_window_menu->add_item(make<MenuItem>(*m_window_menu, 3, "Close"));
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m_window_menu->item((int)PopupMenuItem::Minimize).set_enabled(m_minimizable);
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m_window_menu->item((int)PopupMenuItem::Maximize).set_enabled(m_resizable);
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m_window_menu->on_item_activation = [&](auto& item) {
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switch (item.identifier()) {
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case 1:
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set_minimized(!m_minimized);
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if (!m_minimized)
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WindowManager::the().move_to_front_and_make_active(*this);
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break;
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case 2:
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set_maximized(!m_maximized);
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if (m_minimized)
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set_minimized(false);
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WindowManager::the().move_to_front_and_make_active(*this);
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break;
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case 3:
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request_close();
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break;
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}
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};
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}
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m_window_menu->popup(position);
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}
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void Window::request_close()
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{
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Event close_request(Event::WindowCloseRequest);
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event(close_request);
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}
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void Window::set_fullscreen(bool fullscreen)
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{
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if (m_fullscreen == fullscreen)
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return;
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m_fullscreen = fullscreen;
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Gfx::Rect new_window_rect = m_rect;
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if (m_fullscreen) {
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m_saved_nonfullscreen_rect = m_rect;
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new_window_rect = Screen::the().rect();
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} else if (!m_saved_nonfullscreen_rect.is_empty()) {
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new_window_rect = m_saved_nonfullscreen_rect;
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}
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Core::EventLoop::current().post_event(*this, make<ResizeEvent>(m_rect, new_window_rect));
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set_rect(new_window_rect);
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}
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void Window::set_tiled(WindowTileType tiled)
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{
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if (m_tiled == tiled)
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return;
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m_tiled = tiled;
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auto old_rect = m_rect;
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int frame_width = (m_frame.rect().width() - m_rect.width()) / 2;
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switch (tiled) {
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case WindowTileType::None:
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set_rect(m_untiled_rect);
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break;
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case WindowTileType::Left:
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m_untiled_rect = m_rect;
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set_rect(0,
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WindowManager::the().maximized_window_rect(*this).y(),
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Screen::the().width() / 2 - frame_width,
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WindowManager::the().maximized_window_rect(*this).height());
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break;
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case WindowTileType::Right:
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m_untiled_rect = m_rect;
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set_rect(Screen::the().width() / 2 + frame_width,
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WindowManager::the().maximized_window_rect(*this).y(),
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Screen::the().width() / 2 - frame_width,
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WindowManager::the().maximized_window_rect(*this).height());
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break;
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}
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Core::EventLoop::current().post_event(*this, make<ResizeEvent>(old_rect, m_rect));
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}
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}
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