fc_client.cpp

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/***********************************************************************
 Freeciv - Copyright (C) 1996-2005 - Freeciv Development Team
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
***********************************************************************/
 
#ifdef HAVE_CONFIG_H
#include <fc_config.h>
#endif
 
// Qt
#include <QApplication>
#include <QComboBox>
#include <QFormLayout>
#include <QLineEdit>
#include <QMainWindow>
#include <QPainter>
#include <QResizeEvent>
#include <QScrollBar>
#include <QSettings>
#include <QSocketNotifier>
#include <QSpinBox>
#include <QStackedLayout>
#include <QStandardPaths>
#include <QStatusBar>
#include <QStyleFactory>
#include <QTabBar>
#include <QTextBlock>
 
#ifdef FC_QT5_MODE
#include <QTextCodec>
#endif // FC_QT5_MODE
 
#include <QTextEdit>
 
// common
#include "game.h"
 
// client
#include "connectdlg_common.h"
 
// gui-qt
#include "fc_client.h"
#include "fonts.h"
#include "gui_main.h"
#include "optiondlg.h"
#include "sidebar.h"
#include "sprite.h"
 
fc_icons* fc_icons::m_instance = 0;
fc_font* fc_font::m_instance = 0;
extern "C" {
  bool get_turn_done_button_state();
  void real_science_report_dialog_update(void*);
}
extern void write_shortcuts();
 
QString current_theme;
 
/************************************************************************/
fc_client::fc_client() : QMainWindow()
{
  QString wtitle;
 
#ifdef FC_QT5_MODE
  QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));
#endif // FC_QT5_MODE
  main_wdg = NULL;
  connect_lan = NULL;
  connect_metaserver = NULL;
  central_layout = NULL;
  output_window = NULL;
  scenarios_view = NULL;
  connect_host_edit = NULL;
  connect_port_edit = NULL;
  connect_login_edit = NULL;
  connect_password_edit = NULL;
  connect_confirm_password_edit = NULL;
  button = NULL;
  button_box = NULL;
  server_notifier = NULL;
  chat_line = NULL;
  lan_widget = NULL;
  wan_widget = NULL;
  info_widget = NULL;
  saves_load = NULL;
  scenarios_load = NULL;
  meta_scan_timer = NULL;
  lan_scan_timer = NULL;
  status_bar = NULL;
  status_bar_label = NULL;
  menu_bar = NULL;
  mapview_wdg = NULL;
  sidebar_wdg = nullptr;
  msgwdg = NULL;
  infotab = NULL;
  central_wdg = NULL;
  game_tab_widget = NULL;
  start_players_tree = NULL;
  unit_sel = NULL;
  info_tile_wdg = nullptr;
  opened_dialog = NULL;
  current_file = "";
  status_bar_queue.clear();
  quitting = false;
  pre_vote = NULL;
  x_vote = NULL;
  gtd = NULL;
  update_info_timer = nullptr;
  unitinfo_wdg = nullptr;
  battlelog_wdg = nullptr;
  interface_locked = false;
  map_scale = 1.0f;
  map_font_scale = true;
  for (int i = 0; i <= PAGE_GAME; i++) {
    pages_layout[i] = NULL;
    pages[i] = NULL;
  }
 
  wtitle = _("Freeciv (%1)");
  wtitle = wtitle.arg(
#if FC_QT5_MODE
                      "Qt5"
#else  // FC_QT5_MODE
                      "Qt6"
#endif // FC_QT5_MODE
                      );
 
  setWindowTitle(wtitle);
 
  init();
}
 
/************************************************************************/
void fc_client::init()
{
  fc_font::instance()->init_fonts();
  read_settings();
  QApplication::setFont(*fc_font::instance()->get_font(fonts::default_font));
  QString path;
  central_wdg = new QWidget;
  central_layout = new QStackedLayout;
 
  // General part not related to any single page
  menu_bar = new mr_menu();
  if (!gui_options.gui_qt_show_titlebar) {
    corner_wid = new fc_corner(this);
    menu_bar->setCornerWidget(corner_wid);
  }
  setMenuBar(menu_bar);
  status_bar = statusBar();
  status_bar_label = new QLabel;
  status_bar_label->setAlignment(Qt::AlignCenter);
  status_bar->addWidget(status_bar_label, 1);
  set_status_bar(_("Welcome to Freeciv"));
  create_cursors();
 
  // PAGE_MAIN
  pages[PAGE_MAIN] = new QWidget(central_wdg);
  page = PAGE_MAIN;
  create_main_page();
 
  // PAGE_START
  pages[PAGE_START] = new QWidget(central_wdg);
  create_start_page();
 
  // PAGE_SCENARIO
  pages[PAGE_SCENARIO] = new QWidget(central_wdg);
  create_scenario_page();
 
  // PAGE_LOAD
  pages[PAGE_LOAD] = new QWidget(central_wdg);
  create_load_page();
 
  // PAGE_NETWORK
  pages[PAGE_NETWORK] = new QWidget(central_wdg);
  create_network_page();
  pages[PAGE_NETWORK]->setVisible(false);
 
  // PAGE_GAME
  gui_options.gui_qt_allied_chat_only = true;
  path = QStandardPaths::writableLocation(QStandardPaths::ConfigLocation);
  if (!path.isEmpty()) {
    QSettings::setPath(QSettings::NativeFormat, QSettings::UserScope, path);
  }
  pages[PAGE_GAME] = new QWidget(central_wdg);
  init_mapcanvas_and_overview();
  create_game_page();
  
  pages[PAGE_GAME + 1] = new QWidget(central_wdg);
  create_loading_page();
 
  pages_layout[PAGE_GAME]->setContentsMargins(0, 0, 0, 0);
 
  pages[PAGE_MAIN]->setLayout(pages_layout[PAGE_MAIN]);
  pages[PAGE_NETWORK]->setLayout(pages_layout[PAGE_NETWORK]);
  pages[PAGE_LOAD]->setLayout(pages_layout[PAGE_LOAD]);
  pages[PAGE_SCENARIO]->setLayout(pages_layout[PAGE_SCENARIO]);
  pages[PAGE_START]->setLayout(pages_layout[PAGE_START]);
  pages[PAGE_GAME]->setLayout(pages_layout[PAGE_GAME]);
  pages[PAGE_GAME + 1]->setLayout(pages_layout[PAGE_GAME + 1]);
 
  central_layout->addWidget(pages[PAGE_MAIN]);
  central_layout->addWidget(pages[PAGE_NETWORK]);
  central_layout->addWidget(pages[PAGE_LOAD]);
  central_layout->addWidget(pages[PAGE_SCENARIO]);
  central_layout->addWidget(pages[PAGE_START]);
  central_layout->addWidget(pages[PAGE_GAME]);
  central_layout->addWidget(pages[PAGE_GAME + 1]);
 
  central_wdg->setLayout(central_layout);
  setCentralWidget(central_wdg);
 
  resize(pages[PAGE_MAIN]->minimumSizeHint());
  setVisible(true);
 
  game_tab_widget->init();
  chat_listener::listen();
 
  QPixmapCache::setCacheLimit(80000);
}
 
/************************************************************************/
fc_client::~fc_client()
{
  status_bar_queue.clear();
  if (fc_shortcuts::sc()) {
    delete fc_shortcuts::sc();
  }
  delete_cursors();
}
 
 
/************************************************************************/
void fc_client::fc_main(QApplication *qapp)
{
  qRegisterMetaType<QTextCursor>("QTextCursor");
  qRegisterMetaType<QTextBlock>("QTextBlock");
  fc_allocate_ow_mutex();
  real_output_window_append(_("This is Qt-client for Freeciv."), NULL, -1);
  fc_release_ow_mutex();
  chat_welcome_message(true);
 
  set_client_state(C_S_DISCONNECTED);
 
  startTimer(TIMER_INTERVAL);
  connect(qapp, &QCoreApplication::aboutToQuit, this, &fc_client::closing);
  qapp->exec();
 
  free_mapcanvas_and_overview();
  tileset_free_tiles(tileset);
}
 
/************************************************************************/
bool fc_client::is_closing()
{
  return quitting;
}
 
/************************************************************************/
void fc_client::closing()
{
  quitting = true;
}
 
/************************************************************************/
void fc_client::send_fake_chat_message(const QString &message)
{
  send_chat_message(message);
}
 
/************************************************************************/
void fc_client::chat_message_received(const QString &message,
                                      const struct text_tag_list *tags)
{
  QTextCursor cursor;
  QColor col = output_window->palette().color(QPalette::Text);
  QString str = apply_tags(message, tags, col);
 
  if (output_window != NULL) {
    output_window->append(str);
    output_window->verticalScrollBar()->setSliderPosition(
                              output_window->verticalScrollBar()->maximum());
  }
}
 
/************************************************************************/
bool fc_client::chat_active_on_page(enum client_pages check)
{
  if (check == PAGE_START || check == PAGE_GAME) {
    return true;
  }
 
  return false;
}
 
/************************************************************************/
void fc_client::switch_page(int new_pg)
{
  char buf[256];
  enum client_pages new_page;
  int i_page;
 
  new_page = static_cast<client_pages>(new_pg);
 
  if ((new_page == PAGE_SCENARIO || new_page == PAGE_LOAD)
       && !is_server_running()) {
    current_file = "";
    client_start_server_and_set_page(new_page);
    return;
  }
 
  if (page == PAGE_NETWORK) {
    destroy_server_scans();
  }
  menuBar()->setVisible(false);
  if (status_bar != nullptr) {
    status_bar->setVisible(true);
  }
  QApplication::alert(gui()->central_wdg);
  central_layout->setCurrentWidget(pages[new_pg]);
  page = new_page;
  i_page = new_page;
  switch (i_page) {
  case PAGE_MAIN:
    break;
  case PAGE_START:
    pre_vote->hide();
    voteinfo_gui_update();
    break;
  case PAGE_LOAD:
    update_load_page();
    break;
  case PAGE_GAME:
    if (!gui_options.gui_qt_show_titlebar) {
      setWindowFlags(Qt::Window | Qt::CustomizeWindowHint);
    }
    showMaximized();
    // For MS Windows, it might ignore first
    showMaximized();
    gui()->infotab->chtwdg->update_widgets();
    status_bar->setVisible(false);
 
    if (gui_options.gui_qt_fullscreen) {
      apply_fullscreen();
    }
 
    menuBar()->setVisible(true);
    mapview_wdg->setFocus();
    center_on_something();
    voteinfo_gui_update();
    update_info_label();
    minimapview_wdg->reset();
    overview_size_changed();
    update_sidebar_tooltips();
    real_science_report_dialog_update(nullptr);
    show_new_turn_info();
    break;
  case PAGE_SCENARIO:
    update_scenarios_page();
    break;
  case PAGE_NETWORK:
    update_network_lists();
    set_connection_state(LOGIN_TYPE);
    connect_host_edit->setText(server_host);
    fc_snprintf(buf, sizeof(buf), "%d", server_port);
    connect_port_edit->setText(buf);
    connect_login_edit->setText(user_name);
    connect_password_edit->setDisabled(true);
    connect_confirm_password_edit->setDisabled(true);
    break;
  case (PAGE_GAME + 1):
    break;
  default:
    if (client.conn.used) {
      disconnect_from_server(TRUE);
    }
    set_client_page(PAGE_MAIN);
    break;
  }
}
 
/************************************************************************/
void fc_client::apply_fullscreen()
{
  if (gui_options.gui_qt_fullscreen) {
    gui()->showFullScreen();
    gui()->game_tab_widget->showFullScreen();
  } else {
    // FIXME: Doesn't return properly, probably something with sidebar
    gui()->showNormal();
    gui()->game_tab_widget->showNormal();
  }
}
 
/************************************************************************/
enum client_pages fc_client::current_page()
{
  return page;
}
 
/************************************************************************/
void fc_client::add_server_source(int sock)
{
  server_notifier = new QSocketNotifier(sock, QSocketNotifier::Read);
 
  connect(server_notifier, &QSocketNotifier::activated, this, 
          &fc_client::server_input);
}
 
/************************************************************************/
void fc_client::update_fonts()
{
  sidebar_wdg->update_fonts();
}
 
/************************************************************************/
bool fc_client::event(QEvent *event)
{
  if (event->type() == QEvent::User) {
    version_message_event vmevt =
        dynamic_cast<version_message_event&>(*event);
    set_status_bar(vmevt.get_message());
    return true;
  } else {
    return QMainWindow::event(event);
  }
}
 
/************************************************************************/
void fc_client::closeEvent(QCloseEvent *event)
{
  if (!is_client_quitting()) {
    popup_quit_dialog();
    event->ignore();
  }
}
 
/************************************************************************/
void fc_client::remove_server_source()
{
  server_notifier->deleteLater();
}
 
/************************************************************************/
void fc_client::server_input(int sock)
{
  server_notifier->setEnabled(false);
  input_from_server(sock);
  server_notifier->setEnabled(true);
}
 
/************************************************************************/
void fc_client::timerEvent(QTimerEvent *event)
{
  // Prevent current timer from repeating with possibly wrong interval
  killTimer(event->timerId());
 
  // Call timer callback in client common code and
  // start new timer with correct interval
  startTimer(real_timer_callback() * 1000);
}
 
/************************************************************************/
void fc_client::quit()
{
  QApplication *qapp = current_app();
 
  if (qapp != nullptr) {
    qapp->quit();
  }
}
 
/************************************************************************/
void fc_client::slot_disconnect()
{
  if (client.conn.used) {
    disconnect_from_server(TRUE);
  }
 
  switch_page(PAGE_MAIN);
}
 
/************************************************************************/
void fc_client::slot_pregame_observe()
{
  if (client_is_observer() || client_is_global_observer()) {
    if (game.info.is_new_game) {
      send_chat("/take -");
    } else {
      send_chat("/detach");
    }
    obs_button->setText(_("Don't Observe"));
  } else {
    send_chat("/observe");
    obs_button->setText(_("Observe"));
  }
}
 
/************************************************************************/
void fc_client::slot_pregame_start()
{
  if (can_client_control()) {
    dsend_packet_player_ready(&client.conn,
                              player_number(client_player()),
                              !client_player()->is_ready);
  } else {
    dsend_packet_player_ready(&client.conn, 0, TRUE);
  }
}
 
/****************************************************************************
  Deletes cursors
****************************************************************************/
void fc_client::delete_cursors(void)
{
  int frame;
  int cursor;
 
  for (cursor = 0; cursor < CURSOR_LAST; cursor++) {
    for (frame = 0; frame < NUM_CURSOR_FRAMES; frame++) {
      delete fc_cursors[cursor][frame];
    }
  }
}
 
 
/************************************************************************/
void fc_client::gimme_place(QWidget *widget, QString str)
{
  QString x;
 
  x = opened_repo_dlgs.key(widget);
 
  if (x.isEmpty()) {
    opened_repo_dlgs.insert(str, widget);
    return;
  }
  log_error("Failed to find place for new tab widget");
  return;
}
 
/************************************************************************/
bool fc_client::is_repo_dlg_open(QString str)
{
  QWidget *w;
 
  w = opened_repo_dlgs.value(str);
 
  if (w == NULL) {
    return false;
  }
 
  return true;
}
 
/************************************************************************/
int fc_client::gimme_index_of(QString str)
{
  int i;
  QWidget *w;
 
  if (str == "MAP") {
    return 0;
  }
 
  w = opened_repo_dlgs.value(str);
  i = game_tab_widget->indexOf(w);
  return i;
}
 
/************************************************************************/
void fc_client::read_settings()
{
  // This can't be shared between freeciv versions as the content
  // might be incompatible.
  QString sname = "freeciv-qt-client-set-"
    + QString::number(MAJOR_NEW_OPTION_FILE_NAME) + "."
    + QString::number(MINOR_NEW_OPTION_FILE_NAME);
  QSettings s(QSettings::IniFormat, QSettings::UserScope,
              sname);
 
  if (s.contains("Chat-fx-size")) {
    qt_settings.chat_fwidth = s.value("Chat-fx-size").toFloat();
  } else {
    qt_settings.chat_fwidth = 0.2;
  }
  if (s.contains("Chat-fy-size")) {
    qt_settings.chat_fheight = s.value("Chat-fy-size").toFloat();
  } else {
    qt_settings.chat_fheight = 0.4;
  }
  if (s.contains("Chat-fx-pos")) {
    qt_settings.chat_fx_pos = s.value("Chat-fx-pos").toFloat();
  } else {
    qt_settings.chat_fx_pos = 0.0;
  }
  if (s.contains("Chat-fy-pos")) {
    qt_settings.chat_fy_pos = s.value("Chat-fy-pos").toFloat();
  } else {
    qt_settings.chat_fy_pos = 0.6;
  }
  if (s.contains("unit_fx")) {
    qt_settings.unit_info_pos_fx = s.value("unit_fx").toFloat();
  } else {
    qt_settings.unit_info_pos_fx = 0.33;
  }
  if (s.contains("unit_fy")) {
    qt_settings.unit_info_pos_fy = s.value("unit_fy").toFloat();
  } else {
    qt_settings.unit_info_pos_fy = 0.88;
  }
  if (s.contains("minimap_x")) {
    qt_settings.minimap_x = s.value("minimap_x").toFloat();
  } else {
    qt_settings.minimap_x = 0.84;
  }
  if (s.contains("minimap_y")) {
    qt_settings.minimap_y = s.value("minimap_y").toFloat();
  } else {
    qt_settings.minimap_y = 0.79;
  }
  if (s.contains("minimap_width")) {
    qt_settings.minimap_width = s.value("minimap_width").toFloat();
  } else {
    qt_settings.minimap_width = 0.15;
  }
  if (s.contains("minimap_height")) {
    qt_settings.minimap_height = s.value("minimap_height").toFloat();
  } else {
    qt_settings.minimap_height = 0.2;
  }
  if (s.contains("battlelog_scale")) {
    qt_settings.battlelog_scale = s.value("battlelog_scale").toFloat();
  } else {
    qt_settings.battlelog_scale = 1;
  }
 
  if (s.contains("City-dialog")) {
    qt_settings.city_geometry = s.value("City-dialog").toByteArray();
  }
  if (s.contains("splitter1")) {
    qt_settings.city_splitter1 = s.value("splitter1").toByteArray();
  }
  if (s.contains("splitter2")) {
    qt_settings.city_splitter2 = s.value("splitter2").toByteArray();
  }
  if (s.contains("splitter3")) {
    qt_settings.city_splitter3 = s.value("splitter3").toByteArray();
  }
  if (s.contains("help-dialog")) {
    qt_settings.help_geometry = s.value("help-dialog").toByteArray();
  }
  if (s.contains("help_splitter1")) {
    qt_settings.help_splitter1 = s.value("help_splitter1").toByteArray();
  }
  if (s.contains("opt-client-dialog")) {
    qt_settings.options_client_geometry = s.value("opt-client-dialog").toByteArray();
  }
  if (s.contains("opt-server-dialog")) {
    qt_settings.options_server_geometry = s.value("opt-server-dialog").toByteArray();
  }
  if (s.contains("new_turn_text")) {
    qt_settings.show_new_turn_text = s.value("new_turn_text").toBool();
  } else {
    qt_settings.show_new_turn_text = true;
  }
  if (s.contains("show_battle_log")) {
    qt_settings.show_battle_log = s.value("show_battle_log").toBool();
  } else {
    qt_settings.show_battle_log = false;
  }
  if (s.contains("battlelog_x")) {
    qt_settings.battlelog_x = s.value("battlelog_x").toFloat();
  } else {
    qt_settings.battlelog_x = 0.0;
  }
  if (s.contains("minimap_y")) {
    qt_settings.battlelog_y = s.value("battlelog_y").toFloat();
  } else {
    qt_settings.battlelog_y = 0.0;
  }
  qt_settings.player_repo_sort_col = -1;
  qt_settings.city_repo_sort_col = -1;
 
  if (qt_settings.chat_fx_pos < 0 || qt_settings.chat_fx_pos >= 1) {
    qt_settings.chat_fx_pos = 0.0;
  }
  if (qt_settings.chat_fy_pos >= 1 || qt_settings.chat_fy_pos < 0) {
    qt_settings.chat_fy_pos = 0.6;
  }
  if (qt_settings.chat_fwidth < 0.05 || qt_settings.chat_fwidth > 0.9) {
    qt_settings.chat_fwidth = 0.2;
  }
  if (qt_settings.chat_fheight < 0.05 || qt_settings.chat_fheight > 0.9) {
    qt_settings.chat_fheight = 0.33;
  }
  if (qt_settings.battlelog_x < 0.0) {
    qt_settings.battlelog_x = 0.33;
  }
  if (qt_settings.battlelog_y < 0.0) {
    qt_settings.battlelog_y = 0.0;
  }
  if (qt_settings.battlelog_scale > 5.0) {
    qt_settings.battlelog_y = 5.0;
  }
  if (qt_settings.minimap_x < 0 || qt_settings.minimap_x > 1) {
    qt_settings.chat_fx_pos = 0.84;
  }
  if (qt_settings.minimap_y < 0 || qt_settings.minimap_y > 1) {
    qt_settings.chat_fx_pos = 0.79;
  }
}
 
/************************************************************************/
void fc_client::write_settings()
{
  QString sname = "freeciv-qt-client-set-"
    + QString::number(MAJOR_NEW_OPTION_FILE_NAME) + "."
    + QString::number(MINOR_NEW_OPTION_FILE_NAME);
  QSettings s(QSettings::IniFormat, QSettings::UserScope,
              sname);
 
  s.setValue("Chat-fx-size", qt_settings.chat_fwidth);
  s.setValue("Chat-fy-size", qt_settings.chat_fheight);
  s.setValue("Chat-fx-pos", qt_settings.chat_fx_pos);
  s.setValue("Chat-fy-pos", qt_settings.chat_fy_pos);
  s.setValue("City-dialog", qt_settings.city_geometry);
  s.setValue("splitter1", qt_settings.city_splitter1);
  s.setValue("splitter2", qt_settings.city_splitter2);
  s.setValue("splitter3", qt_settings.city_splitter3);
  s.setValue("help-dialog", qt_settings.help_geometry);
  s.setValue("help_splitter1", qt_settings.help_splitter1);
  s.setValue("opt-client-dialog", qt_settings.options_client_geometry);
  s.setValue("opt-server-dialog", qt_settings.options_server_geometry);
  s.setValue("unit_fx", qt_settings.unit_info_pos_fx);
  s.setValue("unit_fy", qt_settings.unit_info_pos_fy);
  s.setValue("minimap_x", qt_settings.minimap_x);
  s.setValue("minimap_y", qt_settings.minimap_y);
  s.setValue("minimap_width", qt_settings.minimap_width);
  s.setValue("minimap_height", qt_settings.minimap_height);
  s.setValue("battlelog_scale", qt_settings.battlelog_scale);
  s.setValue("battlelog_x", qt_settings.battlelog_x);
  s.setValue("battlelog_y", qt_settings.battlelog_y);
  s.setValue("new_turn_text", qt_settings.show_new_turn_text);
  s.setValue("show_battle_log", qt_settings.show_battle_log);
  write_shortcuts();
}
 
/************************************************************************/
void fc_client::toggle_unit_sel_widget(struct tile *ptile)
{
  if (unit_sel != NULL) {
    unit_sel->close();
    delete unit_sel;
    unit_sel = new units_select(ptile, gui()->mapview_wdg);
    unit_sel->show();
  } else {
    unit_sel = new units_select(ptile, gui()->mapview_wdg);
    unit_sel->show();
  }
}
 
/************************************************************************/
void fc_client::update_unit_sel()
{
  if (unit_sel != NULL) {
    unit_sel->update_units();
    unit_sel->create_pixmap();
    unit_sel->update();
  }
}
 
/************************************************************************/
void fc_client::popdown_unit_sel()
{
  if (unit_sel != nullptr) {
    unit_sel->close();
    delete unit_sel;
    unit_sel = nullptr;
  }
}
 
/************************************************************************/
void fc_client::remove_repo_dlg(QString str)
{
  // If app is closing, opened_repo_dlg is already deleted */
  if (!is_closing()) {
    opened_repo_dlgs.remove(str);
  }
}
 
/************************************************************************/
void fc_client::popup_client_options()
{
  option_dialog_popup(_("Set local options"), client_optset, true);
}
 
/************************************************************************/
void fc_client::create_cursors(void)
{
  enum cursor_type curs;
  int cursor;
  QPixmap *pix;
  int hot_x, hot_y;
  struct sprite *sprite;
  int frame;
  QCursor *c;
  for (cursor = 0; cursor < CURSOR_LAST; cursor++) {
    for (frame = 0; frame < NUM_CURSOR_FRAMES; frame++) {
      curs = static_cast<cursor_type>(cursor);
      sprite = get_cursor_sprite(tileset, curs, &hot_x, &hot_y, frame);
      pix = sprite->pm;
      c = new QCursor(*pix, hot_x, hot_y);
      fc_cursors[cursor][frame] = c;
    }
  }
}
 
/************************************************************************/
fc_corner::fc_corner(QMainWindow *qmw): QWidget()
{
  QHBoxLayout *hb;
  QPushButton *qpb;
  int h;
  QFont *f = fc_font::instance()->get_font(fonts::default_font);
 
  if (f->pointSize() > 0) {
    h = f->pointSize();
  } else {
    h = f->pixelSize();
  }
  mw = qmw;
  hb = new QHBoxLayout();
  qpb = new QPushButton(fc_icons::instance()->get_icon("cmin"), "");
  qpb->setFixedSize(h, h);
  connect(qpb, &QAbstractButton::clicked, this, &fc_corner::minimize);
  hb->addWidget(qpb);
  qpb = new QPushButton(fc_icons::instance()->get_icon("cmax"), "");
  qpb->setFixedSize(h, h);
  connect(qpb, &QAbstractButton::clicked, this, &fc_corner::maximize);
  hb->addWidget(qpb);
  qpb = new QPushButton(fc_icons::instance()->get_icon("cclose"), "");
  qpb->setFixedSize(h, h);
  connect(qpb, &QAbstractButton::clicked, this, &fc_corner::close_fc);
  hb->addWidget(qpb);
  setLayout(hb);
}
 
/************************************************************************/
void fc_corner::close_fc()
{
  mw->close();
}
 
/************************************************************************/
void fc_corner::maximize()
{
  if (!mw->isMaximized()) {
    mw->showMaximized();
  } else {
    mw->showNormal();
  }
}
 
/************************************************************************/
void fc_corner::minimize()
{
  mw->showMinimized();
}
 
/************************************************************************/
fc_game_tab_widget::fc_game_tab_widget(): QStackedWidget()
{
}
 
/************************************************************************/
void fc_game_tab_widget::init()
{
  connect(this, &QStackedWidget::currentChanged, this, &fc_game_tab_widget::current_changed);
}
 
/************************************************************************/
fc_icons::fc_icons()
{
}
 
/************************************************************************/
fc_icons *fc_icons::instance()
{
  if (!m_instance) {
    m_instance = new fc_icons;
  }
  return m_instance;
}
 
/************************************************************************/
void fc_icons::drop()
{
  if (m_instance) {
    delete m_instance;
    m_instance = 0;
  }
}
 
/************************************************************************/
QIcon fc_icons::get_icon(const QString &id)
{
  QIcon icon;
  QString str;
  QByteArray pn_bytes;
  QByteArray png_bytes;
 
  str = QString("themes") + DIR_SEPARATOR + "gui-qt" + DIR_SEPARATOR;
  // Try custom icon from theme
  pn_bytes = str.toUtf8();
  png_bytes = QString(pn_bytes.data() + current_theme + DIR_SEPARATOR
                      + id + ".png").toUtf8();
  icon.addFile(fileinfoname(get_data_dirs(),
                            png_bytes.data()));
  str = str + "icons" + DIR_SEPARATOR;
  // Try icon from icons dir
  if (icon.isNull()) {
    pn_bytes = str.toUtf8();
    png_bytes = QString(pn_bytes.data() + id + ".png").toUtf8();
    icon.addFile(fileinfoname(get_data_dirs(),
                              png_bytes.data()));
  }
 
  return QIcon(icon);
}
 
/************************************************************************/
QPixmap *fc_icons::get_pixmap(const QString &id)
{
  QPixmap *pm;
  bool status;
  QString str;
  QByteArray png_bytes;
 
  pm = new QPixmap;
  if (QPixmapCache::find(id, pm)) {
    return pm;
  }
  str = QString("themes") + DIR_SEPARATOR + "gui-qt" + DIR_SEPARATOR;
  png_bytes = QString(str + current_theme + DIR_SEPARATOR
                      + id + ".png").toUtf8();
  status = pm->load(fileinfoname(get_data_dirs(),
                                 png_bytes.data()));
 
  if (!status) {
    str = str + "icons" + DIR_SEPARATOR;
    png_bytes = QString(str + id + ".png").toUtf8();
    pm->load(fileinfoname(get_data_dirs(), png_bytes.data()));
  }
  QPixmapCache::insert(id, *pm);
 
  return pm;
}
 
/************************************************************************/
QString fc_icons::get_path(const QString &id)
{
  QString str;
  QByteArray png_bytes;
 
  str = QString("themes") + DIR_SEPARATOR + "gui-qt"
        + DIR_SEPARATOR + "icons" + DIR_SEPARATOR;
  png_bytes = QString(str + id + ".png").toUtf8();
 
  return fileinfoname(get_data_dirs(),
                      png_bytes.data());
}
 
/************************************************************************/
void fc_game_tab_widget::resizeEvent(QResizeEvent *event)
{
  QSize size;
 
  size = event->size();
  if (C_S_RUNNING <= client_state()) {
    gui()->sidebar_wdg->resize_me(size.height());
    map_canvas_resized(size.width(), size.height());
    gui()->infotab->resize(qRound((size.width()
                             * gui()->qt_settings.chat_fwidth)),
                             qRound((size.height()
                             * gui()->qt_settings.chat_fheight)));
    gui()->infotab->move(qRound((size.width()
                                 * gui()->qt_settings.chat_fx_pos)),
                         qRound((size.height()
                                 * gui()->qt_settings.chat_fy_pos)));
    gui()->infotab->restore_chat();
    gui()->minimapview_wdg->move(qRound(gui()->qt_settings.minimap_x
                                 * mapview.width),
                                 qRound(gui()->qt_settings.minimap_y
                                 * mapview.height));
    gui()->minimapview_wdg->resize(qRound(gui()->qt_settings.minimap_width
                                   * mapview.width),
                                   qRound(gui()->qt_settings.minimap_height
                                   * mapview.height));
    gui()->battlelog_wdg->set_scale(gui()->qt_settings.battlelog_scale);
    gui()->battlelog_wdg->move(qRound(gui()->qt_settings.battlelog_x
                               * mapview.width),
                               qRound(gui()->qt_settings.battlelog_y
                               * mapview.height));
    gui()->x_vote->move(width() / 2 - gui()->x_vote->width() / 2, 0);
    gui()->update_sidebar_tooltips();
    side_disable_endturn(get_turn_done_button_state());
    gui()->mapview_wdg->resize(event->size().width(),size.height());
    gui()->unitinfo_wdg->update_actions(nullptr);
  }
  event->setAccepted(true);
}
 
/************************************************************************/
void fc_game_tab_widget::current_changed(int index)
{
  QList<fc_sidewidget*> objs;
  fc_sidewidget *sw;
 
  if (gui()->is_closing()) {
    return;
  }
  objs = gui()->sidebar_wdg->objects;
 
  foreach(sw, objs) {
    sw->update_final_pixmap();
  }
  currentWidget()->hide();
  widget(index)->show();
 
  // Set focus to map instead sidebar
  if (gui()->mapview_wdg && gui()->current_page() == PAGE_GAME
      && index == 0) {
    gui()->mapview_wdg->setFocus();
  }
 
}
 
/************************************************************************/
pregame_options::pregame_options(QWidget *parent) : QWidget(parent)
{
}
 
/************************************************************************/
void pregame_options::init()
{
  QFormLayout *layout;
  QPushButton *qclient_options;
  QHBoxLayout *hbox = nullptr;
  QPushButton *but;
  int level;
 
  layout = new QFormLayout(this);
  nation = new QPushButton(this);
  qclient_options = new QPushButton(_("Client Options"));
  max_players = new QSpinBox(this);
  ailevel = new QComboBox(this);
  cruleset = new QComboBox(this);
  max_players->setRange(1, MAX_NUM_PLAYERS);
 
  // Text and icon set by update_buttons()
  connect(nation, &QPushButton::clicked,
          this, &pregame_options::pick_nation);
  connect(qclient_options, SIGNAL(clicked()), parentWidget(),
          SLOT(popup_client_options()));
  for (level = 0; level < AI_LEVEL_COUNT; level++) {
    if (is_settable_ai_level(static_cast<ai_level>(level))) {
      const char *level_name = ai_level_translated_name(
                                        static_cast<ai_level>(level));
      ailevel->addItem(level_name, level);
    }
  }
  ailevel->setCurrentIndex(-1);
 
  connect(max_players, SIGNAL(valueChanged(int)),
          SLOT(max_players_change(int)));
  connect(ailevel, SIGNAL(currentIndexChanged(int)),
          SLOT(ailevel_change(int)));
  connect(cruleset, SIGNAL(currentIndexChanged(int)),
          SLOT(ruleset_change(int)));
 
  but = new QPushButton;
  but->setText(_("More Game Options"));
  but->setIcon(fc_icons::instance()->get_icon("preferences-other"));
  QObject::connect(but, &QAbstractButton::clicked, this,
                   &pregame_options::popup_server_options);
 
  layout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
  layout->addRow(_("Nation:"), nation);
  layout->addRow(_("Rules:"), cruleset);
 
  hbox = new QHBoxLayout();
  hbox->addWidget(max_players);
  hbox->addWidget(ailevel);
  layout->addRow(_("Players:"), hbox);
  layout->addWidget(but);
  layout->addWidget(qclient_options);
  setLayout(layout);
 
  update_buttons();
}
 
/************************************************************************/
void pregame_options::set_rulesets(int num_rulesets, char **rulesets)
{
  int i;
  int def_idx = -1;
 
  cruleset->clear();
  cruleset->blockSignals(true);
  for (i = 0; i < num_rulesets; i++) {
    cruleset->addItem(rulesets[i], i);
    if (!strcmp("default", rulesets[i])) {
      def_idx = i;
    }
  }
 
  // HACK: server should tell us the current ruleset.
  cruleset->setCurrentIndex(def_idx);
  cruleset->blockSignals(false);
}
 
/************************************************************************/
void pregame_options::set_aifill(int aifill)
{
  max_players->blockSignals(true);
  max_players->setValue(aifill);
  max_players->blockSignals(false);
}
 
/************************************************************************/
void pregame_options::update_buttons()
{
  struct sprite *psprite = nullptr;
  QPixmap *pixmap = nullptr;
  const struct player *pplayer = client_player();
 
  // Update the "Select Nation" button
  if (pplayer != nullptr) {
    if (pplayer->nation != nullptr) {
      // Defeat keyboard shortcut mnemonics
      nation->setText(QString(nation_adjective_for_player(pplayer))
                      .replace("&", "&&"));
      psprite = get_nation_shield_sprite(tileset, pplayer->nation);
      pixmap = psprite->pm;
      nation->setIconSize(pixmap->size());
      nation->setIcon(QIcon(*pixmap));
    } else {
      nation->setText(_("Random"));
      nation->setIcon(fc_icons::instance()->get_icon("flush-random"));
    }
  }
}
 
/************************************************************************/
void pregame_options::update_ai_level()
{
  enum ai_level level = server_ai_level();
 
  if (ai_level_is_valid(level)) {
    int i = ailevel->findData(level);
 
    ailevel->setCurrentIndex(i);
  } else {
    ailevel->setCurrentIndex(-1);
  }
}
 
/************************************************************************/
void pregame_options::max_players_change(int i)
{
  option_int_set(optset_option_by_name(server_optset, "aifill"), i);
}
 
/************************************************************************/
void pregame_options::ailevel_change(int i)
{
  QVariant v = ailevel->currentData();
 
  if (v.isValid()) {
    enum ai_level k = static_cast<ai_level>(v.toInt());
 
    // Suppress changes provoked by server rather than local user
    if (server_ai_level() != k) {
      const char *name = ai_level_cmd(k);
 
      send_chat_printf("/%s", name);
    }
  }
}
 
/************************************************************************/
void pregame_options::ruleset_change(int i)
{
  if (!cruleset->currentText().isEmpty()) {
    QByteArray rn_bytes;
 
    rn_bytes = cruleset->currentText().toUtf8();
    set_ruleset(rn_bytes.data());
  }
}
 
/************************************************************************/
void pregame_options::pick_nation()
{
  popup_races_dialog(client_player());
}
 
/************************************************************************/
void pregame_options::popup_server_options()
{
  option_dialog_popup(_("Set server options"), server_optset, false);
}