statusbar_gui.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "stdafx.h"
#include "core/backup_type.hpp"
#include "gfx_func.h"
#include "news_func.h"
#include "company_func.h"
#include "string_func.h"
#include "strings_func.h"
#include "company_base.h"
#include "tilehighlight_func.h"
#include "news_gui.h"
#include "company_gui.h"
#include "window_gui.h"
#include "saveload/saveload.h"
#include "window_func.h"
#include "statusbar_gui.h"
#include "toolbar_gui.h"
#include "core/geometry_func.hpp"
#include "zoom_func.h"
#include "timer/timer.h"
#include "timer/timer_game_calendar.h"
#include "timer/timer_window.h"
 
#include "widgets/statusbar_widget.h"
 
#include "table/strings.h"
#include "table/sprites.h"
 
#include "safeguards.h"
 
static bool DrawScrollingStatusText(const NewsItem *ni, int scroll_pos, int left, int right, int top, int bottom)
{
  CopyInDParam(ni->params);
 
  /* Replace newlines and the likes with spaces. */
  std::string message = StrMakeValid(GetString(ni->string_id), SVS_REPLACE_TAB_CR_NL_WITH_SPACE);
 
  DrawPixelInfo tmp_dpi;
  if (!FillDrawPixelInfo(&tmp_dpi, left, top, right - left, bottom)) return true;
 
  int width = GetStringBoundingBox(message).width;
  int pos = (_current_text_dir == TD_RTL) ? (scroll_pos - width) : (right - scroll_pos - left);
 
  AutoRestoreBackup dpi_backup(_cur_dpi, &tmp_dpi);
  DrawString(pos, INT16_MAX, 0, message, TC_LIGHT_BLUE, SA_LEFT | SA_FORCE);
 
  return (_current_text_dir == TD_RTL) ? (pos < right - left) : (pos + width > 0);
}
 
struct StatusBarWindow : Window {
  bool saving;
  int ticker_scroll;
 
  static const int TICKER_STOP    = 1640; 
  static const int COUNTER_STEP   =    2; 
  static constexpr auto REMINDER_START = std::chrono::milliseconds(1350); 
 
  StatusBarWindow(WindowDesc &desc) : Window(desc)
  {
    this->ticker_scroll = TICKER_STOP;
 
    this->InitNested();
    CLRBITS(this->flags, WF_WHITE_BORDER);
    PositionStatusbar(this);
  }
 
  Point OnInitialPosition([[maybe_unused]] int16_t sm_width, [[maybe_unused]] int16_t sm_height, [[maybe_unused]] int window_number) override
  {
    Point pt = { 0, _screen.height - sm_height };
    return pt;
  }
 
  void FindWindowPlacementAndResize([[maybe_unused]] int def_width, [[maybe_unused]] int def_height) override
  {
    Window::FindWindowPlacementAndResize(_toolbar_width, def_height);
  }
 
  void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
  {
    Dimension d;
    switch (widget) {
      case WID_S_LEFT:
        SetDParamMaxValue(0, TimerGameCalendar::DateAtStartOfYear(CalendarTime::MAX_YEAR));
        d = GetStringBoundingBox(STR_JUST_DATE_LONG);
        break;
 
      case WID_S_RIGHT: {
        int64_t max_money = UINT32_MAX;
        for (const Company *c : Company::Iterate()) max_money = std::max<int64_t>(c->money, max_money);
        SetDParam(0, 100LL * max_money);
        d = GetStringBoundingBox(STR_JUST_CURRENCY_LONG);
        break;
      }
 
      default:
        return;
    }
 
    d.width += padding.width;
    d.height += padding.height;
    size = maxdim(d, size);
  }
 
  void DrawWidget(const Rect &r, WidgetID widget) const override
  {
    Rect tr = r.Shrink(WidgetDimensions::scaled.framerect, RectPadding::zero);
    tr.top = CenterBounds(r.top, r.bottom, GetCharacterHeight(FS_NORMAL));
    switch (widget) {
      case WID_S_LEFT:
        /* Draw the date */
        SetDParam(0, TimerGameCalendar::date);
        DrawString(tr, STR_JUST_DATE_LONG, TC_WHITE, SA_HOR_CENTER);
        break;
 
      case WID_S_RIGHT: {
        if (_local_company == COMPANY_SPECTATOR) {
          DrawString(tr, STR_STATUSBAR_SPECTATOR, TC_FROMSTRING, SA_HOR_CENTER);
        } else if (_settings_game.difficulty.infinite_money) {
          DrawString(tr, STR_STATUSBAR_INFINITE_MONEY, TC_FROMSTRING, SA_HOR_CENTER);
        } else {
          /* Draw company money, if any */
          const Company *c = Company::GetIfValid(_local_company);
          if (c != nullptr) {
            SetDParam(0, c->money);
            DrawString(tr, STR_JUST_CURRENCY_LONG, TC_WHITE, SA_HOR_CENTER);
          }
        }
        break;
      }
 
      case WID_S_MIDDLE:
        /* Draw status bar */
        if (this->saving) { // true when saving is active
          DrawString(tr, STR_STATUSBAR_SAVING_GAME, TC_FROMSTRING, SA_HOR_CENTER | SA_VERT_CENTER);
        } else if (_do_autosave) {
          DrawString(tr, STR_STATUSBAR_AUTOSAVE, TC_FROMSTRING, SA_HOR_CENTER);
        } else if (_pause_mode != PM_UNPAUSED) {
          StringID msg = (_pause_mode & PM_PAUSED_LINK_GRAPH) ? STR_STATUSBAR_PAUSED_LINK_GRAPH : STR_STATUSBAR_PAUSED;
          DrawString(tr, msg, TC_FROMSTRING, SA_HOR_CENTER);
        } else if (this->ticker_scroll < TICKER_STOP && GetStatusbarNews() != nullptr && GetStatusbarNews()->string_id != 0) {
          /* Draw the scrolling news text */
          if (!DrawScrollingStatusText(GetStatusbarNews(), ScaleGUITrad(this->ticker_scroll), tr.left, tr.right, tr.top, tr.bottom)) {
            InvalidateWindowData(WC_STATUS_BAR, 0, SBI_NEWS_DELETED);
            if (Company::IsValidID(_local_company)) {
              /* This is the default text */
              SetDParam(0, _local_company);
              DrawString(tr, STR_STATUSBAR_COMPANY_NAME, TC_FROMSTRING, SA_HOR_CENTER);
            }
          }
        } else {
          if (Company::IsValidID(_local_company)) {
            /* This is the default text */
            SetDParam(0, _local_company);
            DrawString(tr, STR_STATUSBAR_COMPANY_NAME, TC_FROMSTRING, SA_HOR_CENTER);
          }
        }
 
        if (!this->reminder_timeout.HasFired()) {
          Dimension icon_size = GetSpriteSize(SPR_UNREAD_NEWS);
          DrawSprite(SPR_UNREAD_NEWS, PAL_NONE, tr.right - icon_size.width, CenterBounds(r.top, r.bottom, icon_size.height));
        }
        break;
    }
  }
 
  void OnInvalidateData([[maybe_unused]] int data = 0, [[maybe_unused]] bool gui_scope = true) override
  {
    if (!gui_scope) return;
    switch (data) {
      default: NOT_REACHED();
      case SBI_SAVELOAD_START:  this->saving = true;  break;
      case SBI_SAVELOAD_FINISH: this->saving = false; break;
      case SBI_SHOW_TICKER:     this->ticker_scroll = 0; break;
      case SBI_SHOW_REMINDER:   this->reminder_timeout.Reset(); break;
      case SBI_NEWS_DELETED:
        this->ticker_scroll    =   TICKER_STOP; // reset ticker ...
        this->reminder_timeout.Abort(); // ... and reminder
        break;
    }
  }
 
  void OnClick([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override
  {
    switch (widget) {
      case WID_S_MIDDLE: ShowLastNewsMessage(); break;
      case WID_S_RIGHT:  if (_local_company != COMPANY_SPECTATOR) ShowCompanyFinances(_local_company); break;
      default: ResetObjectToPlace();
    }
  }
 
  IntervalTimer<TimerWindow> ticker_scroll_interval = {std::chrono::milliseconds(15), [this](uint count) {
    if (_pause_mode != PM_UNPAUSED) return;
 
    if (this->ticker_scroll < TICKER_STOP) {
      this->ticker_scroll += count;
      this->SetWidgetDirty(WID_S_MIDDLE);
    }
  }};
 
  TimeoutTimer<TimerWindow> reminder_timeout = {REMINDER_START, [this]() {
    this->SetWidgetDirty(WID_S_MIDDLE);
  }};
 
  IntervalTimer<TimerGameCalendar> daily_interval = {{TimerGameCalendar::DAY, TimerGameCalendar::Priority::NONE}, [this](auto) {
    this->SetWidgetDirty(WID_S_LEFT);
  }};
};
 
static constexpr NWidgetPart _nested_main_status_widgets[] = {
  NWidget(NWID_HORIZONTAL),
    NWidget(WWT_PANEL, COLOUR_GREY, WID_S_LEFT), SetMinimalSize(140, 12), EndContainer(),
    NWidget(WWT_PUSHBTN, COLOUR_GREY, WID_S_MIDDLE), SetMinimalSize(40, 12), SetDataTip(0x0, STR_STATUSBAR_TOOLTIP_SHOW_LAST_NEWS), SetResize(1, 0),
    NWidget(WWT_PUSHBTN, COLOUR_GREY, WID_S_RIGHT), SetMinimalSize(140, 12),
  EndContainer(),
};
 
static WindowDesc _main_status_desc(
  WDP_MANUAL, nullptr, 0, 0,
  WC_STATUS_BAR, WC_NONE,
  WDF_NO_FOCUS | WDF_NO_CLOSE,
  _nested_main_status_widgets
);
 
bool IsNewsTickerShown()
{
  const StatusBarWindow *w = dynamic_cast<StatusBarWindow*>(FindWindowById(WC_STATUS_BAR, 0));
  return w != nullptr && w->ticker_scroll < StatusBarWindow::TICKER_STOP;
}
 
void ShowStatusBar()
{
  new StatusBarWindow(_main_status_desc);
}