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/* $Id$ */

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/** @file statusbar_gui.cpp The GUI for the bottom status bar. */

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#include "stdafx.h"

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#include "openttd.h"

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#include "settings_type.h"

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#include "date_func.h"

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#include "gfx_func.h"

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#include "news_func.h"

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#include "company_func.h"

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#include "string_func.h"

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#include "strings_func.h"

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#include "company_base.h"

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#include "tilehighlight_func.h"

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#include "news_gui.h"

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#include "company_gui.h"

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#include "window_gui.h"

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#include "variables.h"

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#include "window_func.h"

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#include "statusbar_gui.h"

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#include "table/strings.h"

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#include "table/sprites.h"

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static bool DrawScrollingStatusText(const NewsItem *ni, int pos, int width)

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{

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	CopyInDParam(0, ni->params, lengthof(ni->params));

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	StringID str = ni->string_id;

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	char buf[512];

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	GetString(buf, str, lastof(buf));

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	const char *s = buf;

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	char buffer[256];

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	char *d = buffer;

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	const char *last = lastof(buffer);

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	for (;;) {

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		WChar c = Utf8Consume(&s);

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		if (c == 0) {

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			break;

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		} else if (c == 0x0D) {

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			if (d + 4 >= last) break;

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			d[0] = d[1] = d[2] = d[3] = ' ';

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			d += 4;

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		} else if (IsPrintable(c)) {

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			if (d + Utf8CharLen(c) >= last) break;

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			d += Utf8Encode(d, c);

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		}

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	}

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	*d = '\0';

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	DrawPixelInfo tmp_dpi;

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	if (!FillDrawPixelInfo(&tmp_dpi, 141, 1, width, 11)) return true;

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	DrawPixelInfo *old_dpi = _cur_dpi;

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	_cur_dpi = &tmp_dpi;

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	int x = DoDrawString(buffer, pos, 0, TC_LIGHT_BLUE);

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	_cur_dpi = old_dpi;

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	return x > 0;

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}

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struct StatusBarWindow : Window {

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	bool saving;

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	int ticker_scroll;

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	int reminder_timeout;

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	StatusBarWindow(const WindowDesc *desc) : Window(desc)

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	{

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		CLRBITS(this->flags4, WF_WHITE_BORDER_MASK);

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		this->ticker_scroll = -1280;

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		this->FindWindowPlacementAndResize(desc);

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	}

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	virtual void OnPaint()

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	{

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		const Company *c = (_local_company == COMPANY_SPECTATOR) ? NULL : GetCompany(_local_company);

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		this->DrawWidgets();

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		SetDParam(0, _date);

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		DrawStringCentered(70, 1, (_pause_game || _settings_client.gui.status_long_date) ? STR_00AF : STR_00AE, TC_FROMSTRING);

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		if (c != NULL) {

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			/* Draw company money */

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			SetDParam(0, c->money);

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			DrawStringCentered(this->widget[2].left + 70, 1, STR_0004, TC_FROMSTRING);

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		}

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		/* Draw status bar */

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		if (this->saving) { // true when saving is active

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			DrawStringCenteredTruncated(this->widget[1].left + 1, this->widget[1].right - 1, 1, STR_SAVING_GAME, TC_FROMSTRING);

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		} else if (_do_autosave) {

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			DrawStringCenteredTruncated(this->widget[1].left + 1, this->widget[1].right - 1, 1, STR_032F_AUTOSAVE, TC_FROMSTRING);

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		} else if (_pause_game) {

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			DrawStringCenteredTruncated(this->widget[1].left + 1, this->widget[1].right - 1, 1, STR_0319_PAUSED, TC_FROMSTRING);

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		} else if (this->ticker_scroll > -1280 && FindWindowById(WC_NEWS_WINDOW, 0) == NULL && _statusbar_news_item.string_id != 0) {

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			/* Draw the scrolling news text */

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			if (!DrawScrollingStatusText(&_statusbar_news_item, this->ticker_scroll, this->widget[1].right - this->widget[1].left - 2)) {

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				this->ticker_scroll = -1280;

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				if (c != NULL) {

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					/* This is the default text */

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					SetDParam(0, c->index);

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					DrawStringCenteredTruncated(this->widget[1].left + 1, this->widget[1].right - 1, 1, STR_02BA, TC_FROMSTRING);

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				}

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			}

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		} else {

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			if (c != NULL) {

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				/* This is the default text */

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				SetDParam(0, c->index);

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				DrawStringCenteredTruncated(this->widget[1].left + 1, this->widget[1].right - 1, 1, STR_02BA, TC_FROMSTRING);

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			}

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		}

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		if (this->reminder_timeout > 0) DrawSprite(SPR_BLOT, PALETTE_TO_RED, this->widget[1].right - 11, 2);

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	}

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	virtual void OnInvalidateData(int data)

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	{

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		switch (data) {

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			default: NOT_REACHED();

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			case SBI_SAVELOAD_START:  this->saving = true;  break;

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			case SBI_SAVELOAD_FINISH: this->saving = false; break;

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			case SBI_SHOW_TICKER:     this->ticker_scroll    = 360; break;

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			case SBI_SHOW_REMINDER:   this->reminder_timeout =  91; break;

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		}

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	}

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	virtual void OnClick(Point pt, int widget)

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	{

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		switch (widget) {

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			case 1: ShowLastNewsMessage(); break;

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			case 2: if (_local_company != COMPANY_SPECTATOR) ShowCompanyFinances(_local_company); break;

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			default: ResetObjectToPlace();

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		}

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	}

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	virtual void OnTick()

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	{

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		if (_pause_game) return;

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		if (this->ticker_scroll > -1280) { // Scrolling text

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			this->ticker_scroll -= 2;

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			this->InvalidateWidget(1);

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		}

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		if (this->reminder_timeout > 0) { // Red blot to show there are new unread newsmessages

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			this->reminder_timeout -= 2;

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		} else if (this->reminder_timeout < 0) {

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			this->reminder_timeout = 0;

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			this->InvalidateWidget(1);

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		}

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	}

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};

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static const Widget _main_status_widgets[] = {

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{      WWT_PANEL,   RESIZE_NONE,   COLOUR_GREY,     0,   139,     0,    11, 0x0, STR_NULL},

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{    WWT_PUSHBTN,   RESIZE_RIGHT,  COLOUR_GREY,   140,   179,     0,    11, 0x0, STR_02B7_SHOW_LAST_MESSAGE_OR_NEWS},

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{    WWT_PUSHBTN,   RESIZE_LR,     COLOUR_GREY,   180,   319,     0,    11, 0x0, STR_NULL},

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{   WIDGETS_END},

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};

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static WindowDesc _main_status_desc = {

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	WDP_CENTER, 0, 320, 12, 640, 12,

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	WC_STATUS_BAR, WC_NONE,

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	WDF_STD_TOOLTIPS | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,

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	_main_status_widgets,

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};

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/**

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 * Checks whether the news ticker is currently being used.

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 */

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bool IsNewsTickerShown()

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{

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	const StatusBarWindow *w = dynamic_cast<StatusBarWindow*>(FindWindowById(WC_STATUS_BAR, 0));

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	return w != NULL && w->ticker_scroll > -1280;

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}

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void ShowStatusBar()

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{

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	_main_status_desc.top = _screen.height - 12;

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	new StatusBarWindow(&_main_status_desc);

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}