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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "table/strings.h"

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#include "functions.h"

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#include "window.h"

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#include "gui.h"

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#include "station.h"

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#include "industry.h"

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#include "town.h"

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#include "player.h"

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#include "gfx.h"

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#include "economy.h"

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#include "variables.h"

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static void HandleSubsidyClick(int y)

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{

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	const Subsidy* s;

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	uint num;

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	int offs;

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	TileIndex xy;

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	if (y < 0) return;

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	num = 0;

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	for (s = _subsidies; s != endof(_subsidies); s++) {

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		if (s->cargo_type != CT_INVALID && s->age < 12) {

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			y -= 10;

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			if (y < 0) goto handle_click;

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			num++;

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		}

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	}

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	if (num == 0) {

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		y -= 10;

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		if (y < 0) return;

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	}

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	y -= 11;

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	if (y < 0) return;

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	for (s = _subsidies; s != endof(_subsidies); s++) {

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		if (s->cargo_type != CT_INVALID && s->age >= 12) {

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			y -= 10;

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			if (y < 0) goto handle_click;

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		}

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	}

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	return;

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handle_click:

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	/* determine from coordinate for subsidy and try to scroll to it */

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	offs = s->from;

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	if (s->age >= 12) {

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		xy = GetStation(offs)->xy;

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	} else if (s->cargo_type == CT_PASSENGERS || s->cargo_type == CT_MAIL) {

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		xy = GetTown(offs)->xy;

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	} else {

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		xy = GetIndustry(offs)->xy;

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	}

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	if (!ScrollMainWindowToTile(xy)) {

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		/* otherwise determine to coordinate for subsidy and scroll to it */

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		offs = s->to;

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		if (s->age >= 12) {

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			xy = GetStation(offs)->xy;

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		} else if (s->cargo_type == CT_PASSENGERS || s->cargo_type == CT_MAIL || s->cargo_type == CT_GOODS || s->cargo_type == CT_FOOD) {

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			xy = GetTown(offs)->xy;

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		} else {

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			xy = GetIndustry(offs)->xy;

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		}

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		ScrollMainWindowToTile(xy);

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	}

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}

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static void DrawSubsidiesWindow(const Window* w)

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{

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	YearMonthDay ymd;

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	const Subsidy* s;

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	uint num;

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	int x;

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	int y;

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	DrawWindowWidgets(w);

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	ConvertDayToYMD(&ymd, _date);

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	y = 15;

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	x = 1;

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	DrawString(x, y, STR_2026_SUBSIDIES_ON_OFFER_FOR, 0);

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	y += 10;

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	num = 0;

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	for (s = _subsidies; s != endof(_subsidies); s++) {

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		if (s->cargo_type != CT_INVALID && s->age < 12) {

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			int x2;

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			SetupSubsidyDecodeParam(s, 1);

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			x2 = DrawString(x + 2, y, STR_2027_FROM_TO, 0);

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			SetDParam(0, _date - ymd.day + 384 - s->age * 32);

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			DrawString(x2, y, STR_2028_BY, 0);

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			y += 10;

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			num++;

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		}

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	}

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	if (num == 0) {

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		DrawString(x + 2, y, STR_202A_NONE, 0);

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		y += 10;

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	}

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	DrawString(x, y + 1, STR_202B_SERVICES_ALREADY_SUBSIDISED, 0);

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	y += 10;

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	num = 0;

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	for (s = _subsidies; s != endof(_subsidies); s++) {

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		if (s->cargo_type != CT_INVALID && s->age >= 12) {

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			const Player* p;

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			int xt;

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			SetupSubsidyDecodeParam(s, 1);

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			p = GetPlayer(GetStation(s->to)->owner);

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			SetDParam(3, p->name_1);

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			SetDParam(4, p->name_2);

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			xt = DrawString(x + 2, y, STR_202C_FROM_TO, 0);

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			SetDParam(0, _date - ymd.day + 768 - s->age * 32);

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			DrawString(xt, y, STR_202D_UNTIL, 0);

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			y += 10;

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			num++;

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		}

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	}

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	if (num == 0) DrawString(x + 2, y, STR_202A_NONE, 0);

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}

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static void SubsidiesListWndProc(Window *w, WindowEvent *e)

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{

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	switch (e->event) {

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		case WE_PAINT: DrawSubsidiesWindow(w); break;

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		case WE_CLICK:

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			switch (e->click.widget) {

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				case 2: HandleSubsidyClick(e->click.pt.y - 25); break;

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			}

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		break;

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	}

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}

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static const Widget _subsidies_list_widgets[] = {

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{   WWT_CLOSEBOX,   RESIZE_NONE,    13,     0,    10,     0,    13, STR_00C5, STR_018B_CLOSE_WINDOW},

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{    WWT_CAPTION,   RESIZE_NONE,    13,    11,   629,     0,    13, STR_2025_SUBSIDIES, STR_018C_WINDOW_TITLE_DRAG_THIS},

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{      WWT_PANEL,   RESIZE_NONE,    13,     0,   629,    14,   126, 0x0, STR_01FD_CLICK_ON_SERVICE_TO_CENTER},

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{   WIDGETS_END},

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};

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static const WindowDesc _subsidies_list_desc = {

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	-1, -1, 630, 127,

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	WC_SUBSIDIES_LIST,0,

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	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET,

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	_subsidies_list_widgets,

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	SubsidiesListWndProc

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};

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void ShowSubsidiesList(void)

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{

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	AllocateWindowDescFront(&_subsidies_list_desc, 0);

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}