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path: root/src/signs_gui.cpp
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/* $Id$ */

/** @file signs_gui.cpp The GUI for signs. */

#include "stdafx.h"
#include "openttd.h"
#include "gui.h"
#include "textbuf_gui.h"
#include "window_gui.h"
#include "player_gui.h"
#include "player_func.h"
#include "signs_base.h"
#include "signs_func.h"
#include "debug.h"
#include "variables.h"
#include "command_func.h"
#include "strings_func.h"
#include "core/alloc_func.hpp"
#include "window_func.h"
#include "map_func.h"
#include "gfx_func.h"
#include "viewport_func.h"
#include "querystring_gui.h"
#include "sortlist_type.h"

#include "table/strings.h"
#include "table/sprites.h"

struct SignList {
	typedef GUIList<const Sign *> GUISignList;

	static const Sign *last_sign;
	GUISignList signs;

	void BuildSignsList()
	{
		if (!this->signs.NeedRebuild()) return;

		DEBUG(misc, 3, "Building sign list");

		this->signs.Clear();

		const Sign *si;
		FOR_ALL_SIGNS(si) *this->signs.Append() = si;

		this->signs.Compact();
		this->signs.RebuildDone();
	}

	/** Sort signs by their name */
	static int CDECL SignNameSorter(const Sign* const *a, const Sign* const *b)
	{
		static char buf_cache[64];
		char buf[64];

		SetDParam(0, (*a)->index);
		GetString(buf, STR_SIGN_NAME, lastof(buf));

		if (*b != last_sign) {
			last_sign = *b;
			SetDParam(0, (*b)->index);
			GetString(buf_cache, STR_SIGN_NAME, lastof(buf_cache));
		}

		return strcasecmp(buf, buf_cache);
	}

	void SortSignsList()
	{
		if (!this->signs.Sort(&SignNameSorter)) return;

		/* Reset the name sorter sort cache */
		this->last_sign = NULL;
	}
};

const Sign *SignList::last_sign = NULL;

struct SignListWindow : Window, SignList {
	SignListWindow(const WindowDesc *desc, WindowNumber window_number) : Window(desc, window_number)
	{
		this->vscroll.cap = 12;
		this->resize.step_height = 10;
		this->resize.height = this->height - 10 * 7; // minimum if 5 in the list

		this->signs.ForceRebuild();
		this->signs.NeedResort();

		this->FindWindowPlacementAndResize(desc);
	}

	virtual void OnPaint()
	{
		BuildSignsList();
		SortSignsList();

		SetVScrollCount(this, this->signs.Length());

		SetDParam(0, this->vscroll.count);
		this->DrawWidgets();

		/* No signs? */
		int y = 16; // offset from top of widget
		if (this->vscroll.count == 0) {
			DrawString(2, y, STR_304A_NONE, TC_FROMSTRING);
			return;
		}

		/* Start drawing the signs */
		for (uint16 i = this->vscroll.pos; i < this->vscroll.cap + this->vscroll.pos && i < this->vscroll.count; i++) {
			const Sign *si = this->signs[i];

			if (si->owner != OWNER_NONE) DrawPlayerIcon(si->owner, 4, y + 1);

			SetDParam(0, si->index);
			DrawString(22, y, STR_SIGN_NAME, TC_YELLOW);
			y += 10;
		}
	}

	virtual void OnClick(Point pt, int widget)
	{
		if (widget == 3) {
			uint32 id_v = (pt.y - 15) / 10;

			if (id_v >= this->vscroll.cap) return;
			id_v += this->vscroll.pos;
			if (id_v >= this->vscroll.count) return;

			const Sign *si = this->signs[id_v];
			ScrollMainWindowToTile(TileVirtXY(si->x, si->y));
		}
	}

	virtual void OnResize(Point new_size, Point delta)
	{
		this->vscroll.cap += delta.y / 10;
	}

	virtual void OnInvalidateData(int data)
	{
		if (data == 0) {
			this->signs.ForceRebuild();
		} else {
			this->signs.ForceResort();
		}
	}
};

static const Widget _sign_list_widget[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,  COLOUR_GREY,     0,    10,     0,    13, STR_00C5,              STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,  RESIZE_RIGHT,  COLOUR_GREY,    11,   345,     0,    13, STR_SIGN_LIST_CAPTION, STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,     RESIZE_LR,  COLOUR_GREY,   346,   357,     0,    13, 0x0,                   STR_STICKY_BUTTON},
{      WWT_PANEL,     RESIZE_RB,  COLOUR_GREY,     0,   345,    14,   137, 0x0,                   STR_NULL},
{  WWT_SCROLLBAR,    RESIZE_LRB,  COLOUR_GREY,   346,   357,    14,   125, 0x0,                   STR_0190_SCROLL_BAR_SCROLLS_LIST},
{  WWT_RESIZEBOX,   RESIZE_LRTB,  COLOUR_GREY,   346,   357,   126,   137, 0x0,                   STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const WindowDesc _sign_list_desc = {
	WDP_AUTO, WDP_AUTO, 358, 138, 358, 138,
	WC_SIGN_LIST, WC_NONE,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_sign_list_widget,
};


void ShowSignList()
{
	AllocateWindowDescFront<SignListWindow>(&_sign_list_desc, 0);
}

static void RenameSign(SignID index, const char *text)
{
	_cmd_text = text;
	DoCommandP(0, index, 0, NULL, CMD_RENAME_SIGN | CMD_MSG(STR_280C_CAN_T_CHANGE_SIGN_NAME));
}

enum QueryEditSignWidgets {
	QUERY_EDIT_SIGN_WIDGET_TEXT = 3,
	QUERY_EDIT_SIGN_WIDGET_OK,
	QUERY_EDIT_SIGN_WIDGET_CANCEL,
	QUERY_EDIT_SIGN_WIDGET_DELETE,
	QUERY_EDIT_SIGN_WIDGET_PREVIOUS = QUERY_EDIT_SIGN_WIDGET_DELETE + 2,
	QUERY_EDIT_SIGN_WIDGET_NEXT,
};

struct SignWindow : QueryStringBaseWindow, SignList {
	SignID cur_sign;

	SignWindow(const WindowDesc *desc, const Sign *si) : QueryStringBaseWindow(31, desc)
	{
		SetBit(_no_scroll, SCROLL_EDIT);
		this->caption = STR_280B_EDIT_SIGN_TEXT;
		this->afilter = CS_ALPHANUMERAL;
		this->LowerWidget(QUERY_EDIT_SIGN_WIDGET_TEXT);

		UpdateSignEditWindow(si);
		this->FindWindowPlacementAndResize(desc);
	}

	~SignWindow()
	{
		ClrBit(_no_scroll, SCROLL_EDIT);
	}

	void UpdateSignEditWindow(const Sign *si)
	{
		char *last_of = &this->edit_str_buf[this->edit_str_size - 1];

		/* Display an empty string when the sign hasnt been edited yet */
		if (si->name != NULL) {
			SetDParam(0, si->index);
			GetString(this->edit_str_buf, STR_SIGN_NAME, last_of);
		} else {
			GetString(this->edit_str_buf, STR_EMPTY, last_of);
		}
		*last_of = '\0';

		this->cur_sign = si->index;
		InitializeTextBuffer(&this->text, this->edit_str_buf, this->edit_str_size, 255);

		this->InvalidateWidget(QUERY_EDIT_SIGN_WIDGET_TEXT);
	}

	virtual void OnPaint()
	{
		SetDParam(0, this->caption);
		this->DrawWidgets();
		this->DrawEditBox(QUERY_EDIT_SIGN_WIDGET_TEXT);
	}

	virtual void OnClick(Point pt, int widget)
	{
		switch (widget) {
			case QUERY_EDIT_SIGN_WIDGET_PREVIOUS: {
				/* Rebuild the sign list */
				this->signs.ForceRebuild();
				this->signs.NeedResort();
				this->BuildSignsList();
				this->SortSignsList();

				/* By default pick the last entry */
				const Sign *si = this->signs[this->signs.Length(
				) - 1];

				for (uint i = 1; i < this->signs.Length(); i++) {
					if (this->cur_sign == this->signs[i]->index) {
						si = this->signs[i - 1];
						break;
					}
				}

				/* Scroll to sign and reopen window */
				ScrollMainWindowToTile(TileVirtXY(si->x, si->y));
				UpdateSignEditWindow(si);
				break;
			}

			case QUERY_EDIT_SIGN_WIDGET_NEXT: {
				/* Rebuild the sign list */
				this->signs.ForceRebuild();
				this->signs.NeedResort();
				this->BuildSignsList();
				this->SortSignsList();

				/* By default pick the last entry */
				const Sign *si = this->signs[this->signs.Length(
				) - 1];

				for (uint i = 0; i < this->signs.Length() - 1; i++) {
					if (this->cur_sign == this->signs[i]->index) {
						si = this->signs[i + 1];
						break;
					}
				}

				/* Scroll to sign and reopen window */
				ScrollMainWindowToTile(TileVirtXY(si->x, si->y));
				UpdateSignEditWindow(si);
				break;
			}

			case QUERY_EDIT_SIGN_WIDGET_TEXT:
				ShowOnScreenKeyboard(this, widget, QUERY_EDIT_SIGN_WIDGET_CANCEL, QUERY_EDIT_SIGN_WIDGET_OK);
				break;

			case QUERY_EDIT_SIGN_WIDGET_DELETE:
				/* Only need to set the buffer to null, the rest is handled as the OK button */
				DeleteTextBufferAll(&this->text);
				/* FALL THROUGH */

			case QUERY_EDIT_SIGN_WIDGET_OK:
				RenameSign(this->cur_sign, this->text.buf);
				/* FALL THROUGH */

			case QUERY_EDIT_SIGN_WIDGET_CANCEL:
				delete this;
				break;
		}
	}

	virtual EventState OnKeyPress(uint16 key, uint16 keycode)
	{
		EventState state = ES_NOT_HANDLED;
		switch (this->HandleEditBoxKey(QUERY_EDIT_SIGN_WIDGET_TEXT, key, keycode, state)) {
			case 1: // Enter pressed, confirms change
				RenameSign(this->cur_sign, this->text.buf);
				/* FALL THROUGH */

			case 2: // ESC pressed, closes window, abandons changes
				delete this;
				break;
		}
		return state;
	}

	virtual void OnMouseLoop()
	{
		this->HandleEditBox(QUERY_EDIT_SIGN_WIDGET_TEXT);
	}
};

static const Widget _query_sign_edit_widgets[] = {
{ WWT_CLOSEBOX, RESIZE_NONE,  COLOUR_GREY,   0,  10,   0,  13, STR_00C5,          STR_018B_CLOSE_WINDOW},
{  WWT_CAPTION, RESIZE_NONE,  COLOUR_GREY,  11, 259,   0,  13, STR_012D,          STR_NULL },
{    WWT_PANEL, RESIZE_NONE,  COLOUR_GREY,   0, 259,  14,  29, STR_NULL,          STR_NULL },
{  WWT_EDITBOX, RESIZE_NONE,  COLOUR_GREY,   2, 257,  16,  27, STR_SIGN_OSKTITLE, STR_NULL },  // Text field
{  WWT_TEXTBTN, RESIZE_NONE,  COLOUR_GREY,   0,  60,  30,  41, STR_012F_OK,       STR_NULL },
{  WWT_TEXTBTN, RESIZE_NONE,  COLOUR_GREY,  61, 120,  30,  41, STR_012E_CANCEL,   STR_NULL },
{  WWT_TEXTBTN, RESIZE_NONE,  COLOUR_GREY, 121, 180,  30,  41, STR_0290_DELETE,   STR_NULL },
{    WWT_PANEL, RESIZE_NONE,  COLOUR_GREY, 181, 237,  30,  41, STR_NULL,          STR_NULL },
{  WWT_TEXTBTN, RESIZE_NONE,  COLOUR_GREY, 238, 248,  30,  41, STR_6819,          STR_PREVIOUS_SIGN_TOOLTIP },
{  WWT_TEXTBTN, RESIZE_NONE,  COLOUR_GREY, 249, 259,  30,  41, STR_681A,          STR_NEXT_SIGN_TOOLTIP },
{ WIDGETS_END },
};

static const WindowDesc _query_sign_edit_desc = {
	190, 170, 260, 42, 260, 42,
	WC_QUERY_STRING, WC_NONE,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET,
	_query_sign_edit_widgets,
};

void HandleClickOnSign(const Sign *si)
{
	if (_ctrl_pressed && si->owner == _local_player) {
		RenameSign(si->index, "");
		return;
	}
	ShowRenameSignWindow(si);
}

void ShowRenameSignWindow(const Sign *si)
{
	/* Delete all other edit windows and the save window */
	DeleteWindowById(WC_QUERY_STRING, 0);
	DeleteWindowById(WC_SAVELOAD, 0);

	new SignWindow(&_query_sign_edit_desc, si);
}