cpp/openttd-patchpack/source Files · src/querystring_gui.h

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r15899:3bbe04d427d2 2.4 KiB text/x-c Show Annotation Show as Raw Download as Raw

rubidium

(svn r20593) -Fix: (rlongago, r20547): long ago the service interval was int16, after which is got converted to Date except in the order backup. Much later I copied the savegame snippets from a vehicle and applied that on the order backup. Presto, reading/writing 32 bits (of Date) into 16 bits of ancient style service interval. That would then "spoil" the name pointer and that eventually crashes OpenTTD as it's likely to be an invalid pointer.

/* $Id$ */

/*
 * 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/>.
 */

/** @file querystring_gui.h Base for the GUIs that have an edit box in them. */

#ifndef QUERYSTRING_GUI_H
#define QUERYSTRING_GUI_H

#include "textbuf_gui.h"
#include "window_gui.h"

/**
 * Return values for HandleEditBoxKey
 */
enum HandleEditBoxResult
{
	HEBR_EDITING = 0, // Other key pressed.
	HEBR_CONFIRM,     // Return or enter key pressed.
	HEBR_CANCEL,      // Escape key pressed.
	HEBR_NOT_FOCUSED, // Edit box widget not focused.
};

/**
 * Data stored about a string that can be modified in the GUI
 */
struct QueryString {
	StringID caption;
	Textbuf text;
	const char *orig;
	CharSetFilter afilter;
	bool handled;

	/**
	 * Make sure everything gets initialized properly.
	 */
	QueryString() : orig(NULL)
	{
	}

	/**
	 * Make sure everything gets freed.
	 */
	~QueryString()
	{
		free((void*)this->orig);
	}

private:
	bool HasEditBoxFocus(const Window *w, int wid) const;
public:
	void DrawEditBox(Window *w, int wid);
	void HandleEditBox(Window *w, int wid);
	HandleEditBoxResult HandleEditBoxKey(Window *w, int wid, uint16 key, uint16 keycode, EventState &state);
};

struct QueryStringBaseWindow : public Window, public QueryString {
	char *edit_str_buf;
	const uint16 edit_str_size; ///< maximum length of string (in bytes), including terminating '\0'

	QueryStringBaseWindow(uint16 size) : Window(), edit_str_size(size)
	{
		assert(size != 0);
		this->edit_str_buf = CallocT<char>(size);
	}

	~QueryStringBaseWindow()
	{
		free(this->edit_str_buf);
	}

	void DrawEditBox(int wid);
	void HandleEditBox(int wid);
	HandleEditBoxResult HandleEditBoxKey(int wid, uint16 key, uint16 keycode, EventState &state);
	virtual void OnOpenOSKWindow(int wid);
	virtual void OnOSKInput(int wid) {}
};

void ShowOnScreenKeyboard(QueryStringBaseWindow *parent, int button, int cancel, int ok);
void UpdateOSKOriginalText(const QueryStringBaseWindow *parent, int button);

#endif /* QUERYSTRING_GUI_H */