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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/>.
*/
/** @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_type.h"
#include "textbuf_gui.h"
#include "window_gui.h"
/**
* Data stored about a string that can be modified in the GUI
*/
struct QueryString {
/* Special actions when hitting ENTER or ESC. (only keyboard, not OSK) */
static const int ACTION_NOTHING = -1; ///< Nothing.
static const int ACTION_DESELECT = -2; ///< Deselect editbox.
static const int ACTION_CLEAR = -3; ///< Clear editbox.
StringID caption;
int ok_button; ///< Widget button of parent window to simulate when pressing OK in OSK.
int cancel_button; ///< Widget button of parent window to simulate when pressing CANCEL in OSK.
Textbuf text;
const char *orig;
bool handled;
/**
* Initialize string.
* @param size Maximum size in bytes.
* @param chars Maximum size in chars.
*/
QueryString(uint16 size, uint16 chars = UINT16_MAX) : ok_button(ACTION_NOTHING), cancel_button(ACTION_DESELECT), text(size, chars), orig(nullptr)
{
}
/**
* Make sure everything gets freed.
*/
~QueryString()
{
free(this->orig);
}
public:
void DrawEditBox(const Window *w, int wid) const;
void ClickEditBox(Window *w, Point pt, int wid, int click_count, bool focus_changed);
void HandleEditBox(Window *w, int wid);
Point GetCaretPosition(const Window *w, int wid) const;
Rect GetBoundingRect(const Window *w, int wid, const char *from, const char *to) const;
const char *GetCharAtPosition(const Window *w, int wid, const Point &pt) const;
/**
* Get the current text.
* @return Current text.
*/
const char *GetText() const
{
return this->text.buf;
}
/**
* Get the position of the caret in the text buffer.
* @return Pointer to the caret in the text buffer.
*/
const char *GetCaret() const
{
return this->text.buf + this->text.caretpos;
}
/**
* Get the currently marked text.
* @param[out] length Length of the marked text.
* @return Beginning of the marked area or nullptr if no text is marked.
*/
const char *GetMarkedText(size_t *length) const
{
if (this->text.markend == 0) return nullptr;
*length = this->text.markend - this->text.markpos;
return this->text.buf + this->text.markpos;
}
};
void ShowOnScreenKeyboard(Window *parent, int button);
void UpdateOSKOriginalText(const Window *parent, int button);
bool IsOSKOpenedFor(const Window *w, int button);
#endif /* QUERYSTRING_GUI_H */
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