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

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r24422:3fa67b2abcd2 3.2 KiB text/x-c Show Annotation Show as Raw Download as Raw

Patric Stout

Fix: change the working-dir searchpath when using '-c'

Basically, with '-c' you now create a sandbox. It will still use
your personal-dir and global-dir to find files you installed there,
but all new files are stored with a base folder identical to the
folder the configuration is in.

This is a bit of an old bug, that we many have tried to solve in
various of different ways. The code has grown sufficiently complex
that it is hard to see what consequences of actions are. This is
in my opinion the most harmless solution, while increasing the
usefulness of the '-c' flag.

In essence, the problem was that empty folders were always created
in the directory where the configuration was, but as that directory
wasn't added to any searchpath, files weren't stored there, unless
by accident it was a folder already on the searchpath. For example,
if you do './openttd -c local.cfg', it did work as expected. But
in the more generic variant, it did not.

With this patch, you can run './openttd -c /new/folder/local.cfg',
and it will create and prepare that folder to receive new files.

'content_download' is also stored in the directory the
configuration is in; this was already the case. Important to
note that there is only one search-path for 'content_download'.
In other words, when using '-c', it will not look in '~/.openttd'
inside the 'content_download' folder.

/*
 * 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 textbuf_type.h Stuff related to text buffers. */

#ifndef TEXTBUF_TYPE_H
#define TEXTBUF_TYPE_H

#include "string_type.h"
#include "strings_type.h"
#include "string_base.h"

/**
 * Return values for Textbuf::HandleKeypress
 */
enum HandleKeyPressResult
{
	HKPR_EDITING,     ///< Textbuf content changed.
	HKPR_CURSOR,      ///< Non-text change, e.g. cursor position.
	HKPR_CONFIRM,     ///< Return or enter key pressed.
	HKPR_CANCEL,      ///< Escape key pressed.
	HKPR_NOT_HANDLED, ///< Key does not affect editboxes.
};

/** Helper/buffer for input fields. */
struct Textbuf {
	CharSetFilter afilter;    ///< Allowed characters
	char * const buf;         ///< buffer in which text is saved
	uint16 max_bytes;         ///< the maximum size of the buffer in bytes (including terminating '\0')
	uint16 max_chars;         ///< the maximum size of the buffer in characters (including terminating '\0')
	uint16 bytes;             ///< the current size of the string in bytes (including terminating '\0')
	uint16 chars;             ///< the current size of the string in characters (including terminating '\0')
	uint16 pixels;            ///< the current size of the string in pixels
	bool caret;               ///< is the caret ("_") visible or not
	uint16 caretpos;          ///< the current position of the caret in the buffer, in bytes
	uint16 caretxoffs;        ///< the current position of the caret in pixels
	uint16 markpos;           ///< the start position of the marked area in the buffer, in bytes
	uint16 markend;           ///< the end position of the marked area in the buffer, in bytes
	uint16 markxoffs;         ///< the start position of the marked area in pixels
	uint16 marklength;        ///< the length of the marked area in pixels

	explicit Textbuf(uint16 max_bytes, uint16 max_chars = UINT16_MAX);
	~Textbuf();

	void Assign(StringID string);
	void Assign(const char *text);
	void CDECL Print(const char *format, ...) WARN_FORMAT(2, 3);

	void DeleteAll();
	bool InsertClipboard();

	bool InsertChar(WChar key);
	bool InsertString(const char *str, bool marked, const char *caret = nullptr, const char *insert_location = nullptr, const char *replacement_end = nullptr);

	bool DeleteChar(uint16 keycode);
	bool MovePos(uint16 keycode);

	HandleKeyPressResult HandleKeyPress(WChar key, uint16 keycode);

	bool HandleCaret();
	void UpdateSize();

	void DiscardMarkedText(bool update = true);

private:
	StringIterator *char_iter;

	bool CanDelChar(bool backspace);

	void DeleteText(uint16 from, uint16 to, bool update);

	void UpdateStringIter();
	void UpdateWidth();
	void UpdateCaretPosition();
	void UpdateMarkedText();
};

#endif /* TEXTBUF_TYPE_H */