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/**
* Copyright (c) 2007-2012, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file xterm_mouse.hh
*/
#ifndef xterm_mouse_hh
#define xterm_mouse_hh
#include "config.h"
#if defined HAVE_NCURSESW_CURSES_H
# include <ncursesw/curses.h>
#elif defined HAVE_NCURSESW_H
# include <ncursesw.h>
#elif defined HAVE_NCURSES_CURSES_H
# include <ncurses/curses.h>
#elif defined HAVE_NCURSES_H
# include <ncurses.h>
#elif defined HAVE_CURSES_H
# include <curses.h>
#else
# error "SysV or X/Open-compatible Curses header file required"
#endif
/**
* Base class for delegates of the xterm_mouse class.
*/
class mouse_behavior {
public:
virtual ~mouse_behavior() = default;
/**
* Callback used to process mouse events.
*
* @param button The button that was pressed or released. This will
* be one of the XT_BUTTON or XT_SCROLL constants in the xterm_mouse
* class.
* @param x The X coordinate where the event occurred.
* @param y The Y coordinate where the event occurred.
*/
virtual void mouse_event(int button, bool release, int x, int y) = 0;
};
/**
* Class that handles xterm mouse events coming through the ncurses interface.
*/
class xterm_mouse {
public:
static const int XT_BUTTON1 = 0;
static const int XT_BUTTON2 = 1;
static const int XT_BUTTON3 = 2;
static const int XT_DRAG_FLAG = 32;
static const int XT_SCROLL_WHEEL_FLAG = 64;
static const int XT_SCROLL_UP = XT_SCROLL_WHEEL_FLAG | XT_BUTTON1;
static const int XT_SCROLL_DOWN = XT_SCROLL_WHEEL_FLAG | XT_BUTTON2;
static const int XT_BUTTON__MASK
= XT_SCROLL_WHEEL_FLAG | XT_BUTTON1 | XT_BUTTON2 | XT_BUTTON3;
static const char* XT_TERMCAP;
static const char* XT_TERMCAP_TRACKING;
static const char* XT_TERMCAP_SGR;
/**
* @return True if the user's terminal supports xterm-mouse events.
*/
static bool is_available();
~xterm_mouse()
{
if (this->is_enabled()) {
set_enabled(false);
}
}
/**
* @param enabled True if xterm mouse support should be enabled in the
* terminal.
*/
void set_enabled(bool enabled);
/**
* @return True if xterm mouse support is enabled, false otherwise.
*/
bool is_enabled() const { return this->xm_enabled; }
/**
* @param mb The delegate to send mouse events to.
*/
void set_behavior(mouse_behavior* mb) { this->xm_behavior = mb; }
mouse_behavior* get_behavior() { return this->xm_behavior; }
/**
* Handle a KEY_MOUSE character from ncurses.
* @param ch unused
*/
void handle_mouse();
private:
bool xm_enabled{false};
mouse_behavior* xm_behavior{nullptr};
};
#endif
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