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140 lines
4.4 KiB
C++
140 lines
4.4 KiB
C++
/**
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* Copyright (c) 2007-2012, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file xterm_mouse.hh
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*/
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#ifndef xterm_mouse_hh
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#define xterm_mouse_hh
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#include "config.h"
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#if defined HAVE_NCURSESW_CURSES_H
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# include <ncursesw/curses.h>
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#elif defined HAVE_NCURSESW_H
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# include <ncursesw.h>
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#elif defined HAVE_NCURSES_CURSES_H
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# include <ncurses/curses.h>
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#elif defined HAVE_CURSESW_H
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# include <cursesw.h>
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#elif defined HAVE_NCURSES_H
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# include <ncurses.h>
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#elif defined HAVE_CURSES_H
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# include <curses.h>
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#else
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# error "SysV or X/Open-compatible Curses header file required"
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#endif
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/**
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* Base class for delegates of the xterm_mouse class.
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*/
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class mouse_behavior {
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public:
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virtual ~mouse_behavior() = default;
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/**
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* Callback used to process mouse events.
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*
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* @param button The button that was pressed or released. This will
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* be one of the XT_BUTTON or XT_SCROLL constants in the xterm_mouse
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* class.
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* @param x The X coordinate where the event occurred.
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* @param y The Y coordinate where the event occurred.
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*/
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virtual void mouse_event(int button, bool release, int x, int y) = 0;
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};
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/**
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* Class that handles xterm mouse events coming through the ncurses interface.
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*/
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class xterm_mouse {
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public:
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static const int XT_BUTTON1 = 0;
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static const int XT_BUTTON2 = 1;
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static const int XT_BUTTON3 = 2;
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static const int XT_DRAG_FLAG = 32;
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static const int XT_SCROLL_WHEEL_FLAG = 64;
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static const int XT_SCROLL_UP = XT_SCROLL_WHEEL_FLAG | XT_BUTTON1;
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static const int XT_SCROLL_DOWN = XT_SCROLL_WHEEL_FLAG | XT_BUTTON2;
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static const int XT_BUTTON__MASK
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= XT_SCROLL_WHEEL_FLAG | XT_BUTTON1 | XT_BUTTON2 | XT_BUTTON3;
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static const int XT_MODIFIER_SHIFT = 4;
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static const int XT_MODIFIER_META = 8;
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static const int XT_MODIFIER_CTRL = 16;
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static const int XT_MODIFIER_MASK
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= XT_MODIFIER_SHIFT | XT_MODIFIER_META | XT_MODIFIER_CTRL;
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static const char* XT_TERMCAP;
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static const char* XT_TERMCAP_TRACKING;
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static const char* XT_TERMCAP_SGR;
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/**
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* @return True if the user's terminal supports xterm-mouse events.
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*/
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static bool is_available();
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~xterm_mouse()
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{
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if (this->is_enabled()) {
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set_enabled(false);
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}
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}
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/**
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* @param enabled True if xterm mouse support should be enabled in the
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* terminal.
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*/
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void set_enabled(bool enabled);
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/**
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* @return True if xterm mouse support is enabled, false otherwise.
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*/
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bool is_enabled() const { return this->xm_enabled; }
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/**
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* @param mb The delegate to send mouse events to.
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*/
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void set_behavior(mouse_behavior* mb) { this->xm_behavior = mb; }
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mouse_behavior* get_behavior() { return this->xm_behavior; }
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/**
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* Handle a KEY_MOUSE character from ncurses.
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* @param ch unused
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*/
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void handle_mouse();
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private:
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bool xm_enabled{false};
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mouse_behavior* xm_behavior{nullptr};
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};
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#endif
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