button.cpp

/*
* libtcod 1.6.3
* Copyright (c) 2008,2009,2010,2012,2013,2016,2017 Jice & Mingos & rmtew
* 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.
*     * The name of Jice or Mingos may not be used to endorse or promote products
*       derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JICE, MINGOS AND RMTEW ``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 JICE, MINGOS OR RMTEW 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.
*/
#include <button.hpp>

#include <string.h>

Button::Button(const char *label,const char *tip,widget_callback_t cbk, void *userData) 
	: pressed(false),label(NULL) {
	if ( label != NULL ) {
		setLabel(label);
	}
	if ( tip != NULL ) setTip(tip);
	this->x=0;
	this->y=0;
	this->userData=userData;
	this->cbk=cbk;
}

Button::Button(int x,int y,int width, int height,const char *label,const char *tip,widget_callback_t cbk, void *userData) 
	: pressed(false), label(NULL) {
	if ( label != NULL ) setLabel(label);
	if ( tip != NULL ) setTip(tip);
	w=width;
	h=height;
	this->x=x;
	this->y=y;
	this->userData=userData;
	this->cbk=cbk;
}

Button::~Button() {
	if ( label ) free(label);
}

void Button::setLabel(const char *newLabel) {
	if ( label ) free(label);
	label=TCOD_strdup(newLabel);
}

void Button::render() {
	con->setDefaultBackground(mouseIn ? backFocus : back);
	con->setDefaultForeground(mouseIn ? foreFocus : fore);
	if ( w > 0 && h > 0 ) con->rect(x,y,w,h,true,TCOD_BKGND_SET);
	if ( label ) {
		if ( pressed && mouseIn ) {
			con->printEx(x+w/2,y,TCOD_BKGND_NONE,TCOD_CENTER,"-%s-",label);
		} else {
			con->printEx(x+w/2,y,TCOD_BKGND_NONE,TCOD_CENTER,label);
		}
	}
}

void Button::computeSize() {
	if ( label != NULL ) {
		w=(int)(strlen(label)+2);
	} else {
		w=4;
	}
	h=1;	
}

void Button::expand(int width, int height) {
	if ( w < width ) w = width;
}

void Button::onButtonPress() {
	pressed=true;
}

void Button::onButtonRelease() {
	pressed=false;
}

void Button::onButtonClick() {
	if ( cbk ) cbk(this,userData);
}