a09/button.cpp at master · ProgAvancada/a09 · GitHub

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#include "button.h"
#include "ofMain.h"

Button::Button(float px, float py, float width, float height)
	: x(px), y(py), w(width), h(height), isDown(false)
{
}


void Button::setup()
{

}
void Button::draw()
{
	ofSetColor(isDown ? 220 : 255);
	ofDrawRectangle(x, y, w, h);
}

bool Button::isHovered()
{
	float mx = ofGetMouseX();
	float my = ofGetMouseY();

	return (mx >= x && mx <= x + w &&
		my >= y && my <= y + h);
}

void Button::update()
{
	if (isDown && !ofGetMousePressed(OF_MOUSE_BUTTON_1))
	{
		fireButtonClicked();
		isDown = false;
		return;
	}

	if (!isDown && isHovered() && ofGetMousePressed(OF_MOUSE_BUTTON_1))
	{
		isDown = true;
	}
}

void Button::fireButtonClicked()
{
    if (onClick == nullptr) {
        return;
    }

    onClick(*this);
}

void Button::setObserver(std::function<void(const Button&)> onClick) {
    this->onClick = onClick;
}