File indexing completed on 2025-01-05 03:58:06

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2010-06-29
  * Description : Pressable Button class using QGraphicsItem
  *               based on Frederico Duarte implementation.
  *
  * SPDX-FileCopyrightText: 2010-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "demobutton.h"
 
 // Qt includes
 
 #include <QGraphicsScene>
 
 namespace FaceEngineDemo
 {
 
 class Q_DECL_HIDDEN Button::Private
 {
 public:
 
     explicit Private()
       : isPressed(false)
     {
     }
 
     bool    isPressed;
     QPixmap normal;
     QPixmap pressed;
 };
 
 Button::Button(QGraphicsItem* const parent)
     : QGraphicsItem(parent),
       d(new Private)
 {
 }
 
 Button::Button(const QString& normal, const QString& pressed, QGraphicsItem* const parent)
     : QGraphicsItem(parent),
       d(new Private)
 {
     setPixmap(normal, pressed);
 }
 
 Button::Button(const QPixmap& normal, const QPixmap& pressed, QGraphicsItem* const parent)
    : QGraphicsItem(parent),
      d(new Private)
 {
     setPixmap(normal, pressed);
 }
 
 Button::~Button()
 {
     delete d;
 }
 
 QRectF Button::boundingRect() const
 {
     return d->normal.rect();
 }
 
 void Button::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 {
     Q_UNUSED(option);
     Q_UNUSED(widget);
 
     if (d->isPressed)
     {
         painter->drawPixmap(0, 0, d->pressed);
     }
     else
     {
         painter->drawPixmap(0, 0, d->normal);
     }
 }
 
 void Button::setPixmap(const QString& normal, const QString& pressed)
 {
     if (! d->normal.isNull())
     {
         d->normal.detach();
         d->pressed.detach();
     }
 
     d->normal.load(normal);
     d->pressed.load(pressed);
 }
 
 void Button::setPixmap(const QPixmap& normal, const QPixmap& pressed)
 {
     d->normal  = normal;
     d->pressed = pressed;
 }
 
 void Button::mousePressEvent(QGraphicsSceneMouseEvent* event)
 {
     if (event->button() == Qt::LeftButton)
     {
         if (contains(event->pos()))
         {
             d->isPressed = true;
         }
 
         update();
     }
 }
 
 void Button::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
 {
     if (event->buttons() & Qt::LeftButton)
     {
         if (contains(event->pos()))
         {
             d->isPressed = true;
         }
         else
         {
             d->isPressed = false;
         }
 
         update();
     }
 }
 
 void Button::mouseReleaseEvent(QGraphicsSceneMouseEvent* event)
 {
     if (event->button() == Qt::LeftButton)
     {
         d->isPressed = false;
 
         update();
 
         if (contains(event->pos()))
         {
             Q_EMIT clicked();
         }
     }
 }
 
 } // namespace FaceEngineDemo
 
 #include "moc_demobutton.cpp"