text: /*******************************************************************************
   * MIT License
   *
   * This file is part of the SmallColorPicker project:
   * https://github.com/wxmaper/SmallColorPicker
   *
   * Copyright (c) 2019 Aleksandr Kazantsev (https://wxmaper.ru)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #ifndef WIDGET_H
  #define WIDGET_H
  
  #include <QColor>
  #include <QVector>
  #include <QLabel>
  #include <QWidget>
  
  namespace Ui {
  class ColorPickerWidget;
  }
  
  class ScreenWidget : public QWidget
  {
      Q_OBJECT
  
  public:
      explicit ScreenWidget(QWidget *parent = nullptr);
      ~ScreenWidget();
  };
  
  class MagnifierWidget : public QLabel
  {
      Q_OBJECT
  
  public:
      explicit MagnifierWidget(QWidget *parent = nullptr);
      ~MagnifierWidget();
  
      void update(QScreen *screen,
                  const QPoint &cursorPosition,
                  const QColor &pixelColor);
  };
  
  class Widget : public QWidget
  {
      Q_OBJECT
  
  public:
      explicit Widget(QWidget *parent = nullptr);
      ~Widget();
  
      bool eventFilter(QObject *watched, QEvent *event) Q_DECL_OVERRIDE;
      QColor grabPixelColor(QScreen *screen, const QPoint &position);
      void updatePixelColor(QWidget *screenWidget);
      void pickColor(QScreen *screen, const QPoint &position);
      void updateClipboard(const QString &colorName);
      void deleteScreenWidgets();
  
  private slots:
      void on_pushButton_activate_clicked();
      void on_pushButton_lighter_clicked();
      void on_pushButton_main_clicked();
      void on_pushButton_darker_clicked();
  
  private:
      Ui::ColorPickerWidget *ui;
      MagnifierWidget *m_magnifier;
      QVector<QWidget*> m_screenWidgets;
      QColor m_color;
  };
  
  #endif // WIDGET_H
  