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gui.h

/*
 * Wally - Qt4 wallpaper/background changer
 * Copyright (C) 2009  Antonio Di Monaco <tony@becrux.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#ifndef GUI_H
#define GUI_H

#include <QtCore>
#include <QtGui>

namespace Gui
{
  class EngineButton : public QPushButton
  {
    Q_OBJECT

    int _height;
    QPixmap _pixmap;
    bool _isOver;
    bool _isActive;

    void setup();

  protected:
    void paintEvent(QPaintEvent *event);
    void enterEvent(QEvent *event);
    void leaveEvent(QEvent *event);

  public:
    EngineButton(QWidget *parent = 0);
    EngineButton(const QString &text, QWidget *parent = 0);
    EngineButton(const QIcon &icon, const QString &text, QWidget *parent = 0);
    virtual ~EngineButton() { }

    void setHeight(int height) { _height = height; updateGeometry(); }
    void setPixmap(const QPixmap &pixmap);

    QSize sizeHint() const;
  };

  class ColorButton : public QPushButton
  {
    Q_OBJECT

    QColor _color;

  protected:
    void paintEvent(QPaintEvent *event);
    void nextCheckState();

  public:
    ColorButton(QWidget *parent = 0) : QPushButton(parent), _color(Qt::black) { }
    ColorButton(const QColor &color, QWidget *parent = 0) : QPushButton(parent), _color(color) { }
    virtual ~ColorButton() { }

    void setColor(const QColor &color);

    QColor color() const { return _color; }

    QSize sizeHint() const { return QSize(90,QPushButton::sizeHint().height()); }

  signals:
    void colorChanged(const QColor &color);
  };

  class Dialog : public QDialog
  {
    Q_OBJECT

  public:
    enum Position { CenterOfScreen, TopOfScreen };

  private:
    bool fired;
    Position _position;

  protected:
    void showEvent(QShowEvent *event);
    void closeEvent(QCloseEvent *event);

  public:
    Dialog(Position position, QWidget *parent = 0,
           Qt::WindowFlags f = 0) :
      QDialog(parent,f | Qt::WindowSystemMenuHint), fired(false), _position(position)
       { setWindowModality(Qt::ApplicationModal);
         setMaximumWidth(QApplication::desktop()->availableGeometry().width() * 9 / 10);
         setMaximumHeight(QApplication::desktop()->availableGeometry().height() * 8 / 10); }
    virtual ~Dialog() { }

  signals:
    void executed();
    void closed();
  };

  class ScrollableButtons : public QFrame
  {
    Q_OBJECT

    bool firstShowEvent;
    QPushButton *buttonUp;
    QPushButton *buttonDown;
    QScrollArea *scrollArea;
    QVBoxLayout *buttonLayout;
    QButtonGroup *buttonGroup;

  private slots:
    void on_buttonUp_clicked();
    void on_buttonDown_clicked();
    void on_scrollBar_valueChanged(int value);

  protected:
    void resizeEvent(QResizeEvent *event);
    void showEvent(QShowEvent *event);

  public:
    ScrollableButtons(QWidget *parent = 0);
    virtual ~ScrollableButtons() { }

    void addButton(QAbstractButton *button);
    void addButton(QAbstractButton *button, int id);
    QAbstractButton *button(int id) const;
    QList<QAbstractButton *> buttons() const;
    QAbstractButton *checkedButton() const;
    int checkedId() const;
    bool exclusive() const;
    int id(QAbstractButton *button) const;
    void insertButton(int index, QAbstractButton *button);
    void insertButton(int index, QAbstractButton *button, int id);
    void removeButton(QAbstractButton *button);
    void setExclusive(bool exclusive);
    void setId(QAbstractButton *button, int id);

  signals:
    void buttonClicked(QAbstractButton *button);
    void buttonClicked(int id);
    void buttonPressed(QAbstractButton *button);
    void buttonPressed(int id);
    void buttonReleased(QAbstractButton *button);
    void buttonReleased(int id);

  public slots:
    void scrollAllUp() { scrollArea->verticalScrollBar()->setValue(scrollArea->verticalScrollBar()->minimum()); }
    void scrollAllDown() { scrollArea->verticalScrollBar()->setValue(scrollArea->verticalScrollBar()->maximum()); }
    void scrollToButton(QAbstractButton *button) { scrollArea->ensureWidgetVisible(button); }
    void scrollToSelected();
  };

  class ShadowedLabel : public QLabel
  {
    QColor _labelColor;
    QColor _shadowColor;

  protected:
    void paintEvent(QPaintEvent *event);

  public:
    ShadowedLabel(QWidget *parent = 0) :
      QLabel(parent), _labelColor(Qt::white), _shadowColor(Qt::black) { }
    ShadowedLabel(const QString &text, QWidget *parent = 0) :
      QLabel(text,parent), _labelColor(Qt::white), _shadowColor(Qt::black) { }
    virtual ~ShadowedLabel() { }

    void setLabelColor(const QColor &color);
    void setShadowColor(const QColor &color);

    QColor labelColor() const { return _labelColor; }
    QColor shadowColor() const { return _shadowColor; }

    QSize sizeHint() const;
  };

  class ShrinkableTableWidget : public QTableWidget
  {
    Q_OBJECT

  public:
    ShrinkableTableWidget(QWidget *parent = 0);
    ShrinkableTableWidget(int rows, int columns, QWidget *parent = 0);
    virtual ~ShrinkableTableWidget() { }

    QSize sizeHint() const;
  };
}

#endif

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