source: smplayer/trunk/src/mplayerwindow.h

/*  smplayer, GUI front-end for mplayer.
    Copyright (C) 2006-2017 Ricardo Villalba <rvm@users.sourceforge.net>

    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/


#ifndef MPLAYERWINDOW_H
#define MPLAYERWINDOW_H

#include <QWidget>
#include <QSize>
#include <QPoint>

#include <QResizeEvent>
#include <QWheelEvent>
#include <QMouseEvent>
#include <QKeyEvent>
#include <QPaintEvent>

#include "config.h"

class QWidget;
class QLabel;
class QKeyEvent;
class QTimer;

#define ZOOM_STEP 0.05
#define ZOOM_MIN 0.5

#define DELAYED_RESIZE 0

// Number of pixels the window has to be dragged at least before dragging starts
#define DRAG_THRESHOLD 4

enum TDragState {NOT_DRAGGING, START_DRAGGING, DRAGGING};

//! Screen is a widget that hides the mouse cursor after some seconds if not moved.

class Screen : public QWidget
{
        Q_OBJECT

public:
        Screen(QWidget* parent = 0, Qt::WindowFlags f = 0);
        ~Screen();

        void setAutoHideCursor(bool b);
        bool autoHideCursor() { return autohide_cursor; };

        void setAutoHideInterval(int milliseconds) { autohide_interval = milliseconds; };
        int autoHideInterval() { return autohide_interval; };

public slots:
        //! Should be called when a file has started. 
        virtual void playingStarted();

        //! Should be called when a file has stopped.
        virtual void playingStopped();

signals:
        void mouseMoved(QPoint);

protected:
        virtual void mouseMoveEvent( QMouseEvent * e );

protected slots:
        virtual void checkMousePos();

private:
        QTimer * check_mouse_timer;
        QPoint mouse_last_position;
        bool autohide_cursor;
        int autohide_interval;
};

//! MplayerLayer can be instructed to not delete the background.

class MplayerLayer : public Screen
{
        Q_OBJECT

public:
        MplayerLayer(QWidget* parent = 0, Qt::WindowFlags f = 0);
        ~MplayerLayer();

#if REPAINT_BACKGROUND_OPTION
        //! If b is true, the background of the widget will be repainted as usual.
        /*! Otherwise the background will not repainted when a video is playing. */
        void setRepaintBackground(bool b);

        //! Return true if repainting the background is allowed.
        bool repaintBackground() { return repaint_background; };
#endif

public slots:
        //! Should be called when a file has started. 
        /*! It's needed to know if the background has to be cleared or not. */
        virtual void playingStarted();
        //! Should be called when a file has stopped.
        virtual void playingStopped();

private:
#if REPAINT_BACKGROUND_OPTION
        bool repaint_background;
#endif
        bool playing;
};


class MplayerWindow : public Screen
{
        Q_OBJECT

public:
        MplayerWindow(QWidget* parent = 0, Qt::WindowFlags f = 0);
        ~MplayerWindow();

        MplayerLayer * videoLayer() { return mplayerlayer; };

        void setResolution( int w, int h);
        void setAspect( double asp);
        void setMonitorAspect(double asp);
        void updateVideoWindow();

#if USE_COLORKEY
        void setColorKey(QColor c);
#endif

        void setOffsetX( int );
        int offsetX();

        void setOffsetY( int );
        int offsetY();

        void setZoom( double );
        double zoom();

        void allowVideoMovement(bool b) { allow_video_movement = b; };
        bool isVideoMovementAllowed() { return allow_video_movement; };

        void delayLeftClick(bool b) { delay_left_click = b; };
        bool isLeftClickDelayed() { return delay_left_click; };

        virtual QSize sizeHint () const;
        virtual QSize minimumSizeHint() const;

        virtual bool eventFilter(QObject *, QEvent *);

#if LOGO_ANIMATION
        bool animatedLogo() { return animated_logo; }
#endif

        void setCornerWidget(QWidget * w);
        QWidget * cornerWidget() { return corner_widget; };

public slots:
        void setLogoVisible(bool b);
        void showLogo() { setLogoVisible(true); };
        void hideLogo() { setLogoVisible(false); };

#if LOGO_ANIMATION
        void setAnimatedLogo(bool b) { animated_logo = b; };
#endif

        void moveLeft();
        void moveRight();
        void moveUp();
        void moveDown();
        void incZoom();
        void decZoom();

        void activateMouseDragTracking(bool active) { mouse_drag_tracking = active; }

#if DELAYED_RESIZE
protected slots:
        void resizeLater();
#endif

protected:
        virtual void retranslateStrings();
        virtual void changeEvent ( QEvent * event ) ;

        virtual void resizeEvent( QResizeEvent * e);
        virtual void mouseReleaseEvent( QMouseEvent * e);
        virtual void mouseDoubleClickEvent( QMouseEvent * e );
        virtual void wheelEvent( QWheelEvent * e );
        void moveLayer( int offset_x, int offset_y );

signals:
    //void rightButtonReleased( QPoint p );
        void doubleClicked();
        void leftClicked();
        void rightClicked();
        void middleClicked();
        void xbutton1Clicked(); // first X button
        void xbutton2Clicked(); // second X button
        void keyPressed(QKeyEvent * e);
        void wheelUp();
        void wheelDown();
        void mouseMovedDiff(QPoint);

protected:
        int video_width, video_height;
        double aspect;
        double monitoraspect;

        MplayerLayer * mplayerlayer;
        QLabel * logo;

        // Zoom and moving
        int offset_x, offset_y;
        double zoom_factor;

        // Original pos and dimensions of the mplayerlayer
        // before zooming or moving
        int orig_x, orig_y;
        int orig_width, orig_height;

        bool allow_video_movement;

#if DELAYED_RESIZE
        QTimer * resize_timer;
#endif

        // Delay left click event
        bool delay_left_click;
        QTimer * left_click_timer;
        bool double_clicked;

#if LOGO_ANIMATION
        bool animated_logo;
#endif

        QWidget * corner_widget;

private:
        TDragState drag_state;
        QPoint start_drag;
        bool mouse_drag_tracking;
};

#endif