The custom context menu already contains entries, like for enabling auto-
refresh. It can certainly be extended in the implementation of the widget.
- Note: Widgets deriving from this class should connect slotActiveMonitorChanged
- to the appropriate signal.
-
If you intend to write an own widget inheriting from this one, please read
the comments on the unimplemented methods carefully. They are not only here
for optical amusement, but also contain important information.
class QMenu;
-class Monitor;
-class Render;
-
class AbstractScopeWidget : public QWidget
{
Q_OBJECT
public:
- AbstractScopeWidget(Monitor *projMonitor, Monitor *clipMonitor, QWidget *parent = 0);
+ /** trackMouse enables mouse tracking; The variables m_mousePos and m_mouseWithinWidget will be set
+ if mouse tracking is enabled. See also signalMousePositionChanged(). */
+ AbstractScopeWidget(bool trackMouse = false, QWidget *parent = 0);
virtual ~AbstractScopeWidget(); // Must be virtual because of inheritance, to avoid memory leaks
+
+
+ enum RescaleDirection { North, Northeast, East, Southeast };
+
+
QPalette m_scopePalette;
+ /** Initializes widget settings (reads configuration).
+ Has to be called in the implementing object. */
+ virtual void init();
+
+ /** Tell whether this scope has auto-refresh enabled. Required for determining whether
+ new data (e.g. an image frame) has to be delivered to this widget. */
+ bool autoRefreshEnabled();
+
+ ///// Unimplemented /////
+
virtual QString widgetName() const = 0;
-protected:
///// Variables /////
+ static const QColor colHighlightLight;
+ static const QColor colHighlightDark;
+ static const QColor colDarkWhite;
+
+ static const QPen penThick;
+ static const QPen penThin;
+ static const QPen penLight;
+ static const QPen penLightDots;
+ static const QPen penLighter;
+ static const QPen penDark;
+ static const QPen penDarkDots;
+ static const QPen penBackground;
+
+ static const QString directions[]; // Mainly for debug output
- Monitor *m_projMonitor;
- Monitor *m_clipMonitor;
- Render *m_activeRender;
+protected:
+ ///// Variables /////
/** The context menu. Feel free to add new entries in your implementation. */
QMenu *m_menu;
+
+ /** Enables auto refreshing of the scope.
+ This is when fresh data is incoming.
+ Resize events always force a recalculation. */
QAction *m_aAutoRefresh;
+
+ /** Realtime rendering. Should be disabled if it is not supported.
+ Use the accelerationFactor variable passed to the render functions as a hint of
+ how many times faster the scope should be calculated. */
QAction *m_aRealtime;
+ /** The mouse position; Updated when the mouse enters the widget
+ AND mouse tracking has been enabled. */
+ QPoint m_mousePos;
+ /** Knows whether the mouse currently lies within the widget or not.
+ Can e.g. be used for drawing a HUD only when the mouse is in the widget. */
+ bool m_mouseWithinWidget;
+
/** Offset from the widget's borders */
const uchar offset;
+ /** The rect on the widget we're painting in.
+ Can be used by the implementing widget, e.g. in the render methods.
+ Is updated when necessary (size changes). */
QRect m_scopeRect;
+
+ /** Images storing the calculated layers. Will be used on repaint events. */
QImage m_imgHUD;
QImage m_imgScope;
QImage m_imgBackground;
+ /** The acceleration factors can be accessed also by other renderer tasks,
+ e.g. to display the scope's acceleration factor in the HUD renderer. */
+ int m_accelFactorHUD;
+ int m_accelFactorScope;
+ int m_accelFactorBackground;
+
+ /** Reads the widget's configuration.
+ Can be extended in the implementing subclass (make sure to run readConfig as well). */
+ virtual void readConfig();
+ /** Writes the widget configuration.
+ Implementing widgets have to implement an own method and run it in their destructor. */
+ void writeConfig();
+ /** Identifier for the widget's configuration. */
+ QString configName();
+
///// Unimplemented Methods /////
- /** Where on the widget we can paint in */
+ /** Where on the widget we can paint in.
+ May also update other variables, like m_scopeRect or custom ones,
+ that have to change together with the widget's size. */
virtual QRect scopeRect() = 0;
- /** @brief HUD renderer.
- Must emit signalHUDRenderingFinished().
- Should */
- virtual QImage renderHUD() = 0;
- /** @brief Scope renderer. Must emit signalScopeRenderingFinished(). */
- virtual QImage renderScope() = 0;
- /** @brief Background renderer. Must emit signalBackgroundRenderingFinished(). */
- virtual QImage renderBackground() = 0;
-
- /** Must return true if the HUD layer depends on the input monitor.
- If it does not, then it does not need to be re-calculated when
- a new frame from the monitor is incoming. */
+ /** @brief HUD renderer. Must emit signalHUDRenderingFinished(). @see renderScope */
+ virtual QImage renderHUD(uint accelerationFactor) = 0;
+ /** @brief Scope renderer. Must emit signalScopeRenderingFinished()
+ when calculation has finished, to allow multi-threading.
+ accelerationFactor hints how much faster than usual the calculation should be accomplished, if possible. */
+ virtual QImage renderScope(uint accelerationFactor) = 0;
+ /** @brief Background renderer. Must emit signalBackgroundRenderingFinished(). @see renderScope */
+ virtual QImage renderBackground(uint accelerationFactor) = 0;
+
+ /** Must return true if the HUD layer depends on the input data.
+ If it does not, then it does not need to be re-calculated when
+ fresh data is incoming. */
virtual bool isHUDDependingOnInput() const = 0;
/** @see isHUDDependingOnInput() */
virtual bool isScopeDependingOnInput() const = 0;
/** @see isHUDDependingOnInput() */
virtual bool isBackgroundDependingOnInput() const = 0;
- ///// Methods /////
+ ///// Can be reimplemented /////
+ /** Calculates the acceleration factor to be used by the render thread.
+ This method can be refined in the subclass if required. */
+ virtual uint calculateAccelFactorHUD(uint oldMseconds, uint oldFactor);
+ virtual uint calculateAccelFactorScope(uint oldMseconds, uint oldFactor);
+ virtual uint calculateAccelFactorBackground(uint oldMseconds, uint oldFactor);
- void mouseReleaseEvent(QMouseEvent *);
+ /** The Abstract Scope will try to detect the movement direction when dragging on the widget with the mouse.
+ As soon as the direction is determined it will execute this method. Can be used e.g. for re-scaling content.
+ This is just a dummy function, re-implement to add functionality. */
+ virtual void handleMouseDrag(const QPoint movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers);
+
+ ///// Reimplemented /////
+
+ void mouseMoveEvent(QMouseEvent *event);
+ void mousePressEvent(QMouseEvent *event);
+ void mouseReleaseEvent(QMouseEvent *event);
+ void leaveEvent(QEvent *);
void paintEvent(QPaintEvent *);
void resizeEvent(QResizeEvent *);
+ void showEvent(QShowEvent *); // Called when the widget is activated via the Menu entry
+ // void raise(); // Called only when manually calling the event -> useless
+
+
+protected slots:
+ /** Forces an update of all layers. */
+ void forceUpdate(bool doUpdate = true);
+ void forceUpdateHUD();
+ void forceUpdateScope();
+ void forceUpdateBackground();
+ void slotAutoRefreshToggled(bool);
signals:
- void signalHUDRenderingFinished(uint mseconds);
- void signalScopeRenderingFinished(uint mseconds);
- void signalBackgroundRenderingFinished(uint mseconds);
+ /** mseconds represent the time taken for the calculation,
+ accelerationFactor is the acceleration factor that has been used for this calculation. */
+ void signalHUDRenderingFinished(uint mseconds, uint accelerationFactor);
+ void signalScopeRenderingFinished(uint mseconds, uint accelerationFactor);
+ void signalBackgroundRenderingFinished(uint mseconds, uint accelerationFactor);
+
+ /** For the mouse position itself see m_mousePos.
+ To check whether the mouse has leaved the widget, see m_mouseWithinWidget.
+ This signal is typically connected to forceUpdateHUD(). */
+ void signalMousePositionChanged();
+
+ /** Do we need the renderer to send its frames to us? */
+ void requestAutoRefresh(bool);
private:
- /** Counts the number of frames that have been rendered in the active monitor.
- The frame number will be reset when the calculation starts for the current frame. */
+ /** Counts the number of data frames that have been rendered in the active monitor.
+ The frame number will be reset when the calculation starts for the current data set. */
QAtomicInt m_newHUDFrames;
QAtomicInt m_newScopeFrames;
QAtomicInt m_newBackgroundFrames;
QAtomicInt m_newScopeUpdates;
QAtomicInt m_newBackgroundUpdates;
+ /** The semaphores ensure that the QFutures for the HUD/Scope/Background threads cannot
+ be assigned a new thread while it is still running. (Could cause deadlocks and other
+ nasty things known from parallelism.) */
QSemaphore m_semaphoreHUD;
QSemaphore m_semaphoreScope;
QSemaphore m_semaphoreBackground;
QFuture<QImage> m_threadBackground;
bool initialDimensionUpdateDone;
+ bool m_requestForcedUpdate;
+
+ QImage m_scopeImage;
+
+ QString m_widgetName;
+
void prodHUDThread();
void prodScopeThread();
void prodBackgroundThread();
-private slots:
- /** @brief Must be called when the active monitor has shown a new frame.
- This slot must be connected in the implementing class, it is *not*
- done in this abstract class. */
- void slotActiveMonitorChanged(bool isClipMonitor);
+ ///// Movement detection /////
+ const int m_rescaleMinDist;
+ const float m_rescaleVerticalThreshold;
+
+ bool m_rescaleActive;
+ bool m_rescalePropertiesLocked;
+ bool m_rescaleFirstRescaleDone;
+ short m_rescaleScale;
+ Qt::KeyboardModifiers m_rescaleModifiers;
+ RescaleDirection m_rescaleDirection;
+ QPoint m_rescaleStartPoint;
+
+
+protected slots:
void customContextMenuRequested(const QPoint &pos);
+ /** To be called when a new frame has been received.
+ The scope then decides whether and when it wants to recalculate the scope, depending
+ on whether it is currently visible and whether a calculation thread is already running. */
void slotRenderZoneUpdated();
- void slotHUDRenderingFinished(uint mseconds);
- void slotScopeRenderingFinished(uint mseconds);
- void slotBackgroundRenderingFinished(uint mseconds);
+ /** The following slots are called when rendering of a component has finished. They e.g. update
+ the widget and decide whether to immediately restart the calculation thread. */
+ void slotHUDRenderingFinished(uint mseconds, uint accelerationFactor);
+ void slotScopeRenderingFinished(uint mseconds, uint accelerationFactor);
+ void slotBackgroundRenderingFinished(uint mseconds, uint accelerationFactor);
+
+ /** Resets the acceleration factors to 1 when realtime rendering is disabled. */
+ void slotResetRealtimeFactor(bool realtimeChecked);
};
projects / kdenlive / blobdiff