Improve drawing selected items in Compact/Details View and Places Panel

[dolphin.git] / src / kitemviews / kitemlistwidget.h

diff --git a/src/kitemviews/kitemlistwidget.h b/src/kitemviews/kitemlistwidget.h
index 8a28913b663e6a0345d63a78cafa1add07ee2b78..c086ee6d332e47055631a2e504e758325b9edc70 100644 (file)
--- a/src/kitemviews/kitemlistwidget.h
+++ b/src/kitemviews/kitemlistwidget.h
@@ -32,8 +32,30 @@
 #include <QStyle>
 
 class KItemListSelectionToggle;
 #include <QStyle>
 
 class KItemListSelectionToggle;

+class KItemListView;

 class QPropertyAnimation;
 
 class QPropertyAnimation;
 

+/**
+ * @brief Provides information for creating an instance of KItemListWidget.
+ *
+ * KItemListView only creates KItemListWidget instances for the visible
+ * area. For calculating the required size of all items the expected
+ * size for the invisible items must be accessible. KItemListWidgetInformant
+ * provides this information.
+ */
+class LIBDOLPHINPRIVATE_EXPORT KItemListWidgetInformant
+{
+public:
+    KItemListWidgetInformant();
+    virtual ~KItemListWidgetInformant();
+
+    virtual void calculateItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const = 0;
+
+    virtual qreal preferredRoleColumnWidth(const QByteArray& role,
+                                           int index,
+                                           const KItemListView* view) const = 0;
+};
+

 /**
  * @brief Widget that shows a visible item from the model.
  *
 /**
  * @brief Widget that shows a visible item from the model.
  *


@@ -46,7 +68,7 @@ class LIBDOLPHINPRIVATE_EXPORT KItemListWidget : public QGraphicsWidget
     Q_OBJECT
 
 public:
     Q_OBJECT
 
 public:

-    KItemListWidget(QGraphicsItem* parent);
+    KItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent);

     virtual ~KItemListWidget();
 
     void setIndex(int index);
     virtual ~KItemListWidget();
 
     void setIndex(int index);


@@ -86,6 +108,8 @@ public:
     void setHovered(bool hovered);
     bool isHovered() const;
 
     void setHovered(bool hovered);
     bool isHovered() const;
 

+    void setHoverPosition(const QPointF& pos);
+

     void setAlternateBackground(bool enable);
     bool alternateBackground() const;
 
     void setAlternateBackground(bool enable);
     bool alternateBackground() const;
 


@@ -139,6 +163,11 @@ public:
      */
     virtual QRectF textFocusRect() const;
 
      */
     virtual QRectF textFocusRect() const;
 

+    /**
+     * @return Rectangle around which a selection box should be drawn if the item is selected.
+     */
+    virtual QRectF selectionRect() const = 0;
+

     /**
      * @return Rectangle for the selection-toggle that is used to select or deselect an item.
      *         Per default an empty rectangle is returned which means that no selection-toggle
     /**
      * @return Rectangle for the selection-toggle that is used to select or deselect an item.
      *         Per default an empty rectangle is returned which means that no selection-toggle


@@ -153,6 +182,12 @@ public:
      */
     virtual QRectF expansionToggleRect() const;
 
      */
     virtual QRectF expansionToggleRect() const;
 

+    /**
+     * @return Pixmap that is used when dragging an item. Per default the current state of the
+     *         widget is returned as pixmap.
+     */
+    virtual QPixmap createDragPixmap(const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
+

 signals:
     void roleEditingCanceled(int index, const QByteArray& role, const QVariant& value);
     void roleEditingFinished(int index, const QByteArray& role, const QVariant& value);
 signals:
     void roleEditingCanceled(int index, const QByteArray& role, const QVariant& value);
     void roleEditingFinished(int index, const QByteArray& role, const QVariant& value);


@@ -176,6 +211,8 @@ protected:
      */
     qreal hoverOpacity() const;
 
      */
     qreal hoverOpacity() const;
 

+    const KItemListWidgetInformant* informant() const;
+

 private slots:
     void slotHoverAnimationFinished();
 
 private slots:
     void slotHoverAnimationFinished();
 


@@ -188,6 +225,7 @@ private:
 private:
     Q_PROPERTY(qreal hoverOpacity READ hoverOpacity WRITE setHoverOpacity)
 
 private:
     Q_PROPERTY(qreal hoverOpacity READ hoverOpacity WRITE setHoverOpacity)
 

+    KItemListWidgetInformant* m_informant;

     int m_index;
     bool m_selected;
     bool m_current;
     int m_index;
     bool m_selected;
     bool m_current;


@@ -208,6 +246,12 @@ private:
 
     QByteArray m_editedRole;
 };
 
     QByteArray m_editedRole;
 };

+
+inline const KItemListWidgetInformant* KItemListWidget::informant() const
+{
+    return m_informant;
+}
+

 #endif
 
 
 #endif