/***************************************************************************
* Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com> *
* *
- * Based on the Itemviews NG project from Trolltech Labs: *
- * http://qt.gitorious.org/qt-labs/itemviews-ng *
+ * Based on the Itemviews NG project from Trolltech Labs *
* *
* 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 *
#ifndef KITEMLISTWIDGET_H
#define KITEMLISTWIDGET_H
-#include <libdolphin_export.h>
-
-#include <kitemviews/kitemliststyleoption.h>
+#include "dolphin_export.h"
+#include "kitemviews/kitemliststyleoption.h"
+#include <QBitArray>
#include <QGraphicsWidget>
+#include <QStyle>
+class KItemListSelectionToggle;
+class KItemListView;
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 DOLPHIN_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.
*
* All properties are set by KItemListView, for each property there is a corresponding
* virtual protected method that allows to react on property changes.
*/
-class LIBDOLPHINPRIVATE_EXPORT KItemListWidget : public QGraphicsWidget
+class DOLPHIN_EXPORT KItemListWidget : public QGraphicsWidget
{
Q_OBJECT
public:
- KItemListWidget(QGraphicsItem* parent);
- virtual ~KItemListWidget();
+ KItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent);
+ ~KItemListWidget() override;
void setIndex(int index);
int index() const;
QHash<QByteArray, QVariant> data() const;
/**
- * Draws the hover-bounding-rectangle if the item is hovered. Overwrite this method
+ * Draws the hover-rectangle if the item is hovered. Overwrite this method
* to show the data of the custom model provided by KItemListWidget::data().
* @reimp
*/
- virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
+ void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = nullptr) override;
void setVisibleRoles(const QList<QByteArray>& roles);
QList<QByteArray> visibleRoles() const;
- void setVisibleRolesSizes(const QHash<QByteArray, QSizeF> rolesSizes);
- QHash<QByteArray, QSizeF> visibleRolesSizes() const;
+ /**
+ * Sets the width of a role that should be used if the alignment of the content
+ * should be done in columns.
+ */
+ void setColumnWidth(const QByteArray& role, qreal width);
+ qreal columnWidth(const QByteArray& role) const;
void setStyleOption(const KItemListStyleOption& option);
const KItemListStyleOption& styleOption() const;
+ // TODO: Hides QGraphicsItem::setSelected()/isSelected(). Replace
+ // this by using the default mechanism.
void setSelected(bool selected);
bool isSelected() const;
void setHovered(bool hovered);
bool isHovered() const;
- void setAlternatingBackgroundColors(bool enable);
- bool alternatingBackgroundColors() const;
+ void setHoverPosition(const QPointF& pos);
+
+ void setAlternateBackground(bool enable);
+ bool alternateBackground() const;
+
+ void setEnabledSelectionToggle(bool enabled);
+ bool enabledSelectionToggle() const;
/**
- * @return True if \a point is inside KItemListWidget::hoverBoundingRect(),
- * KItemListWidget::textBoundingRect(), KItemListWidget::selectionToggleRect()
+ * Sets the sibling information for the item and all of its parents.
+ * The sibling information of the upper most parent is represented by
+ * the first bit, the sibling information of the item by the last bit.
+ * The sibling information is useful for drawing the branches in
+ * tree views.
+ */
+ void setSiblingsInformation(const QBitArray& siblings);
+ QBitArray siblingsInformation() const;
+
+ /**
+ * Allows the user to edit the role \a role. The signals
+ * roleEditingCanceled() or roleEditingFinished() will be
+ * emitted after editing. An ongoing editing gets canceled if
+ * the role is empty. Derived classes must implement
+ * editedRoleChanged().
+ */
+ void setEditedRole(const QByteArray& role);
+ QByteArray editedRole() const;
+
+ /**
+ * @return True if \a point is inside KItemListWidget::hoverRect(),
+ * KItemListWidget::textRect(), KItemListWidget::selectionToggleRect()
* or KItemListWidget::expansionToggleRect().
* @reimp
*/
- virtual bool contains(const QPointF& point) const;
+ bool contains(const QPointF& point) const override;
/**
- * @return Bounding rectangle for the area that shows the icon.
+ * @return Rectangle for the area that shows the icon.
*/
- virtual QRectF iconBoundingRect() const = 0;
+ virtual QRectF iconRect() const = 0;
/**
- * @return Bounding rectangle for the area that contains the text-properties.
+ * @return Rectangle for the area that contains the text-properties.
*/
- virtual QRectF textBoundingRect() const = 0;
+ virtual QRectF textRect() const = 0;
+
+ /**
+ * @return Focus rectangle for indicating the current item. Per default
+ * textRect() will be returned. Overwrite this method if textRect()
+ * provides a larger rectangle than the actual text (e.g. to
+ * be aligned with the iconRect()). The textFocusRect() may not be
+ * outside the boundaries of textRect().
+ */
+ 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.
*/
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 = nullptr);
+
+signals:
+ void roleEditingCanceled(int index, const QByteArray& role, const QVariant& value);
+ void roleEditingFinished(int index, const QByteArray& role, const QVariant& value);
+
protected:
virtual void dataChanged(const QHash<QByteArray, QVariant>& current, const QSet<QByteArray>& roles = QSet<QByteArray>());
virtual void visibleRolesChanged(const QList<QByteArray>& current, const QList<QByteArray>& previous);
- virtual void visibleRolesSizesChanged(const QHash<QByteArray, QSizeF>& current, const QHash<QByteArray, QSizeF>& previous);
+ virtual void columnWidthChanged(const QByteArray& role, qreal current, qreal previous);
virtual void styleOptionChanged(const KItemListStyleOption& current, const KItemListStyleOption& previous);
virtual void currentChanged(bool current);
virtual void selectedChanged(bool selected);
virtual void hoveredChanged(bool hovered);
- virtual void alternatingBackgroundColorsChanged(bool enabled);
- virtual void resizeEvent(QGraphicsSceneResizeEvent* event);
+ virtual void alternateBackgroundChanged(bool enabled);
+ virtual void siblingsInformationChanged(const QBitArray& current, const QBitArray& previous);
+ virtual void editedRoleChanged(const QByteArray& current, const QByteArray& previous);
+ void resizeEvent(QGraphicsSceneResizeEvent* event) override;
/**
* @return The current opacity of the hover-animation. When implementing a custom painting-code for a hover-state
*/
qreal hoverOpacity() const;
+ const KItemListWidgetInformant* informant() const;
+
+private slots:
+ void slotHoverAnimationFinished();
+
private:
+ void initializeSelectionToggle();
void setHoverOpacity(qreal opacity);
void clearHoverCache();
- void drawFocusIndicator(QPainter* painter);
- void drawTextBackground(QPainter* painter);
+ void drawItemStyleOption(QPainter* painter, QWidget* widget, QStyle::State styleState);
private:
Q_PROPERTY(qreal hoverOpacity READ hoverOpacity WRITE setHoverOpacity)
+ KItemListWidgetInformant* m_informant;
int m_index;
bool m_selected;
bool m_current;
bool m_hovered;
- bool m_alternatingBackgroundColors;
+ bool m_alternateBackground;
+ bool m_enabledSelectionToggle;
QHash<QByteArray, QVariant> m_data;
QList<QByteArray> m_visibleRoles;
- QHash<QByteArray, QSizeF> m_visibleRolesSizes;
+ QHash<QByteArray, qreal> m_columnWidths;
KItemListStyleOption m_styleOption;
+ QBitArray m_siblingsInfo;
qreal m_hoverOpacity;
mutable QPixmap* m_hoverCache;
QPropertyAnimation* m_hoverAnimation;
+
+ KItemListSelectionToggle* m_selectionToggle;
+
+ QByteArray m_editedRole;
};
+
+inline const KItemListWidgetInformant* KItemListWidget::informant() const
+{
+ return m_informant;
+}
+
#endif
projects / dolphin.git / blobdiff