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/***************************************************************************
* Copyright (C) 2011 by Peter Penz <[email protected]> *
* *
* 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 KFILEITEMLISTWIDGET_H
#define KFILEITEMLISTWIDGET_H
#include <libdolphin_export.h>
#include <kitemviews/kitemlistwidget.h>
#include <QPixmap>
#include <QPointF>
#include <QStaticText>
class KItemListView;
class KItemListStyleOption;
class LIBDOLPHINPRIVATE_EXPORT KFileItemListWidget : public KItemListWidget
{
Q_OBJECT
public:
enum Layout
{
IconsLayout,
CompactLayout,
DetailsLayout
};
KFileItemListWidget(QGraphicsItem* parent);
virtual ~KFileItemListWidget();
void setLayout(Layout layout);
Layout layout() const;
void setSupportsItemExpanding(bool supportsItemExpanding);
bool supportsItemExpanding() const;
virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
virtual QRectF iconRect() const;
virtual QRectF textRect() const;
virtual QRectF textFocusRect() const;
virtual QRectF expansionToggleRect() const;
virtual QRectF selectionToggleRect() const;
/**
* Implementation of KItemListWidgetCreatorBase::itemSizeHint() when
* using the KItemListWidgetCreator-template.
*
* @see KItemListView
*/
static QSizeF itemSizeHint(int index, const KItemListView* view);
/**
* Implementation of KItemListWidgetCreatorBase::preferredRoleColumnWidth() when
* using the KItemListWidgetCreator-template.
*
* @see KItemListView
*/
static qreal preferredRoleColumnWidth(const QByteArray& role, int index, const KItemListView* view);
protected:
/**
* Invalidates the cache which results in calling KFileItemListWidget::refreshCache() as
* soon as the item need to gets repainted.
*/
void invalidateCache();
/**
* Is called if the cache got invalidated by KFileItemListWidget::invalidateCache().
* The default implementation is empty.
*/
virtual void refreshCache();
void setTextColor(const QColor& color);
QColor textColor() const;
void setOverlay(const QPixmap& overlay);
QPixmap overlay() const;
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 columnWidthChanged(const QByteArray& role, qreal current, qreal previous);
virtual void styleOptionChanged(const KItemListStyleOption& current, const KItemListStyleOption& previous);
virtual void hoveredChanged(bool hovered);
virtual void selectedChanged(bool selected);
virtual void siblingsInformationChanged(const QBitArray& current, const QBitArray& previous);
virtual void resizeEvent(QGraphicsSceneResizeEvent* event);
virtual void showEvent(QShowEvent* event);
virtual void hideEvent(QHideEvent* event);
private slots:
void slotCutItemsChanged();
private:
/**
* Typedefinitions for roles that require a special handling
* and must be accessible in a fast way. The mapping of a
* QByteArray role to the type is done by KFileItemListWidget::roleType().
*/
enum RoleType {
Name,
Size,
Date,
Rating,
Generic // Mandatory last entry
};
void triggerCacheRefreshing();
void updateExpansionArea();
void updatePixmapCache();
void updateTextsCache();
void updateIconsLayoutTextCache();
void updateCompactLayoutTextCache();
void updateDetailsLayoutTextCache();
void updateAdditionalInfoTextColor();
void drawPixmap(QPainter* painter, const QPixmap& pixmap);
void drawSiblingsInformation(QPainter* painter);
static QPixmap pixmapForIcon(const QString& name, int size);
static void applyCutEffect(QPixmap& pixmap);
static void applyHiddenEffect(QPixmap& pixmap);
static RoleType roleType(const QByteArray& role);
/**
* @return Preferred size of the rating-image based on the given
* style-option. The height of the font is taken as
* reference.
*/
static QSizeF preferredRatingSize(const KItemListStyleOption& option);
/**
* @return Horizontal padding in pixels that is added to the required width of
* a column to display the content.
*/
static qreal columnPadding(const KItemListStyleOption& option);
/**
* @return Shown string for the role \p role of the item with the values \p values.
*/
static QString roleText(const QByteArray& role, const QHash<QByteArray, QVariant>& values);
private:
bool m_isCut;
bool m_isHidden;
bool m_isExpandable;
bool m_supportsItemExpanding;
bool m_dirtyLayout;
bool m_dirtyContent;
QSet<QByteArray> m_dirtyContentRoles;
Layout m_layout;
QPointF m_pixmapPos;
QPixmap m_pixmap;
QSize m_scaledPixmapSize;
QRectF m_iconRect; // Cache for KItemListWidget::iconRect()
QPixmap m_hoverPixmap; // Cache for modified m_pixmap when hovering the item
struct TextInfo
{
QPointF pos;
QStaticText staticText;
};
QHash<QByteArray, TextInfo*> m_textInfo;
QRectF m_textRect;
QList<QByteArray> m_sortedVisibleRoles;
QRectF m_expansionArea;
QColor m_customTextColor;
QColor m_additionalInfoTextColor;
QPixmap m_overlay;
QPixmap m_rating;
};
#endif
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