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338 | /* ============================================================
*
* This file is a part of digiKam project
* https://www.digikam.org
*
* Date : 2010-07-15
* Description : Item delegate for image versions list view
*
* SPDX-FileCopyrightText: 2010-2011 by Martin Klapetek <martin dot klapetek at gmail dot com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* ============================================================ */
#include "versionsdelegate.h"
// Qt includes
#include <QApplication>
#include <QPainter>
#include <QPropertyAnimation>
#include <QStyle>
#include <QStyleOptionViewItem>
// KDE includes
#include <klocalizedstring.h>
// Local includes
#include "digikam_debug.h"
#include "itemdelegate.h"
#include "itemhistorygraphmodel.h"
#include "itemversionsmodel.h"
#include "thumbnailloadthread.h"
#include "dcategorydrawer.h"
#include "dlayoutbox.h"
#include "dworkingpixmap.h"
namespace Digikam
{
class Q_DECL_HIDDEN VersionsDelegate::Private
{
public:
Private() = default;
const int categoryExtraSpacing = 6;
const int filterItemExtraSpacing = 4;
int animationState = 0;
QPropertyAnimation* animation = nullptr;
DWorkingPixmap* workingPixmap = nullptr;
DCategoryDrawer* categoryDrawer = nullptr;
int thumbnailSize = 64;
int thumbsWaitingFor = 0;
bool inSizeHint = false;
public:
inline const QWidget* widget(const QStyleOptionViewItem& option)
{
if (const QStyleOptionViewItem* v3 = qstyleoption_cast<const QStyleOptionViewItem*>(&option))
{
return v3->widget;
}
return nullptr;
}
inline const QStyle* style(const QStyleOptionViewItem& option)
{
const QWidget* w = widget(option);
return (w ? w->style() : QApplication::style());
}
};
VersionsDelegate::VersionsDelegate(QObject* const parent)
: QStyledItemDelegate(parent),
d (new Private)
{
d->workingPixmap = new DWorkingPixmap(this);
d->categoryDrawer = new DCategoryDrawer(nullptr);
d->animation = new QPropertyAnimation(this, "animationState", this);
d->animation->setStartValue(0);
d->animation->setEndValue(d->workingPixmap->frameCount() - 1);
d->animation->setDuration(100 * d->workingPixmap->frameCount());
d->animation->setLoopCount(-1);
}
VersionsDelegate::~VersionsDelegate()
{
delete d->categoryDrawer;
delete d;
}
int VersionsDelegate::animationState() const
{
return d->animationState;
}
void VersionsDelegate::setAnimationState(int animationState)<--- Shadow argument
{
if (d->animationState == animationState)
{
return;
}
d->animationState = animationState;
Q_EMIT animationStateChanged();
}
void VersionsDelegate::setThumbnailSize(int size) const
{
d->thumbnailSize = size;
}
int VersionsDelegate::thumbnailSize() const
{
return d->thumbnailSize;
}
void VersionsDelegate::beginPainting()
{
d->thumbsWaitingFor = 0;
}
void VersionsDelegate::finishPainting()
{
/*
qCDebug(DIGIKAM_GENERAL_LOG) << "painting finished" << d->thumbsWaitingFor;
*/
if (d->thumbsWaitingFor)
{
d->animation->start();
}
else
{
d->animation->stop();
}
}
QSize VersionsDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
{
if (index.data(ItemHistoryGraphModel::IsImageItemRole).toBool())
{
d->inSizeHint = true;
QSize size = QStyledItemDelegate::sizeHint(option, index);
d->inSizeHint = false;
return size;
}
else if (index.data(ItemHistoryGraphModel::IsFilterActionItemRole).toBool())
{
QSize size = QStyledItemDelegate::sizeHint(option, index);
size += QSize(0, d->filterItemExtraSpacing);
return size;
}
else if (index.data(ItemHistoryGraphModel::IsCategoryItemRole).toBool())
{
int height = d->categoryDrawer->categoryHeight(index, option) + d->categoryExtraSpacing;
QSize size = QStyledItemDelegate::sizeHint(option, index);
return size.expandedTo(QSize(0, height));
}
else if (index.data(ItemHistoryGraphModel::IsSeparatorItemRole).toBool())
{
//int pm = d->style(option)->pixelMetric(QStyle::PM_DefaultFrameWidth, 0, d->widget(option));
int pm = d->style(option)->pixelMetric(QStyle::PM_ToolBarSeparatorExtent, nullptr, d->widget(option));
//int spacing = d->style(option)->pixelMetric(QStyle::PM_LayoutVerticalSpacing, &option);
return QSize(1, pm);
}
else
{
return QStyledItemDelegate::sizeHint(option, index);
}
}
void VersionsDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
if (index.data(ItemHistoryGraphModel::IsCategoryItemRole).toBool())
{
QStyleOption opt = option;
opt.rect.adjust(d->categoryExtraSpacing / 2, d->categoryExtraSpacing / 2, - d->categoryExtraSpacing / 2, 0);
// purpose of sortRole is unclear, give Qt::DisplayRole
d->categoryDrawer->drawCategory(index, Qt::DisplayRole, opt, painter);
}
else if (index.data(ItemHistoryGraphModel::IsSeparatorItemRole).toBool())
{
d->style(option)->drawPrimitive(QStyle::PE_IndicatorToolBarSeparator, &option, painter, d->widget(option));
}
else
{
QStyledItemDelegate::paint(painter, option, index);
return;
/*
if (index.data(ItemHistoryGraphModel::IsSubjectImageRole).toBool())
{
// draw 1px border
QPen oldPen = painter->pen();
QPen pen(option.palette.windowText(), 0);
painter->setPen(pen);
painter->drawRect(option.rect);
painter->setPen(oldPen);
}
*/
}
}
void VersionsDelegate::initStyleOption(QStyleOptionViewItem* option, const QModelIndex& index) const
{
QStyledItemDelegate::initStyleOption(option, index);
// Don't show the separator-like focus indicator
option->state &= ~QStyle::State_HasFocus;
if (!index.data(ItemHistoryGraphModel::IsImageItemRole).toBool())
{
return;
}
/*
if (index.data(ItemHistoryGraphModel::IsSubjectImageRole).toBool())
{
option->font.setWeight(QFont::Bold);
}
*/
option->font.setWeight(QFont::Bold);
if (QStyleOptionViewItem* const v4 = qstyleoption_cast<QStyleOptionViewItem*>(option))
{
v4->features |= QStyleOptionViewItem::HasDecoration;
if (d->inSizeHint)
{
v4->decorationSize = QSize(d->thumbnailSize, d->thumbnailSize);
}
else
{
QPixmap pix = ItemDelegate::retrieveThumbnailPixmap(index, d->thumbnailSize);
if (pix.isNull())
{
pix = d->workingPixmap->frameAt(d->animationState);
d->thumbsWaitingFor++;
}
v4->icon = QIcon(pix);
v4->decorationSize = pix.size();
}
}
}
/*
void VersionsDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
painter->save();
painter->setRenderHint(QPainter::Antialiasing, true);
QApplication::style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter);
//qCDebug(DIGIKAM_GENERAL_LOG) << QApplication::style()->subElementRect(QStyle::SE_ItemViewItemDecoration, &option, 0);
if (dynamic_cast<const ItemVersionsModel*>(index.model())->paintTree())
{
const_cast<QStyleOptionViewItem&>(option).rect.setLeft(option.rect.left() + (index.data(Qt::UserRole).toInt() * 16));
}
QRect thumbRect(option.rect.left()+4, option.rect.top()+8, 64, 48);
painter->setPen(Qt::black);
painter->drawRect(thumbRect);
QPixmap thumbnail;
if (ThumbnailLoadThread::defaultIconViewThread()->find(index.data(Qt::DisplayRole).toString(), thumbnail))
{
if (!thumbnail.isNull())
{
thumbnail = thumbnail.scaled(64, 48, Qt::KeepAspectRatio);
const_cast<VersionsDelegate*>(this)->d->thumbsPainted++;
}
else
{
//if the thumbnail pixmap is null, display an error icon instead
thumbnail = BarIcon("task-reject");
}
if (d->thumbsPainted == index.model()->rowCount())
{
// the timer can be stopped after last thumbnail is drawn,
// but it needs to be delayed a little, so that all thumbs
// have enough time to get painted correctly
delayedAnimationTimerStop();
}
}
else
{
//when the thumbnail is not loaded yet, start the animation
d->workingWidget->toggleTimer(true);
connect(d->workingWidget, SIGNAL(animationStep()),
dynamic_cast<const ItemVersionsModel*>(index.model()), SLOT(slotAnimationStep()));
thumbnail = QPixmap::grabWidget(d->workingWidget);
}
painter->drawPixmap(thumbRect.left()+(32-(int)(thumbnail.width()/2)), thumbRect.top()+(24-(int)(thumbnail.height()/2)), thumbnail);
QRect textRect = option.rect;
textRect.setLeft(textRect.left() + 72);
QUrl path(index.data(Qt::DisplayRole).toString());
if (index.row() == 0 && index.model()->rowCount() > 1)
{
painter->drawText(textRect, Qt::AlignVCenter, i18n("%1 (Original)", path.fileName()));
}
else if (index.row() == 0 && index.model()->rowCount() == 1)
{
painter->drawText(textRect, Qt::AlignVCenter, i18n("This is the original image"));
}
else
{
painter->drawText(textRect, Qt::AlignVCenter, path.fileName());
}
painter->restore();
}
*/
} // namespace Digikam
#include "moc_versionsdelegate.cpp"
|