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best version so far to allow copy of data using a QTextEdit in comments (needs to enable the USE_NEW_DELEGATE #ifdef)

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This commit is contained in:
csoler 2020-11-01 20:28:57 +01:00
parent a053bedca2
commit d868ee3e42
3 changed files with 82 additions and 54 deletions
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2
retroshare-gui/src/gui/Posted/PostedListWidgetWithModel.cpp
View File

@ -146,7 +146,7 @@ void PostedPostDelegate::paint(QPainter * painter, const QStyleOptionViewItem &
painter->restore();
}
QSize PostedPostDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
QSize PostedPostDelegate::sizeHint(const QStyleOptionViewItem&, const QModelIndex& index) const
{
// This is the only place where we actually set the size of cells

129
retroshare-gui/src/gui/gxs/GxsCommentTreeWidget.cpp
View File

@ -29,6 +29,7 @@
#include <QAbstractTextDocumentLayout>
#include <QApplication>
#include <QTextEdit>
#include <QHeaderView>
#include <QClipboard>
#include <QDateTime>
#include <QMenu>
@ -69,6 +70,8 @@
std::map<RsGxsMessageId, std::vector<RsGxsComment> > GxsCommentTreeWidget::mCommentsCache;
QMutex GxsCommentTreeWidget::mCacheMutex;
//#define USE_NEW_DELEGATE 1
// This class allows to draw the item using an appropriate size
class MultiLinesCommentDelegate: public QStyledItemDelegate
@ -78,6 +81,7 @@ public:
QSize sizeHint(const QStyleOptionViewItem &/*option*/, const QModelIndex &index) const
{
std::cerr << "SizeHint called with size=" << index.data(POST_CELL_SIZE_ROLE).toSize().width() << " x " <<index.data(POST_CELL_SIZE_ROLE).toSize().height() << std::endl;
return index.data(POST_CELL_SIZE_ROLE).toSize() ;
}
@ -108,7 +112,6 @@ public:
QSizeF s = td.documentLayout()->documentSize();
int m = QFontMetricsF(QFont()).height();
QSize full_area(std::min(r.width(),(int)s.width())+m,std::min(r.height(),(int)s.height())+m);
QPixmap px(full_area.width(),full_area.height());
@ -116,17 +119,19 @@ public:
QPainter p(&px) ;
p.setRenderHint(QPainter::Antialiasing);
QPainterPath path ;
path.addRoundedRect(QRectF(m/4.0,m/4.0,s.width()+m/2.0,s.height()+m/2.0),m,m) ;
QPen pen(Qt::gray,m/7.0f);
p.setPen(pen);
p.fillPath(path,QColor::fromHsv( index.data(POST_COLOR_ROLE).toInt()/255.0*360,40,220)); // varies the color according to the post author
p.drawPath(path);
{
QPainterPath path ;
path.addRoundedRect(QRectF(m/4.0,m/4.0,s.width()+m/2.0,s.height()+m/2.0),m,m) ;
QPen pen(Qt::gray,m/7.0f);
p.setPen(pen);
p.fillPath(path,QColor::fromHsv( index.data(POST_COLOR_ROLE).toInt()/255.0*360,40,220)); // varies the color according to the post author
p.drawPath(path);
QAbstractTextDocumentLayout::PaintContext ctx;
ctx.clip = QRectF(0,0,s.width(),s.height());
p.translate(QPointF(m/2.0,m/2.0));
td.documentLayout()->draw( &p, ctx );
QAbstractTextDocumentLayout::PaintContext ctx;
ctx.clip = QRectF(0,0,s.width(),s.height());
p.translate(QPointF(m/2.0,m/2.0));
td.documentLayout()->draw( &p, ctx );
}
painter->drawPixmap(r.topLeft(),px);
@ -137,19 +142,33 @@ private:
QFontMetricsF qf;
};
class NoEditDelegate: public QStyledItemDelegate
{
public:
NoEditDelegate(QObject* parent=0): QStyledItemDelegate(parent) {}
virtual QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
return nullptr;
}
};
class GxsCommentDelegate: public QStyledItemDelegate
{
public:
GxsCommentDelegate(QFontMetricsF f) : qf(f){}
QSize sizeHint(const QStyleOptionViewItem &/*option*/, const QModelIndex &index) const override
QSize sizeHint(const QStyleOptionViewItem& option, const QModelIndex &index) const override
{
QSize s = QStyledItemDelegate::sizeHint(option,index);
std::cerr << "SizeHint called with size=" << index.data(POST_CELL_SIZE_ROLE).toSize().width() << " x " <<index.data(POST_CELL_SIZE_ROLE).toSize().height() << std::endl;
return index.data(POST_CELL_SIZE_ROLE).toSize() ;
}
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &) const override
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex& index) const override
{
editor->setGeometry(option.rect);
if(index.column() == PCITEM_COLUMN_COMMENT)
editor->setGeometry(option.rect);
}
QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override
@ -158,12 +177,13 @@ public:
{
QTextEdit *b = new QTextEdit(parent);
b->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
b->setFixedSize(option.rect.size());
b->setAcceptRichText(true);
b->setTextInteractionFlags(Qt::TextSelectableByMouse|Qt::LinksAccessibleByMouse);
b->document()->setHtml("<html>"+index.data(Qt::DisplayRole).toString()+"</html>");
b->adjustSize();
std::cerr << "Creating QTextEdit of size " << option.rect.size().width() << " x " << option.rect.size().height() << std::endl;
return b;
}
else
@ -183,15 +203,6 @@ public:
opt.icon = QIcon();
opt.text = QString();
// draw default item background
if (option.state & QStyle::State_Selected) {
painter->fillRect(option.rect, option.palette.highlight());
} else {
const QWidget *widget = opt.widget;
QStyle *style = widget ? widget->style() : QApplication::style();
style->drawPrimitive(QStyle::PE_PanelItemViewItem, &opt, painter, widget);
}
const QRect r = option.rect.adjusted(0,0,-option.decorationSize.width(),0);
QTextDocument td ;
@ -199,7 +210,8 @@ public:
td.setTextWidth(r.width());
QSizeF s = td.documentLayout()->documentSize();
int m = QFontMetricsF(QFont()).height();
int m = QFontMetricsF(QFont()).height() ;
//int m = 2;
QSize full_area(std::min(r.width(),(int)s.width())+m,std::min(r.height(),(int)s.height())+m);
@ -208,19 +220,18 @@ public:
QPainter p(&px) ;
p.setRenderHint(QPainter::Antialiasing);
QPainterPath path ;
path.addRoundedRect(QRectF(m/4.0,m/4.0,s.width()+m/2.0,s.height()+m/2.0),m,m) ;
QPen pen(Qt::gray,m/7.0f);
p.setPen(pen);
p.fillPath(path,QColor::fromHsv( index.data(POST_COLOR_ROLE).toInt()/255.0*360,40,220)); // varies the color according to the post author
p.drawPath(path);
{
QTextEdit b;
b.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
b.setFixedSize(full_area);
b.setAcceptRichText(true);
b.setTextInteractionFlags(Qt::TextSelectableByMouse|Qt::LinksAccessibleByMouse);
b.document()->setHtml("<html>"+index.data(Qt::DisplayRole).toString()+"</html>");
b.adjustSize();
b.render(&p,QPoint(),QRegion(),QWidget::DrawChildren );// draw the widgets, not the background
}
QAbstractTextDocumentLayout::PaintContext ctx;
ctx.clip = QRectF(0,0,s.width(),s.height());
p.translate(QPointF(m/2.0,m/2.0));
td.documentLayout()->draw( &p, ctx );
painter->drawPixmap(r.topLeft(),px);
painter->drawPixmap(opt.rect.topLeft(),px);
const_cast<QAbstractItemModel*>(index.model())->setData(index,px.size(),POST_CELL_SIZE_ROLE);
}
@ -252,9 +263,22 @@ GxsCommentTreeWidget::GxsCommentTreeWidget(QWidget *parent)
setMouseTracking(true); // for auto selection
setSelectionBehavior(QAbstractItemView::SelectRows);
//setItemDelegateForColumn(PCITEM_COLUMN_COMMENT,new MultiLinesCommentDelegate(QFontMetricsF(font()))) ;
#ifdef USE_NEW_DELEGATE
setItemDelegateForColumn(PCITEM_COLUMN_COMMENT,new GxsCommentDelegate(QFontMetricsF(font()))) ;
// Apparently the following below is needed, since there is no way to set item flags for a single column
// so after setting flags Qt will believe that all columns are editable.
setItemDelegateForColumn(PCITEM_COLUMN_AUTHOR, new NoEditDelegate(this));
setItemDelegateForColumn(PCITEM_COLUMN_DATE, new NoEditDelegate(this));
setItemDelegateForColumn(PCITEM_COLUMN_SCORE, new NoEditDelegate(this));
setItemDelegateForColumn(PCITEM_COLUMN_UPVOTES, new NoEditDelegate(this));
setItemDelegateForColumn(PCITEM_COLUMN_DOWNVOTES,new NoEditDelegate(this));
setItemDelegateForColumn(PCITEM_COLUMN_OWNVOTE, new NoEditDelegate(this));
#else
setItemDelegateForColumn(PCITEM_COLUMN_COMMENT,new MultiLinesCommentDelegate(QFontMetricsF(font()))) ;
#endif
commentsRole = new RSTreeWidgetItemCompareRole;
commentsRole->setRole(PCITEM_COLUMN_DATE, ROLE_SORT);
@ -262,22 +286,19 @@ GxsCommentTreeWidget::GxsCommentTreeWidget(QWidget *parent)
mUseCache = false;
// QFont font = QFont("ARIAL", 10);
// font.setBold(true);
QObject::connect(header(),SIGNAL(geometriesChanged()),this,SLOT(updateContent()));
QObject::connect(header(),SIGNAL(sectionResized(int,int,int)),this,SLOT(updateContent()));
// QString name("test");
// QTreeWidgetItem *item = new QTreeWidgetItem();
// item->setText(0, name);
// item->setFont(0, font);
// item->setSizeHint(0, QSize(18, 18));
// item->setForeground(0, QBrush(QColor(79, 79, 79)));
// addTopLevelItem(item);
// item->setExpanded(true);
return;
//header()->setSectionResizeMode(PCITEM_COLUMN_COMMENT,QHeaderView::ResizeToContents);
return;
}
void GxsCommentTreeWidget::updateContent()
{
model()->dataChanged(QModelIndex(),QModelIndex());
std::cerr << "Updating content" << std::endl;
}
GxsCommentTreeWidget::~GxsCommentTreeWidget()
{
if (mTokenQueue) {
@ -777,7 +798,11 @@ void GxsCommentTreeWidget::insertComments(const std::vector<RsGxsComment>& comme
text = QString::fromUtf8(comment.mMeta.mAuthorId.toStdString().c_str());
item->setText(PCITEM_COLUMN_AUTHORID, text);
item->setFlags(Qt::ItemIsEditable | item->flags());// allows to call createEditor() in the delegate
#ifdef USE_NEW_DELEGATE
// Allows to call createEditor() in the delegate. Without this, createEditor() is never called in
// the styled item delegate.
item->setFlags(Qt::ItemIsEditable | item->flags());
#endif
addItem(comment.mMeta.mMsgId, comment.mMeta.mParentId, item);
}

5
retroshare-gui/src/gui/gxs/GxsCommentTreeWidget.h
View File

@ -47,8 +47,11 @@ public:
void setVoteId(const RsGxsId &voterId);
void setUseCache(bool b) { mUseCache = b ;}
protected:
protected slots:
void updateContent();
protected:
void mouseMoveEvent(QMouseEvent *e) override;
/* to be overloaded */