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moved elided label paint method to static so that it can be used by other item delegates

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This commit is contained in:
csoler 2020-02-18 10:50:55 +01:00
parent e4dc72169c
commit 09c5d93631
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GPG key ID: 7BCA522266C0804C
4 changed files with 163 additions and 129 deletions
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92
retroshare-gui/src/gui/common/ElidedLabel.cpp
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@ -74,19 +74,9 @@ void ElidedLabel::clear()
void ElidedLabel::paintEvent(QPaintEvent *event)
{
QLabel::paintEvent(event);
QList<QPair<QTextLine,QPoint> > lLines;
QString elidedLastLine = "";
QPainter painter(this);
QFontMetrics fontMetrics = painter.fontMetrics();
QRect cr = contentsRect();
cr.adjust(margin(), margin(), -margin(), -margin());
bool didElide = false;
QChar ellipsisChar(0x2026);//= "…"
int lineSpacing = fontMetrics.lineSpacing();
int y = 0;
QString plainText = "";
QString plainText = "";
if (mOnlyPlainText)
{
plainText = mContent;
@ -95,13 +85,38 @@ void ElidedLabel::paintEvent(QPaintEvent *event)
td.setHtml(mContent);
plainText = td.toPlainText();
}
QRect cr(contentsRect());
cr.adjust(margin(), margin(), -margin(), -margin());
bool didElide = paintElidedLine(painter,plainText,cr,alignment(),wordWrap(),true,mRectElision);
//Send signal if changed
if (didElide != mElided)
{
mElided = didElide;
emit elisionChanged(didElide);
}
}
bool ElidedLabel::paintElidedLine(QPainter& painter,QString plainText,const QRect& cr,Qt::Alignment alignment,bool wordWrap,bool drawRoundRect,QRect& rectElision)
{
QList<QPair<QTextLine,QPoint> > lLines;
QString elidedLastLine = "";
QFontMetrics fontMetrics = painter.fontMetrics();
bool didElide = false;
QChar ellipsisChar(0x2026);//= "…"
int lineSpacing = fontMetrics.lineSpacing();
int y = 0;
plainText = plainText.replace("\n",QChar(QChar::LineSeparator));
plainText = plainText.replace("\r",QChar(QChar::LineSeparator));
QTextLayout textLayout(plainText, painter.font());
QTextOption to = textLayout.textOption();
to.setAlignment(alignment());
to.setWrapMode(wordWrap() ? QTextOption::WrapAtWordBoundaryOrAnywhere : QTextOption::NoWrap);
to.setAlignment(alignment);
to.setWrapMode(wordWrap ? QTextOption::WrapAtWordBoundaryOrAnywhere : QTextOption::NoWrap);
textLayout.setTextOption(to);
textLayout.beginLayout();
@ -115,7 +130,7 @@ void ElidedLabel::paintEvent(QPaintEvent *event)
line.setLineWidth(cr.width());
int nextLineY = y + lineSpacing;
if ((cr.height() >= nextLineY + lineSpacing) && wordWrap()) {
if ((cr.height() >= nextLineY + lineSpacing) && wordWrap) {
//Line written normaly, next line will too
lLines.append(QPair<QTextLine, QPoint>(line, QPoint(0, y)));
y = nextLineY;
@ -123,8 +138,7 @@ void ElidedLabel::paintEvent(QPaintEvent *event)
//The next line can't be written.
QString lastLine = plainText.mid(line.textStart()).split(QChar(QChar::LineSeparator)).at(0);
QTextLine lineEnd = textLayout.createLine();
if (!lineEnd.isValid() && (wordWrap()
|| (fontMetrics.width(lastLine) < cr.width()))) {
if (!lineEnd.isValid() && (wordWrap || (fontMetrics.width(lastLine) < cr.width()))) {
//No more text for next line so this one is OK
lLines.append(QPair<QTextLine, QPoint>(line, QPoint(0, y)));
elidedLastLine="";
@ -150,11 +164,11 @@ void ElidedLabel::paintEvent(QPaintEvent *event)
if (didElide) iHeight += lineSpacing;
//Compute lines translation with alignment
if (alignment() & Qt::AlignTop)
if (alignment & Qt::AlignTop)
iTransY = 0;
if (alignment() & Qt::AlignBottom)
if (alignment & Qt::AlignBottom)
iTransY = cr.height() - iHeight;
if (alignment() & Qt::AlignVCenter)
if (alignment & Qt::AlignVCenter)
iTransY = (cr.height() - iHeight) / 2;
QPair<QTextLine,QPoint> pair;
@ -166,7 +180,8 @@ void ElidedLabel::paintEvent(QPaintEvent *event)
}
//Print last elided line
if (didElide) {
if (didElide)
{
int width = fontMetrics.width(elidedLastLine);
if (lastPos.y() == -1){
y = iTransY;// Only one line
@ -175,32 +190,35 @@ void ElidedLabel::paintEvent(QPaintEvent *event)
}
if (width < cr.width()){
//Text don't taking all line (with line break), so align it
if (alignment() & Qt::AlignLeft)
if (alignment & Qt::AlignLeft)
iTransX = 0;
if (alignment() & Qt::AlignRight)
if (alignment & Qt::AlignRight)
iTransX = cr.width() - width;
if (alignment() & Qt::AlignHCenter)
if (alignment & Qt::AlignHCenter)
iTransX = (cr.width() - width) / 2;
if (alignment() & Qt::AlignJustify)
if (alignment & Qt::AlignJustify)
iTransX = 0;
}
painter.drawText(QPoint(iTransX + cr.left(), y + fontMetrics.ascent() + cr.top()), elidedLastLine);
//Draw button to get ToolTip
mRectElision = QRect(iTransX + width - fontMetrics.width(ellipsisChar) + cr.left()
, y + cr.top()
, fontMetrics.width(ellipsisChar)
, fontMetrics.height() - 1);
painter.drawRoundRect(mRectElision);
} else {
mRectElision = QRect();
}
//Send signal if changed
if (didElide != mElided) {
mElided = didElide;
emit elisionChanged(didElide);
if(drawRoundRect)
{
rectElision = QRect(iTransX + width - fontMetrics.width(ellipsisChar) + cr.left()
, y + cr.top()
, fontMetrics.width(ellipsisChar)
, fontMetrics.height() - 1);
painter.drawRoundRect(rectElision);
}
else
rectElision = QRect();
}
else
rectElision = QRect();
return didElide;
}
void ElidedLabel::mousePressEvent(QMouseEvent *ev)