QImage KoStyleThumbnailer::thumbnail(KoCharacterStyle *characterStyle, KoParagraphStyle *paragraphStyle, QSize size, bool recreateThumbnail, KoStyleThumbnailerFlags flags)
{
if ((flags & UseStyleNameText) && (!characterStyle || characterStyle->name().isNull())) {
return QImage();
} else if ((! (flags & UseStyleNameText)) && d->thumbnailText.isEmpty()) {
return QImage();
}
else if (characterStyle == 0) {
return QImage();
}
if (!size.isValid() || size.isNull()) {
size = d->defaultSize;
}
QString imageKey = "c_" + QString::number(reinterpret_cast<unsigned long>(characterStyle)) + "_"
+ "p_" + QString::number(reinterpret_cast<unsigned long>(paragraphStyle)) + "_"
+ QString::number(size.width()) + "_" + QString::number(size.height());
if (!recreateThumbnail && d->thumbnailCache.object(imageKey)) {
return QImage(*(d->thumbnailCache.object(imageKey)));
}
QImage *im = new QImage(size.width(), size.height(), QImage::Format_ARGB32_Premultiplied);
im->fill(QColor(Qt::transparent).rgba());
QTextCursor cursor(d->thumbnailHelperDocument);
QTextCharFormat format;
// Default to black as text color, to match what KoTextLayoutArea::paint(...)
// does, setting solid black if no brush is set. Otherwise the UI text color
// would be used, which might be too bright with dark UI color schemes
format.setForeground(QColor(Qt::black));
KoCharacterStyle *characterStyleClone = characterStyle->clone();
characterStyleClone->applyStyle(format);
cursor.select(QTextCursor::Document);
cursor.setBlockFormat(QTextBlockFormat());
cursor.setBlockCharFormat(QTextCharFormat());
cursor.setCharFormat(QTextCharFormat());
if (paragraphStyle) {
KoParagraphStyle *paragraphStyleClone = paragraphStyle->clone();
// paragraphStyleClone->KoCharacterStyle::applyStyle(format);
QTextBlock block = cursor.block();
paragraphStyleClone->applyStyle(block, true);
delete paragraphStyleClone;
paragraphStyleClone = 0;
}
if (flags & UseStyleNameText) {
cursor.insertText(characterStyleClone->name(), format);
} else {
cursor.insertText(d->thumbnailText, format);
}
layoutThumbnail(size, im, flags);
d->thumbnailCache.insert(imageKey, im);
delete characterStyleClone;
return QImage(*im);
}
thumbnailCell::thumbnailCell(QWidget* parent) : QWidget(parent)
{
m_pageNb = 0;
m_pageThumbnail = 0;
m_pageNbText.clear();
m_pageNbText.setText("no page set");
m_pageNbText.setParent(this);
layoutThumbnail();
}
QImage KoStyleThumbnailer::thumbnail(KoParagraphStyle *style, QSize size, bool recreateThumbnail, KoStyleThumbnailerFlags flags)
{
if ((flags & UseStyleNameText) && (!style || style->name().isNull())) {
return QImage();
} else if ((! (flags & UseStyleNameText)) && d->thumbnailText.isEmpty()) {
return QImage();
}
if (!size.isValid() || size.isNull()) {
size = d->defaultSize;
}
QString imageKey = "p_" + QString::number(reinterpret_cast<unsigned long>(style)) + "_" + QString::number(size.width()) + "_" + QString::number(size.height());
if (!recreateThumbnail && d->thumbnailCache.object(imageKey)) {
return QImage(*(d->thumbnailCache.object(imageKey)));
}
QImage *im = new QImage(size.width(), size.height(), QImage::Format_ARGB32_Premultiplied);
im->fill(QColor(Qt::transparent).rgba());
KoParagraphStyle *clone = style->clone();
//TODO: make the following real options
//we ignore these properties when the thumbnail would not be sufficient to preview properly the whole paragraph with margins.
clone->setMargin(QTextLength(QTextLength::FixedLength, 0));
clone->setPadding(0);
//
QTextCursor cursor(d->thumbnailHelperDocument);
cursor.select(QTextCursor::Document);
cursor.setBlockFormat(QTextBlockFormat());
cursor.setBlockCharFormat(QTextCharFormat());
cursor.setCharFormat(QTextCharFormat());
QTextBlock block = cursor.block();
clone->applyStyle(block, true);
QTextCharFormat format;
// Default to black as text color, to match what KoTextLayoutArea::paint(...)
// does, setting solid black if no brush is set. Otherwise the UI text color
// would be used, which might be too bright with dark UI color schemes
format.setForeground(QColor(Qt::black));
clone->KoCharacterStyle::applyStyle(format);
if (flags & UseStyleNameText) {
cursor.insertText(clone->name(), format);
} else {
cursor.insertText(d->thumbnailText, format);
}
layoutThumbnail(size, im, flags);
d->thumbnailCache.insert(imageKey, im);
delete clone;
return QImage(*im);
}
thumbnailCell::thumbnailCell(int pageNb, QLabel* pageThumbnail, QWidget* parent) : QWidget(parent)
{
setThumbnail(pageNb, pageThumbnail);
layoutThumbnail();
}
