mirror of
https://github.com/tumic0/QtPBFImagePlugin.git
synced 2025-02-23 19:40:48 +01:00
89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
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#include <QPainter>
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#include <QtMath>
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#include "textpointitem.h"
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#define FLAGS (Qt::AlignCenter | Qt::TextWordWrap | Qt::TextDontClip)
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static QRectF fuzzyBoundingRect(const QString &str, const QFont &font,
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int maxTextWidth)
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{
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int limit = font.pixelSize() * maxTextWidth;
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qreal cw = font.pixelSize() * 0.6;
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qreal lh = font.pixelSize() * 1.25;
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int width = 0, lines = 0;
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QStringList l(str.split('\n'));
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for (int i = 0; i < l.size(); i++) {
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int lw = (int)(l.at(i).length() * cw);
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if (lw > limit) {
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l[i].replace('-', ' ');
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l[i].replace('/', ' ');
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QStringList words(l.at(i).split(' '));
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int pl = 0;
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for (int j = 0; j < words.size(); j++) {
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int wl = (int)(words.at(j).length() * cw);
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if (wl + pl < limit) {
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pl += wl + cw;
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} else {
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if (wl > limit) {
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if (pl > 0)
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lines++;
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} else
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lines++;
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width = qMax(width, qMax(pl, wl));
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pl = wl;
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}
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}
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width = qMax(width, pl);
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lines++;
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} else {
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width = qMax(width, lw);
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lines++;
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}
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}
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return QRectF(0, 0, width, lines * lh);
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}
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/*
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static QRectF exactBoundingRect(const QString &str, const QFont &font,
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int maxTextWidth)
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{
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QFontMetrics fm(font);
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int limit = font.pixelSize() * maxTextWidth;
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// Italic fonts overflow the computed bounding rect, so reduce it
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// a little bit.
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if (font.italic())
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limit -= font.pixelSize() / 2.0;
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QRect br = fm.boundingRect(QRect(0, 0, limit, 0), FLAGS, str);
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Q_ASSERT(br.isValid());
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// Expand the bounding rect back to the real content size
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if (font.italic())
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br.adjust(-font.pixelSize() / 4.0, 0, font.pixelSize() / 4.0, 0);
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return br;
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}
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*/
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TextPointItem::TextPointItem(const QString &text, const QPointF &pos,
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const QFont &font, int maxTextWidth) :_text(text), _font(font)
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{
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_boundingRect = fuzzyBoundingRect(text, font, maxTextWidth);
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//_boundingRect = exactBoundingRect(text, font, maxTextWidth);
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_boundingRect.moveCenter(pos);
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_shape.addRect(_boundingRect);
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}
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void TextPointItem::paint(QPainter *painter) const
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{
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painter->setFont(_font);
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painter->setPen(_pen);
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painter->drawText(_boundingRect, FLAGS, _text);
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//painter->setPen(Qt::red);
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//painter->drawRect(_boundingRect);
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}
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