2014-11-13 01:04:59 +02:00
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/*********************************************************************************
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* *
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* Copyright (C) 2005, 2009 by Albert Astals Cid <aacid@kde.org> *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public *
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* License as published by the Free Software Foundation; either *
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* version 2.1 of the License, or (at your option) version 3, or any *
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* later version accepted by the membership of KDE e.V. (or its *
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* successor approved by the membership of KDE e.V.), which shall *
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* act as a proxy defined in Section 6 of version 3 of the license. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library. If not, see <http://www.gnu.org/licenses/>. *
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* *
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*********************************************************************************/
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#include "kfontutils.h"
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#include <qpainter.h>
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2015-08-24 23:45:12 +03:00
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#include <qfont.h>
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2014-11-13 01:04:59 +02:00
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qreal KFontUtils::adaptFontSize(QPainter &painter, const QString &string, qreal width, qreal height, qreal maxFontSize, qreal minFontSize, AdaptFontSizeOptions flags)
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{
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qreal size = maxFontSize;
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QRectF boundingRect;
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bool done = false;
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while (!done && size > minFontSize) {
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QFont f = painter.font();
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f.setPointSizeF(size);
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painter.setFont(f);
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int qtFlags = Qt::AlignCenter | Qt::TextWordWrap;
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if (flags & DoNotAllowWordWrap) {
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qtFlags = qtFlags & ~Qt::TextWordWrap;
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}
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boundingRect = painter.boundingRect(QRectF(0, 0, width, height), qtFlags, string);
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if (boundingRect.width() == 0 || boundingRect.height() == 0) {
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return -1;
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} else if (boundingRect.width() > width || boundingRect.height() > height) {
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size = qMin(width * size / boundingRect.width(), height * size / boundingRect.height());
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} else {
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done = true;
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}
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}
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return size;
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}
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qreal KFontUtils::adaptFontSize(QPainter &painter, const QString &text, const QSizeF &availableSize, qreal maxFontSize, qreal minFontSize, AdaptFontSizeOptions flags)
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{
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return adaptFontSize(painter, text, availableSize.width(), availableSize.height(), maxFontSize, minFontSize, flags);
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}
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