KDReportsFontScaler_p.h

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/****************************************************************************
**
** This file is part of the KD Reports library.
**
** SPDX-FileCopyrightText: 2007-2022 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
**
** SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDAB-KDReports OR LicenseRef-KDAB-KDReports-US
**
** Licensees holding valid commercial KD Reports licenses may use this file in
** accordance with the KD Reports Commercial License Agreement provided with
** the Software.
**
** Contact info@kdab.com if any conditions of this licensing are not clear to you.
**
****************************************************************************/
 
#ifndef FONTSCALER_P_H
#define FONTSCALER_P_H
 
#include "KDReportsGlobal.h"
#include <QFont>
#include <QFontMetricsF>
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the KD Reports API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
//
 
// Enable this to get debug output about the layouting
// (font scaling, table layout, spreadsheet layout)
//#define DEBUG_LAYOUT
 
namespace KDReports {
 
class KDREPORTS_EXPORT FontScaler
{
public:
    explicit FontScaler(const QFont &initialFont);
 
    void setFontAndScalingFactor(const QFont &font, qreal scalingFactor);
 
    void setFactorForHeight(qreal wantedHeight);
    void setFactorForWidth(qreal wantedFactor, const QString &sampleText);
    void applyAdditionalScalingFactor(qreal factor);
 
    QFont font() const { return m_font; }
    QFontMetricsF fontMetrics() const { return m_fontMetrics; }
    qreal scalingFactor() const { return m_scalingFactor; }
    QFontMetricsF initialFontMetrics() const { return m_initialFontMetrics; }
    qreal textWidth(const QString &text) const;
 
private:
    QFont m_font;
    QFontMetricsF m_fontMetrics;
    QFontMetricsF m_initialFontMetrics;
    qreal m_scalingFactor;
};
 
}
 
#endif /* FONTSCALER_P_H */