1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtWidgets module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QLABEL_H 41 #define QLABEL_H 42 43 #include <QtWidgets/qtwidgetsglobal.h> 44 #include <QtWidgets/qframe.h> 45 46 QT_REQUIRE_CONFIG(label); 47 48 QT_BEGIN_NAMESPACE 49 50 51 class QLabelPrivate; 52 53 class Q_WIDGETS_EXPORT QLabel : public QFrame 54 { 55 Q_OBJECT 56 Q_PROPERTY(QString text READ text WRITE setText) 57 Q_PROPERTY(Qt::TextFormat textFormat READ textFormat WRITE setTextFormat) 58 Q_PROPERTY(QPixmap pixmap READ pixmap WRITE setPixmap) 59 Q_PROPERTY(bool scaledContents READ hasScaledContents WRITE setScaledContents) 60 Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment) 61 Q_PROPERTY(bool wordWrap READ wordWrap WRITE setWordWrap) 62 Q_PROPERTY(int margin READ margin WRITE setMargin) 63 Q_PROPERTY(int indent READ indent WRITE setIndent) 64 Q_PROPERTY(bool openExternalLinks READ openExternalLinks WRITE setOpenExternalLinks) 65 Q_PROPERTY(Qt::TextInteractionFlags textInteractionFlags READ textInteractionFlags WRITE setTextInteractionFlags) 66 Q_PROPERTY(bool hasSelectedText READ hasSelectedText) 67 Q_PROPERTY(QString selectedText READ selectedText) 68 69 public: 70 explicit QLabel(QWidget *parent=nullptr, Qt::WindowFlags f=Qt::WindowFlags()); 71 explicit QLabel(const QString &text, QWidget *parent=nullptr, Qt::WindowFlags f=Qt::WindowFlags()); 72 ~QLabel(); 73 74 QString text() const; 75 76 #if QT_DEPRECATED_SINCE(5,15) 77 QT_DEPRECATED_VERSION_X(5, 15, "Use the other overload which returns QPixmap by-value") 78 const QPixmap *pixmap() const; // ### Qt 7: Remove function 79 80 QPixmap pixmap(Qt::ReturnByValueConstant) const; 81 #else 82 QPixmap pixmap(Qt::ReturnByValueConstant = Qt::ReturnByValue) const; // ### Qt 7: Remove arg 83 #endif // QT_DEPRECATED_SINCE(5,15) 84 85 #ifndef QT_NO_PICTURE 86 # if QT_DEPRECATED_SINCE(5,15) 87 QT_DEPRECATED_VERSION_X(5, 15, "Use the other overload which returns QPicture by-value") 88 const QPicture *picture() const; // ### Qt 7: Remove function 89 90 QPicture picture(Qt::ReturnByValueConstant) const; 91 # else 92 QPicture picture(Qt::ReturnByValueConstant = Qt::ReturnByValue) const; // ### Qt 7: Remove arg 93 # endif // QT_DEPRECATED_SINCE(5,15) 94 #endif 95 #if QT_CONFIG(movie) 96 QMovie *movie() const; 97 #endif 98 99 Qt::TextFormat textFormat() const; 100 void setTextFormat(Qt::TextFormat); 101 102 Qt::Alignment alignment() const; 103 void setAlignment(Qt::Alignment); 104 105 void setWordWrap(bool on); 106 bool wordWrap() const; 107 108 int indent() const; 109 void setIndent(int); 110 111 int margin() const; 112 void setMargin(int); 113 114 bool hasScaledContents() const; 115 void setScaledContents(bool); 116 QSize sizeHint() const override; 117 QSize minimumSizeHint() const override; 118 #ifndef QT_NO_SHORTCUT 119 void setBuddy(QWidget *); 120 QWidget *buddy() const; 121 #endif 122 int heightForWidth(int) const override; 123 124 bool openExternalLinks() const; 125 void setOpenExternalLinks(bool open); 126 127 void setTextInteractionFlags(Qt::TextInteractionFlags flags); 128 Qt::TextInteractionFlags textInteractionFlags() const; 129 130 void setSelection(int, int); 131 bool hasSelectedText() const; 132 QString selectedText() const; 133 int selectionStart() const; 134 135 public Q_SLOTS: 136 void setText(const QString &); 137 void setPixmap(const QPixmap &); 138 #ifndef QT_NO_PICTURE 139 void setPicture(const QPicture &); 140 #endif 141 #if QT_CONFIG(movie) 142 void setMovie(QMovie *movie); 143 #endif 144 void setNum(int); 145 void setNum(double); 146 void clear(); 147 148 Q_SIGNALS: 149 void linkActivated(const QString& link); 150 void linkHovered(const QString& link); 151 152 protected: 153 bool event(QEvent *e) override; 154 void keyPressEvent(QKeyEvent *ev) override; 155 void paintEvent(QPaintEvent *) override; 156 void changeEvent(QEvent *) override; 157 void mousePressEvent(QMouseEvent *ev) override; 158 void mouseMoveEvent(QMouseEvent *ev) override; 159 void mouseReleaseEvent(QMouseEvent *ev) override; 160 #ifndef QT_NO_CONTEXTMENU 161 void contextMenuEvent(QContextMenuEvent *ev) override; 162 #endif // QT_NO_CONTEXTMENU 163 void focusInEvent(QFocusEvent *ev) override; 164 void focusOutEvent(QFocusEvent *ev) override; 165 bool focusNextPrevChild(bool next) override; 166 167 168 private: 169 Q_DISABLE_COPY(QLabel) 170 Q_DECLARE_PRIVATE(QLabel) 171 #if QT_CONFIG(movie) 172 Q_PRIVATE_SLOT(d_func(), void _q_movieUpdated(const QRect&)) 173 Q_PRIVATE_SLOT(d_func(), void _q_movieResized(const QSize&)) 174 #endif 175 Q_PRIVATE_SLOT(d_func(), void _q_linkHovered(const QString &)) 176 177 #ifndef QT_NO_SHORTCUT 178 Q_PRIVATE_SLOT(d_func(), void _q_buddyDeleted()) 179 #endif 180 friend class QTipLabel; 181 friend class QMessageBoxPrivate; 182 friend class QBalloonTip; 183 }; 184 185 QT_END_NAMESPACE 186 187 #endif // QLABEL_H 188