qgraphicslayout.h 3.2 KB

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  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
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  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. #ifndef QGRAPHICSLAYOUT_H
  40. #define QGRAPHICSLAYOUT_H
  41. #include <QtWidgets/qgraphicslayoutitem.h>
  42. QT_BEGIN_NAMESPACE
  43. #if !defined(QT_NO_GRAPHICSVIEW)
  44. class QGraphicsLayoutPrivate;
  45. class QGraphicsLayoutItem;
  46. class QGraphicsWidget;
  47. class Q_WIDGETS_EXPORT QGraphicsLayout : public QGraphicsLayoutItem
  48. {
  49. public:
  50. QGraphicsLayout(QGraphicsLayoutItem *parent = Q_NULLPTR);
  51. ~QGraphicsLayout();
  52. void setContentsMargins(qreal left, qreal top, qreal right, qreal bottom);
  53. void getContentsMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const Q_DECL_OVERRIDE;
  54. void activate();
  55. bool isActivated() const;
  56. virtual void invalidate();
  57. virtual void updateGeometry() Q_DECL_OVERRIDE;
  58. virtual void widgetEvent(QEvent *e);
  59. virtual int count() const = 0;
  60. virtual QGraphicsLayoutItem *itemAt(int i) const = 0;
  61. virtual void removeAt(int index) = 0;
  62. static void setInstantInvalidatePropagation(bool enable);
  63. static bool instantInvalidatePropagation();
  64. protected:
  65. QGraphicsLayout(QGraphicsLayoutPrivate &, QGraphicsLayoutItem *);
  66. void addChildLayoutItem(QGraphicsLayoutItem *layoutItem);
  67. private:
  68. Q_DISABLE_COPY(QGraphicsLayout)
  69. Q_DECLARE_PRIVATE(QGraphicsLayout)
  70. friend class QGraphicsWidget;
  71. };
  72. Q_DECLARE_INTERFACE(QGraphicsLayout, "org.qt-project.Qt.QGraphicsLayout")
  73. #endif
  74. QT_END_NAMESPACE
  75. #endif