qgraphicsanchorlayout.h 4.4 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.
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  8. ** $QT_BEGIN_LICENSE:LGPL$
  9. ** Commercial License Usage
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  17. ** GNU Lesser General Public License Usage
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  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
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  31. ** included in the packaging of this file. Please review the following
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  34. ** https://www.gnu.org/licenses/gpl-3.0.html.
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  36. ** $QT_END_LICENSE$
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  38. ****************************************************************************/
  39. #ifndef QGRAPHICSANCHORLAYOUT_H
  40. #define QGRAPHICSANCHORLAYOUT_H
  41. #include <QtWidgets/qgraphicsitem.h>
  42. #include <QtWidgets/qgraphicslayout.h>
  43. QT_BEGIN_NAMESPACE
  44. #if !defined(QT_NO_GRAPHICSVIEW)
  45. class QGraphicsAnchorPrivate;
  46. class QGraphicsAnchorLayout;
  47. class QGraphicsAnchorLayoutPrivate;
  48. class Q_WIDGETS_EXPORT QGraphicsAnchor : public QObject
  49. {
  50. Q_OBJECT
  51. Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing RESET unsetSpacing)
  52. Q_PROPERTY(QSizePolicy::Policy sizePolicy READ sizePolicy WRITE setSizePolicy)
  53. public:
  54. void setSpacing(qreal spacing);
  55. void unsetSpacing();
  56. qreal spacing() const;
  57. void setSizePolicy(QSizePolicy::Policy policy);
  58. QSizePolicy::Policy sizePolicy() const;
  59. ~QGraphicsAnchor();
  60. private:
  61. QGraphicsAnchor(QGraphicsAnchorLayout *parent);
  62. Q_DECLARE_PRIVATE(QGraphicsAnchor)
  63. friend class QGraphicsAnchorLayoutPrivate;
  64. friend struct AnchorData;
  65. };
  66. class Q_WIDGETS_EXPORT QGraphicsAnchorLayout : public QGraphicsLayout
  67. {
  68. public:
  69. QGraphicsAnchorLayout(QGraphicsLayoutItem *parent = Q_NULLPTR);
  70. virtual ~QGraphicsAnchorLayout();
  71. QGraphicsAnchor *addAnchor(QGraphicsLayoutItem *firstItem, Qt::AnchorPoint firstEdge,
  72. QGraphicsLayoutItem *secondItem, Qt::AnchorPoint secondEdge);
  73. QGraphicsAnchor *anchor(QGraphicsLayoutItem *firstItem, Qt::AnchorPoint firstEdge,
  74. QGraphicsLayoutItem *secondItem, Qt::AnchorPoint secondEdge);
  75. void addCornerAnchors(QGraphicsLayoutItem *firstItem, Qt::Corner firstCorner,
  76. QGraphicsLayoutItem *secondItem, Qt::Corner secondCorner);
  77. void addAnchors(QGraphicsLayoutItem *firstItem,
  78. QGraphicsLayoutItem *secondItem,
  79. Qt::Orientations orientations = Qt::Horizontal | Qt::Vertical);
  80. void setHorizontalSpacing(qreal spacing);
  81. void setVerticalSpacing(qreal spacing);
  82. void setSpacing(qreal spacing);
  83. qreal horizontalSpacing() const;
  84. qreal verticalSpacing() const;
  85. void removeAt(int index) Q_DECL_OVERRIDE;
  86. void setGeometry(const QRectF &rect) Q_DECL_OVERRIDE;
  87. int count() const Q_DECL_OVERRIDE;
  88. QGraphicsLayoutItem *itemAt(int index) const Q_DECL_OVERRIDE;
  89. void invalidate() Q_DECL_OVERRIDE;
  90. protected:
  91. QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const Q_DECL_OVERRIDE;
  92. private:
  93. Q_DISABLE_COPY(QGraphicsAnchorLayout)
  94. Q_DECLARE_PRIVATE(QGraphicsAnchorLayout)
  95. friend class QGraphicsAnchor;
  96. };
  97. #endif
  98. QT_END_NAMESPACE
  99. #endif