1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the examples of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:BSD$ 9 ** You may use this file under the terms of the BSD license as follows: 10 ** 11 ** "Redistribution and use in source and binary forms, with or without 12 ** modification, are permitted provided that the following conditions are 13 ** met: 14 ** * Redistributions of source code must retain the above copyright 15 ** notice, this list of conditions and the following disclaimer. 16 ** * Redistributions in binary form must reproduce the above copyright 17 ** notice, this list of conditions and the following disclaimer in 18 ** the documentation and/or other materials provided with the 19 ** distribution. 20 ** * Neither the name of The Qt Company Ltd nor the names of its 21 ** contributors may be used to endorse or promote products derived 22 ** from this software without specific prior written permission. 23 ** 24 ** 25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 36 ** 37 ** $QT_END_LICENSE$ 38 ** 39 ****************************************************************************/ 40 41 #ifndef GRIDLAYOUT_H 42 #define GRIDLAYOUT_H 43 44 #include <qdeclarative.h> 45 46 #include <QGraphicsGridLayout> 47 #include <QGraphicsLayoutItem> 48 49 class GridLayoutAttached; 50 class GraphicsGridLayoutObject : public QObject, public QGraphicsGridLayout 51 { 52 Q_OBJECT 53 Q_INTERFACES(QGraphicsLayout QGraphicsLayoutItem) 54 55 Q_PROPERTY(QDeclarativeListProperty<QGraphicsLayoutItem> children READ children) 56 Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing) 57 Q_PROPERTY(qreal contentsMargin READ contentsMargin WRITE setContentsMargin) 58 Q_PROPERTY(qreal verticalSpacing READ verticalSpacing WRITE setVerticalSpacing) 59 Q_PROPERTY(qreal horizontalSpacing READ horizontalSpacing WRITE setHorizontalSpacing) 60 Q_CLASSINFO("DefaultProperty", "children") 61 62 public: 63 GraphicsGridLayoutObject(QObject * = 0); 64 ~GraphicsGridLayoutObject(); 65 children()66 QDeclarativeListProperty<QGraphicsLayoutItem> children() { return QDeclarativeListProperty<QGraphicsLayoutItem>(this, 0, children_append, children_count, children_at, children_clear); } 67 68 qreal spacing() const; 69 qreal contentsMargin() const; 70 void setContentsMargin(qreal); 71 72 void removeAt(int index); 73 74 static GridLayoutAttached *qmlAttachedProperties(QObject *); 75 76 private slots: 77 void updateAlignment(QGraphicsLayoutItem*,Qt::Alignment); 78 79 private: 80 friend class GraphicsLayoutAttached; 81 82 void addWidget(QGraphicsWidget *); 83 void clearChildren(); 84 void addLayoutItem(QGraphicsLayoutItem *); 85 children_append(QDeclarativeListProperty<QGraphicsLayoutItem> * prop,QGraphicsLayoutItem * item)86 static void children_append(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, QGraphicsLayoutItem *item) { 87 static_cast<GraphicsGridLayoutObject*>(prop->object)->addLayoutItem(item); 88 } 89 children_clear(QDeclarativeListProperty<QGraphicsLayoutItem> * prop)90 static void children_clear(QDeclarativeListProperty<QGraphicsLayoutItem> *prop) { 91 static_cast<GraphicsGridLayoutObject*>(prop->object)->clearChildren(); 92 } 93 children_count(QDeclarativeListProperty<QGraphicsLayoutItem> * prop)94 static int children_count(QDeclarativeListProperty<QGraphicsLayoutItem> *prop) { 95 return static_cast<GraphicsGridLayoutObject*>(prop->object)->count(); 96 } 97 children_at(QDeclarativeListProperty<QGraphicsLayoutItem> * prop,int index)98 static QGraphicsLayoutItem *children_at(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, int index) { 99 return static_cast<GraphicsGridLayoutObject*>(prop->object)->itemAt(index); 100 } 101 102 static QHash<QGraphicsLayoutItem*, GridLayoutAttached*> attachedProperties; 103 }; 104 105 106 class GridLayoutAttached : public QObject 107 { 108 Q_OBJECT 109 110 Q_PROPERTY(int row READ row WRITE setRow) 111 Q_PROPERTY(int column READ column WRITE setColumn) 112 113 Q_PROPERTY(int rowSpan READ rowSpan WRITE setRowSpan) 114 Q_PROPERTY(int columnSpan READ columnSpan WRITE setColumnSpan) 115 Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment) 116 117 Q_PROPERTY(int rowStretchFactor READ rowStretchFactor WRITE setRowStretchFactor) 118 Q_PROPERTY(int columnStretchFactor READ columnStretchFactor WRITE setColumnStretchFactor) 119 Q_PROPERTY(int rowSpacing READ rowSpacing WRITE setRowSpacing) 120 Q_PROPERTY(int columnSpacing READ columnSpacing WRITE setColumnSpacing) 121 122 Q_PROPERTY(int rowPreferredHeight READ rowPreferredHeight WRITE setRowPreferredHeight) 123 Q_PROPERTY(int rowMinimumHeight READ rowMinimumHeight WRITE setRowMinimumHeight) 124 Q_PROPERTY(int rowMaximumHeight READ rowMaximumHeight WRITE setRowMaximumHeight) 125 Q_PROPERTY(int rowFixedHeight READ rowFixedHeight WRITE setRowFixedHeight) 126 127 Q_PROPERTY(int columnPreferredWidth READ columnPreferredWidth WRITE setColumnPreferredWidth) 128 Q_PROPERTY(int columnMaximumWidth READ columnMaximumWidth WRITE setColumnMaximumWidth) 129 Q_PROPERTY(int columnMinimumWidth READ columnMinimumWidth WRITE setColumnMinimumWidth) 130 Q_PROPERTY(int columnFixedWidth READ columnFixedWidth WRITE setColumnFixedWidth) 131 132 public: 133 GridLayoutAttached(QObject *parent); 134 row()135 int row() const { return m_row; } setRow(int r)136 void setRow(int r) { m_row = r; } 137 column()138 int column() const { return m_column; } setColumn(int c)139 void setColumn(int c) { m_column = c; } 140 rowSpan()141 int rowSpan() const { return m_rowspan; } setRowSpan(int rs)142 void setRowSpan(int rs) { m_rowspan = rs; } 143 columnSpan()144 int columnSpan() const { return m_colspan; } setColumnSpan(int cs)145 void setColumnSpan(int cs) { m_colspan = cs; } 146 alignment()147 Qt::Alignment alignment() const { return m_alignment; } 148 void setAlignment(Qt::Alignment a); 149 rowStretchFactor()150 int rowStretchFactor() const { return m_rowStretch; } setRowStretchFactor(int f)151 void setRowStretchFactor(int f) { m_rowStretch = f; } columnStretchFactor()152 int columnStretchFactor() const { return m_colStretch; } setColumnStretchFactor(int f)153 void setColumnStretchFactor(int f) { m_colStretch = f; } 154 rowSpacing()155 int rowSpacing() const { return m_rowSpacing; } setRowSpacing(int s)156 void setRowSpacing(int s) { m_rowSpacing = s; } columnSpacing()157 int columnSpacing() const { return m_colSpacing; } setColumnSpacing(int s)158 void setColumnSpacing(int s) { m_colSpacing = s; } 159 rowPreferredHeight()160 int rowPreferredHeight() const { return m_rowPrefHeight; } setRowPreferredHeight(int s)161 void setRowPreferredHeight(int s) { m_rowPrefHeight = s; } 162 rowMaximumHeight()163 int rowMaximumHeight() const { return m_rowMaxHeight; } setRowMaximumHeight(int s)164 void setRowMaximumHeight(int s) { m_rowMaxHeight = s; } 165 rowMinimumHeight()166 int rowMinimumHeight() const { return m_rowMinHeight; } setRowMinimumHeight(int s)167 void setRowMinimumHeight(int s) { m_rowMinHeight = s; } 168 rowFixedHeight()169 int rowFixedHeight() const { return m_rowFixHeight; } setRowFixedHeight(int s)170 void setRowFixedHeight(int s) { m_rowFixHeight = s; } 171 columnPreferredWidth()172 int columnPreferredWidth() const { return m_colPrefwidth; } setColumnPreferredWidth(int s)173 void setColumnPreferredWidth(int s) { m_colPrefwidth = s; } 174 columnMaximumWidth()175 int columnMaximumWidth() const { return m_colMaxwidth; } setColumnMaximumWidth(int s)176 void setColumnMaximumWidth(int s) { m_colMaxwidth = s; } 177 columnMinimumWidth()178 int columnMinimumWidth() const { return m_colMinwidth; } setColumnMinimumWidth(int s)179 void setColumnMinimumWidth(int s) { m_colMinwidth = s; } 180 columnFixedWidth()181 int columnFixedWidth() const { return m_colFixwidth; } setColumnFixedWidth(int s)182 void setColumnFixedWidth(int s) { m_colFixwidth = s; } 183 184 signals: 185 void alignmentChanged(QGraphicsLayoutItem*, Qt::Alignment); 186 187 private: 188 int m_row; 189 int m_column; 190 191 int m_rowspan; 192 int m_colspan; 193 Qt::Alignment m_alignment; 194 195 int m_rowStretch; 196 int m_colStretch; 197 int m_rowSpacing; 198 int m_colSpacing; 199 200 int m_rowPrefHeight; 201 int m_rowMaxHeight; 202 int m_rowMinHeight; 203 int m_rowFixHeight; 204 205 int m_colPrefwidth; 206 int m_colMaxwidth; 207 int m_colMinwidth; 208 int m_colFixwidth; 209 }; 210 211 QML_DECLARE_INTERFACE(QGraphicsLayoutItem) 212 QML_DECLARE_INTERFACE(QGraphicsLayout) 213 QML_DECLARE_TYPE(GraphicsGridLayoutObject) 214 QML_DECLARE_TYPEINFO(GraphicsGridLayoutObject, QML_HAS_ATTACHED_PROPERTIES) 215 216 #endif 217 218