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 Qt Quick Layouts 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 QQUICKLINEARLAYOUT_P_H |
41 | #define QQUICKLINEARLAYOUT_P_H |
42 | |
43 | #include "qquicklayout_p.h" |
44 | #include "qquickgridlayoutengine_p.h" |
45 | |
46 | QT_BEGIN_NAMESPACE |
47 | |
48 | /********************************** |
49 | ** |
50 | ** QQuickGridLayoutBase |
51 | ** |
52 | **/ |
53 | class QQuickGridLayoutBasePrivate; |
54 | |
55 | class QQuickGridLayoutBase : public QQuickLayout |
56 | { |
57 | Q_OBJECT |
58 | |
59 | Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged REVISION 1) |
60 | QML_ANONYMOUS |
61 | QML_ADDED_IN_MINOR_VERSION(1) |
62 | |
63 | public: |
64 | |
65 | QQuickGridLayoutBase(); |
66 | |
67 | explicit QQuickGridLayoutBase(QQuickGridLayoutBasePrivate &dd, |
68 | Qt::Orientation orientation, |
69 | QQuickItem *parent = 0); |
70 | |
71 | ~QQuickGridLayoutBase(); |
72 | void componentComplete() override; |
73 | void invalidate(QQuickItem *childItem = 0) override; |
74 | Qt::Orientation orientation() const; |
75 | void setOrientation(Qt::Orientation orientation); |
76 | QSizeF sizeHint(Qt::SizeHint whichSizeHint) const override; |
77 | Qt::LayoutDirection layoutDirection() const; |
78 | void setLayoutDirection(Qt::LayoutDirection dir); |
79 | Qt::LayoutDirection effectiveLayoutDirection() const; |
80 | void setAlignment(QQuickItem *item, Qt::Alignment align) override; |
81 | |
82 | /* QQuickItemChangeListener */ |
83 | void itemDestroyed(QQuickItem *item) override; |
84 | void itemVisibilityChanged(QQuickItem *item) override; |
85 | |
86 | protected: |
87 | void updateLayoutItems() override; |
88 | QQuickItem *itemAt(int index) const override; |
89 | int itemCount() const override; |
90 | |
91 | void rearrange(const QSizeF &size) override; |
92 | virtual void insertLayoutItems() {} |
93 | |
94 | signals: |
95 | Q_REVISION(1) void layoutDirectionChanged(); |
96 | |
97 | private: |
98 | void removeGridItem(QGridLayoutItem *gridItem); |
99 | Q_DECLARE_PRIVATE(QQuickGridLayoutBase) |
100 | }; |
101 | |
102 | class QQuickLayoutStyleInfo; |
103 | |
104 | class QQuickGridLayoutBasePrivate : public QQuickLayoutPrivate |
105 | { |
106 | Q_DECLARE_PUBLIC(QQuickGridLayoutBase) |
107 | |
108 | public: |
109 | QQuickGridLayoutBasePrivate() : m_recurRearrangeCounter(0) |
110 | , m_rearranging(false) |
111 | , m_updateAfterRearrange(false) |
112 | , m_layoutDirection(Qt::LeftToRight) |
113 | {} |
114 | |
115 | void mirrorChange() override |
116 | { |
117 | Q_Q(QQuickGridLayoutBase); |
118 | q->invalidate(); |
119 | } |
120 | |
121 | QQuickGridLayoutEngine engine; |
122 | Qt::Orientation orientation; |
123 | unsigned m_recurRearrangeCounter : 2; |
124 | unsigned m_rearranging : 1; |
125 | unsigned m_updateAfterRearrange : 1; |
126 | QVector<QQuickItem *> m_invalidateAfterRearrange; |
127 | Qt::LayoutDirection m_layoutDirection : 2; |
128 | |
129 | QQuickLayoutStyleInfo *styleInfo; |
130 | }; |
131 | |
132 | /********************************** |
133 | ** |
134 | ** QQuickGridLayout |
135 | ** |
136 | **/ |
137 | class QQuickGridLayoutPrivate; |
138 | class QQuickGridLayout : public QQuickGridLayoutBase |
139 | { |
140 | Q_OBJECT |
141 | |
142 | Q_PROPERTY(qreal columnSpacing READ columnSpacing WRITE setColumnSpacing NOTIFY columnSpacingChanged) |
143 | Q_PROPERTY(qreal rowSpacing READ rowSpacing WRITE setRowSpacing NOTIFY rowSpacingChanged) |
144 | Q_PROPERTY(int columns READ columns WRITE setColumns NOTIFY columnsChanged) |
145 | Q_PROPERTY(int rows READ rows WRITE setRows NOTIFY rowsChanged) |
146 | Q_PROPERTY(Flow flow READ flow WRITE setFlow NOTIFY flowChanged) |
147 | QML_NAMED_ELEMENT(GridLayout) |
148 | public: |
149 | explicit QQuickGridLayout(QQuickItem *parent = 0); |
150 | qreal columnSpacing() const; |
151 | void setColumnSpacing(qreal spacing); |
152 | qreal rowSpacing() const; |
153 | void setRowSpacing(qreal spacing); |
154 | |
155 | int columns() const; |
156 | void setColumns(int columns); |
157 | int rows() const; |
158 | void setRows(int rows); |
159 | |
160 | enum Flow { LeftToRight, TopToBottom }; |
161 | Q_ENUM(Flow) |
162 | Flow flow() const; |
163 | void setFlow(Flow flow); |
164 | |
165 | void insertLayoutItems() override; |
166 | |
167 | signals: |
168 | void columnSpacingChanged(); |
169 | void rowSpacingChanged(); |
170 | |
171 | void columnsChanged(); |
172 | void rowsChanged(); |
173 | |
174 | void flowChanged(); |
175 | private: |
176 | Q_DECLARE_PRIVATE(QQuickGridLayout) |
177 | }; |
178 | |
179 | class QQuickGridLayoutPrivate : public QQuickGridLayoutBasePrivate |
180 | { |
181 | Q_DECLARE_PUBLIC(QQuickGridLayout) |
182 | public: |
183 | QQuickGridLayoutPrivate(): columns(-1), rows(-1), flow(QQuickGridLayout::LeftToRight) {} |
184 | int columns; |
185 | int rows; |
186 | QQuickGridLayout::Flow flow; |
187 | }; |
188 | |
189 | |
190 | /********************************** |
191 | ** |
192 | ** QQuickLinearLayout |
193 | ** |
194 | **/ |
195 | class QQuickLinearLayoutPrivate; |
196 | class QQuickLinearLayout : public QQuickGridLayoutBase |
197 | { |
198 | Q_OBJECT |
199 | Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing NOTIFY spacingChanged) |
200 | public: |
201 | explicit QQuickLinearLayout(Qt::Orientation orientation, |
202 | QQuickItem *parent = 0); |
203 | void insertLayoutItem(QQuickItem *item); |
204 | qreal spacing() const; |
205 | void setSpacing(qreal spacing); |
206 | |
207 | void insertLayoutItems() override; |
208 | |
209 | signals: |
210 | void spacingChanged(); |
211 | private: |
212 | Q_DECLARE_PRIVATE(QQuickLinearLayout) |
213 | }; |
214 | |
215 | class QQuickLinearLayoutPrivate : public QQuickGridLayoutBasePrivate |
216 | { |
217 | Q_DECLARE_PUBLIC(QQuickLinearLayout) |
218 | public: |
219 | QQuickLinearLayoutPrivate() {} |
220 | }; |
221 | |
222 | |
223 | /********************************** |
224 | ** |
225 | ** QQuickRowLayout |
226 | ** |
227 | **/ |
228 | class QQuickRowLayout : public QQuickLinearLayout |
229 | { |
230 | Q_OBJECT |
231 | QML_NAMED_ELEMENT(RowLayout) |
232 | |
233 | public: |
234 | explicit QQuickRowLayout(QQuickItem *parent = 0) |
235 | : QQuickLinearLayout(Qt::Horizontal, parent) {} |
236 | }; |
237 | |
238 | |
239 | /********************************** |
240 | ** |
241 | ** QQuickColumnLayout |
242 | ** |
243 | **/ |
244 | class QQuickColumnLayout : public QQuickLinearLayout |
245 | { |
246 | Q_OBJECT |
247 | QML_NAMED_ELEMENT(ColumnLayout) |
248 | |
249 | public: |
250 | explicit QQuickColumnLayout(QQuickItem *parent = 0) |
251 | : QQuickLinearLayout(Qt::Vertical, parent) {} |
252 | }; |
253 | |
254 | QT_END_NAMESPACE |
255 | |
256 | #endif // QQUICKLINEARLAYOUT_P_H |
257 | |