git.iko.soy/unity8
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unity8/plugins/DashViews/abstractdashview.h
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1/*
2 * Copyright (C) 2013, 2014 Canonical, Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
17#ifndef ABSTRACTDASHVIEW_H
18#define ABSTRACTDASHVIEW_H
20#include <QQuickItem>
22class QAbstractItemModel;
23class QQmlComponent;
24#pragma GCC diagnostic push
25#pragma GCC diagnostic ignored "-pedantic"
26#if (QT_VERSION < QT_VERSION_CHECK(5, 1, 0))
27#include <private/qquickvisualdatamodel_p.h>
28#else
29#include <private/qqmldelegatemodel_p.h>
30#include <qqmlinfo.h>
31#endif
32#pragma GCC diagnostic pop
34class AbstractDashView : public QQuickItem
36 Q_OBJECT
38 Q_PROPERTY(QAbstractItemModel *model READ model WRITE setModel NOTIFY modelChanged)
39 Q_PROPERTY(QQmlComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
40 Q_PROPERTY(qreal columnSpacing READ columnSpacing WRITE setColumnSpacing NOTIFY columnSpacingChanged)
41 Q_PROPERTY(qreal rowSpacing READ rowSpacing WRITE setRowSpacing NOTIFY rowSpacingChanged)
42 Q_PROPERTY(qreal delegateCreationBegin READ delegateCreationBegin
43 WRITE setDelegateCreationBegin
44 NOTIFY delegateCreationBeginChanged
45 RESET resetDelegateCreationBegin)
46 Q_PROPERTY(qreal delegateCreationEnd READ delegateCreationEnd
47 WRITE setDelegateCreationEnd
48 NOTIFY delegateCreationEndChanged
49 RESET resetDelegateCreationEnd)
51friend class VerticalJournalTest;
52friend class HorizontalJournalTest;
53friend class OrganicGridTest;
55public:
56 AbstractDashView();
58 QAbstractItemModel *model() const;
59 void setModel(QAbstractItemModel *model);
61 QQmlComponent *delegate() const;
62 void setDelegate(QQmlComponent *delegate);
64 qreal columnSpacing() const;
65 void setColumnSpacing(qreal columnSpacing);
67 qreal rowSpacing() const;
68 void setRowSpacing(qreal rowSpacing);
70 qreal delegateCreationBegin() const;
71 void setDelegateCreationBegin(qreal);
72 void resetDelegateCreationBegin();
74 qreal delegateCreationEnd() const;
75 void setDelegateCreationEnd(qreal);
76 void resetDelegateCreationEnd();
78Q_SIGNALS:
79 void modelChanged();
80 void delegateChanged();
81 void columnSpacingChanged();
82 void rowSpacingChanged();
83 void delegateCreationBeginChanged();
84 void delegateCreationEndChanged();
86protected Q_SLOTS:
87 void relayout();
89protected:
90 void updatePolish() override;
91 void componentComplete() override;
93 void releaseItem(QQuickItem *item);
94 void setImplicitHeightDirty();
96private Q_SLOTS:
97#if (QT_VERSION < QT_VERSION_CHECK(5, 1, 0))
98 void itemCreated(int modelIndex, QQuickItem *item);
99 void onModelUpdated(const QQuickChangeSet &changeSet, bool reset);
100#else
101 void itemCreated(int modelIndex, QObject *object);
102 void onModelUpdated(const QQmlChangeSet &changeSet, bool reset);
103#endif
104 void onHeightChanged();
106private:
107 void createDelegateModel();
108 void refill();
109 bool addVisibleItems(qreal fillFromY, qreal fillToY, bool asynchronous);
110 QQuickItem *createItem(int modelIndex, bool asynchronous);
112 virtual void findBottomModelIndexToAdd(int *modelIndex, qreal *yPos) = 0;
113 virtual void findTopModelIndexToAdd(int *modelIndex, qreal *yPos) = 0;
114 virtual void addItemToView(int modelIndex, QQuickItem *item) = 0;
115 virtual bool removeNonVisibleItems(qreal bufferFromY, qreal bufferToY) = 0;
116 virtual void cleanupExistingItems() = 0;
117 virtual void doRelayout() = 0;
118 virtual void updateItemCulling(qreal visibleFromY, qreal visibleToY) = 0;
119 virtual void calculateImplicitHeight() = 0;
120#if (QT_VERSION < QT_VERSION_CHECK(5, 1, 0))
121 virtual void processModelRemoves(const QVector<QQuickChangeSet::Remove> &removes) = 0;
122#else
123 virtual void processModelRemoves(const QVector<QQmlChangeSet::Remove> &removes) = 0;
124#endif
126#if (QT_VERSION < QT_VERSION_CHECK(5, 1, 0))
127 QQuickVisualDataModel *m_delegateModel;
128#else
129 QQmlDelegateModel *m_delegateModel;
130#endif
132 // Index we are waiting because we requested it asynchronously
133 int m_asyncRequestedIndex;
135 int m_columnSpacing;
136 int m_rowSpacing;
137 qreal m_delegateCreationBegin;
138 qreal m_delegateCreationEnd;
139 bool m_delegateCreationBeginValid;
140 bool m_delegateCreationEndValid;
141 bool m_needsRelayout;
142 bool m_delegateValidated;
143 bool m_implicitHeightDirty;
144};
146#endif