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39
40#ifndef QCOLUMNVIEW_P_H
41#define QCOLUMNVIEW_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of other Qt classes. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtWidgets/private/qtwidgetsglobal_p.h>
55#include "qcolumnview.h"
56
57#include <private/qabstractitemview_p.h>
58
59#include <QtCore/qabstractitemmodel.h>
60#if QT_CONFIG(animation)
61#include <QtCore/qpropertyanimation.h>
62#endif
63#include <QtWidgets/qabstractitemdelegate.h>
64#include <QtWidgets/qabstractitemview.h>
65#include <QtWidgets/qstyleditemdelegate.h>
66#include <qlistview.h>
67#include <qevent.h>
68#include <qscrollbar.h>
69
70QT_REQUIRE_CONFIG(columnview);
71
72QT_BEGIN_NAMESPACE
73
74class QColumnViewPreviewColumn : public QAbstractItemView {
75
76public:
77 explicit QColumnViewPreviewColumn(QWidget *parent) : QAbstractItemView(parent), previewWidget(nullptr) {
78 }
79
80 void setPreviewWidget(QWidget *widget) {
81 previewWidget = widget;
82 setMinimumWidth(previewWidget->minimumWidth());
83 }
84
85 void resizeEvent(QResizeEvent * event) override{
86 if (!previewWidget)
87 return;
88 previewWidget->resize(
89 qMax(previewWidget->minimumWidth(), event->size().width()),
90 previewWidget->height());
91 QSize p = viewport()->size();
92 QSize v = previewWidget->size();
93 horizontalScrollBar()->setRange(0, v.width() - p.width());
94 horizontalScrollBar()->setPageStep(p.width());
95 verticalScrollBar()->setRange(0, v.height() - p.height());
96 verticalScrollBar()->setPageStep(p.height());
97
98 QAbstractScrollArea::resizeEvent(event);
99 }
100
101 void scrollContentsBy(int dx, int dy) override
102 {
103 if (!previewWidget)
104 return;
105 scrollDirtyRegion(dx, dy);
106 viewport()->scroll(dx, dy);
107
108 QAbstractItemView::scrollContentsBy(dx, dy);
109 }
110
111 QRect visualRect(const QModelIndex &) const override
112 {
113 return QRect();
114 }
115 void scrollTo(const QModelIndex &, ScrollHint) override
116 {
117 }
118 QModelIndex indexAt(const QPoint &) const override
119 {
120 return QModelIndex();
121 }
122 QModelIndex moveCursor(CursorAction, Qt::KeyboardModifiers) override
123 {
124 return QModelIndex();
125 }
126 int horizontalOffset () const override {
127 return 0;
128 }
129 int verticalOffset () const override {
130 return 0;
131 }
132 QRegion visualRegionForSelection(const QItemSelection &) const override
133 {
134 return QRegion();
135 }
136 bool isIndexHidden(const QModelIndex &) const override
137 {
138 return false;
139 }
140 void setSelection(const QRect &, QItemSelectionModel::SelectionFlags) override
141 {
142 }
143private:
144 QWidget *previewWidget;
145};
146
147class Q_AUTOTEST_EXPORT QColumnViewPrivate : public QAbstractItemViewPrivate
148{
149 Q_DECLARE_PUBLIC(QColumnView)
150
151public:
152 QColumnViewPrivate();
153 ~QColumnViewPrivate();
154 void initialize();
155
156 QAbstractItemView *createColumn(const QModelIndex &index, bool show);
157
158 void updateScrollbars();
159 void closeColumns(const QModelIndex &parent = QModelIndex(), bool build = false);
160 void doLayout();
161 void setPreviewWidget(QWidget *widget);
162 void checkColumnCreation(const QModelIndex &parent);
163
164
165 void _q_gripMoved(int offset);
166 void _q_changeCurrentColumn();
167 void _q_clicked(const QModelIndex &index);
168 void _q_columnsInserted(const QModelIndex &parent, int start, int end) override;
169
170 QList<QAbstractItemView*> columns;
171 QList<int> columnSizes; // used during init and corner moving
172 bool showResizeGrips;
173 int offset;
174#if QT_CONFIG(animation)
175 QPropertyAnimation currentAnimation;
176#endif
177 QWidget *previewWidget;
178 QAbstractItemView *previewColumn;
179};
180
181/*!
182 * This is a delegate that will paint the triangle
183 */
184class QColumnViewDelegate : public QStyledItemDelegate
185{
186
187public:
188 explicit QColumnViewDelegate(QObject *parent = nullptr) : QStyledItemDelegate(parent) {}
189 ~QColumnViewDelegate() {}
190
191 void paint(QPainter *painter,
192 const QStyleOptionViewItem &option,
193 const QModelIndex &index) const override;
194};
195
196QT_END_NAMESPACE
197
198#endif //QCOLUMNVIEW_P_H
199