Differential D7929 Diff 19762 src/filewidgets/kcolumnview_p.h

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src/filewidgets/kcolumnview_p.h

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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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22​** ensure the GNU Lesser General Public License version 3 requirements
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39​
40​#ifndef KCOLUMNVIEW_P_H
41​#define KCOLUMNVIEW_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 "kcolumnview.h"
55​
56​#include <QtCore/qabstractitemmodel.h>
57​#include <QtCore/qpropertyanimation.h>
58​#include <QtWidgets/qabstractitemdelegate.h>
59​#include <QtWidgets/qabstractitemview.h>
60​#include <QtWidgets/qitemdelegate.h>
61​#include <qlistview.h>
62​#include <qevent.h>
63​#include <qscrollbar.h>
64​
65​QT_REQUIRE_CONFIG(columnview);
66​
67​QT_BEGIN_NAMESPACE
68​
69​class KColumnViewPreviewColumn : public QAbstractItemView {
70​
71​public:
72​ explicit KColumnViewPreviewColumn(QWidget *parent) : QAbstractItemView(parent), previewWidget(0) {
73​ }
74​
75​ void setPreviewWidget(QWidget *widget) {
76​ previewWidget = widget;
77​ setMinimumWidth(previewWidget->minimumWidth());
78​ }
79​
80​ void resizeEvent(QResizeEvent * event) Q_DECL_OVERRIDE{
81​ if (!previewWidget)
82​ return;
83​ previewWidget->resize(
84​ qMax(previewWidget->minimumWidth(), event->size().width()),
85​ previewWidget->height());
86​ QSize p = viewport()->size();
87​ QSize v = previewWidget->size();
88​ horizontalScrollBar()->setRange(0, v.width() - p.width());
89​ horizontalScrollBar()->setPageStep(p.width());
90​ verticalScrollBar()->setRange(0, v.height() - p.height());
91​ verticalScrollBar()->setPageStep(p.height());
92​
93​ QAbstractScrollArea::resizeEvent(event);
94​ }
95​
96​ void scrollContentsBy(int dx, int dy) Q_DECL_OVERRIDE
97​ {
98​ if (!previewWidget)
99​ return;
100​ scrollDirtyRegion(dx, dy);
101​ viewport()->scroll(dx, dy);
102​
103​ QAbstractItemView::scrollContentsBy(dx, dy);
104​ }
105​
106​ QRect visualRect(const QModelIndex &) const Q_DECL_OVERRIDE
107​ {
108​ return QRect();
109​ }
110​ void scrollTo(const QModelIndex &, ScrollHint) Q_DECL_OVERRIDE
111​ {
112​ }
113​ QModelIndex indexAt(const QPoint &) const Q_DECL_OVERRIDE
114​ {
115​ return QModelIndex();
116​ }
117​ QModelIndex moveCursor(CursorAction, Qt::KeyboardModifiers) Q_DECL_OVERRIDE
118​ {
119​ return QModelIndex();
120​ }
121​ int horizontalOffset () const Q_DECL_OVERRIDE {
122​ return 0;
123​ }
124​ int verticalOffset () const Q_DECL_OVERRIDE {
125​ return 0;
126​ }
127​ QRegion visualRegionForSelection(const QItemSelection &) const Q_DECL_OVERRIDE
128​ {
129​ return QRegion();
130​ }
131​ bool isIndexHidden(const QModelIndex &) const Q_DECL_OVERRIDE
132​ {
133​ return false;
134​ }
135​ void setSelection(const QRect &, QItemSelectionModel::SelectionFlags) Q_DECL_OVERRIDE
136​ {
137​ }
138​private:
139​ QWidget *previewWidget;
140​};
141​
142​class Q_AUTOTEST_EXPORT KColumnView::Private
143​{
144​public:
145​ Private(KColumnView *parent);
146​ ~Private();
147​ void initialize();
148​
149​ QAbstractItemView *createColumn(const QModelIndex &index);
150​
151​ void updateScrollbars();
152​ void closeColumns(const QModelIndex &parent = QModelIndex(), bool build = false);
153​ void doLayout();
154​ void setPreviewWidget(QWidget *widget);
155​ void checkColumnCreation(const QModelIndex &parent);
156​
157​
158​ void _q_gripMoved(int offset);
159​ void _q_changeCurrentColumn();
160​ void _q_clicked(const QModelIndex &index);
161​ void _q_columnsInserted(const QModelIndex &parent, int start, int end);
162​ void _q_iconSizeChanged(QSize size);
163​
164​ KColumnView * const q;
165​
166​ QList<QAbstractItemView*> columns;
167​ QVector<int> columnSizes; // used during init and corner moving
168​ bool showResizeGrips;
169​ int offset;
170​#ifndef QT_NO_ANIMATION
171​ QPropertyAnimation currentAnimation;
172​#endif
173​ QWidget *previewWidget;
174​ QAbstractItemView *previewColumn;
175​};
176​
177​/*!
178​ * This is a delegate that will paint the triangle
179​ */
180​class KColumnViewDelegate : public QItemDelegate
181​{
182​
183​public:
184​ explicit KColumnViewDelegate(QObject *parent = 0) : QItemDelegate(parent) {}
185​ ~KColumnViewDelegate() {}
186​
187​ void paint(QPainter *painter,
188​ const QStyleOptionViewItem &option,
189​ const QModelIndex &index) const Q_DECL_OVERRIDE;
190​};
191​
192​QT_END_NAMESPACE
193​
194​#endif //KCOLUMNVIEW_P_H