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39
40#ifndef QPLAINTEXTEDIT_P_H
41#define QPLAINTEXTEDIT_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 purely as an
48// implementation detail. 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 "private/qabstractscrollarea_p.h"
56#include "QtGui/qtextdocumentfragment.h"
57#if QT_CONFIG(scrollbar)
58#include "QtWidgets/qscrollbar.h"
59#endif
60#include "QtGui/qtextcursor.h"
61#include "QtGui/qtextformat.h"
62#if QT_CONFIG(menu)
63#include "QtWidgets/qmenu.h"
64#endif
65#include "QtGui/qabstracttextdocumentlayout.h"
66#include "QtCore/qbasictimer.h"
67#include "qplaintextedit.h"
68
69#include "private/qwidgettextcontrol_p.h"
70
71QT_REQUIRE_CONFIG(textedit);
72
73QT_BEGIN_NAMESPACE
74
75class QMimeData;
76
77class QPlainTextEdit;
78class ExtraArea;
79
80class QPlainTextEditControl : public QWidgetTextControl
81{
82 Q_OBJECT
83public:
84 QPlainTextEditControl(QPlainTextEdit *parent);
85
86
87 QMimeData *createMimeDataFromSelection() const override;
88 bool canInsertFromMimeData(const QMimeData *source) const override;
89 void insertFromMimeData(const QMimeData *source) override;
90 int hitTest(const QPointF &point, Qt::HitTestAccuracy = Qt::FuzzyHit) const override;
91 QRectF blockBoundingRect(const QTextBlock &block) const override;
92 QString anchorAt(const QPointF &pos) const override;
93 inline QRectF cursorRect(const QTextCursor &cursor) const {
94 QRectF r = QWidgetTextControl::cursorRect(cursor);
95 r.setLeft(qMax(a: r.left(), b: (qreal) 0.));
96 return r;
97 }
98 inline QRectF cursorRect() { return cursorRect(cursor: textCursor()); }
99 void ensureCursorVisible() override {
100 textEdit->ensureCursorVisible();
101 emit microFocusChanged();
102 }
103
104
105 QPlainTextEdit *textEdit;
106 int topBlock;
107 QTextBlock firstVisibleBlock() const;
108
109 QVariant loadResource(int type, const QUrl &name) override {
110 return textEdit->loadResource(type, name);
111 }
112
113};
114
115
116class QPlainTextEditPrivate : public QAbstractScrollAreaPrivate
117{
118 Q_DECLARE_PUBLIC(QPlainTextEdit)
119public:
120 QPlainTextEditPrivate();
121
122 void init(const QString &txt = QString());
123 void _q_repaintContents(const QRectF &contentsRect);
124 void _q_textChanged();
125
126 inline QPoint mapToContents(const QPoint &point) const
127 { return QPoint(point.x() + horizontalOffset(), point.y() + verticalOffset()); }
128
129 void _q_adjustScrollbars();
130 void _q_verticalScrollbarActionTriggered(int action);
131 void ensureViewportLayouted();
132 void relayoutDocument();
133
134 void pageUpDown(QTextCursor::MoveOperation op, QTextCursor::MoveMode moveMode, bool moveCursor = true);
135
136 inline int horizontalOffset() const
137 { return (q_func()->isRightToLeft() ? (hbar->maximum() - hbar->value()) : hbar->value()); }
138 qreal verticalOffset(int topBlock, int topLine) const;
139 qreal verticalOffset() const;
140
141 inline void sendControlEvent(QEvent *e)
142 { control->processEvent(e, coordinateOffset: QPointF(horizontalOffset(), verticalOffset()), contextWidget: viewport); }
143
144 void updateDefaultTextOption();
145
146 QPlainTextEditControl *control;
147
148 bool tabChangesFocus;
149
150 QBasicTimer autoScrollTimer;
151 QPoint autoScrollDragPos;
152
153 QPlainTextEdit::LineWrapMode lineWrap;
154 QTextOption::WrapMode wordWrap;
155
156 uint showCursorOnInitialShow : 1;
157 uint backgroundVisible : 1;
158 uint centerOnScroll : 1;
159 uint inDrag : 1;
160 uint clickCausedFocus : 1;
161 uint placeholderVisible : 1;
162
163 int topLine;
164 qreal topLineFracture; // for non-int sized fonts
165
166 void setTopLine(int visualTopLine, int dx = 0);
167 void setTopBlock(int newTopBlock, int newTopLine, int dx = 0);
168
169 void ensureVisible(int position, bool center, bool forceCenter = false);
170 void ensureCursorVisible(bool center = false);
171 void updateViewport();
172
173 QPointer<QPlainTextDocumentLayout> documentLayoutPtr;
174
175 void append(const QString &text, Qt::TextFormat format = Qt::AutoText);
176
177 qreal pageUpDownLastCursorY;
178 bool pageUpDownLastCursorYIsValid;
179
180
181#ifdef QT_KEYPAD_NAVIGATION
182 QBasicTimer deleteAllTimer;
183#endif
184
185 void _q_cursorPositionChanged();
186 void _q_modificationChanged(bool);
187
188 int originalOffsetY;
189 QString placeholderText;
190};
191
192QT_END_NAMESPACE
193
194#endif // QPLAINTEXTEDIT_P_H
195

source code of qtbase/src/widgets/widgets/qplaintextedit_p.h