1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QQUICKTEXT_P_P_H
5#define QQUICKTEXT_P_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include "qquicktext_p.h"
19#include "qquickimplicitsizeitem_p_p.h"
20
21#include <QtQml/qqml.h>
22#include <QtGui/qabstracttextdocumentlayout.h>
23#include <QtGui/qtextlayout.h>
24#include <private/qquickstyledtext_p.h>
25#include <private/qlazilyallocated_p.h>
26
27QT_BEGIN_NAMESPACE
28
29class QTextLayout;
30class QQuickTextDocumentWithImageResources;
31
32class Q_QUICK_PRIVATE_EXPORT QQuickTextPrivate : public QQuickImplicitSizeItemPrivate
33{
34 Q_DECLARE_PUBLIC(QQuickText)
35public:
36 QQuickTextPrivate();
37 ~QQuickTextPrivate();
38 void init();
39
40 void updateBaseline(qreal baseline, qreal dy);
41 void updateSize();
42 void signalSizeChange(const QSizeF &previousSize);
43 void updateLayout();
44 bool determineHorizontalAlignment();
45 bool setHAlign(QQuickText::HAlignment, bool forceAlign = false);
46 void mirrorChange() override;
47 bool isLineLaidOutConnected();
48 void setLineGeometry(QTextLine &line, qreal lineWidth, qreal &height);
49
50 int lineHeightOffset() const;
51 QString elidedText(qreal lineWidth, const QTextLine &line, const QTextLine *nextLine = nullptr) const;
52 void elideFormats(int start, int length, int offset, QVector<QTextLayout::FormatRange> *elidedFormats);
53 void clearFormats();
54
55 void processHoverEvent(QHoverEvent *event);
56 bool transformChanged(QQuickItem *transformedItem) override;
57
58 QRectF layedOutTextRect;
59 QSizeF advance;
60
61 struct ExtraData {
62 ExtraData();
63
64 qreal padding;
65 qreal topPadding;
66 qreal leftPadding;
67 qreal rightPadding;
68 qreal bottomPadding;
69 bool explicitTopPadding : 1;
70 bool explicitLeftPadding : 1;
71 bool explicitRightPadding : 1;
72 bool explicitBottomPadding : 1;
73 qreal lineHeight;
74 QQuickTextDocumentWithImageResources *doc;
75 QString activeLink;
76 QString hoveredLink;
77 int minimumPixelSize;
78 int minimumPointSize;
79 int nbActiveDownloads;
80 int maximumLineCount;
81 int renderTypeQuality;
82 bool lineHeightValid : 1;
83 QQuickText::LineHeightMode lineHeightMode;
84 QQuickText::FontSizeMode fontSizeMode;
85 QList<QQuickStyledTextImgTag*> imgTags;
86 QList<QQuickStyledTextImgTag*> visibleImgTags;
87 QUrl baseUrl;
88 };
89 QLazilyAllocated<ExtraData> extra;
90
91 QString text;
92 QFont font;
93 QFont sourceFont;
94 QFontInfo fontInfo;
95
96 QTextLayout layout;
97 QTextLayout *elideLayout;
98 QQuickTextLine *textLine;
99
100 qreal lineWidth;
101
102 QRgb color;
103 QRgb linkColor;
104 QRgb styleColor;
105
106 int lineCount;
107 int multilengthEos;
108
109 enum UpdateType {
110 UpdateNone,
111 UpdatePreprocess,
112 UpdatePaintNode
113 };
114
115 QQuickText::TextElideMode elideMode;
116 QQuickText::HAlignment hAlign;
117 QQuickText::VAlignment vAlign;
118 QQuickText::TextFormat format;
119 QQuickText::WrapMode wrapMode;
120 QQuickText::TextStyle style;
121 QQuickText::RenderType renderType;
122 UpdateType updateType;
123
124 QString assignedFont;
125
126 bool maximumLineCountValid:1;
127 bool updateOnComponentComplete:1;
128 bool richText:1;
129 bool styledText:1;
130 bool markdownText:1;
131 bool widthExceeded:1;
132 bool heightExceeded:1;
133 bool internalWidthUpdate:1;
134 bool requireImplicitSize:1;
135 bool implicitWidthValid:1;
136 bool implicitHeightValid:1;
137 bool truncated:1;
138 bool hAlignImplicit:1;
139 bool rightToLeftText:1;
140 bool layoutTextElided:1;
141 bool textHasChanged:1;
142 bool needToUpdateLayout:1;
143 bool formatModifiesFontSize:1;
144 bool polishSize:1; // Workaround for problem with polish called after updateSize (QTBUG-42636)
145 bool updateSizeRecursionGuard:1;
146
147 static const QChar elideChar;
148 static const int largeTextSizeThreshold;
149
150 qreal getImplicitWidth() const override;
151 qreal getImplicitHeight() const override;
152
153 qreal availableWidth() const;
154 qreal availableHeight() const;
155
156 inline qreal padding() const { return extra.isAllocated() ? extra->padding : 0.0; }
157 void setTopPadding(qreal value, bool reset = false);
158 void setLeftPadding(qreal value, bool reset = false);
159 void setRightPadding(qreal value, bool reset = false);
160 void setBottomPadding(qreal value, bool reset = false);
161
162 void ensureDoc();
163 void updateDocumentText();
164
165 QRectF setupTextLayout(qreal * const baseline);
166 void setupCustomLineGeometry(QTextLine &line, qreal &height, int fullLayoutTextLength, int lineOffset = 0);
167 bool isLinkActivatedConnected();
168 bool isLinkHoveredConnected();
169 QStringList links() const;
170
171 struct LinkDesc {
172 QString m_anchor;
173 QString m_anchorTarget;
174 int m_startIndex;
175 int m_endIndex;
176 QRect rect;
177 };
178
179 QVector<LinkDesc> getLinks() const;
180
181 static QString anchorAt(const QTextLayout *layout, const QPointF &mousePos);
182 QString anchorAt(const QPointF &pos) const;
183
184 inline qreal lineHeight() const { return extra.isAllocated() ? extra->lineHeight : 1.0; }
185 inline int maximumLineCount() const { return extra.isAllocated() ? extra->maximumLineCount : INT_MAX; }
186 inline int renderTypeQuality() const { return extra.isAllocated() ? extra->renderTypeQuality : QQuickText::DefaultRenderTypeQuality; }
187 inline QQuickText::LineHeightMode lineHeightMode() const { return extra.isAllocated() ? extra->lineHeightMode : QQuickText::ProportionalHeight; }
188 inline QQuickText::FontSizeMode fontSizeMode() const { return extra.isAllocated() ? extra->fontSizeMode : QQuickText::FixedSize; }
189 inline int minimumPixelSize() const { return extra.isAllocated() ? extra->minimumPixelSize : 12; }
190 inline int minimumPointSize() const { return extra.isAllocated() ? extra->minimumPointSize : 12; }
191 static inline QQuickTextPrivate *get(QQuickText *t) { return t->d_func(); }
192};
193
194QT_END_NAMESPACE
195
196#endif // QQUICKTEXT_P_P_H
197

source code of qtdeclarative/src/quick/items/qquicktext_p_p.h