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 QSVGGRAPHICS_P_H
5#define QSVGGRAPHICS_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 "qsvgnode_p.h"
19#include "qtsvgglobal_p.h"
20
21#include "QtGui/qpainterpath.h"
22#include "QtGui/qimage.h"
23#include "QtGui/qtextlayout.h"
24#include "QtGui/qtextoption.h"
25#include "QtCore/qloggingcategory.h"
26#include "QtCore/qstack.h"
27
28QT_BEGIN_NAMESPACE
29
30Q_DECLARE_LOGGING_CATEGORY(lcSvgDraw);
31
32class QTextCharFormat;
33
34class Q_SVG_EXPORT QSvgDummyNode : public QSvgNode
35{
36public:
37 void drawCommand(QPainter *, QSvgExtraStates &) override;
38 Type type() const override;
39};
40
41class Q_SVG_EXPORT QSvgEllipse : public QSvgNode
42{
43public:
44 QSvgEllipse(QSvgNode *parent, const QRectF &rect);
45 bool separateFillStroke() const override;
46 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
47 Type type() const override;
48 QRectF internalFastBounds(QPainter *p, QSvgExtraStates &states) const override;
49 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
50 QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;
51 QRectF rect() const { return m_bounds; }
52private:
53 QRectF m_bounds;
54};
55
56class Q_SVG_EXPORT QSvgCircle : public QSvgEllipse
57{
58public:
59 QSvgCircle(QSvgNode *parent, const QRectF &rect) : QSvgEllipse(parent, rect) { }
60 Type type() const override;
61};
62
63class Q_SVG_EXPORT QSvgImage : public QSvgNode
64{
65public:
66 QSvgImage(QSvgNode *parent,
67 const QImage &image,
68 const QString &filename,
69 const QRectF &bounds);
70 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
71 Type type() const override;
72 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
73
74 QRectF rect() const { return m_bounds; }
75 const QImage &image() const { return m_image; }
76 QString filename() const { return m_filename; }
77private:
78 QString m_filename;
79 QImage m_image;
80 QRectF m_bounds;
81};
82
83class Q_SVG_EXPORT QSvgLine : public QSvgNode
84{
85public:
86 QSvgLine(QSvgNode *parent, const QLineF &line);
87 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
88 Type type() const override;
89 QRectF internalFastBounds(QPainter *p, QSvgExtraStates &states) const override;
90 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
91 QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;
92 bool requiresGroupRendering() const override;
93 QLineF line() const { return m_line; }
94private:
95 QRectF internalBounds(QPainter *p, QSvgExtraStates &states, BoundsMode mode) const;
96 QLineF m_line;
97};
98
99class Q_SVG_EXPORT QSvgPath : public QSvgNode
100{
101public:
102 QSvgPath(QSvgNode *parent, const QPainterPath &qpath);
103 bool separateFillStroke() const override;
104 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
105 Type type() const override;
106 QRectF internalFastBounds(QPainter *p, QSvgExtraStates &states) const override;
107 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
108 QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;
109 bool requiresGroupRendering() const override;
110 const QPainterPath &path() const { return m_path; }
111private:
112 QPainterPath m_path;
113};
114
115class Q_SVG_EXPORT QSvgPolygon : public QSvgNode
116{
117public:
118 QSvgPolygon(QSvgNode *parent, const QPolygonF &poly);
119 bool separateFillStroke() const override;
120 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
121 Type type() const override;
122 QRectF internalFastBounds(QPainter *p, QSvgExtraStates &states) const override;
123 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
124 QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;
125 bool requiresGroupRendering() const override;
126 const QPolygonF &polygon() const { return m_poly; }
127private:
128 QRectF internalBounds(QPainter *p, QSvgExtraStates &states, BoundsMode mode) const;
129 QPolygonF m_poly;
130};
131
132class Q_SVG_EXPORT QSvgPolyline : public QSvgNode
133{
134public:
135 QSvgPolyline(QSvgNode *parent, const QPolygonF &poly);
136 bool separateFillStroke() const override;
137 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
138 Type type() const override;
139 QRectF internalFastBounds(QPainter *p, QSvgExtraStates &states) const override;
140 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
141 QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;
142 bool requiresGroupRendering() const override;
143 const QPolygonF &polygon() const { return m_poly; }
144private:
145 QRectF internalBounds(QPainter *p, QSvgExtraStates &states, BoundsMode mode) const;
146 QPolygonF m_poly;
147};
148
149class Q_SVG_EXPORT QSvgRect : public QSvgNode
150{
151public:
152 QSvgRect(QSvgNode *paren, const QRectF &rect, qreal rx=0, qreal ry=0);
153 Type type() const override;
154 bool separateFillStroke() const override;
155 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
156 QRectF internalFastBounds(QPainter *p, QSvgExtraStates &states) const override;
157 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
158 QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;
159 QRectF rect() const { return m_rect; }
160 QPointF radius() const { return { m_rx, m_ry }; }
161private:
162 QRectF internalBounds(QPainter *p, QSvgExtraStates &states, BoundsMode mode) const;
163 QRectF m_rect;
164 qreal m_rx, m_ry;
165};
166
167class QSvgTspan;
168
169class Q_SVG_EXPORT QSvgText : public QSvgNode
170{
171public:
172 enum WhitespaceMode
173 {
174 Default,
175 Preserve
176 };
177
178 QSvgText(QSvgNode *parent, const QPointF &coord);
179 ~QSvgText();
180 void setTextArea(const QSizeF &size);
181
182 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
183 bool shouldDrawNode(QPainter *p, QSvgExtraStates &states) const override;
184 Type type() const override;
185 bool separateFillStroke() const override;
186
187 void addTspan(QSvgTspan *tspan) {m_tspans.append(t: tspan);}
188 const QList<QSvgTspan *> tspans() const { return m_tspans; }
189 void addText(QStringView text);
190 void addLineBreak() {m_tspans.append(t: LINEBREAK);}
191 void setWhitespaceMode(WhitespaceMode mode) {m_mode = mode;}
192
193 QRectF internalFastBounds(QPainter *p, QSvgExtraStates &states) const override;
194 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
195
196 QPointF position() const { return m_coord; }
197 QSizeF size() const { return m_size; }
198 WhitespaceMode whitespaceMode() const { return m_mode; }
199
200private:
201 void draw_helper(QPainter *p, QSvgExtraStates &states, QRectF *boundingRect = nullptr) const;
202
203 static QSvgTspan * const LINEBREAK;
204
205 QPointF m_coord;
206
207 // 'm_tspans' is also used to store characters outside tspans and line breaks.
208 // If a 'm_tspan' item is null, it indicates a line break.
209 QList<QSvgTspan *> m_tspans;
210
211 Type m_type;
212 QSizeF m_size;
213 WhitespaceMode m_mode;
214};
215
216class Q_SVG_EXPORT QSvgTspan : public QSvgNode
217{
218public:
219 // tspans are also used to store normal text, so the 'isProperTspan' is used to separate text from tspan.
220 QSvgTspan(QSvgNode *parent, bool isProperTspan = true)
221 : QSvgNode(parent), m_mode(QSvgText::Default), m_isTspan(isProperTspan)
222 {
223 }
224 ~QSvgTspan() { };
225 Type type() const override { return Tspan; }
226 void drawCommand(QPainter *, QSvgExtraStates &) override { Q_ASSERT(!"Tspans should be drawn through QSvgText::draw()."); }
227 void addText(QStringView text) {m_text += text;}
228 const QString &text() const {return m_text;}
229 bool isTspan() const {return m_isTspan;}
230 void setWhitespaceMode(QSvgText::WhitespaceMode mode) {m_mode = mode;}
231 QSvgText::WhitespaceMode whitespaceMode() const {return m_mode;}
232private:
233 QString m_text;
234 QSvgText::WhitespaceMode m_mode;
235 bool m_isTspan;
236};
237
238class QSvgUse : public QSvgNode
239{
240public:
241 QSvgUse(const QPointF &start, QSvgNode *parent, QSvgNode *link);
242 QSvgUse(const QPointF &start, QSvgNode *parent, const QString &linkId)
243 : QSvgUse(start, parent, nullptr)
244 { m_linkId = linkId; }
245 void drawCommand(QPainter *p, QSvgExtraStates &states) override;
246 Type type() const override;
247 QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;
248 QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;
249 bool isResolved() const { return m_link != nullptr; }
250 const QString &linkId() const { return m_linkId; }
251 void setLink(QSvgNode *link) { m_link = link; }
252 QSvgNode *link() const { return m_link; }
253 QPointF start() const { return m_start; }
254 bool isRecursing() const { return m_recursing; }
255
256private:
257 QSvgNode *m_link;
258 QPointF m_start;
259 QString m_linkId;
260 mutable bool m_recursing;
261};
262
263class QSvgVideo : public QSvgNode
264{
265public:
266 void drawCommand(QPainter *, QSvgExtraStates &) override {};
267 Type type() const override;
268};
269
270QT_END_NAMESPACE
271
272#endif // QSVGGRAPHICS_P_H
273

source code of qtsvg/src/svg/qsvggraphics_p.h