1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/***************************************************************************
* Copyright (C) 2005 by Alexander Nemish *
* atlanter@gmail.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef RENDERER_H
#define RENDERER_H
#include <tqstringlist.h>
#include <tqfont.h>
#include <tqstring.h>
#include <tqobject.h>
#include <tqsize.h>
#include <tqtimer.h>
#include <vector>
#include <memory>
class TQStringList;
class TextLine
{
public:
static const int PARA_NONE = 0;
static const int PARA_START = 1;
static const int PARA_END = 2;
static const int PARA_BOTH = 3;
TextLine(int index, int begin, int end, int paraFlags = PARA_NONE):
m_paragraphFlags(paraFlags),
m_begin(begin),
m_end(end),
m_index(index)
{}
bool isParaStart() const { return m_paragraphFlags & PARA_START; }
bool isParaEnd() const { return m_paragraphFlags & PARA_END; }
void setParagraphFlags(int flags) { m_paragraphFlags = flags; }
const int paragraphFlags() const { return m_paragraphFlags; }
const int paragraphIndex() const { return m_index; }
const int begin() const { return m_begin; }
const int end() const { return m_end; }
const int size() const { return m_end - m_begin; }
private:
int m_paragraphFlags;
int m_begin;
int m_end;
int m_index;
};
/**
* \brief Renders input text into list of word wrapped strings
* \author Alexandr Nemish <anemish@gmail.com>
*/
class Renderer : public TQObject
{
TQ_OBJECT
public:
Renderer();
~Renderer();
/// \brief Loads and renders list of strings
void load(const TQStringList & list);
/// \brief Renders loaded list of strings
void render();
/// \brief Clears all rendered data
void clear();
/// \brief Draws page
void drawPage(TQPainter & paint, TQRect rect, int pageNumber);
//Getters
/// \brief Returns whether the text is empty
bool isEmpty() const { return m_text.empty(); };
/// \brief Returns current font
TQFont font() const { return m_font; }
/// \brief Returns current paragraph offset in pixels
int paraOffset() const { return m_paraOffset; }
/// \brief Returns the number of pages
int pageCount() const { return m_pageCount; }
/// \brief Returns page size in pixels
TQSize pageSize() const { return m_pageSize; }
//Setters
/// \brief Sets current font
void setFont(const TQFont & font);
/// \brief Sets current paragraph offset in pixels
void setParaOffset(int offset);
/// \brief Sets size of a page
void setPageSize(const TQSize & size);
bool busy() const { return m_isRendering; }
signals:
void renderingFinished();
private slots:
void timeout();
private:
typedef TQStringList::const_iterator TStringIter;
typedef std::vector<TQString> TParagraphs;
typedef TParagraphs::size_type TIndex;
typedef std::vector<TextLine> TLines;
//make it non-copyable
Renderer(const Renderer &);
Renderer & operator = (const Renderer &);
/// \brief Renders input paragraph into list of wrapped lines
void parseParagraph(TIndex idx);
/// \brief Returns width of string in pixels
int width(const TQString & a_string) const;
void addLine(TextLine line);
int wordAt(const TQString & str, int len);
TQString getWord(const TQString & str, int idx);
/// \brief Draws justified string
void drawLine(TQPainter& paint, int x, int y, const TLines::size_type idx);
void cancel();
TParagraphs m_text;
TLines m_lines;
int m_pageCount;
int m_linesPerPage;
int m_paraOffset;
TQFont m_font;
std::auto_ptr<TQFontMetrics> m_fontMetrics;
TQSize m_pageSize;
bool m_isStartAdded;
TIndex m_curParagraph;
bool m_isRendering;
TQTimer m_timer;
};
#endif
|
