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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
**************************************************************************
description
--------------------
copyright : (C) 2002 by Andreas Zehender
email : [email protected]
**************************************************************************
**************************************************************************
* *
* 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. *
* *
**************************************************************************/
#include "pmformulalabel.h"
#include "pmpolynomexponents.h"
#include <tqapplication.h>
#include <tqsimplerichtext.h>
#include <tqpainter.h>
const int c_indent = 3;
const int c_dotSize = 3;
TQString PMFormulaLabel::s_xyz[3] =
{
TQString( "x" ), TQString( "y" ), TQString( "z" )
};
TQString PMFormulaLabel::s_digit[10] =
{
TQString( "0" ),
TQString( "1" ),
TQString( "2" ),
TQString( "3" ),
TQString( "4" ),
TQString( "5" ),
TQString( "6" ),
TQString( "7" ),
TQString( "8" ),
TQString( "9" )
};
TQString PMFormulaLabel::s_nullString = TQString( "= 0" );
PMFormulaLabel::PMFormulaLabel( const PMPolynomExponents& exp, TQWidget* parent, const char* name )
: TQWidget( parent, name )
{
m_exponents[0] = exp.exponent( 0 );
m_exponents[1] = exp.exponent( 1 );
m_exponents[2] = exp.exponent( 2 );
calculateSizeHint( );
}
PMFormulaLabel::PMFormulaLabel( int x, int y, int z, TQWidget* parent, const char* name )
: TQWidget( parent, name )
{
m_exponents[0] = x;
m_exponents[1] = y;
m_exponents[2] = z;
calculateSizeHint( );
}
PMFormulaLabel::~PMFormulaLabel( )
{
}
void PMFormulaLabel::drawContents( TQPainter* p )
{
TQRect cr = rect( );
int i;
cr.setLeft( cr.left( ) + c_indent );
int sum = m_exponents[0] + m_exponents[1] + m_exponents[2];
if( sum == 0 )
p->drawText( cr, TQt::AlignVCenter | TQt::AlignLeft, s_nullString );
else
{
// draw dot
int center = ( cr.top( ) + cr.bottom( ) ) / 2;
int rad = c_dotSize / 2;
p->setBrush( TQBrush( colorGroup( ).text( ) ) );
p->drawEllipse( cr.left( ), center - rad, c_dotSize, c_dotSize );
cr.setLeft( cr.left( ) + c_dotSize + c_indent );
TQFontMetrics m1( font( ) );
TQFont f2 = exponentFont( );
TQFontMetrics m2( f2 );
int up = m1.height( ) / 2;
for( i = 0; i < 3; i++ )
{
if( m_exponents[i] > 0 )
{
p->drawText( cr, TQt::AlignVCenter | TQt::AlignLeft, s_xyz[i] );
cr.setLeft( cr.left( ) + m1.width( s_xyz[i] ) );
if( m_exponents[i] > 1 )
{
cr.setBottom( cr.bottom( ) - up );
p->setFont( f2 );
p->drawText( cr, TQt::AlignVCenter | TQt::AlignLeft,
s_digit[m_exponents[i]] );
cr.setLeft( cr.left( ) + m2.width( s_digit[m_exponents[i]] ) + 1 );
cr.setBottom( cr.bottom( ) + up );
p->setFont( font( ) );
}
}
}
}
}
void PMFormulaLabel::paintEvent( TQPaintEvent* ev )
{
TQPainter paint( this );
if( ev->rect( ).intersects( rect( ) ) )
{
paint.setClipRegion( ev->region( ).intersect( rect( ) ) );
drawContents( &paint );
}
}
void PMFormulaLabel::calculateSizeHint( )
{
int sum = m_exponents[0] + m_exponents[1] + m_exponents[2];
TQFontMetrics m1( font( ) );
if( sum == 0 )
m_sizeHint.setWidth( m1.width( s_nullString ) );
else
{
TQFontMetrics m2( exponentFont( ) );
int width = c_indent * 3 + c_dotSize;
int i;
for( i = 0; i < 3; i++ )
{
if( m_exponents[i] > 0 )
{
width += m1.width( s_xyz[i] );
if( m_exponents[i] > 1 )
width += m2.width( s_digit[m_exponents[i]] ) + 1;
}
}
m_sizeHint.setWidth( width );
}
m_sizeHint.setHeight( m1.height( ) + 7 );
}
TQSize PMFormulaLabel::sizeHint( ) const
{
return minimumSizeHint( );
}
TQSize PMFormulaLabel::minimumSizeHint( ) const
{
return m_sizeHint;
}
void PMFormulaLabel::fontChange( const TQFont& )
{
calculateSizeHint( );
}
TQFont PMFormulaLabel::exponentFont( ) const
{
TQFont small = font( );
int fs = small.pointSize( );
if( fs > 0 )
{
fs = fs * 2 / 3;
if( fs == 0 )
fs = 1;
small.setPointSize( fs );
}
else
{
fs = small.pixelSize( );
fs = fs * 2 / 3;
if( fs == 0 )
fs = 1;
small.setPixelSize( fs );
}
return small;
}
|
