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
|
// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
#include "config.h"
#include "label.hh"
#include "display.hh"
#include "rendercontrol.hh"
#include <string>
namespace otk {
Label::Label(Widget *parent)
: Widget(parent),
_text(""),
_justify_horz(RenderStyle::LeftTopJustify),
_justify_vert(RenderStyle::LeftTopJustify),
_highlight(false)
{
styleChanged(*RenderStyle::style(screen()));
}
Label::~Label()
{
}
void Label::setHorizontalJustify(RenderStyle::Justify j)
{
_justify_horz = j;
refresh();
}
void Label::setVerticalJustify(RenderStyle::Justify j)
{
_justify_vert = j;
refresh();
}
void Label::setHighlighted(bool h)
{
_highlight = h;
styleChanged(*RenderStyle::style(screen()));
refresh();
}
void Label::setText(const ustring &text)
{
bool utf = text.utf8();
std::string s = text.c_str(); // use a normal string, for its functionality
_parsedtext.clear();
// parse it into multiple lines
std::string::size_type p = 0;
while (p != std::string::npos) {
std::string::size_type p2 = s.find('\n', p);
_parsedtext.push_back(s.substr(p, (p2==std::string::npos?p2:p2-p)));
_parsedtext.back().setUtf8(utf);
p = (p2==std::string::npos?p2:p2+1);
}
calcDefaultSizes();
}
void Label::setFont(const Font *f)
{
_font = f;
calcDefaultSizes();
}
void Label::calcDefaultSizes()
{
int longest = 0;
// find the longest line
std::vector<ustring>::iterator it, end = _parsedtext.end();
for (it = _parsedtext.begin(); it != end; ++it) {
int length = _font->measureString(*it);
if (length < 0) continue; // lines too long get skipped
if (length > longest) longest = length;
}
setMinSize(Size(longest + borderWidth() * 2 + bevel() * 4,
_parsedtext.size() * _font->height() + borderWidth() * 2 +
bevel() * 2));
}
void Label::styleChanged(const RenderStyle &style)
{
if (_highlight) {
_texture = style.labelFocusBackground();
_forecolor = style.textFocusColor();
} else {
_texture = style.labelUnfocusBackground();
_forecolor = style.textUnfocusColor();
}
if (_font != style.labelFont()) {
_font = style.labelFont();
calcDefaultSizes();
}
}
void Label::renderForeground(Surface &surface)
{
const RenderControl *control = display->renderControl(screen());
int sidemargin = bevel() * 2;
int y = bevel();
int w = area().width() - borderWidth() * 2 - sidemargin * 2;
int h = area().height() - borderWidth() * 2 - bevel() * 2;
switch (_justify_vert) {
case RenderStyle::RightBottomJustify:
y += h - (_parsedtext.size() * _font->height());
if (y < bevel()) y = bevel();
break;
case RenderStyle::CenterJustify:
y += (h - (_parsedtext.size() * _font->height())) / 2;
if (y < bevel()) y = bevel();
break;
case RenderStyle::LeftTopJustify:
break;
}
if (w <= 0) return; // can't fit anything
std::vector<ustring>::iterator it, end = _parsedtext.end();
for (it = _parsedtext.begin(); it != end; ++it, y += _font->height()) {
ustring t = *it; // the actual text to draw
int x = sidemargin; // x coord for the text
// find a string that will fit inside the area for text
ustring::size_type text_len = t.size();
int length;
do {
t.resize(text_len);
length = _font->measureString(t);
} while (length > w && text_len-- > 0);
if (length < 0) continue; // lines too long get skipped
if (text_len <= 0) continue; // won't fit anything
// justify the text
switch (_justify_horz) {
case RenderStyle::RightBottomJustify:
x += w - length;
break;
case RenderStyle::CenterJustify:
x += (w - length) / 2;
break;
case RenderStyle::LeftTopJustify:
break;
}
control->drawString(surface, *_font, x, y, *_forecolor, t);
}
}
}
|
