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
191
192
193
194
195
196
197
198
199
200
201
202
|
// TextButton.cc for Fluxbox Window Manager
// Copyright (c) 2003 - 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#include "TextButton.hh"
#include "TextUtils.hh"
#include "Font.hh"
#include "GContext.hh"
#include <cstdio>
namespace FbTk {
TextButton::TextButton(const FbTk::FbWindow &parent,
FbTk::Font &font,
const FbTk::BiDiString &text):
FbTk::Button(parent, 0, 0, 10, 10),
m_font(&font),
m_text(text),
m_justify(FbTk::LEFT),
m_orientation(FbTk::ROT0),
m_bevel(1),
m_left_padding(0),
m_right_padding(0) {
setRenderer(*this);
}
void TextButton::setJustify(FbTk::Justify just) {
m_justify = just;
}
bool TextButton::setOrientation(FbTk::Orientation orient) {
if (orient == m_orientation
|| !m_font->validOrientation(orient))
return false;
invalidateBackground();
if (((m_orientation == FbTk::ROT0 || m_orientation == FbTk::ROT180) &&
(orient == FbTk::ROT90 || orient == FbTk::ROT270)) ||
((m_orientation == FbTk::ROT90 || m_orientation == FbTk::ROT270) &&
(orient == FbTk::ROT0 || orient == FbTk::ROT180))) {
m_orientation = orient;
resize(height(), width());
} else {
m_orientation = orient;
}
return true;
}
void TextButton::setText(const FbTk::BiDiString &text) {
if (m_text.logical() != text.logical()) {
m_text = text;
updateBackground(false);
clear();
}
}
void TextButton::setFont(FbTk::Font &font) {
// no need to set new font if it's the same
if (&font == m_font)
return;
m_font = &font;
font.validOrientation(m_orientation); // load the orientation!
}
void TextButton::setTextPaddingLeft(unsigned int leftpadding) {
m_left_padding = leftpadding;
}
void TextButton::setTextPaddingRight(unsigned int rightpadding) {
m_right_padding = rightpadding;
}
void TextButton::setTextPadding(unsigned int padding) {
setTextPaddingLeft(padding/2);
setTextPaddingRight(padding/2);
}
/// clear window and redraw text
void TextButton::clear() {
TextButton::clearArea(0, 0, width(), height());
}
void TextButton::clearArea(int x, int y,
unsigned int width, unsigned int height,
bool exposure) {
Button::clearArea(x, y, width, height, exposure);
}
unsigned int TextButton::textWidth() const {
return font().textWidth(text());
}
void TextButton::renderForeground(FbWindow &win, FbDrawable &drawable) {
// (win should always be *this, no need to check)
drawText(0, 0, &drawable);
}
void TextButton::drawText(int x_offset, int y_offset, FbDrawable *drawable) {
if (drawable == 0)
drawable = this;
const FbString& visual = text().visual();
unsigned int textlen = visual.size();
unsigned int button_width = width();
unsigned int button_height = height();
const int max_width = static_cast<int>(button_width) - x_offset -
m_left_padding - m_right_padding;
if (max_width <= bevel()) {
return;
}
translateSize(m_orientation, button_width, button_height);
// horizontal alignment, cut off text if needed
int align_x = FbTk::doAlignment(max_width,
bevel(), justify(), font(),
visual.data(), visual.size(),
textlen); // return new text len
//
// we center the text vertically. to do this we have to nudge the
// baseline a little bit down so the "middle" of the glyph is placed
// on the middle of the button. we "assume", that ascent/2 is roughly
// the middle of the glyph. example:
//
// +== ascent <--------->== +=====================
// | | | |
// | | ggggg | | ascent <--------->
// | | g gg | | | |
// | baseline < glyph | | | ggggg |
// | | g | -- middle of button -- | | g gg |
// | descent < ggggg | | baseline < glyph |
// | height |_________| | | g |
// | | descent < ggggg |
// | | height |_________|
// | |
// +======================= +=====================
//
// ascent = 4
// button_height = 11
// baseline = (11 + 4) / 2 - 1 = 6
//
int baseline_x = align_x + x_offset + m_left_padding;
int baseline_y = ((button_height + font().ascent()) / 2) - 1 + y_offset;
// TODO: remove debug output fprintf(stderr, "%d | %d %d %d\n", height(), font().height(), font().ascent(), font().descent());
// give it ROT0 style coords
translateCoords(m_orientation, baseline_x, baseline_y, button_width, button_height);
font().drawText(*drawable, screenNumber(), gc(),
visual.c_str(), textlen,
baseline_x, baseline_y, m_orientation);
}
bool TextButton::textExceeds(int x_offset) {
const FbString& visual = text().visual();
unsigned int textlen = visual.size();
unsigned int button_width = width();
unsigned int button_height = height();
translateSize(m_orientation, button_width, button_height);
FbTk::doAlignment(button_width - x_offset - m_left_padding - m_right_padding,
bevel(), justify(), font(), visual.data(), visual.size(),
textlen); // return new text len
return visual.size() > textlen;
}
void TextButton::exposeEvent(XExposeEvent &event) {
clearArea(event.x, event.y, event.width, event.height, false);
}
} // end namespace FbTk
|
