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
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2005-2006 The ScummVM project
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $Header$
*/
#include "common/stdafx.h"
#include "gui/editable.h"
#include "gui/newgui.h"
namespace GUI {
EditableWidget::EditableWidget(GuiObject *boss, int x, int y, int w, int h, WidgetSize ws)
: Widget(boss, x, y, w, h) {
_caretVisible = false;
_caretTime = 0;
_caretPos = 0; // FIXME
_caretInverse = false;
_editScrollOffset = 0;
}
EditableWidget::~EditableWidget() {
}
void EditableWidget::setEditString(const String &str) {
// TODO: We probably should filter the input string here,
// e.g. using tryInsertChar.
_editString = str;
_caretPos = _editString.size();
_editScrollOffset = (g_gui.getStringWidth(_editString) - (getEditRect().width()));
if (_editScrollOffset < 0)
_editScrollOffset = 0;
}
bool EditableWidget::tryInsertChar(char c, int pos) {
if (isprint(c)) {
_editString.insertChar(c, pos);
return true;
}
return false;
}
void EditableWidget::handleTickle() {
uint32 time = getMillis();
if (_caretTime < time) {
_caretTime = time + kCaretBlinkTime;
drawCaret(_caretVisible);
}
}
bool EditableWidget::handleKeyDown(uint16 ascii, int keycode, int modifiers) {
bool handled = true;
bool dirty = false;
// First remove caret
if (_caretVisible)
drawCaret(true);
switch (keycode) {
case '\n': // enter/return
case '\r':
// confirm edit and exit editmode
endEditMode();
dirty = true;
break;
case 27: // escape
abortEditMode();
dirty = true;
break;
case 8: // backspace
if (_caretPos > 0) {
_caretPos--;
_editString.deleteChar(_caretPos);
dirty = true;
}
break;
case 127: // delete
_editString.deleteChar(_caretPos);
dirty = true;
break;
case 256 + 20: // left arrow
if (_caretPos > 0) {
dirty = setCaretPos(_caretPos - 1);
}
break;
case 256 + 19: // right arrow
if (_caretPos < (int)_editString.size()) {
dirty = setCaretPos(_caretPos + 1);
}
break;
case 256 + 22: // home
dirty = setCaretPos(0);
break;
case 256 + 23: // end
dirty = setCaretPos(_editString.size());
break;
default:
if (tryInsertChar((char)ascii, _caretPos)) {
_caretPos++;
dirty = true;
} else {
handled = false;
}
}
if (dirty)
draw();
return handled;
}
int EditableWidget::getCaretOffset() const {
int caretpos = 0;
for (int i = 0; i < _caretPos; i++)
caretpos += g_gui.getCharWidth(_editString[i]);
caretpos -= _editScrollOffset;
return caretpos;
}
void EditableWidget::drawCaret(bool erase) {
// Only draw if item is visible
if (!isVisible() || !_boss->isVisible())
return;
Common::Rect editRect = getEditRect();
int16 color = (erase ^ _caretInverse) ? g_gui._bgcolor : g_gui._textcolorhi;
int x = editRect.left;
int y = editRect.top + 1;
x += getCaretOffset();
if (y < 0 || y + editRect.height() - 2 >= _h)
return;
x += getAbsX();
y += getAbsY();
g_gui.vLine(x, y, y + editRect.height() - 2, color);
g_gui.addDirtyRect(x, y, 2, editRect.height() - 2);
_caretVisible = !erase;
}
bool EditableWidget::setCaretPos(int newPos) {
assert(newPos >= 0 && newPos <= (int)_editString.size());
_caretPos = newPos;
return adjustOffset();
}
bool EditableWidget::adjustOffset() {
// check if the caret is still within the textbox; if it isn't,
// adjust _editScrollOffset
int caretpos = getCaretOffset();
const int editWidth = getEditRect().width();
if (caretpos < 0) {
// scroll left
_editScrollOffset += caretpos;
return true;
} else if (caretpos >= editWidth) {
// scroll right
_editScrollOffset -= (editWidth - caretpos);
return true;
} else if (_editScrollOffset > 0) {
const int strWidth = g_gui.getStringWidth(_editString);
if (strWidth - _editScrollOffset < editWidth) {
// scroll right
_editScrollOffset = (strWidth - editWidth);
if (_editScrollOffset < 0)
_editScrollOffset = 0;
}
}
return false;
}
} // End of namespace GUI
|
