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
|
/***************************************************************************
keditor.cpp - description
-------------------
begin : Sa Dez 4 2004
copyright : (C) 2004 by Friedrich W. H. Kossebau
email : Friedrich.W.H@Kossebau.de
***************************************************************************/
/***************************************************************************
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License version 2 as published by the Free Software Foundation. *
* *
***************************************************************************/
// lib specific
#include "kdatabuffer.h"
#include "kbufferranges.h"
#include "kbufferlayout.h"
#include "kbuffercursor.h"
#include "kwordbufferservice.h"
#include "khexedit.h"
#include "keditor.h"
using namespace KHE;
KEditor::KEditor( KBufferCursor *BC, KHexEdit* HE, KController *P )
: KController( HE, P ),
BufferCursor( BC )
{
}
bool KEditor::handleKeyPress( TQKeyEvent *KeyEvent )
{
bool clearUndoRedoInfo = true;
bool ShiftPressed = KeyEvent->state() & TQt::ShiftButton;
bool ControlPressed = KeyEvent->state() & TQt::ControlButton;
bool AltPressed = KeyEvent->state() & TQt::AltButton;
bool KeyUsed = true;
// we only care for cursor keys and the like, won't hardcode any other keys
// we also don't check whether the commands are allowed
// as the commands are also available as API so the check has to be done
// in each command anyway
switch( KeyEvent->key() )
{
case TQt::Key_Delete:
if( ShiftPressed )
HexEdit->cut();
else if( HexEdit->BufferRanges->hasSelection() )
HexEdit->removeSelectedData();
else
{
doEditAction( ControlPressed ? WordDelete : CharDelete );
clearUndoRedoInfo = false;
}
break;
case TQt::Key_Insert:
if( ShiftPressed )
HexEdit->paste();
else if( ControlPressed )
HexEdit->copy();
else
HexEdit->setOverwriteMode( !HexEdit->OverWrite );
break;
case TQt::Key_Backspace:
if( AltPressed )
{
if( ControlPressed )
break;
else if( ShiftPressed )
{
// HexEdit->redo();
break;
}
else
{
// HexEdit->undo();
break;
}
}
else if( HexEdit->BufferRanges->hasSelection() )
{
HexEdit->removeSelectedData();
break;
}
doEditAction( ControlPressed ? WordBackspace : CharBackspace );
clearUndoRedoInfo = false;
break;
case TQt::Key_F16: // "Copy" key on Sun keyboards
HexEdit->copy();
break;
case TQt::Key_F18: // "Paste" key on Sun keyboards
HexEdit->paste();
break;
case TQt::Key_F20: // "Cut" key on Sun keyboards
HexEdit->cut();
break;
default:
KeyUsed = false;
}
// if( clearUndoRedoInfo )
// clearUndoRedo();
// changeIntervalTimer->start( 100, true );
return KeyUsed ? true : KController::handleKeyPress(KeyEvent);
}
void KEditor::doEditAction( KEditAction Action )
{
KSection ChangedRange;
HexEdit->pauseCursor( true );
switch( Action )
{
case CharDelete:
if( !HexEdit->OverWrite )
{
int Index = BufferCursor->realIndex();
if( Index < HexEdit->BufferLayout->length() )
{
ChangedRange = HexEdit->removeData( KSection(Index,1,false) );
if( Index == HexEdit->BufferLayout->length() )
BufferCursor->gotoEnd();
}
}
break;
case WordDelete: // kills data until the start of the next word
if( !HexEdit->OverWrite )
{
int Index = BufferCursor->realIndex();
if( Index < HexEdit->BufferLayout->length() )
{
KWordBufferService WBS( HexEdit->DataBuffer, HexEdit->Codec );
int End = WBS.indexOfBeforeNextWordStart( Index );
ChangedRange = HexEdit->removeData( KSection(Index,End) );
if( Index == HexEdit->BufferLayout->length() )
BufferCursor->gotoEnd();
}
}
break;
case CharBackspace:
if( HexEdit->OverWrite )
BufferCursor->gotoPreviousByte();
else
{
int DeleteIndex = BufferCursor->realIndex() - 1;
if( DeleteIndex >= 0 )
{
ChangedRange = HexEdit->removeData( KSection(DeleteIndex,1,false) );
if( DeleteIndex == HexEdit->BufferLayout->length() )
BufferCursor->gotoEnd();
else
BufferCursor->gotoPreviousByte();
}
}
break;
case WordBackspace:
{
int LeftIndex = BufferCursor->realIndex() - 1;
if( LeftIndex >= 0 )
{
KWordBufferService WBS( HexEdit->DataBuffer, HexEdit->Codec );
int WordStart = WBS.indexOfPreviousWordStart( LeftIndex );
if( !HexEdit->OverWrite )
ChangedRange = HexEdit->removeData( KSection(WordStart,LeftIndex) );
if( WordStart == HexEdit->BufferLayout->length() )
BufferCursor->gotoEnd();
else
BufferCursor->gotoIndex(WordStart);
}
}
}
HexEdit->repaintChanged();
HexEdit->ensureCursorVisible();
HexEdit->unpauseCursor();
emit HexEdit->cursorPositionChanged( BufferCursor->index() );
if( ChangedRange.isValid() ) emit HexEdit->bufferChanged( ChangedRange.start(), ChangedRange.end() );
}
|
