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
|
/*
Crystal Space Windowing System: input line class
Copyright (C) 1998,1999 by Andrew Zabolotny <bit@eltech.ru>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __CSILINE_H__
#define __CSILINE_H__
#include "cscomp.h"
/// Possible input line frame styles
enum csInputLineFrameStyle
{
/// Input line has no frame
csifsNone,
/// Button has a thin 3D rectangular frame
csifsThinRect,
/// Input line has a thick 3D rectangular frame
csifsThickRect
};
/// Default input line maximal field length
#define CSIL_DEFAULTLENGTH 256
class csTimer;
/**
* The Input Line class implements a rectangular are where user can
* enter any text. The class has a method called IsValidChar() which can
* be overriden to implement specific needs, for example if you would
* like to implement a input line which accepts only numbers you can
* just override the method IsValidChar() and analyze entered characters.
* There is also a more general method called IsValidString() which
* checks the just-modified string for correctness. If method decides
* that string is incorrect, the changes are undone.
*/
class csInputLine : public csComponent
{
/// Input line frame style
csInputLineFrameStyle FrameStyle;
/// Maximal text line length
int maxlen;
/// Number of first visible text character
int firstchar;
/// Cursor character
int cursorpos;
/// Cursor coordinates
csRect cursorrect;
/// true if cursor is visible
bool cursorvis;
/// Text selection
int selstart, selend;
/// true if in insert mode
bool insert;
/// Top-Left corner of text
int textx, texty;
/// The timer used for cursor flashing
csTimer *timer;
public:
/// Create input line object
csInputLine (csComponent *iParent, int iMaxLen = CSIL_DEFAULTLENGTH,
csInputLineFrameStyle iFrameStyle = csifsThickRect);
/// Set text field
virtual void SetText (const char *iText);
/// Draw the input line
virtual void Draw ();
/// Handle external events
virtual bool HandleEvent (iEvent &Event);
/// Override SetState method to redraw input line when it is switched
virtual void SetState (int mask, bool enable);
/// Select text from character iStart to character iEnd
void SetSelection (int iStart, int iEnd);
/// Set new cursor position and extend selection if extendsel == true
void SetCursorPos (int NewPos, bool ExtendSel);
/// Report the minimal size of inputline
virtual void SuggestSize (int &w, int &h);
/// Check whenever new cursor position is valid
virtual bool IsValidPos (int NewPos);
/// Check whenever a character is valid for inserting into string
virtual bool IsValidChar (char iChar);
/// Check if string after modification is valid
virtual bool IsValidString (const char *iText);
/// Delete selection
void DeleteSelection ();
protected:
/// Query character X position within component
int GetCharX (int iNum);
/// Set text, drop the selection and don't move the cursor
void SetTextExt (const char *iText);
};
#endif // __CSILINE_H__
|
