File: commenteditor.C

package info (click to toggle)
mixviews 1.10-3
  • links: PTS
  • area: main
  • in suites: hamm
  • size: 2,440 kB
  • ctags: 6,314
  • sloc: cpp: 31,647; ansic: 2,100; makefile: 1,782; sh: 17
file content (183 lines) | stat: -rw-r--r-- 4,586 bytes parent folder | download | duplicates (4)
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
// commenteditor.C

/******************************************************************************
 *
 *  MiXViews - an X window system based sound & data editor/processor
 *
 *  Copyright (c) 1993, 1994 Regents of the University of California
 *
 *  Author:     Douglas Scott
 *  Date:       December 13, 1994
 *
 *  Permission to use, copy and modify this software and its documentation
 *  for research and/or educational purposes and without fee is hereby granted,
 *  provided that the above copyright notice appear in all copies and that
 *  both that copyright notice and this permission notice appear in
 *  supporting documentation. The author reserves the right to distribute this
 *  software and its documentation.  The University of California and the author
 *  make no representations about the suitability of this software for any 
 *  purpose, and in no event shall University of California be liable for any
 *  damage, loss of data, or profits resulting from its use.
 *  It is provided "as is" without express or implied warranty.
 *
 ******************************************************************************/


#ifdef __GNUG__
#pragma implementation
#endif

#include "commenteditor.h"

#include <InterViews/button.h>
#include <InterViews/sensor.h>
#include <InterViews/shape.h>
#include <InterViews/textbuffer.h>
#include <InterViews/textdisplay.h>
#include <stdlib.h>
#include <ctype.h>

#include "data.h"

/*****************************************************************************/

static const int gap = 2;
static const int rows = 6;
static const int cols = 80;
static const int tabs = 4;

/*****************************************************************************/

CommentEditor::CommentEditor(ButtonState* bs, Data* data)
		: TextEditor(rows, cols, tabs, Reversed), myData(data) {
    Init(bs);
}

CommentEditor::~CommentEditor() {
	if(_state != nil)
		_state->Detach(this);
	Resource::unref(myData);
	delete [] commtext;
	delete myTextBuffer;
}

void CommentEditor::Init (ButtonState* bs) {
    SetClassName("CommentEditor");
    input = new Sensor;
    input->Catch(DownEvent);
    input->Catch(KeyEvent);

	_state = bs;
	if(_state != nil)
		_state->Attach(this);
	myData->ref();
	const char* text = myData->comment();
	commtext = new char[rows*cols];
    strcpy(commtext, text);
	myTextBuffer = new TextBuffer(commtext, strlen(text), rows*cols);
    Edit(myTextBuffer);
}

void
CommentEditor::save() {
	myData->setComment(commtext);
}

void
CommentEditor::revert() {
}
	
void CommentEditor::Handle (Event& e) {
	boolean done = false;
	do {
		if (e.eventType == KeyEvent && e.len > 0) {
            HandleChar(e.keystring[0]);
		}
		else if (e.eventType == DownEvent) {
			if (e.target == this)
				HandleDownEvent(e);
			else {
                UnRead(e);
                done = true;
            }
        }
		if(!done)
			Read(e);
	} while(!done);
}

void CommentEditor::LeftMouse (Event& e) {
    Select(Locate(e.x, e.y));
    do {
        ScrollToView(e.x, e.y);
        SelectMore(Locate(e.x, e.y));
        Poll(e);
    } while (e.leftmouse);
}

void
CommentEditor::HandleDownEvent (Event& e) {
    if (e.target == this) {
        switch (e.button) {
            case LEFTMOUSE:     LeftMouse(e); break;
            case MIDDLEMOUSE:   GrabScroll(e); break;
            case RIGHTMOUSE:    RateScroll(e); break;
        }

    } else {
        UnRead(e);
    }
}

void
CommentEditor::HandleChar (char c) {
    int lines = display->LineNumber(0) - display->LineNumber(ymax) + 1;
    int i;
    char copy = c;

    switch (c) {
    case '\026':  ForwardPage(1); break;
    case '\001':  BeginningOfLine(); break;
    case '\005':  EndOfLine(); break;
    case '\006':  ForwardCharacter(1); break;
    case '\002':  BackwardCharacter(1); break;
    case '\016':  ForwardLine(1); break;
    case '\020':  BackwardLine(1); break;
    case '\004':
        if (Dot() != Mark()) {
            DeleteSelection();
        } else {
            DeleteText(1);
        }
        break;

    case '\010':
    case '\177':
        if (Dot() != Mark()) {
            DeleteSelection();
        } else {
            DeleteText(-1);
        }
        break;
        
    case '\011':
        copy = '\t'; 
        DeleteSelection();
        InsertText(&copy, 1);
        break;

    case '\015':
        copy = '\n'; 
        DeleteSelection();
        InsertText(&copy, 1);
        break;

    default:
        if (!iscntrl(c)) {
            DeleteSelection();
            InsertText(&copy, 1);
        }
        break;
    }
    ScrollToSelection();
}