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EXAMPLES
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IFB
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STRINGBU.C
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C/C++ Source or Header
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1992-02-04
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4KB
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135 lines
/*
* Copyright (c) 1989 Stanford University
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Stanford not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Stanford makes no representations about
* the suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
* IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* a RadioButton with an editable value
*/
#include "stringbu.h"
#include <InterViews/event.h>
#include <InterViews/font.h>
#include <InterViews/painter.h>
#include <InterViews/shape.h>
#include <InterViews/textdisplay.h>
#include <ctype.h>
#include <string.h>
StringButton::StringButton (
ButtonState* s, const char* sample
) : (sample, s, nil) {
Init();
}
StringButton::StringButton (
const char* name, ButtonState* s, const char* sample
) : (sample, s, nil) {
SetInstance(name);
Init();
}
StringButton::~StringButton () {
delete text;
delete display;
}
void StringButton::Init () {
text = new char[1000];
text[0] = '\0';
value = (void*)text;
display = new TextDisplay();
display->ReplaceText(0, text, strlen(text));
display->CaretStyle(NoCaret);
offset = 0;
}
void StringButton::Reconfig () {
RadioButton::Reconfig();
shape->width += 4;
shape->height += 4;
}
void StringButton::Resize () {
int h = output->GetFont()->Height();
offset = h;
display->LineHeight(h);
display->Resize(offset+2, 2, xmax-2, ymax-2);
}
void StringButton::Handle (Event& e) {
if (e.eventType == DownEvent && e.x > ymax) {
hit = true;
Refresh();
boolean done = false;
int p = strlen(text);
display->Draw(output, canvas);
display->CaretStyle(BarCaret);
do {
switch (e.eventType) {
case KeyEvent:
char c = e.keystring[0];
if (e.len > 0) {
if (c == '\015') {
done = true;
} else if (c == '\177') {
if (p > 0) {
--p;
text[p] = '\0';
display->DeleteText(0, p, 1);
}
} else if (!iscntrl(c)) {
text[p] = c;
display->InsertText(0, p, &c, 1);
++p;
text[p] = '\0';
}
}
break;
case DownEvent:
if (e.target != this) {
UnRead(e);
done = true;
}
break;
}
display->Caret(0, p);
if (!done) {
Read(e);
}
} while (!done);
display->CaretStyle(NoCaret);
hit = false;
Refresh();
subject->SetValue(value);
subject->Notify();
} else {
RadioButton::Handle(e);
}
}
void StringButton::Redraw (Coord l, Coord b, Coord r, Coord t) {
display->Draw(output, canvas);
display->Redraw(l, b, r, t);
output->Rect(canvas, offset, 0, xmax, ymax);
Refresh();
}