mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-27 18:43:45 +01:00
127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
|
|
*
|
|
* This 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 software 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 software; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
//
|
|
// TXLabel.h
|
|
//
|
|
// An TXLabel allows you to put up multiline text in a window with various
|
|
// alignments. The label must be big enough to contain the text - if not then
|
|
// it will be resized appropriately.
|
|
//
|
|
|
|
#ifndef __TXLABEL_H__
|
|
#define __TXLABEL_H__
|
|
|
|
#include <stdlib.h>
|
|
#include "TXWindow.h"
|
|
#include <rfb/util.h>
|
|
|
|
class TXLabel : public TXWindow, public TXEventHandler {
|
|
public:
|
|
enum HAlign { left, centre, right };
|
|
enum VAlign { top, middle, bottom };
|
|
|
|
TXLabel(Display* dpy_, const char* text_, TXWindow* parent_=0,
|
|
int w=1, int h=1, HAlign ha=centre, VAlign va=middle)
|
|
: TXWindow(dpy_, w, h, parent_), lineSpacing(2), lines(0),
|
|
halign(ha), valign(va)
|
|
{
|
|
setEventHandler(this);
|
|
setText(text_);
|
|
addEventMask(ExposureMask);
|
|
}
|
|
|
|
// setText() changes the text in the label.
|
|
void setText(const char* text_) {
|
|
text.buf = rfb::strDup(text_);
|
|
lines = 0;
|
|
int lineStart = 0;
|
|
int textWidth = 0;
|
|
int i = -1;
|
|
do {
|
|
i++;
|
|
if (text.buf[i] == '\n' || text.buf[i] == 0) {
|
|
int tw = XTextWidth(defaultFS, &text.buf[lineStart], i-lineStart);
|
|
if (tw > textWidth) textWidth = tw;
|
|
lineStart = i+1;
|
|
lines++;
|
|
}
|
|
} while (text.buf[i] != 0);
|
|
int textHeight = ((defaultFS->ascent + defaultFS->descent + lineSpacing)
|
|
* lines);
|
|
int newWidth = __rfbmax(width(), textWidth + xPad*2);
|
|
int newHeight = __rfbmax(height(), textHeight + yPad*2);
|
|
if (width() < newWidth || height() < newHeight) {
|
|
resize(newWidth, newHeight);
|
|
}
|
|
invalidate();
|
|
}
|
|
|
|
private:
|
|
int xOffset(int textWidth) {
|
|
switch (halign) {
|
|
case left: return xPad;
|
|
case right: return width() - xPad - textWidth;
|
|
default: return (width() - textWidth) / 2;
|
|
}
|
|
}
|
|
|
|
int yOffset(int lineNum) {
|
|
int textHeight = ((defaultFS->ascent + defaultFS->descent + lineSpacing)
|
|
* lines);
|
|
int lineOffset = ((defaultFS->ascent + defaultFS->descent + lineSpacing)
|
|
* lineNum + defaultFS->ascent);
|
|
switch (valign) {
|
|
case top: return yPad + lineOffset;
|
|
case bottom: return height() - yPad - textHeight + lineOffset;
|
|
default: return (height() - textHeight) / 2 + lineOffset;
|
|
}
|
|
}
|
|
|
|
void paint() {
|
|
int lineNum = 0;
|
|
int lineStart = 0;
|
|
int i = -1;
|
|
do {
|
|
i++;
|
|
if (text.buf[i] == '\n' || text.buf[i] == 0) {
|
|
int tw = XTextWidth(defaultFS, &text.buf[lineStart], i-lineStart);
|
|
XDrawString(dpy, win(), defaultGC, xOffset(tw), yOffset(lineNum),
|
|
&text.buf[lineStart], i-lineStart);
|
|
lineStart = i+1;
|
|
lineNum++;
|
|
}
|
|
} while (text.buf[i] != 0);
|
|
}
|
|
|
|
virtual void handleEvent(TXWindow* w, XEvent* ev) {
|
|
switch (ev->type) {
|
|
case Expose:
|
|
paint();
|
|
break;
|
|
}
|
|
}
|
|
|
|
int lineSpacing;
|
|
rfb::CharArray text;
|
|
int lines;
|
|
HAlign halign;
|
|
VAlign valign;
|
|
};
|
|
|
|
#endif
|