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/**********************************************************************
* File: debugwin.h
* Description: Portable debug window class.
* Author: Ray Smith
* Created: Wed Feb 21 15:36:59 MST 1996
*
* (C) Copyright 1996, Hewlett-Packard Co.
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
** http://www.apache.org/licenses/LICENSE-2.0
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*
**********************************************************************/
#ifndef DEBUGWIN_H
#define DEBUGWIN_H
#include "host.h"
#include "varable.h"
#ifdef __MAC__
#include <lwindow.h>
#include <lcommander.h>
#endif
//the following define the default position of a debug window
//if not specified at construction
#define DEBUG_WIN_XPOS 50 //default position
#define DEBUG_WIN_YPOS 30 //default position
#define DEBUG_WIN_XSIZE 700 //default size
#define DEBUG_WIN_YSIZE 300 //default size
//number of lines in the scrollable area of the window
extern DLLSYM INT_VAR_H (debug_lines, 256, "Number of lines in debug window");
//the API for the debug window is simple, see below.
//Most of its behaviour is its UI.
//It has a scrollable text area (most of the window)
//It has a stop control.
//It has a clear button.
//A dprintf to the window causes the text to be sent to the
//text area. If the stop control is set, then the dprintf
//blocks (does not display anything or return) until the stop
//is released.
//In multi-threaded apps, other threads and the UI continue to
//function during the stop. Only the calling thread is blocked.
//Pressing the clear button erases all text from the window.
//As text is sent to the window, it scrolls up so that the most
//recent output is visible. If the user has scrolled back, this
//does not happen. If the user scrolls back to the bottom, then
//the scrolling turns back on.
//If the user destroys the window, it never comes back.
class DLLSYM DEBUG_WIN
{
public:
//the constructor creates the window, the destructor kills it
DEBUG_WIN ( //constructor
const char *title, //of window
inT32 xpos = DEBUG_WIN_XPOS,//initial position
inT32 ypos = DEBUG_WIN_YPOS,//in pixels
//initial size
inT32 xsize = DEBUG_WIN_XSIZE,
//in pixels
inT32 ysize = DEBUG_WIN_YSIZE,
//default scroll size (textlines)
inT32 buflines = debug_lines);
~DEBUG_WIN (); //destructor
void dprintf ( //printf to window
const char *format, ...); //message
void await_destruction(); //wait for user to close
#ifdef __MAC__
static void SetCommander(LCommander *pCommander);
#endif
private:
#ifdef __MSW32__
HWND handle; //handle to window
char *shm_mem; //shared memory
char *msg_end; //current string
HANDLE shm_hand; //handle to it
HANDLE dbg_process; //handle to it
HANDLE dbg_thread; //handle to it
#endif
#ifdef __UNIX__
FILE *fp; /*return file */
#endif
#ifdef __MAC__
LWindow *pWindow;
#endif
};
#endif
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