/* ============================================================
 * File  : gpstatus.cpp
 * Author: Renchi Raju <renchi@pooh.tam.uiuc.edu>
 * Date  : 2003-01-21
 * Description : 
 * 
 * Copyright 2003 by Renchi Raju <renchi@pooh.tam.uiuc.edu>

 * This program 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, or (at your option)
 * any later version.
 * 
 * This program 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.
 * 
 * ============================================================ */

// Local
#include "gpstatus.h"
#include "gpmessages.h"

namespace KIPIKameraKlientPlugin
{

float GPStatus::target = 0.0;
bool  GPStatus::cancel = false;

GPStatus::GPStatus() : TQObject() {
    context = gp_context_new();
    cancel = false;
    gp_context_set_cancel_func(context, cancel_func, 0);
    gp_context_set_error_func(context, error_func, 0);
    gp_context_set_status_func(context, status_func, 0);
    gp_context_set_progress_funcs(context, progress_start_func, progress_update_func, progress_stop_func, 0);
}

GPStatus::~GPStatus() {
    if(context) {
	gp_context_unref(context);
    }
}

void GPStatus::cancelOperation() {
    cancel = true;    
}

GPContextFeedback GPStatus::cancel_func(GPContext *, void *) {
    return (cancel ? GP_CONTEXT_FEEDBACK_CANCEL : GP_CONTEXT_FEEDBACK_OK);
}

void GPStatus::error_func(GPContext *, const char *format, va_list args, void *) {
    char buf[4096] = "";
    int nSize = vsnprintf( buf, 4096, format, args );
    if(nSize > 4094) {
	nSize = 4094;
    }
    buf[nSize] = '\0';
    TQString error;
    error = error.fromLocal8Bit(buf);
    GPMessages::gpMessagesWrapper()->emit errorMessage(error);
}

void GPStatus::status_func (GPContext *, const char *format, va_list args, void *) {
    char buf[4096] = "";
    int nSize = vsnprintf( buf, 4096, format, args );
    if(nSize > 4094) {
	nSize = 4094;
    }
    buf[nSize] = '\0';
    TQString status;
    status = status.fromLocal8Bit(buf);
    GPMessages::gpMessagesWrapper()->emit statusChanged(status);
}

unsigned int GPStatus::progress_start_func(GPContext *, float _target, const char *format, va_list args, void *) {
    char buf[4096] = "";
    int nSize = vsnprintf( buf, 4096, format, args );
    if(nSize > 4094) {
	nSize = 4094;
    }
    buf[nSize] = '\0';
    TQString prog;
    prog = prog.fromLocal8Bit(buf);
    target = _target;
    return GP_OK;
}

void GPStatus::progress_update_func(GPContext *, unsigned int, float current, void *) {
    int percentage = int(100.0 * current/target);
    GPMessages::gpMessagesWrapper()->emit progressChanged(percentage);
}

void  GPStatus::progress_stop_func(GPContext *, unsigned int, void *) {
  GPMessages::gpMessagesWrapper()->emit progressChanged(0);
}

}  // NameSpace KIPIKameraKlientPlugin

#include "gpstatus.moc"
