kognitiondoc.cpp

vc++数字图像识别技术典型案例

/******************************************************************************
 * 光学字符识别程序
 * 文件名：kognitiondoc.cpp
 * 功能  ：文档类相关函数实现
 * modified by [e-mail]
******************************************************************************/

// Qt相关头文件
#include <qdir.h>
#include <qwidget.h>

// KDE相关头文件
#include <klocale.h>
#include <kmessagebox.h>
#include <kio/job.h>
#include <kio/netaccess.h>

// 应用相关头文件
#include "kognitiondoc.h"
#include "kognition.h"

KognitionDoc::KognitionDoc( KognitionApp *app, const char *name ) : Page( app, name )
{
	img = new Image( app ); // 预装载图像
}

KognitionDoc::~KognitionDoc()
{
	if ( img )
		delete img;
	img = NULL;
}

void KognitionDoc::setURL(const KURL &url)
{
	doc_url=url;
}

const KURL& KognitionDoc::URL() const
{
	return doc_url;
}

bool KognitionDoc::saveModified()
{
	bool completed=true;

	if(modified)
	{
		KognitionApp *win=(KognitionApp *) parent();
		int want_save = KMessageBox::warningYesNoCancel(win, i18n("Warning"),
							i18n("The current file has been modified.\n"
							     "Do you want to save it?"));
		switch(want_save)
		{
			case 1: if(doc_url.fileName() == i18n("Untitled"))
					win->slotFileSaveAs();
				else
					saveDocument(URL());
				deleteContents();
				completed=true;
				break;
			case 2:	setModified(false);
				deleteContents();
				completed=true;
				break;
			case 3: completed=false;
				break;
			default:completed=false;
		}
	}
	return completed;
}

void KognitionDoc::closeDocument()
{
	deleteContents();
}

bool KognitionDoc::newDocument()
{
	modified=false;
	doc_url.setFileName(i18n("Untitled"));
	return true;
}

bool KognitionDoc::openDocument(const KURL& url, const char *data_base_def)
{
	QString tmpfile;
	KIO::NetAccess::download( url, tmpfile );

	bool success = load( tmpfile );
	if ( success )
		recognize(data_base_def);
	KIO::NetAccess::removeTempFile( tmpfile );
	modified = false;
	return success;
}

bool KognitionDoc::saveDocument(const KURL& /*url*/, const char * /*format*/)
{
	modified=false;
	return true;
}

void KognitionDoc::deleteContents()
{
}