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/*
Gwenview - A simple image viewer for TDE
Copyright 2000-2006 Aurelien Gateau
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
of the License, 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef DOCUMENT_H
#define DOCUMENT_H
// TQt
#include <tqcstring.h>
#include <tqobject.h>
#include <tqimage.h>
// KDE
#include <kurl.h>
#include <kprinter.h>
// Local
#include "imageutils/orientation.h"
#include "mimetypeutils.h"
#include "libgwenview_export.h"
namespace TDEIO { class Job; }
namespace Gwenview {
class DocumentPrivate;
class DocumentImpl;
/**
* The application document.
* It knows what the current url is and will emit signals when
* loading/loaded/modified...
*
* The ordering of loading() and loaded() signals is:
* - setURL() is called
* - URL is stated
* - loading() is emitted (may be skipped if no loading is needed, e.g. wrong URL)
* - image is being loaded
* - loaded() is emitted
*/
class LIBGWENVIEW_EXPORT Document : public TQObject {
Q_OBJECT
public:
enum CommentState { NONE=0, READ_ONLY=1, WRITABLE=2 };
Document(TQObject*);
~Document();
// Properties
const TQImage& image() const;
KURL url() const;
KURL dirURL() const;
TQString filename() const;
const TQCString& imageFormat() const;
int fileSize() const;
TQString mimeType() const;
MimeTypeUtils::Kind urlKind() const;
bool isModified() const;
/**
* Returns true if Gwenview knows how to save such an image
*/
bool canBeSaved() const;
// Convenience methods
bool isNull() const { return image().isNull(); }
int width() const { return image().width(); }
int height() const { return image().height(); }
Document::CommentState commentState() const;
TQString comment() const;
void setComment(const TQString&);
TQString aperture() const;
TQString exposureTime() const;
TQString iso() const;
TQString focalLength() const;
int duration() const;
public slots:
void setURL(const KURL&);
void setDirURL(const KURL&);
void reload();
/**
* Save to the current file.
*/
void save();
void saveAs();
/** print the selected file */
void print(KPrinter *pPrinter);
/**
* If the image has been modified, prompt the user to save the changes.
*/
void saveBeforeClosing();
// "Image manipulation"
void transform(ImageUtils::Orientation);
signals:
/**
* Emitted when the class starts to load the image.
*/
void loading();
/**
* Emitted when the class has finished loading the image.
* Also emitted if the image could not be loaded.
*/
void loaded(const KURL& url);
/**
* Emitted when the image has been modified.
*/
void modified();
/**
* Emitted when the image has been saved on disk.
*/
void saved(const KURL& url);
/**
* Emitted when the image has been reloaded.
*/
void reloaded(const KURL& url);
/**
* Emitted to show a part of the image must be refreshed
*/
void rectUpdated(const TQRect& rect);
/**
* Emitted when the size is known
*/
void sizeUpdated();
/**
* Emitted when something goes wrong, like when save fails
*/
void errorHappened(const TQString& message);
private slots:
void slotStatResult(TDEIO::Job*);
void slotFinished(bool success);
void slotLoading();
void slotLoaded();
private:
friend class DocumentImpl;
friend class DocumentPrivate;
DocumentPrivate* d;
// These methods are used by DocumentImpl and derived
void switchToImpl(DocumentImpl*);
void setImage(TQImage);
void setImageFormat(const TQCString&);
void setMimeType(const TQString&);
void setFileSize(int);
void reset();
void load();
void doPaint(KPrinter *pPrinter, TQPainter *p);
/**
* The returned string is null if the image was successfully saved,
* otherwise it's the translated error message.
*/
TQString saveInternal(const KURL& url, const TQCString& format);
Document(const Document&);
Document &operator=(const Document&);
};
} // namespace
#endif
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