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/* This file is part of the KDE project
* Copyright (C) 2006 Thomas Zander <zander@kde.org>
* Copyright (C) 2007 Sebastian Sauer <mail@dipe.org>
* Copyright (C) 2008 Thorsten Zachmann <zachmann@kde.org>
* Copyright (C) 2008 Girish Ramakrishnan <girish@forwardbias.in>
* Copyright (C) 2009-2011 KO GmbH <cbo@kogmbh.com>
* Copyright (C) 2011-2012 Pierre Stirnweiss <pstirnweiss@googlemail.com>
* Copyright (C) 2012 Gopalakrishna Bhat A <gopalakbhat@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KOSTYLETHUMBNAILER_H
#define KOSTYLETHUMBNAILER_H
#include "kritatextlayout_export.h"
#include <QSize>
class KoCharacterStyle;
class KoParagraphStyle;
class QImage;
/**
* Helper class to create (and cache) thumbnails of styles
*/
class KRITATEXTLAYOUT_EXPORT KoStyleThumbnailer
{
public:
enum KoStyleThumbnailerFlag {
NoFlags = 0,
CenterAlignThumbnail = 1, ///< Vertically Center Align the layout of the thumbnail
/// i.e the layout is done at the center of the area
UseStyleNameText = 2, ///< Use the style name as the text that is layouted inside the thumbnail
ScaleThumbnailFont = 4 ///< If set, then when the layout size is more than the size available
/// the font size is scaled down to fit the space availiable
};
Q_DECLARE_FLAGS(KoStyleThumbnailerFlags, KoStyleThumbnailerFlag)
/**
* Create a new style thumbnailer.
*/
explicit KoStyleThumbnailer();
/**
* Destructor.
*/
virtual ~KoStyleThumbnailer();
/**
* @returns a thumbnail representing the @param style, constrained into the @param size.
* If there is no specified @param size, the thunbnail is the size specified with @fn setThumbnailSize or 250*48 pt if no size was provided.
* If the given @param size is too small, the font size will be decreased, so the thumbnail fits.
* The real font size is indicated in this case.
* If @param recreateThumbnail is true, do not return the cached thumbnail if it exist, but recreate a new one.
* The created thumbnail is cached.
*/
QImage thumbnail(KoParagraphStyle *style,
const QSize &size = QSize(), bool recreateThumbnail = false,
KoStyleThumbnailerFlags flags =
KoStyleThumbnailerFlags(CenterAlignThumbnail | UseStyleNameText | ScaleThumbnailFont));
/**
* @returns a thumbnail representing the @param characterStyle applied on the given @param paragraphStyle, constrained into the @param size.
* If there is no specified @param size, the thunbnail is the size specified with @fn setThumbnailSize or 250*48 pt if no size was provided.
* If the given @param size is too small, the font size will be decreased, so the thumbnail fits.
* The real font size is indicated in this case.
* If @param recreateThumbnail is true, do not return the cached thumbnail if it exist, but recreate a new one.
* The created thumbnail is cached.
*/
QImage thumbnail(KoCharacterStyle *characterStyle, KoParagraphStyle *paragraphStyle = 0,
const QSize &size = QSize(), bool recreateThumbnail = false,
KoStyleThumbnailerFlags flags =
KoStyleThumbnailerFlags(CenterAlignThumbnail | UseStyleNameText | ScaleThumbnailFont));
/**
* Sets the size of the thumbnails returned by the @fn thumbnail with no size arguments.
*/
void setThumbnailSize(const QSize &size);
/**
* Sets the text that will be layouted.
* @param text The text that will be layouted inside the thumbnail
*If the UseStyleNameText flag is set then this text will not be used
*/
void setText(const QString &text);
/**
* remove all occurrences of the style from the cache
*/
void removeFromCache(KoParagraphStyle *style);
/**
* remove all occurrences of the style from the cache
*/
void removeFromCache(KoCharacterStyle *style);
private:
void layoutThumbnail(const QSize &size, QImage *im, KoStyleThumbnailerFlags flags);
void removeFromCache(const QString &expr);
class Private;
Private* const d;
};
#endif
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