/*
    csshelper.h

    This file is part of KMail, the KDE mail client.
    Copyright (c) 2003 Marc Mutz <mutz@kde.org>

    KMail is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License, version 2, as
    published by the Free Software Foundation.

    KMail 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

    In addition, as a special exception, the copyright holders give
    permission to link the code of this program with any edition of
    the TQt library by Trolltech AS, Norway (or with modified versions
    of TQt that use the same license as TQt), and distribute linked
    combinations including the two.  You must obey the GNU General
    Public License in all respects for all of the code used other than
    TQt.  If you modify this file, you may extend this exception to
    your version of the file, but you are not obligated to do so.  If
    you do not wish to do so, delete this exception statement from
    your version.
*/

#ifndef KPIM_CSSHELPER_H
#define KPIM_CSSHELPER_H

#include <tqcolor.h>
#include <tqfont.h>
#include <tqpaintdevicemetrics.h>

class TQString;

namespace KPIM {

class CSSHelper {
  public:
    /** Construct a CSSHelper object and set its font and color settings to
        default values.
        Sub-Classes should put their config loading here.
     */
    CSSHelper( const TQPaintDeviceMetrics &pdm );

    /** @return HTML head including style sheet definitions and the
        &gt;body&lt; tag */
    TQString htmlHead( bool fixedFont = false ) const;

    /** @return The collected CSS definitions as a string */
    TQString cssDefinitions( bool fixedFont = false ) const;

    /** @return a &lt;div&gt; start tag with embedded style
        information suitable for quoted text with quote level @p level */
    TQString quoteFontTag( int level ) const;
    /** @return a &lt;div&gt; start tag with embedded style
        information suitable for non-quoted text */
    TQString nonQuotedFontTag() const;

    TQFont bodyFont( bool fixedFont = false, bool printing = false ) const;

    void setBodyFont( const TQFont& font );
    void setPrintFont( const TQFont& font );

    TQColor pgpWarnColor() const;

  protected:
    /** Recalculate PGP frame and body colors (should be called after changing
        color settings) */
    void recalculatePGPColors();

  protected:
    TQFont mBodyFont, mPrintFont, mFixedFont, mFixedPrintFont;
    TQFont mQuoteFont[3];
    TQColor mQuoteColor[3];
    bool mRecycleQuoteColors;
    bool mBackingPixmapOn;
    bool mShrinkQuotes;
    TQString mBackingPixmapStr;
    TQColor mForegroundColor, mLinkColor, mVisitedLinkColor, mBackgroundColor;
    // colors for PGP (Frame, Header, Body)
    TQColor cPgpOk1F, cPgpOk1H, cPgpOk1B,
    cPgpOk0F, cPgpOk0H, cPgpOk0B,
    cPgpWarnF, cPgpWarnH, cPgpWarnB,
    cPgpErrF, cPgpErrH, cPgpErrB,
    cPgpEncrF, cPgpEncrH, cPgpEncrB;
    // color of frame of warning preceding the source of HTML messages
    TQColor cHtmlWarning;

  private:
    int fontSize( bool fixed, bool print = false ) const;
     // returns CSS rules specific to the print media type
    TQString printCssDefinitions( bool fixed ) const;
    // returns CSS rules specific to the screen media type
    TQString screenCssDefinitions( const CSSHelper * helper, bool fixed ) const;
    // returns CSS rules common to both screen and print media types
    TQString commonCssDefinitions() const;

  private:
    const TQPaintDeviceMetrics mMetrics;

};

} // namespace KPIM

#endif // KPIM_CSSHELPER_H
