Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 633 insertions, 0 deletions

diff --git a/libkdepim/csshelper.cpp b/libkdepim/csshelper.cpp
new file mode 100644
index 000000000..2e2c11379
--- /dev/null
+++ b/libkdepim/csshelper.cpp
@@ -0,0 +1,633 @@
+/*  -*- mode: C++; c-file-style: "gnu" -*-
+    csshelper.cpp
+
+    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 Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), 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
+    Qt.  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.
+*/
+
+#include "csshelper.h"
+
+#include <kconfig.h>
+#include <kglobalsettings.h>
+#include <kdebug.h>
+#include <kglobal.h>
+
+#include <qstring.h>
+#include <qapplication.h>
+
+namespace KPIM {
+
+  namespace {
+    // some QColor manipulators that hide the ugly QColor API w.r.t. HSV:
+    inline QColor darker( const QColor & c ) {
+      int h, s, v;
+      c.hsv( &h, &s, &v );
+      return QColor( h, s, v*4/5, QColor::Hsv );
+    }
+
+    inline QColor desaturate( const QColor & c ) {
+      int h, s, v;
+      c.hsv( &h, &s, &v );
+      return QColor( h, s/8, v, QColor::Hsv );
+    }
+
+    inline QColor fixValue( const QColor & c, int newV ) {
+      int h, s, v;
+      c.hsv( &h, &s, &v );
+      return QColor( h, s, newV, QColor::Hsv );
+    }
+
+    inline int getValueOf( const QColor & c ) {
+      int h, s, v;
+      c.hsv( &h, &s, &v );
+      return v;
+    }
+  }
+
+  CSSHelper::CSSHelper( const QPaintDeviceMetrics &pdm ) :
+    mShrinkQuotes( false ),
+    mMetrics( pdm )
+  {
+    // initialize with defaults - should match the corresponding application defaults
+    mForegroundColor = QApplication::palette().active().text();
+    mLinkColor = KGlobalSettings::linkColor();
+    mVisitedLinkColor = KGlobalSettings::visitedLinkColor();
+    mBackgroundColor = QApplication::palette().active().base();
+    cHtmlWarning = QColor( 0xFF, 0x40, 0x40 ); // warning frame color: light red
+
+    cPgpEncrH = QColor( 0x00, 0x80, 0xFF ); // light blue
+    cPgpOk1H  = QColor( 0x40, 0xFF, 0x40 ); // light green
+    cPgpOk0H  = QColor( 0xFF, 0xFF, 0x40 ); // light yellow
+    cPgpWarnH = QColor( 0xFF, 0xFF, 0x40 ); // light yellow
+    cPgpErrH  = Qt::red;
+
+    for ( int i = 0 ; i < 3 ; ++i )
+      mQuoteColor[i] = QColor( 0x00, 0x80 - i * 0x10, 0x00 ); // shades of green
+    mRecycleQuoteColors = false;
+
+    QFont defaultFont = KGlobalSettings::generalFont();
+    QFont defaultFixedFont = KGlobalSettings::fixedFont();
+    mBodyFont = mPrintFont = defaultFont;
+    mFixedFont = mFixedPrintFont = defaultFixedFont;
+    defaultFont.setItalic( true );
+    for ( int i = 0 ; i < 3 ; ++i )
+      mQuoteFont[i] = defaultFont;
+
+    mBackingPixmapOn = false;
+
+    recalculatePGPColors();
+  }
+
+  void CSSHelper::recalculatePGPColors() {
+    // determine the frame and body color for PGP messages from the header color
+    // if the header color equals the background color then the other colors are
+    // also set to the background color (-> old style PGP message viewing)
+    // else
+    // the brightness of the frame is set to 4/5 of the brightness of the header
+    // and in case of a light background color
+    // the saturation of the body is set to 1/8 of the saturation of the header
+    // while in case of a dark background color
+    // the value of the body is set to the value of the background color
+
+    // Check whether the user uses a light color scheme
+    const int vBG = getValueOf( mBackgroundColor );
+    const bool lightBG = vBG >= 128;
+    if ( cPgpOk1H == mBackgroundColor ) {
+      cPgpOk1F = mBackgroundColor;
+      cPgpOk1B = mBackgroundColor;
+    } else {
+      cPgpOk1F= darker( cPgpOk1H );
+      cPgpOk1B = lightBG ? desaturate( cPgpOk1H ) : fixValue( cPgpOk1H, vBG );
+    }
+    if ( cPgpOk0H == mBackgroundColor ) {
+      cPgpOk0F = mBackgroundColor;
+      cPgpOk0B = mBackgroundColor;
+    } else {
+      cPgpOk0F = darker( cPgpOk0H );
+      cPgpOk0B = lightBG ? desaturate( cPgpOk0H ) : fixValue( cPgpOk0H, vBG );
+    }
+    if ( cPgpWarnH == mBackgroundColor ) {
+      cPgpWarnF = mBackgroundColor;
+      cPgpWarnB = mBackgroundColor;
+    } else {
+      cPgpWarnF = darker( cPgpWarnH );
+      cPgpWarnB = lightBG ? desaturate( cPgpWarnH ) : fixValue( cPgpWarnH, vBG );
+    }
+    if ( cPgpErrH == mBackgroundColor ) {
+      cPgpErrF = mBackgroundColor;
+      cPgpErrB = mBackgroundColor;
+    } else {
+      cPgpErrF = darker( cPgpErrH );
+      cPgpErrB = lightBG ? desaturate( cPgpErrH ) : fixValue( cPgpErrH, vBG );
+    }
+    if ( cPgpEncrH == mBackgroundColor ) {
+      cPgpEncrF = mBackgroundColor;
+      cPgpEncrB = mBackgroundColor;
+    } else {
+      cPgpEncrF = darker( cPgpEncrH );
+      cPgpEncrB = lightBG ? desaturate( cPgpEncrH ) : fixValue( cPgpEncrH, vBG );
+    }
+  }
+
+  QString CSSHelper::cssDefinitions( bool fixed ) const {
+    return
+      commonCssDefinitions()
+      +
+      "@media screen {\n\n"
+      +
+      screenCssDefinitions( this, fixed )
+      +
+      "}\n"
+      "@media print {\n\n"
+      +
+      printCssDefinitions( fixed )
+      +
+      "}\n";
+  }
+
+  QString CSSHelper::htmlHead( bool /*fixed*/ ) const {
+    return
+      "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\n"
+      "<html><head><title></title></head>\n"
+      "<body>\n";
+  }
+
+  QString CSSHelper::quoteFontTag( int level ) const {
+    if ( level < 0 )
+      level = 0;
+    static const int numQuoteLevels = sizeof mQuoteFont / sizeof *mQuoteFont;
+    const int effectiveLevel = mRecycleQuoteColors
+      ? level % numQuoteLevels + 1
+      : kMin( level + 1, numQuoteLevels ) ;
+    if ( level >= numQuoteLevels )
+      return QString( "<div class=\"deepquotelevel%1\">" ).arg( effectiveLevel );
+    else
+      return QString( "<div class=\"quotelevel%1\">" ).arg( effectiveLevel );
+  }
+
+  QString CSSHelper::nonQuotedFontTag() const {
+    return "<div class=\"noquote\">";
+  }
+
+  QFont CSSHelper::bodyFont( bool fixed, bool print ) const {
+      return fixed ? ( print ? mFixedPrintFont : mFixedFont )
+        : ( print ? mPrintFont : mBodyFont );
+  }
+
+  int CSSHelper::fontSize( bool fixed, bool print ) const {
+    return bodyFont( fixed, print ).pointSize();
+  }
+
+
+  namespace {
+    int pointsToPixel( const QPaintDeviceMetrics & metrics, int pointSize ) {
+      return ( pointSize * metrics.logicalDpiY() + 36 ) / 72 ;
+    }
+  }
+
+  static const char * const quoteFontSizes[] = { "85", "80", "75" };
+
+  QString CSSHelper::printCssDefinitions( bool fixed ) const {
+    const QString headerFont = QString( "  font-family: \"%1\" ! important;\n"
+                                        "  font-size: %2pt ! important;\n" )
+                           .arg( mPrintFont.family() )
+                           .arg( mPrintFont.pointSize() );
+    const QColorGroup & cg = QApplication::palette().active();
+
+    const QFont printFont = bodyFont( fixed, true /* print */ );
+    QString quoteCSS;
+    if ( printFont.italic() )
+      quoteCSS += "  font-style: italic ! important;\n";
+    if ( printFont.bold() )
+      quoteCSS += "  font-weight: bold ! important;\n";
+    if ( !quoteCSS.isEmpty() )
+      quoteCSS = "div.noquote {\n" + quoteCSS + "}\n\n";
+
+    return
+      QString( "body {\n"
+               "  font-family: \"%1\" ! important;\n"
+               "  font-size: %2pt ! important;\n"
+               "  color: #000000 ! important;\n"
+               "  background-color: #ffffff ! important\n"
+               "}\n\n" )
+      .arg( printFont.family(),
+            QString::number( printFont.pointSize() ) )
+      +
+      QString( "tr.textAtmH,\n"
+               "tr.rfc822H,\n"
+               "tr.encrH,\n"
+               "tr.signOkKeyOkH,\n"
+               "tr.signOkKeyBadH,\n"
+               "tr.signWarnH,\n"
+               "tr.signErrH,\n"
+               "div.header {\n"
+               "%1"
+               "}\n\n"
+
+               "div.fancy.header > div {\n"
+               "  background-color: %2 ! important;\n"
+               "  color: %3 ! important;\n"
+               "  padding: 4px ! important;\n"
+               "  border: solid %3 1px ! important;\n"
+               "}\n\n"
+
+               "div.fancy.header > div a[href] { color: %3 ! important; }\n\n"
+
+               "div.fancy.header > table.outer{\n"
+               "  background-color: %2 ! important;\n"
+               "  color: %3 ! important;\n"
+               "  border-bottom: solid %3 1px ! important;\n"
+               "  border-left: solid %3 1px ! important;\n"
+               "  border-right: solid %3 1px ! important;\n"
+               "}\n\n"
+
+               "div.spamheader {\n"
+               "  display:none ! important;\n"
+               "}\n\n"
+
+               "div.htmlWarn {\n"
+               "  border: 2px solid #ffffff ! important;\n"
+               "}\n\n"
+
+               "div.senderpic{\n"
+               "  font-size:0.8em ! important;\n"
+               "  border:1px solid black ! important;\n"
+               "  background-color:%2 ! important;\n"
+               "}\n\n"
+
+               "div.senderstatus{\n"
+               "  text-align:center ! important;\n"
+               "}\n\n"
+
+               "div.noprint {\n"
+               "  display:none ! important;\n"
+               "}\n\n"
+            )
+      .arg( headerFont,
+            cg.background().name(),
+            cg.foreground().name() )
+      + quoteCSS;
+  }
+
+  QString CSSHelper::screenCssDefinitions( const CSSHelper * helper, bool fixed ) const {
+    const QString fgColor = mForegroundColor.name();
+    const QString bgColor = mBackgroundColor.name();
+    const QString linkColor = mLinkColor.name();
+    const QString headerFont = QString("  font-family: \"%1\" ! important;\n"
+                                       "  font-size: %2px ! important;\n")
+      .arg( mBodyFont.family() )
+      .arg( pointsToPixel( helper->mMetrics, mBodyFont.pointSize() ) );
+    const QString background = ( mBackingPixmapOn
+                         ? QString( "  background-image:url(file://%1) ! important;\n" )
+                           .arg( mBackingPixmapStr )
+                         : QString( "  background-color: %1 ! important;\n" )
+                           .arg( bgColor ) );
+    const QString bodyFontSize = QString::number( pointsToPixel( helper->mMetrics, fontSize( fixed ) ) ) + "px" ;
+    const QColorGroup & cg = QApplication::palette().active();
+
+    QString quoteCSS;
+    if ( bodyFont( fixed ).italic() )
+      quoteCSS += "  font-style: italic ! important;\n";
+    if ( bodyFont( fixed ).bold() )
+      quoteCSS += "  font-weight: bold ! important;\n";
+    if ( !quoteCSS.isEmpty() )
+      quoteCSS = "div.noquote {\n" + quoteCSS + "}\n\n";
+
+    // CSS definitions for quote levels 1-3
+    for ( int i = 0 ; i < 3 ; ++i ) {
+      quoteCSS += QString( "div.quotelevel%1 {\n"
+                           "  color: %2 ! important;\n" )
+        .arg( QString::number(i+1), mQuoteColor[i].name() );
+      if ( mQuoteFont[i].italic() )
+        quoteCSS += "  font-style: italic ! important;\n";
+      if ( mQuoteFont[i].bold() )
+        quoteCSS += "  font-weight: bold ! important;\n";
+      if ( mShrinkQuotes )
+        quoteCSS += "  font-size: " + QString::fromLatin1( quoteFontSizes[i] )
+          + "% ! important;\n";
+      quoteCSS += "}\n\n";
+    }
+
+    // CSS definitions for quote levels 4+
+    for ( int i = 0 ; i < 3 ; ++i ) {
+      quoteCSS += QString( "div.deepquotelevel%1 {\n"
+                           "  color: %2 ! important;\n" )
+        .arg( QString::number(i+1), mQuoteColor[i].name() );
+      if ( mQuoteFont[i].italic() )
+        quoteCSS += "  font-style: italic ! important;\n";
+      if ( mQuoteFont[i].bold() )
+        quoteCSS += "  font-weight: bold ! important;\n";
+      if ( mShrinkQuotes )
+        quoteCSS += "  font-size: 70% ! important;\n";
+      quoteCSS += "}\n\n";
+    }
+
+    return
+      QString( "body {\n"
+               "  font-family: \"%1\" ! important;\n"
+               "  font-size: %2 ! important;\n"
+               "  color: %3 ! important;\n"
+               "%4"
+               "}\n\n" )
+      .arg( bodyFont( fixed ).family(),
+            bodyFontSize,
+            fgColor,
+            background )
+      +
+      QString( "a {\n"
+               "  color: %1 ! important;\n"
+               "  text-decoration: none ! important;\n"
+               "}\n\n"
+
+               "a.white {\n"
+               "  color: white ! important;\n"
+               "}\n\n"
+
+               "table.textAtm { background-color: %2 ! important; }\n\n"
+
+               "tr.textAtmH {\n"
+               "  background-color: %3 ! important;\n"
+               "%4"
+               "}\n\n"
+
+               "tr.textAtmB {\n"
+               "  background-color: %3 ! important;\n"
+               "}\n\n"
+
+               "table.rfc822 {\n"
+               "  background-color: %3 ! important;\n"
+               "}\n\n"
+
+               "tr.rfc822H {\n"
+               "%4"
+               "}\n\n" )
+      .arg( linkColor, fgColor, bgColor, headerFont )
+      +
+      QString( "table.encr {\n"
+               "  background-color: %1 ! important;\n"
+               "}\n\n"
+
+               "tr.encrH {\n"
+               "  background-color: %2 ! important;\n"
+               "%3"
+               "}\n\n"
+
+               "tr.encrB { background-color: %4 ! important; }\n\n" )
+      .arg( cPgpEncrF.name(),
+            cPgpEncrH.name(),
+            headerFont,
+            cPgpEncrB.name() )
+      +
+      QString( "table.signOkKeyOk {\n"
+               "  background-color: %1 ! important;\n"
+               "}\n\n"
+
+               "tr.signOkKeyOkH {\n"
+               "  background-color: %2 ! important;\n"
+               "%3"
+               "}\n\n"
+
+               "tr.signOkKeyOkB { background-color: %4 ! important; }\n\n" )
+      .arg( cPgpOk1F.name(),
+            cPgpOk1H.name(),
+            headerFont,
+            cPgpOk1B.name() )
+      +
+      QString( "table.signOkKeyBad {\n"
+               "  background-color: %1 ! important;\n"
+               "}\n\n"
+
+               "tr.signOkKeyBadH {\n"
+               "  background-color: %2 ! important;\n"
+               "%3"
+               "}\n\n"
+
+               "tr.signOkKeyBadB { background-color: %4 ! important; }\n\n" )
+      .arg( cPgpOk0F.name(),
+            cPgpOk0H.name(),
+            headerFont,
+            cPgpOk0B.name() )
+      +
+      QString( "table.signWarn {\n"
+               "  background-color: %1 ! important;\n"
+               "}\n\n"
+
+               "tr.signWarnH {\n"
+               "  background-color: %2 ! important;\n"
+               "%3"
+               "}\n\n"
+
+               "tr.signWarnB { background-color: %4 ! important; }\n\n" )
+      .arg( cPgpWarnF.name(),
+            cPgpWarnH.name(),
+            headerFont,
+            cPgpWarnB.name() )
+      +
+      QString( "table.signErr {\n"
+               "  background-color: %1 ! important;\n"
+               "}\n\n"
+
+               "tr.signErrH {\n"
+               "  background-color: %2 ! important;\n"
+               "%3"
+               "}\n\n"
+
+               "tr.signErrB { background-color: %4 ! important; }\n\n" )
+      .arg( cPgpErrF.name(),
+            cPgpErrH.name(),
+            headerFont,
+            cPgpErrB.name() )
+      +
+      QString( "div.htmlWarn {\n"
+               "  border: 2px solid %1 ! important;\n"
+               "}\n\n" )
+      .arg( cHtmlWarning.name() )
+      +
+      QString( "div.header {\n"
+               "%1"
+               "}\n\n"
+
+               "div.fancy.header > div {\n"
+               "  background-color: %2 ! important;\n"
+               "  color: %3 ! important;\n"
+               "  border: solid %4 1px ! important;\n"
+               "}\n\n"
+
+               "div.fancy.header > div a[href] { color: %3 ! important; }\n\n"
+
+               "div.fancy.header > div a[href]:hover { text-decoration: underline ! important; }\n\n"
+
+               "div.fancy.header > div.spamheader {\n"
+               "  background-color: #cdcdcd ! important;\n"
+               "  border-top: 0px ! important;\n"
+               "  padding: 3px ! important;\n"
+               "  color: black ! important;\n"
+               "  font-weight: bold ! important;\n"
+               "  font-size: smaller ! important;\n"
+               "}\n\n"
+
+               "div.fancy.header > table.outer {\n"
+               "  background-color: %5 ! important;\n"
+               "  color: %4 ! important;\n"
+               "  border-bottom: solid %4 1px ! important;\n"
+               "  border-left: solid %4 1px ! important;\n"
+               "  border-right: solid %4 1px ! important;\n"
+               "}\n\n"
+
+               "div.senderpic{\n"
+               "  padding: 0px ! important;\n"
+               "  font-size:0.8em ! important;\n"
+               "  border:1px solid %6 ! important;\n"
+               // FIXME: InfoBackground crashes KHTML
+               //"  background-color:InfoBackground ! important;\n"
+               "  background-color:%5 ! important;\n"
+               "}\n\n"
+
+               "div.senderstatus{\n"
+               "  text-align:center ! important;\n"
+               "}\n\n"
+               )
+
+      .arg( headerFont )
+      .arg( cg.highlight().name(),
+            cg.highlightedText().name(),
+            cg.foreground().name(),
+            cg.background().name() )
+      .arg( cg.mid().name() )
+      + quoteCSS;
+  }
+
+  QString CSSHelper::commonCssDefinitions() const {
+    return
+      "div.header {\n"
+      "  margin-bottom: 10pt ! important;\n"
+      "}\n\n"
+
+      "table.textAtm {\n"
+      "  margin-top: 10pt ! important;\n"
+      "  margin-bottom: 10pt ! important;\n"
+      "}\n\n"
+
+      "tr.textAtmH,\n"
+      "tr.textAtmB,\n"
+      "tr.rfc822B {\n"
+      "  font-weight: normal ! important;\n"
+      "}\n\n"
+
+      "tr.rfc822H,\n"
+      "tr.encrH,\n"
+      "tr.signOkKeyOkH,\n"
+      "tr.signOkKeyBadH,\n"
+      "tr.signWarnH,\n"
+      "tr.signErrH {\n"
+      "  font-weight: bold ! important;\n"
+      "}\n\n"
+
+      "tr.textAtmH td,\n"
+      "tr.textAtmB td {\n"
+      "  padding: 3px ! important;\n"
+      "}\n\n"
+
+      "table.rfc822 {\n"
+      "  width: 100% ! important;\n"
+      "  border: solid 1px black ! important;\n"
+      "  margin-top: 10pt ! important;\n"
+      "  margin-bottom: 10pt ! important;\n"
+      "}\n\n"
+
+      "table.textAtm,\n"
+      "table.encr,\n"
+      "table.signWarn,\n"
+      "table.signErr,\n"
+      "table.signOkKeyBad,\n"
+      "table.signOkKeyOk,\n"
+      "div.fancy.header table {\n"
+      "  width: 100% ! important;\n"
+      "  border-width: 0px ! important;\n"
+      "}\n\n"
+
+      "div.htmlWarn {\n"
+      "  margin: 0px 5% ! important;\n"
+      "  padding: 10px ! important;\n"
+      "  text-align: left ! important;\n"
+      "}\n\n"
+
+      "div.fancy.header > div {\n"
+      "  font-weight: bold ! important;\n"
+      "  padding: 4px ! important;\n"
+      "}\n\n"
+
+      "div.fancy.header table {\n"
+      "  padding: 2px ! important;\n" // ### khtml bug: this is ignored
+      "  text-align: left ! important\n"
+      "}\n\n"
+
+      "div.fancy.header table th {\n"
+      "  padding: 0px ! important;\n"
+      "  white-space: nowrap ! important;\n"
+      "  border-spacing: 0px ! important;\n"
+      "  text-align: left ! important;\n"
+      "  vertical-align: top ! important;\n"
+      "}\n\n"
+
+      "div.fancy.header table td {\n"
+      "  padding: 0px ! important;\n"
+      "  border-spacing: 0px ! important;\n"
+      "  text-align: left ! important;\n"
+      "  vertical-align: top ! important;\n"
+      "  width: 100% ! important;\n"
+      "}\n\n"
+
+      "span.pimsmileytext {\n"
+      "  position: absolute;\n"
+      "  top: 0px;\n"
+      "  left: 0px;\n"
+      "  visibility: hidden;\n"
+      "}\n\n"
+
+      "img.pimsmileyimg {\n"
+      "}\n\n"
+
+      "div.quotelevelmark {\n"
+      "  position: absolute;\n"
+      "  margin-left:-10px;\n"
+      "}\n\n"
+      ;
+  }
+
+
+  void CSSHelper::setBodyFont( const QFont& font )
+  {
+    mBodyFont = font;
+  }
+
+  void CSSHelper::setPrintFont( const QFont& font )
+  {
+    mPrintFont = font;
+  }
+
+} // namespace KPIM