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/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 255 insertions, 0 deletions

diff --git a/kdesktop/kfileividesktop.cpp b/kdesktop/kfileividesktop.cpp
new file mode 100644
index 000000000..28bf51105
--- /dev/null
+++ b/kdesktop/kfileividesktop.cpp
@@ -0,0 +1,255 @@
+/* This file is proposed to be part of the KDE base.
+ * Copyright (C) 2003 Laur Ivan <laurivan@eircom.net>
+ *
+ * Many thanks to:
+ *  - Bernardo Hung <deciare@gta.igs.net> for the enhanced shadow
+ *  algorithm (currently used)
+ *  - Tim Jansen <tim@tjansen.de> for the API updates and fixes.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+
+#include <qcolor.h>
+#include <qpalette.h>
+#include <qstring.h>
+#include <qpainter.h>
+#include <qstyle.h>
+#include <kwordwrap.h>
+#include <kiconview.h>
+#include <kdebug.h>
+
+#include <kshadowengine.h>
+#include "kdesktopshadowsettings.h"
+#include "kfileividesktop.h"
+
+//#define DEBUG
+
+/* Changelog:
+ */
+
+KFileIVIDesktop::KFileIVIDesktop(KonqIconViewWidget *iconview, KFileItem* fileitem,
+				 int size, KShadowEngine *shadow) :
+  KFileIVI(iconview, fileitem, size),
+  m_selectedImage(0L),
+  m_normalImage(0L),
+  _selectedUID(0),
+  _normalUID(0)
+{
+  m_shadow = shadow;
+  oldText = "";
+
+  calcRect( text() ); // recalculate rect including shadow
+}
+
+KFileIVIDesktop::~KFileIVIDesktop()
+{
+  delete m_selectedImage;
+  delete m_normalImage;
+}
+
+void KFileIVIDesktop::calcRect( const QString& _text )
+{
+    KIconViewItem::calcRect( _text );
+
+    if ( !iconView() || !m_shadow ||
+         !wordWrap() || !( static_cast<KDesktopShadowSettings *>
+             ( m_shadow->shadowSettings() ) )->isEnabled() )
+        return;
+
+    int spread = shadowThickness();
+    QRect itemTextRect = textRect();
+    QRect itemRect = rect();
+
+    itemTextRect.setBottom( itemTextRect.bottom() + spread );
+    itemTextRect.setRight( itemTextRect.right() + spread );
+    itemRect.setBottom( itemRect.bottom() + spread );
+    itemRect.setRight( itemRect.right() + spread );
+
+    setTextRect( itemTextRect );
+    setItemRect( itemRect );
+}
+
+void KFileIVIDesktop::paintItem( QPainter *p, const QColorGroup &cg)
+{
+  QColorGroup colors = updateColors(cg);
+
+  QIconView* view = iconView();
+  Q_ASSERT( view );
+
+  if ( !view )
+    return;
+
+  if ( !wordWrap() )
+    return;
+
+  p->save();
+
+  // draw the pixmap as in KIconViewItem::paintItem(...)
+  paintPixmap(p, colors);
+
+  //
+  // Paint the text as shadowed if the shadow is available
+  //
+  if (m_shadow != 0L && (static_cast<KDesktopShadowSettings *> (m_shadow->shadowSettings()))->isEnabled())
+    drawShadowedText(p, colors);
+  else {
+    paintFontUpdate(p);
+    paintText(p, colors);
+  }
+
+  p->restore();
+
+  paintOverlay(p);
+}
+
+bool KFileIVIDesktop::shouldUpdateShadow(bool selected)
+{
+  unsigned long uid = (static_cast<KDesktopShadowSettings *> (m_shadow->shadowSettings()))->UID();
+  QString wrapped = wordWrap()->wrappedString();
+
+  if (wrapped != oldText){
+    oldText = wrapped;
+    _selectedUID = _normalUID = 0;
+  }
+
+  if (selected == true)
+    return (uid != _selectedUID);
+  else
+    return (uid != _normalUID);
+
+  return false;
+}
+
+void KFileIVIDesktop::paintFocus( QPainter *p, const QColorGroup &cg )
+{
+    if ( !iconView() )
+        return;
+
+    if ( !m_shadow || !wordWrap() ||
+         !( static_cast<KDesktopShadowSettings *>
+             ( m_shadow->shadowSettings() ) )->isEnabled() ) {
+        QIconViewItem::paintFocus( p, cg );
+        return;
+    }
+
+    int spread = shadowThickness();
+
+    iconView()->style().drawPrimitive( QStyle::PE_FocusRect, p,
+        QRect( textRect( false ).x(), textRect( false ).y(),
+               textRect( false ).width() - spread,
+               textRect( false ).height() - spread + 1 ),
+        cg,
+        isSelected() ? QStyle::Style_FocusAtBorder : QStyle::Style_Default,
+        QStyleOption( isSelected() ? cg.highlight() : cg.base() ) );
+
+    if ( this != iconView()->currentItem() ) {
+        iconView()->style().drawPrimitive( QStyle::PE_FocusRect, p,
+            QRect( pixmapRect( false ).x(), pixmapRect( false ).y(),
+            pixmapRect( false ).width(), pixmapRect( false ).height() ),
+            cg, QStyle::Style_Default, QStyleOption( cg.base() ) );
+    }
+}
+
+
+void KFileIVIDesktop::drawShadowedText( QPainter *p, const QColorGroup &cg )
+{
+  int textX = textRect( FALSE ).x() + 2;
+  int textY = textRect( FALSE ).y();
+  int align = ((KIconView *) iconView())->itemTextPos() == QIconView::Bottom
+    ? AlignHCenter : AlignAuto;
+  bool rebuild = shouldUpdateShadow(isSelected());
+
+  KDesktopShadowSettings *settings = (KDesktopShadowSettings *) (m_shadow->shadowSettings());
+
+  unsigned long uid = settings->UID();
+
+  p->setFont(iconView()->font());
+  paintFontUpdate(p);
+  QColor shadow;
+  QColor text;
+  int spread = shadowThickness();
+
+  if ( isSelected() && settings->selectionType() != KShadowSettings::InverseVideoOnSelection ) {
+    // select using a filled rect
+    text = cg.highlightedText();
+    QRect rect = textRect( false );
+    rect.setRight( rect.right() - spread );
+    rect.setBottom( rect.bottom() - spread + 1 );
+    p->fillRect( rect, cg.highlight() );
+  }
+  else {
+    // use shadow
+    if ( isSelected() ) {
+      // inverse text and shadow colors
+      shadow = settings->textColor();
+      text = settings->bgColor();
+      if ( rebuild ) {
+        setSelectedImage( buildShadow( p, align, shadow ) );
+        _selectedUID = uid;
+      }
+    }
+    else {
+      text = settings->textColor();
+      shadow = ( settings->bgColor().isValid() ) ? settings->bgColor() :
+               ( qGray( text.rgb() ) > 127 ) ? black : white;
+      if (rebuild) {
+        setNormalImage(buildShadow(p, align, shadow));
+        _normalUID = uid;
+      }
+    }
+
+    // draw the shadow
+    int shadowX = textX - spread + settings->offsetX();
+    int shadowY = textY - spread + settings->offsetY();
+
+    p->drawImage(shadowX, shadowY,
+      (isSelected()) ? *selectedImage() : *normalImage(),
+      0, 0, -1, -1, DITHER_FLAGS);
+  }
+
+  // draw the text
+  p->setPen(text);
+  wordWrap()->drawText( p, textX, textY, align | KWordWrap::Truncate );
+}
+
+
+QImage *KFileIVIDesktop::buildShadow( QPainter *p, const int align,
+                                      QColor &shadowColor )
+{
+  QPainter pixPainter;
+  int spread = shadowThickness();
+
+  QPixmap textPixmap(textRect( FALSE ).width() + spread * 2 + 2,
+    textRect( FALSE ).height() + spread * 2 + 2);
+
+  textPixmap.fill(QColor(0,0,0));
+  textPixmap.setMask( textPixmap.createHeuristicMask(TRUE) );
+
+  pixPainter.begin(&textPixmap);
+  pixPainter.setPen(white);    // get the pen from the root painter
+  pixPainter.setFont(p->font()); // get the font from the root painter
+  wordWrap()->drawText( &pixPainter, spread, spread, align | KWordWrap::Truncate );
+  pixPainter.end();
+
+  return new QImage(m_shadow->makeShadow(textPixmap, shadowColor));
+}
+
+int KFileIVIDesktop::shadowThickness() const
+{
+  return ( ( m_shadow->shadowSettings()->thickness() + 1 ) >> 1 ) + 1;
+}
+