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

1 files changed, 122 insertions, 0 deletions

diff --git a/kviewshell/renderedDocumentPagePixmap.cpp b/kviewshell/renderedDocumentPagePixmap.cpp
new file mode 100644
index 00000000..aaa06878
--- /dev/null
+++ b/kviewshell/renderedDocumentPagePixmap.cpp
@@ -0,0 +1,122 @@
+
+/* This file is part of the KDE project
+   Copyright (C) 2005 Wilfried Huss <[email protected]>
+
+   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.
+*/
+
+#include <config.h>
+
+#include <kimageeffect.h>
+#include <kdebug.h>
+#include <qimage.h>
+
+#include "kvsprefs.h"
+#include "renderedDocumentPagePixmap.h"
+
+RenderedDocumentPagePixmap::RenderedDocumentPagePixmap()
+  : _accessiblePixmap(0), dirty(true)
+{
+}
+
+RenderedDocumentPagePixmap::~RenderedDocumentPagePixmap()
+{
+  delete _accessiblePixmap;
+}
+
+
+QPainter* RenderedDocumentPagePixmap::getPainter()
+{
+  if (paintingActive()) {
+    kdError(1223) << "RenderedDocumentPagePixmap::getPainter() called when painting was active" << endl;
+    return 0;
+  } else
+    return new QPainter(this);
+}
+
+
+void RenderedDocumentPagePixmap::resize(int width, int height)
+{
+  QPixmap::resize(width, height);
+  if(_accessiblePixmap)
+    _accessiblePixmap->resize(width, height);
+
+  dirty = true;
+}
+
+void RenderedDocumentPagePixmap::resize(const QSize& size)
+{
+  resize(size.width(), size.height());
+}
+
+QPixmap RenderedDocumentPagePixmap::accessiblePixmap()
+{
+  if (!_accessiblePixmap || dirty)
+  {
+    QImage backImage = this->convertToImage();
+    switch (KVSPrefs::renderMode())
+    {
+      case KVSPrefs::EnumRenderMode::Inverted:
+        // Invert image pixels using QImage internal function
+        backImage.invertPixels(false);
+        break;
+      case KVSPrefs::EnumRenderMode::Recolor:
+        // Recolor image using KImageEffect::flatten with dither:0
+        KImageEffect::flatten(backImage, KVSPrefs::recolorForeground(), KVSPrefs::recolorBackground());
+        break;
+      case KVSPrefs::EnumRenderMode::BlackWhite:
+        // Manual Gray and Contrast
+        unsigned int* data = (unsigned int*)backImage.bits();
+        int val;
+        int pixels = backImage.width() * backImage.height();
+        int con = KVSPrefs::bWContrast();
+        int thr = 255 - KVSPrefs::bWThreshold();
+
+        for( int i = 0; i < pixels; ++i )
+        {
+          val = qGray(data[i]);
+          if (val > thr)
+            val = 128 + (127 * (val - thr)) / (255 - thr);
+          else if ( val < thr )
+            val = (128 * val) / thr;
+          if (con > 2)
+          {
+            val = con * (val - thr) / 2 + thr;
+            if (val > 255)
+              val = 255;
+            else if (val < 0)
+              val = 0;
+          }
+          data[i] = qRgba(val, val, val, 255);
+        }
+        break;
+    }
+    if (!_accessiblePixmap)
+      _accessiblePixmap = new QPixmap(width(), height());
+
+    _accessiblePixmap->convertFromImage(backImage);
+    dirty = false;
+  }
+
+  return *_accessiblePixmap;
+}
+
+unsigned int RenderedDocumentPagePixmap::memory()
+{
+  return size().height() * size().width() * depth() / 8;
+}
+
+#include "renderedDocumentPagePixmap.moc"