1 files changed, 37 insertions, 0 deletions
diff --git a/chalk/plugins/viewplugins/histogram_docker/kis_cachedhistogram.cpp b/chalk/plugins/viewplugins/histogram_docker/kis_cachedhistogram.cpp
new file mode 100644
index 000000000..1ad197f9d
--- /dev/null
+++ b/chalk/plugins/viewplugins/histogram_docker/kis_cachedhistogram.cpp
@@ -0,0 +1,37 @@
+/*
+ * This file is part of Chalk
+ *
+ * Copyright (c) 2005 Bart Coppens <kde@bartcoppens.be>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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.
+ */
+
+#include <kis_paint_device.h>
+#include <kis_iterators_pixel.h>
+
+#include "kis_cachedhistogram.h"
+
+void KisCachedHistogramObserver::regionUpdated(KisPaintDeviceSP dev) {
+    m_producer->clear();
+    KisRectIteratorPixel srcIt = dev->createRectIterator(m_x, m_y, m_w, m_h, false);
+    int i;
+    while ( !srcIt.isDone() ) {
+        i = srcIt.nConseqPixels();
+        m_producer->addRegionToBin(srcIt.rawData(), srcIt.selectionMask(), i, dev->colorSpace());
+        srcIt += i;
+        if (i == 0)
+            ++srcIt;
+    }
+}