1 files changed, 53 insertions, 0 deletions
diff --git a/krita/plugins/viewplugins/histogram_docker/kis_cachedhistogram.h b/krita/plugins/viewplugins/histogram_docker/kis_cachedhistogram.h
new file mode 100644
index 00000000..dfe7a05e
--- /dev/null
+++ b/krita/plugins/viewplugins/histogram_docker/kis_cachedhistogram.h
@@ -0,0 +1,53 @@
+/*
+ * This file is part of Krita
+ *
+ * Copyright (c) 2005 Bart Coppens <[email protected]>
+ *
+ *  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.
+ */
+
+#ifndef _CACHED_HISTOGRAM_H_
+#define _CACHED_HISTOGRAM_H_
+
+#include <qvaluevector.h>
+#include <kis_histogram_producer.h>
+
+#include "kis_imagerasteredcache.h"
+
+class KisCachedHistogramObserver : public KisImageRasteredCache::Observer {
+public:
+    typedef QValueVector<KisHistogramProducer*> Producers;
+    KisCachedHistogramObserver(Producers* p, KisHistogramProducerFactory* f,
+                               int x, int y, int w, int h, bool add = true)
+        : m_producers(p), m_factory(f), m_x(x), m_y(y), m_w(w), m_h(h)
+    {
+        m_producer = m_factory->generate();
+        if (add)
+            m_producers->append(m_producer);
+    }
+    virtual ~KisCachedHistogramObserver() {}
+
+    virtual Observer* createNew(int x, int y, int w, int h)
+        { return new KisCachedHistogramObserver(m_producers, m_factory, x, y, w, h); }
+        
+    virtual void regionUpdated(KisPaintDeviceSP dev);
+private:
+    Producers* m_producers;
+    KisHistogramProducerFactory* m_factory;
+    KisHistogramProducerSP m_producer;
+    int m_x, m_y, m_w, m_h;
+};
+
+#endif // _CACHED_HISTOGRAM_H_