1 files changed, 80 insertions, 0 deletions
diff --git a/krita/plugins/viewplugins/histogram_docker/kis_imagerasteredcache.h b/krita/plugins/viewplugins/histogram_docker/kis_imagerasteredcache.h
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index 00000000..6335eadb
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+++ b/krita/plugins/viewplugins/histogram_docker/kis_imagerasteredcache.h
@@ -0,0 +1,80 @@
+/*
+ * This file is part of the KDE project
+ *
+ *  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 _KIS_IMAGE_RASTERED_CACHE_H_
+#define _KIS_IMAGE_RASTERED_CACHE_H_
+
+#include <qobject.h>
+#include <qvaluevector.h>
+#include <qvaluelist.h>
+#include <qtimer.h>
+
+#include <kis_paint_device.h>
+
+class KisView;
+
+class KisImageRasteredCache : public QObject {
+Q_OBJECT
+
+public:
+    class Observer {
+    public:
+        virtual Observer* createNew(int x, int y, int w, int h) = 0;
+        virtual void regionUpdated(KisPaintDeviceSP dev) = 0;
+        virtual ~Observer() {}
+    };
+
+    KisImageRasteredCache(KisView* view, Observer* o);
+    virtual ~KisImageRasteredCache();
+
+signals:
+    void cacheUpdated();
+
+private slots:
+    void imageUpdated(QRect rc);
+    void imageSizeChanged(Q_INT32 w, Q_INT32 h);
+    void timeOut();
+
+private:
+    class Element {
+    public:
+        Element(Observer* o) : observer(o), valid(true) {}
+        Observer* observer;
+        bool valid;
+    };
+    typedef QValueVector< QValueVector<Element*> > Raster;
+    typedef QValueList<Element*> Queue;
+
+    void cleanUpElements();
+
+    Observer* m_observer;
+    Raster m_raster;
+    Queue m_queue;
+    QTimer m_timer;
+    int m_timeOutMSec;
+    int m_rasterSize;
+    int m_width, m_height;
+    KisView * m_view;
+    bool m_busy;
+
+    KisPaintDeviceSP m_imageProjection;
+};
+
+#endif // _KIS_IMAGE_RASTERED_CACHE_H_