1 files changed, 103 insertions, 0 deletions
diff --git a/krita/ui/kis_histogram_view.h b/krita/ui/kis_histogram_view.h
new file mode 100644
index 00000000..b44ee79d
--- /dev/null
+++ b/krita/ui/kis_histogram_view.h
@@ -0,0 +1,103 @@
+/*
+ *  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_HISTOGRAM_VIEW_
+#define _KIS_HISTOGRAM_VIEW_
+
+#include <qlabel.h>
+#include <qpixmap.h>
+#include <qvaluevector.h>
+#include <qstringlist.h>
+
+#include "kis_types.h"
+#include "kis_histogram_producer.h"
+#include "kis_histogram.h"
+
+class KisChannelInfo;
+
+/**
+ * This class displays a histogram. It has a list of channels it can select. The easy
+ * way is to display channelStrings() to the user, and then use a setActiveChannel
+ * with the integer the same as the one the selected string in that stringlist has.
+ * If the selected one is a producer, the histogram will automatically display all its
+ * channels, and color them if that is possible.
+ *
+ * You can also set the channels manually, just don't forget that the displayed channels
+ * all need to belong to the same producer! If you set them manually, don't forget to set
+ * the (non)usage of color as well.
+ *
+ * You can either set this to use a specific layer, or use a specific histogram. With the latter,
+ * some functionality will disappear, like listProducers(). Setting a histogram will discard
+ * info on the layer, and setting a layer will discard info on the histogram.
+ **/
+class KisHistogramView : public QLabel {
+    Q_OBJECT
+public:
+    KisHistogramView(QWidget *parent = 0, const char *name = 0, WFlags f = 0);
+    virtual ~KisHistogramView();
+
+    void setPaintDevice(KisPaintDeviceSP dev);
+    void setHistogram(KisHistogramSP histogram);
+    void setView(double from, double size);
+    KisHistogramProducerSP currentProducer();
+    QStringList channelStrings();
+    /** Lists all producers currently available */
+    KisIDList listProducers();
+    /** Sets the currently displayed channels to channels of the producer with producerID as ID*/
+    void setCurrentChannels(const KisID& producerID, QValueVector<KisChannelInfo *> channels);
+    /** Be careful, producer will be modified */
+    void setCurrentChannels(KisHistogramProducerSP producer, QValueVector<KisChannelInfo *> channels);
+    bool hasColor();
+    void setColor(bool set);
+
+public slots:
+    void setActiveChannel(int channel);
+    void setHistogramType(enumHistogramType type);
+    void updateHistogram();
+
+signals:
+    void rightClicked(const QPoint& pos);
+
+protected:
+    virtual void mousePressEvent(QMouseEvent * e);
+
+private:
+    void setChannels();
+    void addProducerChannels(KisHistogramProducerSP producer);
+
+    typedef struct {
+        bool isProducer;
+        KisHistogramProducerSP producer;
+        KisChannelInfo * channel;
+    } ComboboxInfo;
+
+    QValueVector<ComboboxInfo> m_comboInfo;
+    QPixmap m_pix;
+    KisHistogramSP m_histogram;
+    KisColorSpace* m_cs;
+    KisHistogramProducerSP m_currentProducer;
+    QValueVector<KisChannelInfo *> m_channels;
+    // Maps the channels in m_channels to a real channel offset in the producer->channels()
+    QValueVector<Q_INT32> m_channelToOffset;
+    QStringList m_channelStrings;
+    bool m_color;
+    double m_from;
+    double m_width;
+};
+
+#endif // _KIS_HISTOGRAM_VIEW_