Finish rebranding of Krita as Chalk

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/koffice@1238363 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 265 insertions, 0 deletions

diff --git a/chalk/core/kis_gradient.h b/chalk/core/kis_gradient.h
new file mode 100644
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+++ b/chalk/core/kis_gradient.h
@@ -0,0 +1,265 @@
+/*
+ *  kis_gradient.h - part of Krayon
+ *
+ *  Copyright (c) 2000 Matthias Elter  <elter@kde.org>
+ *                2004 Boudewijn Rempt <boud@valdyas.org>
+ *                2004 Adrian Page <adrian@pagenet.plus.com>
+ *                2004 Sven Langkamp <longamp@reallygood.de>
+ *
+ *  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_GRADIENT_H
+#define KIS_GRADIENT_H
+
+#include <tqvaluevector.h>
+#include <tqcolor.h>
+
+#include <kio/job.h>
+
+#include "kis_resource.h"
+#include "kis_global.h"
+
+class TQImage;
+
+enum {
+    INTERP_LINEAR = 0,
+    INTERP_CURVED,
+    INTERP_SINE,
+    INTERP_SPHERE_INCREASING,
+    INTERP_SPHERE_DECREASING
+};
+
+enum {
+    COLOR_INTERP_RGB,
+    COLOR_INTERP_HSV_CCW,
+    COLOR_INTERP_HSV_CW
+};
+
+// TODO: Replace TQColor with KisColor
+class Color {
+    public:
+        Color() { m_alpha = 0; }
+        Color(const TQColor& color, double alpha) { m_color = color; m_alpha = alpha; }
+
+        const TQColor& color() const { return m_color; }
+        double alpha() const { return m_alpha; }
+
+    private:
+        TQColor m_color;
+        double m_alpha;
+};
+
+class KisGradientSegment {
+    public:
+        KisGradientSegment(int interpolationType, int colorInterpolationType, double startOffset, double middleOffset, double endOffset, const Color& startColor, const Color& endColor);
+
+        // startOffset <= t <= endOffset
+        Color colorAt(double t) const;
+
+        const Color& startColor() const;
+        const Color& endColor() const;
+
+        void setStartColor(const Color& color) { m_startColor = color; }
+        void setEndColor(const Color& color) { m_endColor = color; }
+
+        double startOffset() const;
+        double middleOffset() const;
+        double endOffset() const;
+
+        void setStartOffset(double t);
+        void setMiddleOffset(double t);
+        void setEndOffset(double t);
+
+        double length() { return m_length; }
+
+        int interpolation() const;
+        int colorInterpolation() const;
+
+        void setInterpolation(int interpolationType);
+        void setColorInterpolation(int colorInterpolationType);
+
+        bool isValid() const;
+    protected:
+
+        class ColorInterpolationStrategy {
+        public:
+            ColorInterpolationStrategy() {}
+            virtual ~ColorInterpolationStrategy() {}
+
+            virtual Color colorAt(double t, Color start, Color end) const = 0;
+            virtual int type() const = 0;
+        };
+
+        class RGBColorInterpolationStrategy : public ColorInterpolationStrategy {
+        public:
+            static RGBColorInterpolationStrategy *instance();
+
+            virtual Color colorAt(double t, Color start, Color end) const;
+            virtual int type() const { return COLOR_INTERP_RGB; }
+
+        private:
+            RGBColorInterpolationStrategy() {}
+
+            static RGBColorInterpolationStrategy *m_instance;
+        };
+
+        class HSVCWColorInterpolationStrategy : public ColorInterpolationStrategy {
+        public:
+            static HSVCWColorInterpolationStrategy *instance();
+
+            virtual Color colorAt(double t, Color start, Color end) const;
+            virtual int type() const { return COLOR_INTERP_HSV_CW; }
+        private:
+            HSVCWColorInterpolationStrategy() {}
+
+            static HSVCWColorInterpolationStrategy *m_instance;
+        };
+
+        class HSVCCWColorInterpolationStrategy : public ColorInterpolationStrategy {
+        public:
+            static HSVCCWColorInterpolationStrategy *instance();
+
+            virtual Color colorAt(double t, Color start, Color end) const;
+            virtual int type() const { return COLOR_INTERP_HSV_CCW; }
+        private:
+            HSVCCWColorInterpolationStrategy() {}
+
+            static HSVCCWColorInterpolationStrategy *m_instance;
+        };
+
+        class InterpolationStrategy {
+        public:
+            InterpolationStrategy() {}
+            virtual ~InterpolationStrategy() {}
+
+            virtual double valueAt(double t, double middle) const = 0;
+            virtual int type() const = 0;
+        };
+
+        class LinearInterpolationStrategy : public InterpolationStrategy {
+        public:
+            static LinearInterpolationStrategy *instance();
+
+            virtual double valueAt(double t, double middle) const;
+            virtual int type() const { return INTERP_LINEAR; }
+
+            // This does the actual calculation and is made
+            // static as an optimisation for the other
+            // strategies that need this for their own calculation.
+            static double calcValueAt(double t, double middle);
+
+        private:
+            LinearInterpolationStrategy() {}
+
+            static LinearInterpolationStrategy *m_instance;
+        };
+
+        class CurvedInterpolationStrategy : public InterpolationStrategy {
+        public:
+            static CurvedInterpolationStrategy *instance();
+
+            virtual double valueAt(double t, double middle) const;
+            virtual int type() const { return INTERP_CURVED; }
+        private:
+            CurvedInterpolationStrategy();
+
+            static CurvedInterpolationStrategy *m_instance;
+            double m_logHalf;
+        };
+
+        class SphereIncreasingInterpolationStrategy : public InterpolationStrategy {
+        public:
+            static SphereIncreasingInterpolationStrategy *instance();
+
+            virtual double valueAt(double t, double middle) const;
+            virtual int type() const { return INTERP_SPHERE_INCREASING; }
+        private:
+            SphereIncreasingInterpolationStrategy() {}
+
+            static SphereIncreasingInterpolationStrategy *m_instance;
+        };
+
+        class SphereDecreasingInterpolationStrategy : public InterpolationStrategy {
+        public:
+            static SphereDecreasingInterpolationStrategy *instance();
+
+            virtual double valueAt(double t, double middle) const;
+            virtual int type() const { return INTERP_SPHERE_DECREASING; }
+        private:
+            SphereDecreasingInterpolationStrategy() {}
+
+            static SphereDecreasingInterpolationStrategy *m_instance;
+        };
+
+        class SineInterpolationStrategy : public InterpolationStrategy {
+        public:
+            static SineInterpolationStrategy *instance();
+
+            virtual double valueAt(double t, double middle) const;
+            virtual int type() const { return INTERP_SINE; }
+        private:
+            SineInterpolationStrategy() {}
+
+            static SineInterpolationStrategy *m_instance;
+        };
+    private:
+        InterpolationStrategy *m_interpolator;
+        ColorInterpolationStrategy *m_colorInterpolator;
+
+        double m_startOffset;
+        double m_middleOffset;
+        double m_endOffset;
+        double m_length;
+        double m_middleT;
+
+        Color m_startColor;
+        Color m_endColor;
+};
+
+class KisGradient : public KisResource {
+    typedef KisResource super;
+    Q_OBJECT
+  TQ_OBJECT
+
+public:
+    KisGradient(const TQString& file);
+    virtual ~KisGradient();
+
+    virtual bool load();
+    virtual bool save();
+    virtual TQImage img();
+    virtual TQImage generatePreview(int width, int height) const;
+
+    void colorAt(double t, TQColor *color, TQ_UINT8 *opacity) const;
+    
+    KisGradientSegment *segmentAt(double t) const;
+
+protected:
+    inline void pushSegment( KisGradientSegment* segment ) { m_segments.push_back(segment); };
+    void setImage(const TQImage& img);
+
+    TQValueVector<KisGradientSegment *> m_segments;
+
+private:
+    bool init();
+
+private:
+    TQByteArray m_data;
+    TQImage m_img;
+};
+
+#endif // KIS_GRADIENT_H
+