1 files changed, 158 insertions, 0 deletions
diff --git a/src/pmview/colorscale.cpp b/src/pmview/colorscale.cpp
new file mode 100644
index 0000000..c90658d
--- /dev/null
+++ b/src/pmview/colorscale.cpp
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 1997 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2009 Aconex.  All Rights Reserved.
+ * 
+ * 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.
+ */
+#include "main.h"
+#include "colorscale.h"
+
+ColorStep::~ColorStep()
+{
+}
+
+ColorStep::ColorStep(SbColor col, float val)
+: _color(), 
+  _min(val)
+{
+    _color.setValue(col.getValue());
+}
+
+ColorStep::ColorStep(float r, float g, float b, float val)
+: _color(), 
+  _min(val)
+{
+    SbColor tmp(r, g, b);
+    _color.setValue(tmp.getValue());
+}
+
+ColorStep::ColorStep(uint32_t col, float val)
+: _color(), 
+  _min(val)
+{
+    float dummy = 0.0;
+    _color.setPackedValue(col, dummy);
+}
+
+ColorStep::ColorStep(const ColorStep &rhs)
+: _color(), 
+  _min(rhs._min)
+{
+    _color.setValue(rhs._color.getValue());
+}
+
+const ColorStep &
+ColorStep::operator=(const ColorStep &rhs)
+{
+    if (this != &rhs) {
+	_color.setValue(rhs._color.getValue());
+	_min = rhs._min;
+    }
+    return *this;
+}
+
+ColorScale::~ColorScale()
+{
+    int		i;
+
+    for (i = 0; i < _colors.size(); i++)
+	delete _colors.takeAt(i);
+}
+
+ColorScale::ColorScale(const SbColor &col)
+: _colors()
+{
+    add(new ColorStep(col));
+}
+
+ColorScale::ColorScale(float r, float g, float b)
+: _colors()
+{
+    add(new ColorStep(r, g, b));
+}
+
+ColorScale::ColorScale(uint32_t col)
+: _colors()
+{
+    add(new ColorStep(col));
+}
+
+ColorScale::ColorScale(const ColorScale &rhs)
+: _colors()
+{
+    int		i;
+
+    for (i = 0; i < rhs._colors.size(); i++)
+    	add(new ColorStep(rhs[i]));
+}
+
+const ColorScale &
+ColorScale::operator=(const ColorScale &rhs)
+{
+    int		i;
+
+    if (this != &rhs) {
+    	for (i = 0; i < _colors.size(); i++)
+	    delete _colors.takeAt(i);
+	for (i = 0; i < rhs._colors.size(); i++)
+	    add(new ColorStep(rhs[i]));
+    }
+    return *this;
+}
+
+int
+ColorScale::add(ColorStep *ptr)
+{
+    if (_colors.size()) {
+    	float prev = _colors.last()->min();
+	if (prev >= ptr->min()) {
+	    warningMsg(_POS_, 
+		"Color step (%f) was less than previous step (%f), skipping.",
+		ptr->min(), prev);
+	    return -1;
+	}
+    }
+    _colors.append(ptr);
+
+    return 0;
+}
+
+const ColorStep &
+ColorScale::step(float value)
+{
+    int		i = _colors.size();
+
+    while (i > 0 && _colors[i-1]->min() > value)
+    	i--;
+
+    if (i == 0)
+	return *(_colors[0]);
+    return *(_colors[i-1]);
+}
+
+QTextStream&
+operator<<(QTextStream &os, const ColorScale &rhs)
+{
+    int		i;
+
+    if (rhs._colors.size() > 0) {
+        os << '[' << rhs[0].min();
+	for (i = 1; i < rhs.numSteps(); i++)
+	    os << ", " << rhs[i].min();
+	os << ']';
+    }
+    else {
+    	os << "empty";
+    }
+
+    return os;
+}
+