SPColorSelector c++-sification: added SelectedColor class

(bzr r13341.6.26)

2 files changed, 147 insertions, 0 deletions

diff --git a/src/ui/selected-color.cpp b/src/ui/selected-color.cpp
new file mode 100644
index 000000000..246c51ebd
--- /dev/null
+++ b/src/ui/selected-color.cpp
@@ -0,0 +1,92 @@
+/** @file
+ * Color selected in color selector widget.
+ * This file was created during the refactoring of SPColorSelector
+ *//*
+ * Authors:
+ *	 bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Authors
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+#include <cmath>
+#include <glib.h>
+
+#include "selected-color.h"
+
+double SelectedColor::_epsilon = 1e-4;
+
+SelectedColor::SelectedColor()
+	: _color(0)
+    , _alpha(1.0)
+    , _virgin(true)
+{
+
+}
+
+SelectedColor::~SelectedColor() {
+
+}
+
+void SelectedColor::set_color(const SPColor& color)
+{
+    set_color_alpha( color, _alpha );
+}
+
+SPColor SelectedColor::get_color() const
+{
+    return _color;
+}
+
+void SelectedColor::set_alpha(gfloat alpha)
+{
+    g_return_if_fail( ( 0.0 <= alpha ) && ( alpha <= 1.0 ) );
+    set_color_alpha( _color, alpha );
+}
+
+gfloat SelectedColor::get_alpha() const
+{
+    return _alpha;
+}
+
+void SelectedColor::set_color_alpha(const SPColor& color, gfloat alpha, bool emit)
+{
+#ifdef DUMP_CHANGE_INFO
+    g_message("SelectedColor::setColorAlpha( this=%p, %f, %f, %f, %s,   %f,   %s) in %s", this, color.v.c[0], color.v.c[1], color.v.c[2], (color.icc?color.icc->colorProfile.c_str():"<null>"), alpha, (emit?"YES":"no"), FOO_NAME(_csel));
+#endif
+    g_return_if_fail( ( 0.0 <= alpha ) && ( alpha <= 1.0 ) );
+
+#ifdef DUMP_CHANGE_INFO
+    g_message("---- SelectedColor::setColorAlpha    virgin:%s   !close:%s    alpha is:%s in %s",
+              (_virgin?"YES":"no"),
+              (!color.isClose( _color, _epsilon )?"YES":"no"),
+              ((fabs((_alpha) - (alpha)) >= _epsilon )?"YES":"no"),
+              FOO_NAME(_csel)
+              );
+#endif
+
+    if ( _virgin || !color.isClose( _color, _epsilon ) ||
+         (fabs((_alpha) - (alpha)) >= _epsilon )) {
+
+        _virgin = false;
+
+        _color = color;
+        _alpha = alpha;
+
+        if (emit) {
+        	signal_changed.emit();
+        }
+#ifdef DUMP_CHANGE_INFO
+    } else {
+        g_message("++++ SelectedColor::setColorAlpha   color:%08x  ==>  _color:%08X   isClose:%s   in %s", color.toRGBA32(alpha), _color.toRGBA32(_alpha),
+                  (color.isClose( _color, _epsilon )?"YES":"no"), FOO_NAME(_csel));
+#endif
+    }
+}
+
+void SelectedColor::get_color_alpha(SPColor &color, gfloat &alpha) const {
+	color = _color;
+	alpha = _alpha;
+}
+
diff --git a/src/ui/selected-color.h b/src/ui/selected-color.h
new file mode 100644
index 000000000..f7f0d6ad0
--- /dev/null
+++ b/src/ui/selected-color.h
@@ -0,0 +1,55 @@
+/** @file
+ * Color selected in color selector widget.
+ * This file was created during the refactoring of SPColorSelector
+ *//*
+ * Authors:
+ *	 bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Authors
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+#ifndef SEEN_SELECTED_COLOR
+#define SEEN_SELECTED_COLOR
+
+#include <sigc++/signal.h>
+#include "color.h"
+
+class SelectedColor
+{
+public:
+    SelectedColor();
+    virtual ~SelectedColor();
+
+    void set_color( const SPColor& color );
+    SPColor get_color() const;
+
+    void set_alpha( gfloat alpha );
+    gfloat get_alpha() const;
+
+    void set_color_alpha( const SPColor& color, gfloat alpha, bool emit = false );
+    void get_color_alpha( SPColor &color, gfloat &alpha ) const;
+
+    sigc::signal<void> signal_changed;
+private:
+    // By default, disallow copy constructor and assignment operator
+    SelectedColor( const SelectedColor& obj );
+    SelectedColor& operator=( const SelectedColor& obj );
+
+	SPColor _color;
+	/**
+	 * Color alpha value guaranteed to be in [0, 1].
+	 */
+	gfloat _alpha;
+
+    /**
+     * This flag is true if no color is set yet
+     */
+    bool _virgin;
+
+    static double _epsilon;
+};
+
+#endif
+