Pipette and "On Preview Widgets" branch. See issue 227

The pipette part is already working quite nice but need to be finished. The widgets part needs more work...

rtengine/imagedimensions.h

@@ -0,0 +1,49 @@
+/*
+ *  This file is part of RawTherapee.
+ *
+ *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
+ *
+ *  RawTherapee 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  RawTherapee 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 RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _IMAGEDIMENSIONS_
+#define _IMAGEDIMENSIONS_
+
+class PreviewProps {
+	public:
+		int x, y, w, h, skip;
+		PreviewProps (int _x, int _y, int _w, int _h, int _skip)
+					 : x(_x), y(_y), w(_w), h(_h), skip(_skip) {}
+};
+
+/*
+ * Description of an image dimension, with getter and setter
+ */
+class ImageDimensions {
+
+	public:
+		int width;
+		int height;
+
+	public:
+		ImageDimensions() : width(-1), height(-1) {}
+		int getW       () { return width;  }
+		int getH       () { return height; }
+		int getWidth   () { return width;  }
+		int getHeight  () { return height; }
+		void transform (PreviewProps pp, int tran, int &sx1, int &sy1, int &sx2, int &sy2);
+};
+
+
+#endif