X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fsynfig%2Fcanvas.h;h=a7de319b8ed81f545f1d47bd4a5384668f03a688;hb=c0db341787d20c8e8238e07a26c10bf922e3dbbc;hp=af168f935d474ec96e7d814e5373f46246994246;hpb=a11a35f647a3a6e61518ddfd61c9e199e25da3ef;p=synfig.git

diff --git a/synfig-core/trunk/src/synfig/canvas.h b/synfig-core/trunk/src/synfig/canvas.h
index af168f9..a7de319 100644
--- a/synfig-core/trunk/src/synfig/canvas.h
+++ b/synfig-core/trunk/src/synfig/canvas.h
@@ -6,7 +6,7 @@
 **
 **	\legal
 **	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**	Copyright (c) 2007 Chris Moore
+**	Copyright (c) 2007, 2008 Chris Moore
 **
 **	This package is free software; you can redistribute it and/or
 **	modify it under the terms of the GNU General Public License as
@@ -45,6 +45,44 @@
 
 /* === M A C R O S ========================================================= */
 
+/* version change history:
+ *
+ * 0.1: the original version
+ *
+ *      if a waypoint goes from -179 to 179 degrees, that is a 2
+ *      degree change.  there's no way to express a 720 degree
+ *      rotation with a single pair of waypoints
+ *
+ * 0.2: svn r1227
+ *
+ *      angles no longer wrap at -180 degrees back to 180 degrees; if
+ *      a waypoint goes from -179 to 179 degrees, that is a rotation
+ *      of 358 degrees.  loading a version 0.1 canvas will modify
+ *      constant angle waypoints to that they are within 180 degrees
+ *      of the previous waypoint's value
+ *
+ *      the 'straight' blend method didn't used to work properly.  it
+ *      didn't work at all on transparent pixels in layers other than
+ *      the PasteCanvas layer.  for example, the examples/japan.sifz
+ *      file has a red circle (straight, amount=1.0) on top of a
+ *      striped conical gradient.  if 'straight' was working, the
+ *      conical gradient would be entirely obscured by the circle
+ *      layer (even by its transparent pixels)
+ *
+ * 0.3: svn r1422
+ *
+ *      the 'straight' blend method was fixed.  loading a version 0.2
+ *      or older canvas will replace the 'straight' blend method in
+ *      non-pastecanvas layers with 'composite', unless they're
+ *      completely transparent, in which case it will replace them
+ *      with an  'alpha over' blend instead.  Images like
+ *      examples/logo.sifz use transparent straight blends to do
+ *      masking, which no longer works now that 'straight' blending is
+ *      fixed.
+ */
+
+#define CURRENT_CANVAS_VERSION "0.3"
+
 /* === T Y P E D E F S ===================================================== */
 
 /* === C L A S S E S & S T R U C T S ======================================= */
@@ -70,7 +108,7 @@ public:
 
 	typedef std::list<Handle> Children;
 
-	friend void synfig::optimize_layers(Context, Canvas::Handle, bool seen_motion_blur);
+	friend void synfig::optimize_layers(Time, Context, Canvas::Handle, bool seen_motion_blur);
 
 	/*
  --	** -- D A T A -------------------------------------------------------------
@@ -90,6 +128,10 @@ private:
 	/*!	\see set_description(), get_description() */
 	String description_;
 
+	//! Contains the canvas' version string
+	/*!	\see set_version(), get_version() */
+	String version_;
+
 	//! Contains the author's name
 	/*!	\see set_author(), get_author() */
 	String author_;
@@ -290,6 +332,12 @@ public:
 	//! Sets the name of the canvas
 	void set_name(const String &x);
 
+	//! Gets the version string of the canvas
+	const String get_version()const { return version_; }
+
+	//! Sets the version string of the canvas
+	void set_version(const String &x) { version_ = x; }
+
 	//! Gets the author of the canvas
 	const String & get_author()const { return author_; }
 
@@ -486,7 +534,7 @@ protected:
 	virtual void get_times_vfunc(Node::time_set &set) const;
 }; // END of class Canvas
 
-void optimize_layers(Context context, Canvas::Handle op_canvas, bool seen_motion_blur=false);
+void optimize_layers(Time time, Context context, Canvas::Handle op_canvas, bool seen_motion_blur=false);
 
 
 }; // END of namespace synfig