Allow rake/random brush rotation for random mapping mode. Some
interesting things can be accomplished this way, such as tiger stripes
for instance.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55998 954f8c5b-7b00-dc11-b283-0030488c597c
code cleanup: warnings + style


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55999 954f8c5b-7b00-dc11-b283-0030488c597c
code cleanup: use `const char` for args and replace wm_keyconfig_list_find() -> BLI_findstring()


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56001 954f8c5b-7b00-dc11-b283-0030488c597c
Add update to brush texture preview when brush is changed. Solves
cycling through tools with number or tool keys and no texture preview
getting updated.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56002 954f8c5b-7b00-dc11-b283-0030488c597c
improved tooltips

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56003 954f8c5b-7b00-dc11-b283-0030488c597c
Fix for [#34968] Cross compiling from linux for windows is broken
* Patch by Martijn Berger (juicyfruit).

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56004 954f8c5b-7b00-dc11-b283-0030488c597c
improved tooltips even more (as discussed in IRC)

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56005 954f8c5b-7b00-dc11-b283-0030488c597c
Bug fix #34896

The feature "Keep Session" was also loading that session when you double-click
on a .blend to open it, or when a .blend file was on commandline.

Moved this feature to the main() in creator.c, so it can check on it properly, skipping the
kept session when a file was loaded.



git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56006 954f8c5b-7b00-dc11-b283-0030488c597c
Cycles / Save Buffers:
* Save Buffers could not be disabled in the UI, when "Full Sample" was enabled in Blender Internal. 

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56007 954f8c5b-7b00-dc11-b283-0030488c597c
Fix compilation, ifdef test_file just in case it is useful for later.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56008 954f8c5b-7b00-dc11-b283-0030488c597c
Accidentally left in test function. All's fine now!



git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56009 954f8c5b-7b00-dc11-b283-0030488c597c
code cleanup: remove unused string formatting in bli_adddirstrings(), also remove unused initializations and comment unused vars.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56010 954f8c5b-7b00-dc11-b283-0030488c597c
Usability fix, own collection.

If you have two windows, each with different scene, the render output for a window
would go to the other, if it was already drawing a render for the other scene.

Now you can have renders draw correct in two windows for two scenes.



git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56011 954f8c5b-7b00-dc11-b283-0030488c597c
Replacing the node Add menu and making the toolbar useful

As some people have already noticed, the "Add" menu for nodes is a bit messy since pynodes merge. The reason for this is that the order of nodes in submenus (categories) was previously defined by the order in which all nodes are registered (at the bottom of blenkernel/intern/node.c). For the dynamic registration of node types now possible this system of defining node order along with registration is no longer viable: while it would still sort of work for C nodes, it is completely meaningless for dynamic (python) nodes, which are basically registered automatically in whatever order modules and addons are loaded, with the added complexity of unloading and reloading.

To fix this problem and add a bunch of desirable features this commit replaces the C menu with a python implementation. The new menu does not rely on any particular order of types in the node registry, but instead uses a simple explicit list of all the available nodes, grouped by categories (in scripts/nodeitems_builtins.py).

There are a number of additional features that become possible with this implementation:

1) Node Toolbar can be populated!
The list of nodes is used to create 2 UI items for each node: 1 entry in a submenu of "Add" menu and 1 item in a node toolbar panel with basically the same functionality. Clicking a button in the toolbar will add a new node of this type, just like selecting an item in the menu. The toolbar has the advantage of having collapsible panels for each category, so users can decide if they don't need certain nodes categories and have the rest more easily accessible.

2) Each node item is a true operator call.
The old Add menu is a pretty old piece of C code which doesn't even use proper operator buttons. Now there is a generic node_add operator which can be used very flexibly for adding any of the available nodes.

3) Node Items support additional settings.
Each "NodeItem" consists of the basic node type plus an optional list of initial settings that shall be applied to a new instance. This gives additional flexibility for creating variants of the same node or for defining preferred initial settings. E.g. it has been requested to disable previews for all nodes except inputs, this would be simple change in the py code and much less intrusive than in C.

4) Node items can be generated with a function.
A callback can be used in any category instead of the fixed list, which generates a set of items based on the context (much like dynamic enum items in bpy.props). Originally this was implemented for group nodes, because these nodes only make sense when linked to a node tree from the library data. This principle could come in handy for a number of other nodes, e.g. Image nodes could provide a similar list of node variants based on images in the library - no need to first add node, then select an image.

WARNING: pynodes scripters will have to rework their "draw_add_menu" callback in node tree types, this has been removed now! It was already pretty redundant, since one can add draw functions to the Add menu just like for any other menu. In the future i'd like to improve the categories system further so scripters can use it for custom node systems too, for now just make a draw callback and attach it to the Add menu.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56012 954f8c5b-7b00-dc11-b283-0030488c597c
Node categories / Add menu:
* Fix for Subsurface Scattering node.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56013 954f8c5b-7b00-dc11-b283-0030488c597c
Node Toolbar:
* Have panels closed by default.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56014 954f8c5b-7b00-dc11-b283-0030488c597c
Fix: uiBlockSetNFunc was using uiButHandleFunc as param signature, instead of uiButHandleNFunc one (was working because both are the same currently).

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56015 954f8c5b-7b00-dc11-b283-0030488c597c
Fix some compilation errors for MinGW. Thanks to vildas on irc for
bringing this to attention.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56016 954f8c5b-7b00-dc11-b283-0030488c597c
Node UI:
* Now that the toolbar is useful, add menu entry into the "View" menu. 

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56017 954f8c5b-7b00-dc11-b283-0030488c597c
Node editor: create the toolbar area right at the start in node space, in order to show the '+' icon for expanding.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56018 954f8c5b-7b00-dc11-b283-0030488c597c