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tl;dr:\u00a0\u00a0<\/strong>save some of your precious time when using the Backdrop Node.<\/p>\n<\/div><\/div>\n

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Typically, when you use a Backdrop node to group a bunch of nodes, you want to set up a nice, descriptive label, a font size, and probably also a cool, elegant color.<\/strong> The problem is that usually, those tasks are done after the Backdrop node is created, one after the other, and that gets somewhat repetitive, boring and time-consuming in the long run.<\/strong><\/p>\n
If you want to save the burden and get those three things done at the same time, here I share with you a little Python snippet that will let you deal with your backdrops the easy way, and just at once.<\/p>\n
1 - How to use it<\/strong><\/p>\n
So first things first, let\u00b4s place the code where it can be reached, create a new Nuke Menu and set up a Hotkey. Let\u00b4s see how this works.<\/p>\n
Distribute the code<\/strong><\/p>\n
Copy the script and save it as a Python file called \"b_custom_bckdrp<\/span>.py\"\u00a0<\/span>where Nuke can find it. In other words, place it within the nuke.pluginPath() file structure. For more info, read my previous posts.<\/p>\n
Edit the menu.py file<\/strong><\/p>\n
Now we have the Python module where Nuke can find it, we\u00b4re gonna add the following lines to our fantastic menu.py so that we can effectively use it:<\/p>\n
n_menu = nuke.menu('Nuke') <\/span>
\nb_menu = n_menu.addMenu('MenuName')<\/span>
\nb_menu.addCommand('b_custom_bckdrp', 'b_custom_bckdrp.main_function()', 'ctrl+a')<\/span><\/p>\n
Save the menu.py and restart Nuke.<\/p>\n
2 - Try it<\/strong><\/p>\n
You'll notice that there is a new menu in your upper menu bar, listing the new 'b_custom_bckdrp' <\/span>command and its Hotkey. Just select a bunch of nodes and press 'alt+a '(it\u00b4s the hotkey we set up earlier, obviously you can change this to any other of your convenience). A Nuke Panel like this one should appear:
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Set the \"note size\" and \"label\" and click ok.<\/p>\n
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Now select a nice, elegant color (or leave it as is).<\/p>\n
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Finally, you should end up with something like this :D<\/p>\n
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code<\/strong><\/h6>\n
import nuke\r\nimport nukescripts\r\n\r\n\r\n######################################################################################\r\n\r\n__author__ = "Boris Martinez Castillo"\r\n__version__ = "1.0.1"\r\n__maintainer__ = "Boris Martinez Castillo"\r\n__email__ = "boris.vfx@outlook.com"\r\n\r\n######################################################################################\r\n\r\n\r\ndef custom_backdrop(txt,fontsize):\r\n\r\n node = nukescripts.autoBackdrop()\r\n node['label'].setValue('<center><u><b>' + txt)\r\n #node['bdwidth'].setValue(525)\r\n prev_sel = nuke.selectedNodes()\r\n for i in prev_sel:\r\n i['selected'].setValue(False) \r\n node['selected'].setValue(True)\r\n \r\n node['note_font_size'].setValue(fontsize)\r\n nukescripts.color_nodes()\r\n\r\n\r\nclass modalPanel(nukescripts.PythonPanel):\r\n\r\n def __init__(self):\r\n nukescripts.PythonPanel.__init__(self,"customize_backdrop")\r\n\r\n\r\n #CREATE KNOBS\r\n\r\n self.note_size = nuke.Int_Knob("Note Size:")\r\n self.note_size.clearFlag(nuke.STARTLINE)\r\n self.frame_display = nuke.String_Knob("Label:")\r\n self.frame_display.clearFlag(nuke.STARTLINE)\r\n self.set_note_size_default_value()\r\n self.author = nuke.Text_Knob("written by Boris Martinez")\r\n\r\n #ADD KNOBS\r\n\r\n for i in (self.note_size , self.frame_display):\r\n self.addKnob(i)\r\n\r\n #SET KNOB DEFAULT VALUES\r\n\r\n def set_note_size_default_value(self):\r\n self.note_size.setValue(100)\r\n\r\n \r\ndef main_function():\r\n \r\n panel = modalPanel()\r\n if not panel.showModalDialog():\r\n print "script aborted"\r\n return\r\n else:\r\n fontsize = panel.note_size.getValue()\r\n note = panel.frame_display.getValue()\r\n\r\n\r\n custom_backdrop(note,fontsize) \r\n\r\n\r\nif __name__ == "__main__":\r\n main_function()<\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"
Typically, when you use a Backdrop node to group a bunch of nodes, you want to set up a nice, descriptive label, a font size, and probably also a cool, elegant color. The problem is that usually, those tasks are done after the Backdrop node is created, one after the other, and that gets somewhat […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[50,47,48,49],"tags":[],"class_list":["post-2265","post","type-post","status-publish","format-standard","hentry","category-begginer","category-nuke","category-python","category-scripting"],"_links":{"self":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts\/2265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2265"}],"version-history":[{"count":25,"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts\/2265\/revisions"}],"predecessor-version":[{"id":2497,"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts\/2265\/revisions\/2497"}],"wp:attachment":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}