user: Show practical ways to work with Bpy.Utils.Previews in a Blender add-on or script – include code.

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Note You are not using the most up to date version of the documentation. is the newest version. Back to top Toggle Light / Dark / Auto color theme Toggle table of contents sidebar bpy.utils submodule (bpy.utils.previews) ¶ This module contains utility functions to handle custom previews. It behaves as a high-level ‘cached’ previews manager. This allows scripts to generate their own previews, and use them as icons in UI widgets (‘icon_value’ for UILayout functions). Custom Icon Example ¶ # This sample script demonstrates how to place a custom icon on a button or # menu entry. # # IMPORTANT NOTE: if you run this sample, there will be no icon in the button # You need to replace the image path with a real existing one. # For distributable scripts, it is recommended to place the icons inside the # addon folder and access it relative to the py script file for portability # # # Other use cases for UI-previews: # - provide a fixed list of previews to select from # - provide a dynamic list of preview (eg. calculated from reading a directory) # # For the above use cases, see the template `ui_previews_dynamic_enum.py`. import os import bpy class PreviewsExamplePanel ( bpy . types . Panel ): """Creates a Panel in the Object properties window""" bl_label = "Previews Example Panel" bl_idname = "OBJECT_PT_previews" bl_space_type = &#39;PROPERTIES&#39; bl_region_type = &#39;WINDOW&#39; bl_context = "object" def draw ( self , context ): layout = self . layout pcoll = preview_collections [ "main" ] row = layout . row () my_icon = pcoll [ "my_icon" ] row . operator ( "render.render" , icon_value = my_icon . icon_id ) # my_icon.icon_id can be used in any UI function that accepts # icon_value # try also setting text="" # to get an icon only operator button # We can store multiple preview collections here, # however in this example we only store "main" preview_collections = {} def register (): # Note that preview collections returned by bpy.utils.previews # are regular py objects - you can use them to store custom data. import bpy.utils.previews pcoll = bpy . utils . previews . new () # path to the folder where the icon is # the path is calculated relative to this py file inside the addon folder my_icons_dir = os . path . join ( os . path . dirname ( __file__ ), "icons" ) # load a preview thumbnail of a file and store in the previews collection pcoll . load ( "my_icon" , os . path . join ( my_icons_dir , "icon-image.png" ), &#39;IMAGE&#39; ) preview_collections [ "main" ] = pcoll bpy . utils . register_class ( PreviewsExamplePanel ) def unregister (): for pcoll in preview_collections . values (): bpy . utils . previews . remove ( pcoll ) preview_collections . clear () bpy . utils . unregister_class ( PreviewsExamplePanel ) if __name__ == "__main__" : register () bpy.utils.previews. new ( ) ¶ Returns : a new preview collection. Return type : ImagePreviewCollection bpy.utils.previews. remove ( pcoll ) ¶ Remove the specified previews collection. Parameters : pcoll ( ImagePreviewCollection ) – Preview collection to close. class bpy.utils.previews. ImagePreviewCollection ¶ Dictionary-like class of previews. This is a subclass of Python’s built-in dict type, used to store multiple image previews. Note instance with bpy.utils.previews.new keys must be str type. values will be bpy.types.ImagePreview clear ( ) ¶ Clear all previews. close ( ) ¶ Close the collection and clear all previews. load ( name , filepath , filetype , force_reload = False ) ¶ Generate a new preview from given file path. Parameters : name ( str ) – The name (unique id) identifying the preview. filepath ( str | bytes ) – The file path to generate the preview from. filetype ( str ) – The type of file, needed to generate the preview in [‘IMAGE’, ‘MOVIE’, ‘BLEND’, ‘FONT’]. force_reload ( bool ) – If True, force running thumbnail manager even if preview already exists in cache. Returns : The Preview matching given name, or a new empty one. Return type : bpy.types.ImagePreview Raises : KeyError – if name already exists. new ( name ) ¶ Generate a new empty preview. Parameters : name ( str ) – The name (unique id) identifying the preview. Returns : The Preview matching given name, or a new empty one. Return type : bpy.types.ImagePreview Raises : KeyError – if name already exists. Next bpy.utils submodule (bpy.utils.units) Previous Utilities (bpy.utils) Copyright &#169; Blender Authors Made with Furo Report issue on this page On this page bpy.utils submodule (bpy.utils.previews) Custom Icon Example new() remove() bpy.utils.previews.ImagePreviewCollection bpy.utils.previews.ImagePreviewCollection.clear() bpy.utils.previews.Im