better cam ref UI and clear keyframe ops

1.0.4:

- UI: Better cam ref exposition in Toolbox panel
  - Access to opacity
  - merge activation bool with source type icon
- feat: Added a clear active frame operator (`gp.clear_active_frame` to add manually in keymaps)

OP_helpers.py

@@ -449,6 +449,38 @@ class GPTB_OT_overlay_presets(bpy.types.Operator):
         
         return {'FINISHED'}
 
+class GPTB_OT_clear_active_frame(bpy.types.Operator):
+    bl_idname = "gp.clear_active_frame"
+    bl_label = "Clear Active Frame"
+    bl_description = "Delete all strokes in active frames"
+    bl_options = {"REGISTER"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.object and context.object.type == 'GPENCIL'
+    
+    def execute(self, context):
+        obj = context.object
+        l = obj.data.layers.active
+        if not l:
+            self.report({'ERROR'}, 'No layers')
+            return {'CANCELLED'}
+        f = l.active_frame
+        if not f:
+            self.report({'ERROR'}, 'No active frame')
+            return {'CANCELLED'}
+
+        ct = len(f.strokes)
+        if not ct:
+            self.report({'ERROR'}, 'Active frame already empty')
+            return {'CANCELLED'}
+
+        for s in reversed(f.strokes):
+            f.strokes.remove(s)
+        self.report({'INFO'}, f'Cleared active frame ({ct} strokes removed)')
+        
+        return {'FINISHED'}
+
 classes = (
 GPTB_OT_copy_text,
 GPTB_OT_flipx_view,
@@ -458,6 +490,7 @@ GPTB_OT_set_view_as_cam,
 GPTB_OT_reset_cam_rot,
 GPTB_OT_toggle_mute_animation,
 GPTB_OT_list_disabled_anims,
+GPTB_OT_clear_active_frame,
 )
 
 def register():

README.md

@@ -112,6 +112,14 @@ Panel in sidebar : 3D view > sidebar 'N' > Gpencil
 
 ## Changelog:
 
+
+1.0.4:
+
+- UI: Better cam ref exposition in Toolbox panel
+  - Access to opacity
+  - merge activation bool with source type icon
+- feat: Added a clear active frame operator (`gp.clear_active_frame` to add manually in keymaps)
+
 1.0.3:
 
 - feat: add "Append Materials To Selected" to material submenu. Append materials to other selected GP objects if there aren't there.

UI_tools.py

@@ -99,14 +99,19 @@ class GPTB_PT_sidebar_panel(bpy.types.Panel):
                     for bg_img in context.scene.camera.data.background_images:
                         if bg_img.source == 'IMAGE' and bg_img.image:
                             row = box.row(align=True)
-                            row.label(text=bg_img.image.name, icon='IMAGE_RGB')# FILE_IMAGE
-                            # row.prop(bg_img, 'alpha', text='')# options={'HIDDEN'}
-                            row.prop(bg_img, 'show_background_image', text='')# options={'HIDDEN'}
+                            row.prop(bg_img, 'show_background_image', text='', icon='IMAGE_RGB')
+                            row.prop(bg_img, 'alpha', text=bg_img.image.name) # options={'HIDDEN'}
+                            # row.label(icon='IMAGE_RGB')
+                            # icon = 'HIDE_OFF' if bg_img.show_background_image else 'HIDE_ON'
+                            # row.prop(bg_img, 'show_background_image', text='', icon=icon)
+                        
                         if bg_img.source == 'MOVIE_CLIP' and bg_img.clip:
                             row = box.row(align=True)
-                            row.label(text=bg_img.clip.name, icon='FILE_MOVIE')
-                            # row.prop(bg_img, 'alpha', text='')# options={'HIDDEN'}
-                            row.prop(bg_img, 'show_background_image', text='')# options={'HIDDEN'}
+                            row.prop(bg_img, 'show_background_image', text='', icon='FILE_MOVIE')
+                            row.prop(bg_img, 'alpha', text=bg_img.clip.name) # options={'HIDDEN'}
+                            # row.label(icon='FILE_MOVIE')
+                            # icon = 'HIDE_OFF' if bg_img.show_background_image else 'HIDE_ON'
+                            # row.prop(bg_img, 'show_background_image', text='', icon=icon)
 
             ## playblast params
             layout.separator()

__init__.py

@@ -15,7 +15,7 @@ bl_info = {
 "name": "GP toolbox",
 "description": "Set of tools for Grease Pencil in animation production",
 "author": "Samuel Bernou",
-"version": (1, 0, 3),
+"version": (1, 0, 4),
 "blender": (2, 91, 0),
 "location": "sidebar (N menu) > Gpencil > Toolbox / Gpencil properties",
 "warning": "",
@@ -371,7 +371,7 @@ class GPTB_prefs(bpy.types.AddonPreferences):
         if self.pref_tabs == 'MAN_OPS':
             # layout.separator()## notes 
             # layout.label(text='Notes:')
-            layout.label(text='Following operators ID have to be set manually :')
+            layout.label(text='Following operators ID have to be set manually in keymap if needed :')
             
             ## keyframe jump
             box = layout.box()
@@ -392,6 +392,13 @@ class GPTB_prefs(bpy.types.AddonPreferences):
             row.operator('wm.copytext', text='Copy "view3d.cusor_snap"', icon='COPYDOWN').text = 'view3d.cusor_snap'
             box.label(text='Or just create a new shortcut using cursor_snap')
             
+            ## Clear keyframe
+            box = layout.box()
+            box.label(text='Clear active frame (delete all strokes without deleting the frame)')
+            row = box.row()
+            row.label(text='gp.clear_active_frame')
+            row.operator('wm.copytext', icon='COPYDOWN').text = 'gp.clear_active_frame'
+
             ## user prefs 
             box = layout.box()
             box.label(text='Note: You can access user pref file and startup file in config folder')