VSE_Trim_Mode.py

VSE_Trim_Mode.py

bl_info = {
        "name": "Areatype Trim",
        "description":"This example adds a button which toggles a split of an area with another.",
        "author":"dustractor, tintwotin, Snuq, Stephen Graham",
        "version":(0,2),
        "blender":(2,79,0),
        "location":"Button prepended to the header of the sequencer.",
        "warning":"",
        "wiki_url":"",
        "category": "Sequencer"
        }

import bpy


class AREATYPE_OT_trim(bpy.types.Operator):
    bl_idname = "areatype.trimview"
    bl_label = "Dual View"

    original_area = None

    def execute(self,context):
        self.original_area = context.area
        original = context.copy()
        thisarea = context.area
        otherarea = None
        tgxvalue = thisarea.x + thisarea.width + 1
        thistype = context.area.type

        arealist = list(context.screen.areas)

        for area in context.screen.areas:
            if area == thisarea:
                continue
            elif area.x == tgxvalue and area.y == thisarea.y:
                otherarea = area
                break

        if otherarea: #leave trim-mode

            #join
            bpy.ops.screen.area_join(min_x=thisarea.x,min_y=thisarea.y,max_x=otherarea.x,max_y=otherarea.y)

            # normal settings
            bpy.context.scene.sequence_editor.show_overlay = False
            bpy.context.scene.sequence_editor.overlay_frame = 0 # clip start
            bpy.context.space_data.overlay_type = 'CURRENT'

            bpy.ops.screen.screen_full_area()
            bpy.ops.screen.screen_full_area()
            override = context.copy()
            area = self.original_area
            override['area'] = area
            override['space_data'] = area.spaces.active
            for region in area.regions:
                if region.type == 'PREVIEW':
                    break
            override['region'] = region
            bpy.ops.sequencer.view_all_preview(override)
            return {"FINISHED"}

        else: # enter trim-mode
            bpy.context.scene.sequence_editor.show_overlay = True
            bpy.context.scene.sequence_editor.overlay_frame = -1 # clip start/ +1 if clip end
            bpy.context.space_data.overlay_type = 'REFERENCE'
            areax = None

            #split
            bpy.ops.screen.area_split(direction="VERTICAL")

            #settings for preview 2.
            bpy.context.space_data.overlay_type = 'CURRENT'
            bpy.ops.sequencer.view_all_preview()

            # fit 1. preview to window
            bpy.ops.screen.screen_full_area()
            bpy.ops.screen.screen_full_area()
            override = original
            area = self.original_area
            override['area'] = area
            override['space_data'] = area.spaces.active

            for xarea in context.screen.areas:
                #print("XAREA")
                for xregion in xarea.regions:
                    #print("XREGION TYPE")
                    #print(xregion.type)
                    if xregion.type == 'PREVIEW': # replaced PREVIEW
                        override['region'] = xregion
                        bpy.ops.sequencer.view_all_preview(override)

            for area in context.screen.areas:
                if area not in arealist:
                    areax = area
                    break

            if areax:
                areax.type = thistype
                return {"FINISHED"}
        return {"CANCELLED"}


def draw_func(self,context):
    layout = self.layout
    layout.operator("areatype.trimview",text="Dual View",icon="ARROW_LEFTRIGHT")

	
def register():
    bpy.utils.register_class(AREATYPE_OT_trim)
    bpy.types.SEQUENCER_HT_header.prepend(draw_func)


def unregister():
    bpy.utils.unregister_class(AREATYPE_OT_trim)
    bpy.types.SEQUENCER_HT_header.remove(draw_func)


if __name__ == "__main__":
    register()