# ##### BEGIN GPL LICENSE BLOCK #####
#
#  This program is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License
#  as published by the Free Software Foundation; either version 2
#  of the License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software Foundation,
#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####

bl_info = {
    "name": "ImageChanger",
    "author": "Dalai Felinto (dfelinto)",
    "version": (1,0),
    "blender": (2, 5, 9),
    "api": 39000,
    "location": "Properties > Texture",
    "description": "Change your texture everyframe",
    "wiki_url": "",
    "tracker_url": "",
    "category": "Texture"}

# ########################################################
# Image Changer
# (note barely based in an old script, completely remodernized to Blender 2.5)
#
# Dalai Felinto (dfelinto)
# www.dalaifelinto.com
#
# Rio de Janeiro - Brasil
# Vancouver - Canada
# ########################################################

import bpy
import os

class DATA_PT_image_changer(bpy.types.Panel):
    bl_label = "Image Changer"
    bl_space_type = 'PROPERTIES'
    bl_region_type = 'WINDOW'
    bl_context = "texture"

    @classmethod
    def poll(cls, context):
        if context.texture.type != 'IMAGE':
            return False
        return True
    
    def draw(self, context):
        layout = self.layout
        layout.prop(context.texture, "image_hash")
        layout.prop(context.texture, "image_slide")
    
def slideUpdate(self, context):
    # extract properties from the texture object
    image_hash = self.image_hash
    image_slide = self.image_slide
    imageChanger(self, image_slide, image_hash)

def imageChanger(texture, image_slide, image_hash):
    """"""
    VERBOSE = False
    if texture.type != 'IMAGE': return

    image = texture.image
    basedir = os.path.dirname(image.filepath)
    filename = image_hash % image_slide
    filepath = os.path.join(basedir, filename)

    image.filepath = filepath
    # image automatically reloaded
    
def register():
    bpy.types.Texture.image_hash = bpy.props.StringProperty(
        name="Hash",
        default="%03d.png",
        description="String formatting for the filename. Use python notation (e.g. \"img-%03d.png\" will be \"img-003.png\" or \"img-9999.png\")",
        update=slideUpdate)
        
    bpy.types.Texture.image_slide = bpy.props.IntProperty(
        name="Slide",
        min=0,
        subtype='UNSIGNED',
        description="Slide number to use in this frame",
        update=slideUpdate)
    
    bpy.utils.register_module(__name__)

def unregister():
    del bpy.types.Texture.image_hash
    del bpy.types.Texture.image_slide
    bpy.utils.unregister_module(__name__)

if __name__ == "__main__":
    register()