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#
#  This program is free software; you can redistribute it and/or
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#  as published by the Free Software Foundation; either version 2
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#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
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#  along with this program; if not, write to the Free Software Foundation,
#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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# ##### END GPL LICENSE BLOCK #####

# By CoDEmanX

import bpy

class DATA_PT_info_panel(bpy.types.Panel):
    """Creates a face info / select panel in the Object properties window"""
    bl_label = "Face info / select"
    bl_idname = "DATA_PT_face_info"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "data"
    bl_options = {'DEFAULT_CLOSED'}

    @classmethod
    def poll(self, context):
        return context.active_object is not None and context.active_object.type == 'MESH'

    def draw(self, context):
        layout = self.layout

        ob = context.active_object

        info_str = ""
        tris = quads = ngons = 0

        for p in ob.data.polygons:
            count = p.loop_total
            if count == 3:
                tris += 1
            elif count == 4:
                quads += 1
            else:
                ngons += 1

        info_str = "  Ngons: %i  Quads: %i  Tris: %i" % (ngons, quads, tris)

        col = layout.column()
        col.label(info_str, icon='MESH_DATA')

        col = layout.column()
        col.label("Select faces by type:")

        row = layout.row()
        row.operator("data.facetype_select", text="Ngons").face_type = "5"
        row.operator("data.facetype_select", text="Quads").face_type = "4"
        row.operator("data.facetype_select", text="Tris").face_type = "3"
