# -*- coding: utf-8 -*-

#***************************************************************************
#*                                                                         *
#*   Copyright (c) 2014 Yorik van Havre <yorik@uncreated.net>              *
#*                                                                         *
#*   This program is free software; you can redistribute it and/or modify  *
#*   it under the terms of the GNU Lesser General Public License (LGPL)    *
#*   as published by the Free Software Foundation; either version 2 of     *
#*   the License, or (at your option) any later version.                   *
#*   for detail see the LICENCE text file.                                 *
#*                                                                         *
#*   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 Library General Public License for more details.                  *
#*                                                                         *
#*   You should have received a copy of the GNU Library General Public     *
#*   License along with this program; if not, write to the Free Software   *
#*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
#*   USA                                                                   *
#*                                                                         *
#***************************************************************************

import FreeCAD,FreeCADGui,Path,PathGui
from PySide import QtCore,QtGui

"""Path Hop object and FreeCAD command"""

# Qt tanslation handling
try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def translate(context, text, disambig=None):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def translate(context, text, disambig=None):
        return QtGui.QApplication.translate(context, text, disambig)


class ObjectHop:
    

    def __init__(self,obj):
        obj.addProperty("App::PropertyLink","NextObject","Path","The object to be reached by this hop")
        obj.addProperty("App::PropertyDistance","HopHeight","Path","The Z height of the hop")
        obj.Proxy = self

    def __getstate__(self):
        return None

    def __setstate__(self,state):
        return None
        
    def execute(self,obj):
        nextpoint = FreeCAD.Vector()
        if obj.NextObject:
            if obj.NextObject.isDerivedFrom("Path::Feature"):
                # look for the first position of the next path
                for c in obj.NextObject.Path.Commands:
                    if c.Name in ["G0","G00","G1","G01","G2","G02","G3","G03"]:
                        nextpoint = c.Placement.Base
                        break
        
        # absolute coords, millimeters, cancel offsets
        output = "G90\nG21\nG40\n"
        
        # go up to the given height
        output += "G0 Z" + str(obj.HopHeight.Value) + "\n"
        
        # go horizontally to the position of nextpoint
        output += "G0 X" + str(nextpoint.x) + " Y" + str(nextpoint.y) + "\n"
                
        #print output
        path = Path.Path(output)
        obj.Path = path



class ViewProviderPathHop:

    def __init__(self,vobj):
        vobj.Proxy = self

    def attach(self,vobj):
        self.Object = vobj.Object
        return

    def getIcon(self):
        return ":/icons/Path-Hop.svg"

    def __getstate__(self):
        return None

    def __setstate__(self,state):
        return None



class CommandPathHop:


    def GetResources(self):
        return {'Pixmap'  : 'Path-Hop',
                'MenuText': QtCore.QT_TRANSLATE_NOOP("Path_Hop","Hop"),
                'Accel': "P, H",
                'ToolTip': QtCore.QT_TRANSLATE_NOOP("Path_Hop","Creates a Path Hop object")}

    def IsActive(self):
        return not FreeCAD.ActiveDocument is None
        
    def Activated(self):
        
        # check that the selection contains exactly what we want
        selection = FreeCADGui.Selection.getSelection()
        if len(selection) != 1:
            FreeCAD.Console.PrintError(translate("Path_Hop","Please select one path object\n"))
            return
        if not selection[0].isDerivedFrom("Path::Feature"):
            FreeCAD.Console.PrintError(translate("Path_Hop","The selected object is not a path\n"))
            return
        
        FreeCAD.ActiveDocument.openTransaction(translate("Path_Hop","Create Hop"))
        FreeCADGui.addModule("PathScripts.PathHop")
        FreeCADGui.addModule("PathScripts.PathUtils")
        FreeCADGui.doCommand('obj = FreeCAD.ActiveDocument.addObject("Path::FeaturePython","Hop")')
        FreeCADGui.doCommand('PathScripts.PathHop.ObjectHop(obj)')
        FreeCADGui.doCommand('PathScripts.PathHop.ViewProviderPathHop(obj.ViewObject)')
        FreeCADGui.doCommand('obj.NextObject = FreeCAD.ActiveDocument.' + selection[0].Name)
        FreeCADGui.doCommand('PathScripts.PathUtils.addToProject(obj)')
        FreeCAD.ActiveDocument.commitTransaction()
        FreeCAD.ActiveDocument.recompute()


if FreeCAD.GuiUp: 
    # register the FreeCAD command
    FreeCADGui.addCommand('Path_Hop',CommandPathHop())

FreeCAD.Console.PrintLog("Loading PathHop... done\n")