#--------------------------------------------------------------------------
# Software:     InVesalius - Software de Reconstrucao 3D de Imagens Medicas
# Copyright:    (C) 2001  Centro de Pesquisas Renato Archer
# Homepage:     http://www.softwarepublico.gov.br
# Contact:      invesalius@cti.gov.br
# License:      GNU - GPL 2 (LICENSE.txt/LICENCA.txt)
#--------------------------------------------------------------------------
#    Este programa e software livre; voce pode redistribui-lo e/ou
#    modifica-lo sob os termos da Licenca Publica Geral GNU, conforme
#    publicada pela Free Software Foundation; de acordo com a versao 2
#    da Licenca.
#
#    Este programa eh distribuido na expectativa de ser util, mas SEM
#    QUALQUER GARANTIA; sem mesmo a garantia implicita de
#    COMERCIALIZACAO ou de ADEQUACAO A QUALQUER PROPOSITO EM
#    PARTICULAR. Consulte a Licenca Publica Geral GNU para obter mais
#    detalhes.
#--------------------------------------------------------------------------

import wx
import os
import wx.lib.embeddedimage as emb
import wx.lib.hyperlink as hl
import wx.lib.platebtn as pbtn
from wx.lib.pubsub import pub as Publisher

import invesalius.constants as constants
import invesalius.constants as const

ID_BTN_MEASURE_LINEAR = wx.NewId()
ID_BTN_MEASURE_ANGULAR = wx.NewId()
ID_BTN_ANNOTATION = wx.NewId()

class TaskPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)

        inner_panel = InnerTaskPanel(self)

        sizer = wx.BoxSizer(wx.HORIZONTAL)
        sizer.Add(inner_panel, 1, wx.EXPAND | wx.GROW | wx.BOTTOM | wx.RIGHT |
                  wx.LEFT, 7)
        sizer.Fit(self)

        self.SetSizer(sizer)
        self.Update()
        self.SetAutoLayout(1)

class InnerTaskPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.SetBackgroundColour(wx.Colour(255,255,255))
        self.SetAutoLayout(1)

        # Counter for projects loaded in current GUI
        self.proj_count = 0

        # Floating items (to be inserted)
        self.float_hyper_list = []

        # Fixed text and hyperlink items
        tooltip = wx.ToolTip(_("Measure distances"))
        txt_measure = wx.StaticText(self, -1, _("Measure"))
        txt_measure.SetToolTip(tooltip)

        tooltip = wx.ToolTip(_("Add text annotations"))
        txt_annotation = hl.HyperLinkCtrl(self, -1,_("Add text annotations"))
        txt_annotation.SetUnderlines(False, False, False)
        txt_annotation.SetColours("BLACK", "BLACK", "BLACK")
        txt_annotation.SetToolTip(tooltip)
        txt_annotation.AutoBrowse(False)
        txt_annotation.UpdateLink()
        txt_annotation.Bind(hl.EVT_HYPERLINK_LEFT, self.OnTextAnnotation)

        # Image(s) for buttons
        BMP_ANNOTATE = wx.Bitmap(os.path.join(const.ICON_DIR, "annotation.png"), wx.BITMAP_TYPE_PNG)
        BMP_ANGLE = wx.Bitmap(os.path.join(const.ICON_DIR, "measure_angle.jpg"), wx.BITMAP_TYPE_JPEG)
        BMP_DISTANCE = wx.Bitmap(os.path.join(const.ICON_DIR, "measure_line.png"), wx.BITMAP_TYPE_PNG)
        BMP_ANNOTATE.SetWidth(25)
        BMP_ANNOTATE.SetHeight(25)
        BMP_ANGLE.SetWidth(25)
        BMP_ANGLE.SetHeight(25)
        BMP_DISTANCE.SetWidth(25)
        BMP_DISTANCE.SetHeight(25)

        # Buttons related to hyperlinks
        button_style = pbtn.PB_STYLE_SQUARE | pbtn.PB_STYLE_DEFAULT

        button_measure_linear = pbtn.PlateButton(self, ID_BTN_MEASURE_LINEAR, "",
                                               BMP_DISTANCE, style=button_style)
        button_measure_angular = pbtn.PlateButton(self, ID_BTN_MEASURE_ANGULAR, "",
                                              BMP_ANGLE, style=button_style)

        button_annotation = pbtn.PlateButton(self, ID_BTN_ANNOTATION, "",
                                              BMP_ANNOTATE, style=button_style)

        # When using PlaneButton, it is necessary to bind events from parent win
        self.Bind(wx.EVT_BUTTON, self.OnButton)

        # Tags and grid sizer for fixed items
        flag_link = wx.EXPAND|wx.GROW|wx.LEFT|wx.TOP
        flag_button = wx.EXPAND | wx.GROW

        sizer = wx.GridBagSizer(hgap=0, vgap=0)
        sizer.Add(txt_measure,pos=(0,0),flag=wx.GROW|wx.EXPAND|wx.TOP,border=3)
        sizer.Add(button_measure_linear,pos=(0,1),flag=wx.GROW|wx.EXPAND)
        sizer.Add(button_measure_angular,pos=(0,2),flag=wx.GROW|wx.EXPAND)
        sizer.Add(txt_annotation, pos=(1,0),flag=wx.GROW|wx.EXPAND)
        sizer.Add(button_annotation, pos=(1,2),span=(2,1), flag=wx.GROW|wx.EXPAND)
        sizer.AddGrowableCol(0)

        # Add line sizers into main sizer
        main_sizer = wx.BoxSizer(wx.VERTICAL)
        main_sizer.Add(sizer, 0, wx.GROW|wx.EXPAND)
        main_sizer.Fit(self)

        # Update main sizer and panel layout
        self.SetSizer(sizer)
        self.Fit()
        self.sizer = main_sizer

    def OnTextAnnotation(self, evt=None):
        print "TODO: Send Signal - Add text annotation (both 2d and 3d)"

    def OnLinkLinearMeasure(self):
        Publisher.sendMessage('Enable style',
                constants.STATE_MEASURE_DISTANCE)

    def OnLinkAngularMeasure(self):
        Publisher.sendMessage('Enable style',
                constants.STATE_MEASURE_ANGLE)

    def OnButton(self, evt):
        id = evt.GetId()

        if id == ID_BTN_MEASURE_LINEAR:
            self.OnLinkLinearMeasure()
        elif id == ID_BTN_MEASURE_ANGULAR:
            self.OnLinkAngularMeasure()
        else: # elif id == ID_BTN_ANNOTATION:
            self.OnTextAnnotation()