#!/usr/bin/env python
# -*- mode: python; coding: utf-8; -*-
# ---------------------------------------------------------------------------#
#
# Copyright (C) 1998-2003 Markus Franz Xaver Johannes Oberhumer
# Copyright (C) 2003 Mt. Hood Playing Card Co.
# Copyright (C) 2005-2009 Skomoroh
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
# ---------------------------------------------------------------------------#

# kivy implementation:
# most of the code will not be used, but some important function have been
# emulated.

from __future__ import division

import logging
import os
from array import array

from kivy.clock import Clock
from kivy.core.image import Image as CoreImage
from kivy.core.text import Label as CoreLabel
from kivy.graphics.texture import Texture

from pysollib.kivy.LApp import LImage
from pysollib.kivy.LApp import LTopLevel0

# ************************************************************************
# * window manager util
# ************************************************************************


def wm_withdraw(window):
    window.wm_withdraw()


def wm_map(window, maximized=0):
    return


# ************************************************************************
# * window util
# ************************************************************************


def setTransient(window, parent, relx=None, rely=None, expose=1):
    # Make an existing toplevel window transient for a parent.
    #
    # The window must exist but should not yet have been placed; in
    # other words, this should be called after creating all the
    # subwidget but before letting the user interact.

    # not used in kivy (highly tk specific).
    return


def makeToplevel(parent, title=None):
    print('tkutil: makeTopLevel')

    # Create a Toplevel window.
    #
    window = LTopLevel0(parent, title)
    # window = LTopLevelPopup(parent, title)
    return window.content


def make_help_toplevel(app, title=None):
    # Create an independent Toplevel window.

    window = app.top

    # from pysollib.winsystems import init_root_window
    # window = Tkinter.Tk(className=TITLE)
    # init_root_window(window, app)
    return window


# ************************************************************************
# * bind wrapper - Tkinter doesn't properly delete all bindings
# ************************************************************************

__mfx_bindings = {}
__mfx_wm_protocols = ("WM_DELETE_WINDOW", "WM_TAKE_FOCUS", "WM_SAVE_YOURSELF")


def bind(widget, sequence, func, add=None):

    # logging.info('tkutil: bind  %s %s %s %s '
    #              % (widget, sequence, func, add))

    # logging.info('tkutil: bind canvas = ' % str(widget.canvas))

    if hasattr(widget, 'bindings'):
        # logging.info('tkutil: bind  %s %s %s %s '
        #              % (sequence, widget, func, add))
        widget.bindings[sequence] = func
    else:
        # logging.info('tkutil: bind failed %s %s' % (sequence, widget))
        pass

    if (sequence == '<KeyPress-Left>'):
        return
    if (sequence == '<KeyPress-Right>'):
        return
    if (sequence == '<KeyPress-Prior>'):
        return
    if (sequence == '<KeyPress-Next>'):
        return
    if (sequence == '<KeyPress-Up>'):
        return
    if (sequence == '<KeyPress-Down>'):
        return
    if (sequence == '<KeyPress-Begin>'):
        return
    if (sequence == '<KeyPress-Home>'):
        return
    if (sequence == '<KeyPress-End>'):
        return
    if (sequence == '<KeyPress-Down>'):
        return

    if (sequence == '<4>'):
        return
    if (sequence == '<5>'):
        return

    if (sequence == '<1>'):
        return
    if (sequence == '<Motion>'):
        return
    if (sequence == '<ButtonRelease-1>'):
        return
    if (sequence == '<Control-1>'):
        return
    if (sequence == '<Shift-1>'):
        return
    if (sequence == '<Double-1>'):
        return
    if (sequence == '<3>'):
        return
    if (sequence == '<2>'):
        return
    if (sequence == '<Control-3>'):
        return
    if (sequence == '<Enter>'):
        return
    if (sequence == '<Leave>'):
        return
    if (sequence == '<Unmap>'):
        return
    if (sequence == '<Configure>'):
        return
    pass


def unbind_destroy(widget):
    # logging.info('tkutil: unbind  %s' % (widget))
    widget.bindings = []
    pass


# ************************************************************************
# * timer wrapper - Tkinter doesn't properly delete all commands
# ************************************************************************


def after(widget, ms, func, *args):
    print('tkutil: after(%s, %s, %s, %s)' % (widget, ms, func, args))
    if (ms == 'idle'):
        print('demo use')
        Clock.schedule_once(lambda dt: func(), 1.0)
    elif (isinstance(ms, int)):
        # print('ms: play timer (accounting)')
        # Clock.schedule_once(lambda dt: func(), float(ms)/1000.0)
        # makes not sense, drains battery!
        pass


def after_idle(widget, func, *args):
    print('tkutil: after_idle()')
    return after(widget, "idle", func, *args)


def after_cancel(t):
    print('tkutil: after_cancel()')
    pass


# ************************************************************************
# * image handling
# ************************************************************************


def makeImage(file=None, data=None, dither=None, alpha=None):
    kw = {}
    if data is None:
        assert file is not None
        kw["source"] = file
        # print('makeImage: source = %s' % file)
        # if (file=='/home/lb/PRG/Python/Kivy/pysolfc/data/images/redeal.gif'):
        #    y = self.yy
    else:
        assert data is not None
        kw["texture"] = data
        # ob das geht ?? - kommt das vor ?
        # yy = self.yy
    '''
    if 'source' in kw:
        logging.info ("makeImage: " + kw["source"])
    if 'texture' in kw:
        logging.info ("makeImage: " + str(kw["texture"]))
    '''

    return LImage(**kw)


loadImage = makeImage


def copyImage(image, x, y, width, height):

    # return Image(source=image.source)
    # return Image(texture=image.texture)
    return image


def fillTexture(texture, fill, outline=None, owidth=1):

    # logging.info("fillImage: t=%s, f=%s o=%s, w=%s" %
    #              (texture, fill, outline, owidth))
    # O.K. Kivy

    if not fill and not outline:
        return

    width = texture.width
    height = texture.height

    ox = round(owidth)
    ow = int(ox)  # muss int sein!
    if width <= 2 * ow or height <= 2 * ow:
        fill = fill or outline
        outline = None

    if not fill:
        fi0 = 0
        fi1 = 0
        fi2 = 0
        fi3 = 0
    else:
        # wir erwarten Werte als '#xxxxxx' (color Werte in Tk notation)
        # (optional mit transparenz)
        if (fill[0] == '#'):
            fill = fill[1:]
        fi0 = int(fill[0:2], 16)
        fi1 = int(fill[2:4], 16)
        fi2 = int(fill[4:6], 16)
        fi3 = 255
        if len(fill) >= 8:
            fi3 = int(fill[6:8], 16)

    if not outline:
        f = (fi0, fi1, fi2, fi3) * width
        f = (f, ) * height
        assert len(f) == height
        f = sum(f, ())
        assert len(f) == height * width * 4
        arr = array('B', f)
        texture.blit_buffer(arr, colorfmt='rgba', bufferfmt='ubyte')
    else:
        if (outline[0] == '#'):
            outline = outline[1:]
        ou0 = int(outline[0:2], 16)
        ou1 = int(outline[2:4], 16)
        ou2 = int(outline[4:6], 16)
        ou3 = 255
        if len(outline) >= 8:
            ou3 = int(outline[6:8], 16)

        l1 = (
            ou0,
            ou1,
            ou2,
            ou3,
        ) * width
        l2 = (ou0, ou1, ou2, ou3, ) * ow + (fi0, fi1, fi2, fi3, ) * \
            (width - 2 * ow) + (ou0, ou1, ou2, ou3, ) * ow
        f = (l1, ) * ow + (l2, ) * (height - 2 * ow) + (l1, ) * ow
        assert len(f) == height
        f = sum(f, ())
        assert len(f) == height * width * 4
        arr = array('B', f)
        texture.blit_buffer(arr, colorfmt='rgba', bufferfmt='ubyte')


def createImage(width, height, fill, outline=None, outwidth=1):

    logging.info("createImage: w=%s, h=%s, f=%s, o=%s, ow=%s" %
                 (width, height, fill, outline, outwidth))

    # test stellungen:
    # if (fill==None):
    #   fill = '#00cc00'
    # if (outline==None):
    #   outline = '#ff00ff'

    # if (fill is None and (outline is None or outline == '')):
    #     outline = '#fff000'
    #     outwidth = 1

    texture = Texture.create(size=(width, height), colorfmt='rgba')
    fillTexture(texture, fill, outline, outwidth)
    image = LImage(texture=texture)
    # logging.info("createImage: LImage create %s" % image)
    return image


def shadowImage(image, color='#3896f8', factor=0.3):

    logging.info("shadowImage: ")
    # TBD.
    return None
    # Kivy nicht benötigt. aber - was tut das ?
    # wurde aufgerufen, als der erste König auf die Foundation
    # gezogen wurde. (möglicherweise eine Gewonnen! - Markierung).


def markImage(image):
    logging.info("markImage: ")
    return None


def _createImageMask(texture, color):

    col = 0
    if (color == 'black'):
        col = 0
    if (color == 'white'):
        col = 255

    g = texture.pixels
    arr = array('B', g)

    for mx in range(int(len(arr) / 4)):
        m = 4 * mx
        if arr[m + 3] < 128:
            arr[m + 3] = 0
            arr[m] = arr[m + 1] = arr[m + 2] = 0
        else:
            arr[m + 3] = 32
            arr[m] = arr[m + 1] = arr[m + 2] = col

    mask = Texture.create(size=texture.size, colorfmt='rgba')
    mask.blit_buffer(arr, colorfmt='rgba', bufferfmt='ubyte')
    return mask


def _scaleTextureToSize(texture, size):

    width = size[0]
    height = size[1]

    g = texture.pixels
    ag = array('B', g)
    gw, gh = texture.size

    # print('size:',width,height)
    # print('texture size:',gw,gh)

    bb = array('B', [0 for x in range(width * height * 4)])
    # print ('bb length: ',len(bb))
    # print ('gg length: ',gw*gh*4)

    scalex = width / gw
    scaley = height / gh

    # scale, x und y offset bestimmen.

    scale = scaley
    if (scalex < scaley):
        scale = scalex

    offx = (width - gw * scale) / 2
    offy = (height - gh * scale) / 2

    # print ('scale: ',scalex,'/',scaley,' -> ',scale)
    # print ('offs: ',offx,'/',offy)

    for bi in range(height):
        bline = bi * width
        if (bi >= offy) and (bi < (height - offy)):
            # transfer
            ai = gh - int((bi - offy) / scale) - 1
            aline = ai * gw
            for bk in range(width):
                bpos = (bline + bk) * 4
                if (bk >= offx) and (bk < (width - offx)):
                    # transfer
                    ak = int((bk - offx) / scale)
                    apos = (aline + ak) * 4
                    bb[bpos] = ag[apos]
                    bb[bpos + 1] = ag[apos + 1]
                    bb[bpos + 2] = ag[apos + 2]
                    bb[bpos + 3] = ag[apos + 3]
                else:
                    # transparent
                    bb[bpos + 3] = 0
        else:
            # transparent
            for bk in range(width):
                bb[(bline + bk) * 4 + 3] = 0

    stext = Texture.create(size=(width, height), colorfmt='rgba')
    stext.blit_buffer(bb, colorfmt='rgba', bufferfmt='ubyte')
    return stext


def _pasteTextureTo(texture, totexture):

    g = texture.pixels
    ag = array('B', g)
    gw, gh = texture.size

    t = totexture.pixels
    at = array('B', t)
    tw, th = totexture.size

    if (tw != gw) or (th != gh):
        return

    for i in range(int(len(ag) / 4)):
        i4 = i * 4
        if ag[i4 + 3] > 128:
            at[i4] = ag[i4]
            at[i4 + 1] = ag[i4 + 1]
            at[i4 + 2] = ag[i4 + 2]
            at[i4 + 3] = ag[i4 + 3]

    stext = Texture.create(size=(tw, th), colorfmt='rgba')
    stext.blit_buffer(at, colorfmt='rgba', bufferfmt='ubyte')
    return stext


def createBottom(image, color='white', backfile=None):

    backfilebase = None
    if backfile is not None:
        backfilebase = os.path.basename(backfile)

    logging.info("createBottom: %s | %s" % (color, backfilebase))
    # print('createBottom:',image)

    # th = 1                              # thickness
    # size = (w - th * 2, h - th * 2)
    # original: zeichnet noch eine outline um die karte - können wir nicht.

    tmp0 = _createImageMask(image.texture, color)
    if backfile:
        tmp1 = CoreImage(backfile)
        txtre = _scaleTextureToSize(tmp1.texture, image.texture.size)
        tmp = _pasteTextureTo(txtre, tmp0)
    else:
        tmp = tmp0

    img = LImage(texture=tmp)
    img.size[0] = image.getWidth()
    img.size[1] = image.getHeight()
    return img
    '''
    im = image._pil_image
    th = 1                              # thickness
    sh = Image.new('RGBA', im.size, color)
    out = Image.composite(sh, im, im)
    w, h = im.size
    size = (w - th * 2, h - th * 2)
    tmp = Image.new('RGBA', size, color)
    tmp.putalpha(60)
    mask = out.resize(size, Image.ANTIALIAS)
    out.paste(tmp, (th, th), mask)
    if backfile:
        back = Image.open(backfile).convert('RGBA')
        w0, h0 = back.size
        w1, h1 = im.size
        a = min(float(w1) / w0, float(h1) / h0)
        a = a * 0.9
        w0, h0 = int(w0 * a), int(h0 * a)
        back = back.resize((w0, h0), Image.ANTIALIAS)
        x, y = (w1 - w0) / 2, (h1 - h0) / 2
        out.paste(back, (x, y), back)
    return PIL_Image(image=out)
    '''


# ************************************************************************
# * font utils
# ************************************************************************


def get_text_width(text, font, root=None):

    logging.info("get_text_width: %s  %s" % (text, font))

    label = CoreLabel()
    label.text = text
    label.refresh()
    return label.content_width
    # return Font(root=root, font=font).measure(text)
