# -*- coding: utf-8 -*-
#Copyright (c) 2010-2012 Walter Bender

#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:

#The above copyright notice and this permission notice shall be included in
#all copies or substantial portions of the Software.

#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#THE SOFTWARE.

import gtk
import cairo

from taconstants import (EXPANDABLE, EXPANDABLE_ARGS, OLD_NAMES, CONSTANTS,
                         STANDARD_STROKE_WIDTH, BLOCK_SCALE, BOX_COLORS,
                         GRADIENT_COLOR, EXPANDABLE_FLOW, COLORDICT)
from tapalette import (palette_blocks, block_colors, expandable_blocks,
                       content_blocks, block_names, block_primitives,
                       block_styles, special_block_colors)
from tasprite_factory import (SVG, svg_str_to_pixbuf)
import sprites

from tautils import (debug_output, error_output)


class Blocks:

    """ A class for the list of blocks and everything they share in common """

    def __init__(self, font_scale_factor=1, decimal_point='.'):
        self.list = []
        self.max_width = 400
        self.font_scale_factor = font_scale_factor
        self.decimal_point = decimal_point

    def get_block(self, i):
        if i < 0 or i > len(self.list) - 1:
            return(None)
        else:
            return(self.list[i])

    def swap(self, blk1, blk2):
        i1 = self.list.index(blk1)
        i2 = self.list.index(blk2)
        self.list[i1] = blk2
        self.list[i2] = blk1

    def length_of_list(self):
        return(len(self.list))

    def append_to_list(self, block):
        self.list.append(block)

    def remove_from_list(self, block):
        if block in self.list:
            self.list.remove(block)

    def print_list(self, block_type=None):
        for i, block in enumerate(self.list):
            if block_type is None or block_type == block.type:
                print "%d: %s" % (i, block.name)

    def set_scale(self, scale):
        for b in self.list:
            for i in range(len(b.font_size)):
                b.font_size[i] *= b.scale * scale / self.font_scale_factor
        self.font_scale_factor = scale

    def spr_to_block(self, spr):
        for b in self.list:
            if spr == b.spr:
                return b
        return None

    def get_next_block(self, block):
        if block is None:
            return None
        try:
            i = self.list.index(block)
        except ValueError:
            return None
        i += 1
        if i < len(self.list):
            return self.list[i]
        else:
            return self.list[0]

    def get_next_block_of_same_type(self, block):
        if block is None:
            return None
        type = block.type
        i = 0
        while block is not None:
            block = self.get_next_block(block)
            if block is not None:
                if block.type == type:
                    return block
            if i == len(self.list):
                break
            i += 1
        return None

    def get_similar_blocks(self, block_type, name):
        block_list = []
        if isinstance(name, str):
            for block in self.list:
                if block.type == block_type and block.name == name:
                    block_list.append(block)
        else:
            for block in self.list:
                if block.type == block_type and block.name in name:
                    block_list.append(block)
        return block_list


class Block:
    """ A class for the individual blocks
    
    Attributes:
    docks -- a list of docks, i.e. connection points where other blocks
        could be attached. Each dock is a list of the form
        [type_of_dock, flow_is_in, x, y, parenthesis]
        with the last element being optional.
        type_of_dock may be one of the following strings:
            flow -- connect to the previous or next block ('slot' or 'tab')
            bool, media, number, string -- argument slot ('innie') or
                return value ('outie') of the given kind
            unavailable -- nothing can be attached here ('cap' or 'tail')
        flow_is_in is True if the flow is into the block, or False for out.
        x and y are coodinates for positioning the block on the dock.
        parenthesis is only used with arguments and ensures a known order
            of arguments for arithmetic and logical operations.
    connections -- a list of blocks that are attached to this one (or that
        this one is attached to). This list corresponds to the docks list
        as it uses the same indices. Slots where nothing is attached are
        None on this list.
    primitive -- a callable that is called when the block is executed
    type -- type of the block:
        block -- block that is part of the user's program
        proto -- block on a palette, used to generate other blocks
        trash -- block in the trash """

    def __init__(self, block_list, sprite_list, name, x, y, type='block',
                 values=[], scale=BLOCK_SCALE[0],
                 colors=['#A0A0A0', '#808080']):

        self.block_list = block_list
        self.spr = None
        self.shapes = [None, None]
        self.name = name
        self.colors = colors
        self._custom_colors = False
        self.scale = scale
        self.docks = None
        self.connections = None
        self.status = None
        self.values = []
        self.primitive = None
        self.type = type
        self.dx = 0
        self.ex = 0
        self.ey = 0
        self.ey2 = 0
        self._ei = 0
        self.font_size = [6.0, 4.5]
        self._image = None
        self._visible = True
        self.unknown = False  # Block is of unknown style

        self.block_methods = {
            'basic-style': self._make_basic_style,
            'blank-style': self._make_blank_style,
            'basic-style-head': self._make_basic_style_head,
            'basic-style-head-1arg': self._make_basic_style_head_1arg,
            'basic-style-tail': self._make_basic_style_tail,
            'basic-style-extended': [self._make_basic_style, 16, 16],
            'basic-style-extended-vertical': [self._make_basic_style, 0, 4],
            'basic-style-1arg': self._make_basic_style_1arg,
            'basic-style-2arg': self._make_basic_style_2arg,
            'basic-style-3arg': self._make_basic_style_3arg,
            'basic-style-var-arg': self._make_basic_style_var_arg,
            'bullet-style': self._make_bullet_style,
            'box-style': self._make_box_style,
            'box-style-media': self._make_media_style,
            'number-style': self._make_number_style,
            'number-style-block': self._make_number_style_block,
            'number-style-porch': self._make_number_style_porch,
            'number-style-1arg': self._make_number_style_1arg,
            'number-style-1strarg': self._make_number_style_1strarg,
            'number-style-var-arg': self._make_number_style_var_arg,
            'compare-style': self._make_compare_style,
            'compare-porch-style': self._make_compare_porch_style,
            'boolean-style': self._make_boolean_style,
            'not-style': self._make_not_style,
            'boolean-block-style': self._make_boolean_block_style,
            'boolean-1arg-block-style': self._make_boolean_1arg_block_style,
            'clamp-style': self._make_clamp_style,
            'clamp-style-collapsible': self._make_clamp_style_collapsible,
            'clamp-style-collapsed': self._make_clamp_style_collapsed,
            'clamp-style-1arg': self._make_clamp_style_1arg,
            'clamp-style-boolean': self._make_clamp_style_boolean,
            'clamp-style-else': self._make_clamp_style_else,
            'flow-style-tail': self._make_flow_style_tail,
            'portfolio-style-2x2': self._make_portfolio_style_2x2,
            'portfolio-style-1x1': self._make_portfolio_style_1x1,
            'portfolio-style-2x1': self._make_portfolio_style_2x1,
            'portfolio-style-1x2': self._make_portfolio_style_1x2}

        if self.name in OLD_NAMES:
            self.name = OLD_NAMES[self.name]

        for i in range(len(self.font_size)):
            self.font_size[i] *= self.scale * \
                self.block_list.font_scale_factor

        for v in (values):
            self.values.append(v)

        # If there is already a block with the same name, reuse it
        copy_block = None
        if self.cloneable():
            for b in self.block_list.list:
                if b.scale == self.scale and b.name == self.name:
                    copy_block = b
                    break
        self._new_block_from_factory(sprite_list, x, y, copy_block)

        if name in block_primitives:
            self.primitive = block_primitives[self.name]

        self.block_list.append_to_list(self)

    def get_visibility(self):
        ''' Should block be visible on the palette? '''
        return self._visible

    def set_visibility(self, state):
        ''' Should block be visible? '''
        self._visible = state
        if self._visible:
            self.spr.restore()
        else:
            self.spr.hide()

    def expandable(self):
        """ Can this block be expanded? """
        if self.name in EXPANDABLE:
            return True
        if self.name in expandable_blocks:
            return True
        if self.name in EXPANDABLE_ARGS:
            return True
        if self.name in EXPANDABLE_FLOW:
            return True
        return False

    def cloneable(self):
        """ Is it safe to clone this block? """
        if self.expandable():
            return False
        if self.name in block_styles['box-style']:
            return False
        if self.name in ['storein', 'box', 'string',
                         # Deprecated blocks
                         'sandwichtop', 'sandwichtop_no_label']:
            return False
        return True

    def highlight(self):
        """ We may want to highlight a block... """
        if self.spr is not None and self.status is not 'collapsed':
            self.spr.set_shape(self.shapes[1])

    def unhighlight(self):
        """ Or unhighlight it. """
        if self.spr is not None and self.status is not 'collapsed':
            self.spr.set_shape(self.shapes[0])

    def resize(self):
        """ We need to resize some blocks on the fly so the labels fit. """
        if self.spr is None:
            return
        dx = (self.spr.label_width() - self.spr.label_safe_width()) / \
            self.scale
        if self.dx + dx >= self.block_list.max_width and \
           self.name == 'string':
            self.dx = self.block_list.max_width
            self.refresh()
            self._set_labels(0, self.spr.labels[0])
        elif dx != 0:
            self.dx += dx
            if self.dx < 0:
                self.dx = 0
            self.refresh()

    def set_image(self, image, x, y):
        """ Some blocks get a skin. """
        if self.spr is None:
            return
        self._image = image
        self.spr.set_image(image, 1, x, y)

    def scale_image(self, x, y, w, h):
        """ The skin might need scaling. """
        if self.spr is None:
            return
        if self._image is not None:
            tmp = self._image.scale_simple(w, h, gtk.gdk.INTERP_NEAREST)
            self.spr.set_image(tmp, 1, x, y)

    def rescale(self, scale):
        """ We may want to rescale blocks as well. """
        if self.spr is None:
            return
        for i in range(len(self.font_size)):
            self.font_size[i] /= self.scale
        self.scale = scale
        for i in range(len(self.font_size)):
            self.font_size[i] *= self.scale
        self.svg.set_scale(self.scale)
        self.refresh()
        self.spr.inval()

    def set_colors(self, colors):
        self.colors = colors[:]
        self._custom_colors = True
        self.refresh()

    def refresh(self):
        if self.spr is None:
            return
        self._make_block(self.svg)
        self._set_margins()
        self._set_label_attributes()
        self.spr.set_shape(self.shapes[0])

    def add_arg(self, keep_expanding=True):
        """ We may want to add additional slots for arguments ("innies"). """
        if self.spr is None:
            return
        h = self.svg.get_height()
        self._ei += 1
        if self.type == 'block' and keep_expanding:
            self.svg.set_show(True)
        else:
            self.svg.set_show(False)
        self.refresh()
        return self.svg.get_height() - h

    def expand_in_y(self, dy):
        """ We may want to grow a block vertically. """
        if self.spr is None:
            return
        self.ey += dy
        if self.type == 'block':
            if self.ey > 0:
                self.svg.set_hide(True)
            else:
                self.svg.set_hide(False)
            self.svg.set_show(True)
        else:
            self.svg.set_hide(False)
            self.svg.set_show(False)
        self.refresh()

    def expand_in_y2(self, dy):
        """ We may want to grow a block vertically. """
        if self.spr is None:
            return
        self.ey2 += dy
        if self.type == 'block':
            if self.ey2 > 0:
                self.svg.set_hide(True)
            else:
                self.svg.set_hide(False)
            self.svg.set_show(True)
        else:
            self.svg.set_hide(False)
            self.svg.set_show(False)
        self.refresh()

    def expand_in_x(self, dx):
        """ We may want to grow a block horizontally. """
        if self.spr is None:
            return
        self.ex += dx
        if self.type == 'block':
            self.svg.set_hide(True)
            self.svg.set_show(True)
        else:
            self.svg.set_hide(False)
            self.svg.set_show(False)
        self.refresh()

    def contract_in_y(self, dy):
        """ We may want to shrink a block veritcally. """
        if self.spr is None:
            return
        self.ey -= dy
        if self.ey < 0:
            self.ey = 0
        if self.type == 'block':
            if self.ey > 0:
                self.svg.set_hide(True)
            else:
                self.svg.set_hide(False)
            self.svg.set_show(True)
        else:
            self.svg.set_hide(False)
            self.svg.set_show(False)
        self.refresh()

    def contract_in_x(self, dx):
        """ We may want to shrink a block horizontally. """
        if self.spr is None:
            return
        self.ex -= dx
        if self.ex < 0:
            self.ex = 0
        if self.type == 'block':
            if self.ex > 0:
                self.svg.set_hide(True)
            else:
                self.svg.set_hide(False)
            self.svg.set_show(True)
        else:
            self.svg.set_hide(False)
            self.svg.set_show(False)
        self.refresh()

    def reset_x(self):
        if self.spr is None:
            return 0
        dx = -self.ex
        self.ex = 0
        self.svg.set_hide(False)
        if self.type == 'block':
            self.svg.set_show(True)
        else:
            self.svg.set_show(False)
        self.refresh()
        return dx

    def reset_y(self):
        if self.spr is None:
            return 0
        dy = -self.ey
        self.ey = 0
        self.svg.set_hide(False)
        if self.type == 'block':
            self.svg.set_show(True)
        else:  # 'proto'
            self.svg.set_show(False)
        self.refresh()
        return dy

    def reset_y2(self):
        if self.spr is None:
            return 0
        dy = -self.ey2
        self.ey2 = 0
        self.svg.set_hide(False)
        if self.type == 'block':
            self.svg.set_show(True)
        else:  # 'proto'
            self.svg.set_show(False)
        self.refresh()
        return dy

    def get_expand_x_y(self):
        if self.spr is None:
            return(0, 0)
        return (self.ex, self.ey, self.ey2)

    def _new_block_from_factory(self, sprite_list, x, y, copy_block=None):
        self.svg = SVG()
        self.svg.set_scale(self.scale)
        self.svg.set_innie([False])
        self.svg.set_outie(False)
        self.svg.set_tab(True)
        self.svg.set_slot(True)

        if copy_block is not None:
            self._left = copy_block._left
            self._top = copy_block._top
            self._right = copy_block._right
            self._bottom = copy_block._bottom
            self.dx = copy_block.dx
            self.ex = copy_block.ex
            self.ey = copy_block.ey
            self.width = copy_block.width
            self.height = copy_block.height
            self.shapes[0] = copy_block.shapes[0]
            if sprite_list is not None:
                self.spr = sprites.Sprite(sprite_list, x, y, self.shapes[0])
                self.spr._margins = copy_block.spr._margins[:]
            if len(copy_block.shapes) > 1:
                self.shapes[1] = copy_block.shapes[1]
            self.docks = copy_block.docks[:]
        else:
            if self.expandable() and self.type == 'block':
                self.svg.set_show(True)

            self._make_block(self.svg)

            if sprite_list is not None:
                self.spr = sprites.Sprite(sprite_list, x, y, self.shapes[0])
                self._set_margins()

        self._set_label_attributes()
        if (self.name == 'number' or self.name == 'string') and \
                len(self.values) > 0:
            for i, v in enumerate(self.values):
                if v is not None:
                    if self.name == 'number':
                        self._set_labels(i,
                           str(v).replace('.', self.block_list.decimal_point))
                    else:
                        self._set_labels(i, str(v))
        elif self.type == 'block' and self.name in CONSTANTS:
            if CONSTANTS[self.name] in COLORDICT:
                v = COLORDICT[CONSTANTS[self.name]][0]
                if v is None:
                    v = COLORDICT[CONSTANTS[self.name]][1]
            else:
                v = CONSTANTS[self.name]
            self._set_labels(0, block_names[self.name][0] + ' = ' + str(v))

        elif self.name in block_names:
            for i, n in enumerate(block_names[self.name]):
                self._set_labels(i, n)

        if copy_block is None and self.spr is not None:
            if self.spr.label_width() > self.spr.label_safe_width():
                self.resize()

    def _set_margins(self):
        if self.spr is None:
            return
        self.spr.set_margins(self.svg.margins[0], self.svg.margins[1],
                             self.svg.margins[2], self.svg.margins[3])

    def _set_label_attributes(self):
        if self.spr is None:
            return
        if isinstance(self.name, unicode):
            self.name = self.name.encode('utf-8')
        if self.name in content_blocks:
            n = len(self.values)
            if n == 0:
                n = 1  # Force a scale to be set, even if there is no value.
        else:
            if self.name in block_names:
                n = len(block_names[self.name])
            else:
                debug_output('WARNING: unknown block name %s' % (self.name))
                n = 0
        for i in range(n):
            if i > 0:
                size = int(self.font_size[1] + 0.5)
            else:
                size = int(self.font_size[0] + 0.5)
            if self.name in block_styles['compare-porch-style']:
                self.spr.set_label_attributes(size, True, 'center', 'bottom',
                                              i=i)
            elif self.name in block_styles['number-style-porch']:
                self.spr.set_label_attributes(size, True, 'right', 'bottom',
                                              i=i)
            elif self.name in EXPANDABLE_FLOW:
                self._calc_moving_labels(i)
            elif self.name == 'string':
                self.spr.set_label_attributes(size, False, 'center', 'middle')
            elif i == 1:  # top
                self.spr.set_label_attributes(size, True, 'right', 'top', i=i)
            elif i > 0 and i == n - 1:  # bottom
                self.spr.set_label_attributes(size, True, 'right', 'bottom',
                                              i=i)
            elif i > 0:
                self.spr.set_label_attributes(size, True, 'right', 'middle',
                                              i=i)
            else:
                self.spr.set_label_attributes(size, True, 'center', 'middle',
                                              i=i)

    def _calc_moving_labels(self, i):
        ''' Some labels move as blocks change shape/size '''
        if self.name in block_styles['clamp-style'] or \
           self.name in block_styles['clamp-style-collapsible']:
            y = int((self.docks[0][3] + self.docks[1][3]) / 3.3)
            self.spr.set_label_attributes(int(self.font_size[0] + 0.5),
                                          True, 'right', y_pos=y, i=0)
        elif self.name in block_styles['clamp-style-1arg']:
            y = self.docks[1][3] - int(int(self.font_size[0] * 1.3))
            self.spr.set_label_attributes(int(self.font_size[0] + 0.5),
                                          True, 'right', y_pos=y, i=0)
        elif self.name in block_styles['clamp-style-boolean']:
            y = self.docks[1][3] - int(int(self.font_size[0] * 1.3))
            self.spr.set_label_attributes(int(self.font_size[0] + 0.5),
                                          True, 'right', y_pos=y, i=0)
            y = self.docks[2][3] - int(int(self.font_size[0] * 1.9))
            self.spr.set_label_attributes(int(self.font_size[1] + 0.5),
                                          True, 'right', y_pos=y, i=1)
        elif self.name in block_styles['clamp-style-else']:
            y = self.docks[1][3] - int(int(self.font_size[0] * 1.3))
            self.spr.set_label_attributes(int(self.font_size[0] + 0.5),
                                          True, 'right', y_pos=y, i=0)
            y = self.docks[2][3] - int(int(self.font_size[0] * 1.9))
            self.spr.set_label_attributes(int(self.font_size[1] + 0.5),
                                          True, 'right', y_pos=y, i=1)
            y = self.docks[3][3] - int(int(self.font_size[0] * 1.45))
            self.spr.set_label_attributes(int(self.font_size[1] + 0.5),
                                          True, 'right', y_pos=y, i=2)


    def _set_labels(self, i, label):
        if self.spr is None:
            return
        self.spr.set_label(label, i)

    def _make_block(self, svg):
        self._left = 0
        self._top = 0
        self._right = 0
        self._bottom = 0
        self.svg.set_stroke_width(STANDARD_STROKE_WIDTH)
        self.svg.clear_docks()
        if isinstance(self.name, unicode):
            self.name = self.name.encode('utf-8')
        for k in block_styles.keys():
            if self.name in block_styles[k]:
                if isinstance(self.block_methods[k], list):
                    self.block_methods[k][0](svg, self.block_methods[k][1],
                                             self.block_methods[k][2])
                else:
                    self.block_methods[k](svg)
                return
        error_output('ERROR: block type not found %s' % (self.name))
        self.block_methods['blank-style'](svg)
        self.unknown = True

    def _set_colors(self, svg):
        if self._custom_colors:
            self.svg.set_colors(self.colors)
            return
        if self.name in BOX_COLORS:
            self.colors = BOX_COLORS[self.name]
        elif self.name in special_block_colors:
            self.colors = special_block_colors[self.name]
        else:
            for p in range(len(palette_blocks)):
                if self.name in palette_blocks[p]:
                    self.colors = block_colors[p]
        self.svg.set_colors(self.colors)

    def _make_basic_style(self, svg, extend_x=0, extend_y=0):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                       self.svg.docks[0][1]], ['flow',
                       False, self.svg.docks[1][0], self.svg.docks[1][1]]]

    def _make_blank_style(self, svg, extend_x=0, extend_y=0):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y)
        self.svg.set_slot(False)
        self.svg.set_tab(False)
        self.svg.set_tail(False)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = []

    def _make_basic_style_head(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        self.svg.set_slot(False)
        self.svg.set_cap(True)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['unavailable', False, 0, 0],
                      ['flow', False, self.svg.docks[0][0],
                                      self.svg.docks[0][1]]]

    def _make_basic_style_head_1arg(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        self.svg.set_innie([True])
        self.svg.set_slot(False)
        self.svg.set_cap(True)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['unavailable', False, 0, 0],
                      ['string', False, self.svg.docks[0][0],
                                        self.svg.docks[0][1]],
                      ['flow', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]]]

    def _make_basic_style_tail(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        self.svg.set_tab(False)
        self.svg.set_tail(True)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['unavailable', False, 0, 0]]

    def _make_basic_style_1arg(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        self.svg.set_innie([True])
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]],
                      ['flow', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1]]]

    def _make_basic_style_2arg(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        self.svg.set_innie([True, True])
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]],
                      ['number', False, self.svg.docks[2][0],
                                        self.svg.docks[2][1]],
                      ['flow', False, self.svg.docks[3][0],
                                      self.svg.docks[3][1]]]

    def _make_basic_style_3arg(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        self.svg.set_innie([True, True, True])
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]],
                      ['number', False, self.svg.docks[2][0],
                                        self.svg.docks[2][1]],
                      ['number', False, self.svg.docks[3][0],
                                        self.svg.docks[3][1]],
                      ['flow', False, self.svg.docks[4][0],
                                      self.svg.docks[4][1]]]

    def _make_basic_style_var_arg(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        innie = [True]
        for i in range(self._ei):
            innie.append(True)
        self.svg.set_innie(innie)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]]]
        for i in range(self._ei):
            self.docks.append(['number', False, self.svg.docks[i + 2][0],
                                                self.svg.docks[i + 2][1]])
        self.docks.append(['flow', False, self.svg.docks[self._ei + 2][0],
                                      self.svg.docks[self._ei + 2][1]])

    def _make_bullet_style(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        innie = [True, True]
        for i in range(self._ei):
            innie.append(True)
        self.svg.set_innie(innie)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['string', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1], '['],
                      ['string', False, self.svg.docks[2][0],
                                        self.svg.docks[2][1]]]
        for i in range(self._ei):
            self.docks.append(['string', False, self.svg.docks[i + 3][0],
                                                self.svg.docks[i + 3][1]])
        self.docks.append(['flow', False, self.svg.docks[self._ei + 3][0],
                                      self.svg.docks[self._ei + 3][1], ']'])

    def _make_box_style(self, svg):
        self.svg.expand(60 + self.dx + self.ex, self.ey)
        self._make_block_graphics(svg, self.svg.basic_box)
        self.docks = [['number', True, self.svg.docks[0][0],
                                       self.svg.docks[0][1]],
                      ['unavailable', False, 0, 0]]

    def _make_media_style(self, svg):
        self.svg.expand(40 + self.dx + self.ex, 10 + self.ey)
        self._make_block_graphics(svg, self.svg.basic_box)
        self.docks = [['number', True, self.svg.docks[0][0],
                                       self.svg.docks[0][1]],
                      ['unavailable', False, 0, 0]]

    def _make_number_style(self, svg):
        self.svg.expand(self.dx + self.ex, self.ey)
        self.svg.set_innie([True, True])
        self.svg.set_outie(True)
        self.svg.set_tab(False)
        self.svg.set_slot(False)
        self._make_block_graphics(svg, self.svg.basic_block)
        """
        NOTE: The "outie" is added last, so the dock order in NUMBER_STYLE
              blocks needs to be modified.
        """
        self.docks = [['number', True, self.svg.docks[2][0],
                                       self.svg.docks[2][1]],
                      ['number', False, self.svg.docks[0][0],
                                        self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]]]

    def _make_number_style_var_arg(self, svg):
        self.svg.expand(self.dx + self.ex, self.ey)
        innie = [True]
        for i in range(self._ei + 1):
            innie.append(True)
        self.svg.set_innie(innie)
        self.svg.set_outie(True)
        self.svg.set_tab(False)
        self.svg.set_slot(False)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['number', True, self.svg.docks[2 + self._ei][0],
                                       self.svg.docks[2 + self._ei][1]],
                      ['number', False, self.svg.docks[0][0],
                                        self.svg.docks[0][1]]]
        for i in range(self._ei + 1):
            self.docks.append(['number', False, self.svg.docks[i + 1][0],
                                                self.svg.docks[i + 1][1]])
        self.docks.append(['unavailable', False, 0, 0])

    def _make_number_style_block(self, svg):
        self.svg.expand(self.dx + self.ex, self.ey)
        self.svg.set_innie([True, True])
        self.svg.set_outie(True)
        self.svg.set_tab(False)
        self.svg.set_slot(False)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['number', True, self.svg.docks[2][0],
                                       self.svg.docks[2][1], '('],
                      ['number', False, self.svg.docks[0][0],
                                        self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]],
                      ['unavailable', False, 0, 0, ')']]

    def _make_number_style_1arg(self, svg):
        self.svg.expand(self.dx + self.ex, self.ey)
        self.svg.set_innie([True])
        self.svg.set_outie(True)
        self.svg.set_tab(False)
        self.svg.set_slot(False)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['number', True, self.svg.docks[1][0],
                                       self.svg.docks[1][1]],
                      ['number', False, self.svg.docks[0][0],
                                        self.svg.docks[0][1]]]

    def _make_number_style_1strarg(self, svg):
        self.svg.expand(self.dx + self.ex, self.ey)
        self.svg.set_innie([True])
        self.svg.set_outie(True)
        self.svg.set_tab(False)
        self.svg.set_slot(False)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['number', True, self.svg.docks[1][0],
                                       self.svg.docks[1][1]],
                      ['string', False, self.svg.docks[0][0],
                                        self.svg.docks[0][1]],
                      ['unavailable', False, 0, 0]]

    def _make_number_style_porch(self, svg):
        self.svg.expand(self.dx + self.ex, self.ey)
        self.svg.set_innie([True, True])
        self.svg.set_outie(True)
        self.svg.set_tab(False)
        self.svg.set_slot(False)
        self.svg.set_porch(True)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['number', True, self.svg.docks[2][0],
                                       self.svg.docks[2][1]],
                      ['number', False, self.svg.docks[0][0],
                                        self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]]]

    def _make_compare_style(self, svg):
        self.svg.expand(15 + self.dx + self.ex, self.ey)
        self._make_block_graphics(svg, self.svg.boolean_compare)
        self.docks = [['bool', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1], '('],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]],
                      ['number', False, self.svg.docks[2][0],
                                        self.svg.docks[2][1]],
                      ['unavailable', False, 0, 0, ')']]

    def _make_compare_porch_style(self, svg):
        self.svg.set_porch(True)
        self._make_compare_style(svg)

    def _make_boolean_style(self, svg):
        self.svg.expand(15 + self.dx + self.ex, self.ey)
        self._make_block_graphics(svg, self.svg.boolean_and_or)
        self.docks = [['bool', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['bool', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]],
                      ['bool', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1]]]

    def _make_not_style(self, svg):
        self.svg.expand(15 + self.dx + self.ex, self.ey)
        self._make_block_graphics(svg, self.svg.boolean_not, arg=False)
        self.docks = [['bool', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['bool', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]]]

    def _make_boolean_block_style(self, svg):
        self.svg.expand(15 + self.dx + self.ex, self.ey)
        self._make_block_graphics(svg, self.svg.boolean_not, arg=True)
        self.docks = [['bool', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['unavailable', False, 0, 0]]

    def _make_boolean_1arg_block_style(self, svg):
        self.svg.expand(15 + self.dx + self.ex, self.ey)
        self.svg.set_innie([True])
        self._make_block_graphics(svg, self.svg.boolean_not, arg=True)
        self.docks = [['bool', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]]]

    def _make_clamp_style(self, svg, extend_x=0, extend_y=4):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.second_clamp(False)
        self._make_block_graphics(svg, self.svg.clamp)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['flow', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1], '['],
                      # Skip bottom of clamp
                      ['flow', False, self.svg.docks[3][0],
                                      self.svg.docks[3][1], ']']]

    def _make_clamp_style_collapsible(self, svg, extend_x=0, extend_y=4):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_collapsible(True)
        self.svg.second_clamp(False)
        self._make_block_graphics(svg, self.svg.clamp)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['flow', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1], '['],
                      # Skip bottom of clamp
                      ['flow', False, self.svg.docks[3][0],
                                      self.svg.docks[3][1], ']']]

    def _make_clamp_style_collapsed(self, svg, extend_x=0, extend_y=4):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y)
        self.svg.set_show(True)
        self._make_block_graphics(svg, self.svg.basic_block)
        self.docks = [['flow', True, self.svg.docks[0][0],
                       self.svg.docks[0][1]],
                      ['unavailable', True, 0, self.svg.docks[0][1] + 10, '['],
                      ['flow', False, self.svg.docks[1][0],
                       self.svg.docks[1][1], ']']]

    def _make_clamp_style_1arg(self, svg, extend_x=0, extend_y=4):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_innie([True])
        self.svg.second_clamp(False)
        self._make_block_graphics(svg, self.svg.clamp)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['number', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]],
                      ['flow', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1], '['],
                      # Skip bottom of clamp
                      ['flow', False, self.svg.docks[4][0],
                                      self.svg.docks[4][1], ']']]

    def _make_clamp_style_boolean(self, svg, extend_x=0, extend_y=4):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_boolean(True)
        self.svg.second_clamp(False)
        self._make_block_graphics(svg, self.svg.clamp)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['bool', False, self.svg.docks[1][0],
                                        self.svg.docks[1][1]],
                      ['flow', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1], '['],
                      # Skip bottom of clamp
                      ['flow', False, self.svg.docks[4][0],
                                      self.svg.docks[4][1], ']']]

    def _make_clamp_style_else(self, svg, extend_x=0, extend_y=4):
        self.svg.expand(self.dx + self.ex + extend_x, self.ey + extend_y,
                        self.dx + self.ex + extend_x, self.ey2 + extend_y)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_boolean(True)
        self.svg.second_clamp(True)
        self._make_block_graphics(svg, self.svg.clamp)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['bool', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]],
                      ['flow', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1], '['],
                      # Skip bottom of clamp
                      ['flow', False, self.svg.docks[4][0],
                                      self.svg.docks[4][1], ']['],
                      # Skip bottom of clamp
                      ['flow', False, self.svg.docks[6][0],
                                      self.svg.docks[6][1], ']']]

    def _make_flow_style_tail(self, svg):
        self.svg.expand(10 + self.dx + self.ex, self.ey)
        self.svg.set_slot(True)
        self.svg.set_tab(False)
        self._make_block_graphics(svg, self.svg.basic_flow)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['flow', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]]]

    # Depreciated block styles

    def _make_portfolio_style_2x2(self, svg):
        self.svg.expand(30 + self.dx + self.ex, 10 + self.ey)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_innie([True, True, False, True])
        self._make_block_graphics(svg, self.svg.portfolio)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['string', False, self.svg.docks[6][0],
                                      self.svg.docks[6][1]],
                      ['media', False, self.svg.docks[5][0],
                                      self.svg.docks[5][1]],
                      ['media', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]],
                      ['media', False, self.svg.docks[4][0],
                                      self.svg.docks[4][1]],
                      ['media', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1]],
                      ['flow', False, self.svg.docks[3][0],
                                      self.svg.docks[3][1]]]

    def _make_portfolio_style_2x1(self, svg):
        self.svg.expand(30 + self.dx + self.ex, 10 + self.ey)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_innie([True, True])
        self._make_block_graphics(svg, self.svg.portfolio)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['string', False, self.svg.docks[4][0],
                                      self.svg.docks[4][1]],
                      ['media', False, self.svg.docks[3][0],
                                      self.svg.docks[3][1]],
                      ['media', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]],
                      ['flow', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1]]]

    def _make_portfolio_style_1x2(self, svg):
        self.svg.expand(30 + self.dx + self.ex, 15 + self.ey)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_innie([True, True, False, True])
        self.svg.set_draw_innies(False)
        self._make_block_graphics(svg, self.svg.portfolio)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['string', False, self.svg.docks[4][0],
                                      self.svg.docks[4][1]],
                      ['media', False, self.svg.docks[3][0],
                                      self.svg.docks[3][1]],
                      ['media', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1]],
                      ['flow', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]]]

    def _make_portfolio_style_1x1(self, svg):
        self.svg.expand(30 + self.dx + self.ex, 15 + self.ey)
        self.svg.set_slot(True)
        self.svg.set_tab(True)
        self.svg.set_innie([True, True])
        self.svg.set_draw_innies(False)
        self._make_block_graphics(svg, self.svg.portfolio)
        self.docks = [['flow', True, self.svg.docks[0][0],
                                     self.svg.docks[0][1]],
                      ['string', False, self.svg.docks[3][0],
                                      self.svg.docks[3][1]],
                      ['media', False, self.svg.docks[2][0],
                                      self.svg.docks[2][1]],
                      ['flow', False, self.svg.docks[1][0],
                                      self.svg.docks[1][1]]]

    def _make_block_graphics(self, svg, function, arg=None):
        self._set_colors(svg)
        self.svg.set_gradient(True, GRADIENT_COLOR)
        if arg is None:
            pixbuf = svg_str_to_pixbuf(function())
        else:
            pixbuf = svg_str_to_pixbuf(function(arg))
        self.width = self.svg.get_width()
        self.height = self.svg.get_height()
        self.shapes[0] = _pixbuf_to_cairo_surface(pixbuf,
                                                  self.width, self.height)
        self.svg.set_gradient(False)
        if arg is None:
            pixbuf = svg_str_to_pixbuf(function())
        else:
            pixbuf = svg_str_to_pixbuf(function(arg))
        self.shapes[1] = _pixbuf_to_cairo_surface(pixbuf,
                                                  self.width, self.height)

def _pixbuf_to_cairo_surface(image, width, height):
    surface = cairo.ImageSurface(
        cairo.FORMAT_ARGB32, int(width), int(height))
    context = cairo.Context(surface)
    context = gtk.gdk.CairoContext(context)
    context.set_source_pixbuf(image, 0, 0)
    context.rectangle(0, 0, int(width), int(height))
    context.fill()
    return surface