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# Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
#
# 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; version 2 of the
# License.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301 USA
import cairo
import cairo_utils
from cairo_utils import Context, ImageSurface, Pattern
from cairo_utils import VBoxNode, TextRectangle, intersect_lines, draw_arrow_head
class TreeNode(VBoxNode):
def __init__(self, parent, name, title, data):
VBoxNode.__init__(self)
self.padding = (0, 0, 0, 0)
self.expand_to_fill = False
self.name = name
self.parent = parent
self.data = data
self.children = []
self.is_step_list = False
if title is not None:
self.content = TextRectangle(title)
self.content.set_fill_color(0.83137254901960789, 0.92941176470588238, 0.99215686274509807, 1)
self.items.append(self.content)
self.extra_bottom_space = 0
def __repr__(self):
return "<node %s>"%self.content.text
def process(self):
for ch in self.children:
ch.process()
self.calc()
def render(self, c):
VBoxNode.render(self, c)
self.render_shadow(c)
def minimal_space_required_space_for_ref_to(self, c, ch):
return 0
def layout(self, c, x, y):
self.calc(c)
self.pos = (x, y)
class TreeStepNode(TreeNode):
def __init__(self, parent, name, title, data):
TreeNode.__init__(self, parent, name, title, data)
self.set_fill_color(0.5, 0.7, 0.5, 1)
self.set_color(1, 1, 1, 1)
class StepListNode(TreeNode):
def __init__(self, parent, steps):
TreeNode.__init__(self, parent, "steps", None, steps)
def layout(self, c, x, y):
self.calc(c)
for ch in self.children:
ch.layout(c, x, y)
y += ch.size[1] + 40
def render(self, c):
for ch in self.children:
ch.render(c)
def process(self):
for step in self.data:
name, value = step.items()[0]
print "#"*20,name, value
node = TreeStepNode(self, name, name, value)
self.children.append(node)
class TreeRootNode(StepListNode):
def __init__(self, steps):
StepListNode.__init__(self, None, steps["steps"])
class TableDependency(TreeNode):
def __init__(self, parent, data):
title = "%s.%s" % (data["database"], data["table"])
TreeNode.__init__(self, parent, "TableDependency", title, data)
# Layouter
class TreeLayouter:
def __init__(self, root):
self.root = root
self.yspacing = 30
self.xspacing = 50
def layout(self, ctx, node, x = 0, y = 0):
t, l, b, r = node.padding
w, h = node.size
twidth = 0
theight = 0
# calc total height occupied by children
if node.is_step_list:
for step in node.children:
step.pos = x, y
if node.name == "join_optimization":
print "put ", step.name, x + self.xspacing
if step.is_step_list:
sw, sh = self.layout(ctx, step, x, y)
else:
sw, sh = self.layout_tree(ctx, step, x + step.size[0] + self.xspacing, y)
step.gsize = (sw, sh)
y += max(step.size[1], sh) + self.yspacing
theight += sh + self.yspacing
twidth = max(sw, twidth)
twidth = max(w, twidth)
else:
twidth, theight = self.layout_tree(ctx, node, x, y)
theight += h
return twidth, theight
def layout_tree(self, ctx, node, x, y):
w, h = node.size
twidth = 0
theight = h
xx = x
for ch in node.children:
sw, sh = self.layout_tree(ctx, ch, xx, y + h + self.yspacing)
xx += sw + self.xspacing
twidth += sw
theight = max(sh, theight)
node.pos = x, y
return max(twidth, w), theight + self.yspacing
def adjust_child_layout(self, node, offset):
for ch in node.children:
cx, cy = ch.pos
ch.pos = int(cx + offset), int(cy)
self.adjust_child_layout(ch, offset)
def get_total_size(self, ctx):
def calc_all(c, node):
node.calc(c)
for ch in node.children:
calc_all(c, ch)
calc_all(ctx, self.root)
return self.layout(ctx, self.root, 0, 0)
def render(self, c, x, y):
def calc_all(c, node):
node.calc(c)
for ch in node.children:
calc_all(c, ch)
calc_all(c, self.root)
self.layout(c, self.root, x, y)
self.do_render(c, self.root)
self.do_render_lines(c, self.root)
def do_render_lines(self, c, node):
if node.is_step_list:
if node.children:
prev = node.children[0]
node.stroke_line_from_node(c, prev)
for ch in node.children[1:]:
prev.stroke_line_from_node(c, ch)
prev = ch
else:
for ch in node.children:
ch.stroke_line_from_node(c, node)
for ch in node.children:
self.do_render_lines(c, ch)
def do_render(self, c, node):
node.render(c)
for ch in node.children:
self.do_render(c, ch)
def decode_json(text):
return eval(text, {"false":False, "true":True})
def process_node(parent, name, data):
if type(data) is not dict or name in ["depends_on_map_bits"]:
return None
oper = name
node = TreeNode(parent, name, oper, data)
return node
def tree_from_json(parent, name, json):
node = process_node(parent, name, json)
if not node:
return None
for key, value in json.items():
if type(value) is dict:
ch = tree_from_json(node, key, value)
if ch:
node.children.append(ch)
elif type(value) is list:
if key == "steps":
previous = None
node.is_step_list = True
for item in value:
ch = tree_from_json(node, "step", item)
if ch.children: # remove useless intermediate step node
ch = ch.children[0]
node.children.append(ch)
ch.set_fill_color(0.8, 0.5, 0.5, 1)
ch.previous = previous
if previous:
previous.next = ch
previous = ch
if key == "table_dependencies":
interm = TreeNode(node, key, key, value)
node.children.append(interm)
for item in value:
ch = TableDependency(interm, item)
interm.children.append(ch)
else:
interm = TreeNode(node, key, key, {})
node.children.append(interm)
for item in value:
ch = tree_from_json(interm, key+" item", item)
if ch:
interm.children.append(ch)
return node
def render_json_data(json_text, background_image, png_file):
padding = 50
json = decode_json(json_text)
tree = TreeRootNode(json)
tree.process()
layout = TreeLayouter(tree)
img = ImageSurface(cairo.CAIRO_FORMAT_ARGB32, 10, 100)
ctx = Context(img)
w, h = 500, 500
img = ImageSurface(cairo.CAIRO_FORMAT_ARGB32, w+padding*2, h+padding*2)
ctx = Context(img)
ctx.set_font_size(12)
if background_image:
bgimage = ImageSurface.from_png(background_image)
else:
bgimage = None
if bgimage and bgimage.status() == cairo.CAIRO_STATUS_SUCCESS:
ctx.save()
pat = Pattern(bgimage)
pat.set_extend(cairo.CAIRO_EXTEND_REPEAT)
ctx.set_source(pat)
ctx.paint()
ctx.restore()
else:
ctx.set_source_rgb(1,1,1)
ctx.paint()
#layout.render(ctx, 0, 0)
tree.layout(ctx, 0, 0)
tree.render(ctx)
img.write_to_png(png_file)
return w+padding*2, h+padding*2
if __name__ == "__main__":
import sys
f = sys.argv[1]
render_json_data(open(f).read(), None, f+".png")
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