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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2014 Daniel Standage <daniel.standage@gmail.com>
# Copyright (c) 2008 Sascha Steinbiss <steinbiss@zbh.uni-hamburg.de>
# Copyright (c) 2008 Center for Bioinformatics, University of Hamburg
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
from gt.dlload import gtlib
from gt.annotationsketch.style import Style
from gt.annotationsketch.image_info import ImageInfo
from gt.core.error import Error, gterror
from gt.core.gtstr import Str
GRAPHICS_PDF = 0
GRAPHICS_PNG = 1
GRAPHICS_PS = 2
GRAPHICS_SVG = 3
class Canvas:
def __init__(self, *args):
raise NotImplementedError("Please call the constructor of a Canvas " +
"implementation.")
def __del__(self):
try:
gtlib.gt_canvas_delete(self.canvas)
except AttributeError:
pass
def from_param(cls, obj):
if not isinstance(obj, Canvas):
raise TypeError("argument must be a Canvas")
return obj._as_parameter_
from_param = classmethod(from_param)
class CanvasCairoFileBase(Canvas):
def from_param(cls, obj):
if not isinstance(obj, CanvasCairoFile):
raise TypeError("argument must be a CanvasCairoFile")
return obj._as_parameter_
from_param = classmethod(from_param)
def to_file(self, filename):
err = Error()
rval = gtlib.gt_canvas_cairo_file_to_file(self.canvas,
str(filename).encode(
'UTF-8'),
err)
if rval != 0:
gterror(err)
def to_stream(self):
from ctypes import string_at
str = Str(None)
gtlib.gt_canvas_cairo_file_to_stream(self.canvas, str._as_parameter_)
return string_at(str.get_mem(), str.length())
def register(cls, gtlib):
from ctypes import c_char_p, c_void_p, c_ulong, c_int
gtlib.gt_canvas_delete.restype = None
gtlib.gt_canvas_delete.argtypes = [c_void_p]
gtlib.gt_canvas_cairo_file_to_file.restype = c_int
gtlib.gt_canvas_cairo_file_to_file.argtypes = [c_void_p,
c_char_p, c_void_p]
gtlib.gt_canvas_cairo_file_to_stream.restype = c_char_p
gtlib.gt_canvas_cairo_file_to_stream.argtypes = [c_void_p, c_void_p]
gtlib.gt_canvas_cairo_file_new.restype = c_void_p
gtlib.gt_canvas_cairo_file_new.argtypes = [c_void_p, c_int, c_ulong,
c_ulong, c_void_p, c_void_p]
register = classmethod(register)
class CanvasCairoFile(CanvasCairoFileBase):
def __init__(self, style, width, height, ii=None):
Style.from_param(style)
err = Error()
iip = None
if ii:
iip = ii._as_parameter_
canvas = gtlib.gt_canvas_cairo_file_new(style._as_parameter_,
GRAPHICS_PNG, width, height, iip, err._as_parameter_)
if canvas == None:
gterror(err)
self.canvas = canvas
self._as_parameter_ = self.canvas
class CanvasCairoFilePNG(CanvasCairoFileBase):
def __init__(self, style, width, height, ii=None):
err = Error()
iip = None
if ii:
iip = ii._as_parameter_
canvas = gtlib.gt_canvas_cairo_file_new(style._as_parameter_,
GRAPHICS_PNG, width, height, iip, err._as_parameter_)
if canvas == None:
gterror(err)
self.canvas = canvas
self._as_parameter_ = self.canvas
class CanvasCairoFilePDF(CanvasCairoFileBase):
def __init__(self, style, width, height, ii=None):
err = Error()
iip = None
if ii:
iip = ii._as_parameter_
canvas = gtlib.gt_canvas_cairo_file_new(style._as_parameter_,
GRAPHICS_PDF, width, height, iip, err._as_parameter_)
if canvas == None:
gterror(err)
self.canvas = canvas
self._as_parameter_ = self.canvas
class CanvasCairoFilePS(CanvasCairoFileBase):
def __init__(self, style, width, height, ii=None):
err = Error()
iip = None
if ii:
iip = ii._as_parameter_
canvas = gtlib.gt_canvas_cairo_file_new(style._as_parameter_,
GRAPHICS_PS, width, height, iip, err._as_parameter_)
if canvas == None:
gterror(err)
self.canvas = canvas
self._as_parameter_ = self.canvas
class CanvasCairoFileSVG(CanvasCairoFileBase):
def __init__(self, style, width, height, ii=None):
err = Error()
iip = None
if ii:
iip = ii._as_parameter_
canvas = gtlib.gt_canvas_cairo_file_new(style._as_parameter_,
GRAPHICS_SVG, width, height, iip, err._as_parameter_)
if canvas == None:
gterror(err)
self.canvas = canvas
self._as_parameter_ = self.canvas
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