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Method-Draw/editor/src/browser.js at master · jamesfebin/Method-Draw · GitHub
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/**
* Package: svgedit.browser
*
* Licensed under the Apache License, Version 2
*
* Copyright(c) 2010 Jeff Schiller
* Copyright(c) 2010 Alexis Deveria
*/
// Dependencies:
// 1) jQuery (for $.alert())
var
svgedit
=
svgedit
||
{
}
;
(
function
(
)
{
if
(
!
svgedit
.
browser
)
{
svgedit
.
browser
=
{
}
;
}
var
supportsSvg_
=
(
function
(
)
{
return
!
!
document
.
createElementNS
&&
!
!
document
.
createElementNS
(
'http://www.w3.org/2000/svg'
,
'svg'
)
.
createSVGRect
;
}
)
(
)
;
svgedit
.
browser
.
supportsSvg
=
function
(
)
{
return
supportsSvg_
;
}
if
(
!
svgedit
.
browser
.
supportsSvg
(
)
)
{
window
.
location
=
"browser-not-supported.html"
;
}
else
{
var
svgns
=
'http://www.w3.org/2000/svg'
;
var
userAgent
=
navigator
.
userAgent
;
var
svg
=
document
.
createElementNS
(
svgns
,
'svg'
)
;
// Note: Browser sniffing should only be used if no other detection method is possible
var
isOpera_
=
!
!
window
.
opera
;
var
isWebkit_
=
userAgent
.
indexOf
(
"AppleWebKit"
)
>=
0
;
var
isGecko_
=
userAgent
.
indexOf
(
'Gecko/'
)
>=
0
;
var
isIE_
=
userAgent
.
indexOf
(
'MSIE'
)
>=
0
;
var
isChrome_
=
userAgent
.
indexOf
(
'Chrome/'
)
>=
0
;
var
isWindows_
=
userAgent
.
indexOf
(
'Windows'
)
>=
0
;
var
isMac_
=
userAgent
.
indexOf
(
'Macintosh'
)
>=
0
;
var
isTouch_
=
'ontouchstart'
in
window
;
var
supportsSelectors_
=
(
function
(
)
{
return
!
!
svg
.
querySelector
;
}
)
(
)
;
var
supportsXpath_
=
(
function
(
)
{
return
!
!
document
.
evaluate
;
}
)
(
)
;
// text character positioning (for IE9)
var
supportsGoodTextCharPos_
=
(
function
(
)
{
var
retValue
=
false
;
var
svgroot
=
document
.
createElementNS
(
svgns
,
'svg'
)
;
var
svgcontent
=
document
.
createElementNS
(
svgns
,
'svg'
)
;
document
.
documentElement
.
appendChild
(
svgroot
)
;
svgcontent
.
setAttribute
(
'x'
,
5
)
;
svgroot
.
appendChild
(
svgcontent
)
;
var
text
=
document
.
createElementNS
(
svgns
,
'text'
)
;
text
.
textContent
=
'a'
;
svgcontent
.
appendChild
(
text
)
;
var
pos
=
text
.
getStartPositionOfChar
(
0
)
pos
=
pos
.
x
;
//if you put it on one line it fails when compiled
document
.
documentElement
.
removeChild
(
svgroot
)
;
return
(
pos
===
0
)
;
}
)
(
)
;
var
supportsPathBBox_
=
(
function
(
)
{
var
svgcontent
=
document
.
createElementNS
(
svgns
,
'svg'
)
;
document
.
documentElement
.
appendChild
(
svgcontent
)
;
var
path
=
document
.
createElementNS
(
svgns
,
'path'
)
;
path
.
setAttribute
(
'd'
,
'M0,0 C0,0 10,10 10,0'
)
;
svgcontent
.
appendChild
(
path
)
;
var
bbox
=
path
.
getBBox
(
)
;
document
.
documentElement
.
removeChild
(
svgcontent
)
;
return
(
bbox
.
height
>
4
&&
bbox
.
height
<
5
)
;
}
)
(
)
;
// Support for correct bbox sizing on groups with horizontal/vertical lines
var
supportsHVLineContainerBBox_
=
(
function
(
)
{
var
svgcontent
=
document
.
createElementNS
(
svgns
,
'svg'
)
;
document
.
documentElement
.
appendChild
(
svgcontent
)
;
var
path
=
document
.
createElementNS
(
svgns
,
'path'
)
;
path
.
setAttribute
(
'd'
,
'M0,0 10,0'
)
;
var
path2
=
document
.
createElementNS
(
svgns
,
'path'
)
;
path2
.
setAttribute
(
'd'
,
'M5,0 15,0'
)
;
var
g
=
document
.
createElementNS
(
svgns
,
'g'
)
;
g
.
appendChild
(
path
)
;
g
.
appendChild
(
path2
)
;
svgcontent
.
appendChild
(
g
)
;
var
bbox
=
g
.
getBBox
(
)
;
document
.
documentElement
.
removeChild
(
svgcontent
)
;
// Webkit gives 0, FF gives 10, Opera (correctly) gives 15
return
(
bbox
.
width
==
15
)
;
}
)
(
)
;
var
supportsEditableText_
=
(
function
(
)
{
// TODO: Find better way to check support for this
return
isOpera_
;
}
)
(
)
;
var
supportsGoodDecimals_
=
(
function
(
)
{
// Correct decimals on clone attributes (Opera < 10.5/win/non-en)
var
rect
=
document
.
createElementNS
(
svgns
,
'rect'
)
;
rect
.
setAttribute
(
'x'
,
.1
)
;
var
crect
=
rect
.
cloneNode
(
false
)
;
var
retValue
=
(
crect
.
getAttribute
(
'x'
)
.
indexOf
(
','
)
==
-
1
)
;
if
(
!
retValue
)
{
$
.
alert
(
"NOTE: This version of Opera is known to contain bugs in SVG-edit.\n\
Please upgrade to the <a href='http://opera.com'>latest version</a> in which the problems have been fixed."
)
;
}
return
retValue
;
}
)
(
)
;
var
supportsNonScalingStroke_
=
(
function
(
)
{
var
rect
=
document
.
createElementNS
(
svgns
,
'rect'
)
;
rect
.
setAttribute
(
'style'
,
'vector-effect:non-scaling-stroke'
)
;
return
rect
.
style
.
vectorEffect
===
'non-scaling-stroke'
;
}
)
(
)
;
var
supportsNativeSVGTransformLists_
=
(
function
(
)
{
var
rect
=
document
.
createElementNS
(
svgns
,
'rect'
)
;
var
rxform
=
rect
.
transform
.
baseVal
;
var
t1
=
svg
.
createSVGTransform
(
)
;
rxform
.
appendItem
(
t1
)
;
return
rxform
.
getItem
(
0
)
==
t1
;
}
)
(
)
;
var
supportsBlobs_
=
(
function
(
)
{
if
(
typeof
Blob
!=
'function'
)
return
false
;
// check if download is supported
var
svg
=
new
Blob
(
[
"<svg xmlns='http://www.w3.org/2000/svg'></svg>"
]
,
{
type
:
"image/svg+xml;charset=utf-8"
}
)
;
var
img
=
new
Image
(
)
;
var
support
=
false
;
img
.
onload
=
function
(
)
{
svgedit
.
browser
.
supportsBlobs
=
function
(
)
{
return
true
}
}
;
img
.
onerror
=
function
(
)
{
svgedit
.
browser
.
supportsBlobs
=
function
(
)
{
return
false
}
}
;
img
.
src
=
URL
.
createObjectURL
(
svg
)
;
return
false
;
}
)
(
)
;
// Public API
svgedit
.
browser
.
isOpera
=
function
(
)
{
return
isOpera_
;
}
svgedit
.
browser
.
isWebkit
=
function
(
)
{
return
isWebkit_
;
}
svgedit
.
browser
.
isGecko
=
function
(
)
{
return
isGecko_
;
}
svgedit
.
browser
.
isIE
=
function
(
)
{
return
isIE_
;
}
svgedit
.
browser
.
isChrome
=
function
(
)
{
return
isChrome_
;
}
svgedit
.
browser
.
isWindows
=
function
(
)
{
return
isWindows_
;
}
svgedit
.
browser
.
isMac
=
function
(
)
{
return
isMac_
;
}
svgedit
.
browser
.
isTouch
=
function
(
)
{
return
isTouch_
;
}
svgedit
.
browser
.
supportsSelectors
=
function
(
)
{
return
supportsSelectors_
;
}
svgedit
.
browser
.
supportsXpath
=
function
(
)
{
return
supportsXpath_
;
}
svgedit
.
browser
.
supportsPathBBox
=
function
(
)
{
return
supportsPathBBox_
;
}
svgedit
.
browser
.
supportsHVLineContainerBBox
=
function
(
)
{
return
supportsHVLineContainerBBox_
;
}
svgedit
.
browser
.
supportsGoodTextCharPos
=
function
(
)
{
return
supportsGoodTextCharPos_
;
}
svgedit
.
browser
.
supportsEditableText
=
function
(
)
{
return
supportsEditableText_
;
}
svgedit
.
browser
.
supportsGoodDecimals
=
function
(
)
{
return
supportsGoodDecimals_
;
}
svgedit
.
browser
.
supportsNonScalingStroke
=
function
(
)
{
return
supportsNonScalingStroke_
;
}
svgedit
.
browser
.
supportsNativeTransformLists
=
function
(
)
{
return
supportsNativeSVGTransformLists_
;
}
svgedit
.
browser
.
supportsBlobs
=
function
(
)
{
return
supportsBlobs_
;
}
}
}
)
(
)
;
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