Some svg export software puts <defs> element at the end of the file.
If so, the <defs> element won't be found, when parsing <use>.
In such scenario, this patch postpone node cloning until the whole file
is parsed.
@issue: #568
<stop> tag should be always a child of a <linearGradient> or
<radialGradient> element, but there were files with <stop> tag inside <rect>.
This patch fixes a memory leak if no gradient is defined before <stop> tag.
* svg_loader: allow multiple defs without data and memory leak
If the svg file contained multiple <defs> tags, each subsequent tag
overwritten the previous tag. This resulted in incorrect rendering of the
file and memory leaks.
@Issues: 491
* svg_loader: allow multiple defs without data and memory leak- fix#1
Changed the idea to abandon node creating instead of deleting it after
creation. Removed simpleXmlParseAttributes for _createDefsNode.
Composition can be applied recursively if its children nodes have composition target to this one.
This can be occured by wrong svg description, and tvg prevents this exception case.
@Issue: https://github.com/Samsung/thorvg/issues/494
svg may have 'em' unit for fonts, strtof() must handle this case to not
drop in the infinite loop.
Yet thorvg doesn't support font feature in svg,
it must multiply values with font size if those values have 'em' size.
@Issue: https://github.com/Samsung/thorvg/issues/488
After finding no attributes but white spaces, attrs length could be negative
that resulted in segmentation fault in simpleXmlParseAttributes function.
@Issue: #487
../src/loaders/svg/tvgSvgLoader.cpp: In function ‘void _copyAttr(SvgNode*, const SvgNode*)’:
../src/loaders/svg/tvgSvgLoader.cpp:1598:60: warning: ‘void* memcpy(void*, const void*, size_t)’ writing to an object of type ‘struct SvgStyleProperty’ with no trivial copy-assignment; use copy-assignment or copy-initialization instead [-Wclass-memaccess]
memcpy(to->style, from->style, sizeof(SvgStyleProperty));
@Issue: 498
The ColorStop offset < 0 and > 1 should be treated as 0 and 1 respectively.
The offset value < than the previous offset value should be replaced
by the previous value - without this change segfault occurred.
Validating the APIs parameters values is the user responsibility.
When copying an attribute, url information of stype's composite is overwritten with memcpy.
This causes double free by deleting the wrong string in freeNodeStyle.
The loader was ready to handle the gradient stroke, but there was no API to support
it when the loader was introduced. We've had this API for a while already, so
its call has been added.
We are doing enough calculations in the parser if the unit is user space.
This causes the cx,cy coordinates of radial gradient to be calculated incorrectly.
So remove it.
Calculation of objectBoundingBox case in linear gradient is incorrect code.
This causes the x,y coordinates of the linear gradient to be calculated incorrectly.
So remove it.
The 'loader->svgParse->global' variable was uninitialized when no viewBox attribute
was set. If gradient was applied, the division by zero occured and no gradient was drawn.
