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transform_grammar: correct and simplify rules per bcc7495a87 (commitcomment-15915607)

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image_filter: relax `agg-stack-blur` rule to allow `agg-stack-blur,agg-stack-blur(),agg-stack-blur(1),agg-stack-blur(1,1)` syntax + add image filter parsing tests
This commit is contained in:
artemp 2016-02-05 16:28:12 +01:00
parent bcc7495a87
commit cb708d7f5a
3 changed files with 47 additions and 11 deletions
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13
include/mapnik/image_filter_grammar_impl.hpp
View file

@ -57,14 +57,12 @@ image_filter_grammar<Iterator,ContType>::image_filter_grammar()
qi::_g_type _g;
qi::_h_type _h;
qi::_r1_type _r1;
qi::eps_type eps;
qi::char_type char_;
qi::double_type double_;
qi::no_skip_type no_skip;
using phoenix::push_back;
using phoenix::construct;
using phoenix::at_c;
start = -(filter % no_skip[*char_(", ")])
start = -(filter % *lit(','))
;
filter =
@ -101,11 +99,10 @@ image_filter_grammar<Iterator,ContType>::image_filter_grammar()
color_to_alpha_filter(_val)
;
agg_blur_filter = lit("agg-stack-blur")[_a = 1, _b = 1]
agg_blur_filter = (lit("agg-stack-blur")[_a = 1, _b = 1]
>> -( lit('(') >> -( radius_[_a = _1][_b = _1]
>> -(lit(',') >> radius_[_b = _1]))
>> lit(')'))
[push_back(_r1,construct<mapnik::filter::agg_stack_blur>(_a,_b))]
>> -(lit(',') >> radius_[_b = _1])) >> lit(')')))
[push_back(_r1, construct<mapnik::filter::agg_stack_blur>(_a,_b))]
;
scale_hsla_filter = lit("scale-hsla")

4
include/mapnik/transform_expression_grammar_impl.hpp
View file

@ -45,7 +45,6 @@ transform_expression_grammar<Iterator>::transform_expression_grammar()
qi::_3_type _3;
qi::_6_type _6;
qi::_val_type _val;
qi::char_type char_;
qi::double_type double_;
qi::lit_type lit;
qi::no_case_type no_case;
@ -57,8 +56,7 @@ transform_expression_grammar<Iterator>::transform_expression_grammar()
// the order provided. The individual transform definitions are
// separated by whitespace and/or a comma.
qi::no_skip_type no_skip;
start = transform_ % no_skip[*char_(", ")] ;
start = transform_ % *lit(',') ;
transform_ = matrix | translate | scale | rotate | skewX | skewY ;

41
test/unit/imaging/image_filter.cpp
View file

@ -7,6 +7,9 @@
#include <mapnik/image_filter.hpp>
#include <mapnik/image_util.hpp>
#include <mapnik/image_filter_types.hpp>
// stl
#include <sstream>
#include <array>
TEST_CASE("image filter") {
@ -389,6 +392,44 @@ SECTION("test colorize-alpha - two color with transparency") {
} // END SECTION
SECTION("test parsing image-filters") {
std::string str = ""; // empty string
std::vector<mapnik::filter::filter_type> filters;
CHECK(parse_image_filters(str, filters));
CHECK(filters.size() == 0);
std::array<std::string,17> expected = {{ "emboss",
"emboss",
"blur",
"gray",
"edge-detect",
"sobel",
"sharpen",
"x-gradient",
"y-gradient",
"invert",
"color-blind-protanope",
"color-blind-deuteranope",
"color-blind-tritanope",
"agg-stack-blur(1,1)",
"agg-stack-blur(1,1)",
"agg-stack-blur(2,2)",
"agg-stack-blur(2,3)"}};
str += "emboss emboss() blur,gray ,edge-detect, sobel , , sharpen,,,x-gradient y-gradientinvert";
str += "color-blind-protanope color-blind-deuteranope color-blind-tritanope agg-stack-blur,agg-stack-blur(),agg-stack-blur(2),agg-stack-blur(2,3)" ;
CHECK(parse_image_filters(str, filters));
CHECK(filters.size() == expected.size());
std::size_t count = 0;
for (auto const& filter : filters)
{
std::stringstream ss;
ss << filter;
CHECK (expected[count++] == ss.str());
}
}
SECTION("test colorize-alpha - parsing correct input") {
std::string s("colorize-alpha(#0000ff 0%, #00ff00 100%)");