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add support for background-image to cairo_renderer and refactor into setup function to match agg/grid renderers - closes #1724

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This commit is contained in:
Dane Springmeyer 2013-02-20 17:55:53 -08:00
parent ae0f072909
commit 12dfcef3a0
12 changed files with 560 additions and 9 deletions
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2
CHANGELOG.md
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@ -8,6 +8,8 @@ For a complete change history, see the git log.
## Future
- Added support for `background-image` in cairo_renderer (#1724)
- Added Layer `buffer-size` that can be used to override Map `buffer-size` to avoid
over-fetching of data that does not need to be buffered as much as other layers.
Map level `buffer-size` will be default if layers do not set the option. Renamed a

1
include/mapnik/cairo_renderer.hpp
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@ -127,6 +127,7 @@ protected:
cairo_face_manager face_manager_;
boost::shared_ptr<label_collision_detector4> detector_;
box2d<double> query_extent_;
void setup(Map const& m);
};
template <typename T>

50
src/cairo_renderer.cpp
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@ -137,7 +137,7 @@ cairo_renderer_base::cairo_renderer_base(Map const& m,
box2d<double>(-m.buffer_size(), -m.buffer_size(),
m.width() + m.buffer_size(), m.height() + m.buffer_size())))
{
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: Scale=" << m.scale();
setup(m);
}
cairo_renderer_base::cairo_renderer_base(Map const& m,
@ -182,6 +182,46 @@ cairo_renderer<cairo_surface_ptr>::cairo_renderer(Map const& m, cairo_surface_pt
cairo_renderer_base::~cairo_renderer_base() {}
void cairo_renderer_base::setup(Map const& map)
{
boost::optional<color> bg = m_.background();
if (bg)
{
cairo_save_restore guard(context_);
context_.set_color(*bg);
context_.paint();
}
boost::optional<std::string> const& image_filename = map.background_image();
if (image_filename)
{
// NOTE: marker_cache returns premultiplied image, if needed
boost::optional<mapnik::marker_ptr> bg_marker = mapnik::marker_cache::instance().find(*image_filename,true);
if (bg_marker && (*bg_marker)->is_bitmap())
{
mapnik::image_ptr bg_image = *(*bg_marker)->get_bitmap_data();
int w = bg_image->width();
int h = bg_image->height();
if ( w > 0 && h > 0)
{
// repeat background-image both vertically and horizontally
unsigned x_steps = unsigned(std::ceil(width_/double(w)));
unsigned y_steps = unsigned(std::ceil(height_/double(h)));
for (unsigned x=0;x<x_steps;++x)
{
for (unsigned y=0;y<y_steps;++y)
{
agg::trans_affine matrix = agg::trans_affine_translation(
x*w,
y*h);
context_.add_image(matrix, *bg_image, 1.0f);
}
}
}
}
}
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: Scale=" << map.scale();
}
void cairo_renderer_base::start_map_processing(Map const& map)
{
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: Start map processing bbox=" << map.get_current_extent();
@ -193,14 +233,6 @@ void cairo_renderer_base::start_map_processing(Map const& map)
#else
#warning building against cairo older that 1.6.0, map clipping is disabled
#endif
boost::optional<color> bg = m_.background();
if (bg)
{
cairo_save_restore guard(context_);
context_.set_color(*bg);
context_.paint();
}
}
template <>

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tests/visual_tests/grids/marker-with-background-image-257-reference.json Normal file
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@ -0,0 +1,73 @@
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tests/visual_tests/grids/marker-with-background-image-400-reference.json Normal file
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" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
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tests/visual_tests/grids/marker-with-background-image-600-reference.json Normal file
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@ -0,0 +1,109 @@
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" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
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" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
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" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
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" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ",
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tests/visual_tests/grids/tiff-resampling-600-reference.json Normal file
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@ -0,0 +1,108 @@
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tests/visual_tests/styles/marker-with-background-image.xml Normal file
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@ -0,0 +1,66 @@
<Map srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs" background-image="../../data/images/checker.jpg">
<Style name="ellipse">
<Rule>
<MarkersSymbolizer
width="240"
height="240"
fill="steelblue"
fill-opacity=".7"
stroke="yellow"
stroke-width="16"
stroke-opacity=".3"
/>
<MarkersSymbolizer
width="100"
opacity=".5"
fill="darkorange"
comp-op="multiply"
transform="skewX(50)"
allow-overlap="true"
/>
<MarkersSymbolizer
width="100"
opacity=".5"
fill="darkred"
comp-op="color-burn"
transform="skewX(-50)"
allow-overlap="true"
/>
</Rule>
</Style>
<Layer name="layer" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
<StyleName>ellipse</StyleName>
<Datasource>
<Parameter name="type">csv</Parameter>
<Parameter name="inline">
x,y
2.5,2.5
</Parameter>
</Datasource>
</Layer>
<!-- points to frame data view -->
<Style name="frame">
<Rule>
<PointSymbolizer />
</Rule>
</Style>
<Layer name="frame" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
<StyleName>frame</StyleName>
<Datasource>
<Parameter name="type">csv</Parameter>
<Parameter name="inline">
x,y
0,0
5,0
0,5
5,5
</Parameter>
</Datasource>
</Layer>
</Map>

1
tests/visual_tests/test.py
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@ -44,6 +44,7 @@ files = [
{'name': "marker-on-line-spacing-eq-width", 'sizes':[(600,400)]},
{'name': "marker-on-line-spacing-eq-width-overlap", 'sizes':[(600,400)]},
{'name': "marker_line_placement_on_points"},
{'name': "marker-with-background-image", 'sizes':[(600,400),(400,600),(257,256)]},
{'name': "whole-centroid", 'sizes':[(600,400)],
'bbox': mapnik.Box2d(736908, 4390316, 2060771, 5942346)},
{'name': "simple-E", 'bbox':mapnik.Box2d(-0.05, -0.01, 0.95, 0.01)},