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#include "graphics/image.hpp"
#include "graphics/opengl/data_traits.hpp"
#include "indexer/map_style_reader.hpp"
#include "coding/lodepng_io.hpp"
namespace gil = boost::gil;
namespace graphics
{
m2::PointU const GetDimensions(string const & resName, EDensity density)
{
ReaderPtr<Reader> reader = GetStyleReader().GetResourceReader(resName, convert(density));
gil::point2<ptrdiff_t> size = gil::lodepng_read_dimensions(reader);
return m2::PointU(size.x, size.y);
}
Image::Info::Info()
: Resource::Info(Resource::EImage),
m_size(0, 0)
{}
Image::Info::Info(char const * name, EDensity density)
: Resource::Info(Resource::EImage),
m_resourceName(name),
m_size(0, 0)
{
try
{
m_size = GetDimensions(name, density);
m_data.resize(m_size.x * m_size.y * sizeof(DATA_TRAITS::pixel_t));
DATA_TRAITS::view_t v = gil::interleaved_view(
m_size.x, m_size.y,
(DATA_TRAITS::pixel_t*)&m_data[0],
m_size.x * sizeof(DATA_TRAITS::pixel_t));
ReaderPtr<Reader> reader = GetStyleReader().GetResourceReader(name, convert(density));
gil::lodepng_read_and_convert_view(reader, v, DATA_TRAITS::color_converter());
}
catch (RootException const &)
{
}
}
unsigned Image::Info::width() const
{
return m_size.x;
}
unsigned Image::Info::height() const
{
return m_size.y;
}
unsigned char const * Image::Info::data() const
{
return &m_data[0];
}
bool Image::Info::lessThan(Resource::Info const * r) const
{
if (m_category != r->m_category)
return m_category < r->m_category;
Image::Info const * ri = static_cast<Image::Info const *>(r);
if (m_resourceName != ri->m_resourceName)
return m_resourceName < ri->m_resourceName;
return false;
}
Resource::Info const & Image::Info::cacheKey() const
{
return *this;
}
m2::PointU const Image::Info::resourceSize() const
{
return m2::PointU(m_size.x + 4, m_size.y + 4);
}
Resource * Image::Info::createResource(m2::RectU const & texRect,
uint8_t pipelineID) const
{
return new Image(texRect,
pipelineID,
*this);
}
Image::Image(m2::RectU const & texRect,
int pipelineID,
Info const & info)
: Resource(EImage, texRect, pipelineID),
m_info(info)
{
}
void Image::render(void * dst)
{
DATA_TRAITS::view_t dstView = gil::interleaved_view(
m_info.m_size.x + 4, m_info.m_size.y + 4,
(DATA_TRAITS::pixel_t*)dst,
(m_info.m_size.x + 4) * sizeof(DATA_TRAITS::pixel_t));
if ((m_info.m_size.x != 0) && (m_info.m_size.y != 0))
{
DATA_TRAITS::view_t srcView = gil::interleaved_view(
m_info.m_size.x, m_info.m_size.y,
(DATA_TRAITS::pixel_t*)&m_info.m_data[0],
m_info.m_size.x * sizeof(DATA_TRAITS::pixel_t));
gil::copy_pixels(
srcView,
gil::subimage_view(dstView, 2, 2, m_info.m_size.x, m_info.m_size.y));
}
DATA_TRAITS::pixel_t pxBorder = DATA_TRAITS::createPixel(Color(0, 0, 0, 0));
for (unsigned y = 0; y < 2; ++y)
for (unsigned x = 0; x < m_info.m_size.x + 4; ++x)
dstView(x, y) = pxBorder;
for (unsigned y = 2; y < m_info.m_size.y + 2; ++y)
{
for (unsigned x = 0; x < 2; ++x)
dstView(x, y) = pxBorder;
for (unsigned x = m_info.m_size.x + 2; x < m_info.m_size.x + 4; ++x)
dstView(x, y) = pxBorder;
}
for (unsigned y = m_info.m_size.y + 2; y < m_info.m_size.y + 4; ++y)
for (unsigned x = 0; x < m_info.m_size.x + 4; ++x)
dstView(x, y) = pxBorder;
}
Resource::Info const * Image::info() const
{
return &m_info;
}
}
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