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#include "importtools.hh"
#include <limits>
namespace mcufont {
void eliminate_duplicates(std::vector<DataFile::glyphentry_t> &glyphtable)
{
for (size_t i = 0; i + 1 < glyphtable.size(); i++)
{
for (size_t j = i + 1; j < glyphtable.size(); j++)
{
if (glyphtable.at(i).data == glyphtable.at(j).data &&
glyphtable.at(i).width == glyphtable.at(j).width)
{
for (int c : glyphtable.at(j).chars)
glyphtable.at(i).chars.push_back(c);
glyphtable.erase(glyphtable.begin() + j);
j--;
}
}
}
}
struct bbox_t
{
int left;
int top;
int right;
int bottom;
bbox_t()
{
left = std::numeric_limits<int>::max();
top = std::numeric_limits<int>::max();
right = std::numeric_limits<int>::min();
bottom = std::numeric_limits<int>::min();
}
void update(int x, int y)
{
if (x < left) left = x;
if (x > right) right = x;
if (y < top) top = y;
if (y > bottom) bottom = y;
}
};
void crop_glyphs(std::vector<DataFile::glyphentry_t> &glyphtable,
DataFile::fontinfo_t &fontinfo)
{
// Find out the maximum bounding box
bbox_t bbox;
for (DataFile::glyphentry_t &glyph : glyphtable)
{
for (int y = 0; y < fontinfo.max_height; y++)
{
for (int x = 0; x < fontinfo.max_width; x++)
{
if (glyph.data.at(y * fontinfo.max_width + x))
bbox.update(x, y);
}
}
}
// Crop the glyphs to that
size_t old_w = fontinfo.max_width;
size_t new_w = bbox.right - bbox.left + 1;
size_t new_h = bbox.bottom - bbox.top + 1;
for (DataFile::glyphentry_t &glyph : glyphtable)
{
DataFile::pixels_t old = glyph.data;
glyph.data.clear();
for (size_t y = 0; y < new_h; y++)
{
for (size_t x = 0; x < new_w; x++)
{
size_t old_x = bbox.left + x;
size_t old_y = bbox.top + y;
size_t old_pos = old_w * old_y + old_x;
glyph.data.push_back(old.at(old_pos));
}
}
}
fontinfo.max_width = new_w;
fontinfo.max_height = new_h;
fontinfo.baseline_x -= bbox.left;
fontinfo.baseline_y -= bbox.top;
}
void detect_flags(const std::vector<DataFile::glyphentry_t> &glyphtable,
DataFile::fontinfo_t &fontinfo)
{
if (!glyphtable.size())
return;
// Check if all glyphs have equal width
int width = glyphtable[0].width;
bool is_monospace = true;
for (const DataFile::glyphentry_t &g : glyphtable)
{
if (g.width != width)
{
is_monospace = false;
break;
}
}
if (is_monospace)
fontinfo.flags |= DataFile::FLAG_MONOSPACE;
// Check if all glyphs contain only 0 or 15 alpha
bool is_bw = true;
for (const DataFile::glyphentry_t &g : glyphtable)
{
for (uint8_t pixel : g.data)
{
if (pixel != 0 && pixel != 15)
{
is_bw = false;
break;
}
}
if (!is_bw) break;
}
if (is_bw)
fontinfo.flags |= DataFile::FLAG_BW;
}
}
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