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Diffstat (limited to 'surfaces/vega.h')
| -rw-r--r-- | surfaces/vega.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/surfaces/vega.h b/surfaces/vega.h index f01667b..b8e0044 100644 --- a/surfaces/vega.h +++ b/surfaces/vega.h @@ -1,6 +1,7 @@ #ifndef VEGA_H #define VEGA_H #include "module.h" +#include "symbols.h" #include <stdio.h> /* Vega reads a verified Pure module by convention (docs/design/001-first-component.md): @@ -121,4 +122,17 @@ void vega_grid_free(VegaGrid *); void vega_draw(VegaGrid *, PureApp *, const VegaScreen *, const char *prompt, size_t prompt_length, bool typing); /* The part and item a line of the last drawn grid shows. */ bool vega_hit(const VegaGrid *, unsigned line, unsigned *part, size_t *item); + +/* Pixels: the grid drawn with a font's glyphs (a symbol file, pixels per em). + * A cell is as wide as a digit and as tall as the font's line; each glyph is + * drawn once, the first time a cell shows it. */ +typedef struct { + VegaGlyphs *glyphs; + int cell_width, cell_height, baseline; +} VegaFace; +bool vega_face_open(VegaFace *, const VegaSymbols *, float pixels); +void vega_face_close(VegaFace *); +/* The grid into out: 0xRRGGBB pixels, grid->width * cell_width across and + * grid->height * cell_height down, stride pixels apart. */ +void vega_pixels(const VegaGrid *, VegaFace *, uint32_t *out, size_t stride); #endif |