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#ifndef VEGA_LAYOUT_H
#define VEGA_LAYOUT_H
#include "shape.h"
/* A paragraph set into lines (docs/design/004-text.md): its bidi levels
* (UAX #9), lines broken where UAX #14 allows and they fit (spaces at a
* line's end hang past it), and each line's runs (one level, one script)
* shaped and put in visual order. Positions are in the font's units: x
* from the paragraph's left edge, y up from the line's baseline. */
typedef struct {
uint32_t glyph; /* the font's: its symbol is VEGA_GLYPH_SYMBOLS + glyph */
uint32_t cluster; /* the paragraph index of the first character it came from */
int32_t x, y, advance;
} VegaPlaced;
typedef struct {
size_t first, count; /* its glyphs, left to right */
size_t start, end; /* the characters it holds, [start, end) */
int32_t left, width; /* where it starts and how far what shows goes */
} VegaLine;
typedef struct {
VegaLine *lines;
size_t line_count;
VegaPlaced *glyphs;
size_t glyph_count;
int level; /* the paragraph's: odd is right to left, and its lines align right */
int32_t width; /* the widest line's */
/* what setting the paragraph works in, kept for the next */
void *work;
size_t work_size, lines_allocated, glyphs_allocated;
} VegaLayout;
/* Set count characters in lines of at most width (0: no limit) with the
* font's shaping; direction is VEGA_BIDI_AUTO, _LTR or _RTL. The layout
* holds the result until it is set again; false without memory. */
bool vega_layout(VegaLayout *, VegaShaper *, const VegaShaping *, const uint32_t *codes, size_t count, int direction,
int32_t width);
void vega_layout_free(VegaLayout *);
#endif
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