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#include <lib9.h>
#include <kernel.h>
#include "interp.h"
#include "isa.h"
#include "runt.h"
#include "raise.h"
#include "freetypemod.h"
#include "freetype.h"
typedef struct Face Face;
struct Face {
Freetype_Face freetypeface; /* limbo part */
FTface ftface; /* private parts */
};
Type* TMatrix;
Type* TVector;
Type* TFace;
Type* TGlyph;
static uchar Matrixmap[] = Freetype_Matrix_map;
static uchar Vectormap[] = Freetype_Vector_map;
static uchar Facemap[] = Freetype_Face_map;
static uchar Glyphmap[] = Freetype_Glyph_map;
static void freeface(Heap*, int);
static Face* ckface(Freetype_Face*);
void
freetypemodinit(void)
{
builtinmod("$Freetype", Freetypemodtab, Freetypemodlen);
TMatrix = dtype(freeheap, sizeof(Freetype_Matrix), Matrixmap, sizeof(Matrixmap));
TVector = dtype(freeheap, sizeof(Freetype_Vector), Vectormap, sizeof(Vectormap));
TFace = dtype(freeface, sizeof(Face), Facemap, sizeof(Facemap));
TGlyph = dtype(freeheap, sizeof(Freetype_Glyph), Glyphmap, sizeof(Glyphmap));
}
void
Face_haschar(void *fp)
{
F_Face_haschar *f = fp;
Face *face;
*f->ret = 0;
face = ckface(f->face);
release();
*f->ret = fthaschar(face->ftface, f->c);
acquire();
}
void
Face_loadglyph(void *fp)
{
F_Face_loadglyph *f = fp;
Heap *h;
Face *face;
Freetype_Glyph *g;
FTglyph ftg;
int n, i, s1bpr, s2bpr;
char *err;
face = ckface(f->face);
destroy(*f->ret);
*f->ret = H;
release();
err = ftloadglyph(face->ftface, f->c, &ftg);
acquire();
if (err != nil) {
kwerrstr(err);
return;
}
h = heap(TGlyph);
if (h == H) {
kwerrstr(exNomem);
return;
}
g = H2D(Freetype_Glyph*, h);
n = ftg.width*ftg.height;
h = heaparray(&Tbyte, n);
if (h == H) {
destroy(g);
kwerrstr(exNomem);
return;
}
g->bitmap = H2D(Array*, h);
g->top = ftg.top;
g->left = ftg.left;
g->height = ftg.height;
g->width = ftg.width;
g->advance.x = ftg.advx;
g->advance.y = ftg.advy;
s1bpr = ftg.width;
s2bpr = ftg.bpr;
for (i = 0; i < ftg.height; i++)
memcpy(g->bitmap->data+(i*s1bpr), ftg.bitmap+(i*s2bpr), s1bpr);
*f->ret = g;
}
void
Freetype_newface(void *fp)
{
F_Freetype_newface *f = fp;
Heap *h;
Face *face;
Freetype_Face *limboface;
FTfaceinfo finfo;
char *path;
char *err;
destroy(*f->ret);
*f->ret = H;
h = heapz(TFace);
if (h == H) {
kwerrstr(exNomem);
return;
}
face = H2D(Face*, h);
limboface = (Freetype_Face*)face;
*f->ret = limboface;
path = strdup(string2c(f->path)); /* string2c() can call error() */
release();
err = ftnewface(path, f->index, &face->ftface, &finfo);
acquire();
free(path);
if (err != nil) {
*f->ret = H;
destroy(face);
kwerrstr(err);
return;
}
limboface->nfaces = finfo.nfaces;
limboface->index = finfo.index;
limboface->style = finfo.style;
limboface->height = finfo.height;
limboface->ascent = finfo.ascent;
limboface->familyname = c2string(finfo.familyname, strlen(finfo.familyname));
limboface->stylename = c2string(finfo.stylename, strlen(finfo.stylename));
*f->ret = limboface;
}
void
Freetype_newmemface(void *fp)
{
F_Freetype_newmemface *f = fp;
destroy(*f->ret);
*f->ret = H;
kwerrstr("not implemented");
}
void
Face_setcharsize(void *fp)
{
F_Face_setcharsize *f = fp;
Face *face;
Freetype_Face *limboface;
FTfaceinfo finfo;
char *err;
face = ckface(f->face);
limboface = (Freetype_Face*)face;
release();
err = ftsetcharsize(face->ftface, f->pts, f->hdpi, f->vdpi, &finfo);
acquire();
if (err == nil) {
limboface->height = finfo.height;
limboface->ascent = finfo.ascent;
}
retstr(err, f->ret);
}
void
Face_settransform(void *fp)
{
F_Face_settransform *f = fp;
FTmatrix *m = nil;
FTvector *v = nil;
Face *face;
face = ckface(f->face);
/*
* ftsettransform() has no error return
* we have one for consistency - but always nil for now
*/
destroy(*f->ret);
*f->ret = H;
if (f->m != H)
m = (FTmatrix*)(f->m);
if (f->v != H)
v = (FTvector*)(f->v);
release();
ftsettransform(face->ftface, m, v);
acquire();
}
static void
freeface(Heap *h, int swept)
{
Face *face = H2D(Face*, h);
if (!swept) {
destroy(face->freetypeface.familyname);
destroy(face->freetypeface.stylename);
}
release();
ftdoneface(face->ftface);
acquire();
memset(&face->ftface, 0, sizeof(face->ftface));
}
static Face*
ckface(Freetype_Face *face)
{
if (face == nil || face == H)
error("nil Face");
if (D2H(face)->t != TFace)
error(exType);
return (Face*)face;
}
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