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#include "mupdf/fitz.h"
#include "draw-imp.h"
#include <string.h>
void fz_new_aa_context(fz_context *ctx)
{
#ifndef AA_BITS
ctx->aa = fz_malloc_struct(ctx, fz_aa_context);
ctx->aa->hscale = 17;
ctx->aa->vscale = 15;
ctx->aa->scale = 256;
ctx->aa->bits = 8;
ctx->aa->text_bits = 8;
#endif
}
void fz_copy_aa_context(fz_context *dst, fz_context *src)
{
if (dst && dst->aa && src && src->aa)
memcpy(dst->aa, src->aa, sizeof(*src->aa));
}
void fz_drop_aa_context(fz_context *ctx)
{
if (!ctx)
return;
#ifndef AA_BITS
fz_free(ctx, ctx->aa);
ctx->aa = NULL;
#endif
}
int
fz_aa_level(fz_context *ctx)
{
return fz_aa_bits;
}
int
fz_graphics_aa_level(fz_context *ctx)
{
return fz_aa_bits;
}
int
fz_text_aa_level(fz_context *ctx)
{
return fz_aa_text_bits;
}
int
fz_rasterizer_graphics_aa_level(fz_rasterizer *ras)
{
return fz_rasterizer_aa_bits(ras);
}
int
fz_rasterizer_text_aa_level(fz_rasterizer *ras)
{
return fz_rasterizer_aa_text_bits(ras);
}
void
fz_set_rasterizer_text_aa_level(fz_context *ctx, fz_aa_context *aa, int level)
{
#ifdef AA_BITS
if (level != fz_aa_bits)
{
if (fz_aa_bits == 10)
fz_warn(ctx, "Only the Any-part-of-a-pixel rasterizer was compiled in");
else if (fz_aa_bits == 9)
fz_warn(ctx, "Only the Centre-of-a-pixel rasterizer was compiled in");
else
fz_warn(ctx, "Only the %d bit anti-aliasing rasterizer was compiled in", fz_aa_bits);
}
#else
if (level > 8)
aa->text_bits = 0;
else if (level > 6)
aa->text_bits = 8;
else if (level > 4)
aa->text_bits = 6;
else if (level > 2)
aa->text_bits = 4;
else if (level > 0)
aa->text_bits = 2;
else
aa->text_bits = 0;
#endif
}
void
fz_set_rasterizer_graphics_aa_level(fz_context *ctx, fz_aa_context *aa, int level)
{
#ifdef AA_BITS
if (level != fz_aa_bits)
{
if (fz_aa_bits == 10)
fz_warn(ctx, "Only the Any-part-of-a-pixel rasterizer was compiled in");
else if (fz_aa_bits == 9)
fz_warn(ctx, "Only the Centre-of-a-pixel rasterizer was compiled in");
else
fz_warn(ctx, "Only the %d bit anti-aliasing rasterizer was compiled in", fz_aa_bits);
}
#else
if (level == 9 || level == 10)
{
aa->hscale = 1;
aa->vscale = 1;
aa->bits = level;
}
else if (level > 6)
{
aa->hscale = 17;
aa->vscale = 15;
aa->bits = 8;
}
else if (level > 4)
{
aa->hscale = 8;
aa->vscale = 8;
aa->bits = 6;
}
else if (level > 2)
{
aa->hscale = 5;
aa->vscale = 3;
aa->bits = 4;
}
else if (level > 0)
{
aa->hscale = 2;
aa->vscale = 2;
aa->bits = 2;
}
else
{
aa->hscale = 1;
aa->vscale = 1;
aa->bits = 0;
}
aa->scale = 0xFF00 / (aa->hscale * aa->vscale);
fz_set_rasterizer_text_aa_level(ctx, aa, level);
#endif
}
void
fz_set_aa_level(fz_context *ctx, int level)
{
fz_set_rasterizer_graphics_aa_level(ctx, ctx->aa, level);
fz_set_rasterizer_text_aa_level(ctx, ctx->aa, level);
}
void
fz_set_text_aa_level(fz_context *ctx, int level)
{
fz_set_rasterizer_text_aa_level(ctx, ctx->aa, level);
}
void
fz_set_graphics_aa_level(fz_context *ctx, int level)
{
fz_set_rasterizer_graphics_aa_level(ctx, ctx->aa, level);
}
void
fz_set_graphics_min_line_width(fz_context *ctx, float min_line_width)
{
if (!ctx || !ctx->aa)
return;
ctx->aa->min_line_width = min_line_width;
}
float
fz_graphics_min_line_width(fz_context *ctx)
{
if (!ctx || !ctx->aa)
return 0;
return ctx->aa->min_line_width;
}
float
fz_rasterizer_graphics_min_line_width(fz_rasterizer *ras)
{
return ras->aa.min_line_width;
}
fz_irect *
fz_bound_rasterizer(fz_context *ctx, const fz_rasterizer *rast, fz_irect *bbox)
{
const int hscale = fz_rasterizer_aa_hscale(rast);
const int vscale = fz_rasterizer_aa_vscale(rast);
if (rast->bbox.x1 < rast->bbox.x0 || rast->bbox.y1 < rast->bbox.y0)
{
*bbox = fz_empty_irect;
}
else
{
bbox->x0 = fz_idiv(rast->bbox.x0, hscale);
bbox->y0 = fz_idiv(rast->bbox.y0, vscale);
bbox->x1 = fz_idiv_up(rast->bbox.x1, hscale);
bbox->y1 = fz_idiv_up(rast->bbox.y1, vscale);
}
return bbox;
}
fz_rect *fz_scissor_rasterizer(fz_context *ctx, const fz_rasterizer *rast, fz_rect *r)
{
const int hscale = fz_rasterizer_aa_hscale(rast);
const int vscale = fz_rasterizer_aa_vscale(rast);
r->x0 = ((float)rast->clip.x0) / hscale;
r->y0 = ((float)rast->clip.y0) / vscale;
r->x1 = ((float)rast->clip.x1) / hscale;
r->y1 = ((float)rast->clip.y1) / vscale;
return r;
}
static fz_irect *fz_clip_rasterizer(fz_context *ctx, const fz_rasterizer *rast, fz_irect *r)
{
const int hscale = fz_rasterizer_aa_hscale(rast);
const int vscale = fz_rasterizer_aa_vscale(rast);
r->x0 = fz_idiv(rast->clip.x0, hscale);
r->y0 = fz_idiv(rast->clip.y0, vscale);
r->x1 = fz_idiv_up(rast->clip.x1, hscale);
r->y1 = fz_idiv_up(rast->clip.y1, vscale);
return r;
}
int fz_reset_rasterizer(fz_context *ctx, fz_rasterizer *rast, const fz_irect *clip)
{
const int hscale = fz_rasterizer_aa_hscale(rast);
const int vscale = fz_rasterizer_aa_vscale(rast);
if (fz_is_infinite_irect(clip))
{
rast->clip.x0 = rast->clip.y0 = BBOX_MIN;
rast->clip.x1 = rast->clip.y1 = BBOX_MAX;
}
else {
rast->clip.x0 = clip->x0 * hscale;
rast->clip.x1 = clip->x1 * hscale;
rast->clip.y0 = clip->y0 * vscale;
rast->clip.y1 = clip->y1 * vscale;
}
rast->bbox.x0 = rast->bbox.y0 = BBOX_MAX;
rast->bbox.x1 = rast->bbox.y1 = BBOX_MIN;
if (rast->fns.reset)
return rast->fns.reset(ctx, rast);
return 0;
}
void *fz_new_rasterizer_of_size(fz_context *ctx, int size, const fz_rasterizer_fns *fns)
{
fz_rasterizer *rast = fz_calloc(ctx, 1, size);
rast->fns = *fns;
rast->clip.x0 = rast->clip.y0 = BBOX_MIN;
rast->clip.x1 = rast->clip.y1 = BBOX_MAX;
rast->bbox.x0 = rast->bbox.y0 = BBOX_MAX;
rast->bbox.x1 = rast->bbox.y1 = BBOX_MIN;
return rast;
}
fz_rasterizer *fz_new_rasterizer(fz_context *ctx, const fz_aa_context *aa)
{
fz_rasterizer *r;
int bits;
#ifdef AA_BITS
bits = AA_BITS;
#else
if (aa == NULL)
aa = ctx->aa;
bits = aa->bits;
#endif
if (bits == 10)
r = fz_new_edgebuffer(ctx, FZ_EDGEBUFFER_ANY_PART_OF_PIXEL);
else if (bits == 9)
r = fz_new_edgebuffer(ctx, FZ_EDGEBUFFER_CENTER_OF_PIXEL);
else
r = fz_new_gel(ctx);
#ifndef AA_BITS
r->aa = *aa;
#endif
return r;
}
void fz_convert_rasterizer(fz_context *ctx, fz_rasterizer *r, int eofill, fz_pixmap *pix, unsigned char *colorbv, fz_overprint *eop)
{
fz_irect clip, scissor;
fz_irect pixmap_clip;
if (fz_is_empty_irect(fz_intersect_irect(fz_bound_rasterizer(ctx, r, &clip), fz_pixmap_bbox_no_ctx(pix, &pixmap_clip))))
return;
if (fz_is_empty_irect(fz_intersect_irect(&clip, fz_clip_rasterizer(ctx, r, &scissor))))
return;
r->fns.convert(ctx, r, eofill, &clip, pix, colorbv, eop);
}
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