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#include "mupdf/fitz.h"
#include "draw-imp.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;
}
#ifndef AA_BITS
static void
set_gfx_level(fz_context *ctx, int level)
{
if (level == 9 || level == 10)
{
fz_aa_hscale = 1;
fz_aa_vscale = 1;
fz_aa_bits = level;
}
else if (level > 6)
{
fz_aa_hscale = 17;
fz_aa_vscale = 15;
fz_aa_bits = 8;
}
else if (level > 4)
{
fz_aa_hscale = 8;
fz_aa_vscale = 8;
fz_aa_bits = 6;
}
else if (level > 2)
{
fz_aa_hscale = 5;
fz_aa_vscale = 3;
fz_aa_bits = 4;
}
else if (level > 0)
{
fz_aa_hscale = 2;
fz_aa_vscale = 2;
fz_aa_bits = 2;
}
else
{
fz_aa_hscale = 1;
fz_aa_vscale = 1;
fz_aa_bits = 0;
}
fz_aa_scale = 0xFF00 / (fz_aa_hscale * fz_aa_vscale);
}
static void
set_txt_level(fz_context *ctx, int level)
{
if (level > 6)
fz_aa_text_bits = 8;
else if (level > 4)
fz_aa_text_bits = 6;
else if (level > 2)
fz_aa_text_bits = 4;
else if (level > 0)
fz_aa_text_bits = 2;
else
fz_aa_text_bits = 0;
}
#endif /* AA_BITS */
void
fz_set_aa_level(fz_context *ctx, int level)
{
#ifdef AA_BITS
fz_warn(ctx, "anti-aliasing was compiled with a fixed precision of %d bits", fz_aa_bits);
#else
set_gfx_level(ctx, level);
set_txt_level(ctx, level);
#endif
}
void
fz_set_text_aa_level(fz_context *ctx, int level)
{
#ifdef AA_BITS
fz_warn(ctx, "anti-aliasing was compiled with a fixed precision of %d bits", fz_aa_bits);
#else
set_txt_level(ctx, level);
#endif
}
void
fz_set_graphics_aa_level(fz_context *ctx, int level)
{
#ifdef AA_BITS
fz_warn(ctx, "anti-aliasing was compiled with a fixed precision of %d bits", fz_aa_bits);
#else
set_gfx_level(ctx, level);
#endif
}
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;
}
fz_irect *
fz_bound_rasterizer(fz_context *ctx, const fz_rasterizer *rast, fz_irect *bbox)
{
const int hscale = fz_aa_hscale;
const int vscale = fz_aa_vscale;
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_aa_hscale;
const int vscale = fz_aa_vscale;
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_aa_hscale;
const int vscale = fz_aa_vscale;
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_aa_hscale;
const int vscale = fz_aa_vscale;
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)
{
if (ctx->aa->bits == 10)
return fz_new_edgebuffer(ctx, FZ_EDGEBUFFER_ANY_PART_OF_PIXEL);
else if (ctx->aa->bits == 9)
return fz_new_edgebuffer(ctx, FZ_EDGEBUFFER_CENTER_OF_PIXEL);
else
return fz_new_gel(ctx);
}
void fz_convert_rasterizer(fz_context *ctx, fz_rasterizer *r, int eofill, fz_pixmap *pix, unsigned char *colorbv)
{
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);
}
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