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134 lines
3.4 KiB
134 lines
3.4 KiB
#ifndef MUPDF_FITZ_GLYPH_H
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#define MUPDF_FITZ_GLYPH_H
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#include "mupdf/fitz/system.h"
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#include "mupdf/fitz/context.h"
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#include "mupdf/fitz/geometry.h"
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#include "mupdf/fitz/store.h"
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#include "mupdf/fitz/colorspace.h"
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/*
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Glyphs represent a run length encoded set of pixels for a 2
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dimensional region of a plane.
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*/
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typedef struct fz_glyph_s fz_glyph;
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/*
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fz_glyph_bbox: Return the bounding box for a glyph.
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*/
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fz_irect *fz_glyph_bbox(fz_context *ctx, fz_glyph *glyph, fz_irect *bbox);
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/*
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fz_glyph_width: Return the width of the glyph in pixels.
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*/
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int fz_glyph_width(fz_context *ctx, fz_glyph *glyph);
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/*
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fz_glyph_height: Return the height of the glyph in pixels.
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*/
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int fz_glyph_height(fz_context *ctx, fz_glyph *glyph);
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/*
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fz_new_glyph_from_pixmap: Create a new glyph from a pixmap
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Returns a pointer to the new glyph. Throws exception on failure to
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allocate.
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*/
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fz_glyph *fz_new_glyph_from_pixmap(fz_context *ctx, fz_pixmap *pix);
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/*
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fz_new_glyph_from_8bpp_data: Create a new glyph from 8bpp data
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x, y: X and Y position for the glyph
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w, h: Width and Height for the glyph
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sp: Source Pointer to data
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span: Increment from line to line of data
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Returns a pointer to the new glyph. Throws exception on failure to
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allocate.
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*/
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fz_glyph *fz_new_glyph_from_8bpp_data(fz_context *ctx, int x, int y, int w, int h, unsigned char *sp, int span);
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/*
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fz_new_glyph_from_1bpp_data: Create a new glyph from 1bpp data
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x, y: X and Y position for the glyph
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w, h: Width and Height for the glyph
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sp: Source Pointer to data
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span: Increment from line to line of data
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Returns a pointer to the new glyph. Throws exception on failure to
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allocate.
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*/
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fz_glyph *fz_new_glyph_from_1bpp_data(fz_context *ctx, int x, int y, int w, int h, unsigned char *sp, int span);
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/*
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fz_keep_glyph: Take a reference to a glyph.
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pix: The glyph to increment the reference for.
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Returns pix.
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*/
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fz_glyph *fz_keep_glyph(fz_context *ctx, fz_glyph *pix);
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/*
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fz_drop_glyph: Drop a reference and free a glyph.
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Decrement the reference count for the glyph. When no
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references remain the glyph will be freed.
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*/
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void fz_drop_glyph(fz_context *ctx, fz_glyph *pix);
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/*
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Glyphs represent a set of pixels for a 2 dimensional region of a
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plane.
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x, y: The minimum x and y coord of the region in pixels.
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w, h: The width and height of the region in pixels.
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samples: The sample data. The sample data is in a compressed format
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designed to give reasonable compression, and to be fast to plot from.
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The first sizeof(int) * h bytes of the table, when interpreted as
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ints gives the offset within the data block of that lines data. An
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offset of 0 indicates that that line is completely blank.
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The data for individual lines is a sequence of bytes:
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00000000 = end of lines data
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LLLLLL00 = extend the length given in the next run by the 6 L bits
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given here.
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LLLLLL01 = A run of length L+1 transparent pixels.
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LLLLLE10 = A run of length L+1 solid pixels. If E then this is the
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last run on this line.
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LLLLLE11 = A run of length L+1 intermediate pixels followed by L+1
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bytes of literal pixel data. If E then this is the last run
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on this line.
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*/
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struct fz_glyph_s
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{
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fz_storable storable;
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int x, y, w, h;
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fz_pixmap *pixmap;
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size_t size;
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unsigned char data[1];
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};
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fz_irect *fz_glyph_bbox_no_ctx(fz_glyph *src, fz_irect *bbox);
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static inline size_t
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fz_glyph_size(fz_context *ctx, fz_glyph *glyph)
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{
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if (glyph == NULL)
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return 0;
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return sizeof(fz_glyph) + glyph->size + fz_pixmap_size(ctx, glyph->pixmap);
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}
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#endif
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