#include "mupdf/fitz/context.h"
#include "mupdf/fitz/geometry.h"
#include "mupdf/fitz/font.h"
#include "mupdf/fitz/pixmap.h"
#include "mupdf/fitz/device.h"

Include dependency graph for glyph-cache.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions
void	fz_purge_glyph_cache (fz_context *ctx)
fz_pixmap *	fz_render_glyph_pixmap (fz_context ctx, fz_font font, int gid, fz_matrix ctm, const fz_irect scissor, int aa)
void	fz_render_t3_glyph_direct (fz_context ctx, fz_device dev, fz_font font, int gid, fz_matrix trm, void gstate, fz_default_colorspaces def_cs, void fill_gstate, void *stroke_gstate)
void	fz_prepare_t3_glyph (fz_context ctx, fz_font font, int gid)
void	fz_dump_glyph_cache_stats (fz_context ctx, fz_output out)
float	fz_subpixel_adjust (fz_context ctx, fz_matrix ctm, fz_matrix subpix_ctm, unsigned char qe, unsigned char *qf)

Function Documentation

◆ fz_dump_glyph_cache_stats()

void fz_dump_glyph_cache_stats	(	fz_context *	ctx,
		fz_output *	out )

Dump debug statistics for the glyph cache.

◆ fz_prepare_t3_glyph()

void fz_prepare_t3_glyph	(	fz_context *	ctx,
		fz_font *	font,
		int	gid )

Force a type3 font to cache the displaylist for a given glyph id.

This caching can involve reading the underlying file, so must happen ahead of time, so we aren't suddenly forced to read the file while playing a displaylist back.

◆ fz_purge_glyph_cache()

void fz_purge_glyph_cache ( fz_context * ctx )

Purge all the glyphs from the cache.

◆ fz_render_glyph_pixmap()

fz_pixmap * fz_render_glyph_pixmap	(	fz_context *	ctx,
		fz_font *	font,
		int	gid,
		fz_matrix *	ctm,
		const fz_irect *	scissor,
		int	aa )

Create a pixmap containing a rendered glyph.

Lookup gid from font, clip it with scissor, and rendering it with aa bits of antialiasing into a new pixmap.

The caller takes ownership of the pixmap and so must free it.

Note: This function is no longer used for normal rendering operations, and is kept around just because we use it in the app. It should be considered "at risk" of removal from the API.

◆ fz_render_t3_glyph_direct()

void fz_render_t3_glyph_direct	(	fz_context *	ctx,
		fz_device *	dev,
		fz_font *	font,
		int	gid,
		fz_matrix	trm,
		void *	gstate,
		fz_default_colorspaces *	def_cs,
		void *	fill_gstate,
		void *	stroke_gstate )

Nasty PDF interpreter specific hernia, required to allow the interpreter to replay glyphs from a type3 font directly into the target device.

This is only used in exceptional circumstances (such as type3 glyphs that inherit current graphics state, or nested type3 glyphs).

◆ fz_subpixel_adjust()

float fz_subpixel_adjust	(	fz_context *	ctx,
		fz_matrix *	ctm,
		fz_matrix *	subpix_ctm,
		unsigned char *	qe,
		unsigned char *	qf )

Perform subpixel quantisation and adjustment on a glyph matrix.

ctm: On entry, the desired 'ideal' transformation for a glyph. On exit, adjusted to a (very similar) transformation quantised for subpixel caching.

subpix_ctm: Initialised by the routine to the transform that should be used to render the glyph.

qe, qf: which subpixel position we quantised to.

Returns: the size of the glyph.

Note: This is currently only exposed for use in our app. It should be considered "at risk" of removal from the API.