qgrayraster.c File Reference

#include <string.h>
#include <setjmp.h>
#include <limits.h>
#include <stddef.h>
#include <private/qrasterdefs_p.h>
#include <private/qgrayraster_p.h>
#include <qcompilerdetection.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>

Include dependency graph for qgrayraster.c:

Go to the source code of this file.

Classes
struct	TCell_
struct	TWorker_
struct	TRaster_
struct	TBand_

Macros
#define	QT_FT_COMPONENT   trace_smooth
#define	QT_FT_ERR_XCAT(x, y)   x ## y
#define	QT_FT_ERR_CAT(x, y)   QT_FT_ERR_XCAT( x, y )
#define	QT_FT_BEGIN_STMNT   do {
#define	QT_FT_END_STMNT   } while ( 0 )
#define	QT_FT_MAX(a, b)   ( (a) > (b) ? (a) : (b) )
#define	QT_FT_ABS(a)   ( (a) < 0 ? -(a) : (a) )
#define	QT_FT_HYPOT(x, y)
#define	ErrRaster_MemoryOverflow   -4
#define	QT_FT_UINT_MAX   UINT_MAX
#define	qt_ft_memset   memset
#define	qt_ft_setjmp   setjmp
#define	qt_ft_longjmp   longjmp
#define	qt_ft_jmp_buf   jmp_buf
#define	ErrRaster_Invalid_Mode   -2
#define	ErrRaster_Invalid_Outline   -1
#define	ErrRaster_Invalid_Argument   -3
#define	ErrRaster_Memory_Overflow   -4
#define	ErrRaster_OutOfMemory   -6
#define	QT_FT_BEGIN_HEADER
#define	QT_FT_END_HEADER
#define	QT_FT_UNUSED(x)   (void) x
#define	QT_FT_TRACE5(x)   do { } while ( 0 ) /* nothing */
#define	QT_FT_TRACE7(x)   do { } while ( 0 ) /* nothing */
#define	QT_FT_ERROR(x)   do { } while ( 0 ) /* nothing */
#define	QT_FT_THROW(e)   QT_FT_ERR_CAT( ErrRaster_, e )
#define	QT_FT_MEM_SET(d, s, c)   qt_ft_memset( d, s, c )
#define	QT_FT_MEM_ZERO(dest, count)   QT_FT_MEM_SET( dest, 0, count )
#define	RAS_ARG   PWorker worker
#define	RAS_ARG_   PWorker worker,
#define	RAS_VAR   worker
#define	RAS_VAR_   worker,
#define	ras   (*worker)
#define	PIXEL_BITS   8
#define	ONE_PIXEL   ( 1L << PIXEL_BITS )
#define	TRUNC(x)   (TCoord)( (x) >> PIXEL_BITS )
#define	FRACT(x)   (TCoord)( (x) & ( ONE_PIXEL - 1 ) )
#define	UPSCALE(x)   ( (x) * ( ONE_PIXEL >> 6 ) )
#define	DOWNSCALE(x)   ( (x) >> ( PIXEL_BITS - 6 ) )
#define	QT_FT_DIV_MOD(type, dividend, divisor, quotient, remainder)
#define	QT_FT_UDIVPREP(b)    long b ## _r = (long)( ULONG_MAX >> PIXEL_BITS ) / ( b )
#define	QT_FT_UDIV(a, b)
#define	QT_FT_MAX_GRAY_SPANS   256
#define	SCALED(x)   (x)

Typedefs
typedef ptrdiff_t	QT_FT_PtrDist
typedef long	TCoord
typedef long	TPos
typedef long	TArea
typedef struct TCell_ *	PCell
typedef struct TCell_	TCell
typedef struct TWorker_	TWorker
typedef struct TWorker_ *	PWorker
typedef struct TRaster_	TRaster
typedef struct TRaster_ *	PRaster
typedef struct TBand_	TBand

Functions
int	q_gray_rendered_spans (TRaster *raster)
static void	gray_init_cells (RAS_ARG_ void *buffer, long byte_size)
static void	gray_compute_cbox (RAS_ARG)
static PCell	gray_find_cell (RAS_ARG)
static void	gray_record_cell (RAS_ARG)
static void	gray_set_cell (RAS_ARG_ TCoord ex, TCoord ey)
static void	gray_start_cell (RAS_ARG_ TCoord ex, TCoord ey)
static void	gray_render_scanline (RAS_ARG_ TCoord ey, TPos x1, TCoord y1, TPos x2, TCoord y2)
static void	gray_render_line (RAS_ARG_ TPos to_x, TPos to_y)
static void	gray_split_conic (QT_FT_Vector *base)
static void	gray_render_conic (RAS_ARG_ const QT_FT_Vector *control, const QT_FT_Vector *to)
static void	gray_split_cubic (QT_FT_Vector *base)
static void	gray_render_cubic (RAS_ARG_ const QT_FT_Vector *control1, const QT_FT_Vector *control2, const QT_FT_Vector *to)
static int	gray_move_to (const QT_FT_Vector *to, PWorker worker)
static void	gray_render_span (int count, const QT_FT_Span *spans, PWorker worker)
static void	gray_hline (RAS_ARG_ TCoord x, TCoord y, TPos area, int acount)
static void	gray_sweep (RAS_ARG_ const QT_FT_Bitmap *target)
static int	QT_FT_Outline_Decompose (const QT_FT_Outline *outline, void *user)
static int	gray_convert_glyph_inner (RAS_ARG)
static int	gray_convert_glyph (RAS_ARG)
static int	gray_raster_render (QT_FT_Raster raster, const QT_FT_Raster_Params *params)
static int	gray_raster_new (QT_FT_Raster *araster)
static void	gray_raster_done (QT_FT_Raster raster)
static void	gray_raster_reset (QT_FT_Raster raster, char *pool_base, long pool_size)

Variables
const QT_FT_Raster_Funcs	qt_ft_grays_raster

Macro Definition Documentation

DOWNSCALE

#define DOWNSCALE

(

x

)

( (x) >> ( PIXEL_BITS - 6 ) )

Definition at line 189 of file qgrayraster.c.

ErrRaster_Invalid_Argument

#define ErrRaster_Invalid_Argument   -3

Definition at line 140 of file qgrayraster.c.

ErrRaster_Invalid_Mode

#define ErrRaster_Invalid_Mode   -2

Definition at line 138 of file qgrayraster.c.

ErrRaster_Invalid_Outline

#define ErrRaster_Invalid_Outline   -1

Definition at line 139 of file qgrayraster.c.

ErrRaster_Memory_Overflow

#define ErrRaster_Memory_Overflow   -4

Definition at line 141 of file qgrayraster.c.

ErrRaster_MemoryOverflow

#define ErrRaster_MemoryOverflow   -4

Definition at line 118 of file qgrayraster.c.

ErrRaster_OutOfMemory

#define ErrRaster_OutOfMemory   -6

Definition at line 142 of file qgrayraster.c.

FRACT

#define FRACT

(

x

)

(TCoord)( (x) & ( ONE_PIXEL - 1 ) )

Definition at line 185 of file qgrayraster.c.

ONE_PIXEL

#define ONE_PIXEL   ( 1L << PIXEL_BITS )

Definition at line 183 of file qgrayraster.c.

PIXEL_BITS

#define PIXEL_BITS   8

Definition at line 181 of file qgrayraster.c.

QT_FT_ABS

#define QT_FT_ABS

(

a

)

( (a) < 0 ? -(a) : (a) )

Definition at line 104 of file qgrayraster.c.

QT_FT_BEGIN_HEADER

#define QT_FT_BEGIN_HEADER

Definition at line 144 of file qgrayraster.c.

QT_FT_BEGIN_STMNT

#define QT_FT_BEGIN_STMNT   do {

Definition at line 100 of file qgrayraster.c.

QT_FT_COMPONENT

#define QT_FT_COMPONENT   trace_smooth

Definition at line 93 of file qgrayraster.c.

QT_FT_DIV_MOD

#define QT_FT_DIV_MOD	(		type,
			dividend,
			divisor,
			quotient,
			remainder
	)

Value:

QT_FT_BEGIN_STMNT                                                   \
  (quotient)  = (type)( (dividend) / (divisor) );                \
  (remainder) = (type)( (dividend) % (divisor) );                \
  if ( (remainder) < 0 )                                         \
  {                                                              \
    (quotient)--;                                                \
    (remainder) += (type)(divisor);                              \
  }                                                              \
QT_FT_END_STMNT

Definition at line 198 of file qgrayraster.c.

QT_FT_END_HEADER

#define QT_FT_END_HEADER

Definition at line 145 of file qgrayraster.c.

QT_FT_END_STMNT

#define QT_FT_END_STMNT   } while ( 0 )

Definition at line 101 of file qgrayraster.c.

QT_FT_ERR_CAT

#define QT_FT_ERR_CAT	(		x,
			y
	)		QT_FT_ERR_XCAT( x, y )

Definition at line 98 of file qgrayraster.c.

QT_FT_ERR_XCAT

#define QT_FT_ERR_XCAT	(		x,
			y
	)		x ## y

Definition at line 97 of file qgrayraster.c.

QT_FT_ERROR

#define QT_FT_ERROR

(

x

)

do { } while ( 0 ) /* nothing */

Definition at line 160 of file qgrayraster.c.

QT_FT_HYPOT

#define QT_FT_HYPOT	(		x,
			y
	)

Value:

        ( x = QT_FT_ABS( x ),             \
          y = QT_FT_ABS( y ),             \
          x > y ? x + ( 3 * y >> 3 )   \
                : y + ( 3 * x >> 3 ) )

Definition at line 112 of file qgrayraster.c.

qt_ft_jmp_buf

#define qt_ft_jmp_buf   jmp_buf

Definition at line 133 of file qgrayraster.c.

qt_ft_longjmp

#define qt_ft_longjmp   longjmp

Definition at line 132 of file qgrayraster.c.

QT_FT_MAX

#define QT_FT_MAX	(		a,
			b
	)		( (a) > (b) ? (a) : (b) )

Definition at line 103 of file qgrayraster.c.

QT_FT_MAX_GRAY_SPANS

#define QT_FT_MAX_GRAY_SPANS   256

Definition at line 232 of file qgrayraster.c.

QT_FT_MEM_SET

#define QT_FT_MEM_SET	(		d,
			s,
			c
	)		qt_ft_memset( d, s, c )

Definition at line 164 of file qgrayraster.c.

QT_FT_MEM_ZERO

#define QT_FT_MEM_ZERO	(		dest,
			count
	)		QT_FT_MEM_SET( dest, 0, count )

Definition at line 168 of file qgrayraster.c.

qt_ft_memset

#define qt_ft_memset   memset

Definition at line 129 of file qgrayraster.c.

qt_ft_setjmp

#define qt_ft_setjmp   setjmp

Definition at line 131 of file qgrayraster.c.

QT_FT_THROW

#define QT_FT_THROW

(

e

)

QT_FT_ERR_CAT( ErrRaster_, e )

Definition at line 161 of file qgrayraster.c.

QT_FT_TRACE5

#define QT_FT_TRACE5

(

x

)

do { } while ( 0 ) /* nothing */

Definition at line 158 of file qgrayraster.c.

QT_FT_TRACE7

#define QT_FT_TRACE7

(

x

)

do { } while ( 0 ) /* nothing */

Definition at line 159 of file qgrayraster.c.

QT_FT_UDIV

#define QT_FT_UDIV	(		a,
			b
	)

Value:

  ( ( (unsigned long)( a ) * (unsigned long)( b ## _r ) ) >>   \
    ( sizeof( long ) * CHAR_BIT - PIXEL_BITS ) )

Definition at line 213 of file qgrayraster.c.

QT_FT_UDIVPREP

#define QT_FT_UDIVPREP

(

b

)

long b ## _r = (long)( ULONG_MAX >> PIXEL_BITS ) / ( b )

Definition at line 211 of file qgrayraster.c.

QT_FT_UINT_MAX

#define QT_FT_UINT_MAX   UINT_MAX

Definition at line 127 of file qgrayraster.c.

QT_FT_UNUSED

#define QT_FT_UNUSED

(

x

)

(void) x

Definition at line 156 of file qgrayraster.c.

ras

#define ras   (*worker)

Definition at line 178 of file qgrayraster.c.

RAS_ARG

#define RAS_ARG   PWorker worker

Definition at line 172 of file qgrayraster.c.

RAS_ARG_

#define RAS_ARG_   PWorker worker,

Definition at line 173 of file qgrayraster.c.

RAS_VAR

#define RAS_VAR   worker

Definition at line 175 of file qgrayraster.c.

RAS_VAR_

#define RAS_VAR_   worker,

Definition at line 176 of file qgrayraster.c.

SCALED

#define SCALED

(

x

)

(x)

TRUNC

#define TRUNC

(

x

)

(TCoord)( (x) >> PIXEL_BITS )

Definition at line 184 of file qgrayraster.c.

UPSCALE

#define UPSCALE

(

x

)

( (x) * ( ONE_PIXEL >> 6 ) )

Definition at line 188 of file qgrayraster.c.

Typedef Documentation

PCell

typedef struct TCell_* PCell

Definition at line 235 of file qgrayraster.c.

PRaster

typedef struct TRaster_ * PRaster

PWorker

typedef struct TWorker_ * PWorker

QT_FT_PtrDist

typedef ptrdiff_t QT_FT_PtrDist

Definition at line 136 of file qgrayraster.c.

TArea

typedef long TArea

Definition at line 229 of file qgrayraster.c.

TBand

typedef struct TBand_ TBand

TCell

typedef struct TCell_ TCell

TCoord

typedef long TCoord

Definition at line 227 of file qgrayraster.c.

TPos

typedef long TPos

Definition at line 228 of file qgrayraster.c.

TRaster

typedef struct TRaster_ TRaster

TWorker

typedef struct TWorker_ TWorker

Function Documentation

gray_compute_cbox()

static void gray_compute_cbox ( RAS_ARG  )

static

Definition at line 333 of file qgrayraster.c.

References QT_FT_Outline_::n_points, QT_FT_Outline_::points, ras, QT_FT_Vector_::x, and QT_FT_Vector_::y.

Referenced by gray_convert_glyph().

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gray_convert_glyph()

static int gray_convert_glyph ( RAS_ARG  )

static

Definition at line 1645 of file qgrayraster.c.

References error, ErrRaster_Memory_Overflow, ErrRaster_OutOfMemory, gray_compute_cbox(), gray_convert_glyph_inner(), gray_sweep(), TBand_::max, TBand_::min, ras, RAS_VAR, RAS_VAR_, QT_FT_BBox_::xMax, QT_FT_BBox_::xMin, QT_FT_BBox_::yMax, and QT_FT_BBox_::yMin.

Referenced by gray_raster_render().

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gray_convert_glyph_inner()

static int gray_convert_glyph_inner ( RAS_ARG  )

static

Definition at line 1625 of file qgrayraster.c.

References error, ErrRaster_Memory_Overflow, gray_record_cell(), QT_FT_Outline_Decompose(), qt_ft_setjmp, ras, and RAS_VAR.

Referenced by gray_convert_glyph().

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gray_find_cell()

static PCell gray_find_cell ( RAS_ARG  )

static

Definition at line 377 of file qgrayraster.c.

References TCell_::area, TCell_::cover, TCell_::next, qt_ft_longjmp, ras, and TCell_::x.

Referenced by gray_record_cell().

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gray_hline()

static void gray_hline ( RAS_ARG_ TCoord  x, TCoord  y, TPos  area, int  acount  )

static

Definition at line 1182 of file qgrayraster.c.

References area(), PIXEL_BITS, QT_FT_MAX_GRAY_SPANS, QT_FT_OUTLINE_EVEN_ODD_FILL, and ras.

Referenced by gray_sweep().

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gray_init_cells()

static void gray_init_cells ( RAS_ARG_ void *  buffer, long  byte_size  )

static

Definition at line 312 of file qgrayraster.c.

References ras.

Referenced by gray_raster_render().

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gray_move_to()

static int gray_move_to ( const QT_FT_Vector *  to, PWorker  worker  )

static

Definition at line 1115 of file qgrayraster.c.

References gray_record_cell(), gray_start_cell(), ras, TRUNC, UPSCALE, QT_FT_Vector_::x, and QT_FT_Vector_::y.

Referenced by QT_FT_Outline_Decompose().

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gray_raster_done()

static void gray_raster_done ( QT_FT_Raster  raster )

static

Definition at line 1913 of file qgrayraster.c.

gray_raster_new()

static int gray_raster_new ( QT_FT_Raster *  araster )

static

Definition at line 1899 of file qgrayraster.c.

References ErrRaster_Memory_Overflow, and QT_FT_MEM_ZERO.

gray_raster_render()

static int gray_raster_render ( QT_FT_Raster  raster, const QT_FT_Raster_Params *  params  )

static

Definition at line 1794 of file qgrayraster.c.

References assert, TRaster_::band_size, TRaster_::buffer, QT_FT_Bitmap_::buffer, TRaster_::buffer_allocated_size, TRaster_::buffer_size, QT_FT_Outline_::contours, ErrRaster_Invalid_Argument, ErrRaster_Invalid_Mode, ErrRaster_Invalid_Outline, ErrRaster_OutOfMemory, gray_convert_glyph(), gray_init_cells(), gray_render_span(), MINIMUM_POOL_SIZE, QT_FT_Outline_::n_contours, QT_FT_Outline_::n_points, QT_FT_Outline_::points, QT_FT_RASTER_FLAG_AA, QT_FT_RASTER_FLAG_CLIP, QT_FT_RASTER_FLAG_DIRECT, QT_FT_Raster_Span_Func, ras, QT_FT_Bitmap_::rows, TWorker_::skip_spans, QT_FT_Bitmap_::width, and TRaster_::worker.

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gray_raster_reset()

static void gray_raster_reset ( QT_FT_Raster  raster, char *  pool_base, long  pool_size  )

static

Definition at line 1920 of file qgrayraster.c.

References TRaster_::band_size, TRaster_::buffer, TRaster_::buffer_allocated_size, TRaster_::buffer_size, MINIMUM_POOL_SIZE, and TRaster_::worker.

gray_record_cell()

static void gray_record_cell ( RAS_ARG  )

static

Definition at line 416 of file qgrayraster.c.

References TCell_::area, TCell_::cover, gray_find_cell(), ras, and RAS_VAR.

Referenced by gray_convert_glyph_inner(), gray_move_to(), and gray_set_cell().

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gray_render_conic()

static void gray_render_conic ( RAS_ARG_ const QT_FT_Vector *  control, const QT_FT_Vector *  to  )

static

Definition at line 926 of file qgrayraster.c.

References draw(), gray_render_line(), gray_split_conic(), ONE_PIXEL, QT_FT_ABS, ras, RAS_VAR_, split(), TRUNC, UPSCALE, QT_FT_Vector_::x, and QT_FT_Vector_::y.

Referenced by QT_FT_Outline_Decompose().

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gray_render_cubic()

static void gray_render_cubic ( RAS_ARG_ const QT_FT_Vector *  control1, const QT_FT_Vector *  control2, const QT_FT_Vector *  to  )

static

Definition at line 1019 of file qgrayraster.c.

References gray_render_line(), gray_split_cubic(), ONE_PIXEL, QT_FT_ABS, QT_FT_HYPOT, ras, RAS_VAR_, Split, TRUNC, UPSCALE, QT_FT_Vector_::x, and QT_FT_Vector_::y.

Referenced by QT_FT_Outline_Decompose().

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gray_render_line()

static void gray_render_line ( RAS_ARG_ TPos  to_x, TPos  to_y  )

static

Definition at line 602 of file qgrayraster.c.

References area(), End, FRACT, gray_render_scanline(), gray_set_cell(), ONE_PIXEL, QT_FT_DIV_MOD, ras, RAS_VAR_, and TRUNC.

Referenced by gray_render_conic(), gray_render_cubic(), and QT_FT_Outline_Decompose().

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gray_render_scanline()

static void gray_render_scanline ( RAS_ARG_ TCoord  ey, TPos  x1, TCoord  y1, TPos  x2, TCoord  y2  )

static

Definition at line 507 of file qgrayraster.c.

References End, FRACT, gray_set_cell(), ONE_PIXEL, QT_FT_DIV_MOD, ras, RAS_VAR_, and TRUNC.

Referenced by gray_render_line().

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gray_render_span()

static void gray_render_span ( int  count, const QT_FT_Span *  spans, PWorker  worker  )

static

Definition at line 1137 of file qgrayraster.c.

References QT_FT_Span_::coverage, QT_FT_Span_::len, map, Q_FALLTHROUGH, QT_FT_MEM_SET, TWorker_::target, QT_FT_Span_::x, and QT_FT_Span_::y.

Referenced by gray_raster_render().

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gray_set_cell()

static void gray_set_cell ( RAS_ARG_ TCoord  ex, TCoord  ey  )

static

Definition at line 434 of file qgrayraster.c.

References gray_record_cell(), ras, and RAS_VAR.

Referenced by gray_render_line(), gray_render_scanline(), and gray_start_cell().

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gray_split_conic()

static void gray_split_conic ( QT_FT_Vector *  base )

static

Definition at line 906 of file qgrayraster.c.

References base.

Referenced by gray_render_conic().

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gray_split_cubic()

static void gray_split_cubic ( QT_FT_Vector *  base )

static

Definition at line 991 of file qgrayraster.c.

References base, and d.

Referenced by gray_render_cubic().

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gray_start_cell()

static void gray_start_cell ( RAS_ARG_ TCoord  ex, TCoord  ey  )

static

Definition at line 481 of file qgrayraster.c.

References gray_set_cell(), ras, and RAS_VAR_.

Referenced by gray_move_to().

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gray_sweep()

static void gray_sweep ( RAS_ARG_ const QT_FT_Bitmap *  target )

static

Definition at line 1320 of file qgrayraster.c.

References area(), TCell_::area, TCell_::cover, gray_hline(), TCell_::next, ONE_PIXEL, QT_FT_TRACE7, QT_FT_UNUSED, ras, RAS_VAR_, and TCell_::x.

Referenced by gray_convert_glyph().

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q_gray_rendered_spans()

int q_gray_rendered_spans

(

TRaster *

raster

)

Definition at line 300 of file qgrayraster.c.

References TWorker_::skip_spans, and TRaster_::worker.

Referenced by QRasterPaintEnginePrivate::rasterize().

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QT_FT_Outline_Decompose()

static int QT_FT_Outline_Decompose ( const QT_FT_Outline *  outline, void *  user  )

static

Definition at line 1395 of file qgrayraster.c.

References Close(), QT_FT_Outline_::contours, error, ErrRaster_Invalid_Outline, gray_move_to(), gray_render_conic(), gray_render_cubic(), gray_render_line(), QT_FT_Outline_::n_contours, QT_FT_Outline_::points, QT_FT_CURVE_TAG, QT_FT_CURVE_TAG_CONIC, QT_FT_CURVE_TAG_CUBIC, QT_FT_CURVE_TAG_ON, QT_FT_TRACE5, SCALED, tag, QT_FT_Outline_::tags, UPSCALE, QT_FT_Vector_::x, and QT_FT_Vector_::y.

Referenced by gray_convert_glyph_inner().

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Variable Documentation

qt_ft_grays_raster

const QT_FT_Raster_Funcs qt_ft_grays_raster

Initial value:

=
  {
    QT_FT_GLYPH_FORMAT_OUTLINE,
 
    (QT_FT_Raster_New_Func)     gray_raster_new,
    (QT_FT_Raster_Reset_Func)   gray_raster_reset,
    (QT_FT_Raster_Set_Mode_Func)0,
    (QT_FT_Raster_Render_Func)  gray_raster_render,
    (QT_FT_Raster_Done_Func)    gray_raster_done
  }

Definition at line 1960 of file qgrayraster.c.

Referenced by QRasterPaintEngine::~QRasterPaintEngine(), and QRasterPaintEnginePrivate::rasterize().