ftrend1.c File Reference

#include <freetype/internal/ftdebug.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/ftoutln.h>
#include "ftrend1.h"
#include "ftraster.h"
#include "rasterrs.h"

Include dependency graph for ftrend1.c:

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

Go to the source code of this file.

Functions
static FT_Error	ft_raster1_init (FT_Renderer render)
static FT_Error	ft_raster1_set_mode (FT_Renderer render, FT_ULong mode_tag, FT_Pointer data)
static FT_Error	ft_raster1_transform (FT_Renderer render, FT_GlyphSlot slot, const FT_Matrix *matrix, const FT_Vector *delta)
static void	ft_raster1_get_cbox (FT_Renderer render, FT_GlyphSlot slot, FT_BBox *cbox)
static FT_Error	ft_raster1_render (FT_Renderer render, FT_GlyphSlot slot, FT_Render_Mode mode, const FT_Vector *origin)

Function Documentation

ft_raster1_get_cbox()

static void ft_raster1_get_cbox ( FT_Renderer  render, FT_GlyphSlot  slot, FT_BBox *  cbox  )

static

Definition at line 80 of file ftrend1.c.

  {
    FT_ZERO( cbox );
 
    if ( slot->format == render->glyph_format )
      FT_Outline_Get_CBox( &slot->outline, cbox );
  }

ft_raster1_init()

static FT_Error ft_raster1_init ( FT_Renderer  render )

static

Definition at line 30 of file ftrend1.c.

  {
    render->clazz->raster_class->raster_reset( render->raster, NULL, 0 );
 
    return FT_Err_Ok;
  }

ft_raster1_render()

static FT_Error ft_raster1_render ( FT_Renderer  render, FT_GlyphSlot  slot, FT_Render_Mode  mode, const FT_Vector *  origin  )

static

Definition at line 93 of file ftrend1.c.

  {
    FT_Error     error   = FT_Err_Ok;
    FT_Outline*  outline = &slot->outline;
    FT_Bitmap*   bitmap  = &slot->bitmap;
    FT_Memory    memory  = render->root.memory;
    FT_Pos       x_shift = 0;
    FT_Pos       y_shift = 0;
 
    FT_Raster_Params  params;
 
 
    /* check glyph image format */
    if ( slot->format != render->glyph_format )
    {
      error = FT_THROW( Invalid_Argument );
      goto Exit;
    }
 
    /* check rendering mode */
    if ( mode != FT_RENDER_MODE_MONO )
    {
      /* raster1 is only capable of producing monochrome bitmaps */
      return FT_THROW( Cannot_Render_Glyph );
    }
 
    /* release old bitmap buffer */
    if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
    {
      FT_FREE( bitmap->buffer );
      slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
    }
 
    if ( ft_glyphslot_preset_bitmap( slot, mode, origin ) )
    {
      error = FT_THROW( Raster_Overflow );
      goto Exit;
    }
 
    /* allocate new one */
    if ( FT_ALLOC_MULT( bitmap->buffer, bitmap->rows, bitmap->pitch ) )
      goto Exit;
 
    slot->internal->flags |= FT_GLYPH_OWN_BITMAP;
 
    x_shift = -slot->bitmap_left * 64;
    y_shift = ( (FT_Int)bitmap->rows - slot->bitmap_top ) * 64;
 
    if ( origin )
    {
      x_shift += origin->x;
      y_shift += origin->y;
    }
 
    /* translate outline to render it into the bitmap */
    if ( x_shift || y_shift )
      FT_Outline_Translate( outline, x_shift, y_shift );
 
    /* set up parameters */
    params.target = bitmap;
    params.source = outline;
    params.flags  = FT_RASTER_FLAG_DEFAULT;
 
    /* render outline into the bitmap */
    error = render->raster_render( render->raster, &params );
 
  Exit:
    if ( !error )
      /* everything is fine; the glyph is now officially a bitmap */
      slot->format = FT_GLYPH_FORMAT_BITMAP;
    else if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
    {
      FT_FREE( bitmap->buffer );
      slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
    }
 
    if ( x_shift || y_shift )
      FT_Outline_Translate( outline, -x_shift, -y_shift );
 
    return error;
  }

ft_raster1_set_mode()

static FT_Error ft_raster1_set_mode ( FT_Renderer  render, FT_ULong  mode_tag, FT_Pointer  data  )

static

Definition at line 40 of file ftrend1.c.

  {
    /* we simply pass it to the raster */
    return render->clazz->raster_class->raster_set_mode( render->raster,
                                                         mode_tag,
                                                         data );
  }

ft_raster1_transform()

static FT_Error ft_raster1_transform ( FT_Renderer  render, FT_GlyphSlot  slot, const FT_Matrix *  matrix, const FT_Vector *  delta  )

static

Definition at line 53 of file ftrend1.c.

  {
    FT_Error error = FT_Err_Ok;
 
 
    if ( slot->format != render->glyph_format )
    {
      error = FT_THROW( Invalid_Argument );
      goto Exit;
    }
 
    if ( matrix )
      FT_Outline_Transform( &slot->outline, matrix );
 
    if ( delta )
      FT_Outline_Translate( &slot->outline, delta->x, delta->y );
 
  Exit:
    return error;
  }