CSMTextSettings

Tag Info

Tag Number:

Tag Type:

Define

Tag Flash Version:

Unknown SWF Tag:

This tag is defined by the Flash documentation by Adobe

Brief Description:

Define whether CSM text should be used in a previous DefineText, DefineText2 or DefineEditText.

Tag Structure:

struct swf_csmtextsettings {
	swf_tag			f_tag;		/* 74 */
	unsigned short		f_text_id_ref;
	unsigned		f_use_flag_type : 2;
	unsigned		f_grid_fit : 3;
	unsigned		f_reserved : 3;
	long float		f_thickness;
	long float		f_sharpness;
	unsigned char		f_reserved;
};

See Also:

DefineText

DefineText2

DefineEditText

The CSMTextSettings are used to change the rendering mode of glyphs in a DefineText, DefineText2 and DefineEditText.

The f_text_id_ref is a reference to a tag holding some texts which glyphs need to be tweaked with these settings.

The f_use_flag_type defines which of the system (0) or Flash (1) font renderer should be used.

Value	Renderer	Version
0	System	8
1	Internal Flash Type	8

The f_grid_fit defines whether the glyphs should be moved to fit on a grid (i.e. to look less blurry.)

Value	Mode	Version
0	No alignment	8
1	Pixel alignment (for left aligned text only — go figure!)	8
2	¹/₃rd pixel for LCD displays	8

The f_thickness and f_sharpness are used to compute the external and internal cutoff. According to Macromedia they compute these values as follow:

	External Cutoff = ( 0.5 × f_sharpness - f_thickness) × f_font_height
	Internal Cutoff = (-0.5 × f_sharpness - f_thickness) × f_font_height