PDFTron WebViewer Class: GState

new GState()

GState is a class that keeps track of a number of style attributes used to visually define graphical Elements. Each PDF::Element has an associated GState that can be used to query or set various graphics properties. Note: current clipping path is not tracked in the graphics state for efficiency reasons. In most cases tracking of the current clipping path is best left to the client.

Members

<static> Attribute

Type:

number

Properties:

Name	Type	Description
`e_transform`	number
`e_rendering_intent`	number
`e_stroke_cs`	number
`e_stroke_color`	number
`e_fill_cs`	number
`e_fill_color`	number
`e_line_width`	number
`e_line_cap`	number
`e_line_join`	number
`e_flatness`	number
`e_miter_limit`	number
`e_dash_pattern`	number
`e_char_spacing`	number
`e_word_spacing`	number
`e_horizontal_scale`	number
`e_leading`	number
`e_font`	number
`e_font_size`	number
`e_text_render_mode`	number
`e_text_rise`	number
`e_text_knockout`	number
`e_text_pos_offset`	number
`e_blend_mode`	number
`e_opacity_fill`	number
`e_opacity_stroke`	number
`e_alpha_is_shape`	number
`e_soft_mask`	number
`e_smoothnes`	number
`e_auto_stoke_adjust`	number
`e_stroke_overprint`	number
`e_fill_overprint`	number
`e_overprint_mode`	number
`e_transfer_funct`	number
`e_BG_funct`	number
`e_UCR_funct`	number
`e_halftone`	number
`e_null`	number

<static> BlendMode

Type:

number

Properties:

Name	Type	Description
`e_bl_compatible`	number
`e_bl_normal`	number
`e_bl_multiply`	number
`e_bl_screen`	number
`e_bl_difference`	number
`e_bl_darken`	number
`e_bl_lighten`	number
`e_bl_color_dodge`	number
`e_bl_color_burn`	number
`e_bl_exclusion`	number
`e_bl_hard_light`	number
`e_bl_overlay`	number
`e_bl_soft_light`	number
`e_bl_luminosity`	number
`e_bl_hue`	number
`e_bl_saturation`	number
`e_bl_color`	number

<static> LineCap

Type:

number

Properties:

Name	Type	Description
`e_butt_cap`	number
`e_round_cap`	number
`e_square_cap`	number

<static> LineJoin

Type:

number

Properties:

Name	Type	Description
`e_miter_join`	number
`e_round_join`	number
`e_bevel_join`	number

<static> RenderingIntent

Type:

number

Properties:

Name	Type	Description
`e_absolute_colorimetric`	number
`e_relative_colorimetric`	number
`e_saturation`	number
`e_perceptual`	number

<static> TextRenderingMode

Type:

number

Properties:

Name	Type	Description
`e_fill_text`	number
`e_stroke_text`	number
`e_fill_stroke_text`	number
`e_invisible_text`	number
`e_fill_clip_text`	number
`e_stroke_clip_text`	number
`e_fill_stroke_clip_text`	number
`e_clip_text`	number

Methods

<static> getRenderingIntentType(name)

A utility function that maps a string representing a rendering intent to RenderingIntent type.

Parameters:

Name	Type	Description
`name`	string	string that represents the rendering intent to get.

Returns:

A promise that resolves to the color rendering intent type matching the specified string

Type: Promise.<number>

Example

Return value enum:
<pre>
PDFNet.GState.RenderingIntent = {
	e_absolute_colorimetric : 0
	e_relative_colorimetric : 1
	e_saturation : 2
	e_perceptual : 3
}
</pre>

concat(a, b, c, d, h, v)

Concatenate the given matrix expressed in its values to the transformation matrix of this element.

Parameters:

Name	Type	Description
`a`	number	horizontal 'scaling' component of the new text matrix.
`b`	number	'rotation' component of the new text matrix.
`c`	number	'rotation' component of the new text matrix.
`d`	number	vertical 'scaling' component of the new text matrix.
`h`	number	horizontal translation component of the new text matrix.
`v`	number	vertical translation component of the new text matrix.

Returns:

Type: Promise.<void>

concatMatrix(mtx)

Concatenate the given matrix to the transformation matrix of this element.

Parameters:

Name	Type	Description
`mtx`	Core.PDFNet.Matrix2D	Matrix2D object to concatenate the current matrix with.

Returns:

Type: Promise.<void>

getAISFlag()

Returns:

A promise that resolves to the alpha source flag ('alpha is shape'), specifying whether the current soft mask and alpha constant are to be interpreted as shape values (true) or opacity values (false).

Type: Promise.<boolean>

getAutoStrokeAdjust()

Returns:

A promise that resolves to a flag specifying whether stroke adjustment is enabled in the graphics state. Corresponds to the /SA key within the ExtGState's dictionary.

Type: Promise.<boolean>

getBlackGenFunct()

Returns:

A promise that resolves to currently selected black-generation function (NULL by default) used during conversion between DeviceRGB and DeviceCMYK. Corresponds to the /BG key within the ExtGState's dictionary.

Type: Promise.<Core.PDFNet.Obj>

getBlendMode()

Returns:

A promise that resolves to the current blend mode to be used in the transparent imaging model. Corresponds to the /BM key within the ExtGState's dictionary.

Type: Promise.<number>

Example

Return value enum:
<pre>
PDFNet.GState.BlendMode = {
	e_bl_compatible : 0
	e_bl_normal : 1
	e_bl_multiply : 2
	e_bl_screen : 3
	e_bl_difference : 4
	e_bl_darken : 5
	e_bl_lighten : 6
	e_bl_color_dodge : 7
	e_bl_color_burn : 8
	e_bl_exclusion : 9
	e_bl_hard_light : 10
	e_bl_overlay : 11
	e_bl_soft_light : 12
	e_bl_luminosity : 13
	e_bl_hue : 14
	e_bl_saturation : 15
	e_bl_color : 16
}
</pre>

getCharSpacing()

Returns:

A promise that resolves to currently selected character spacing. The character spacing parameter is a number specified in unscaled text space units. When the glyph for each character in the string is rendered, the character spacing is added to the horizontal or vertical component of the glyph's displacement, depending on the writing mode. See Section 5.2.1 in PDF Reference Manual for details.

Type: Promise.<number>

getFillColor()

Returns:

A promise that resolves to a color value/point represented in the current fill color space

Type: Promise.<Core.PDFNet.ColorPt>

getFillColorSpace()

Returns:

A promise that resolves to color space used for filling

Type: Promise.<Core.PDFNet.ColorSpace>

getFillOpacity()

Returns:

A promise that resolves to the opacity value for painting operations other than stroking. Returns the value of the /ca key in the ExtGState dictionary. If the value is not found, the default value of 1 is returned.

Type: Promise.<number>

getFillOverprint()

Returns:

A promise that resolves to whether overprint is enabled for fill painting operations. Corresponds to the /op key within the ExtGState's dictionary.

Type: Promise.<boolean>

getFillPattern()

Returns:

A promise that resolves to the pattern color of currently selected pattern color space used for filling.

Type: Promise.<Core.PDFNet.PatternColor>

getFlatness()

Returns:

A promise that resolves to current value of flatness tolerance Flatness is a number in the range 0 to 100; a value of 0 specifies the output device's default flatness tolerance. The flatness tolerance controls the maximum permitted distance in device pixels between the mathematically correct path and an approximation constructed from straight line segments.

Type: Promise.<number>

getFont()

Returns:

A promise that resolves to currently selected font

Type: Promise.<Core.PDFNet.Font>

getFontSize()

Returns:

A promise that resolves to the font size

Type: Promise.<number>

getHalftone()

Returns:

A promise that resolves to currently selected halftone dictionary or stream (NULL by default). Corresponds to the /HT key within the ExtGState's dictionary. Halftoning is a process by which continuous-tone colors are approximated on an output device that can achieve only a limited number of discrete colors.

Type: Promise.<Core.PDFNet.Obj>

getHorizontalScale()

Returns:

A promise that resolves to currently selected horizontal scale The horizontal scaling parameter adjusts the width of glyphs by stretching or compressing them in the horizontal direction. Its value is specified as a percentage of the normal width of the glyphs, with 100 being the normal width. The scaling always applies to the horizontal coordinate in text space, independently of the writing mode. See Section 5.2.3 in PDF Reference Manual for details.

Type: Promise.<number>

getLeading()

Returns:

A promise that resolves to currently selected leading parameter The leading parameter is measured in unscaled text space units. It specifies the vertical distance between the baselines of adjacent lines of text. See Section 5.2.4 in PDF Reference Manual for details.

Type: Promise.<number>

getLineCap()

Returns:

A promise that resolves to currently selected LineCap style The line cap style specifies the shape to be used at the ends of open sub-paths (and dashes, if any) when they are stroked.

Type: Promise.<number>

Example

Return value enum:
<pre>
PDFNet.GState.LineCap = {
	e_butt_cap : 0
	e_round_cap : 1
	e_square_cap : 2
}
</pre>

getLineJoin()

Returns:

A promise that resolves to currently selected LineJoin style The line join style specifies the shape to be used at the corners of paths that are stroked.

Type: Promise.<number>

Example

Return value enum:
<pre>
PDFNet.GState.LineJoin = {
	e_miter_join : 0
	e_round_join : 1
	e_bevel_join : 2
}
</pre>

getLineWidth()

Returns:

A promise that resolves to the thickness of the line used to stroke a path. Note: A line width of 0 denotes the thinnest line that can be rendered at device resolution: 1 device pixel wide.

Type: Promise.<number>

getMiterLimit()

Returns:

A promise that resolves to current value of miter limit. The miter limit imposes a maximum on the ratio of the miter length to the line width. When the limit is exceeded, the join is converted from a miter to a bevel.

Type: Promise.<number>

getOverprintMode()

Returns:

A promise that resolves to the overprint mode used by this graphics state. Corresponds to the /OPM key within the ExtGState's dictionary.

Type: Promise.<number>

getPhase()

Returns:

A promise that resolves to the phase of the currently selected dash pattern. dash phase is expressed in user space units.

Type: Promise.<number>

getRenderingIntent()

Returns:

A promise that resolves to the color intent to be used for rendering the Element

Type: Promise.<number>

Example

Return value enum:
<pre>
PDFNet.GState.RenderingIntent = {
	e_absolute_colorimetric : 0
	e_relative_colorimetric : 1
	e_saturation : 2
	e_perceptual : 3
}
</pre>

getSmoothnessTolerance()

Returns:

A promise that resolves to the smoothness tolerance used to control the quality of smooth shading. Corresponds to the /SM key within the ExtGState's dictionary. The allowable error (or tolerance) is expressed as a fraction of the range of the color component, from 0.0 to 1.0.

Type: Promise.<number>

getSoftMask()

Returns:

A promise that resolves to associated soft mask. NULL if the soft mask is not selected or SDF dictionary representing the soft mask otherwise.

Type: Promise.<Core.PDFNet.Obj>

getSoftMaskTransform()

Returns:

A promise that resolves to the soft mask transform. This is the transformation matrix at the moment the soft mask is established in the graphics state with the gs operator. This information is only relevant when applying the soft mask that may be specified in the graphics state to the current element.

Type: Promise.<Core.PDFNet.Matrix2D>

getStrokeColor()

Returns:

A promise that resolves to a color value/point represented in the current stroke color space

Type: Promise.<Core.PDFNet.ColorPt>

getStrokeColorSpace()

Returns:

A promise that resolves to color space used for stroking

Type: Promise.<Core.PDFNet.ColorSpace>

getStrokeOpacity()

Returns:

A promise that resolves to opacity value for stroke painting operations for paths and glyph outlines. Returns the value of the /CA key in the ExtGState dictionary. If the value is not found, the default value of 1 is returned.

Type: Promise.<number>

getStrokeOverprint()

Returns:

A promise that resolves to whether overprint is enabled for stroke painting operations. Corresponds to the /OP key within the ExtGState's dictionary.

Type: Promise.<boolean>

getStrokePattern()

Returns:

A promise that resolves to the SDF pattern object of currently selected PatternColorSpace used for stroking.

Type: Promise.<Core.PDFNet.PatternColor>

getTextRenderMode()

Returns:

A promise that resolves to current text rendering mode. The text rendering mode determines whether showing text causes glyph outlines to be stroked, filled, used as a clipping boundary, or some combination of the three. See Section 5.2.5 in PDF Reference Manual for details..

Type: Promise.<number>

Example

Return value enum:
<pre>
PDFNet.GState.TextRenderingMode = {
	e_fill_text : 0
	e_stroke_text : 1
	e_fill_stroke_text : 2
	e_invisible_text : 3
	e_fill_clip_text : 4
	e_stroke_clip_text : 5
	e_fill_stroke_clip_text : 6
	e_clip_text : 7
}
</pre>

getTextRise()

Returns:

A promise that resolves to current value of text rise Text rise specifies the distance, in unscaled text space units, to move the baseline up or down from its default location. Positive values of text rise move the baseline up

Type: Promise.<number>

getTransferFunct()

Returns:

A promise that resolves to currently selected transfer function (NULL by default) used during color conversion process. A transfer function adjusts the values of color components to compensate for nonlinear response in an output device and in the human eye. Corresponds to the /TR key within the ExtGState's dictionary.

Type: Promise.<Core.PDFNet.Obj>

getTransform()

Returns:

A promise that resolves to the transformation matrix for this element. Note: If you are looking for a matrix that maps coordinates to the initial user space see Element::GetCTM().

Type: Promise.<Core.PDFNet.Matrix2D>

getUCRFunct()

Returns:

A promise that resolves to currently selected undercolor-removal function (NULL by default) used during conversion between DeviceRGB and DeviceCMYK. Corresponds to the /UCR key within the ExtGState's dictionary.

Type: Promise.<Core.PDFNet.Obj>

getWordSpacing()

Returns:

A promise that resolves to currently selected word spacing Word spacing works the same way as character spacing, but applies only to the space character (char code 32). See Section 5.2.2 in PDF Reference Manual for details.

Type: Promise.<number>

isTextKnockout()

Returns:

A promise that resolves to a boolean flag that determines the text element is considered elementary objects for purposes of color compositing in the transparent imaging model.

Type: Promise.<boolean>

setAISFlag(AIS)

specifies if the alpha is to be interpreted as a shape or opacity mask. The alpha source flag ('alpha is shape'), specifies whether the current soft mask and alpha constant are to be interpreted as shape values (true) or opacity values (false).

Parameters:

Name	Type	Description
`AIS`	boolean	true for interpretation as shape values or false for opacity values

Returns:

Type: Promise.<void>

setAutoStrokeAdjust(SA)

Specify whether to apply automatic stroke adjustment. Corresponds to the /SA key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`SA`	boolean	if true automatic stroke adjustment will be applied.

Returns:

Type: Promise.<void>

setBlackGenFunct(BG)

Sets black-generation function used during conversion between DeviceRGB and DeviceCMYK. Corresponds to the /BG key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`BG`	Core.PDFNet.Obj	SDF/Cos black-generation function or name

Returns:

Type: Promise.<void>

setBlendMode(BM)

Sets the current blend mode to be used in the transparent imaging model. Corresponds to the /BM key within the ExtGState's dictionary.

Parameters:

Name Type Description

Name	Type	Description
`BM`	number	PDFNet.GState.BlendMode = { e_bl_compatible : 0 e_bl_normal : 1 e_bl_multiply : 2 e_bl_screen : 3 e_bl_difference : 4 e_bl_darken : 5 e_bl_lighten : 6 e_bl_color_dodge : 7 e_bl_color_burn : 8 e_bl_exclusion : 9 e_bl_hard_light : 10 e_bl_overlay : 11 e_bl_soft_light : 12 e_bl_luminosity : 13 e_bl_hue : 14 e_bl_saturation : 15 e_bl_color : 16 } New blending mode type. // C# gs.SetBlendMode(GState.BlendMode.e_lighten); // C++ gs->SetBlendMode(GState::e_lighten);

BM

number

PDFNet.GState.BlendMode = {
	e_bl_compatible : 0
	e_bl_normal : 1
	e_bl_multiply : 2
	e_bl_screen : 3
	e_bl_difference : 4
	e_bl_darken : 5
	e_bl_lighten : 6
	e_bl_color_dodge : 7
	e_bl_color_burn : 8
	e_bl_exclusion : 9
	e_bl_hard_light : 10
	e_bl_overlay : 11
	e_bl_soft_light : 12
	e_bl_luminosity : 13
	e_bl_hue : 14
	e_bl_saturation : 15
	e_bl_color : 16
}

New blending mode type.

// C#
gs.SetBlendMode(GState.BlendMode.e_lighten);

// C++ 
gs->SetBlendMode(GState::e_lighten);

Returns:

Type: Promise.<void>

setCharSpacing(char_spacing)

Sets character spacing.

Parameters:

Name	Type	Description
`char_spacing`	number	a number specified in unscaled text space units. When the glyph for each character in the string is rendered, the character spacing is added to the horizontal or vertical component of the glyph's displacement, depending on the writing mode. See Section 5.2.1 in PDF Reference Manual for details.

Returns:

Type: Promise.<void>

setDashPattern(dash_array, phase)

Sets the dash pattern used to stroke paths. The line dash pattern controls the pattern of dashes and gaps used to stroke paths. It is specified by a dash array and a dash phase. The elements of both the dash array and the dash phase are expressed in user space units.

Parameters:

Name	Type	Description
`dash_array`	Array.<number>	the numbers that specify the lengths of alternating dashes and gaps.
`phase`	number	specifies the distance into the dash pattern at which to start the dash.

Returns:

Type: Promise.<void>

setFillColor(pattern, c)

Set the fill color to the given uncolored tiling pattern.

Parameters:

Name	Type	Description
`pattern`	Core.PDFNet.PatternColor	PatternColor (PatternType = 1 and PaintType = 2) object.
`c`	Core.PDFNet.ColorPt	is a color in the pattern's underlying color space. Note: The currently selected fill color space must be Pattern color space.

Returns:

Type: Promise.<void>

setFillColorSpace(cs)

Sets the color space used for filling operations

Parameters:

Name	Type	Description
`cs`	Core.PDFNet.ColorSpace	ColorSpace object to use for filling operations

Returns:

Type: Promise.<void>

setFillColorWithColorPt(c)

Sets the color value/point used for filling operations.

Parameters:

Name	Type	Description
`c`	Core.PDFNet.ColorPt	the color used for filling operations The color value must be represented in the currently selected color space used for filling.

Returns:

Type: Promise.<void>

setFillColorWithPattern(pattern)

Set the fill color to the given tiling pattern.

Parameters:

Name	Type	Description
`pattern`	Core.PDFNet.PatternColor	New pattern color. Note: The currently selected fill color space must be Pattern color space.

Returns:

Type: Promise.<void>

setFillOpacity(ca)

Sets the opacity value for painting operations other than stroking. Corresponds to the value of the /ca key in the ExtGState dictionary.

Parameters:

Name	Type	Description
`ca`	number	value to set fill opacity to

Returns:

Type: Promise.<void>

setFillOverprint(op)

specifies if overprint is enabled for fill operations. Corresponds to the /op key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`op`	boolean	true to enable overprint for fill, false to disable.

Returns:

Type: Promise.<void>

setFlatness(flatness)

Sets the value of flatness tolerance.

Parameters:

Name	Type	Description
`flatness`	number	is a number in the range 0 to 100; a value of 0 specifies the output device's default flatness tolerance. The flatness tolerance controls the maximum permitted distance in device pixels between the mathematically correct path and an approximation constructed from straight line segments.

Returns:

Type: Promise.<void>

setFont(font, font_sz)

Sets the font and font size used to draw text.

Parameters:

Name	Type	Description
`font`	Core.PDFNet.Font	Font to draw the text with
`font_sz`	number	size of the font to draw the text with

Returns:

Type: Promise.<void>

setHalftone(HT)

Sets currently selected halftone dictionary or stream (NULL by default). Corresponds to the /HT key within the ExtGState's dictionary. Halftoning is a process by which continuous-tone colors are approximated on an output device that can achieve only a limited number of discrete colors.

Parameters:

Name	Type	Description
`HT`	Core.PDFNet.Obj	SDF/Cos halftone dictionary, stream, or name

Returns:

Type: Promise.<void>

setHorizontalScale(hscale)

Sets horizontal scale. The horizontal scaling parameter adjusts the width of glyphs by stretching or compressing them in the horizontal direction. Its value is specified as a percentage of the normal width of the glyphs, with 100 being the normal width. The scaling always applies to the horizontal coordinate in text space, independently of the writing mode. See Section 5.2.3 in PDF Reference Manual for details.

Parameters:

Name	Type	Description
`hscale`	number	value to set horizontal scale to.

Returns:

Type: Promise.<void>

setLeading(leading)

Sets the leading parameter. The leading parameter is measured in unscaled text space units. It specifies the vertical distance between the baselines of adjacent lines of text. See Section 5.2.4 in PDF Reference Manual for details.

Parameters:

Name	Type	Description
`leading`	number	number representing vertical distance between lines of text

Returns:

Type: Promise.<void>

setLineCap(cap)

Sets LineCap style property. The line cap style specifies the shape to be used at the ends of open subpaths (and dashes, if any) when they are stroked.

Parameters:

Name	Type	Description
`cap`	number	PDFNet.GState.LineCap = { e_butt_cap : 0 e_round_cap : 1 e_square_cap : 2 }

Returns:

Type: Promise.<void>

setLineJoin(join)

Sets LineJoin style property. The line join style specifies the shape to be used at the corners of paths that are stroked.

Parameters:

Name	Type	Description
`join`	number	PDFNet.GState.LineJoin = { e_miter_join : 0 e_round_join : 1 e_bevel_join : 2 }

Returns:

Type: Promise.<void>

setLineWidth(width)

Sets the thickness of the line used to stroke a path.

Parameters:

Name	Type	Description
`width`	number	a non-negative number expressed in user space units. A line width of 0 denotes the thinnest line that can be rendered at device resolution: 1 device pixel wide.

Returns:

Type: Promise.<void>

setMiterLimit(miter_limit)

Sets miter limit.

Parameters:

Name	Type	Description
`miter_limit`	number	A number that imposes a maximum on the ratio of the miter length to the line width. When the limit is exceeded, the join is converted from a miter to a bevel.

Returns:

Type: Promise.<void>

setOverprintMode(OPM)

Sets the overprint mode. Corresponds to the /OPM key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`OPM`	number	overprint mode.

Returns:

Type: Promise.<void>

setRenderingIntent(intent)

Sets the color intent to be used for rendering the Element.

Parameters:

Name	Type	Description
`intent`	number	PDFNet.GState.RenderingIntent = { e_absolute_colorimetric : 0 e_relative_colorimetric : 1 e_saturation : 2 e_perceptual : 3 }

Returns:

Type: Promise.<void>

setSmoothnessTolerance(SM)

Sets the smoothness tolerance used to control the quality of smooth shading. Corresponds to the /SM key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`SM`	number

Returns:

Type: Promise.<void>

setSoftMask(SM)

Sets the soft mask of the extended graphics state. Corresponds to the /SMask key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`SM`	Core.PDFNet.Obj	SDF/Cos black-generation function or name

Returns:

Type: Promise.<void>

setStrokeColor(pattern, c)

Set the stroke color to the given uncolored tiling pattern.

Parameters:

Name	Type	Description
`pattern`	Core.PDFNet.PatternColor	pattern (PatternType = 1 and PaintType = 2) object.
`c`	Core.PDFNet.ColorPt	is a color in the pattern's underlying color space. Note: The currently selected stroke color space must be Pattern color space.

Returns:

Type: Promise.<void>

setStrokeColorSpace(cs)

Sets the color space used for stroking operations

Parameters:

Name	Type	Description
`cs`	Core.PDFNet.ColorSpace	ColorSpace object to use for stroking operations

Returns:

Type: Promise.<void>

setStrokeColorWithColorPt(c)

Sets the color value/point used for stroking operations.

Parameters:

Name	Type	Description
`c`	Core.PDFNet.ColorPt	is the color used for stroking operations Note: The color value must be represented in the currently selected color space used for stroking.

Returns:

Type: Promise.<void>

setStrokeColorWithPattern(pattern)

Set the stroke color to the given tiling pattern.

Parameters:

Name	Type	Description
`pattern`	Core.PDFNet.PatternColor	SDF pattern object. Note: The currently selected stroke color space must be Pattern color space.

Returns:

Type: Promise.<void>

setStrokeOpacity(ca)

Sets opacity value for stroke painting operations for paths and glyph outlines. Corresponds to the value of the /CA key in the ExtGState dictionary.

Parameters:

Name	Type	Description
`ca`	number	value to set stroke opacity to

Returns:

Type: Promise.<void>

setStrokeOverprint(OP)

specifies if overprint is enabled for stroke operations. Corresponds to the /OP key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`OP`	boolean	true to enable overprint for stroke, false to disable.

Returns:

Type: Promise.<void>

setTextKnockout(knockout)

Mark the object as elementary for purposes of color compositing in the transparent imaging model.

Parameters:

Name	Type	Description
`knockout`	boolean	Whether an object is elementary or not.

Returns:

Type: Promise.<void>

setTextRenderMode(rmode)

Sets text rendering mode. The text rendering mode determines whether showing text causes glyph outlines to be stroked, filled, used as a clipping boundary, or some combination of the three. See Section 5.2.5 in PDF Reference Manual for details..

Parameters:

Name	Type	Description
`rmode`	number	PDFNet.GState.TextRenderingMode = { e_fill_text : 0 e_stroke_text : 1 e_fill_stroke_text : 2 e_invisible_text : 3 e_fill_clip_text : 4 e_stroke_clip_text : 5 e_fill_stroke_clip_text : 6 e_clip_text : 7 } the mode that text will rendered with. rmode can take the following values: PDFNet.GState.TextRenderingMode = { e_fill_text : 0, e_stroke_text : 1, e_fill_stroke_text : 2, e_invisible_text : 3, e_fill_clip_text : 4, e_stroke_clip_text : 5, e_fill_stroke_clip_text : 6, e_clip_text : 7 }

Returns:

Type: Promise.<void>

setTextRise(rise)

Sets text rise. Text rise specifies the distance, in unscaled text space units, to move the baseline up or down from its default location. Positive values of text rise move the baseline up

Parameters:

Name	Type	Description
`rise`	number	distance to move baseline up. Negative values move baseline down.

Returns:

Type: Promise.<void>

setTransferFunct(TR)

Sets transfer function used during color conversion process. A transfer function adjusts the values of color components to compensate for nonlinear response in an output device and in the human eye. Corresponds to the /TR key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`TR`	Core.PDFNet.Obj	SDF/Cos transfer function, array, or name

Returns:

Type: Promise.<void>

setTransform(a, b, c, d, h, v)

Set the transformation matrix associated with this element. A transformation matrix in PDF is specified by six numbers, usually in the form of an array containing six elements. In its most general form, this array is denoted [a b c d h v]; it can represent any linear transformation from one coordinate system to another. For more information about PDF matrices please refer to section 4.2.2 'Common Transformations' in PDF Reference Manual, and to documentation for pdftron::Common::Matrix2D class.

Parameters:

Name	Type	Description
`a`	number	horizontal 'scaling' component of the new text matrix.
`b`	number	'rotation' component of the new text matrix.
`c`	number	'rotation' component of the new text matrix.
`d`	number	vertical 'scaling' component of the new text matrix.
`h`	number	horizontal translation component of the new text matrix.
`v`	number	vertical translation component of the new text matrix.

Returns:

Type: Promise.<void>

setTransformMatrix(mtx)

Set the transformation matrix associated with this element.

Parameters:

Name	Type	Description
`mtx`	Core.PDFNet.Matrix2D	The new transformation for this text element. Note: in PDF associating a transformation matrix with an element ('cm' operator) will also affect all subsequent elements.

Returns:

Type: Promise.<void>

setUCRFunct(UCR)

Sets undercolor-removal function used during conversion between DeviceRGB and DeviceCMYK. Corresponds to the /UCR key within the ExtGState's dictionary.

Parameters:

Name	Type	Description
`UCR`	Core.PDFNet.Obj	SDF/Cos undercolor-removal function or name

Returns:

Type: Promise.<void>

setWordSpacing(word_spacing)

Sets word spacing.

Parameters:

Name	Type	Description
`word_spacing`	number	a number specified in unscaled text space units. Word spacing works the same way as character spacing, but applies only to the space character (char code 32). See Section 5.2.2 in PDF Reference Manual for details.

Returns:

Type: Promise.<void>