pdextendedgraphicsstate.java

非常有用的操作pdf文件的java源码

        {
            retval = new PDLineDashPattern( dp );
        }
        return retval;
    }

    /**
     * This will set the dash pattern for the graphics state.
     *
     * @param dashPattern The dash pattern
     */
    public void setLineDashPattern( PDLineDashPattern dashPattern )
    {
        graphicsState.setItem( D, dashPattern.getCOSObject() );
    }

    /**
     * This will get the rendering intent.
     *
     * @return null or the RI value in the dictionary.
     */
    public String getRenderingIntent()
    {
        return graphicsState.getNameAsString( "RI" );
    }

    /**
     * This will set the rendering intent for the graphics state.
     *
     * @param ri The new rendering intent
     */
    public void setRenderingIntent( String ri )
    {
        graphicsState.setName( "RI", ri );
    }

    /**
     * This will get the overprint control.
     *
     * @return The overprint control or null if one has not been set.
     */
    public boolean getStrokingOverprintControl()
    {
        return graphicsState.getBoolean( OP, false );
    }

    /**
     * This will get the overprint control(OP).
     *
     * @param op The overprint control.
     */
    public void setStrokingOverprintControl( boolean op )
    {
        graphicsState.setBoolean( OP, op );
    }

    /**
     * This will get the overprint control for non stroking operations.  If this
     * value is null then the regular overprint control value will be returned.
     *
     * @return The overprint control or null if one has not been set.
     */
    public boolean getNonStrokingOverprintControl()
    {
        return graphicsState.getBoolean( OP_NS, getStrokingOverprintControl() );
    }

    /**
     * This will get the overprint control(OP).
     *
     * @param op The overprint control.
     */
    public void setNonStrokingOverprintControl( boolean op )
    {
        graphicsState.setBoolean( OP_NS, op );
    }

    /**
     * This will get the overprint control mode.
     *
     * @return The overprint control mode or null if one has not been set.
     */
    public Float getOverprintMode()
    {
        return getFloatItem( OPM );
    }

    /**
     * This will get the overprint mode(OPM).
     *
     * @param overprintMode The overprint mode
     */
    public void setOverprintMode( Float overprintMode )
    {
        setFloatItem( OPM, overprintMode );
    }

    /**
     * This will get the font setting of the graphics state.
     *
     * @return The font setting.
     */
    public PDFontSetting getFontSetting()
    {
        PDFontSetting setting = null;
        COSArray font = (COSArray)graphicsState.getDictionaryObject( FONT );
        if( font != null )
        {
            setting = new PDFontSetting( font );
        }
        return setting;
    }

    /**
     * This will set the font setting for this graphics state.
     *
     * @param fs The new font setting.
     */
    public void setFontSetting( PDFontSetting fs )
    {
        graphicsState.setItem( FONT, fs );
    }

    /**
     * This will get the flatness tolerance.
     *
     * @return The flatness tolerance or null if one has not been set.
     */
    public Float getFlatnessTolerance()
    {
        return getFloatItem( FL );
    }

    /**
     * This will get the flatness tolerance.
     *
     * @param flatness The new flatness tolerance
     */
    public void setFlatnessTolerance( Float flatness )
    {
        setFloatItem( FL, flatness );
    }

    /**
     * This will get the smothness tolerance.
     *
     * @return The smothness tolerance or null if one has not been set.
     */
    public Float getSmoothnessTolerance()
    {
        return getFloatItem( SM );
    }

    /**
     * This will get the smoothness tolerance.
     *
     * @param smoothness The new smoothness tolerance
     */
    public void setSmoothnessTolerance( Float smoothness )
    {
        setFloatItem( SM, smoothness );
    }

    /**
     * This will get the automatic stroke adjustment flag.
     *
     * @return The automatic stroke adjustment flag or null if one has not been set.
     */
    public boolean getAutomaticStrokeAdjustment()
    {
        return graphicsState.getBoolean( SA,false );
    }

    /**
     * This will get the automatic stroke adjustment flag.
     *
     * @param sa The new automatic stroke adjustment flag.
     */
    public void setAutomaticStrokeAdjustment( boolean sa )
    {
        graphicsState.setBoolean( SA, sa );
    }

    /**
     * This will get the stroking alpha constant.
     *
     * @return The stroking alpha constant or null if one has not been set.
     */
    public Float getStrokingAlpaConstant()
    {
        return getFloatItem( CA );
    }

    /**
     * This will get the stroking alpha constant.
     *
     * @param alpha The new stroking alpha constant.
     */
    public void setStrokingAlphaConstant( Float alpha )
    {
        setFloatItem( CA, alpha );
    }

    /**
     * This will get the non stroking alpha constant.
     *
     * @return The non stroking alpha constant or null if one has not been set.
     */
    public Float getNonStrokingAlpaConstant()
    {
        return getFloatItem( CA_NS );
    }

    /**
     * This will get the non stroking alpha constant.
     *
     * @param alpha The new non stroking alpha constant.
     */
    public void setNonStrokingAlphaConstant( Float alpha )
    {
        setFloatItem( CA_NS, alpha );
    }

    /**
     * This will get the alpha source flag.
     *
     * @return The alpha source flag.
     */
    public boolean getAlphaSourceFlag()
    {
        return graphicsState.getBoolean( AIS, false );
    }

    /**
     * This will get the alpha source flag.
     *
     * @param alpha The alpha source flag.
     */
    public void setAlphaSourceFlag( boolean alpha )
    {
        graphicsState.setBoolean( AIS, alpha );
    }

    /**
     * This will get the text knockout flag.
     *
     * @return The text knockout flag.
     */
    public boolean getTextKnockoutFlag()
    {
        return graphicsState.getBoolean( TK,true );
    }

    /**
     * This will get the text knockout flag.
     *
     * @param tk The text knockout flag.
     */
    public void setTextKnockoutFlag( boolean tk )
    {
        graphicsState.setBoolean( TK, tk );
    }

    /**
     * This will get a float item from the dictionary.
     *
     * @param key The key to the item.
     *
     * @return The value for that item.
     */
    private Float getFloatItem( COSName key )
    {
        Float retval = null;
        COSNumber value = (COSNumber)graphicsState.getDictionaryObject( key );
        if( value != null )
        {
            retval = new Float( value.floatValue() );
        }
        return retval;
    }

    /**
     * This will set a float object.
     *
     * @param key The key to the data that we are setting.
     * @param value The value that we are setting.
     */
    private void setFloatItem( COSName key, Float value )
    {
        if( value == null )
        {
            graphicsState.removeItem( key );
        }
        else
        {
            graphicsState.setItem( key, new COSFloat( value.floatValue() ) );
        }
    }
}