com.bluexml.side.Framework.alfresco.signature.repo.action.executer.BasePDFStampActionExecuter.java Source code

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Here is the source code for com.bluexml.side.Framework.alfresco.signature.repo.action.executer.BasePDFStampActionExecuter.java

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/*
Copyright (C) 2007-20013  BlueXML - www.bluexml.com
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.
    
You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package com.bluexml.side.Framework.alfresco.signature.repo.action.executer;

import java.util.List;

import org.alfresco.repo.action.ParameterDefinitionImpl;
import org.alfresco.service.cmr.action.ParameterDefinition;
import org.alfresco.service.cmr.dictionary.DataTypeDefinition;

import com.itextpdf.text.Image;
import com.itextpdf.text.Rectangle;

public abstract class BasePDFStampActionExecuter extends BasePDFActionExecuter {

    /*
     * Page and position constants
     */
    public static final String PAGE_ALL = "all";
    public static final String PAGE_ODD = "odd";
    public static final String PAGE_EVEN = "even";
    public static final String PAGE_FIRST = "first";
    public static final String PAGE_LAST = "last";

    public static final String POSITION_CENTER = "center";
    public static final String POSITION_TOPLEFT = "topleft";
    public static final String POSITION_TOPRIGHT = "topright";
    public static final String POSITION_BOTTOMLEFT = "bottomleft";
    public static final String POSITION_BOTTOMRIGHT = "bottomright";

    public static final String PARAM_POSITION = "position";
    public static final String PARAM_LOCATION_X = "location-x";
    public static final String PARAM_LOCATION_Y = "location-y";

    /**
     * Add parameter definitions
     */
    @Override
    protected void addParameterDefinitions(List<ParameterDefinition> paramList) {
        paramList.add(new ParameterDefinitionImpl(PARAM_POSITION, DataTypeDefinition.TEXT, false,
                getParamDisplayLabel(PARAM_POSITION)));
        paramList.add(new ParameterDefinitionImpl(PARAM_LOCATION_X, DataTypeDefinition.TEXT, false,
                getParamDisplayLabel(PARAM_LOCATION_X)));
        paramList.add(new ParameterDefinitionImpl(PARAM_LOCATION_Y, DataTypeDefinition.TEXT, false,
                getParamDisplayLabel(PARAM_LOCATION_Y)));
    }

    /**
     * Determines whether or not a watermark should be applied to a given page
     * @param pages
     * @param current
     * @param numpages
     * @return
     */
    protected boolean checkPage(String pages, int current, int numpages) {

        boolean markPage = false;

        if (pages.equals(PAGE_EVEN) || pages.equals(PAGE_ODD)) {
            if (current % 2 == 0) {
                markPage = true;
            }
        } else if (pages.equals(PAGE_ODD)) {
            if (current % 2 != 0) {
                markPage = true;
            }
        } else if (pages.equals(PAGE_FIRST)) {
            if (current == 1) {
                markPage = true;
            }
        } else if (pages.equals(PAGE_LAST)) {
            if (current == numpages) {
                markPage = true;
                ;
            }
        } else {
            markPage = true;
        }

        return markPage;
    }

    /**
     * Gets the X value for centering the watermark image
     * @param r
     * @param img
     * @return
     */
    protected float getCenterX(Rectangle r, Image img) {
        float x = 0;
        float pdfwidth = r.getWidth();
        float imgwidth = img.getWidth();

        x = (pdfwidth - imgwidth) / 2;

        return x;
    }

    /**
     * Gets the Y value for centering the watermark image
     * @param r
     * @param img
     * @return
     */
    protected float getCenterY(Rectangle r, Image img) {
        float y = 0;
        float pdfheight = r.getHeight();
        float imgheight = img.getHeight();

        y = (pdfheight - imgheight) / 2;

        return y;
    }
}