添加水印-ag凯发旗舰厅

此演示向您展示如何将文本水印和图像水印添加到 powerpoint 文档。

set text watermark

text:
font:
font size:	the font size must be a valid number. the font size must be a valid number.
color:	the format of color value must be rrggbb.
rotate:	e-iceblue
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set image watermark

image:	click here to browse files customvalidator
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如果这不是您想要的 demo，您可以通过填写表格获取免费定制 demo。

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package ppt;
import com.spire.presentation.*;
import com.spire.presentation.drawing.backgroundtype;
import com.spire.presentation.drawing.fillformattype;
import com.spire.presentation.drawing.iimagedata;
import com.spire.presentation.drawing.picturefilltype;
import javax.imageio.imageio;
import java.awt.*;
import java.awt.geom.rectangle2d;
import java.awt.image.bufferedimage;
import java.io.file;
public class watermarkdemo {
    public void watermark(string filepath, string watermarktype, string text, string imagefile, string resultfilepath) throws exception {
        presentation presentation = new presentation();
        presentation.loadfromfile(filepath);
        switch (watermarktype){
            case "text":
                addtextwatermark(presentation,text);
                break;
            case "image":
                file file = new file(imagefile);
                bufferedimage bufferedimage = imageio.read(file);
                addimagewatermark(presentation,bufferedimage);
                break;
        }
        presentation.savetofile(resultfilepath,fileformat.pptx_2013);
    }
    private void addtextwatermark(presentation presentation, string text) throws exception {
        int width= 400;
        int height= 300;
        rectangle2d.double rect = new rectangle2d.double((presentation.getslidesize().getsize().getwidth() - width) / 2,
                (presentation.getslidesize().getsize().getheight() - height) / 2, width, height);
        for (int i = 0; i< presentation.getslides().getcount();i  ){
            iautoshape shape = presentation.getslides().get(i).getshapes().appendshape(shapetype.rectangle,rect);
            shape.getfill().setfilltype(fillformattype.none);
            shape.getshapestyle().getlinecolor().setcolor(color.white);
            shape.setrotation(-45);
            shape.getlocking().setselectionprotection(true);
            shape.getline().setfilltype(fillformattype.none);
            shape.gettextframe().settext(text);
            portionex textrange = shape.gettextframe().gettextrange();
            textfont font = new textfont("arial rounded mt bold");
            textrange.setlatinfont(font);
            textrange.getfill().setfilltype(fillformattype.solid);
            textrange.getfill().getsolidcolor().setcolor(color.red);
            textrange.setfontheight(22);
        }
    }
    private void addimagewatermark(presentation presentation, bufferedimage bufferedimage) throws documenteditexception {
        iimagedata image = presentation.getimages().append(bufferedimage);
        for (int i = 0; i< presentation.getslides().getcount();i  ) {
            islide slide = presentation.getslides().get(i);
            slide.getslidebackground().settype(backgroundtype.custom);
            slide.getslidebackground().getfill().setfilltype(fillformattype.picture);
            slide.getslidebackground().getfill().getpicturefill().setfilltype(picturefilltype.stretch);
            slide.getslidebackground().getfill().getpicturefill().getpicture().setembedimage(image);
        }
    }
}
                        

using spire.presentation;
using spire.presentation.drawing;
using system.drawing;
using system.windows.forms;
namespace demoonlinecode
{
    class addwatermark
    {
        public void addtextorimagewatermarkdemo(string filepath,string format,string text, string imagepath,  string resultfilename)
        {
            presentation presentation = new presentation();
            presentation.loadfromfile(filepath);
            switch (format)
            {
                case "text":
                    addtextwatermark(presentation,text,resultfilename);
                    break;
                case "image":
                    addimagewatermark(presentation,imagepath,resultfilename);
                    break;
            }
        }
        private static void addtextwatermark(presentation presentation, string text, string resultfilename)
        {
            form frm = new form();
            graphics gc = frm.creategraphics();
            sizef size = gc.measurestring(text, new font("lucida sans unicode", 50));
            //define a rectangle range
            rectanglef rect = new rectanglef((presentation.slidesize.size.width - size.width) / 2, (presentation.slidesize.size.height - size.height) / 2, size.width, size.height);
            foreach (islide slide in presentation.slides)
            {
                iautoshape shape =slide.shapes.appendshape(shapetype.rectangle, rect);
                //set the style of the shape
                shape.fill.filltype = fillformattype.none;
                shape.shapestyle.linecolor.color = color.white;
                shape.rotation = -45;
                shape.locking.selectionprotection = true;
                shape.line.filltype = fillformattype.none;
                //add text to the shape
                shape.textframe.text = text;
                textrange textrange = shape.textframe.textrange;
                //set the style of the text range
                textrange.fill.filltype = fillformattype.solid;
                textrange.fill.solidcolor.color = color.fromargb(120, color.hotpink);
                textrange.fontheight = 50;
            }
            presentation.savetofile(resultfilename   ".pptx", fileformat.pptx2013);
        }
        private static void addimagewatermark(presentation presentation, string imagefile, string resultfilename)
        {
            iimagedata image = presentation.images.append(image.fromfile(imagefile));
            foreach (islide slide in presentation.slides)
            {
                slide.slidebackground.type = backgroundtype.custom;
                slide.slidebackground.fill.filltype = fillformattype.picture;
                slide.slidebackground.fill.picturefill.filltype = picturefilltype.stretch;
                slide.slidebackground.fill.picturefill.picture.embedimage = image;
            }
            presentation.savetofile(resultfilename   ".pptx", fileformat.pptx2013);
        }
    }
}