应用DEV第三方界面控件制作批量添加水印程序

本次应用devexpress和c#语言制作了一个批量添加水印的程序，看界面效果图：

界面中既可以进行文字水印添加，也可以图片水印添加，同时还可以对水印的位置进行设置，比较实用！

文字水印的具体添加情况，看图：

还可以文字的预览：

整个文字水印的预览：

同时图片的水印预览：

最后显示下图片的水印效果：

核心代码部分：

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.drawing.imaging;
using system.drawing.text;
using system.linq;
using system.text;
using system.windows.forms;

namespace 添加水印_程序
{
    public partial class form1 : devexpress.xtraeditors.xtraform
    {
        public form1()
        {
            initializecomponent();
        }

        #region 获取系统字体
        private void getsystemfont(toolstripcombobox cb)
        {
            installedfontcollection myfont = new installedfontcollection();
            foreach (fontfamily ff in myfont.families)
            {
                cb.items.add(ff.name);
            }
            cb.selecteditem = "宋体";
        }
        #endregion

        private void form1_load(object sender, eventargs e)
        {
            cbbposition.selectedindex = 1;
        }

        string[] imgarray = null;
        string imgdirectorypath = null;

        private void simplebutton4_click(object sender, eventargs e)
        {
            if (openfiledialog1.showdialog() == dialogresult.ok)
            {
                lbimglist.items.clear();
                imgarray = openfiledialog1.filenames;

                string imgp = imgarray[0].tostring();
                
                imgp = imgp.remove(imgp.lastindexof("\\"));
                
                imgdirectorypath = imgp;
                for (int i = 0; i < imgarray.length; i++)
                {
                    string imgpath = imgarray[i].tostring();
                    
                    string imgname = imgpath.substring(imgpath.lastindexof("\\") + 1, imgpath.length - imgpath.lastindexof("\\") - 1);
                    //messagebox.show(imgname);
                    lbimglist.items.add(imgname);
                }
                tsslstatus.text = "图片总数：" + lbimglist.items.count;
            }
        }

        private void listboxcontrol1_selectedindexchanged(object sender, eventargs e)
        {
            if (lbimglist.selecteditems.count > 0)
            {
               tssltext.text = "图片位置：" + imgdirectorypath + "\\" + lbimglist.selecteditems[0].tostring();
            }
        }
        private void btnpreview_click(object sender, eventargs e)
        {
            if (lbimglist.items.count > 0)
            {
                if (rbtxt.checked)
                {
                    if (txtwatermarkfont.text != "" && txtsavapath.text.trim() != "")
                    {
                        addfontwatermark(txtwatermarkfont.text.trim(), lbimglist.items[0].tostring(), 0);
                        frm_browser frm2 = new frm_browser();
                        frm2.ig = bigbt;
                        frm2.showdialog();
                    }
                }
                else
                {
                    if (txtwatermarkimg.text != "" && txtsavapath.text != "")
                    {
                        changealpha();
                        addfontwatermark(txtwatermarkfont.text.trim(), lbimglist.items[0].tostring(), 2);
                        frm_browser frm2 = new frm_browser();
                        frm2.ig = bigbt;
                        frm2.showdialog();
                    }
                }
            }
        }
        private void trackbar1_enter(object sender, eventargs e)
        {
            lbimglist.focus();
        }
        private void btnselect_click(object sender, eventargs e)
        {

            if (openfiledialog2.showdialog() == dialogresult.ok)
            {
                txtwatermarkimg.text = openfiledialog2.filename;
                //messagebox.show(txtwatermarkimg.text);
               

                if (rbpic.checked == true)
                {
                    changealpha();
                    pbimgpreview.image = image.fromfile(txtwatermarkimg.text.trim());
                }
            }

        }
        private void rbtxt_checkedchanged(object sender, eventargs e)
        {
            trackbar1.enabled = false;
            if (rbpic.checked)
                pbimgpreview.image = null;
        }

        private void rbpic_checkedchanged(object sender, eventargs e)
        {
            trackbar1.enabled = true;
            if (rbtxt.checked)
            {

                pbimgpreview.image = null;

            }
        }
     private void txtwatermarkfont_textchanged(object sender, eventargs e)
        {
            if (lbimglist.items.count <= 0)
            {
                messagebox.show("请加载图片", "警告", messageboxbuttons.ok, messageboxicon.error);
                return;
            }
            else
            {
                addfontwatermark(txtwatermarkfont.text.trim(), lbimglist.items[0].tostring(), 0);
                pbimgpreview.image = bt;
            }

        }

        private void simplebutton7_click(object sender, eventargs e)
        {
            application.exit();
        }

        bitmap effect;
        bitmap source;
        image new_img;

        private void changealpha()
        {
            pbimgpreview.refresh();
            source = new bitmap(image.fromfile(txtwatermarkimg.text.trim()));
            if (source.width <= 368)
                effect = new bitmap(368, 75);
            else
            {
                image.getthumbnailimageabort callb = null;
                //对水印图片生成缩略图,缩小到原图得1/4
                new_img = source.getthumbnailimage(source.width / 4, source.width / 4, callb, new system.intptr());
                effect = new bitmap(this.new_img.width, this.new_img.height);
            }
            graphics _effect = graphics.fromimage(effect);
            float[][] matrixitems ={
                                      new float[]{1,0,0,0,0},
                                      new float [] {0,1,0,0,0},
                                      new float []{0,0,1,0,0},
                                      new float []{0,0,0,0,0},
                                      new float[]{0,0,0,trackbar1.value/255f,1}
                                   };

            colormatrix imgmatrix = new colormatrix(matrixitems);
            imageattributes imgeffect = new imageattributes();
            imgeffect.setcolormatrix(imgmatrix, colormatrixflag.default, coloradjusttype.bitmap);
            if (source.width <= 368)
            {
                _effect.drawimage(source, new rectangle(0, 0, 368, 75), 0, 0, 368, 75, graphicsunit.pixel, imgeffect);
            }
            else
            {
                _effect.drawimage(new_img, new rectangle(0, 0, new_img.width, new_img.height), 0, 0, new_img.width, new_img.height, graphicsunit.pixel, imgeffect);
            }
            pbimgpreview.image = effect;
        }



        private void trackbar1_valuechanged(object sender, eventargs e)
        {
            if (rbpic.checked && txtwatermarkimg.text.trim() != "")
                changealpha();
        }
        private void btnperform_click(object sender, eventargs e)
        {
            if (rbtxt.checked && txtsavapath.text != "" && txtwatermarkfont.text != "")
            {
                for (int i = 0; i < lbimglist.items.count; i++)
                {
                    addfontwatermark(txtwatermarkfont.text.trim(), lbimglist.items[i].tostring(), 1);
                }
                messagebox.show("添加水印成功", "提示", messageboxbuttons.ok, messageboxicon.exclamation);
            }
            if (rbpic.checked && txtsavapath.text != "" && pbimgpreview.image != null)
            {
                for (int i = 0; i < lbimglist.items.count; i++)
                {
                    addfontwatermark(txtwatermarkfont.text.trim(), lbimglist.items[i].tostring(), 3);
                }
                messagebox.show("添加水印成功", "提示", messageboxbuttons.ok, messageboxicon.exclamation);
            }

        }
        string newfolderpath;

        private void button2_click(object sender, eventargs e)
        {

            if (folderbrowserdialog1.showdialog() == dialogresult.ok)
            {
                txtsavapath.text = folderbrowserdialog1.selectedpath;
                newfolderpath = txtsavapath.text.trim();
            }
        }

 

有兴趣的可自己尝试下！！！