C# 图片批量缩放工具源码下载

图片批量缩放程序
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Drawing.Drawing2D;using System.Drawing.Imaging;using System.IO;using System.Windows.Forms;using System.Threading;namespace ThumbnailImages{ public delegate void DelegateStart(); public delegate void DelegateDoException(Exception ex); public delegate void DelegateThreadFinished(string message); public delegate void DelegateProgressBarPerformStep(int fileIndex, string filename); public partial class frmMain : Form { int width = 1024, height = 768; int percent = -1; int totalFileCount = 0; private Thread timedProgress; string sourcePath, targetPath; string[] files; public DelegateStart DelegateStart; public DelegateDoException DelegateDoException; public DelegateThreadFinished DelegateThreadFinished; public DelegateProgressBarPerformStep DelegateProgressBarPerformStep; public frmMain() { InitializeComponent(); this.cbDefined.SelectedIndex = 2; DelegateStart = new DelegateStart(this.Start); DelegateThreadFinished = new DelegateThreadFinished(this.ThreadFinished); DelegateDoException = new DelegateDoException(this.DoException); DelegateProgressBarPerformStep = new DelegateProgressBarPerformStep(this.ProgressBarPerformStep); } private void btnStart_Click(object sender, EventArgs e) { string sourcePath = txtSource.Text; string targetPath = txtTarget.Text; if (sourcePath.Length == 0 || !Directory.Exists(sourcePath)) { txtSource.Focus(); MessageBox.Show("请重新选择图片文件夹!", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; } if (targetPath.Length == 0) { txtTarget.Focus(); MessageBox.Show("请重新选择缩略图保存路径!", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; } if (!Directory.Exists(targetPath)) { try { Directory.CreateDirectory(targetPath); } catch { txtTarget.Focus(); MessageBox.Show("请重新选择缩略图保存路径!", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; } } GetImageSizeSetting(); //TimedProgressProc(); timedProgress = new Thread(new ThreadStart(TimedProgressProc)); timedProgress.IsBackground = true; timedProgress.Start(); } public void Start() { sourcePath = txtSource.Text; targetPath = txtTarget.Text; files = Directory.GetFiles(sourcePath); totalFileCount = files.Length; this.lblInfo.Text = string.Format("0/{0}", totalFileCount); this.progressBar.Maximum = totalFileCount; this.btnStart.Enabled = false; this.btnStop.Enabled = true; } public void ThreadFinished(string message) { if (MessageBox.Show(message, "系统提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes) { System.Diagnostics.Process.Start(targetPath); } this.btnStart.Enabled = true; this.btnStop.Enabled = false; this.progressBar.Value = 0; this.lblInfo.Text = "全部完成!"; } public void DoException(Exception ex) { MessageBox.Show(ex.ToString(), "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Error); this.btnStart.Enabled = true; this.btnStop.Enabled = false; this.progressBar.Value = 0; } public void ProgressBarPerformStep(int fileIndex, string filename) { progressBar.PerformStep(); filename = Path.GetFileName(filename); this.lblInfo.Text = string.Format("{0}/{1}, 当前文件: {2}", fileIndex, totalFileCount, filename); } private void TimedProgressProc() { try { ImageCodecInfo icf = ImageHelper.GetImageCodecInfo(ImageFormat.Jpeg); Image image, thumbnailImage; string thumbnailImageFilename; this.Invoke(this.DelegateStart); int i = 0; foreach (string filename in files) { if (timedProgress == null) return; //lblInfo.Text = string.Format("正在处理: {0} ", filename); ; progressBar.Invoke(this.DelegateProgressBarPerformStep, new object[] { i , filename }); string extension = Path.GetExtension(filename).ToLower(); if (extension != ".jpg" && extension != ".jpeg" && extension != ".gif" && extension != ".bmp" && extension != ".png" ) continue; try { using (image = Image.FromFile(filename)) { Size imageSize = GetImageSize(image); using (thumbnailImage = ImageHelper.GetThumbnailImage(image, imageSize.Width, imageSize.Height)) { thumbnailImageFilename = Path.GetFileNameWithoutExtension(filename) "_" thumbnailImage.Width "x" thumbnailImage.Height extension; ImageHelper.SaveImage(thumbnailImage, Path.Combine(targetPath, thumbnailImageFilename), icf); } } } catch(Exception ex) { string em = ex.Message; //lblInfo.Text = string.Format("{0} 可能不是合法的图片文件!", filename); } } this.Invoke(this.DelegateThreadFinished, new object[] { "已经全部完成!\n是否打开生成的缩略图所在文件夹?" }); } catch (ThreadInterruptedException e) { return; } catch (Exception ex) { this.Invoke(this.DelegateDoException, new Object[] { ex }); } } private Size GetImageSize(Image picture) { Size imageSize; if (percent > 0) { imageSize = new Size(picture.Width * percent / 100, picture.Height * percent / 100); } else imageSize = new Size(width, height); double heightRatio = (double)picture.Height / picture.Width; double widthRatio = (double)picture.Width / picture.Height; int desiredHeight = imageSize.Height; int desiredWidth = imageSize.Width; imageSize.Height = desiredHeight; if (widthRatio > 0) imageSize.Width = Convert.ToInt32(imageSize.Height * widthRatio); if (imageSize.Width > desiredWidth) { imageSize.Width = desiredWidth; imageSize.Height = Convert.ToInt32(imageSize.Width * heightRatio); } return imageSize; } private void GetImageSizeSetting() { if (rbDefined.Checked) { if (cbDefined.SelectedIndex == 0) { width = 1024; height = 768; } else if (cbDefined.SelectedIndex == 1) { width = 800; height = 600; } else if (cbDefined.SelectedIndex == 2) { width = 640; height = 480; } else if (cbDefined.SelectedIndex == 3) { width = 448; height = 336; } else if (cbDefined.SelectedIndex == 4) { width = 314; height = 235; } else if (cbDefined.SelectedIndex == 5) { width = 160; height = 160; } } else if (rbCustom.Checked) { width = (int)numWidth.Value; height = (int)numHeight.Value; } else if (rbDefined.Checked) { percent = (int)numPercent.Value; } } private void cbDefined_SelectedIndexChanged(object sender, EventArgs e) { if (!rbDefined.Checked) rbDefined.Checked = true; } private void btnBrowserSource_Click(object sender, EventArgs e) { if (folderBrowserDialog.ShowDialog() == DialogResult.OK) { txtSource.Text = folderBrowserDialog.SelectedPath; if (txtTarget.Text.Length == 0) txtTarget.Text = Path.Combine(folderBrowserDialog.SelectedPath, "ThumbnailImages"); } } private void btnBrowserTarget_Click(object sender, EventArgs e) { if (folderBrowserDialog.ShowDialog() == DialogResult.OK) { txtTarget.Text = folderBrowserDialog.SelectedPath; } } private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { // Change the color of the link text by setting LinkVisited // to true. linkLabel1.LinkVisited = true; //Call the Process.Start method to open the default browser //with a URL: System.Diagnostics.Process.Start("http://www.openlab.net.cn"); } private void btnStop_Click(object sender, EventArgs e) { if (timedProgress != null) { timedProgress.Interrupt(); timedProgress = null; ThreadFinished("已经取消!\n是否打开生成的缩略图所在文件夹?"); this.lblInfo.Text = "已取消!"; } } }}