C# 如何使用轨迹栏滚动事件在图像之间快速平滑地移动？
这是滚动事件C# 如何使用轨迹栏滚动事件在图像之间快速平滑地移动？,c#,.net,winforms,C#,.net,Winforms,这是滚动事件 int countver = 0; int counthor = 0; Image newImage; private void trackBar2_Scroll(object sender, EventArgs e) { if (files != null && files.Length > 0) { newImag
int countver = 0;
int counthor = 0;
Image newImage;
private void trackBar2_Scroll(object sender, EventArgs e)
{
if (files != null && files.Length > 0)
{
newImage = Image.FromFile(files[files.Length - 1]);
float imghorizontal = newImage.HorizontalResolution;
float imgvertical = newImage.VerticalResolution;
if (trackBar2.Value < trackBar2.Maximum)
{
countver += 100;
counthor += 100;
}
if (trackBar2.Value == trackBar2.Maximum)
{
countver += 100;
counthor += 100;
}
pictureBox1.Image = ResizeImage(files[files.Length - 1], (int)imghorizontal + counthor, (int)imgvertical + countver);
label15.Text = (int)imghorizontal + counthor.ToString() + "," + (int)imgvertical + countver.ToString();
label15.Visible = true;
}
}
int countver=0；
int counthor=0；
新形象；
私有void trackBar2_滚动（对象发送方，事件参数e）
{
if（files！=null&&files.Length>0）
{
newImage=Image.FromFile（files[files.Length-1]）；
float imghorizontal=新建图像。水平分辨率；
float imgvertical=newImage.vertical分辨率；
if（trackBar2.Valueprivate static Bitmap ResizeImage(String filename, int maxWidth, int maxHeight)
{
using (Image originalImage = Image.FromFile(filename))
{
//Caluate new Size
int newWidth = originalImage.Width;
int newHeight = originalImage.Height;
double aspectRatio = (double)originalImage.Width / (double)originalImage.Height;
if (aspectRatio <= 1 && originalImage.Width > maxWidth)
{
newWidth = maxWidth;
newHeight = (int)Math.Round(newWidth / aspectRatio);
}
else if (aspectRatio > 1 && originalImage.Height > maxHeight)
{
newHeight = maxHeight;
newWidth = (int)Math.Round(newHeight * aspectRatio);
}
if (newWidth >= 0 && newHeight >= 0)
{
Bitmap newImage = new Bitmap(newWidth, newHeight);
using (Graphics g = Graphics.FromImage(newImage))
{
//--Quality Settings Adjust to fit your application
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(originalImage, 0, 0, newImage.Width, newImage.Height);
return newImage;
}
}
return null;
}
}
私有静态位图大小图像（字符串文件名、int-maxWidth、int-maxHeight）
{
使用（Image originalImage=Image.FromFile（文件名））
{
//计算新尺寸
int newWidth=原始图像宽度；
int newHeight=原始图像高度；
双纵横比=（双）原始图像.宽度/（双）原始图像.高度；
if（aspectRatio maxWidth）
{
newWidth=maxWidth；
newHeight=（int）Math.Round（newWidth/aspectRatio）；
}
else if（aspectRatio>1&&originalImage.Height>maxHeight）
{
newHeight=maxHeight；
newWidth=（int）Math.Round（newHeight*aspectRatio）；
}
如果（newWidth>=0&&newHeight>=0）
{
位图newImage=新位图（newWidth、newHeight）；
使用（Graphics g=Graphics.FromImage（newImage））
{
//--质量设置会根据您的应用程序进行调整
g、 插值模式=System.Drawing.Drawing2D.InterpolationMode.HighQuality双线性；
g、 SmoothingMode=System.Drawing.Drawing2D.SmoothingMode.HighQuality；
g、 PixelOffsetMode=System.Drawing.Drawing2D.PixelOffsetMode.HighQuality；
g、 合成质量=System.Drawing.Drawing2D.CompositingQuality.HighQuality；
g、 DrawImage（原始图像，0，0，newImage.Width，newImage.Height）；
返回新图像；
}
}
返回null；
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Net;
namespace Images_Batch_Resize
{
public partial class Form1 : Form
{
OpenFileDialog openFileDialog1;
string[] files;
string directoryPath;
public Form1()
{
InitializeComponent();
label6.Visible = false;
label7.Visible = false;
label8.Visible = false;
label9.Visible = false;
label10.Visible = false;
label12.Visible = false;
label15.Visible = false;
openFileDialog1 = new OpenFileDialog();
trackBar2.Minimum = 0;
trackBar2.Maximum = 20;
}
private void changeWorkingDirectoryToolStripMenuItem_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "BMP|*.bmp|GIF|*.gif|JPG|*.jpg;*.jpeg|PNG|*.png|TIFF|*.tif;*.tiff|"
+ "All Graphics Types|*.bmp;*.jpg;*.jpeg;*.png;*.tif;*.tiff";
//openFileDialog1.InitialDirectory = @"c:\";
openFileDialog1.RestoreDirectory = true;
openFileDialog1.Multiselect = true;
DialogResult result = openFileDialog1.ShowDialog();
if (result == DialogResult.OK)
{
files = openFileDialog1.FileNames;
try
{
if (files.Length > 0)
{
label6.Text = files.Length.ToString();
label6.Visible = true;
directoryPath = Path.GetDirectoryName(files[0]);
label12.Text = directoryPath;
label12.Visible = true;
pictureBox2.Load(files[0]);
pictureBox1.Load(files[0]);
trackBar1.Minimum = 0;
trackBar1.Maximum = files.Length - 1;
}
}
catch (IOException)
{
}
}
}
private void beginOperationToolStripMenuItem_Click(object sender, EventArgs e)
{
if (files.Length > 0)
{
backgroundWorker1.RunWorkerAsync();
}
}
private static Bitmap ResizeImage(String filename, int maxWidth, int maxHeight)
{
using (Image originalImage = Image.FromFile(filename))
{
//Caluate new Size
int newWidth = originalImage.Width;
int newHeight = originalImage.Height;
double aspectRatio = (double)originalImage.Width / (double)originalImage.Height;
if (aspectRatio <= 1 && originalImage.Width > maxWidth)
{
newWidth = maxWidth;
newHeight = (int)Math.Round(newWidth / aspectRatio);
}
else if (aspectRatio > 1 && originalImage.Height > maxHeight)
{
newHeight = maxHeight;
newWidth = (int)Math.Round(newHeight * aspectRatio);
}
if (newWidth >= 0 && newHeight >= 0)
{
Bitmap newImage = new Bitmap(newWidth, newHeight);
using (Graphics g = Graphics.FromImage(newImage))
{
//--Quality Settings Adjust to fit your application
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(originalImage, 0, 0, newImage.Width, newImage.Height);
return newImage;
}
}
return null;
}
}
int countver = 0;
int counthor = 0;
Image newImage;
private void trackBar2_Scroll(object sender, EventArgs e)
{
if (files != null && files.Length > 0)
{
newImage = Image.FromFile(files[files.Length - 1]);
float imghorizontal = newImage.HorizontalResolution;
float imgvertical = newImage.VerticalResolution;
if (trackBar2.Value < trackBar2.Maximum)
{
countver += 100;
counthor += 100;
}
if (trackBar2.Value == trackBar2.Maximum)
{
countver += 100;
counthor += 100;
}
pictureBox1.Image = ResizeImage(files[files.Length - 1], (int)imghorizontal + counthor, (int)imgvertical + countver);
label15.Text = (int)imghorizontal + counthor.ToString() + "," + (int)imgvertical + countver.ToString();
label15.Visible = true;
}
}
private void trackBar1_Scroll(object sender, EventArgs e)
{
pictureBox1.Load(files[trackBar1.Value]);
pictureBox2.Load(files[trackBar1.Value]);
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
try
{
BackgroundWorker worker = sender as BackgroundWorker;
int counter = 0;
int percentage = 0;
foreach (string file in files)
{
Bitmap bmp1 = new Bitmap(ResizeImage(file, 300, 300));
string resizedfilename = Path.Combine(directoryPath, Path.GetFileNameWithoutExtension(file) + "_resized.jpg");
bmp1.Save(resizedfilename);
bmp1.Dispose();
counter++;
percentage = counter * 100 / files.Length;
worker.ReportProgress(percentage);
}
}
catch(Exception err)
{
string ttt = err.ToString();
}
}
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
}
int oldValue = 0;
private void trackBar2_ValueChanged(object sender, EventArgs e)
{
if ((sender as TrackBar).Value >= oldValue)
{
}
else
{
}
oldValue = (sender as TrackBar).Value;
}
}
}
使用系统；
使用System.Collections.Generic；
使用系统组件模型；
使用系统数据；
使用系统图；
使用System.Linq；
使用系统文本；
使用System.Threading.Tasks；
使用System.Windows.Forms；
使用System.IO；
Net系统；
名称空间图像\u批处理\u调整大小
{
公共部分类Form1:Form
{
OpenFileDialog openFileDialog1；
字符串[]文件；
字符串目录路径；
公共表格1（）
{
初始化组件（）；
标签6.可见=假；
标签7.可见=假；
标签8.可见=假；
标签9.可见=假；
标签10.可见=假；
标签12.可见=假；
标签15.可见=假；
openFileDialog1=新建OpenFileDialog（）；
trackBar2.最小值=0；
trackBar2.最大值=20；
}
私有void changeWorkingDirectoryToolStripMenuItem\u单击（对象发送方，事件参数e）
{
openFileDialog1.Filter=“BMP |*.BMP | GIF |*.GIF | JPG |*.JPG；*.jpeg | PNG |*.PNG | TIFF |*.TIFF |”
+“所有图形类型|*.bmp；*.jpg；*.jpeg；*.png；*.tif；*.tiff”；
//openFileDialog1.InitialDirectory=@“c:\”；
openFileDialog1.RestoreDirectory=true；
openFileDialog1.Multiselect=true；
DialogResult=openFileDialog1.ShowDialog（）；
if（result==DialogResult.OK）
{
files=openFileDialog1.FileNames；
尝试
{
如果（files.Length>0）
{
label6.Text=files.Length.ToString（）；
label6.可见=真实；
directoryPath=Path.GetDirectoryName（文件[0]）；
label12.Text=目录路径；
label12.可见=真；
pictureBox2.Load（文件[0]）；
pictureBox1.Load（文件[0]）；
trackBar1.最小值=0；
trackBar1.max=files.Length-1；
}
}
捕获（IOException）
{
}
}
}
private void beginOperationToolStripMenuItem\u单击（对象发送方，事件参数e）
{
如果（files.Length>0）
{
backgroundWorker1.RunWorkerAsync（）；