结合音乐播放器与画板 - 黑马程序员技术交流社区

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace MusicPlayer
{
public partial class Form1 : Form
{
Bitmap originImg;
Image finishImg;
Graphics g;
Point StartPoint, EndPoint;
Pen p = new Pen(Color.Black, 2);
bool IsDraw;
bool IsPen;
public Form1()
{
InitializeComponent();
this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true);
this.UpdateStyles();
p.StartCap = LineCap.Round;
p.EndCap = LineCap.Round;//将线帽样式设为圆线帽
originImg = new Bitmap(picDraw.Width, picDraw.Height);
g = Graphics.FromImage(originImg);
g.Clear(Color.White); //画布背景初始化为白底
picDraw.Image = originImg;
finishImg = (Image)originImg.Clone();
}
private void button1_Click(object sender, EventArgs e)
{
DialogResult pathok;
pathok = folderBrowserDialog1.ShowDialog(); //显示选择目录对话框
if (pathok == DialogResult.OK) //如果单击OK 则获取目录内
{
string[] allfile = System.IO.Directory.GetFiles(folderBrowserDialog1.SelectedPath); //获取目录内所有文件
foreach (string file in allfile)
{
if (System.IO.Path.GetExtension(file) == ".mp3" || System.IO.Path.GetExtension(file) == ".wma")
{
listBox1.Items.Add(System.IO.Path.GetFileName(file)); //在listBox1里显示文件
}
}
}
pause.Enabled = true;
previous.Enabled = true;
next.Enabled = true;
delete.Enabled = true;
trackBar1.Value = axWindowsMediaPlayer1.settings.volume;
}
private void listBox1_DoubleClick(object sender, EventArgs e)
{
axWindowsMediaPlayer1.URL = folderBrowserDialog1.SelectedPath + @"/" + listBox1.Items[listBox1.SelectedIndex].ToString();
timer1.Enabled = true;
}
private void play_Click(object sender, EventArgs e)
{
axWindowsMediaPlayer1.Ctlcontrols.play();
}
private void pause_Click(object sender, EventArgs e)
{
axWindowsMediaPlayer1.Ctlcontrols.pause();
play.Enabled = true;
}
private void previous_Click(object sender, EventArgs e)
{
--listBox1.SelectedIndex;
axWindowsMediaPlayer1.URL = folderBrowserDialog1.SelectedPath + @"/" + listBox1.Items[listBox1.SelectedIndex].ToString();
}
private void next_Click(object sender, EventArgs e)
{
++listBox1.SelectedIndex;
axWindowsMediaPlayer1.URL = folderBrowserDialog1.SelectedPath + @"/" + listBox1.Items[listBox1.SelectedIndex].ToString();
}
private void delete_Click(object sender, EventArgs e)
{
if (listBox1.Text != null)
{ listBox1.Items.Remove(listBox1.Text); }
++listBox1.SelectedIndex;
axWindowsMediaPlayer1.URL = folderBrowserDialog1.SelectedPath + @"/" + listBox1.Items[listBox1.SelectedIndex].ToString();
}
private void trackBar1_Scroll(object sender, EventArgs e)
{
axWindowsMediaPlayer1.settings.volume = trackBar1.Value;
}
private void timer1_Tick(object sender, EventArgs e)
{
if (axWindowsMediaPlayer1.playState == (WMPLib.WMPPlayState)1)
{
++listBox1.SelectedIndex;
axWindowsMediaPlayer1.URL = folderBrowserDialog1.SelectedPath + @"/" + listBox1.Items[listBox1.SelectedIndex].ToString();
}
}
private void mypen_Click(object sender, EventArgs e)
{
IsPen = true;
}
private void myeraser_Click(object sender, EventArgs e)
{
IsPen = false;
}
private void picDraw_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
IsDraw = true;
StartPoint = e.Location;
if (!IsPen)
finishImg = (Image)originImg.Clone();
}
}
private void picDraw_MouseMove(object sender, MouseEventArgs e)
{
if (IsDraw)
{
g = Graphics.FromImage(finishImg);
g.SmoothingMode = SmoothingMode.AntiAlias;
EndPoint = e.Location;
if (IsPen)
{
g.DrawLine(p, StartPoint, EndPoint);
StartPoint = EndPoint;
}
else
{
Pen pen1 = new Pen(Color.White, 20);
pen1.StartCap = LineCap.Round;
pen1.EndCap = LineCap.Round;
g.DrawLine(pen1, StartPoint, EndPoint);
StartPoint = EndPoint;
pen1.Dispose();
}
reDraw();
}
}
private void picDraw_MouseUp(object sender, MouseEventArgs e)
{
IsDraw = false;
originImg = (Bitmap)finishImg;
picDraw.Image = originImg;
}
private void reDraw()
{
Graphics graphics = picDraw.CreateGraphics();
graphics.DrawImage(finishImg, new Point(0, 0));
graphics.Dispose();
}
private void savepic_Click(object sender, EventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "jpg|*.jpg|png|*.png|bmp|*.bmp";
if (sfd.ShowDialog() == DialogResult.OK)
{
finishImg.Save(sfd.FileName);
}
}
private void clearpic_Click(object sender, EventArgs e)
{
g.Clear(Color.White);
reDraw();
}
}
}

复制代码