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      C#实现手机拍照并且保存水印照片
      发布时间:2016-12-21 08:07:06 关键词: c#手机拍照水印
      内容简介:这篇文章主要介绍了C#实现手机拍照并且保存水印照片的相关资料,非常不错,具有参考借鉴价值,需要的朋友可以参考下

    图像采集需要调用摄像头就行拍照操作,网上查了一下资料,需要引用以下3个dll。

    看一下运行界面

    界面都比较low,主要是功能实现。

    private void Camera_Load(object sender, EventArgs e)
    {
    this.btnSave.Enabled = false;
    try
    {
    borderSize = GetBorderSize(this);
    captionHeight = GetCaptionHeight(this);
    //InitStudent("", "", "");
    this.comboBox_SizeMode.Text = "填充(保持比例)";
    FilterInfoCollection infos = new FilterInfoCollection(FilterCategory.VideoInputDevice);
    if ((infos != null) && (infos.Count > 0))
    {
    }
    else
    {
    MessageBox.Show("没有视频设备");
    }
    this.LoadVedio();
    this.splitContainer1.Panel2MinSize = 280;
    this.splitContainer1.SplitterDistance = this.splitContainer1.Width - this.splitContainer1.Panel2MinSize + 1;
    mf = new BorderForm();
    mf.Show(this);
    //mf.Left = (this.Left + this.splitContainer1.Panel1.Width - mf.Width) / 2;
    //mf.Top = (this.Top + this.splitContainer1.Panel1.Height - mf.Height) / 2;
    //marLeft = mf.Left - this.Left;
    //marTop = mf.Top - this.Top;
    Rectangle rtPic = this.pictureBox_Camera.RectangleToScreen(this.pictureBox_Camera.ClientRectangle);
    Rectangle rtMF = this.mf.RectangleToScreen(this.mf.ClientRectangle);
    if (rtPic == null || rtMF == null || rtPic.Width == 0 || rtMF.Width == 0)
    {
    return;
    }
    mf.Left = ((rtMF.Width + rtMF.Left) + (rtPic.Width + rtPic.Left)) / 2;
    mf.Top = ((rtMF.Height + rtMF.Top) + (rtPic.Height + rtPic.Top)) / 2;
    mf.SizeChanged += new EventHandler(mf_SizeChanged);
    mf.LocationChanged += new EventHandler(mf_LocationChanged);
    pictureBox_Camera_SizeChanged(sender, e);
    //启动连拍
    //this.ShootOneTime = 0;
    this.timer1.Start();
    }
    catch (Exception ex)
    {
    MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
    }
    //加载摄像头设备
    private void LoadVedio()
    {
    FilterInfoCollection infos = new FilterInfoCollection(FilterCategory.VideoInputDevice);
    if ((infos != null) && (infos.Count > 0))
    {
    int index = 0;
    foreach (FilterInfo info in infos)
    {
    this.cmbCaptureDevice.Items.Add(new DeviceInfo(info.Name, info.MonikerString, index, FilterCategory.VideoInputDevice));
    index++;
    }
    this.cmbCaptureDevice.SelectedIndex = 0;
    }
    }
    /// <summary>
    /// 拍照
    /// </summary>
    private void Shoot()
    {
    try
    {
    if (this.pictureBox_Camera.Image != null && (int)this.numericUpDown1.Value > 0 && (int)this.numericUpDown2.Value > 0)
    {
    Bitmap resultImage = new Bitmap((int)this.numericUpDown1.Value, (int)this.numericUpDown2.Value);
    Graphics g = Graphics.FromImage(resultImage);
    g.CopyFromScreen(new Point(this.mf.Location.X + 1, this.mf.Location.Y + 1), new Point(6, 6 + (isWin7 ? 2 : 0)), new Size(resultImage.Size.Width, resultImage.Size.Height - (6 + (isWin7 ? 2 : 0))));
    if (!string.IsNullOrEmpty(XH))
    {
    string str = "";
    if (this.XH != "")
    {
    str = this.XH;
    }
    else if (this.SFZH != "")
    {
    str = this.SFZH;
    }
    else if (this.KSH != "")
    {
    str = this.KSH;
    }
    if (this.checkBox2.Checked)
    {
    str = XM + " " + str;
    }
    int txtWidth = (int)(g.MeasureString(str, new Font("宋体", 9)).Width * 1.1);
    Rectangle rec = new Rectangle((resultImage.Width - txtWidth) / 2, resultImage.Height - 16, txtWidth, 15);
    g.FillRectangle(Brushes.White, rec);
    StringFormat sf = new StringFormat();
    sf.LineAlignment = StringAlignment.Center;
    sf.Alignment = StringAlignment.Center;
    rec.Height++;
    g.DrawString(str, new Font("宋体", 9), Brushes.Black, rec, sf);
    }
    this.pictureBox_tx.Image = resultImage;
    }
    else
    {
    this.pictureBox_tx.Image = null;
    }
    }
    catch (Exception ex)
    {
    MessageBox.Show(ex.Message, "", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
    }
    //选择摄像装置
    private void cmbCaptureDevice_SelectedIndexChanged(object sender, EventArgs e)
    {
    if (this.cmbCaptureDevice.SelectedItem != null)
    {
    this.cmbDeviceCapability.Items.Clear();
    VideoCaptureDevice device = new VideoCaptureDevice(((DeviceInfo)this.cmbCaptureDevice.SelectedItem).MonikerString);
    for (int i = 0; i < device.VideoCapabilities.Length; i++)
    {
    VideoCapabilities capabilities = device.VideoCapabilities[i];
    DeviceCapabilityInfo item = new DeviceCapabilityInfo(capabilities.FrameSize);
    this.cmbDeviceCapability.Items.Add(item);
    }
    DeviceInfo selectedItem = (DeviceInfo)this.cmbCaptureDevice.SelectedItem;
    if (this.captureAForge != null)
    {
    this.captureAForge.NewFrame -= new NewFrameEventHandler(this.captureAForge_NewFrame);
    //this.captureAForge.SnapshotFrame -= new NewFrameEventHandler(this.captureAForge_SnapshotFrame);
    if (this.captureAForge.IsRunning)
    {
    this.captureAForge.SignalToStop();
    }
    this.captureAForge.WaitForStop();
    this.captureAForge = null;
    }
    this.captureAForge = new VideoCaptureDevice(selectedItem.MonikerString);
    this.captureAForge.ProvideSnapshots = true;
    this.captureAForge.NewFrame += new NewFrameEventHandler(this.captureAForge_NewFrame);
    //this.captureAForge.SnapshotFrame += new NewFrameEventHandler(this.captureAForge_SnapshotFrame);
    if (this.cmbDeviceCapability.Items.Count > 0)
    {
    this.cmbDeviceCapability.SelectedIndex = 0;
    }
    }
    }
    //选择分辨率
    private void cmbDeviceCapability_SelectedIndexChanged(object sender, EventArgs e)
    {
    string[] strArray = this.cmbDeviceCapability.Text.Trim().Split(new char[] { 'x' });
    int width = int.Parse(strArray[0]);
    int height = int.Parse(strArray[1]);
    if (this.captureAForge != null)
    {
    if (this.captureAForge.IsRunning)
    {
    this.captureAForge.SignalToStop();
    }
    this.captureAForge.WaitForStop();
    this.captureAForge.DesiredFrameSize = new Size(width, height);
    this.captureAForge.DesiredSnapshotSize = new Size(width, height);
    //this.captureAForge.DesiredFrameRate = 1000;
    this.captureAForge.Start();
    }
    }
    //设置数据源大小 
    private void comboBox_SizeMode_SelectedIndexChanged(object sender, EventArgs e)
    {
    switch (this.comboBox_SizeMode.Text)
    {
    case "默认(原始大小)":
    this.pictureBox_Camera.SizeMode = PictureBoxSizeMode.Normal;
    break;
    case "居中(原始大小)":
    this.pictureBox_Camera.SizeMode = PictureBoxSizeMode.CenterImage;
    break;
    case "填充(拉伸图像)":
    this.pictureBox_Camera.SizeMode = PictureBoxSizeMode.StretchImage;
    break;
    case "填充(保持比例)":
    this.pictureBox_Camera.SizeMode = PictureBoxSizeMode.Zoom;
    break;
    }
    }
    //保存照片
    private void buttonSave_Click(object sender, EventArgs e)
    {
    try
    {
    string filename = Path.Combine(Application.StartupPath, "StuImages", "Newstuimages", this.XH + ".JPG");
    if (!this.checkBox1.Checked && File.Exists(filename))
    {
    if (MessageBox.Show("该生已经有照片文件,是否覆盖? ", "", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
    {
    //存储到本地
    this.pictureBox_tx.Image.Save(filename);
    //OnDataChanged(this, new DataEventArgs(string.Format("头像采集(覆盖),学号:{0},姓名:{1},考生号:{2},身份证号:{3}", this.XH, this.XM, this.KSH, this.SFZH)));
    this.txtKSH.Focus();
    this.txtKSH.SelectAll();
    }
    else
    {
    return;
    }
    }
    else
    {
    this.pictureBox_tx.Image.Save(filename);
    //OnDataChanged(this, new DataEventArgs(string.Format("头像采集,学号:{0},姓名:{1},考生号:{2},身份证号:{3}", this.XH, this.XM, this.KSH, this.SFZH)));
    this.txtKSH.Focus();
    this.txtKSH.SelectAll();
    }
    this.timer1.Start();
    }
    catch
    {
    }
    finally
    {
    //启用下面一行,点击保存后头像会立即启动刷新
    //this.timer1.Start();
    this.btnSave.Enabled = false;
    }
    }

    保存照片可以选择自动覆盖同名照片或者在照片中加入水印效果。

    操作时候可以自行拖动长方形的框进行选择拍照

    以上所述是小编给大家介绍的C#实现手机拍照并且保存水印照片,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对乐码库网站的支持!

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