QRコードを1枚の背景図に覆って宣伝図を作る
5105 ワード
今日はaspを使いました.Netは宣伝図の機能を生成して、2枚のピクチャーを用意して、1枚のQRコードのピクチャー1枚の背景図、原理はこのQRコードのピクチャーを背景のピクチャーの上で1枚の新しい図を生成します:
くだらないことを言わずにコードをつけましょう.
くだらないことを言わずにコードをつけましょう.
<form id="form1" runat="server">
<div>
<button id="Button1" runat="server" text=" "/>
</div>
<div style="text-align:center">
<image id="ImageCode" runat="server" visible="false"/>
</div>
</form>
</code></pre>
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<pre><code>using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class test_QRCode : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//string CodeText = TextBox1.Text.Trim();
//if (!string.IsNullOrEmpty(CodeText))
//{
// ImageCode.Visible = true;
// ImageCode.ImageUrl = "GetQRCode.ashx?CodeText=" + CodeText;
//}
string str_img_bg = Server.MapPath("1.jpg");//
string str_img_import = Server.MapPath("2.jpg");//
string str_text = " ";//
string str_save_filename = HttpContext.Current.Server.MapPath("test/") + "\\";//
if (!Directory.Exists(str_save_filename))
Directory.CreateDirectory(str_save_filename);
//
using (System.Drawing.Image pickedImage = new System.Drawing.Bitmap(str_img_bg))
{
using (StreamReader sr = new StreamReader(str_img_import))
{
System.Drawing.Image img_import = System.Drawing.Image.FromStream(sr.BaseStream, true);
if (img_import.Height != 182|| img_import.Width != 182)
{
img_import = KiResizeImage(img_import, 182, 182, 0);
}
//
Rectangle fromR = new Rectangle(0, 0, img_import.Width, img_import.Height);
Rectangle toR = new Rectangle(315, 240, img_import.Width, img_import.Height);// x，y 。
using (System.Drawing.Graphics pickedG = System.Drawing.Graphics.FromImage(pickedImage))
{
pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//
pickedG.DrawImage(img_import, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
//
pickedG.DrawString(str_text, new Font("Microsoft YaHei", 20), new SolidBrush(Color.White), new PointF(320, 460));
//jpg
ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo i in icis)
{
if (i.MimeType == "image/jpeg")
{
ici = i;
}
}
EncoderParameters ep = new EncoderParameters(1);
ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)90);
pickedImage.Save(str_save_filename + "0000.jpg");
}
}
}
}
/// <summary>
/// Resize
/// </summary>
/// <param name="bmp"/> Bitmap
/// <param name="newW"/>
/// <param name="newH"/>
/// <param name="Mode"/> ，
/// <returns> </returns>
public static System.Drawing.Image KiResizeImage(System.Drawing.Image bmp, int newW, int newH, int Mode)
{
try
{
System.Drawing.Image b = new Bitmap(newW, newH);
Graphics g = Graphics.FromImage(b);
//
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(bmp, new Rectangle(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);
g.Dispose();
return b;
}
catch
{
return null;
}
}
}</code></pre>
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