Blooming old trees -- quickly build a map bed application with imageprocessor

ImageProcessor brief introduction

This

plug-in unit

yes .netframework A picture processing plug-in under the framework , Although the framework is a little old , But fortunately, the configuration is very simple , The function is also very easy to use , It is very suitable for some drawing bed applications .

Official documents are also relatively simple , Although it's in English , But it's easy to understand , There is no complicated configuration and .netcore In the environment SixLabor Series functions are similar .

Create project

Be careful , Because this plug-in does not support dotnetcore, So you need to create a .net4.5+ Project to integrate .

I use an old project directly here , Removed multiple functions （ Because there is only one local vs2022 了 , If you do not install the extension , Can't directly create .netframework Of web project ~~）

Introducing extended

Directly in vs Enter installation instructions in the terminal window of

install-package imageprocessor.web

Or directly at nuget Search inside imageprocessor.web Then click Install .

Be careful ,imageprocessor The installation of is intrusive , It will modify your configuration file , therefore , If the plug-in is integrated in an existing project , Compatibility needs to be considered , After integration, see whether it will affect the original configuration .

After installed ,webconfig The file will be automatically filled with the following

<!--configSections New in node -->
<sectionGroup name=&quot;imageProcessor&quot;>
 <section name=&quot;security&quot; requirePermission=&quot;false&quot; type=&quot;ImageProcessor.Web.Configuration.ImageSecuritySection, ImageProcessor.Web&quot;/>
 <section name=&quot;processing&quot; requirePermission=&quot;false&quot; type=&quot;ImageProcessor.Web.Configuration.ImageProcessingSection, ImageProcessor.Web&quot;/>
 <section name=&quot;caching&quot; requirePermission=&quot;false&quot; type=&quot;ImageProcessor.Web.Configuration.ImageCacheSection, ImageProcessor.Web&quot;/>
</sectionGroup>

<!--system.web New in node -->
<httpModules>
 <add name=&quot;ImageProcessorModule&quot; type=&quot;ImageProcessor.Web.HttpModules.ImageProcessingModule, ImageProcessor.Web&quot;/>
</httpModules>

<!--system.webServer New in node -->
<modules>
 <add name=&quot;ImageProcessorModule&quot; type=&quot;ImageProcessor.Web.HttpModules.ImageProcessingModule, ImageProcessor.Web&quot;/>
</modules>

<!-- The root node configuration New -->
<imageProcessor>
 <security configSource=&quot;config\imageprocessor\security.config&quot;/>
 <caching configSource=&quot;config\imageprocessor\cache.config&quot;/>
 <processing configSource=&quot;config\imageprocessor\processing.config&quot;/>
</imageProcessor>


meanwhile , Also create one under the root directory of the project config Folder , It contains the corresponding configuration file .

Usually , You don't need to modify these , But if the storage location of this path is too eye-catching , It can be adjusted , Pay attention to the adjustment , Change the point in the configuration file .

See the effect

Usually , If it is a drawing bed application , In fact, all the work will be basically completed here , Get the project running , You can see the actual effect

For example, zoom a picture

The path of the original figure is like this ：http:// domain name /festival/2022-1-1.png

If you want to zoom , Let the width of his picture display space 200px, You can go directly to url The following splicing parameters can be used

The new path is like this ：http:// domain name /festival/2022-1-1.png

?width=200

• tailoring

Cutting is also , such as , I want to pick out a rectangle in the picture

The original path is still the one just now , Cropped image , this is it http:// domain name /festival/2022-1-1.png

?crop=100,100,300,200

It also supports some other effects , You can check the official website .

Other functions

And SixLabor equally ,imageprocessor It also provides the function of image processing , For example, combine two pictures , Write words on the picture and so on .

The process is also relatively simple , Assemble according to the model provided by the component , I'll simply post an example here

using (ImageFactory imageFactory = new ImageFactory(preserveExifData: true))
{
 imageFactory.Load(inStream);
 ISupportedImageFormat format = new JpegFormat { Quality = 70 };
 Size size = new Size(150, 0);

 foreach (var item in model.content_list)
 {
 FontFamily ff = new FontFamily(item.font_family);
 TextLayer textLayer = new TextLayer()
 {
 Text = item.content,
 FontColor = Color.FromArgb(item.color_r, item.color_g, item.color_b),
 Position = new Point(item.location_x, item.location_y),
 FontSize = item.font_size,
 FontFamily = ff
 };
 imageFactory.Watermark(textLayer);

 // Whether to generate QR code
 if (item.is_qrcode == 1)
 {
 // Generate qr code
 string qrcode_path = QrCodeHelper.MakeQrcodeSaveLocal(item.qrcode_content);

 #region  Turn the image into a stream and add it to the certificate template
 FileStream fileStream = new FileStream(qrcode_path, FileMode.Open, FileAccess.Read);
 int byteLength = (int)fileStream.Length;
 byte[] fileBytes = new byte[byteLength];
 fileStream.Read(fileBytes, 0, byteLength);
 // File stream closed , File unlocked
 fileStream.Close();
 #endregion

 // Add QR code watermark to certificate template
 ImageLayer imageLayer = new ImageLayer()
 {
 Image = Image.FromStream(new MemoryStream(fileBytes)),// First turn the picture into a stream , Then add it to the certificate template, and it won't occupy the image
 Position = new Point(item.qrcode.location_x, item.qrcode.location_y),
 Size = new Size(item.qrcode.width, item.qrcode.height),
 Opacity = item.qrcode.opacity
 };
 imageFactory.Overlay(imageLayer);

 // Delete local QR code
 if (item.isdel_qrcode == 1)
 {
 FileHelper.DeleteLocalFile(qrcode_path);
 }
 }
 }
 imageFactory.Save(outStream);
 imageFactory.Dispose();
}

In this paragraph, the synthesis of multiple pictures is realized by putting the QR code on the pictures . Mainly synthetic text , By construction TextLayer Class to achieve , Composite pictures are structures ImageLayer class , Then call the specified method , Specific description , It is recommended to have a look

Official documents .

The synthetic effect is like this

Well, that's basically it , Although this plug-in is relatively old , But as a separate drawing bed application , It's very practical , If you are familiar with .net Frame words , Basically, it's all done in about half an hour .