package gboat2.base.view.components;
   
   import gboat2.base.bridge.util.json.JsonUtil;
   
   import java.io.Writer;
   
   import org.apache.struts2.components.Component;
   import org.apache.struts2.views.annotations.StrutsTag;
   import org.apache.struts2.views.annotations.StrutsTagAttribute;
  
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import com.opensymphony.xwork2.util.ValueStack;
  
  /**
   * 上传图片之前在客户端调整要上传的图片的大小，只对 mineType 为 image/jpeg， image/png 的附件生效
   * @date 2014年6月25日
   * @author <a href="mailto:[email protected]">何明旺</a>
   * @since 3.0.0-SNAPSHOT
   * @see Attach
   */
  @StrutsTag(
          name = "attachResize",
          tldTagClass = "gboat2.base.view.jsp.AttachResizeTag",
          description = "上传图片之前在客户端调整要上传的图片的大小，只对 mineType 为 image/jpeg， image/png 的附件生效")
  public class AttachResize extends Component {
  
      protected String width;
      protected String height;
      protected String quality;
      protected String crop;
      
  	public AttachResize(ValueStack stack) {
  		super(stack);
  	}
  
      @Override
      public boolean end(Writer writer, String body) {
          ObjectNode resize = JsonUtil.generateMapper().createObjectNode();
          
          if (width != null)
              resize.put("width", (Integer) findValue(width, Integer.class));
          
          if (height != null)
              resize.put("height", (Integer) findValue(height, Integer.class));
          
          if (quality != null)
              resize.put("quality", (Integer) findValue(quality, Integer.class));
          
          if (crop != null)
              resize.put("crop", (Boolean) findValue(crop, Boolean.class));
          
          findAncestor(Attach.class).addParameter("resize", resize);
          return super.end(writer, body);
      }
  
      @StrutsTagAttribute(description = "要调整的目标宽度，如果原图的宽度大于该值，则将图片的宽度调整至该值", type = "Integer")
      public void setWidth(String width) {
          this.width = width;
      }
  
      @StrutsTagAttribute(description = "要调整的目标高度，如果原图的高度大于该值，则将图片的高度调整至该值", type = "Integer")
      public void setHeight(String height) {
          this.height = height;
      }
  
      @StrutsTagAttribute(description = "对 jpeg 图片的压缩质量， 值为 1--100 之间的整数", type = "Integer", defaultValue = "90")
      public void setQuality(String quality) {
          this.quality = quality;
      }
  
      @StrutsTagAttribute(description = "是否将图片的尺寸调整到精确的尺寸（width 和 height 指定的值），默认情况会按照比例进行调整（保持原宽高比）", defaultValue = "false")
      public void setCrop(String crop) {
          this.crop = crop;
      }
  
  }