85 lines
3.4 KiB
C#
85 lines
3.4 KiB
C#
|
using System;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
using System.Linq;
|
|||
|
|
using System.Text;
|
|||
|
|
using ST.Library.UI.NodeEditor;
|
|||
|
|
using System.Drawing;
|
|||
|
|
using System.Windows.Forms;
|
|||
|
|
using System.Reflection;
|
|||
|
|
|
|||
|
|
namespace WinNodeEditorDemo.ImageNode
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
[STNode("Image", "Crystal_lz", "2212233137@qq.com", "st233.com", "Image Node")]
|
|||
|
|
public class ImageInputNode : ImageBaseNode
|
|||
|
|
{
|
|||
|
|
private string _FileName;//默认的DescriptorType不支持文件路径的选择 所以需要扩展
|
|||
|
|
[STNodeProperty("InputImage", "Click to select a image", DescriptorType = typeof(OpenFileDescriptor))]
|
|||
|
|
public string FileName {
|
|||
|
|
get { return _FileName; }
|
|||
|
|
set {
|
|||
|
|
Image img = null; //当文件名被设置时 加载图片并 向输出节点输出
|
|||
|
|
if (!string.IsNullOrEmpty(value)) {
|
|||
|
|
img = Image.FromFile(value);
|
|||
|
|
}
|
|||
|
|
if (m_img_draw != null) m_img_draw.Dispose();
|
|||
|
|
m_img_draw = img;
|
|||
|
|
_FileName = value;
|
|||
|
|
m_op_img_out.TransferData(m_img_draw, true);
|
|||
|
|
this.Invalidate();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected override void OnCreate() {
|
|||
|
|
base.OnCreate();
|
|||
|
|
this.Title = "ImageInput";
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected override void OnDrawBody(DrawingTools dt) {
|
|||
|
|
base.OnDrawBody(dt);
|
|||
|
|
Graphics g = dt.Graphics;
|
|||
|
|
Rectangle rect = new Rectangle(this.Left + 10, this.Top + 30, 140, 80);
|
|||
|
|
g.FillRectangle(Brushes.Gray, rect);
|
|||
|
|
if (m_img_draw != null) g.DrawImage(m_img_draw, rect);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
/// <summary>
|
|||
|
|
/// 对默认Descriptor进行扩展 使得支持文件路径选择
|
|||
|
|
/// </summary>
|
|||
|
|
public class OpenFileDescriptor : STNodePropertyDescriptor
|
|||
|
|
{
|
|||
|
|
private Rectangle m_rect_open; //需要绘制"打开"按钮的区域
|
|||
|
|
private StringFormat m_sf;
|
|||
|
|
|
|||
|
|
public OpenFileDescriptor() {
|
|||
|
|
m_sf = new StringFormat();
|
|||
|
|
m_sf.Alignment = StringAlignment.Center;
|
|||
|
|
m_sf.LineAlignment = StringAlignment.Center;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected override void OnSetItemLocation() { //当在STNodePropertyGrid上确定此属性需要显示的区域时候
|
|||
|
|
base.OnSetItemLocation(); //计算出"打开"按钮需要绘制的区域
|
|||
|
|
m_rect_open = new Rectangle(
|
|||
|
|
this.RectangleR.Right - 20,
|
|||
|
|
this.RectangleR.Top,
|
|||
|
|
20,
|
|||
|
|
this.RectangleR.Height);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected override void OnMouseClick(System.Windows.Forms.MouseEventArgs e) {
|
|||
|
|
if (m_rect_open.Contains(e.Location)) { //点击在"打开"区域 则弹出文件选择框
|
|||
|
|
OpenFileDialog ofd = new OpenFileDialog();
|
|||
|
|
ofd.Filter = "*.jpg|*.jpg|*.png|*.png";
|
|||
|
|
if (ofd.ShowDialog() != DialogResult.OK) return;
|
|||
|
|
this.SetValue(ofd.FileName);
|
|||
|
|
} else base.OnMouseClick(e); //否则默认处理方式 弹出文本输入框
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
protected override void OnDrawValueRectangle(DrawingTools dt) {
|
|||
|
|
base.OnDrawValueRectangle(dt); //在STNodePropertyGrid绘制此属性区域时候将"打开"按钮绘制上去
|
|||
|
|
dt.Graphics.FillRectangle(Brushes.Gray, m_rect_open);
|
|||
|
|
dt.Graphics.DrawString("+", this.Control.Font, Brushes.White, m_rect_open, m_sf);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|