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144 lines
5.9 KiB
C#
144 lines
5.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using System.Runtime.InteropServices;
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namespace ST.Library.UI.NodeEditor
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{
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internal class FrmNodePreviewPanel : Form
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{
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public Color BorderColor { get; set; }
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public bool AutoBorderColor { get; set; }
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private bool m_bRight;
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private Point m_ptHandle;
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private int m_nHandleSize;
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private Rectangle m_rect_handle;
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private Rectangle m_rect_panel;
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private Rectangle m_rect_exclude;
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private Region m_region;
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private Type m_type;
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private STNode m_node;
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private STNodeEditor m_editor;
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private STNodePropertyGrid m_property;
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private Pen m_pen = new Pen(Color.Black);
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private SolidBrush m_brush = new SolidBrush(Color.Black);
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private static FrmNodePreviewPanel m_last_frm;
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[DllImport("user32.dll")]
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private static extern int SetWindowRgn(IntPtr hWnd, IntPtr hRgn, bool bRedraw);
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public FrmNodePreviewPanel(Type stNodeType, Point ptHandle, int nHandleSize, bool bRight, STNodeEditor editor, STNodePropertyGrid propertyGrid) {
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this.SetStyle(ControlStyles.UserPaint, true);
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this.SetStyle(ControlStyles.ResizeRedraw, true);
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this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
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this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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if (m_last_frm != null) m_last_frm.Close();
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m_last_frm = this;
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m_editor = editor;
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m_property = propertyGrid;
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m_editor.Size = new Size(200, 200);
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m_property.Size = new Size(200, 200);
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m_editor.Location = new Point(1 + (bRight ? nHandleSize : 0), 1);
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m_property.Location = new Point(m_editor.Right, 1);
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m_property.InfoFirstOnDraw = true;
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this.Controls.Add(m_editor);
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this.Controls.Add(m_property);
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this.ShowInTaskbar = false;
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this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
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this.Size = new Size(402 + nHandleSize, 202);
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m_type = stNodeType;
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m_ptHandle = ptHandle;
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m_nHandleSize = nHandleSize;
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m_bRight = bRight;
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this.AutoBorderColor = true;
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this.BorderColor = Color.DodgerBlue;
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}
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protected override void OnLoad(EventArgs e) {
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base.OnLoad(e);
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m_node = (STNode)Activator.CreateInstance(m_type);
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m_node.Left = 20; m_node.Top = 20;
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m_editor.Nodes.Add(m_node);
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m_property.SetNode(m_node);
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m_rect_panel = new Rectangle(0, 0, 402, 202);
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m_rect_handle = new Rectangle(m_ptHandle.X, m_ptHandle.Y, m_nHandleSize, m_nHandleSize);
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m_rect_exclude = new Rectangle(0, m_nHandleSize, m_nHandleSize, this.Height - m_nHandleSize);
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if (m_bRight) {
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this.Left = m_ptHandle.X;
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m_rect_panel.X = m_ptHandle.X + m_nHandleSize;
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} else {
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this.Left = m_ptHandle.X - this.Width + m_nHandleSize;
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m_rect_exclude.X = this.Width - m_nHandleSize;
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m_rect_panel.X = this.Left;
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}
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if (m_ptHandle.Y + this.Height > Screen.GetWorkingArea(this).Bottom) {
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this.Top = m_ptHandle.Y - this.Height + m_nHandleSize;
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m_rect_exclude.Y -= m_nHandleSize;
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} else this.Top = m_ptHandle.Y;
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m_rect_panel.Y = this.Top;
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m_region = new Region(new Rectangle(Point.Empty, this.Size));
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m_region.Exclude(m_rect_exclude);
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using (Graphics g = this.CreateGraphics()) {
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IntPtr h = m_region.GetHrgn(g);
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FrmNodePreviewPanel.SetWindowRgn(this.Handle, h, false);
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m_region.ReleaseHrgn(h);
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}
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this.MouseLeave += Event_MouseLeave;
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m_editor.MouseLeave += Event_MouseLeave;
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m_property.MouseLeave += Event_MouseLeave;
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this.BeginInvoke(new MethodInvoker(() => {
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m_property.Focus();
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}));
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}
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protected override void OnClosing(CancelEventArgs e) {
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base.OnClosing(e);
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this.Controls.Clear();
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m_editor.Nodes.Clear();
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m_editor.MouseLeave -= Event_MouseLeave;
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m_property.MouseLeave -= Event_MouseLeave;
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m_last_frm = null;
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}
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void Event_MouseLeave(object sender, EventArgs e) {
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Point pt = Control.MousePosition;
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if (m_rect_panel.Contains(pt) || m_rect_handle.Contains(pt)) return;
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this.Close();
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}
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protected override void OnPaint(PaintEventArgs e) {
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base.OnPaint(e);
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Graphics g = e.Graphics;
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m_pen.Color = this.AutoBorderColor ? m_node.TitleColor : this.BorderColor;
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m_brush.Color = m_pen.Color;
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g.DrawRectangle(m_pen, 0, 0, this.Width - 1, this.Height - 1);
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g.FillRectangle(m_brush, m_rect_exclude.X - 1, m_rect_exclude.Y - 1, m_rect_exclude.Width + 2, m_rect_exclude.Height + 2);
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Rectangle rect = this.RectangleToClient(m_rect_handle);
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rect.Y = (m_nHandleSize - 14) / 2;
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rect.X += rect.Y + 1;
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rect.Width = rect.Height = 14;
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m_pen.Width = 2;
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g.DrawLine(m_pen, rect.X + 4, rect.Y + 3, rect.X + 10, rect.Y + 3);
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g.DrawLine(m_pen, rect.X + 4, rect.Y + 6, rect.X + 10, rect.Y + 6);
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g.DrawLine(m_pen, rect.X + 4, rect.Y + 11, rect.X + 10, rect.Y + 11);
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g.DrawLine(m_pen, rect.X + 7, rect.Y + 7, rect.X + 7, rect.Y + 10);
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m_pen.Width = 1;
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g.DrawRectangle(m_pen, rect.X, rect.Y, rect.Width - 1, rect.Height - 1);
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}
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}
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} |