// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
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// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
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// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
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// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
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// YOU MAY OBTAIN A COPY OF THE LICENSE AT
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
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// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
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// LIMITATIONS UNDER THE License.
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// GITEE: https://gitee.com/antdui/AntdUI
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// GITHUB: https://github.com/AntdUI/AntdUI
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// CSDN: https://blog.csdn.net/v_132
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// QQ: 17379620
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using System;
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using System.Drawing;
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using System.Windows.Forms;
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namespace AntdUI
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{
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internal class BorderlessFormShadow : Form
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{
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BorderlessForm form;
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//带参构造
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public BorderlessFormShadow(BorderlessForm main)
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{
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form = main;
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SetStyle(
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ControlStyles.UserPaint |
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ControlStyles.AllPaintingInWmPaint |
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ControlStyles.OptimizedDoubleBuffer |
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ControlStyles.ResizeRedraw |
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ControlStyles.DoubleBuffer, true);
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UpdateStyles();
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//置顶窗体
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//TopMost = BorderlessForm.TopMost;
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//BorderlessForm.BringToFront();
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ShowInTaskbar = false;
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FormBorderStyle = FormBorderStyle.None;
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Icon = form.Icon;
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ShowIcon = false;
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Text = form.Text;
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ISize();
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}
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#region 无焦点窗体
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protected override CreateParams CreateParams
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{
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get
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{
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var cp = base.CreateParams;
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cp.ExStyle |= 0x08000000 | 0x00080000;
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if (form != null && form.ShadowPierce) cp.ExStyle |= 0x20;
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cp.Parent = IntPtr.Zero;
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return cp;
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}
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}
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protected override bool ShowWithoutActivation
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{
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get => true;
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}
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protected override void WndProc(ref System.Windows.Forms.Message m)
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{
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if (form.Resizable)
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{
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switch (m.Msg)
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{
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case 0x21:
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m.Result = new IntPtr(3);
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return;
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case 0xa0:
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case 0x200:
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if (form.ResizableMouseMove(PointToClient(MousePosition))) return;
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break;
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case 0xa1:
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case 0x201:
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if (form.ResizableMouseDown()) return;
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break;
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}
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}
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base.WndProc(ref m);
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}
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#endregion
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#region 初始化
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public void ClearShadow()
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{
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bitbmp?.Dispose();
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bitbmp = null;
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}
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public void OnSizeChange()
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{
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if (form.IsMax) Visible = false;
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else
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{
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if (form.Visible) Visible = true;
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ISize();
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Print();
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}
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}
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public void OnLocationChange()
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{
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ISize();
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Print();
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}
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Rectangle shadow_rect = new Rectangle(0, 0, 0, 0), rect_read;
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protected override void OnCreateControl()
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{
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base.OnCreateControl();
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ISize();
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Print();
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}
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#endregion
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#region 控件层相关事件
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public void ISize()
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{
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int shadow = (int)(form.Shadow * Config.Dpi), shadow2 = shadow * 2;
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rect_read = new Rectangle(shadow, shadow, form.Width, form.Height);
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shadow_rect = new Rectangle(form.Left - shadow, form.Top - shadow, rect_read.Width + shadow2, rect_read.Height + shadow2);
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}
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#endregion
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#region 渲染
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public void Print()
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{
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if (IsHandleCreated && shadow_rect.Width > 0 && shadow_rect.Height > 0)
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{
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if (InvokeRequired)
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{
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Invoke(new Action(Print));
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return;
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}
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try
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{
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using (var bmp = PrintBit())
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{
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if (bmp == null) return;
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Win32.SetBits(bmp, shadow_rect, Handle, 255);
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}
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GC.Collect();
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}
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catch { }
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}
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}
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Bitmap? bitbmp = null;
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Bitmap PrintBit()
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{
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int radius = (int)(form.Radius * Config.Dpi), shadow = (int)(form.Shadow * Config.Dpi), shadow2 = shadow * 2, shadow4 = shadow * 4, shadow6 = shadow * 6;
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if (bitbmp == null)
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{
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bitbmp = new Bitmap(shadow6, shadow6);
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using (var g = Graphics.FromImage(bitbmp).High())
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{
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using (var path = new Rectangle(shadow, shadow, shadow6 - shadow2, shadow6 - shadow2).RoundPath(radius))
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{
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using (var brush = new SolidBrush(form.ShadowColor))
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{
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g.FillPath(brush, path);
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}
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Helper.Blur(bitbmp, shadow);
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}
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}
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}
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var bitmap = new Bitmap(shadow_rect.Width, shadow_rect.Height);
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using (var g = Graphics.FromImage(bitmap).High())
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{
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using (var path = rect_read.RoundPath(radius))
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{
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using (var path2 = new System.Drawing.Drawing2D.GraphicsPath())
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{
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path2.AddPath(path, false);
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path2.AddRectangle(new Rectangle(0, 0, shadow_rect.Width, shadow_rect.Height));
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g.SetClip(path2);
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}
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int r = shadow2 + radius;
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g.DrawImage(bitbmp, new Rectangle(0, 0, shadow2, shadow2), new Rectangle(0, 0, shadow2, shadow2), GraphicsUnit.Pixel);
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g.DrawImage(bitbmp, new Rectangle(0, shadow2, shadow, bitmap.Height - shadow4), new Rectangle(0, shadow2, shadow, bitbmp.Height - shadow4), GraphicsUnit.Pixel);
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g.DrawImage(bitbmp, new Rectangle(0, bitmap.Height - shadow2, shadow2, shadow2), new Rectangle(0, bitbmp.Height - shadow2, shadow2, shadow2), GraphicsUnit.Pixel);
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g.DrawImage(bitbmp, new Rectangle(shadow2, bitmap.Height - shadow, bitmap.Width - shadow4, shadow), new Rectangle(shadow2, bitbmp.Height - shadow, bitbmp.Width - shadow4, shadow), GraphicsUnit.Pixel);
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g.DrawImage(bitbmp, new Rectangle(bitmap.Width - shadow2, bitmap.Height - shadow2, shadow2, shadow2), new Rectangle(bitbmp.Width - shadow2, bitbmp.Height - shadow2, shadow2, shadow2), GraphicsUnit.Pixel);
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g.DrawImage(bitbmp, new Rectangle(bitmap.Width - shadow, shadow2, shadow, bitmap.Height - shadow4), new Rectangle(bitbmp.Width - shadow, shadow2, shadow, bitbmp.Height - shadow4), GraphicsUnit.Pixel);
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g.DrawImage(bitbmp, new Rectangle(bitmap.Width - shadow2, 0, shadow2, shadow2), new Rectangle(bitbmp.Width - shadow2, 0, shadow2, shadow2), GraphicsUnit.Pixel);
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g.DrawImage(bitbmp, new Rectangle(shadow2, 0, bitmap.Width - shadow4, shadow), new Rectangle(shadow2, 0, bitbmp.Width - shadow4, shadow), GraphicsUnit.Pixel);
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g.ResetClip();
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if (form.BorderWidth > 0)
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{
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using (var pen = new Pen(form.BorderColor, form.BorderWidth * Config.Dpi))
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{
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g.DrawPath(pen, path);
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}
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}
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}
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}
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return bitmap;
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}
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#endregion
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}
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}
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