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Formium.cs
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Formium.cs
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using Chromium.WebBrowser;
using NetDimension.Windows.Imports;
using NetDimension.WinForm;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
using Chromium;
using System.ComponentModel;
using Chromium.Remote;
namespace NetDimension.NanUI
{
public class Formium : ModernUIForm, IChromiumClient
{
private BrowserCore browserCore;
private readonly Panel splashPanel;
private bool isFirstTimeShowSplash;
protected IntPtr FormHandle { get; private set; }
protected BrowserCore Chromium => browserCore;
protected IntPtr BrowserHandle
{
get
{
return browserCore.BrowserHost.WindowHandle;
}
}
#region ICefClient
[Browsable(false)]
public CfxBrowser Browser => browserCore.Browser;
[Browsable(false)]
public CfxBrowserHost BrowserHost => browserCore.BrowserHost;
[Browsable(false)]
public Uri Url => browserCore.Url;
[Browsable(false)]
public bool IsLoading => browserCore.IsLoading;
[Browsable(false)]
public bool CanGoBack => browserCore.CanGoBack;
[Browsable(false)]
public bool CanGoForward => browserCore.CanGoForward;
[Browsable(false)]
public JSObject GlobalObject => browserCore.GlobalObject;
[Browsable(false)]
public CfxContextMenuHandler ContextMenuHandler => browserCore.ContextMenuHandler;
[Browsable(false)]
public CfxLifeSpanHandler LifeSpanHandler => browserCore.LifeSpanHandler;
[Browsable(false)]
public CfxLoadHandler LoadHandler => browserCore.LoadHandler;
[Browsable(false)]
public CfxRequestHandler RequestHandler => browserCore.RequestHandler;
[Browsable(false)]
public CfxDisplayHandler DisplayHandler => browserCore.DisplayHandler;
[Browsable(false)]
public CfxDownloadHandler DownloadHandler => browserCore.DownloadHandler;
[Browsable(false)]
public CfxDragHandler DragHandler => browserCore.DragHandler;
[Browsable(false)]
public CfxDialogHandler DialogHandler => browserCore.DialogHandler;
[Browsable(false)]
public CfxFindHandler FindHandler => browserCore.FindHandler;
[Browsable(false)]
public CfxFocusHandler FocusHandler => browserCore.FocusHandler;
[Browsable(false)]
public CfxGeolocationHandler GeolocationHandler => browserCore.GeolocationHandler;
[Browsable(false)]
public CfxJsDialogHandler JsDialogHandler => browserCore.JsDialogHandler;
[Browsable(false)]
public CfxKeyboardHandler KeyboardHandler => browserCore.KeyboardHandler;
public void GoBack() => browserCore.GoBack();
public void GoForward() => browserCore.GoForward();
public void LoadUrl(string url) => browserCore.LoadUrl(url);
public void LoadString(string stringVal, string url) => browserCore.LoadString(stringVal, url);
public void LoadString(string stringVal) => browserCore.LoadString(stringVal);
public int Find(string searchText, bool forward, bool matchCase) => browserCore.Find(searchText, forward, matchCase);
public int Find(string searchText, bool forward) => browserCore.Find(searchText, forward);
public int Find(string searchText) => browserCore.Find(searchText);
public bool ExecuteJavascript(string code) => browserCore.ExecuteJavascript(code);
public bool ExecuteJavascript(string code, string scriptUrl, int startLine) => browserCore.ExecuteJavascript(code, scriptUrl, startLine);
public bool EvaluateJavascript(string code, Action<CfrV8Value, CfrV8Exception> callback) => browserCore.EvaluateJavascript(code, callback);
public bool EvaluateJavascript(string code, JSInvokeMode invokeMode, Action<CfrV8Value, CfrV8Exception> callback) => browserCore.EvaluateJavascript(code, invokeMode, callback);
public JSObject GlobalObjectForFrame(string frameName) => browserCore.GlobalObjectForFrame(frameName);
#endregion
[Browsable(false)]
public Panel SplashPanel
{
get
{
return splashPanel;
}
}
/// <summary>
/// 设置或获取NanUI窗口加载等待画面使用的图片
/// </summary>
[Category("NanUI")]
public Image SplashImage
{
get
{
return splashPanel.BackgroundImage;
}
set
{
splashPanel.BackgroundImage = value;
}
}
/// <summary>
/// 设置或获取NanUI窗口加载等待画面图片布局方式
/// </summary>
[Category("NanUI")]
public ImageLayout SplashImageLayout
{
get
{
return splashPanel.BackgroundImageLayout;
}
set
{
splashPanel.BackgroundImageLayout = value;
}
}
/// <summary>
/// 设置或获取NanUI窗口加载等待画面背景颜色
/// </summary>
[Category("NanUI")]
public Color SplashBackColor
{
get
{
return splashPanel.BackColor;
}
set
{
splashPanel.BackColor = value;
}
}
public Formium()
: this(null)
{
}
public Formium(string initialUrl)
: this(initialUrl, true)
{
}
public Formium(string initialUrl, bool enableModernForm)
: base(enableModernForm)
{
this.DoubleBuffered = true;
UpdateStyles();
splashPanel = new Panel()
{
Dock = DockStyle.Fill,
BackColor = Color.Transparent
};
if (!IsDesignMode)
{
this.Controls.Add(splashPanel);
splashPanel.BringToFront();
isFirstTimeShowSplash = true;
InitializeBrowserCore(initialUrl);
}
}
protected void HideInitialSplash()
{
if (isFirstTimeShowSplash)
{
HideSplash();
isFirstTimeShowSplash = false;
}
}
protected void HideSplash()
{
this.RequireUIThread(() =>
{
splashPanel.Visible = false;
splashPanel.SendToBack();
browserCore.SetToTop();
});
}
protected virtual void InitializeBrowserCore(string initialUrl)
{
if (IsDesignMode) return;
browserCore = new BrowserCore(this, initialUrl, true);
browserCore.RemoteCallbackInvokeMode = JSInvokeMode.Inherit;
FormHandle = Handle;
browserCore.OnBrowserMessage += BrowserCore_OnBrowserMessage;
LoadHandler.OnLoadEnd += (_, args) =>
{
if (args.Frame.IsMain)
{
HideInitialSplash();
}
};
}
private POINT GetPostionFromPtr(IntPtr lparam)
{
var scaledX = (int)User32.LoWord(lparam);
var scaledY = (int)User32.HiWord(lparam);
var x = scaledX;
var y = scaledY;
return new POINT(x, y);
}
private void BrowserCore_OnBrowserMessage(object sender, BrowserMessageEventArgs e)
{
if (BrowserHandle == IntPtr.Zero) return;
var msg = (WindowsMessages)e.BrowserMessage.Msg;
if (CanResize && msg == WindowsMessages.WM_MOUSEMOVE)
{
var pt = GetPostionFromPtr(e.BrowserMessage.LParam);
var mode = GetSizeMode(pt);
if (mode != HitTest.HTNOWHERE)
{
User32.ClientToScreen(FormHandle, ref pt);
User32.PostMessage(FormHandle, (uint)WindowsMessages.WM_NCHITTEST, IntPtr.Zero, Win32.MakeParam((IntPtr)pt.x, (IntPtr)pt.y));
e.Handled = true;
}
}
if (msg == WindowsMessages.WM_LBUTTONDOWN)
{
var pt = GetPostionFromPtr(e.BrowserMessage.LParam);
var dragable = (Chromium.DraggableRegion != null && Chromium.DraggableRegion.IsVisible(new Point(pt.x, pt.y)));
var mode = GetSizeMode(pt);
if (CanResize && mode != HitTest.HTNOWHERE)
{
User32.ClientToScreen(FormHandle, ref pt);
User32.PostMessage(FormHandle, (uint)WindowsMessages.WM_NCLBUTTONDOWN, (IntPtr)mode, Win32.MakeParam((IntPtr)pt.x, (IntPtr)pt.y));
e.Handled = true;
}
else if (dragable && !(FormBorderStyle == FormBorderStyle.None && WindowState == FormWindowState.Maximized))
{
User32.PostMessage(FormHandle, (uint)WindowsMessages.WM_USER + 1000, IntPtr.Zero, IntPtr.Zero);
e.Handled = true;
}
}
if (CanResize && msg == WindowsMessages.WM_LBUTTONDBLCLK)
{
var pt = GetPostionFromPtr(e.BrowserMessage.LParam);
var dragable = (Chromium.DraggableRegion != null && Chromium.DraggableRegion.IsVisible(new Point(pt.x, pt.y)));
if (dragable)
{
User32.SendMessage(FormHandle, (uint)WindowsMessages.WM_NCLBUTTONDBLCLK, (IntPtr)HitTest.HTCAPTION, Win32.MakeParam((IntPtr)pt.x, (IntPtr)pt.y));
}
}
}
protected override void DefWndProc(ref Message m)
{
var msg = (WindowsMessages)m.Msg;
if (msg == (WindowsMessages.WM_USER + 1000))
{
User32.ReleaseCapture();
User32.SendMessage(Handle, (uint)WindowsMessages.WM_NCLBUTTONDOWN, (IntPtr)HitTest.HTCAPTION, (IntPtr)0);
}
base.DefWndProc(ref m);
}
}
}