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New Title Bar UI, Update CefSharp to v69.
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150 changes: 150 additions & 0 deletions
150
Nacollector/Browser/Handler/ChromeWidgetMessageInterceptor.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| using CefSharp.WinForms; | ||
| using Nacollector.Util; | ||
| using System; | ||
| using System.Runtime.InteropServices; | ||
| using System.Text; | ||
| using System.Threading; | ||
| using System.Threading.Tasks; | ||
| using System.Windows.Forms; | ||
|
|
||
| namespace Nacollector.Browser.Handler | ||
| { | ||
| /// <summary> | ||
| /// Intercepts Windows messages sent to the ChromiumWebBrowser control's widget sub-window. | ||
| /// | ||
| /// It is necessary to listen to the widget sub-window because it receives all Windows messages | ||
| /// and forwards them to CEF, rather than the ChromiumWebBrowser.Handle. | ||
| /// | ||
| /// The supplied Action delegate is fired upon each message. | ||
| /// </summary> | ||
| class ChromeWidgetMessageInterceptor : NativeWindow | ||
| { | ||
| private readonly ChromiumWebBrowser browser; | ||
| private Action<Message> forwardAction; | ||
|
|
||
| private ChromeWidgetMessageInterceptor(ChromiumWebBrowser browser, IntPtr chromeWidgetHostHandle, Action<Message> forwardAction) | ||
| { | ||
| AssignHandle(chromeWidgetHostHandle); | ||
|
|
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| this.browser = browser; | ||
| browser.HandleDestroyed += BrowserHandleDestroyed; | ||
|
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| this.forwardAction = forwardAction; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Asynchronously wait for the Chromium widget window to be created for the given ChromiumWebBrowser, | ||
| /// and when created hook into its Windows message loop. | ||
| /// </summary> | ||
| /// <param name="browser">The browser to intercept Windows messages for.</param> | ||
| /// <param name="forwardAction">This action will be called whenever a Windows message is received.</param> | ||
| internal static void SetupLoop(ChromiumWebBrowser browser, Action<Message> forwardAction) | ||
| { | ||
| Task.Factory.StartNew(() => | ||
| { | ||
| try | ||
| { | ||
| bool foundWidget = false; | ||
| while (!foundWidget) | ||
| { | ||
| browser.Invoke((Action)(() => | ||
| { | ||
| IntPtr chromeWidgetHostHandle; | ||
| if (ChromeWidgetHandleFinder.TryFindHandle(browser, out chromeWidgetHostHandle)) | ||
| { | ||
| foundWidget = true; | ||
| new ChromeWidgetMessageInterceptor(browser, chromeWidgetHostHandle, forwardAction); | ||
| } | ||
| else | ||
| { | ||
| // Chrome hasn't yet set up its message-loop window. | ||
| Thread.Sleep(10); | ||
| } | ||
| })); | ||
| } | ||
| } | ||
| catch | ||
| { | ||
| // Errors are likely to occur if browser is disposed, and no good way to check from another thread | ||
| } | ||
| }); | ||
| } | ||
|
|
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| private void BrowserHandleDestroyed(object sender, EventArgs e) | ||
| { | ||
| ReleaseHandle(); | ||
|
|
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| browser.HandleDestroyed -= BrowserHandleDestroyed; | ||
| forwardAction = null; | ||
| } | ||
|
|
||
| protected override void WndProc(ref Message m) | ||
| { | ||
| base.WndProc(ref m); | ||
|
|
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| if (forwardAction != null) | ||
| { | ||
| forwardAction(m); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| class ChromeWidgetHandleFinder | ||
| { | ||
| private delegate bool EnumWindowProc(IntPtr hwnd, IntPtr lParam); | ||
|
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| [DllImport("user32")] | ||
| [return: MarshalAs(UnmanagedType.Bool)] | ||
| private static extern bool EnumChildWindows(IntPtr window, EnumWindowProc callback, IntPtr lParam); | ||
|
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| private readonly IntPtr mainHandle; | ||
| private string seekClassName; | ||
| private IntPtr descendantFound; | ||
|
|
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| private ChromeWidgetHandleFinder(IntPtr handle) | ||
| { | ||
| this.mainHandle = handle; | ||
| } | ||
|
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| private IntPtr FindDescendantByClassName(string className) | ||
| { | ||
| descendantFound = IntPtr.Zero; | ||
| seekClassName = className; | ||
|
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| EnumWindowProc childProc = new EnumWindowProc(EnumWindow); | ||
| EnumChildWindows(this.mainHandle, childProc, IntPtr.Zero); | ||
|
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| return descendantFound; | ||
| } | ||
|
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| [DllImport("user32.dll", CharSet = CharSet.Auto)] | ||
| public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount); | ||
|
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| private bool EnumWindow(IntPtr hWnd, IntPtr lParam) | ||
| { | ||
| StringBuilder buffer = new StringBuilder(128); | ||
| GetClassName(hWnd, buffer, buffer.Capacity); | ||
|
|
||
| if (buffer.ToString() == seekClassName) | ||
| { | ||
| descendantFound = hWnd; | ||
| return false; | ||
| } | ||
|
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| return true; | ||
| } | ||
|
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| /// <summary> | ||
| /// Chrome's message-loop Window isn't created synchronously, so this may not find it. | ||
| /// If so, you need to wait and try again later. | ||
| /// </summary> | ||
| public static bool TryFindHandle(ChromiumWebBrowser browser, out IntPtr chromeWidgetHostHandle) | ||
| { | ||
| var browserHandle = browser.Handle; | ||
| var windowHandleInfo = new ChromeWidgetHandleFinder(browserHandle); | ||
| const string chromeWidgetHostClassName = "Chrome_RenderWidgetHostHWND"; | ||
| chromeWidgetHostHandle = windowHandleInfo.FindDescendantByClassName(chromeWidgetHostClassName); | ||
| return chromeWidgetHostHandle != IntPtr.Zero; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| using CefSharp; | ||
| using CefSharp.Enums; | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Drawing; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
|
|
||
| namespace Nacollector.Browser.Handler | ||
| { | ||
| /** | ||
| * 获取可拖拽区域 | ||
| */ | ||
| public class DragDropHandler : IDragHandler | ||
| { | ||
| public Region draggableRegion = new Region(); | ||
| public event Action<Region> RegionsChanged; | ||
|
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| public bool OnDragEnter(IWebBrowser browserControl, IBrowser browser, IDragData dragData, DragOperationsMask mask) | ||
| { | ||
| return false; | ||
| } | ||
|
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| public void OnDraggableRegionsChanged(IWebBrowser browserControl, IBrowser browser, IList<DraggableRegion> regions) | ||
| { | ||
| if (browser.IsPopup == false) | ||
| { | ||
| draggableRegion = null; | ||
| if (regions.Count > 0) | ||
| { | ||
| foreach (var region in regions) | ||
| { | ||
| // Console.WriteLine(region.X + " - " + region.Y + " - " + region.Width + " - " + region.Height); | ||
| var rect = new Rectangle(region.X, region.Y, region.Width, region.Height); | ||
|
|
||
| if (draggableRegion == null) | ||
| { | ||
| draggableRegion = new Region(rect); | ||
| } | ||
| else | ||
| { | ||
| if (region.Draggable) | ||
| { | ||
| draggableRegion.Union(rect); | ||
| } | ||
| else | ||
| { | ||
| //In the scenario where we have an outer region, that is draggable and it has | ||
| // an inner region that's not, we must exclude the non draggable. | ||
| // Not all scenarios are covered in this example. | ||
| draggableRegion.Exclude(rect); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| RegionsChanged?.Invoke(draggableRegion); | ||
| } | ||
| } | ||
|
|
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| public void Dispose() | ||
| { | ||
| RegionsChanged = null; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <ClassDiagram /> |
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