Update to CEF 3.3497.1829.g004ef91

- Added the TCEFLinkedWindowParent component.
2025-11-23 21:34:53 +02:00 · 2018-09-16 10:39:41 +02:00
parent 8ebb5fb527
commit 0cf7c5f6b3
26 changed files with 477 additions and 271 deletions
--- a/source/uCEFWinControl.pas
+++ b/source/uCEFWinControl.pas
@@ -0,0 +1,173 @@
+// ************************************************************************
+// ***************************** CEF4Delphi *******************************
+// ************************************************************************
+//
+// CEF4Delphi is based on DCEF3 which uses CEF3 to embed a chromium-based
+// browser in Delphi applications.
+//
+// The original license of DCEF3 still applies to CEF4Delphi.
+//
+// For more information about CEF4Delphi visit :
+//         https://www.briskbard.com/index.php?lang=en&pageid=cef
+//
+//        Copyright � 2018 Salvador Diaz Fau. All rights reserved.
+//
+// ************************************************************************
+// ************ vvvv Original license and comments below vvvv *************
+// ************************************************************************
+(*
+ *                       Delphi Chromium Embedded 3
+ *
+ * Usage allowed under the restrictions of the Lesser GNU General Public License
+ * or alternatively the restrictions of the Mozilla Public License 1.1
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
+ * the specific language governing rights and limitations under the License.
+ *
+ * Unit owner : Henri Gourvest <hgourvest@gmail.com>
+ * Web site   : http://www.progdigy.com
+ * Repository : http://code.google.com/p/delphichromiumembedded/
+ * Group      : http://groups.google.com/group/delphichromiumembedded
+ *
+ * Embarcadero Technologies, Inc is not permitted to use or redistribute
+ * this source code without explicit permission.
+ *
+ *)
+
+unit uCEFWinControl;
+
+{$IFDEF FPC}
+  {$MODE OBJFPC}{$H+}
+{$ENDIF}
+
+{$IFNDEF CPUX64}
+  {$ALIGN ON}
+  {$MINENUMSIZE 4}
+{$ENDIF}
+
+{$I cef.inc}
+
+interface
+
+uses
+  {$IFDEF DELPHI16_UP}
+    {$IFDEF MSWINDOWS}WinApi.Windows, {$ENDIF} System.Classes, Vcl.Controls, Vcl.Graphics,
+  {$ELSE}
+    {$IFDEF MSWINDOWS}Windows,{$ENDIF} Classes, Forms, Controls, Graphics,
+    {$IFDEF FPC}
+    LCLProc, LCLType, LCLIntf, LResources, InterfaceBase,
+    {$ENDIF}
+  {$ENDIF}
+  uCEFTypes, uCEFInterfaces;
+
+type
+  TCEFWinControl = class(TWinControl)
+    protected
+      function  GetChildWindowHandle : THandle; virtual;
+      procedure Resize; override;
+
+    public
+      function  TakeSnapshot(var aBitmap : TBitmap) : boolean;
+      function  DestroyChildWindow : boolean;
+      procedure CreateHandle; override;
+      procedure UpdateSize;
+
+      property  ChildWindowHandle : THandle   read GetChildWindowHandle;
+
+    published
+      property  Align;
+      property  Anchors;
+      property  Color;
+      property  Constraints;
+      property  TabStop;
+      property  TabOrder;
+      property  Visible;
+      property  Enabled;
+      property  ShowHint;
+      property  Hint;
+      property  OnResize;
+      property  DoubleBuffered;
+      {$IFDEF DELPHI12_UP}
+      property  ParentDoubleBuffered;
+      {$ENDIF}
+  end;
+
+implementation
+
+uses
+  uCEFMiscFunctions, uCEFClient, uCEFConstants;
+
+function TCEFWinControl.GetChildWindowHandle : THandle;
+begin
+  if not(csDesigning in ComponentState) and HandleAllocated then
+    Result := GetWindow(Handle, GW_CHILD)
+   else
+    Result := 0;
+end;
+
+procedure TCEFWinControl.CreateHandle;
+begin
+  inherited CreateHandle;
+end;
+
+procedure TCEFWinControl.UpdateSize;
+var
+  TempRect : TRect;
+  TempHWND : THandle;
+begin
+  TempHWND := ChildWindowHandle;
+  if (TempHWND = 0) then exit;
+
+  TempRect := GetClientRect;
+
+  SetWindowPos(TempHWND, 0,
+               0, 0, TempRect.right, TempRect.bottom,
+               SWP_NOZORDER);
+end;
+
+function TCEFWinControl.TakeSnapshot(var aBitmap : TBitmap) : boolean;
+var
+  TempHWND   : HWND;
+  TempDC     : HDC;
+  TempRect   : TRect;
+  TempWidth  : Integer;
+  TempHeight : Integer;
+begin
+  Result := False;
+  if (aBitmap = nil) then exit;
+
+  TempHWND := ChildWindowHandle;
+  if (TempHWND = 0) then exit;
+
+  {$IFDEF DELPHI16_UP}Winapi.{$ENDIF}Windows.GetClientRect(TempHWND, TempRect);
+  TempDC     := GetDC(TempHWND);
+  TempWidth  := TempRect.Right  - TempRect.Left;
+  TempHeight := TempRect.Bottom - TempRect.Top;
+
+  aBitmap        := TBitmap.Create;
+  aBitmap.Height := TempHeight;
+  aBitmap.Width  := TempWidth;
+
+  Result := BitBlt(aBitmap.Canvas.Handle, 0, 0, TempWidth, TempHeight,
+                   TempDC, 0, 0, SRCCOPY);
+
+  ReleaseDC(TempHWND, TempDC);
+end;
+
+function TCEFWinControl.DestroyChildWindow : boolean;
+var
+  TempHWND : HWND;
+begin
+  TempHWND := ChildWindowHandle;
+  Result   := (TempHWND <> 0) and DestroyWindow(TempHWND);
+end;
+
+procedure TCEFWinControl.Resize;
+begin
+  inherited Resize;
+
+  UpdateSize;
+end;
+
+end.