2018-04-18 10:25:38 +02:00
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// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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2019-10-19 10:58:34 +02:00
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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2018-04-18 10:25:38 +02:00
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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2020-01-01 13:48:10 +02:00
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// Copyright � 2020 Salvador Diaz Fau. All rights reserved.
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2018-04-18 10:25:38 +02:00
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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2019-04-04 10:26:44 +02:00
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unit uCEFFMXWindowParent;
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2018-04-18 10:25:38 +02:00
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2018-11-22 16:02:21 +02:00
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{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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2018-04-18 10:25:38 +02:00
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{$I cef.inc}
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interface
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uses
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System.Classes, System.Types, System.UITypes,
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{$IFDEF MSWINDOWS}
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WinApi.Windows,
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{$ENDIF}
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FMX.Controls, FMX.Types, FMX.Forms;
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type
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2018-12-09 12:11:59 +02:00
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{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
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2018-04-18 10:25:38 +02:00
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TFMXWindowParent = class(TCommonCustomForm)
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protected
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{$IFDEF MSWINDOWS}
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function GetChildWindowHandle : HWND;
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procedure UpdateSize;
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{$ENDIF}
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procedure Resize; override;
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public
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{$IFDEF MSWINDOWS}
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procedure Reparent(const aNewParentHandle : TWindowHandle);
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property ChildWindowHandle : HWND read GetChildWindowHandle;
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{$ENDIF}
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published
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property Visible;
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property Height;
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property Width;
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2020-02-03 13:02:30 +02:00
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property Touch;
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property OnGesture;
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2018-04-18 10:25:38 +02:00
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end;
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implementation
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// This class inherits from TCommonCustomForm because CEF needs a Windows handle
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// to create the browser in normal mode.
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// TFMXWindowParent has to be created and resized at runtime.
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// It's also necessary to call "Reparent" to add this component as a child component to your form.
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uses
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System.SysUtils, FMX.Platform, FMX.Platform.Win;
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procedure TFMXWindowParent.Resize;
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begin
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inherited Resize;
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{$IFDEF MSWINDOWS}
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UpdateSize;
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{$ENDIF}
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end;
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{$IFDEF MSWINDOWS}
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function TFMXWindowParent.GetChildWindowHandle : HWND;
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var
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TempHWND : HWND;
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begin
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TempHWND := FmxHandleToHWND(Handle);
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Result := WinApi.Windows.GetWindow(TempHWND, GW_CHILD);
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end;
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procedure TFMXWindowParent.UpdateSize;
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var
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TempHWND, TempChildHWND : HWND;
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TempRect : System.Types.TRect;
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TempClientRect : TRectF;
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begin
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TempChildHWND := ChildWindowHandle;
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if (TempChildHWND = 0) then exit;
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TempHWND := BeginDeferWindowPos(1);
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try
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TempClientRect := ClientRect;
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TempRect.Left := round(TempClientRect.Left);
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TempRect.Top := round(TempClientRect.Top);
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TempRect.Right := round(TempClientRect.Right);
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TempRect.Bottom := round(TempClientRect.Bottom);
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TempHWND := DeferWindowPos(TempHWND, TempChildHWND, HWND_TOP,
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TempRect.left, TempRect.top, TempRect.right - TempRect.left, TempRect.bottom - TempRect.top,
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SWP_NOZORDER);
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finally
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EndDeferWindowPos(TempHWND);
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end;
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end;
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procedure TFMXWindowParent.Reparent(const aNewParentHandle : TWindowHandle);
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var
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TempChildHandle, TempParentHandle : HWND;
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begin
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if (aNewParentHandle <> nil) then
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begin
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TempChildHandle := FmxHandleToHWND(Handle);
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TempParentHandle := FmxHandleToHWND(aNewParentHandle);
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if (TempChildHandle <> 0) and (TempParentHandle <> 0) then
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begin
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SetWindowLong(TempChildHandle, GWL_STYLE, WS_CHILDWINDOW);
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WinApi.Windows.SetParent(TempChildHandle, TempParentHandle);
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end;
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end;
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end;
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{$ENDIF}
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end.
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