mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-12-04 09:26:52 +02:00
189 lines
7.0 KiB
ObjectPascal
189 lines
7.0 KiB
ObjectPascal
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// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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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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// Copyright � 2020 Salvador Diaz Fau. All rights reserved.
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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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unit uCEFMediaObserverComponent;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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{$I cef.inc}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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{$IFDEF MSWINDOWS}WinApi.Windows, WinApi.Messages, WinApi.ActiveX,{$ENDIF}
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System.Classes, System.Math,
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{$ELSE}
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{$IFDEF MSWINDOWS}Windows, ActiveX,{$ENDIF} Classes, Math,
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{$IFDEF FPC}
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LCLProc, LCLType, LCLIntf, LResources, LMessages, InterfaceBase,
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{$ELSE}
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Messages,
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{$ENDIF}
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{$ENDIF}
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uCEFTypes, uCEFInterfaces, uCEFMediaObserver, uCEFMediaObserverEvents;
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type
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{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
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TCEFMediaObserverComponent = class(TComponent, ICefMediaObserverEvents)
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protected
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FMediaObserver : ICefMediaObserver;
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FOnSinks : TOnSinksEvent;
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FOnRoutes : TOnRoutesEvent;
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FOnRouteStateChanged : TOnRouteStateChangedEvent;
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FOnRouteMessageReceived : TOnRouteMessageReceivedEvent;
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// ICefMediaObserverEvents
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procedure doOnSinks(const sinks: TCefMediaSinkArray); virtual;
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procedure doOnRoutes(const routes: TCefMediaRouteArray); virtual;
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procedure doOnRouteStateChanged(const route: ICefMediaRoute; state: TCefMediaRouteConnectionState); virtual;
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procedure doOnRouteMessageReceived(const route: ICefMediaRoute; const message_: Pointer; message_size: NativeUInt); virtual;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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procedure AfterConstruction; override;
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property MediaObserver : ICefMediaObserver read FMediaObserver;
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published
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property OnSinks : TOnSinksEvent read FOnSinks write FOnSinks;
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property OnRoutes : TOnRoutesEvent read FOnRoutes write FOnRoutes;
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property OnRouteStateChanged : TOnRouteStateChangedEvent read FOnRouteStateChanged write FOnRouteStateChanged;
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property OnRouteMessageReceived : TOnRouteMessageReceivedEvent read FOnRouteMessageReceived write FOnRouteMessageReceived;
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end;
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{$IFDEF FPC}
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procedure Register;
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{$ENDIF}
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implementation
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// *********************************************************
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// ********************** ATTENTION ! **********************
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// *********************************************************
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// ** **
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// ** MANY OF THE EVENTS IN CEF4DELPHI COMPONENTS LIKE **
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// ** TCHROMIUM, TFMXCHROMIUM OR TCEFAPPLICATION ARE **
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// ** EXECUTED IN A CEF THREAD BY DEFAULT. **
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// ** **
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// ** WINDOWS CONTROLS MUST BE CREATED AND DESTROYED IN **
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// ** THE SAME THREAD TO AVOID ERRORS. **
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// ** SOME OF THEM RECREATE THE HANDLERS IF THEY ARE **
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// ** MODIFIED AND CAN CAUSE THE SAME ERRORS. **
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// ** **
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// ** DON'T CREATE, MODIFY OR DESTROY WINDOWS CONTROLS **
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// ** INSIDE THE CEF4DELPHI EVENTS AND USE **
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// ** SYNCHRONIZATION OBJECTS TO PROTECT VARIABLES AND **
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// ** FIELDS IF THEY ARE ALSO USED IN THE MAIN THREAD. **
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// ** **
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// ** READ THIS FOR MORE INFORMATION : **
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// ** https://www.briskbard.com/index.php?pageid=cef **
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// ** **
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// ** USE OUR FORUMS FOR MORE QUESTIONS : **
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// ** https://www.briskbard.com/forum/ **
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// ** **
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// *********************************************************
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// *********************************************************
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constructor TCEFMediaObserverComponent.Create(AOwner: TComponent);
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begin
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inherited Create(aOwner);
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FMediaObserver := nil;
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FOnSinks := nil;
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FOnRoutes := nil;
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FOnRouteStateChanged := nil;
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FOnRouteMessageReceived := nil;
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end;
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destructor TCEFMediaObserverComponent.Destroy;
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begin
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FMediaObserver := nil;
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inherited Destroy;
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end;
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procedure TCEFMediaObserverComponent.AfterConstruction;
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begin
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inherited AfterConstruction;
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FMediaObserver := TCustomMediaObserver.Create(self);
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end;
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procedure TCEFMediaObserverComponent.doOnSinks(const sinks: TCefMediaSinkArray);
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begin
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if assigned(FOnSinks) then
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FOnSinks(self, sinks);
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end;
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procedure TCEFMediaObserverComponent.doOnRoutes(const routes: TCefMediaRouteArray);
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begin
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if assigned(FOnRoutes) then
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FOnRoutes(self, routes);
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end;
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procedure TCEFMediaObserverComponent.doOnRouteStateChanged(const route : ICefMediaRoute;
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state : TCefMediaRouteConnectionState);
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begin
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if assigned(FOnRouteStateChanged) then
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FOnRouteStateChanged(self, route, state);
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end;
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procedure TCEFMediaObserverComponent.doOnRouteMessageReceived(const route : ICefMediaRoute;
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const message_ : Pointer;
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message_size : NativeUInt);
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begin
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if assigned(FOnRouteMessageReceived) then
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FOnRouteMessageReceived(self, route, message_, message_size);
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end;
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{$IFDEF FPC}
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procedure Register;
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begin
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{$I res/tcefmediaobservercomponent.lrs}
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RegisterComponents('Chromium', [TCEFMediaObserverComponent]);
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end;
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{$ENDIF}
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end.
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