mirror of
https://github.com/salvadordf/CEF4Delphi.git
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126 lines
5.2 KiB
ObjectPascal
126 lines
5.2 KiB
ObjectPascal
// ************************************************************************
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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 © 2022 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 uCEFLoader;
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interface
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uses
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// This unit *MUST NOT* have any reference to FMX units.
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// The reason for this is that Delphi will change the initialization order
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// and then FMX (including GTK) will be initialized before this unit.
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// That's the reason why we use GlobalCEFWorkScheduler even if this is an FMX
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// project.
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// Read the answer to this question for more more information :
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// https://stackoverflow.com/questions/52103407/changing-the-initialization-order-of-the-unit-in-delphi
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System.IOUtils,
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uCEFApplication, uCEFConstants, uCEFTimerWorkScheduler, uCEFLinuxFunctions,
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uCEFLinuxTypes;
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implementation
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function CustomX11ErrorHandler(Display:PDisplay; ErrorEv:PXErrorEvent):longint;cdecl;
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begin
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Result := 0;
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end;
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function CustomXIOErrorHandler(Display:PDisplay):longint;cdecl;
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begin
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Result := 0;
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end;
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procedure GlobalCEFApp_OnScheduleMessagePumpWork(const aDelayMS : int64);
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begin
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if (GlobalCEFTimerWorkScheduler <> nil) then
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GlobalCEFTimerWorkScheduler.ScheduleMessagePumpWork(aDelayMS);
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end;
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procedure InitializeGlobalCEFApp;
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begin
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GlobalCEFApp := TCefApplication.Create;
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GlobalCEFApp.WindowlessRenderingEnabled := True;
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GlobalCEFApp.EnableHighDPISupport := True;
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GlobalCEFApp.ExternalMessagePump := True;
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GlobalCEFApp.MultiThreadedMessageLoop := False;
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GlobalCEFApp.DisableZygote := True;
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GlobalCEFApp.OnScheduleMessagePumpWork := GlobalCEFApp_OnScheduleMessagePumpWork;
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// Use these settings if you already have the CEF binaries in a directory called "cef" inside your home directory.
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// You can also use the "Deployment" window but debugging might be slower.
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GlobalCEFApp.FrameworkDirPath := TPath.GetHomePath + TPath.DirectorySeparatorChar + 'cef';
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GlobalCEFApp.ResourcesDirPath := GlobalCEFApp.FrameworkDirPath;
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GlobalCEFApp.LocalesDirPath := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'locales';
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GlobalCEFApp.cache := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'cache';
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GlobalCEFApp.UserDataPath := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'User Data';
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GlobalCEFApp.BrowserSubprocessPath := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'FMXExternalPumpBrowser2_sp';
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// TCEFTimerWorkScheduler will call cef_do_message_loop_work when
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// it's told in the GlobalCEFApp.OnScheduleMessagePumpWork event.
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// GlobalCEFTimerWorkScheduler needs to be created before the
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// GlobalCEFApp.StartMainProcess call.
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// We use CreateDelayed in order to have a single thread in the process while
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// CEF is initialized.
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GlobalCEFTimerWorkScheduler := TCEFTimerWorkScheduler.Create;
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{$IFDEF DEBUG}
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GlobalCEFApp.LogFile := TPath.GetHomePath + TPath.DirectorySeparatorChar + 'debug.log';
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GlobalCEFApp.LogSeverity := LOGSEVERITY_INFO;
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{$ENDIF}
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// This is a workaround to fix a Chromium initialization crash.
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// The current FMX solution to initialize CEF with a loader unit
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// creates a race condition with the media key controller in Chromium.
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GlobalCEFApp.DisableFeatures := 'HardwareMediaKeyHandling';
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GlobalCEFApp.StartMainProcess;
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// Install xlib error handlers so that the application won't be terminated
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// on non-fatal errors. Must be done after initializing GTK.
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XSetErrorHandler(@CustomX11ErrorHandler);
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XSetIOErrorHandler(@CustomXIOErrorHandler);
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end;
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initialization
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InitializeGlobalCEFApp;
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finalization
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if (GlobalCEFTimerWorkScheduler <> nil) then GlobalCEFTimerWorkScheduler.StopScheduler;
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DestroyGlobalCEFApp;
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DestroyGlobalCEFTimerWorkScheduler;
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end.
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