CEF4Delphi/demos/Delphi_FMX_Linux/FMXExternalPumpBrowser2/uCEFLoader.pas
Salvador Díaz Fau 43ab8ef953 Added TCEFTimerWorkScheduler
- Moved the GlobalCEFWorkScheduler creation after the GlobalCEFApp creation in all demos using it.
- Replaced TCEFWorkScheduler by TCEFTimerWorkScheduler in FMX demos for Linux and MacOS.
- Fixed context menu issue in FMXExternalPumpBrowser2 for Linux
- Fixed stability issues in FMXExternalPumpBrowser for MacOS
- Fixed 32bit build issues in TinyBrowser and ToolBoxBrowser2 demos.
- Added uCEFMacOSInterfaces and uCEFMacOSCustomCocoaTimer.
2021-06-04 15:10:40 +02:00

126 lines
5.2 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF 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 © 2021 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 uCEFLoader;
interface
uses
// This unit *MUST NOT* have any reference to FMX units.
// The reason for this is that Delphi will change the initialization order
// and then FMX (including GTK) will be initialized before this unit.
// That's the reason why we use GlobalCEFWorkScheduler even if this is an FMX
// project.
// Read the answer to this question for more more information :
// https://stackoverflow.com/questions/52103407/changing-the-initialization-order-of-the-unit-in-delphi
System.IOUtils,
uCEFApplication, uCEFConstants, uCEFTimerWorkScheduler, uCEFLinuxFunctions,
uCEFLinuxTypes;
implementation
function CustomX11ErrorHandler(Display:PDisplay; ErrorEv:PXErrorEvent):longint;cdecl;
begin
Result := 0;
end;
function CustomXIOErrorHandler(Display:PDisplay):longint;cdecl;
begin
Result := 0;
end;
procedure GlobalCEFApp_OnScheduleMessagePumpWork(const aDelayMS : int64);
begin
if (GlobalCEFTimerWorkScheduler <> nil) then
GlobalCEFTimerWorkScheduler.ScheduleMessagePumpWork(aDelayMS);
end;
procedure InitializeGlobalCEFApp;
begin
GlobalCEFApp := TCefApplication.Create;
GlobalCEFApp.WindowlessRenderingEnabled := True;
GlobalCEFApp.EnableHighDPISupport := True;
GlobalCEFApp.ExternalMessagePump := True;
GlobalCEFApp.MultiThreadedMessageLoop := False;
GlobalCEFApp.DisableZygote := True;
GlobalCEFApp.OnScheduleMessagePumpWork := GlobalCEFApp_OnScheduleMessagePumpWork;
// Use these settings if you already have the CEF binaries in a directory called "cef" inside your home directory.
// You can also use the "Deployment" window but debugging might be slower.
GlobalCEFApp.FrameworkDirPath := TPath.GetHomePath + TPath.DirectorySeparatorChar + 'cef';
GlobalCEFApp.ResourcesDirPath := GlobalCEFApp.FrameworkDirPath;
GlobalCEFApp.LocalesDirPath := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'locales';
GlobalCEFApp.cache := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'cache';
GlobalCEFApp.UserDataPath := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'User Data';
GlobalCEFApp.BrowserSubprocessPath := GlobalCEFApp.FrameworkDirPath + TPath.DirectorySeparatorChar + 'FMXExternalPumpBrowser2_sp';
// TCEFTimerWorkScheduler will call cef_do_message_loop_work when
// it's told in the GlobalCEFApp.OnScheduleMessagePumpWork event.
// GlobalCEFTimerWorkScheduler needs to be created before the
// GlobalCEFApp.StartMainProcess call.
// We use CreateDelayed in order to have a single thread in the process while
// CEF is initialized.
GlobalCEFTimerWorkScheduler := TCEFTimerWorkScheduler.Create;
{$IFDEF DEBUG}
GlobalCEFApp.LogFile := TPath.GetHomePath + TPath.DirectorySeparatorChar + 'debug.log';
GlobalCEFApp.LogSeverity := LOGSEVERITY_INFO;
{$ENDIF}
// This is a workaround to fix a Chromium initialization crash.
// The current FMX solution to initialize CEF with a loader unit
// creates a race condition with the media key controller in Chromium.
GlobalCEFApp.DisableFeatures := 'HardwareMediaKeyHandling';
GlobalCEFApp.StartMainProcess;
// Install xlib error handlers so that the application won't be terminated
// on non-fatal errors. Must be done after initializing GTK.
XSetErrorHandler(@CustomX11ErrorHandler);
XSetIOErrorHandler(@CustomXIOErrorHandler);
end;
initialization
InitializeGlobalCEFApp;
finalization
if (GlobalCEFTimerWorkScheduler <> nil) then GlobalCEFTimerWorkScheduler.StopScheduler;
DestroyGlobalCEFApp;
DestroyGlobalCEFTimerWorkScheduler;
end.