mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-12-04 09:26:52 +02:00
394 lines
11 KiB
ObjectPascal
394 lines
11 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 uCEFBaseRefCounted;
|
|
|
|
{$IFDEF FPC}
|
|
{$MODE OBJFPC}{$H+}
|
|
{$ENDIF}
|
|
|
|
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
|
|
{$MINENUMSIZE 4}
|
|
|
|
{$I cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
{$IFDEF DELPHI16_UP}
|
|
System.SysUtils,
|
|
{$ELSE}
|
|
SysUtils,
|
|
{$ENDIF}
|
|
uCEFInterfaces;
|
|
|
|
type
|
|
TLoggingInterfacedObject = class(TInterfacedObject)
|
|
protected
|
|
function _AddRef: Integer; reintroduce; stdcall;
|
|
function _Release: Integer; reintroduce; stdcall;
|
|
public
|
|
class function NewInstance: TObject; override;
|
|
end;
|
|
|
|
|
|
TCefBaseRefCountedOwn = class({$IFDEF INTFLOG}TLoggingInterfacedObject{$ELSE}TInterfacedObject{$ENDIF}, ICefBaseRefCounted)
|
|
protected
|
|
FData: Pointer;
|
|
|
|
function HasOneRef : boolean;
|
|
function HasAtLeastOneRef : boolean;
|
|
|
|
public
|
|
constructor CreateData(size: Cardinal; owned : boolean = False); virtual;
|
|
destructor Destroy; override;
|
|
function SameAs(aData : Pointer) : boolean; overload;
|
|
function SameAs(const aBaseRefCounted : ICefBaseRefCounted) : boolean; overload;
|
|
procedure DestroyOtherRefs;
|
|
function Wrap: Pointer;
|
|
end;
|
|
|
|
TCefBaseRefCountedRef = class(TInterfacedObject, ICefBaseRefCounted)
|
|
protected
|
|
FData: Pointer;
|
|
|
|
function HasOneRef : boolean;
|
|
function HasAtLeastOneRef : boolean;
|
|
|
|
public
|
|
constructor Create(data: Pointer); virtual;
|
|
destructor Destroy; override;
|
|
function SameAs(aData : Pointer) : boolean; overload;
|
|
function SameAs(const aBaseRefCounted : ICefBaseRefCounted) : boolean; overload;
|
|
procedure DestroyOtherRefs;
|
|
function Wrap: Pointer;
|
|
class function UnWrap(data: Pointer): ICefBaseRefCounted;
|
|
end;
|
|
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
uCEFTypes, uCEFMiscFunctions;
|
|
|
|
|
|
// ***********************************************
|
|
// ************ TCefBaseRefCountedOwn ************
|
|
// ***********************************************
|
|
|
|
|
|
procedure cef_base_add_ref(self: PCefBaseRefCounted); stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
begin
|
|
TempObject := CefGetObject(self);
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefBaseRefCountedOwn) then
|
|
TCefBaseRefCountedOwn(TempObject)._AddRef;
|
|
end;
|
|
|
|
function cef_base_release_ref(self: PCefBaseRefCounted): Integer; stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
begin
|
|
TempObject := CefGetObject(self);
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefBaseRefCountedOwn) then
|
|
Result := TCefBaseRefCountedOwn(TempObject)._Release
|
|
else
|
|
Result := 0;
|
|
end;
|
|
|
|
function cef_base_has_one_ref(self: PCefBaseRefCounted): Integer; stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
begin
|
|
TempObject := CefGetObject(self);
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefBaseRefCountedOwn) then
|
|
Result := Ord(TCefBaseRefCountedOwn(TempObject).FRefCount = 1)
|
|
else
|
|
Result := Ord(False);
|
|
end;
|
|
|
|
function cef_base_has_at_least_one_ref(self: PCefBaseRefCounted): Integer; stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
begin
|
|
TempObject := CefGetObject(self);
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefBaseRefCountedOwn) then
|
|
Result := Ord(TCefBaseRefCountedOwn(TempObject).FRefCount >= 1)
|
|
else
|
|
Result := Ord(False);
|
|
end;
|
|
|
|
procedure cef_base_add_ref_owned(self: PCefBaseRefCounted); stdcall;
|
|
begin
|
|
//
|
|
end;
|
|
|
|
function cef_base_release_owned(self: PCefBaseRefCounted): Integer; stdcall;
|
|
begin
|
|
Result := 1;
|
|
end;
|
|
|
|
function cef_base_has_one_ref_owned(self: PCefBaseRefCounted): Integer; stdcall;
|
|
begin
|
|
Result := 1;
|
|
end;
|
|
|
|
function cef_base_has_at_least_one_ref_owned(self: PCefBaseRefCounted): Integer; stdcall;
|
|
begin
|
|
Result := 1;
|
|
end;
|
|
|
|
constructor TCefBaseRefCountedOwn.CreateData(size: Cardinal; owned : boolean);
|
|
begin
|
|
GetMem(FData, size + SizeOf(Pointer));
|
|
PPointer(FData)^ := Self;
|
|
Inc(PByte(FData), SizeOf(Pointer));
|
|
FillChar(FData^, size, 0);
|
|
PCefBaseRefCounted(FData)^.size := size;
|
|
|
|
if owned then
|
|
begin
|
|
PCefBaseRefCounted(FData)^.add_ref := {$IFDEF FPC}@{$ENDIF}cef_base_add_ref_owned;
|
|
PCefBaseRefCounted(FData)^.release := {$IFDEF FPC}@{$ENDIF}cef_base_release_owned;
|
|
PCefBaseRefCounted(FData)^.has_one_ref := {$IFDEF FPC}@{$ENDIF}cef_base_has_one_ref_owned;
|
|
PCefBaseRefCounted(FData)^.has_at_least_one_ref := {$IFDEF FPC}@{$ENDIF}cef_base_has_at_least_one_ref_owned;
|
|
end
|
|
else
|
|
begin
|
|
PCefBaseRefCounted(FData)^.add_ref := {$IFDEF FPC}@{$ENDIF}cef_base_add_ref;
|
|
PCefBaseRefCounted(FData)^.release := {$IFDEF FPC}@{$ENDIF}cef_base_release_ref;
|
|
PCefBaseRefCounted(FData)^.has_one_ref := {$IFDEF FPC}@{$ENDIF}cef_base_has_one_ref;
|
|
PCefBaseRefCounted(FData)^.has_at_least_one_ref := {$IFDEF FPC}@{$ENDIF}cef_base_has_at_least_one_ref;
|
|
end;
|
|
end;
|
|
|
|
destructor TCefBaseRefCountedOwn.Destroy;
|
|
var
|
|
TempPointer : pointer;
|
|
begin
|
|
try
|
|
if (FData <> nil) then
|
|
begin
|
|
TempPointer := FData;
|
|
Dec(PByte(TempPointer), SizeOf(Pointer));
|
|
FillChar(TempPointer^, SizeOf(Pointer) + SizeOf(TCefBaseRefCounted), 0);
|
|
FreeMem(TempPointer);
|
|
end;
|
|
finally
|
|
FData := nil;
|
|
inherited Destroy;
|
|
end;
|
|
end;
|
|
|
|
function TCefBaseRefCountedOwn.SameAs(aData : Pointer) : boolean;
|
|
begin
|
|
Result := (FData = aData);
|
|
end;
|
|
|
|
function TCefBaseRefCountedOwn.SameAs(const aBaseRefCounted : ICefBaseRefCounted) : boolean;
|
|
var
|
|
TempData : Pointer;
|
|
begin
|
|
Result := False;
|
|
|
|
if (aBaseRefCounted <> nil) then
|
|
begin
|
|
TempData := aBaseRefCounted.Wrap;
|
|
|
|
if (TempData <> nil) then
|
|
begin
|
|
Result := SameAs(TempData);
|
|
|
|
if assigned(PCefBaseRefCounted(TempData)^.release) then
|
|
PCefBaseRefCounted(TempData)^.release(PCefBaseRefCounted(TempData));
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TCefBaseRefCountedOwn.DestroyOtherRefs;
|
|
begin
|
|
while HasAtLeastOneRef and not(HasOneRef) do
|
|
_Release;
|
|
end;
|
|
|
|
function TCefBaseRefCountedOwn.Wrap: Pointer;
|
|
begin
|
|
Result := FData;
|
|
|
|
if (FData <> nil) and Assigned(PCefBaseRefCounted(FData)^.add_ref) then
|
|
PCefBaseRefCounted(FData)^.add_ref(PCefBaseRefCounted(FData));
|
|
end;
|
|
|
|
function TCefBaseRefCountedOwn.HasOneRef : boolean;
|
|
begin
|
|
if (FData <> nil) and Assigned(PCefBaseRefCounted(FData)^.has_one_ref) then
|
|
Result := PCefBaseRefCounted(FData)^.has_one_ref(PCefBaseRefCounted(FData)) <> 0
|
|
else
|
|
Result := False;
|
|
end;
|
|
|
|
function TCefBaseRefCountedOwn.HasAtLeastOneRef : boolean;
|
|
begin
|
|
if (FData <> nil) and Assigned(PCefBaseRefCounted(FData)^.has_at_least_one_ref) then
|
|
Result := PCefBaseRefCounted(FData)^.has_at_least_one_ref(PCefBaseRefCounted(FData)) <> 0
|
|
else
|
|
Result := False;
|
|
end;
|
|
|
|
|
|
// ***********************************************
|
|
// ************ TCefBaseRefCountedRef ************
|
|
// ***********************************************
|
|
|
|
|
|
constructor TCefBaseRefCountedRef.Create(data: Pointer);
|
|
begin
|
|
Assert(data <> nil);
|
|
FData := data;
|
|
end;
|
|
|
|
destructor TCefBaseRefCountedRef.Destroy;
|
|
begin
|
|
try
|
|
if (FData <> nil) and assigned(PCefBaseRefCounted(FData)^.release) then
|
|
begin
|
|
{$IFDEF INTFLOG}
|
|
CefDebugLog(ClassName + '.Destroy -> FRefCount = ' +
|
|
IntToStr(PCefBaseRefCounted(FData)^.release(PCefBaseRefCounted(FData))));
|
|
{$ELSE}
|
|
PCefBaseRefCounted(FData)^.release(PCefBaseRefCounted(FData));
|
|
{$ENDIF}
|
|
end;
|
|
finally
|
|
FData := nil;
|
|
inherited Destroy;
|
|
end;
|
|
end;
|
|
|
|
function TCefBaseRefCountedRef.SameAs(aData : Pointer) : boolean;
|
|
begin
|
|
Result := (FData = aData);
|
|
end;
|
|
|
|
function TCefBaseRefCountedRef.SameAs(const aBaseRefCounted : ICefBaseRefCounted) : boolean;
|
|
var
|
|
TempData : Pointer;
|
|
begin
|
|
Result := False;
|
|
|
|
if (aBaseRefCounted <> nil) then
|
|
begin
|
|
TempData := aBaseRefCounted.Wrap;
|
|
|
|
if (TempData <> nil) then
|
|
begin
|
|
Result := SameAs(TempData);
|
|
|
|
if assigned(PCefBaseRefCounted(TempData)^.release) then
|
|
PCefBaseRefCounted(TempData)^.release(PCefBaseRefCounted(TempData));
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
class function TCefBaseRefCountedRef.UnWrap(data: Pointer): ICefBaseRefCounted;
|
|
begin
|
|
if (data <> nil) then
|
|
Result := Create(data) as ICefBaseRefCounted
|
|
else
|
|
Result := nil;
|
|
end;
|
|
|
|
function TCefBaseRefCountedRef.Wrap: Pointer;
|
|
begin
|
|
Result := FData;
|
|
|
|
if (FData <> nil) and Assigned(PCefBaseRefCounted(FData)^.add_ref) then
|
|
begin
|
|
PCefBaseRefCounted(FData)^.add_ref(PCefBaseRefCounted(FData));
|
|
{$IFDEF INTFLOG}
|
|
CefDebugLog(ClassName + '.Wrap');
|
|
{$ENDIF}
|
|
end;
|
|
end;
|
|
|
|
function TCefBaseRefCountedRef.HasOneRef : boolean;
|
|
begin
|
|
Result := (PCefBaseRefCounted(FData)^.has_one_ref(PCefBaseRefCounted(FData)) <> 0);
|
|
end;
|
|
|
|
function TCefBaseRefCountedRef.HasAtLeastOneRef : boolean;
|
|
begin
|
|
Result := (PCefBaseRefCounted(FData)^.has_at_least_one_ref(PCefBaseRefCounted(FData)) <> 0);
|
|
end;
|
|
|
|
procedure TCefBaseRefCountedRef.DestroyOtherRefs;
|
|
begin
|
|
//
|
|
end;
|
|
|
|
|
|
// ************************************************
|
|
// *********** TLoggingInterfacedObject ***********
|
|
// ************************************************
|
|
|
|
|
|
function TLoggingInterfacedObject._AddRef: Integer; stdcall;
|
|
begin
|
|
Result := inherited _AddRef;
|
|
CefDebugLog(ClassName + '._AddRef -> FRefCount = ' + IntToStr(Result));
|
|
end;
|
|
|
|
function TLoggingInterfacedObject._Release: Integer; stdcall;
|
|
begin
|
|
CefDebugLog(ClassName + '._Release -> FRefCount = ' + IntToStr(pred(RefCount)));
|
|
Result := inherited _Release;
|
|
end;
|
|
|
|
class function TLoggingInterfacedObject.NewInstance: TObject;
|
|
begin
|
|
Result := inherited NewInstance;
|
|
CefDebugLog(ClassName + '.NewInstance -> FRefCount = ' + IntToStr(TInterfacedObject(Result).RefCount));
|
|
end;
|
|
|
|
end.
|