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CEF4Delphi/source/uCEFStreamWriter.pas
Salvador Díaz Fau fd1e936198 Update to CEF 79.0.10
- Removed CEFSentinel from some demos because it's no longer necessary.
- Updated copyright year.
2020-01-01 12:48:10 +01:00

121 lines
3.8 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 © 2020 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 uCEFStreamWriter;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
type
TCefStreamWriterRef = class(TCefBaseRefCountedRef, ICefStreamWriter)
protected
function write(const ptr: Pointer; size, n: NativeUInt): NativeUInt;
function Seek(offset: Int64; whence: Integer): Integer;
function Tell: Int64;
function Flush: Integer;
function MayBlock: Boolean;
public
class function UnWrap(data: Pointer): ICefStreamWriter;
class function CreateForFile(const fileName: ustring): ICefStreamWriter;
class function CreateForHandler(const handler: ICefWriteHandler): ICefStreamWriter;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions;
class function TCefStreamWriterRef.CreateForFile(const fileName: ustring): ICefStreamWriter;
var
TempFileName : TCefString;
begin
TempFileName := CefString(fileName);
Result := UnWrap(cef_stream_writer_create_for_file(@TempFileName));
end;
class function TCefStreamWriterRef.CreateForHandler(const handler: ICefWriteHandler): ICefStreamWriter;
begin
Result := UnWrap(cef_stream_writer_create_for_handler(CefGetData(handler)));
end;
function TCefStreamWriterRef.Flush: Integer;
begin
Result := PCefStreamWriter(FData)^.flush(PCefStreamWriter(FData));
end;
function TCefStreamWriterRef.MayBlock: Boolean;
begin
Result := PCefStreamWriter(FData)^.may_block(PCefStreamWriter(FData)) <> 0;
end;
function TCefStreamWriterRef.Seek(offset: Int64; whence: Integer): Integer;
begin
Result := PCefStreamWriter(FData)^.seek(PCefStreamWriter(FData), offset, whence);
end;
function TCefStreamWriterRef.Tell: Int64;
begin
Result := PCefStreamWriter(FData)^.tell(PCefStreamWriter(FData));
end;
class function TCefStreamWriterRef.UnWrap(data: Pointer): ICefStreamWriter;
begin
if data <> nil then
Result := Create(data) as ICefStreamWriter
else
Result := nil;
end;
function TCefStreamWriterRef.write(const ptr: Pointer; size, n: NativeUInt): NativeUInt;
begin
Result := PCefStreamWriter(FData)^.write(PCefStreamWriter(FData), ptr, size, n);
end;
end.