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CEF4Delphi/source/uCEFDownloadImageCallBack.pas
2017-08-21 21:05:08 +03:00

104 lines
3.4 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF3 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 © 2017 Salvador Díaz 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 uCEFDownloadImageCallBack;
{$IFNDEF CPUX64}
{$ALIGN ON}
{$MINENUMSIZE 4}
{$ENDIF}
{$I cef.inc}
interface
uses
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
type
TCefDownloadImageCallbackOwn = class(TCefBaseRefCountedOwn, ICefDownloadImageCallback)
protected
procedure OnDownloadImageFinished(const imageUrl: ustring; httpStatusCode: Integer; const image: ICefImage); virtual; abstract;
public
constructor Create; virtual;
end;
TCefFastDownloadImageCallback = class(TCefDownloadImageCallbackOwn)
protected
FProc: TOnDownloadImageFinishedProc;
procedure OnDownloadImageFinished(const imageUrl: ustring; httpStatusCode: Integer; const image: ICefImage); override;
public
constructor Create(const proc: TOnDownloadImageFinishedProc); reintroduce;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions, uCEFImage;
procedure cef_download_image_callback_on_download_image_finished(self: PCefDownloadImageCallback; const image_url: PCefString; http_status_code: Integer; image: PCefImage); stdcall;
begin
with TCefDownloadImageCallbackOwn(CefGetObject(self)) do
OnDownloadImageFinished(CefString(image_url), http_status_code, TCefImageRef.UnWrap(image));
end;
constructor TCefDownloadImageCallbackOwn.Create;
begin
inherited CreateData(SizeOf(TCefDownloadImageCallback));
with PCefDownloadImageCallback(FData)^ do
on_download_image_finished := cef_download_image_callback_on_download_image_finished;
end;
constructor TCefFastDownloadImageCallback.Create(const proc: TOnDownloadImageFinishedProc);
begin
inherited Create;
FProc := proc;
end;
procedure TCefFastDownloadImageCallback.OnDownloadImageFinished(const imageUrl: ustring; httpStatusCode: Integer; const image: ICefImage);
begin
FProc(imageUrl, httpStatusCode, image);
end;
end.