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CEF4Delphi/source/uCEFResourceBundleHandler.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

213 lines
7.8 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 uCEFResourceBundleHandler;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes, uCEFApplicationCore;
type
TCefResourceBundleHandlerOwn = class(TCefBaseRefCountedOwn, ICefResourceBundleHandler)
protected
function GetLocalizedString(stringid: Integer; var stringVal: ustring): Boolean; virtual; abstract;
function GetDataResource(resourceId: Integer; var data: Pointer; var dataSize: NativeUInt): Boolean; virtual; abstract;
function GetDataResourceForScale(resourceId: Integer; scaleFactor: TCefScaleFactor; var data: Pointer; var dataSize: NativeUInt): Boolean; virtual; abstract;
public
constructor Create; virtual;
end;
TCefCustomResourceBundleHandler = class(TCefResourceBundleHandlerOwn)
protected
FCefApp : TCefApplicationCore;
function GetLocalizedString(stringid: Integer; var stringVal: ustring): Boolean; override;
function GetDataResource(resourceId: Integer; var data: Pointer; var dataSize: NativeUInt): Boolean; override;
function GetDataResourceForScale(resourceId: Integer; scaleFactor: TCefScaleFactor; var data: Pointer; var dataSize: NativeUInt): Boolean; override;
public
constructor Create(const aCefApp : TCefApplicationCore); reintroduce;
destructor Destroy; override;
end;
implementation
uses
{$IFDEF DELPHI16_UP}
System.SysUtils,
{$ELSE}
SysUtils,
{$ENDIF}
uCEFMiscFunctions, uCEFLibFunctions, uCEFConstants;
function cef_resource_bundle_handler_get_localized_string(self : PCefResourceBundleHandler;
string_id : Integer;
string_val : PCefString): Integer; stdcall;
var
TempString : ustring;
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefResourceBundleHandlerOwn) then
begin
TempString := '';
Result := Ord(TCefResourceBundleHandlerOwn(TempObject).GetLocalizedString(string_id, TempString));
if (string_val <> nil) then
begin
CefStringFree(string_val);
string_val^ := CefStringAlloc(TempString);
end;
end;
end;
function cef_resource_bundle_handler_get_data_resource( self : PCefResourceBundleHandler;
resource_id : Integer;
var data : Pointer;
var data_size : NativeUInt): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefResourceBundleHandlerOwn) then
Result := Ord(TCefResourceBundleHandlerOwn(TempObject).GetDataResource(resource_id, data, data_size));
end;
function cef_resource_bundle_handler_get_data_resource_for_scale( self : PCefResourceBundleHandler;
resource_id : Integer;
scale_factor : TCefScaleFactor;
var data : Pointer;
var data_size : NativeUInt): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefResourceBundleHandlerOwn) then
Result := Ord(TCefResourceBundleHandlerOwn(TempObject).GetDataResourceForScale(resource_id, scale_factor, data, data_size));
end;
constructor TCefResourceBundleHandlerOwn.Create;
begin
inherited CreateData(SizeOf(TCefResourceBundleHandler));
with PCefResourceBundleHandler(FData)^ do
begin
get_localized_string := {$IFDEF FPC}@{$ENDIF}cef_resource_bundle_handler_get_localized_string;
get_data_resource := {$IFDEF FPC}@{$ENDIF}cef_resource_bundle_handler_get_data_resource;
get_data_resource_for_scale := {$IFDEF FPC}@{$ENDIF}cef_resource_bundle_handler_get_data_resource_for_scale;
end;
end;
// TCefCustomResourceBundleHandler
constructor TCefCustomResourceBundleHandler.Create(const aCefApp : TCefApplicationCore);
begin
inherited Create;
FCefApp := aCefApp;
end;
destructor TCefCustomResourceBundleHandler.Destroy;
begin
FCefApp := nil;
inherited Destroy;
end;
function TCefCustomResourceBundleHandler.GetLocalizedString( stringid : Integer;
var stringVal : ustring): Boolean;
begin
Result := False;
try
Result := (FCefApp <> nil) and FCefApp.Internal_GetLocalizedString(stringid, stringVal);
except
on e : exception do
if CustomExceptionHandler('TCefCustomResourceBundleHandler.GetLocalizedString', e) then raise;
end;
end;
function TCefCustomResourceBundleHandler.GetDataResource( resourceId : Integer;
var data : Pointer;
var dataSize : NativeUInt): Boolean;
begin
Result := False;
try
Result := (FCefApp <> nil) and FCefApp.Internal_GetDataResource(resourceId, data, dataSize);
except
on e : exception do
if CustomExceptionHandler('TCefCustomResourceBundleHandler.GetDataResource', e) then raise;
end;
end;
function TCefCustomResourceBundleHandler.GetDataResourceForScale( resourceId : Integer;
scaleFactor : TCefScaleFactor;
var data : Pointer;
var dataSize : NativeUInt): Boolean;
begin
Result := False;
try
Result := (FCefApp <> nil) and FCefApp.Internal_GetDataResourceForScale(resourceId, scaleFactor, data, dataSize);
except
on e : exception do
if CustomExceptionHandler('TCefCustomResourceBundleHandler.GetDataResourceForScale', e) then raise;
end;
end;
end.