mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-15 15:55:56 +01:00
135 lines
4.5 KiB
ObjectPascal
135 lines
4.5 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 uCEFDragHandler;
|
|
|
|
{$IFNDEF CPUX64}
|
|
{$ALIGN ON}
|
|
{$MINENUMSIZE 4}
|
|
{$ENDIF}
|
|
|
|
{$I cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
|
|
|
|
type
|
|
TCefDragHandlerOwn = class(TCefBaseRefCountedOwn, ICefDragHandler)
|
|
protected
|
|
function OnDragEnter(const browser: ICefBrowser; const dragData: ICefDragData; mask: TCefDragOperations): Boolean; virtual;
|
|
procedure OnDraggableRegionsChanged(const browser: ICefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray); virtual;
|
|
|
|
public
|
|
constructor Create; virtual;
|
|
end;
|
|
|
|
TCustomDragHandler = class(TCefDragHandlerOwn)
|
|
protected
|
|
FEvent: IChromiumEvents;
|
|
|
|
function OnDragEnter(const browser: ICefBrowser; const dragData: ICefDragData; mask: TCefDragOperations): Boolean; override;
|
|
procedure OnDraggableRegionsChanged(const browser: ICefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray); override;
|
|
|
|
public
|
|
constructor Create(const events: IChromiumEvents); reintroduce; virtual;
|
|
end;
|
|
|
|
implementation
|
|
|
|
uses
|
|
uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFDragData;
|
|
|
|
function cef_drag_handler_on_drag_enter(self: PCefDragHandler; browser: PCefBrowser;
|
|
dragData: PCefDragData; mask: TCefDragOperations): Integer; stdcall;
|
|
begin
|
|
with TCefDragHandlerOwn(CefGetObject(self)) do
|
|
Result := Ord(OnDragEnter(TCefBrowserRef.UnWrap(browser), TCefDragDataRef.UnWrap(dragData), mask));
|
|
end;
|
|
|
|
procedure cef_drag_handler_on_draggable_regions_changed(self: PCefDragHandler;
|
|
browser: PCefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray); stdcall;
|
|
begin
|
|
with TCefDragHandlerOwn(CefGetObject(self)) do
|
|
OnDraggableRegionsChanged(TCefBrowserRef.UnWrap(browser), regionsCount, regions);
|
|
end;
|
|
|
|
constructor TCefDragHandlerOwn.Create;
|
|
begin
|
|
CreateData(SizeOf(TCefDragHandler), False);
|
|
with PCefDragHandler(FData)^ do
|
|
begin
|
|
on_drag_enter := cef_drag_handler_on_drag_enter;
|
|
on_draggable_regions_changed := cef_drag_handler_on_draggable_regions_changed;
|
|
end;
|
|
end;
|
|
|
|
function TCefDragHandlerOwn.OnDragEnter(const browser: ICefBrowser;
|
|
const dragData: ICefDragData; mask: TCefDragOperations): Boolean;
|
|
begin
|
|
Result := False;
|
|
end;
|
|
|
|
procedure TCefDragHandlerOwn.OnDraggableRegionsChanged(
|
|
const browser: ICefBrowser; regionsCount: NativeUInt;
|
|
regions: PCefDraggableRegionArray);
|
|
begin
|
|
|
|
end;
|
|
|
|
// TCustomDragHandler
|
|
|
|
constructor TCustomDragHandler.Create(const events: IChromiumEvents);
|
|
begin
|
|
inherited Create;
|
|
|
|
FEvent := events;
|
|
end;
|
|
|
|
function TCustomDragHandler.OnDragEnter(const browser: ICefBrowser; const dragData: ICefDragData; mask: TCefDragOperations): Boolean;
|
|
begin
|
|
Result := FEvent.doOnDragEnter(browser, dragData, mask);
|
|
end;
|
|
|
|
procedure TCustomDragHandler.OnDraggableRegionsChanged(const browser: ICefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray);
|
|
begin
|
|
FEvent.doOnDraggableRegionsChanged(browser, regionsCount, regions);
|
|
end;
|
|
|
|
end.
|