mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-12-14 09:42:54 +02:00
133 lines
4.5 KiB
ObjectPascal
133 lines
4.5 KiB
ObjectPascal
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// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF3 to embed a chromium-based
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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// Copyright � 2017 Salvador D�az Fau. All rights reserved.
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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unit uCEFDragHandler;
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{$IFNDEF CPUX64}
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{$ALIGN ON}
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{$MINENUMSIZE 4}
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{$ENDIF}
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interface
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uses
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uCEFBase, uCEFInterfaces, uCEFTypes;
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type
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TCefDragHandlerOwn = class(TCefBaseOwn, ICefDragHandler)
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protected
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function OnDragEnter(const browser: ICefBrowser; const dragData: ICefDragData; mask: TCefDragOperations): Boolean; virtual;
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procedure OnDraggableRegionsChanged(const browser: ICefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray); virtual;
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public
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constructor Create; virtual;
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end;
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TCustomDragHandler = class(TCefDragHandlerOwn)
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protected
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FEvent: IChromiumEvents;
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function OnDragEnter(const browser: ICefBrowser; const dragData: ICefDragData; mask: TCefDragOperations): Boolean; override;
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procedure OnDraggableRegionsChanged(const browser: ICefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray); override;
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public
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constructor Create(const events: IChromiumEvents); reintroduce; virtual;
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end;
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implementation
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uses
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uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFDragData;
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function cef_drag_handler_on_drag_enter(self: PCefDragHandler; browser: PCefBrowser;
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dragData: PCefDragData; mask: TCefDragOperations): Integer; stdcall;
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begin
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with TCefDragHandlerOwn(CefGetObject(self)) do
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Result := Ord(OnDragEnter(TCefBrowserRef.UnWrap(browser), TCefDragDataRef.UnWrap(dragData), mask));
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end;
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procedure cef_drag_handler_on_draggable_regions_changed(self: PCefDragHandler;
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browser: PCefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray); stdcall;
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begin
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with TCefDragHandlerOwn(CefGetObject(self)) do
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OnDraggableRegionsChanged(TCefBrowserRef.UnWrap(browser), regionsCount, regions);
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end;
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constructor TCefDragHandlerOwn.Create;
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begin
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CreateData(SizeOf(TCefDragHandler), False);
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with PCefDragHandler(FData)^ do
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begin
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on_drag_enter := cef_drag_handler_on_drag_enter;
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on_draggable_regions_changed := cef_drag_handler_on_draggable_regions_changed;
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end;
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end;
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function TCefDragHandlerOwn.OnDragEnter(const browser: ICefBrowser;
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const dragData: ICefDragData; mask: TCefDragOperations): Boolean;
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begin
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Result := False;
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end;
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procedure TCefDragHandlerOwn.OnDraggableRegionsChanged(
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const browser: ICefBrowser; regionsCount: NativeUInt;
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regions: PCefDraggableRegionArray);
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begin
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end;
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// TCustomDragHandler
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constructor TCustomDragHandler.Create(const events: IChromiumEvents);
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begin
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inherited Create;
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FEvent := events;
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end;
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function TCustomDragHandler.OnDragEnter(const browser: ICefBrowser; const dragData: ICefDragData; mask: TCefDragOperations): Boolean;
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begin
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Result := FEvent.doOnDragEnter(browser, dragData, mask);
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end;
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procedure TCustomDragHandler.OnDraggableRegionsChanged(const browser: ICefBrowser; regionsCount: NativeUInt; regions: PCefDraggableRegionArray);
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begin
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FEvent.doOnDraggableRegionsChanged(browser, regionsCount, regions);
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end;
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end.
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