mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-15 15:55:56 +01:00
465 lines
16 KiB
ObjectPascal
465 lines
16 KiB
ObjectPascal
// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF 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 © 2021 Salvador Diaz 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 uCEFViewDelegate;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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{$I cef.inc}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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System.Classes, System.SysUtils,
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{$ELSE}
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Classes, SysUtils,
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{$ENDIF}
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
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TCefViewDelegateRef = class(TCefBaseRefCountedRef, ICefViewDelegate)
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protected
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procedure OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
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procedure OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
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procedure OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
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procedure OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
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procedure OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
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procedure OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
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procedure OnFocus(const view: ICefView);
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procedure OnBlur(const view: ICefView);
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public
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class function UnWrap(data: Pointer): ICefViewDelegate;
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end;
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TCefViewDelegateOwn = class(TCefBaseRefCountedOwn, ICefViewDelegate)
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protected
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procedure OnGetPreferredSize(const view: ICefView; var aResult : TCefSize); virtual;
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procedure OnGetMinimumSize(const view: ICefView; var aResult : TCefSize); virtual;
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procedure OnGetMaximumSize(const view: ICefView; var aResult : TCefSize); virtual;
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procedure OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer); virtual;
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procedure OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView); virtual;
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procedure OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView); virtual;
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procedure OnFocus(const view: ICefView); virtual;
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procedure OnBlur(const view: ICefView); virtual;
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procedure InitializeCEFMethods; virtual;
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public
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constructor Create; virtual;
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end;
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TCustomViewDelegate = class(TCefViewDelegateOwn)
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protected
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FEvents : Pointer;
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procedure OnGetPreferredSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetMinimumSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetMaximumSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer); override;
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procedure OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView); override;
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procedure OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView); override;
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procedure OnFocus(const view: ICefView); override;
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procedure OnBlur(const view: ICefView); override;
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public
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constructor Create(const events: ICefViewDelegateEvents); reintroduce;
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destructor Destroy; override;
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end;
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implementation
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uses
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uCEFLibFunctions, uCEFMiscFunctions, uCEFView;
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// **************************************************************
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// ******************** TCefViewDelegateRef *********************
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// **************************************************************
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procedure TCefViewDelegateRef.OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
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begin
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aResult := PCefViewDelegate(FData)^.get_preferred_size(PCefViewDelegate(FData),
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CefGetData(view));
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end;
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procedure TCefViewDelegateRef.OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
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begin
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aResult := PCefViewDelegate(FData)^.get_minimum_size(PCefViewDelegate(FData),
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CefGetData(view));
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end;
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procedure TCefViewDelegateRef.OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
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begin
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aResult := PCefViewDelegate(FData)^.get_maximum_size(PCefViewDelegate(FData),
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CefGetData(view));
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end;
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procedure TCefViewDelegateRef.OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
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begin
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aResult := PCefViewDelegate(FData)^.get_height_for_width(PCefViewDelegate(FData),
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CefGetData(view),
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width);
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end;
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procedure TCefViewDelegateRef.OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
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begin
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PCefViewDelegate(FData)^.on_parent_view_changed(PCefViewDelegate(FData),
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CefGetData(view),
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ord(added),
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CefGetData(parent));
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end;
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procedure TCefViewDelegateRef.OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
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begin
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PCefViewDelegate(FData)^.on_child_view_changed(PCefViewDelegate(FData),
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CefGetData(view),
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ord(added),
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CefGetData(child));
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end;
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procedure TCefViewDelegateRef.OnFocus(const view: ICefView);
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begin
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PCefViewDelegate(FData)^.on_focus(PCefViewDelegate(FData),
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CefGetData(view));
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end;
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procedure TCefViewDelegateRef.OnBlur(const view: ICefView);
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begin
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PCefViewDelegate(FData)^.on_blur(PCefViewDelegate(FData),
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CefGetData(view));
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end;
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class function TCefViewDelegateRef.UnWrap(data: Pointer): ICefViewDelegate;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefViewDelegate
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else
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Result := nil;
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end;
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// **************************************************************
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// ******************** TCefViewDelegateOwn *********************
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// **************************************************************
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function cef_view_delegate_get_preferred_size(self: PCefViewDelegate; view: PCefView): TCefSize; stdcall;
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var
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TempObject : TObject;
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TempSize : TCefSize;
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begin
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TempObject := CefGetObject(self);
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TempSize.width := 100;
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TempSize.height := 100;
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnGetPreferredSize(TCefViewRef.UnWrap(view),
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TempSize);
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Result := TempSize;
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end;
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function cef_view_delegate_get_minimum_size(self: PCefViewDelegate; view: PCefView): TCefSize; stdcall;
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var
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TempObject : TObject;
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TempSize : TCefSize;
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begin
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TempObject := CefGetObject(self);
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TempSize.width := 0;
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TempSize.height := 0;
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnGetMinimumSize(TCefViewRef.UnWrap(view),
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TempSize);
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Result := TempSize;
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end;
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function cef_view_delegate_get_maximum_size(self: PCefViewDelegate; view: PCefView): TCefSize; stdcall;
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var
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TempObject : TObject;
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TempSize : TCefSize;
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begin
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TempObject := CefGetObject(self);
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TempSize.width := 0;
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TempSize.height := 0;
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnGetMaximumSize(TCefViewRef.UnWrap(view),
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TempSize);
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Result := TempSize;
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end;
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function cef_view_delegate_get_height_for_width(self: PCefViewDelegate; view: PCefView; width: Integer): Integer; stdcall;
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var
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TempObject : TObject;
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TempHeight : integer;
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begin
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TempObject := CefGetObject(self);
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TempHeight := 0;
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnGetHeightForWidth(TCefViewRef.UnWrap(view),
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width,
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TempHeight);
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Result := TempHeight;
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end;
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procedure cef_view_delegate_on_parent_view_changed(self: PCefViewDelegate; view: PCefView; added: Integer; parent: PCefView); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnParentViewChanged(TCefViewRef.UnWrap(view),
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added <> 0,
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TCefViewRef.UnWrap(parent));
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end;
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procedure cef_view_delegate_on_child_view_changed(self: PCefViewDelegate; view: PCefView; added: Integer; child: PCefView); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnChildViewChanged(TCefViewRef.UnWrap(view),
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added <> 0,
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TCefViewRef.UnWrap(child));
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end;
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procedure cef_view_delegate_on_focus(self: PCefViewDelegate; view: PCefView); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnFocus(TCefViewRef.UnWrap(view));
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end;
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procedure cef_view_delegate_on_blur(self: PCefViewDelegate; view: PCefView); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefViewDelegateOwn) then
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TCefViewDelegateOwn(TempObject).OnBlur(TCefViewRef.UnWrap(view));
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end;
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constructor TCefViewDelegateOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefViewDelegate));
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InitializeCEFMethods;
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end;
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procedure TCefViewDelegateOwn.InitializeCEFMethods;
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begin
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with PCefViewDelegate(FData)^ do
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begin
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get_preferred_size := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_get_preferred_size;
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get_minimum_size := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_get_minimum_size;
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get_maximum_size := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_get_maximum_size;
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get_height_for_width := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_get_height_for_width;
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on_parent_view_changed := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_on_parent_view_changed;
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on_child_view_changed := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_on_child_view_changed;
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on_focus := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_on_focus;
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on_blur := {$IFDEF FPC}@{$ENDIF}cef_view_delegate_on_blur;
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end;
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end;
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procedure TCefViewDelegateOwn.OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
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begin
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//
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end;
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procedure TCefViewDelegateOwn.OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
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begin
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//
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end;
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procedure TCefViewDelegateOwn.OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
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begin
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//
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end;
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procedure TCefViewDelegateOwn.OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
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begin
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//
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end;
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procedure TCefViewDelegateOwn.OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
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begin
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//
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end;
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procedure TCefViewDelegateOwn.OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
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begin
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//
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end;
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procedure TCefViewDelegateOwn.OnFocus(const view: ICefView);
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begin
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//
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end;
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procedure TCefViewDelegateOwn.OnBlur(const view: ICefView);
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begin
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//
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end;
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// **************************************************************
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// ******************** TCustomViewDelegate *********************
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// **************************************************************
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constructor TCustomViewDelegate.Create(const events: ICefViewDelegateEvents);
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begin
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inherited Create;
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FEvents := Pointer(events);
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end;
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destructor TCustomViewDelegate.Destroy;
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begin
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FEvents := nil;
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inherited Destroy;
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end;
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procedure TCustomViewDelegate.OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnGetPreferredSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnGetPreferredSize', e) then raise;
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end;
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end;
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procedure TCustomViewDelegate.OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnGetMinimumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnGetMinimumSize', e) then raise;
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end;
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end;
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procedure TCustomViewDelegate.OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnGetMaximumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnGetMaximumSize', e) then raise;
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end;
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end;
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procedure TCustomViewDelegate.OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnGetHeightForWidth(view, width, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnGetHeightForWidth', e) then raise;
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end;
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end;
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procedure TCustomViewDelegate.OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnParentViewChanged(view, added, parent);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnParentViewChanged', e) then raise;
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end;
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end;
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procedure TCustomViewDelegate.OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnChildViewChanged(view, added, child);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnChildViewChanged', e) then raise;
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end;
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end;
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procedure TCustomViewDelegate.OnFocus(const view: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnFocus(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnFocus', e) then raise;
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end;
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end;
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procedure TCustomViewDelegate.OnBlur(const view: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefViewDelegateEvents(FEvents).doOnBlur(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomViewDelegate.OnBlur', e) then raise;
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end;
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end;
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end.
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