mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
531 lines
23 KiB
ObjectPascal
531 lines
23 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 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 © 2018 Salvador Díaz 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 uCEFRenderHandler;
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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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{$I cef.inc}
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interface
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uses
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
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TCefRenderHandlerOwn = class(TCefBaseRefCountedOwn, ICefRenderHandler)
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protected
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procedure GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler); virtual;
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function GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean; virtual;
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function GetViewRect(const browser: ICefBrowser; var rect: TCefRect): Boolean; virtual;
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function GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean; virtual;
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function GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean; virtual;
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procedure OnPopupShow(const browser: ICefBrowser; show: Boolean); virtual;
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procedure OnPopupSize(const browser: ICefBrowser; const rect: PCefRect); virtual;
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procedure OnPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer); virtual;
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procedure OnCursorChange(const browser: ICefBrowser; cursor: TCefCursorHandle; CursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo); virtual;
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function OnStartDragging(const browser: ICefBrowser; const dragData: ICefDragData; allowedOps: TCefDragOperations; x, y: Integer): Boolean; virtual;
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procedure OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation); virtual;
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procedure OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double); virtual;
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procedure OnIMECompositionRangeChanged(const browser: ICefBrowser; const selected_range: PCefRange; character_boundsCount: NativeUInt; const character_bounds: PCefRect); virtual;
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procedure RemoveReferences; virtual;
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public
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constructor Create; virtual;
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end;
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TCustomRenderHandler = class(TCefRenderHandlerOwn)
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protected
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FEvents : Pointer;
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procedure GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler); override;
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function GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean; override;
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function GetViewRect(const browser: ICefBrowser; var rect: TCefRect): Boolean; override;
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function GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean; override;
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procedure OnPopupShow(const browser: ICefBrowser; show: Boolean); override;
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procedure OnPopupSize(const browser: ICefBrowser; const rect: PCefRect); override;
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procedure OnPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer); override;
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procedure OnCursorChange(const browser: ICefBrowser; cursor: TCefCursorHandle; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo); override;
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function GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean; override;
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function OnStartDragging(const browser: ICefBrowser; const dragData: ICefDragData; allowedOps: TCefDragOperations; x, y: Integer): Boolean; override;
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procedure OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation); override;
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procedure OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double); override;
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procedure OnIMECompositionRangeChanged(const browser: ICefBrowser; const selected_range: PCefRange; character_boundsCount: NativeUInt; const character_bounds: PCefRect); override;
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procedure RemoveReferences; override;
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public
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constructor Create(const events: Pointer); reintroduce; virtual;
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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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{$IFDEF DELPHI16_UP}
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System.SysUtils,
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{$ELSE}
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SysUtils,
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{$ENDIF}
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uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFDragData;
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function cef_render_handler_get_accessibility_handler(self: PCefRenderHandler): PCefAccessibilityHandler; stdcall;
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var
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TempHandler : ICefAccessibilityHandler;
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TempObject : TObject;
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begin
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Result := nil;
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TempHandler := nil;
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
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begin
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TCefRenderHandlerOwn(TempObject).GetAccessibilityHandler(TempHandler);
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if (TempHandler <> nil) then Result := TempHandler.Wrap;
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end;
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end;
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function cef_render_handler_get_root_screen_rect(self : PCefRenderHandler;
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browser : PCefBrowser;
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rect : PCefRect): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
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Result := Ord(TCefRenderHandlerOwn(TempObject).GetRootScreenRect(TCefBrowserRef.UnWrap(browser),
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rect^));
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end;
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function cef_render_handler_get_view_rect(self : PCefRenderHandler;
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browser : PCefBrowser;
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rect : PCefRect): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
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Result := Ord(TCefRenderHandlerOwn(TempObject).GetViewRect(TCefBrowserRef.UnWrap(browser),
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rect^));
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end;
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function cef_render_handler_get_screen_point(self : PCefRenderHandler;
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browser : PCefBrowser;
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viewX, viewY : Integer;
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screenX, screenY : PInteger): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
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Result := Ord(TCefRenderHandlerOwn(TempObject).GetScreenPoint(TCefBrowserRef.UnWrap(browser),
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viewX,
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viewY,
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screenX^,
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screenY^));
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end;
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function cef_render_handler_get_screen_info(self : PCefRenderHandler;
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browser : PCefBrowser;
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screen_info : PCefScreenInfo): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
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Result := Ord(TCefRenderHandlerOwn(TempObject).GetScreenInfo(TCefBrowserRef.UnWrap(browser),
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screen_info^));
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end;
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procedure cef_render_handler_on_popup_show(self : PCefRenderHandler;
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browser : PCefBrowser;
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show : Integer); 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 TCefRenderHandlerOwn) then
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TCefRenderHandlerOwn(TempObject).OnPopupShow(TCefBrowserRef.UnWrap(browser),
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show <> 0);
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end;
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procedure cef_render_handler_on_popup_size( self : PCefRenderHandler;
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browser : PCefBrowser;
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const rect : PCefRect); 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 TCefRenderHandlerOwn) then
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TCefRenderHandlerOwn(TempObject).OnPopupSize(TCefBrowserRef.UnWrap(browser),
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rect);
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end;
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procedure cef_render_handler_on_paint( self : PCefRenderHandler;
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browser : PCefBrowser;
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kind : TCefPaintElementType;
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dirtyRectsCount : NativeUInt;
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const dirtyRects : PCefRectArray;
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const buffer : Pointer;
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width : Integer;
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height : Integer); 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 TCefRenderHandlerOwn) then
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TCefRenderHandlerOwn(TempObject).OnPaint(TCefBrowserRef.UnWrap(browser),
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kind,
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dirtyRectsCount,
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dirtyRects,
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buffer,
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width,
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height);
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end;
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procedure cef_render_handler_on_cursor_change( self : PCefRenderHandler;
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browser : PCefBrowser;
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cursor : TCefCursorHandle;
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type_ : TCefCursorType;
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const custom_cursor_info : PCefCursorInfo); 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 TCefRenderHandlerOwn) then
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TCefRenderHandlerOwn(TempObject).OnCursorChange(TCefBrowserRef.UnWrap(browser),
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cursor,
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type_,
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custom_cursor_info);
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end;
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function cef_render_handler_start_dragging(self : PCefRenderHandler;
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browser : PCefBrowser;
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drag_data : PCefDragData;
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allowed_ops : TCefDragOperations;
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x : Integer;
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y : Integer): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
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Result := Ord(TCefRenderHandlerOwn(TempObject).OnStartDragging(TCefBrowserRef.UnWrap(browser),
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TCefDragDataRef.UnWrap(drag_data),
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allowed_ops,
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x,
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y));
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end;
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procedure cef_render_handler_update_drag_cursor(self : PCefRenderHandler;
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browser : PCefBrowser;
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operation : TCefDragOperation); 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 TCefRenderHandlerOwn) then
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TCefRenderHandlerOwn(TempObject).OnUpdateDragCursor(TCefBrowserRef.UnWrap(browser), operation);
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end;
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procedure cef_render_handler_on_scroll_offset_changed(self : PCefRenderHandler;
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browser : PCefBrowser;
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x : Double;
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y : Double); 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 TCefRenderHandlerOwn) then
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TCefRenderHandlerOwn(TempObject).OnScrollOffsetChanged(TCefBrowserRef.UnWrap(browser),
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x,
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y);
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end;
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procedure cef_render_handler_on_ime_composition_range_changed( self : PCefRenderHandler;
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browser : PCefBrowser;
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const selected_range : PCefRange;
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character_boundsCount : NativeUInt;
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const character_bounds : PCefRect); 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 TCefRenderHandlerOwn) then
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TCefRenderHandlerOwn(TempObject).OnIMECompositionRangeChanged(TCefBrowserRef.UnWrap(browser),
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selected_range,
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character_boundsCount,
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character_bounds);
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end;
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constructor TCefRenderHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefRenderHandler));
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with PCefRenderHandler(FData)^ do
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begin
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get_accessibility_handler := cef_render_handler_get_accessibility_handler;
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get_root_screen_rect := cef_render_handler_get_root_screen_rect;
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get_view_rect := cef_render_handler_get_view_rect;
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get_screen_point := cef_render_handler_get_screen_point;
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get_screen_info := cef_render_handler_get_screen_info;
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on_popup_show := cef_render_handler_on_popup_show;
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on_popup_size := cef_render_handler_on_popup_size;
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on_paint := cef_render_handler_on_paint;
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on_cursor_change := cef_render_handler_on_cursor_change;
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start_dragging := cef_render_handler_start_dragging;
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update_drag_cursor := cef_render_handler_update_drag_cursor;
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on_scroll_offset_changed := cef_render_handler_on_scroll_offset_changed;
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on_ime_composition_range_changed := cef_render_handler_on_ime_composition_range_changed;
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end;
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end;
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procedure TCefRenderHandlerOwn.GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler);
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begin
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aAccessibilityHandler := nil;
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end;
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function TCefRenderHandlerOwn.GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean;
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begin
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Result := False;
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end;
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function TCefRenderHandlerOwn.GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean;
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begin
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Result := False;
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end;
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function TCefRenderHandlerOwn.GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean;
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begin
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Result := False;
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end;
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function TCefRenderHandlerOwn.GetViewRect(const browser: ICefBrowser; var rect: TCefRect): Boolean;
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begin
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Result := False;
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end;
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procedure TCefRenderHandlerOwn.OnCursorChange(const browser: ICefBrowser; cursor: TCefCursorHandle; CursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnPopupShow(const browser: ICefBrowser; show: Boolean);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnPopupSize(const browser: ICefBrowser; const rect: PCefRect);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnIMECompositionRangeChanged(const browser : ICefBrowser;
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const selected_range : PCefRange;
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character_boundsCount : NativeUInt;
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const character_bounds : PCefRect);
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begin
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end;
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function TCefRenderHandlerOwn.OnStartDragging(const browser: ICefBrowser; const dragData: ICefDragData; allowedOps: TCefDragOperations; x, y: Integer): Boolean;
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begin
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Result := False;
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end;
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procedure TCefRenderHandlerOwn.OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation);
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begin
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end;
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procedure TCefRenderHandlerOwn.RemoveReferences;
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begin
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//
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end;
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// TCustomRenderHandler
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constructor TCustomRenderHandler.Create(const events: Pointer);
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begin
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inherited Create;
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FEvents := events;
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end;
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destructor TCustomRenderHandler.Destroy;
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begin
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RemoveReferences;
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inherited Destroy;
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end;
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procedure TCustomRenderHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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procedure TCustomRenderHandler.GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnGetAccessibilityHandler(aAccessibilityHandler);
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end;
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function TCustomRenderHandler.GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnGetRootScreenRect(browser, rect)
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else
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Result := inherited GetRootScreenRect(browser, rect);
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end;
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function TCustomRenderHandler.GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnGetScreenInfo(browser, screenInfo)
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else
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Result := inherited GetScreenInfo(browser, screenInfo);
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end;
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function TCustomRenderHandler.GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnGetScreenPoint(browser, viewX, viewY, screenX, screenY)
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else
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Result := inherited GetScreenPoint(browser, viewX, viewY, screenX, screenY);
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end;
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function TCustomRenderHandler.GetViewRect(const browser: ICefBrowser; var rect: TCefRect): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnGetViewRect(browser, rect)
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else
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Result := inherited GetViewRect(browser, rect);
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end;
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procedure TCustomRenderHandler.OnCursorChange(const browser : ICefBrowser;
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cursor : TCefCursorHandle;
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cursorType : TCefCursorType;
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const customCursorInfo : PCefCursorInfo);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnCursorChange(browser, cursor, cursorType, customCursorInfo);
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end;
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procedure TCustomRenderHandler.OnPaint(const browser : ICefBrowser;
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kind : TCefPaintElementType;
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dirtyRectsCount : NativeUInt;
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const dirtyRects : PCefRectArray;
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const buffer : Pointer;
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width : Integer;
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height : Integer);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnPaint(browser, kind, dirtyRectsCount, dirtyRects, buffer, width, height);
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end;
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procedure TCustomRenderHandler.OnPopupShow(const browser: ICefBrowser; show: Boolean);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnPopupShow(browser, show);
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|
end;
|
|
|
|
procedure TCustomRenderHandler.OnPopupSize(const browser: ICefBrowser; const rect: PCefRect);
|
|
begin
|
|
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnPopupSize(browser, rect);
|
|
end;
|
|
|
|
procedure TCustomRenderHandler.OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double);
|
|
begin
|
|
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnScrollOffsetChanged(browser, x, y);
|
|
end;
|
|
|
|
procedure TCustomRenderHandler.OnIMECompositionRangeChanged(const browser : ICefBrowser;
|
|
const selected_range : PCefRange;
|
|
character_boundsCount : NativeUInt;
|
|
const character_bounds : PCefRect);
|
|
begin
|
|
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnIMECompositionRangeChanged(browser, selected_range, character_boundsCount, character_bounds);
|
|
end;
|
|
|
|
function TCustomRenderHandler.OnStartDragging(const browser : ICefBrowser;
|
|
const dragData : ICefDragData;
|
|
allowedOps : TCefDragOperations;
|
|
x : Integer;
|
|
y : Integer): Boolean;
|
|
begin
|
|
if (FEvents <> nil) then
|
|
Result := IChromiumEvents(FEvents).doOnStartDragging(browser, dragData, allowedOps, x, y)
|
|
else
|
|
Result := inherited OnStartDragging(browser, dragData, allowedOps, x, y);
|
|
end;
|
|
|
|
procedure TCustomRenderHandler.OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation);
|
|
begin
|
|
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnUpdateDragCursor(browser, operation);
|
|
end;
|
|
|
|
end.
|