mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
427 lines
18 KiB
ObjectPascal
427 lines
18 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 © 2017 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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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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FEvent: IChromiumEvents;
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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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public
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constructor Create(const events: IChromiumEvents); 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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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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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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begin
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TempHandler := nil;
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GetAccessibilityHandler(TempHandler);
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if (TempHandler <> nil) then
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Result := TempHandler.Wrap
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else
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Result := nil;
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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; rect: PCefRect): Integer; stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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Result := Ord(GetRootScreenRect(TCefBrowserRef.UnWrap(browser), 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; rect: PCefRect): Integer; stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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Result := Ord(GetViewRect(TCefBrowserRef.UnWrap(browser), 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; viewX, viewY: Integer; screenX, screenY: PInteger): Integer; stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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Result := Ord(GetScreenPoint(TCefBrowserRef.UnWrap(browser), viewX, viewY, screenX^, 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; screen_info: PCefScreenInfo): Integer; stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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Result := Ord(GetScreenInfo(TCefBrowserRef.UnWrap(browser), screen_info^));
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end;
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procedure cef_render_handler_on_popup_show(self: PCefRenderProcessHandler;
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browser: PCefBrowser; show: Integer); stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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OnPopupShow(TCefBrowserRef.UnWrap(browser), show <> 0);
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end;
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procedure cef_render_handler_on_popup_size(self: PCefRenderProcessHandler;
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browser: PCefBrowser; const rect: PCefRect); stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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OnPopupSize(TCefBrowserRef.UnWrap(browser), rect);
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end;
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procedure cef_render_handler_on_paint(self: PCefRenderProcessHandler;
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browser: PCefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt;
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const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer); stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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OnPaint(TCefBrowserRef.UnWrap(browser), kind, dirtyRectsCount, dirtyRects,
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buffer, width, height);
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end;
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procedure cef_render_handler_on_cursor_change(self: PCefRenderProcessHandler;
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browser: PCefBrowser; cursor: TCefCursorHandle; type_: TCefCursorType;
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const custom_cursor_info: PCefCursorInfo); stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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OnCursorChange(TCefBrowserRef.UnWrap(browser), cursor, type_, custom_cursor_info);
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end;
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function cef_render_handler_start_dragging(self: PCefRenderProcessHandler; browser: PCefBrowser;
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drag_data: PCefDragData; allowed_ops: TCefDragOperations; x, y: Integer): Integer; stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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Result := Ord(OnStartDragging(TCefBrowserRef.UnWrap(browser),
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TCefDragDataRef.UnWrap(drag_data), allowed_ops, x, y));
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end;
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procedure cef_render_handler_update_drag_cursor(self: PCefRenderProcessHandler;
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browser: PCefBrowser; operation: TCefDragOperation); stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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OnUpdateDragCursor(TCefBrowserRef.UnWrap(browser), operation);
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end;
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procedure cef_render_handler_on_scroll_offset_changed(self: PCefRenderProcessHandler;
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browser: PCefBrowser; x, y: Double); stdcall;
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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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OnScrollOffsetChanged(TCefBrowserRef.UnWrap(browser), x, y);
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end;
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procedure cef_render_handler_on_ime_composition_range_changed(self: PCefRenderProcessHandler;
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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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begin
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with TCefRenderHandlerOwn(CefGetObject(self)) do
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OnIMECompositionRangeChanged(TCefBrowserRef.UnWrap(browser), selected_range, character_boundsCount, character_bounds);
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end;
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constructor TCefRenderHandlerOwn.Create;
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begin
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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,
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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;
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cursor: TCefCursorHandle; CursorType: TCefCursorType;
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const customCursorInfo: PCefCursorInfo);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnPaint(const browser: ICefBrowser;
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kind: TCefPaintElementType; dirtyRectsCount: NativeUInt;
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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;
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show: Boolean);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnPopupSize(const browser: ICefBrowser;
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const rect: PCefRect);
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begin
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end;
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procedure TCefRenderHandlerOwn.OnScrollOffsetChanged(
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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;
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const dragData: ICefDragData; allowedOps: TCefDragOperations; x,
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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;
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operation: TCefDragOperation);
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begin
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end;
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// TCustomRenderHandler
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constructor TCustomRenderHandler.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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destructor TCustomRenderHandler.Destroy;
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begin
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FEvent := nil;
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inherited Destroy;
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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 (FEvent <> nil) then FEvent.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 (FEvent <> nil) then
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Result := FEvent.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 (FEvent <> nil) then
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Result := FEvent.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 (FEvent <> nil) then
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Result := FEvent.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 (FEvent <> nil) then
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Result := FEvent.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 (FEvent <> nil) then
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FEvent.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 (FEvent <> nil) then
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FEvent.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 (FEvent <> nil) then FEvent.doOnPopupShow(browser, show);
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end;
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procedure TCustomRenderHandler.OnPopupSize(const browser: ICefBrowser; const rect: PCefRect);
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begin
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if (FEvent <> nil) then FEvent.doOnPopupSize(browser, rect);
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end;
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procedure TCustomRenderHandler.OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double);
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begin
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if (FEvent <> nil) then FEvent.doOnScrollOffsetChanged(browser, x, y);
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end;
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procedure TCustomRenderHandler.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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if (FEvent <> nil) then
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FEvent.doOnIMECompositionRangeChanged(browser, selected_range, character_boundsCount, character_bounds);
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end;
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function TCustomRenderHandler.OnStartDragging(const browser : ICefBrowser;
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const dragData : ICefDragData;
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allowedOps : TCefDragOperations;
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x : Integer;
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y : Integer): Boolean;
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begin
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if (FEvent <> nil) then
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Result := FEvent.doOnStartDragging(browser, dragData, allowedOps, x, y)
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else
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Result := inherited OnStartDragging(browser, dragData, allowedOps, x, y);
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end;
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procedure TCustomRenderHandler.OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation);
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begin
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if (FEvent <> nil) then FEvent.doOnUpdateDragCursor(browser, operation);
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end;
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end.
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