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mirror of https://github.com/salvadordf/CEF4Delphi.git synced 2024-12-04 09:26:52 +02:00
CEF4Delphi/source/uCEFRenderHandler.pas
Salvador Díaz Fau fd1e936198 Update to CEF 79.0.10
- Removed CEFSentinel from some demos because it's no longer necessary.
- Updated copyright year.
2020-01-01 12:48:10 +01:00

632 lines
29 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
// https://www.briskbard.com/index.php?lang=en&pageid=cef
//
// Copyright © 2020 Salvador Diaz Fau. All rights reserved.
//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
* Delphi Chromium Embedded 3
*
* Usage allowed under the restrictions of the Lesser GNU General Public License
* or alternatively the restrictions of the Mozilla Public License 1.1
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
* Web site : http://www.progdigy.com
* Repository : http://code.google.com/p/delphichromiumembedded/
* Group : http://groups.google.com/group/delphichromiumembedded
*
* Embarcadero Technologies, Inc is not permitted to use or redistribute
* this source code without explicit permission.
*
*)
unit uCEFRenderHandler;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
type
TCefRenderHandlerOwn = class(TCefBaseRefCountedOwn, ICefRenderHandler)
protected
procedure GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler); virtual;
function GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean; virtual;
procedure GetViewRect(const browser: ICefBrowser; var rect: TCefRect); virtual;
function GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean; virtual;
function GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean; virtual;
procedure OnPopupShow(const browser: ICefBrowser; show: Boolean); virtual;
procedure OnPopupSize(const browser: ICefBrowser; const rect: PCefRect); virtual;
procedure OnPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer); virtual;
procedure OnAcceleratedPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; shared_handle: Pointer); virtual;
procedure OnCursorChange(const browser: ICefBrowser; cursor: TCefCursorHandle; CursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo); virtual;
function OnStartDragging(const browser: ICefBrowser; const dragData: ICefDragData; allowedOps: TCefDragOperations; x, y: Integer): Boolean; virtual;
procedure OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation); virtual;
procedure OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double); virtual;
procedure OnIMECompositionRangeChanged(const browser: ICefBrowser; const selected_range: PCefRange; character_boundsCount: NativeUInt; const character_bounds: PCefRect); virtual;
procedure OnTextSelectionChanged(const browser: ICefBrowser; const selected_text: ustring; const selected_range: PCefRange); virtual;
procedure OnVirtualKeyboardRequested(const browser: ICefBrowser; input_mode: TCefTextInpuMode); virtual;
procedure RemoveReferences; virtual;
public
constructor Create; virtual;
end;
TCustomRenderHandler = class(TCefRenderHandlerOwn)
protected
FEvents : Pointer;
procedure GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler); override;
function GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean; override;
procedure GetViewRect(const browser: ICefBrowser; var rect: TCefRect); override;
function GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean; override;
procedure OnPopupShow(const browser: ICefBrowser; show: Boolean); override;
procedure OnPopupSize(const browser: ICefBrowser; const rect: PCefRect); override;
procedure OnPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer); override;
procedure OnAcceleratedPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; shared_handle: Pointer); override;
procedure OnCursorChange(const browser: ICefBrowser; cursor: TCefCursorHandle; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo); override;
function GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean; override;
function OnStartDragging(const browser: ICefBrowser; const dragData: ICefDragData; allowedOps: TCefDragOperations; x, y: Integer): Boolean; override;
procedure OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation); override;
procedure OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double); override;
procedure OnIMECompositionRangeChanged(const browser: ICefBrowser; const selected_range: PCefRange; character_boundsCount: NativeUInt; const character_bounds: PCefRect); override;
procedure OnTextSelectionChanged(const browser: ICefBrowser; const selected_text: ustring; const selected_range: PCefRange); override;
procedure OnVirtualKeyboardRequested(const browser: ICefBrowser; input_mode: TCefTextInpuMode); override;
procedure RemoveReferences; override;
public
constructor Create(const events : IChromiumEvents); reintroduce; virtual;
destructor Destroy; override;
end;
implementation
uses
{$IFDEF DELPHI16_UP}
System.SysUtils,
{$ELSE}
SysUtils,
{$ENDIF}
uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFDragData;
function cef_render_handler_get_accessibility_handler(self: PCefRenderHandler): PCefAccessibilityHandler; stdcall;
var
TempHandler : ICefAccessibilityHandler;
TempObject : TObject;
begin
Result := nil;
TempHandler := nil;
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
begin
TCefRenderHandlerOwn(TempObject).GetAccessibilityHandler(TempHandler);
if (TempHandler <> nil) then Result := TempHandler.Wrap;
end;
end;
function cef_render_handler_get_root_screen_rect(self : PCefRenderHandler;
browser : PCefBrowser;
rect : PCefRect): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
Result := Ord(TCefRenderHandlerOwn(TempObject).GetRootScreenRect(TCefBrowserRef.UnWrap(browser),
rect^));
end;
procedure cef_render_handler_get_view_rect(self : PCefRenderHandler;
browser : PCefBrowser;
rect : PCefRect); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).GetViewRect(TCefBrowserRef.UnWrap(browser),
rect^);
// CEF needs a rect with valid height and width
if (rect^.width <= 0) then rect^.width := 800;
if (rect^.height <= 0) then rect^.height := 600;
end;
function cef_render_handler_get_screen_point(self : PCefRenderHandler;
browser : PCefBrowser;
viewX, viewY : Integer;
screenX, screenY : PInteger): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
Result := Ord(TCefRenderHandlerOwn(TempObject).GetScreenPoint(TCefBrowserRef.UnWrap(browser),
viewX,
viewY,
screenX^,
screenY^));
end;
function cef_render_handler_get_screen_info(self : PCefRenderHandler;
browser : PCefBrowser;
screen_info : PCefScreenInfo): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
Result := Ord(TCefRenderHandlerOwn(TempObject).GetScreenInfo(TCefBrowserRef.UnWrap(browser),
screen_info^));
end;
procedure cef_render_handler_on_popup_show(self : PCefRenderHandler;
browser : PCefBrowser;
show : Integer); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnPopupShow(TCefBrowserRef.UnWrap(browser),
show <> 0);
end;
procedure cef_render_handler_on_popup_size( self : PCefRenderHandler;
browser : PCefBrowser;
const rect : PCefRect); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnPopupSize(TCefBrowserRef.UnWrap(browser),
rect);
end;
procedure cef_render_handler_on_paint( self : PCefRenderHandler;
browser : PCefBrowser;
kind : TCefPaintElementType;
dirtyRectsCount : NativeUInt;
const dirtyRects : PCefRectArray;
const buffer : Pointer;
width : Integer;
height : Integer); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnPaint(TCefBrowserRef.UnWrap(browser),
kind,
dirtyRectsCount,
dirtyRects,
buffer,
width,
height);
end;
procedure cef_render_handler_on_accelerated_paint( self : PCefRenderHandler;
browser : PCefBrowser;
kind : TCefPaintElementType;
dirtyRectsCount : NativeUInt;
const dirtyRects : PCefRectArray;
shared_handle : Pointer); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnAcceleratedPaint(TCefBrowserRef.UnWrap(browser),
kind,
dirtyRectsCount,
dirtyRects,
shared_handle);
end;
procedure cef_render_handler_on_cursor_change( self : PCefRenderHandler;
browser : PCefBrowser;
cursor : TCefCursorHandle;
type_ : TCefCursorType;
const custom_cursor_info : PCefCursorInfo); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnCursorChange(TCefBrowserRef.UnWrap(browser),
cursor,
type_,
custom_cursor_info);
end;
function cef_render_handler_start_dragging(self : PCefRenderHandler;
browser : PCefBrowser;
drag_data : PCefDragData;
allowed_ops : TCefDragOperations;
x : Integer;
y : Integer): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
Result := Ord(TCefRenderHandlerOwn(TempObject).OnStartDragging(TCefBrowserRef.UnWrap(browser),
TCefDragDataRef.UnWrap(drag_data),
allowed_ops,
x,
y));
end;
procedure cef_render_handler_update_drag_cursor(self : PCefRenderHandler;
browser : PCefBrowser;
operation : TCefDragOperation); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnUpdateDragCursor(TCefBrowserRef.UnWrap(browser), operation);
end;
procedure cef_render_handler_on_scroll_offset_changed(self : PCefRenderHandler;
browser : PCefBrowser;
x : Double;
y : Double); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnScrollOffsetChanged(TCefBrowserRef.UnWrap(browser),
x,
y);
end;
procedure cef_render_handler_on_ime_composition_range_changed( self : PCefRenderHandler;
browser : PCefBrowser;
const selected_range : PCefRange;
character_boundsCount : NativeUInt;
const character_bounds : PCefRect); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnIMECompositionRangeChanged(TCefBrowserRef.UnWrap(browser),
selected_range,
character_boundsCount,
character_bounds);
end;
procedure cef_render_handler_on_text_selection_changed( self : PCefRenderHandler;
browser : PCefBrowser;
const selected_text : PCefString;
const selected_range : PCefRange); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnTextSelectionChanged(TCefBrowserRef.UnWrap(browser),
CefString(selected_text),
selected_range);
end;
procedure cef_render_handler_on_virtual_keyboard_requested(self : PCefRenderHandler;
browser : PCefBrowser;
input_mode : TCefTextInpuMode); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefRenderHandlerOwn) then
TCefRenderHandlerOwn(TempObject).OnVirtualKeyboardRequested(TCefBrowserRef.UnWrap(browser),
input_mode);
end;
constructor TCefRenderHandlerOwn.Create;
begin
inherited CreateData(SizeOf(TCefRenderHandler));
with PCefRenderHandler(FData)^ do
begin
get_accessibility_handler := {$IFDEF FPC}@{$ENDIF}cef_render_handler_get_accessibility_handler;
get_root_screen_rect := {$IFDEF FPC}@{$ENDIF}cef_render_handler_get_root_screen_rect;
get_view_rect := {$IFDEF FPC}@{$ENDIF}cef_render_handler_get_view_rect;
get_screen_point := {$IFDEF FPC}@{$ENDIF}cef_render_handler_get_screen_point;
get_screen_info := {$IFDEF FPC}@{$ENDIF}cef_render_handler_get_screen_info;
on_popup_show := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_popup_show;
on_popup_size := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_popup_size;
on_paint := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_paint;
on_accelerated_paint := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_accelerated_paint;
on_cursor_change := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_cursor_change;
start_dragging := {$IFDEF FPC}@{$ENDIF}cef_render_handler_start_dragging;
update_drag_cursor := {$IFDEF FPC}@{$ENDIF}cef_render_handler_update_drag_cursor;
on_scroll_offset_changed := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_scroll_offset_changed;
on_ime_composition_range_changed := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_ime_composition_range_changed;
on_text_selection_changed := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_text_selection_changed;
on_virtual_keyboard_requested := {$IFDEF FPC}@{$ENDIF}cef_render_handler_on_virtual_keyboard_requested;
end;
end;
procedure TCefRenderHandlerOwn.GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler);
begin
aAccessibilityHandler := nil;
end;
function TCefRenderHandlerOwn.GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean;
begin
Result := False;
end;
function TCefRenderHandlerOwn.GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean;
begin
Result := False;
end;
function TCefRenderHandlerOwn.GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean;
begin
Result := False;
end;
procedure TCefRenderHandlerOwn.GetViewRect(const browser: ICefBrowser; var rect: TCefRect);
begin
//
end;
procedure TCefRenderHandlerOwn.OnCursorChange(const browser: ICefBrowser; cursor: TCefCursorHandle; CursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo);
begin
//
end;
procedure TCefRenderHandlerOwn.OnPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer);
begin
//
end;
procedure TCefRenderHandlerOwn.OnAcceleratedPaint(const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; shared_handle: Pointer);
begin
//
end;
procedure TCefRenderHandlerOwn.OnPopupShow(const browser: ICefBrowser; show: Boolean);
begin
//
end;
procedure TCefRenderHandlerOwn.OnPopupSize(const browser: ICefBrowser; const rect: PCefRect);
begin
//
end;
procedure TCefRenderHandlerOwn.OnScrollOffsetChanged(const browser: ICefBrowser; x, y: Double);
begin
//
end;
procedure TCefRenderHandlerOwn.OnIMECompositionRangeChanged(const browser : ICefBrowser;
const selected_range : PCefRange;
character_boundsCount : NativeUInt;
const character_bounds : PCefRect);
begin
//
end;
procedure TCefRenderHandlerOwn.OnTextSelectionChanged(const browser : ICefBrowser;
const selected_text : ustring;
const selected_range : PCefRange);
begin
//
end;
procedure TCefRenderHandlerOwn.OnVirtualKeyboardRequested(const browser : ICefBrowser;
input_mode : TCefTextInpuMode);
begin
//
end;
function TCefRenderHandlerOwn.OnStartDragging(const browser: ICefBrowser; const dragData: ICefDragData; allowedOps: TCefDragOperations; x, y: Integer): Boolean;
begin
Result := False;
end;
procedure TCefRenderHandlerOwn.OnUpdateDragCursor(const browser: ICefBrowser; operation: TCefDragOperation);
begin
//
end;
procedure TCefRenderHandlerOwn.RemoveReferences;
begin
//
end;
// TCustomRenderHandler
constructor TCustomRenderHandler.Create(const events : IChromiumEvents);
begin
inherited Create;
FEvents := Pointer(events);
end;
destructor TCustomRenderHandler.Destroy;
begin
RemoveReferences;
inherited Destroy;
end;
procedure TCustomRenderHandler.RemoveReferences;
begin
FEvents := nil;
end;
procedure TCustomRenderHandler.GetAccessibilityHandler(var aAccessibilityHandler : ICefAccessibilityHandler);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnGetAccessibilityHandler(aAccessibilityHandler);
end;
function TCustomRenderHandler.GetRootScreenRect(const browser: ICefBrowser; var rect: TCefRect): Boolean;
begin
if (FEvents <> nil) then
Result := IChromiumEvents(FEvents).doOnGetRootScreenRect(browser, rect)
else
Result := inherited GetRootScreenRect(browser, rect);
end;
function TCustomRenderHandler.GetScreenInfo(const browser: ICefBrowser; var screenInfo: TCefScreenInfo): Boolean;
begin
if (FEvents <> nil) then
Result := IChromiumEvents(FEvents).doOnGetScreenInfo(browser, screenInfo)
else
Result := inherited GetScreenInfo(browser, screenInfo);
end;
function TCustomRenderHandler.GetScreenPoint(const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer): Boolean;
begin
if (FEvents <> nil) then
Result := IChromiumEvents(FEvents).doOnGetScreenPoint(browser, viewX, viewY, screenX, screenY)
else
Result := inherited GetScreenPoint(browser, viewX, viewY, screenX, screenY);
end;
procedure TCustomRenderHandler.GetViewRect(const browser: ICefBrowser; var rect: TCefRect);
begin
if (FEvents <> nil) then
IChromiumEvents(FEvents).doOnGetViewRect(browser, rect)
else
inherited GetViewRect(browser, rect);
end;
procedure TCustomRenderHandler.OnCursorChange(const browser : ICefBrowser;
cursor : TCefCursorHandle;
cursorType : TCefCursorType;
const customCursorInfo : PCefCursorInfo);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnCursorChange(browser, cursor, cursorType, customCursorInfo);
end;
procedure TCustomRenderHandler.OnPaint(const browser : ICefBrowser;
kind : TCefPaintElementType;
dirtyRectsCount : NativeUInt;
const dirtyRects : PCefRectArray;
const buffer : Pointer;
width : Integer;
height : Integer);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnPaint(browser, kind, dirtyRectsCount, dirtyRects, buffer, width, height);
end;
procedure TCustomRenderHandler.OnAcceleratedPaint(const browser : ICefBrowser;
kind : TCefPaintElementType;
dirtyRectsCount : NativeUInt;
const dirtyRects : PCefRectArray;
shared_handle : Pointer);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnAcceleratedPaint(browser, kind, dirtyRectsCount, dirtyRects, shared_handle);
end;
procedure TCustomRenderHandler.OnPopupShow(const browser: ICefBrowser; show: Boolean);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnPopupShow(browser, show);
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;
procedure TCustomRenderHandler.OnTextSelectionChanged(const browser : ICefBrowser;
const selected_text : ustring;
const selected_range : PCefRange);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnTextSelectionChanged(browser, selected_text, selected_range);
end;
procedure TCustomRenderHandler.OnVirtualKeyboardRequested(const browser : ICefBrowser;
input_mode : TCefTextInpuMode);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnVirtualKeyboardRequested(browser, input_mode);
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.