// ************************************************************************ // ***************************** 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 © 2023 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 * 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 uMainForm; {$I cef.inc} interface uses {$IFDEF MSWINDOWS}Winapi.Messages, Winapi.Windows,{$ENDIF} System.Types, System.UITypes, System.Classes, System.SyncObjs, FMX.Types, FMX.Controls, FMX.Forms, FMX.Edit, FMX.StdCtrls, FMX.Controls.Presentation, FMX.ComboEdit, {$IFDEF DELPHI17_UP}FMX.Graphics,{$ENDIF} uCEFFMXChromium, uCEFFMXBufferPanel, uCEFFMXWorkScheduler, uCEFInterfaces, uCEFTypes, uCEFConstants, uCEFChromiumCore, // The following units come from the Skia4Delphi project Skia, Skia.FMX, Skia.FMX.Graphics; type TMainForm = class(TForm) AddressPnl: TPanel; chrmosr: TFMXChromium; Timer1: TTimer; GoBtn: TButton; AddressCb: TComboEdit; SkPaintBox1: TSkPaintBox; Panel1: TPanel; procedure GoBtnClick(Sender: TObject); procedure GoBtnEnter(Sender: TObject); procedure Panel1Enter(Sender: TObject); procedure Panel1Exit(Sender: TObject); procedure Panel1Click(Sender: TObject); procedure Panel1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Single); procedure Panel1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Single); procedure Panel1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Single); procedure Panel1MouseLeave(Sender: TObject); procedure Panel1MouseWheel(Sender: TObject; Shift: TShiftState; WheelDelta: Integer; var Handled: Boolean); procedure Panel1KeyDown(Sender: TObject; var Key: Word; var KeyChar: Char; Shift: TShiftState); procedure FormCreate(Sender: TObject); procedure FormDestroy(Sender: TObject); procedure FormShow(Sender: TObject); procedure FormHide(Sender: TObject); procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean); procedure chrmosrPaint(Sender: TObject; const browser: ICefBrowser; type_: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer); procedure chrmosrGetViewRect(Sender: TObject; const browser: ICefBrowser; var rect: TCefRect); procedure chrmosrGetScreenPoint(Sender: TObject; const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer; out Result: Boolean); procedure chrmosrGetScreenInfo(Sender: TObject; const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out Result: Boolean); procedure chrmosrPopupShow(Sender: TObject; const browser: ICefBrowser; show: Boolean); procedure chrmosrPopupSize(Sender: TObject; const browser: ICefBrowser; const rect: PCefRect); procedure chrmosrBeforeClose(Sender: TObject; const browser: ICefBrowser); procedure chrmosrTooltip(Sender: TObject; const browser: ICefBrowser; var text: ustring; out Result: Boolean); procedure chrmosrBeforePopup(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const targetUrl, targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; const popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo; var client: ICefClient; var settings: TCefBrowserSettings; var extra_info: ICefDictionaryValue; var noJavascriptAccess: Boolean; var Result: Boolean); procedure chrmosrAfterCreated(Sender: TObject; const browser: ICefBrowser); procedure chrmosrCursorChange(Sender: TObject; const browser: ICefBrowser; cursor_: TCefCursorHandle; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo; var aResult: Boolean); procedure Timer1Timer(Sender: TObject); procedure AddressEdtEnter(Sender: TObject); procedure SkPaintBox1Draw(ASender: TObject; const ACanvas: ISkCanvas; const ADest: TRectF; const AOpacity: Single); procedure Panel1Resize(Sender: TObject); protected FPopUpBitmap : TBitmap; FPopUpRect : TRect; FShowPopUp : boolean; FCanClose : boolean; FClosing : boolean; FAtLeastWin8 : boolean; FImage : ISkImage; FPopupImage : ISkImage; FImageInfo : TSkImageInfo; {$IFDEF DELPHI17_UP} FMouseWheelService : IFMXMouseService; {$ENDIF} FLastClickCount : integer; FLastClickTime : integer; FLastClickPoint : TPointF; FLastClickButton : TMouseButton; function getModifiers(Shift: TShiftState): TCefEventFlags; function GetButton(Button: TMouseButton): TCefMouseButtonType; function GetMousePosition(var aPoint : TPointF) : boolean; procedure InitializeLastClick; function CancelPreviousClick(const x, y : single; var aCurrentTime : integer) : boolean; procedure DoRedraw; procedure DoResize; function RealScreenScale: single; {$IFDEF MSWINDOWS} function SendCompMessage(aMsg : cardinal; aWParam : WPARAM = 0; aLParam : LPARAM = 0) : boolean; function ArePointerEventsSupported : boolean; function HandlePenEvent(const aID : uint32; aMsg : cardinal) : boolean; function HandleTouchEvent(const aID : uint32; aMsg : cardinal) : boolean; overload; function HandlePointerEvent(const aMessage : TMsg) : boolean; {$ENDIF} public procedure NotifyMoveOrResizeStarted; procedure SendCaptureLostEvent; procedure SetBounds(ALeft: Integer; ATop: Integer; AWidth: Integer; AHeight: Integer); override; {$IFDEF MSWINDOWS} procedure HandleSYSCHAR(const aMessage : TMsg); procedure HandleSYSKEYDOWN(const aMessage : TMsg); procedure HandleSYSKEYUP(const aMessage : TMsg); procedure HandleKEYDOWN(const aMessage : TMsg); procedure HandleKEYUP(const aMessage : TMsg); function HandlePOINTER(const aMessage : TMsg) : boolean; {$ENDIF} end; var MainForm : TMainForm; // This is a simple browser using the FireMonkey framework in OSR mode (off-screen rendering). // It uses a external message pump, a different executable for the CEF subprocesses and // the components from the Skia4Delphi project. // In order to build this demo it's necessary to download and install the latest // version of Skia4Delphi from here : // https://www.skia4delphi.org/ // https://github.com/skia4delphi/skia4delphi // It's recomemded to understand the code in the SimpleOSRBrowser and OSRExternalPumpBrowser demos before // reading the code in this demo. // Due to the Firemonkey code structure, this demo uses a IFMXApplicationService interface implemented in // uFMXApplicationService.pas to intercept some windows messages needed to make a CEF browser work. // The TFMXApplicationService.HandleMessages function receives many of the messages that the // OSRExternalPumpBrowser demo hadled in the main form or in the GlobalFMXWorkScheduler. // It was necessary to destroy the browser following the destruction sequence described in // the MDIBrowser demo but in OSR mode there are some modifications. // All FMX applications using CEF4Delphi should add the $(FrameworkType) conditional define // in the project options to avoid duplicated resources. // This demo has that define in the menu option : // Project -> Options -> Building -> Delphi compiler -> Conditional defines (All configurations) // This is the destruction sequence in OSR mode : // 1- FormCloseQuery sets CanClose to the initial FCanClose value (False) and // calls chrmosr.CloseBrowser(True). // 2- chrmosr.CloseBrowser(True) will trigger chrmosr.OnClose and the default // implementation will destroy the internal browser immediately, which will // trigger the chrmosr.OnBeforeClose event. // 3- chrmosr.OnBeforeClose sets FCanClose to True and closes the form. procedure CreateGlobalCEFApp; implementation {$R *.fmx} uses System.SysUtils, System.Math, FMX.Platform, FMX.Platform.Win, FMX.Helpers.Win, uCEFMiscFunctions, uCEFApplication, uFMXApplicationService; procedure GlobalCEFApp_OnScheduleMessagePumpWork(const aDelayMS : int64); begin if (GlobalFMXWorkScheduler <> nil) then GlobalFMXWorkScheduler.ScheduleMessagePumpWork(aDelayMS); end; procedure CreateGlobalCEFApp; begin GlobalCEFApp := TCefApplication.Create; GlobalCEFApp.WindowlessRenderingEnabled := True; GlobalCEFApp.EnableHighDPISupport := True; GlobalCEFApp.ExternalMessagePump := True; GlobalCEFApp.MultiThreadedMessageLoop := False; GlobalCEFApp.EnableGPU := True; GlobalCEFApp.BrowserSubprocessPath := 'FMXSkiaBrowser_sp.exe'; GlobalCEFApp.OnScheduleMessagePumpWork := GlobalCEFApp_OnScheduleMessagePumpWork; {$IFDEF DEBUG} //GlobalCEFApp.LogFile := 'debug.log'; //GlobalCEFApp.LogSeverity := LOGSEVERITY_INFO; {$ENDIF} // TFMXWorkScheduler will call cef_do_message_loop_work when // it's told in the GlobalCEFApp.OnScheduleMessagePumpWork event. // GlobalFMXWorkScheduler needs to be created before the // GlobalCEFApp.StartMainProcess call. GlobalFMXWorkScheduler := TFMXWorkScheduler.Create(nil); end; procedure TMainForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean); begin CanClose := FCanClose; if not(FClosing) then begin FClosing := True; Visible := False; AddressPnl.Enabled := False; chrmosr.CloseBrowser(True); end; end; procedure TMainForm.FormCreate(Sender: TObject); var TempMajorVer, TempMinorVer : DWORD; begin TFMXApplicationService.AddPlatformService; // We need a control that can be focused when the browser has the focus. // The background panel can focus and receive all keyboard and mouse events. Panel1.CanFocus := True; FImage := nil; FPopupImage := nil; FPopUpBitmap := nil; FPopUpRect := rect(0, 0, 0, 0); FShowPopUp := False; FCanClose := False; FClosing := False; {$IFDEF MSWINDOWS} FAtLeastWin8 := GetWindowsMajorMinorVersion(TempMajorVer, TempMinorVer) and ((TempMajorVer > 6) or ((TempMajorVer = 6) and (TempMinorVer >= 2))); {$ELSE} FAtLeastWin8 := False; {$ENDIF} chrmosr.DefaultURL := AddressCb.Text; InitializeLastClick; {$IFDEF DELPHI17_UP} if TPlatformServices.Current.SupportsPlatformService(IFMXMouseService) then FMouseWheelService := TPlatformServices.Current.GetPlatformService(IFMXMouseService) as IFMXMouseService; {$ENDIF} end; procedure TMainForm.FormDestroy(Sender: TObject); begin if (FPopUpBitmap <> nil) then FreeAndNil(FPopUpBitmap); FImage := nil; FPopupImage := nil; end; procedure TMainForm.FormHide(Sender: TObject); begin chrmosr.SetFocus(False); chrmosr.WasHidden(True); end; procedure TMainForm.FormShow(Sender: TObject); begin if chrmosr.Initialized then begin chrmosr.WasHidden(False); chrmosr.SetFocus(True); end else begin // opaque white background color chrmosr.Options.BackgroundColor := CefColorSetARGB($FF, $FF, $FF, $FF); if not(chrmosr.CreateBrowser) then Timer1.Enabled := True; end; end; function TMainForm.GetMousePosition(var aPoint : TPointF) : boolean; begin {$IFDEF DELPHI17_UP} if (FMouseWheelService <> nil) then begin aPoint := FMouseWheelService.GetMousePos; Result := True; end else begin aPoint.x := 0; aPoint.y := 0; Result := False; end; {$ELSE} TempPointF := Platform.GetMousePos; Result := True; {$ENDIF} end; procedure TMainForm.GoBtnClick(Sender: TObject); begin chrmosr.LoadURL(AddressCb.Text); end; procedure TMainForm.GoBtnEnter(Sender: TObject); begin chrmosr.SetFocus(False); end; procedure TMainForm.Panel1Enter(Sender: TObject); begin chrmosr.SetFocus(True); end; procedure TMainForm.Panel1Exit(Sender: TObject); begin chrmosr.SetFocus(False); end; procedure TMainForm.Panel1Resize(Sender: TObject); begin chrmosr.WasResized; end; procedure TMainForm.Panel1Click(Sender: TObject); begin Panel1.SetFocus; end; procedure TMainForm.Panel1MouseDown(Sender : TObject; Button : TMouseButton; Shift : TShiftState; X, Y : Single); var TempEvent : TCefMouseEvent; TempTime : integer; begin if not(ssTouch in Shift) then begin Panel1.SetFocus; if not(CancelPreviousClick(x, y, TempTime)) and (Button = FLastClickButton) then inc(FLastClickCount) else begin FLastClickPoint.x := x; FLastClickPoint.y := y; FLastClickCount := 1; end; FLastClickTime := TempTime; FLastClickButton := Button; TempEvent.x := round(X); TempEvent.y := round(Y); TempEvent.modifiers := getModifiers(Shift); chrmosr.SendMouseClickEvent(@TempEvent, GetButton(Button), False, FLastClickCount); end; end; procedure TMainForm.Panel1MouseUp(Sender : TObject; Button : TMouseButton; Shift : TShiftState; X, Y : Single); var TempEvent : TCefMouseEvent; begin if not(ssTouch in Shift) then begin TempEvent.x := round(X); TempEvent.y := round(Y); TempEvent.modifiers := getModifiers(Shift); chrmosr.SendMouseClickEvent(@TempEvent, GetButton(Button), True, FLastClickCount); end; end; procedure TMainForm.Panel1MouseMove(Sender : TObject; Shift : TShiftState; X, Y : Single); var TempEvent : TCefMouseEvent; TempTime : integer; begin if not(ssTouch in Shift) then begin if CancelPreviousClick(x, y, TempTime) then InitializeLastClick; TempEvent.x := round(x); TempEvent.y := round(y); TempEvent.modifiers := getModifiers(Shift); chrmosr.SendMouseMoveEvent(@TempEvent, False); end; end; procedure TMainForm.Panel1MouseLeave(Sender: TObject); var TempEvent : TCefMouseEvent; TempPoint : TPointF; TempTime : integer; begin if GetMousePosition(TempPoint) then begin TempPoint := Panel1.ScreenToLocal(TempPoint); if CancelPreviousClick(TempPoint.x, TempPoint.y, TempTime) then InitializeLastClick; TempEvent.x := round(TempPoint.x); TempEvent.y := round(TempPoint.y); TempEvent.modifiers := GetCefMouseModifiers; chrmosr.SendMouseMoveEvent(@TempEvent, True); end; end; procedure TMainForm.Panel1MouseWheel( Sender : TObject; Shift : TShiftState; WheelDelta : Integer; var Handled : Boolean); var TempEvent : TCefMouseEvent; TempPoint : TPointF; begin if Panel1.IsFocused and GetMousePosition(TempPoint) then begin TempPoint := Panel1.ScreenToLocal(TempPoint); TempEvent.x := round(TempPoint.x); TempEvent.y := round(TempPoint.y); TempEvent.modifiers := getModifiers(Shift); chrmosr.SendMouseWheelEvent(@TempEvent, 0, WheelDelta); end; end; procedure TMainForm.Panel1KeyDown( Sender : TObject; var Key : Word; var KeyChar : Char; Shift : TShiftState); var TempKeyEvent : TCefKeyEvent; begin if not(Panel1.IsFocused) then exit; if (Key = 0) and (KeyChar <> #0) then begin TempKeyEvent.kind := KEYEVENT_CHAR; TempKeyEvent.modifiers := getModifiers(Shift); TempKeyEvent.windows_key_code := ord(KeyChar); TempKeyEvent.native_key_code := 0; TempKeyEvent.is_system_key := ord(False); TempKeyEvent.character := #0; TempKeyEvent.unmodified_character := #0; TempKeyEvent.focus_on_editable_field := ord(False); chrmosr.SendKeyEvent(@TempKeyEvent); end else if (Key <> 0) and (KeyChar = #0) and (Key in [vkLeft, vkRight, vkUp, vkDown]) then Key := 0; end; procedure TMainForm.Timer1Timer(Sender: TObject); begin Timer1.Enabled := False; if not(chrmosr.CreateBrowser) and not(chrmosr.Initialized) then Timer1.Enabled := True; end; procedure TMainForm.AddressEdtEnter(Sender: TObject); begin chrmosr.SetFocus(False); end; procedure TMainForm.chrmosrAfterCreated(Sender: TObject; const browser: ICefBrowser); begin // Now the browser is fully initialized we can enable the UI. Caption := 'FMX Skia Browser'; AddressPnl.Enabled := True; Panel1.SetFocus; end; procedure TMainForm.chrmosrBeforeClose(Sender: TObject; const browser: ICefBrowser); begin FCanClose := True; {$IFDEF MSWINDOWS} SendCompMessage(WM_CLOSE); {$ELSE} TThread.ForceQueue(nil, procedure begin close; end); {$ENDIF} end; procedure TMainForm.chrmosrBeforePopup( Sender : TObject; const browser : ICefBrowser; const frame : ICefFrame; const targetUrl : ustring; const targetFrameName : ustring; targetDisposition : TCefWindowOpenDisposition; userGesture : Boolean; const popupFeatures : TCefPopupFeatures; var windowInfo : TCefWindowInfo; var client : ICefClient; var settings : TCefBrowserSettings; var extra_info : ICefDictionaryValue; var noJavascriptAccess : Boolean; var Result : Boolean); begin // For simplicity, this demo blocks all popup windows and new tabs Result := (targetDisposition in [WOD_NEW_FOREGROUND_TAB, WOD_NEW_BACKGROUND_TAB, WOD_NEW_POPUP, WOD_NEW_WINDOW]); end; procedure TMainForm.chrmosrCursorChange( Sender : TObject; const browser : ICefBrowser; cursor_ : TCefCursorHandle; cursorType : TCefCursorType; const customCursorInfo : PCefCursorInfo; var aResult : Boolean); begin Panel1.Cursor := CefCursorToWindowsCursor(cursorType); aResult := True; end; procedure TMainForm.chrmosrGetScreenInfo( Sender : TObject; const browser : ICefBrowser; var screenInfo : TCefScreenInfo; out Result : Boolean); var TempRect : TCEFRect; begin TempRect.x := 0; TempRect.y := 0; TempRect.width := round(Panel1.Width); TempRect.height := round(Panel1.Height); screenInfo.device_scale_factor := GlobalCEFApp.DeviceScaleFactor; screenInfo.depth := 0; screenInfo.depth_per_component := 0; screenInfo.is_monochrome := Ord(False); screenInfo.rect := TempRect; screenInfo.available_rect := TempRect; Result := True; end; procedure TMainForm.chrmosrGetScreenPoint( Sender : TObject; const browser : ICefBrowser; viewX : Integer; viewY : Integer; var screenX : Integer; var screenY : Integer; out Result : Boolean); var TempScreenPt, TempViewPt : TPointF; TempScale : single; begin TempScale := RealScreenScale; TempViewPt.x := viewX; TempViewPt.y := viewY; TempScreenPt := Panel1.LocalToScreen(TempViewPt); screenX := LogicalToDevice(round(TempScreenPt.x), TempScale); screenY := LogicalToDevice(round(TempScreenPt.y), TempScale); Result := True; end; procedure TMainForm.chrmosrGetViewRect( Sender : TObject; const browser : ICefBrowser; var rect : TCefRect); begin rect.x := 0; rect.y := 0; rect.width := round(Panel1.Width); rect.height := round(Panel1.Height); end; procedure TMainForm.chrmosrPaint( Sender : TObject; const browser : ICefBrowser; type_ : TCefPaintElementType; dirtyRectsCount : NativeUInt; const dirtyRects : PCefRectArray; const buffer : Pointer; width : Integer; height : Integer); var TempMustResize : boolean; TempImageInfo : TSkImageInfo; begin case type_ of PET_VIEW : begin TempMustResize := (FImageInfo.Width <> width) or (FImageInfo.Height <> height); FImageInfo := TSkImageInfo.Create(width, height); FImage := TSkImage.MakeRasterCopy(FImageInfo, buffer, FImageInfo.MinRowBytes); TThread.ForceQueue(nil, DoRedraw); if TempMustResize then TThread.ForceQueue(nil, DoResize); end; PET_POPUP : begin TempImageInfo := TSkImageInfo.Create(width, height); FPopupImage := TSkImage.MakeRasterCopy(TempImageInfo, buffer, TempImageInfo.MinRowBytes); TThread.ForceQueue(nil, DoRedraw); end; end; end; procedure TMainForm.chrmosrPopupShow( Sender : TObject; const browser : ICefBrowser; show : Boolean); begin if show then FShowPopUp := True else begin FShowPopUp := False; FPopUpRect := rect(0, 0, 0, 0); chrmosr.Invalidate(PET_VIEW); end; end; procedure TMainForm.chrmosrPopupSize( Sender : TObject; const browser : ICefBrowser; const rect : PCefRect); begin if (GlobalCEFApp <> nil) then begin LogicalToDevice(rect^, GlobalCEFApp.DeviceScaleFactor); FPopUpRect.Left := rect.x; FPopUpRect.Top := rect.y; FPopUpRect.Right := rect.x + rect.width - 1; FPopUpRect.Bottom := rect.y + rect.height - 1; end; end; procedure TMainForm.chrmosrTooltip( Sender : TObject; const browser : ICefBrowser; var text : ustring; out Result : Boolean); begin Panel1.Hint := text; Panel1.ShowHint := (length(text) > 0); Result := True; end; procedure TMainForm.DoRedraw; begin SkPaintBox1.Redraw; end; procedure TMainForm.DoResize; begin chrmosr.WasResized; end; function TMainForm.RealScreenScale: single; var TempHandle: TCefWindowHandle; begin if assigned(GlobalCEFApp) then result := GlobalCEFApp.DeviceScaleFactor else result := 1; TempHandle := FmxHandleToHWND(Handle); if (TempHandle <> 0) then Result := GetWndScale(TempHandle); end; procedure TMainForm.SetBounds(ALeft, ATop, AWidth, AHeight: Integer); var PositionChanged: Boolean; begin PositionChanged := (ALeft <> Left) or (ATop <> Top); inherited SetBounds(ALeft, ATop, AWidth, AHeight); if PositionChanged then NotifyMoveOrResizeStarted; end; procedure TMainForm.SkPaintBox1Draw(ASender: TObject; const ACanvas: ISkCanvas; const ADest: TRectF; const AOpacity: Single); var TempRect : TRectF; begin if not(assigned(FImage)) then exit; ACanvas.Save; try TempRect.Left := 0; TempRect.Top := 0; TempRect.Right := FImage.Width / GlobalCEFApp.DeviceScaleFactor; TempRect.Bottom := FImage.Height / GlobalCEFApp.DeviceScaleFactor; ACanvas.ClipRect(ADest); ACanvas.DrawImageRect(FImage, TempRect); if FShowPopUp and assigned(FPopupImage) then begin TempRect.Left := FPopUpRect.Left / GlobalCEFApp.DeviceScaleFactor; TempRect.Top := FPopUpRect.Top / GlobalCEFApp.DeviceScaleFactor; TempRect.Right := TempRect.Left + (FPopupImage.Width / GlobalCEFApp.DeviceScaleFactor); TempRect.Bottom := TempRect.Top + (FPopupImage.Height / GlobalCEFApp.DeviceScaleFactor); ACanvas.DrawImageRect(FPopupImage, TempRect); end; finally ACanvas.Restore; end; end; procedure TMainForm.NotifyMoveOrResizeStarted; begin if (chrmosr <> nil) then chrmosr.NotifyMoveOrResizeStarted; end; procedure TMainForm.SendCaptureLostEvent; begin if (chrmosr <> nil) then chrmosr.SendCaptureLostEvent; end; function TMainForm.getModifiers(Shift: TShiftState): TCefEventFlags; begin Result := EVENTFLAG_NONE; if (ssShift in Shift) then Result := Result or EVENTFLAG_SHIFT_DOWN; if (ssAlt in Shift) then Result := Result or EVENTFLAG_ALT_DOWN; if (ssCtrl in Shift) then Result := Result or EVENTFLAG_CONTROL_DOWN; if (ssLeft in Shift) then Result := Result or EVENTFLAG_LEFT_MOUSE_BUTTON; if (ssRight in Shift) then Result := Result or EVENTFLAG_RIGHT_MOUSE_BUTTON; if (ssMiddle in Shift) then Result := Result or EVENTFLAG_MIDDLE_MOUSE_BUTTON; end; function TMainForm.GetButton(Button: TMouseButton): TCefMouseButtonType; begin case Button of TMouseButton.mbRight : Result := MBT_RIGHT; TMouseButton.mbMiddle : Result := MBT_MIDDLE; else Result := MBT_LEFT; end; end; procedure TMainForm.InitializeLastClick; begin FLastClickCount := 1; FLastClickTime := 0; FLastClickPoint.x := 0; FLastClickPoint.y := 0; FLastClickButton := TMouseButton.mbLeft; end; function TMainForm.CancelPreviousClick(const x, y : single; var aCurrentTime : integer) : boolean; begin {$IFDEF MSWINDOWS} aCurrentTime := GetMessageTime; Result := (abs(FLastClickPoint.x - x) > (GetSystemMetrics(SM_CXDOUBLECLK) div 2)) or (abs(FLastClickPoint.y - y) > (GetSystemMetrics(SM_CYDOUBLECLK) div 2)) or (cardinal(aCurrentTime - FLastClickTime) > GetDoubleClickTime); {$ELSE} aCurrentTime := 0; Result := False; {$ENDIF} end; {$IFDEF MSWINDOWS} procedure TMainForm.HandleSYSCHAR(const aMessage : TMsg); var TempKeyEvent : TCefKeyEvent; begin if Panel1.IsFocused and (aMessage.wParam in [VK_BACK..VK_HELP]) then begin TempKeyEvent.kind := KEYEVENT_CHAR; TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam); TempKeyEvent.windows_key_code := integer(aMessage.wParam); TempKeyEvent.native_key_code := integer(aMessage.lParam); TempKeyEvent.is_system_key := ord(True); TempKeyEvent.character := #0; TempKeyEvent.unmodified_character := #0; TempKeyEvent.focus_on_editable_field := ord(False); chrmosr.SendKeyEvent(@TempKeyEvent); end; end; procedure TMainForm.HandleSYSKEYDOWN(const aMessage : TMsg); var TempKeyEvent : TCefKeyEvent; begin if Panel1.IsFocused and (aMessage.wParam in [VK_BACK..VK_HELP]) then begin TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN; TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam); TempKeyEvent.windows_key_code := integer(aMessage.wParam); TempKeyEvent.native_key_code := integer(aMessage.lParam); TempKeyEvent.is_system_key := ord(True); TempKeyEvent.character := #0; TempKeyEvent.unmodified_character := #0; TempKeyEvent.focus_on_editable_field := ord(False); chrmosr.SendKeyEvent(@TempKeyEvent); end; end; procedure TMainForm.HandleSYSKEYUP(const aMessage : TMsg); var TempKeyEvent : TCefKeyEvent; begin if Panel1.IsFocused and (aMessage.wParam in [VK_BACK..VK_HELP]) then begin TempKeyEvent.kind := KEYEVENT_KEYUP; TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam); TempKeyEvent.windows_key_code := integer(aMessage.wParam); TempKeyEvent.native_key_code := integer(aMessage.lParam); TempKeyEvent.is_system_key := ord(True); TempKeyEvent.character := #0; TempKeyEvent.unmodified_character := #0; TempKeyEvent.focus_on_editable_field := ord(False); chrmosr.SendKeyEvent(@TempKeyEvent); end; end; procedure TMainForm.HandleKEYDOWN(const aMessage : TMsg); var TempKeyEvent : TCefKeyEvent; begin if Panel1.IsFocused then begin TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN; TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam); TempKeyEvent.windows_key_code := integer(aMessage.wParam); TempKeyEvent.native_key_code := integer(aMessage.lParam); TempKeyEvent.is_system_key := ord(False); TempKeyEvent.character := #0; TempKeyEvent.unmodified_character := #0; TempKeyEvent.focus_on_editable_field := ord(False); chrmosr.SendKeyEvent(@TempKeyEvent); end; end; procedure TMainForm.HandleKEYUP(const aMessage : TMsg); var TempKeyEvent : TCefKeyEvent; begin if Panel1.IsFocused then begin if (aMessage.wParam = vkReturn) then begin TempKeyEvent.kind := KEYEVENT_CHAR; TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam); TempKeyEvent.windows_key_code := integer(aMessage.wParam); TempKeyEvent.native_key_code := integer(aMessage.lParam); TempKeyEvent.is_system_key := ord(False); TempKeyEvent.character := #0; TempKeyEvent.unmodified_character := #0; TempKeyEvent.focus_on_editable_field := ord(False); chrmosr.SendKeyEvent(@TempKeyEvent); end; TempKeyEvent.kind := KEYEVENT_KEYUP; TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam); TempKeyEvent.windows_key_code := integer(aMessage.wParam); TempKeyEvent.native_key_code := integer(aMessage.lParam); TempKeyEvent.is_system_key := ord(False); TempKeyEvent.character := #0; TempKeyEvent.unmodified_character := #0; TempKeyEvent.focus_on_editable_field := ord(False); chrmosr.SendKeyEvent(@TempKeyEvent); end; end; function TMainForm.HandlePOINTER(const aMessage : TMsg) : boolean; begin Result := Panel1.IsFocused and (GlobalCEFApp <> nil) and ArePointerEventsSupported and HandlePointerEvent(aMessage); end; function TMainForm.SendCompMessage(aMsg : cardinal; aWParam : WPARAM; aLParam : LPARAM) : boolean; var TempHandle : TWinWindowHandle; begin TempHandle := WindowHandleToPlatform(Handle); Result := WinApi.Windows.PostMessage(TempHandle.Wnd, aMsg, aWParam, aLParam); end; function TMainForm.ArePointerEventsSupported : boolean; begin Result := FAtLeastWin8 and (@GetPointerType <> nil) and (@GetPointerTouchInfo <> nil) and (@GetPointerPenInfo <> nil); end; function TMainForm.HandlePointerEvent(const aMessage : TMsg) : boolean; const PT_TOUCH = 2; PT_PEN = 3; var TempID : uint32; TempType : POINTER_INPUT_TYPE; begin Result := False; TempID := LoWord(aMessage.wParam); if GetPointerType(TempID, @TempType) then case TempType of PT_PEN : Result := HandlePenEvent(TempID, aMessage.message); PT_TOUCH : Result := HandleTouchEvent(TempID, aMessage.message); end; end; function TMainForm.HandlePenEvent(const aID : uint32; aMsg : cardinal) : boolean; var TempPenInfo : POINTER_PEN_INFO; TempTouchEvent : TCefTouchEvent; TempPointF : TPointF; TempScale : single; begin Result := False; if not(GetPointerPenInfo(aID, @TempPenInfo)) then exit; TempTouchEvent.id := aID; TempTouchEvent.x := 0; TempTouchEvent.y := 0; TempTouchEvent.radius_x := 0; TempTouchEvent.radius_y := 0; TempTouchEvent.type_ := CEF_TET_RELEASED; TempTouchEvent.modifiers := EVENTFLAG_NONE; if ((TempPenInfo.penFlags and PEN_FLAG_ERASER) <> 0) then TempTouchEvent.pointer_type := CEF_POINTER_TYPE_ERASER else TempTouchEvent.pointer_type := CEF_POINTER_TYPE_PEN; if ((TempPenInfo.penMask and PEN_MASK_PRESSURE) <> 0) then TempTouchEvent.pressure := TempPenInfo.pressure / 1024 else TempTouchEvent.pressure := 0; if ((TempPenInfo.penMask and PEN_MASK_ROTATION) <> 0) then TempTouchEvent.rotation_angle := TempPenInfo.rotation / 180 * Pi else TempTouchEvent.rotation_angle := 0; Result := True; case aMsg of WM_POINTERDOWN : TempTouchEvent.type_ := CEF_TET_PRESSED; WM_POINTERUPDATE : if ((TempPenInfo.pointerInfo.pointerFlags and POINTER_FLAG_INCONTACT) <> 0) then TempTouchEvent.type_ := CEF_TET_MOVED else exit; // Ignore hover events. WM_POINTERUP : TempTouchEvent.type_ := CEF_TET_RELEASED; end; if ((TempPenInfo.pointerInfo.pointerFlags and POINTER_FLAG_CANCELED) <> 0) then TempTouchEvent.type_ := CEF_TET_CANCELLED; TempScale := RealScreenScale; TempPointF.x := DeviceToLogical(TempPenInfo.pointerInfo.ptPixelLocation.x, TempScale); TempPointF.y := DeviceToLogical(TempPenInfo.pointerInfo.ptPixelLocation.y, TempScale); TempPointF := Panel1.ScreenToLocal(TempPointF); TempTouchEvent.x := round(TempPointF.x); TempTouchEvent.y := round(TempPointF.y); chrmosr.SendTouchEvent(@TempTouchEvent); end; function TMainForm.HandleTouchEvent(const aID : uint32; aMsg : cardinal) : boolean; var TempTouchInfo : POINTER_TOUCH_INFO; TempTouchEvent : TCefTouchEvent; TempPointF : TPointF; TempScale : single; begin Result := False; if not(GetPointerTouchInfo(aID, @TempTouchInfo)) then exit; TempTouchEvent.id := aID; TempTouchEvent.x := 0; TempTouchEvent.y := 0; TempTouchEvent.radius_x := 0; TempTouchEvent.radius_y := 0; TempTouchEvent.rotation_angle := 0; TempTouchEvent.pressure := 0; TempTouchEvent.type_ := CEF_TET_RELEASED; TempTouchEvent.modifiers := EVENTFLAG_NONE; TempTouchEvent.pointer_type := CEF_POINTER_TYPE_TOUCH; Result := True; case aMsg of WM_POINTERDOWN : TempTouchEvent.type_ := CEF_TET_PRESSED; WM_POINTERUPDATE : if ((TempTouchInfo.pointerInfo.pointerFlags and POINTER_FLAG_INCONTACT) <> 0) then TempTouchEvent.type_ := CEF_TET_MOVED else exit; // Ignore hover events. WM_POINTERUP : TempTouchEvent.type_ := CEF_TET_RELEASED; end; if ((TempTouchInfo.pointerInfo.pointerFlags and POINTER_FLAG_CANCELED) <> 0) then TempTouchEvent.type_ := CEF_TET_CANCELLED; TempScale := RealScreenScale; TempPointF.x := DeviceToLogical(TempTouchInfo.pointerInfo.ptPixelLocation.x, TempScale); TempPointF.y := DeviceToLogical(TempTouchInfo.pointerInfo.ptPixelLocation.y, TempScale); TempPointF := Panel1.ScreenToLocal(TempPointF); TempTouchEvent.x := round(TempPointF.x); TempTouchEvent.y := round(TempPointF.y); chrmosr.SendTouchEvent(@TempTouchEvent); end; {$ENDIF} end.