mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
373 lines
12 KiB
ObjectPascal
373 lines
12 KiB
ObjectPascal
unit uBrowserFrame;
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{$I ..\..\..\source\cef.inc}
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interface
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uses
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{$IFDEF MSWINDOWS}Winapi.Windows,{$ENDIF}
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System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
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FMX.Types, FMX.Graphics, FMX.Controls, FMX.Forms, FMX.Dialogs, FMX.StdCtrls,
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FMX.Edit, FMX.Layouts, FMX.Controls.Presentation, FMX.TabControl,
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uCEFChromiumCore, uCEFFMXChromium, uCEFFMXWindowParent, uCEFInterfaces,
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uCEFTypes, uCEFConstants;
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type
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TBrowserTitleEvent = procedure(Sender: TObject; const aTitle : string) of object;
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TBrowserFrame = class(TFrame)
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FMXChromium1: TFMXChromium;
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AddressLay: TLayout;
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GoBtn: TSpeedButton;
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NavButtonLay: TLayout;
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BackBtn: TSpeedButton;
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ForwardBtn: TSpeedButton;
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ReloadBtn: TSpeedButton;
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StopBtn: TSpeedButton;
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URLEdt: TEdit;
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WindowParentLay: TLayout;
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FocusWorkaroundBtn: TButton;
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StatusBar1: TStatusBar;
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StatusLbl: TLabel;
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procedure BackBtnClick(Sender: TObject);
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procedure ForwardBtnClick(Sender: TObject);
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procedure ReloadBtnClick(Sender: TObject);
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procedure StopBtnClick(Sender: TObject);
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procedure GoBtnClick(Sender: TObject);
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procedure WindowParentLayResize(Sender: TObject);
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procedure FMXChromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
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procedure FMXChromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
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procedure FMXChromium1BeforePopup(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, Result: Boolean);
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procedure FMXChromium1OpenUrlFromTab(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const targetUrl: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; out Result: Boolean);
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procedure FMXChromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction: TCefCloseBrowserAction);
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procedure FMXChromium1AddressChange(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
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procedure FMXChromium1LoadError(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; errorCode: TCefErrorCode; const errorText, failedUrl: ustring);
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procedure FMXChromium1LoadingStateChange(Sender: TObject; const browser: ICefBrowser; isLoading, canGoBack, canGoForward: Boolean);
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procedure FMXChromium1TitleChange(Sender: TObject; const browser: ICefBrowser; const title: ustring);
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procedure FMXChromium1GotFocus(Sender: TObject; const browser: ICefBrowser);
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procedure FMXChromium1StatusMessage(Sender: TObject; const browser: ICefBrowser; const value: ustring);
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protected
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FClosing : boolean; // Indicates that this frame is destroying the browser
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FHomepage : string; // Used to set the TChromium.DefaultURL property
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FOnBrowserDestroyed : TNotifyEvent;
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FOnBrowserClosing : TNotifyEvent;
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FOnBrowserTitleChange : TBrowserTitleEvent;
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FMXWindowParent : TFMXWindowParent; // TFMXWindowParent has to be created at runtime. See the SimpleFMXBrowser demo for more details.
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function GetParentForm : TCustomForm;
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function GetParentTab : TTabItem;
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function GetFMXWindowParentRect : TRect;
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procedure CreateFMXWindowParent;
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public
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constructor Create(AOwner : TComponent); override;
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procedure NotifyMoveOrResizeStarted;
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procedure CreateBrowser;
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procedure CloseBrowser;
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procedure ResizeBrowser;
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procedure ShowBrowser;
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procedure HideBrowser;
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procedure DestroyWindowParent;
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property ParentForm : TCustomForm read GetParentForm;
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property ParentTab : TTabItem read GetParentTab;
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property Closing : boolean read FClosing;
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property Homepage : string read FHomepage write FHomepage;
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property OnBrowserDestroyed : TNotifyEvent read FOnBrowserDestroyed write FOnBrowserDestroyed;
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property OnBrowserTitleChange : TBrowserTitleEvent read FOnBrowserTitleChange write FOnBrowserTitleChange;
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property OnBrowserClosing : TNotifyEvent read FOnBrowserClosing write FOnBrowserClosing;
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end;
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implementation
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{$R *.fmx}
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uses
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FMX.Platform, {$IFDEF MSWINDOWS}FMX.Platform.Win,{$ENDIF}
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uCEFMiscFunctions, uCEFApplication, uBrowserTab, uMainForm;
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procedure TBrowserFrame.BackBtnClick(Sender: TObject);
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begin
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FMXChromium1.GoBack;
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end;
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constructor TBrowserFrame.Create(AOwner : TComponent);
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begin
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inherited Create(AOwner);
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FClosing := False;
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FHomepage := '';
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FOnBrowserDestroyed := nil;
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FOnBrowserTitleChange := nil;
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FOnBrowserClosing := nil;
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FMXWindowParent := nil;
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end;
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function TBrowserFrame.GetFMXWindowParentRect : TRect;
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var
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TempPoint : TPointF;
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begin
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TempPoint := LocalToAbsolute(WindowParentLay.Position.Point);
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Result.Left := round(TempPoint.x);
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Result.Top := round(TempPoint.y);
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Result.Right := round(TempPoint.x + WindowParentLay.Width);
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Result.Bottom := round(TempPoint.y + WindowParentLay.Height);
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end;
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procedure TBrowserFrame.ReloadBtnClick(Sender: TObject);
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begin
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FMXChromium1.Reload;
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end;
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procedure TBrowserFrame.ResizeBrowser;
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begin
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if (FMXWindowParent <> nil) then
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begin
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FMXWindowParent.SetBounds(GetFMXWindowParentRect);
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FMXWindowParent.UpdateSize;
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end;
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end;
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procedure TBrowserFrame.ShowBrowser;
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begin
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if (FMXWindowParent <> nil) then
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begin
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FMXWindowParent.WindowState := TWindowState.wsNormal;
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ResizeBrowser;
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FMXWindowParent.Visible := True;
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end;
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end;
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procedure TBrowserFrame.HideBrowser;
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begin
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if (FMXWindowParent <> nil) then
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FMXWindowParent.Visible := False;
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end;
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procedure TBrowserFrame.DestroyWindowParent;
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begin
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if (FMXWindowParent <> nil) then FreeAndNil(FMXWindowParent);
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end;
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procedure TBrowserFrame.NotifyMoveOrResizeStarted;
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begin
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FMXChromium1.NotifyMoveOrResizeStarted;
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end;
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procedure TBrowserFrame.StopBtnClick(Sender: TObject);
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begin
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FMXChromium1.StopLoad;
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end;
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procedure TBrowserFrame.WindowParentLayResize(Sender: TObject);
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begin
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ResizeBrowser;
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end;
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procedure TBrowserFrame.CreateFMXWindowParent;
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begin
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if (FMXWindowParent = nil) then
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begin
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FMXWindowParent := TFMXWindowParent.CreateNew(nil);
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FMXWindowParent.Chromium := FMXChromium1;
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FMXWindowParent.Reparent(ParentForm.Handle);
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ResizeBrowser;
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FMXWindowParent.Show;
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end;
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end;
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procedure TBrowserFrame.FMXChromium1AddressChange(Sender: TObject;
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const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
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begin
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TThread.Queue(nil, procedure
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begin
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URLEdt.Text := url;
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end);
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end;
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procedure TBrowserFrame.FMXChromium1AfterCreated(Sender: TObject;
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const browser: ICefBrowser);
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begin
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TThread.Queue(nil, procedure
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begin
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AddressLay.Enabled := True;
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ResizeBrowser;
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end);
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end;
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procedure TBrowserFrame.FMXChromium1BeforeClose(Sender: TObject;
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const browser: ICefBrowser);
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begin
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if assigned(FOnBrowserDestroyed) then FOnBrowserDestroyed(Sender);
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end;
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procedure TBrowserFrame.FMXChromium1BeforePopup(Sender: TObject;
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const browser: ICefBrowser; const frame: ICefFrame; const targetUrl,
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targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition;
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userGesture: Boolean; const popupFeatures: TCefPopupFeatures;
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var windowInfo: TCefWindowInfo; var client: ICefClient;
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var settings: TCefBrowserSettings; var extra_info: ICefDictionaryValue;
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var noJavascriptAccess, Result: Boolean);
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begin
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// For simplicity, this demo blocks all popup windows and new tabs
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Result := (targetDisposition in [CEF_WOD_NEW_FOREGROUND_TAB, CEF_WOD_NEW_BACKGROUND_TAB, CEF_WOD_NEW_POPUP, CEF_WOD_NEW_WINDOW]);
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end;
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procedure TBrowserFrame.FMXChromium1Close(Sender: TObject;
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const browser: ICefBrowser; var aAction: TCefCloseBrowserAction);
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begin
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aAction := cbaDelay;
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if assigned(FOnBrowserClosing) then FOnBrowserClosing(self);
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end;
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procedure TBrowserFrame.FMXChromium1GotFocus(Sender: TObject;
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const browser: ICefBrowser);
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begin
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// We use a hidden button to fix the focus issues when the browser has the real focus.
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TThread.Queue(nil,
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procedure
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begin
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FocusWorkaroundBtn.SetFocus;
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end);
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end;
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procedure TBrowserFrame.FMXChromium1LoadError(Sender: TObject;
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const browser: ICefBrowser; const frame: ICefFrame; errorCode: TCefErrorCode;
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const errorText, failedUrl: ustring);
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var
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TempString : string;
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begin
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if (errorCode = ERR_ABORTED) then exit;
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TempString := '<html><body bgcolor="white">' +
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'<h2>Failed to load URL ' + failedUrl +
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' with error ' + errorText +
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' (' + inttostr(errorCode) + ').</h2></body></html>';
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FMXChromium1.LoadString(TempString, frame);
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end;
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procedure TBrowserFrame.FMXChromium1LoadingStateChange(Sender: TObject;
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const browser: ICefBrowser; isLoading, canGoBack, canGoForward: Boolean);
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begin
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TThread.Queue(nil, procedure
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begin
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BackBtn.Enabled := canGoBack;
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ForwardBtn.Enabled := canGoForward;
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if isLoading then
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begin
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ReloadBtn.Enabled := False;
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StopBtn.Enabled := True;
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end
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else
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begin
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ReloadBtn.Enabled := True;
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StopBtn.Enabled := False;
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end;
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end);
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end;
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procedure TBrowserFrame.FMXChromium1OpenUrlFromTab(Sender: TObject;
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const browser: ICefBrowser; const frame: ICefFrame; const targetUrl: ustring;
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targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean;
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out Result: Boolean);
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begin
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// For simplicity, this demo blocks all popup windows and new tabs
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Result := (targetDisposition in [CEF_WOD_NEW_FOREGROUND_TAB, CEF_WOD_NEW_BACKGROUND_TAB, CEF_WOD_NEW_POPUP, CEF_WOD_NEW_WINDOW]);
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end;
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procedure TBrowserFrame.FMXChromium1StatusMessage(Sender: TObject;
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const browser: ICefBrowser; const value: ustring);
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begin
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TThread.Queue(nil,
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procedure
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begin
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StatusLbl.Text := value;
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end);
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end;
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procedure TBrowserFrame.FMXChromium1TitleChange(Sender: TObject;
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const browser: ICefBrowser; const title: ustring);
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begin
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if assigned(FOnBrowserTitleChange) then FOnBrowserTitleChange(Sender, title);
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end;
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procedure TBrowserFrame.ForwardBtnClick(Sender: TObject);
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begin
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FMXChromium1.GoForward;
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end;
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function TBrowserFrame.GetParentForm : TCustomForm;
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var
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TempParent : TTabItem;
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begin
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Result := nil;
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TempParent := ParentTab;
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if (TempParent <> nil) and (TempParent is TBrowserTab) then
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Result := TBrowserTab(TempParent).ParentForm;
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end;
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function TBrowserFrame.GetParentTab : TTabItem;
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var
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TempParent : TFMXObject;
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begin
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Result := nil;
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TempParent := Parent;
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while (TempParent <> nil) and not(TempParent is TTabItem) do
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TempParent := TempParent.Parent;
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if (TempParent <> nil) and (TempParent is TTabItem) then
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Result := TTabItem(TempParent);
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end;
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procedure TBrowserFrame.GoBtnClick(Sender: TObject);
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begin
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FMXChromium1.LoadURL(URLEdt.Text);
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end;
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procedure TBrowserFrame.CreateBrowser;
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var
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{$IFDEF MSWINDOWS}
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TempHandle : HWND;
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TempRect : System.Types.TRect;
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TempClientRect : TRectF;
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TempScale : single;
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{$ENDIF}
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begin
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CreateFMXWindowParent;
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if not(FMXChromium1.Initialized) then
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begin
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{$IFDEF MSWINDOWS}
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TempHandle := FmxHandleToHWND(FMXWindowParent.Handle);
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TempClientRect := FMXWindowParent.ClientRect;
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TempScale := FMXChromium1.ScreenScale;
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TempRect.Left := round(TempClientRect.Left);
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TempRect.Top := round(TempClientRect.Top);
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TempRect.Right := round(TempClientRect.Right * TempScale);
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TempRect.Bottom := round(TempClientRect.Bottom * TempScale);
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FMXChromium1.DefaultUrl := FHomepage;
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FMXChromium1.CreateBrowser(TempHandle, TempRect);
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{$ENDIF}
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end;
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end;
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procedure TBrowserFrame.CloseBrowser;
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begin
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if not(FClosing) then
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begin
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FClosing := True;
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AddressLay.Enabled := False;
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FMXChromium1.CloseBrowser(True);
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end;
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end;
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end.
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