mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 08:15:55 +01:00
feaeb772cb
- Added GlobalCEFApp.DisableNewBrowserInfoTimeout property - Removed remaining TCEFSentinel from all the demos. - Fixed mouse coordinates in FMX demos with OSR browsers before sending a mouse wheel event.
260 lines
8.9 KiB
ObjectPascal
260 lines
8.9 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 uExternalPumpBrowser;
|
|
|
|
{$I cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
{$IFDEF DELPHI16_UP}
|
|
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
|
|
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls,
|
|
{$ELSE}
|
|
Windows, Messages, SysUtils, Variants, Classes, Graphics,
|
|
Controls, Forms, Dialogs, StdCtrls, ExtCtrls,
|
|
{$ENDIF}
|
|
uCEFChromium, uCEFWindowParent, uCEFTypes, uCEFConstants, uCEFInterfaces, uCEFWorkScheduler,
|
|
uCEFWinControl, uCEFSentinel;
|
|
|
|
type
|
|
|
|
{ TExternalPumpBrowserFrm }
|
|
|
|
TExternalPumpBrowserFrm = class(TForm)
|
|
AddressPnl: TPanel;
|
|
GoBtn: TButton;
|
|
Timer1: TTimer;
|
|
CEFWindowParent1: TCEFWindowParent;
|
|
Chromium1: TChromium;
|
|
URLCbx: TComboBox;
|
|
|
|
procedure CEFSentinel1Close(Sender: TObject);
|
|
procedure GoBtnClick(Sender: TObject);
|
|
procedure FormShow(Sender: TObject);
|
|
procedure Timer1Timer(Sender: TObject);
|
|
|
|
procedure FormCreate(Sender: TObject);
|
|
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
|
|
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
|
|
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction : TCefCloseBrowserAction);
|
|
procedure Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
|
|
procedure Chromium1BeforePopup(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);
|
|
|
|
private
|
|
FCanClose : boolean;
|
|
FClosing : boolean;
|
|
|
|
procedure BrowserCreatedMsg(var aMessage : TMessage); message CEF_AFTERCREATED;
|
|
procedure BrowserDestroyMsg(var aMessage : TMessage); message CEF_DESTROY;
|
|
procedure WMMove(var aMessage : TWMMove); message WM_MOVE;
|
|
procedure WMMoving(var aMessage : TMessage); message WM_MOVING;
|
|
procedure WMEnterMenuLoop(var aMessage: TMessage); message WM_ENTERMENULOOP;
|
|
procedure WMExitMenuLoop(var aMessage: TMessage); message WM_EXITMENULOOP;
|
|
|
|
public
|
|
|
|
end;
|
|
|
|
var
|
|
ExternalPumpBrowserFrm : TExternalPumpBrowserFrm;
|
|
|
|
procedure CreateGlobalCEFApp;
|
|
|
|
implementation
|
|
|
|
{$R *.lfm}
|
|
|
|
uses
|
|
uCEFApplication;
|
|
|
|
// This demo has a simple browser with a TChromium + TCEFWindowParent combination
|
|
// It was necessary to destroy the browser following the destruction sequence described in the MDIBrowser demo.
|
|
|
|
// Destruction steps
|
|
// =================
|
|
// 1. FormCloseQuery sets CanClose to FALSE calls TChromium.CloseBrowser which triggers the TChromium.OnClose event.
|
|
// 2. TChromium.OnClose sends a CEFBROWSER_DESTROY message to destroy CEFWindowParent1 in the main thread, which triggers the TChromium.OnBeforeClose event.
|
|
// 3. TChromium.OnBeforeClose calls TCEFSentinel.Start, which will trigger TCEFSentinel.OnClose when the renderer processes are closed.
|
|
// 4. TCEFSentinel.OnClose sets FCanClose := True and sends WM_CLOSE to the form.
|
|
|
|
procedure GlobalCEFApp_OnScheduleMessagePumpWork(const aDelayMS : int64);
|
|
begin
|
|
if (GlobalCEFWorkScheduler <> nil) then GlobalCEFWorkScheduler.ScheduleMessagePumpWork(aDelayMS);
|
|
end;
|
|
|
|
procedure CreateGlobalCEFApp;
|
|
begin
|
|
// TCEFWorkScheduler will call cef_do_message_loop_work when
|
|
// it's told in the GlobalCEFApp.OnScheduleMessagePumpWork event.
|
|
// GlobalCEFWorkScheduler needs to be created before the
|
|
// GlobalCEFApp.StartMainProcess call.
|
|
GlobalCEFWorkScheduler := TCEFWorkScheduler.Create(nil);
|
|
|
|
GlobalCEFApp := TCefApplication.Create;
|
|
GlobalCEFApp.FlashEnabled := False;
|
|
GlobalCEFApp.ExternalMessagePump := True;
|
|
GlobalCEFApp.MultiThreadedMessageLoop := False;
|
|
GlobalCEFApp.OnScheduleMessagePumpWork := GlobalCEFApp_OnScheduleMessagePumpWork;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.FormCreate(Sender: TObject);
|
|
begin
|
|
FCanClose := False;
|
|
FClosing := False;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
begin
|
|
CanClose := FCanClose;
|
|
|
|
if not(FClosing) then
|
|
begin
|
|
FClosing := True;
|
|
Visible := False;
|
|
AddressPnl.Enabled := False;
|
|
Chromium1.CloseBrowser(True);
|
|
end;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.FormShow(Sender: TObject);
|
|
begin
|
|
// GlobalCEFApp.GlobalContextInitialized has to be TRUE before creating any browser
|
|
// If it's not initialized yet, we use a simple timer to create the browser later.
|
|
if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) then Timer1.Enabled := True;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
|
|
begin
|
|
PostMessage(Handle, CEF_AFTERCREATED, 0, 0);
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
|
|
begin
|
|
FCanClose := True;
|
|
PostMessage(Handle, WM_CLOSE, 0, 0);
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.Chromium1BeforePopup(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);
|
|
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 TExternalPumpBrowserFrm.Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction : TCefCloseBrowserAction);
|
|
begin
|
|
PostMessage(Handle, CEF_DESTROY, 0, 0);
|
|
aAction := cbaDelay;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.BrowserCreatedMsg(var aMessage : TMessage);
|
|
begin
|
|
Caption := 'External Pump Browser';
|
|
CEFWindowParent1.UpdateSize;
|
|
AddressPnl.Enabled := True;
|
|
GoBtn.Click;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.BrowserDestroyMsg(var aMessage : TMessage);
|
|
begin
|
|
CEFWindowParent1.Free;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.GoBtnClick(Sender: TObject);
|
|
begin
|
|
Chromium1.LoadURL(URLCbx.Text);
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.CEFSentinel1Close(Sender: TObject);
|
|
begin
|
|
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.Timer1Timer(Sender: TObject);
|
|
begin
|
|
Timer1.Enabled := False;
|
|
if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) and not(Chromium1.Initialized) then
|
|
Timer1.Enabled := True;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.WMMove(var aMessage : TWMMove);
|
|
begin
|
|
inherited;
|
|
|
|
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.WMMoving(var aMessage : TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.WMEnterMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
|
|
end;
|
|
|
|
procedure TExternalPumpBrowserFrm.WMExitMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
|
|
end;
|
|
|
|
end.
|