mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 08:15:55 +01:00
9d17a50210
Added the SimpleBrowser demo for Linux. Added Linux support to TChromiumWindow. Removed unused code and added more code comments to the SimpleBrowser demos for Windows.
235 lines
8.6 KiB
ObjectPascal
235 lines
8.6 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 © 2021 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 uSimpleBrowser;
|
|
|
|
{$I cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
{$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, uCEFChromiumWindow, uCEFTypes, uCEFInterfaces,
|
|
uCEFWinControl;
|
|
|
|
type
|
|
|
|
{ TForm1 }
|
|
|
|
TForm1 = class(TForm)
|
|
ChromiumWindow1: TChromiumWindow;
|
|
AddressPnl: TPanel;
|
|
AddressEdt: TEdit;
|
|
GoBtn: TButton;
|
|
Timer1: TTimer;
|
|
|
|
procedure GoBtnClick(Sender: TObject);
|
|
procedure Timer1Timer(Sender: TObject);
|
|
|
|
procedure FormShow(Sender: TObject);
|
|
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
procedure FormCreate(Sender: TObject);
|
|
|
|
procedure ChromiumWindow1AfterCreated(Sender: TObject);
|
|
procedure ChromiumWindow1Close(Sender: TObject);
|
|
private
|
|
// You have to handle this two messages to call NotifyMoveOrResizeStarted or some page elements will be misaligned.
|
|
procedure WMMove(var aMessage : TWMMove); message WM_MOVE;
|
|
procedure WMMoving(var aMessage : TMessage); message WM_MOVING;
|
|
// You also have to handle these two messages to set GlobalCEFApp.OsmodalLoop
|
|
procedure WMEnterMenuLoop(var aMessage: TMessage); message WM_ENTERMENULOOP;
|
|
procedure WMExitMenuLoop(var aMessage: TMessage); message WM_EXITMENULOOP;
|
|
|
|
protected
|
|
// Variables to control when can we destroy the form safely
|
|
FCanClose : boolean; // Set to True in TChromium.OnClose
|
|
FClosing : boolean; // Set to True in the CloseQuery event.
|
|
|
|
procedure Chromium_OnBeforePopup(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);
|
|
|
|
public
|
|
{ Public declarations }
|
|
end;
|
|
|
|
var
|
|
Form1: TForm1;
|
|
|
|
|
|
implementation
|
|
|
|
{$R *.lfm}
|
|
|
|
uses
|
|
uCEFApplication;
|
|
|
|
// This is a demo with the simplest web browser you can build using CEF4Delphi and
|
|
// it doesn't show any sign of progress like other web browsers do.
|
|
|
|
// Remember that it may take a few seconds to load if Windows update, your antivirus or
|
|
// any other windows service is using your hard drive.
|
|
|
|
// Depending on your internet connection it may take longer than expected.
|
|
|
|
// This demo uses a TChromiumWindow component which should *ONLY* be used for extremely
|
|
// simple applications with a simple browser. For any other configuration it's
|
|
// recommended using a TChromium with a TCEFWindowParent as shown in the SimpleBrowser2 demo.
|
|
|
|
// Please check that your firewall or antivirus are not blocking this application
|
|
// or the domain "google.com". If you don't live in the US, you'll be redirected to
|
|
// another domain which will take a little time too.
|
|
|
|
// Destruction steps
|
|
// =================
|
|
// 1. The FormCloseQuery event sets CanClose to False and calls TChromiumWindow.CloseBrowser,
|
|
// which triggers the TChromiumWindow.OnClose event.
|
|
// 2. The TChromiumWindow.OnClose sets FCanClose to true and sends WM_CLOSE to the form.
|
|
|
|
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
begin
|
|
CanClose := FCanClose;
|
|
|
|
if not(FClosing) then
|
|
begin
|
|
FClosing := True;
|
|
Visible := False;
|
|
ChromiumWindow1.CloseBrowser(True);
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.FormCreate(Sender: TObject);
|
|
begin
|
|
FCanClose := False;
|
|
FClosing := False;
|
|
|
|
// The browser will load the URL in AddressEdt initially.
|
|
ChromiumWindow1.ChromiumBrowser.DefaultURL := AddressEdt.Text;
|
|
end;
|
|
|
|
procedure TForm1.FormShow(Sender: TObject);
|
|
begin
|
|
// For simplicity, this demo blocks all popup windows and new tabs
|
|
ChromiumWindow1.ChromiumBrowser.OnBeforePopup := Chromium_OnBeforePopup;
|
|
|
|
// You *MUST* call CreateBrowser to create and initialize the browser.
|
|
// This will trigger the AfterCreated event when the browser is fully
|
|
// initialized and ready to receive commands.
|
|
|
|
// 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(ChromiumWindow1.CreateBrowser) then Timer1.Enabled := True;
|
|
end;
|
|
|
|
procedure TForm1.ChromiumWindow1Close(Sender: TObject);
|
|
begin
|
|
FCanClose := True;
|
|
PostMessage(Handle, WM_CLOSE, 0, 0);
|
|
end;
|
|
|
|
procedure TForm1.Chromium_OnBeforePopup( 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 TForm1.ChromiumWindow1AfterCreated(Sender: TObject);
|
|
begin
|
|
Caption := 'Simple Browser';
|
|
AddressPnl.Enabled := True;
|
|
end;
|
|
|
|
procedure TForm1.GoBtnClick(Sender: TObject);
|
|
begin
|
|
// This will load the URL in the edit box
|
|
ChromiumWindow1.LoadURL(AddressEdt.Text);
|
|
end;
|
|
|
|
procedure TForm1.Timer1Timer(Sender: TObject);
|
|
begin
|
|
Timer1.Enabled := False;
|
|
if not(ChromiumWindow1.CreateBrowser) and not(ChromiumWindow1.Initialized) then
|
|
Timer1.Enabled := True;
|
|
end;
|
|
|
|
procedure TForm1.WMMove(var aMessage : TWMMove);
|
|
begin
|
|
inherited;
|
|
|
|
if (ChromiumWindow1 <> nil) then ChromiumWindow1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TForm1.WMMoving(var aMessage : TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (ChromiumWindow1 <> nil) then ChromiumWindow1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TForm1.WMEnterMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
|
|
end;
|
|
|
|
procedure TForm1.WMExitMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
|
|
end;
|
|
|
|
end.
|