You've already forked CEF4Delphi
mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2025-12-03 21:44:45 +02:00
Added partial GTK3 support
Converted the OSRExternalPumpBrowser demo to GTK3 Converted the TinyBrowser demo to GTK3 Converted the TinyBrowser2 demo to GTK3 Moved all Lazarus demos for Linux to the Lazarus_Linux_GTK2 directory Fixed the Copy.CEF.DLLs tool thanks to fraurino
This commit is contained in:
salvadordf
291
demos/Lazarus_Linux_GTK2/SubProcess/uSubProcess.pas
Normal file
291
demos/Lazarus_Linux_GTK2/SubProcess/uSubProcess.pas
Normal file
@@ -0,0 +1,291 @@
|
||||
// ************************************************************************
|
||||
// ***************************** 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 © 2022 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 uSubProcess;
|
||||
|
||||
{$mode objfpc}{$H+}
|
||||
|
||||
interface
|
||||
|
||||
uses
|
||||
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls, LMessages,
|
||||
uCEFChromium, uCEFWindowParent, uCEFConstants, uCEFTypes, uCEFInterfaces,
|
||||
uCEFChromiumEvents, uCEFLinkedWindowParent;
|
||||
|
||||
const
|
||||
CEF_SETFOCUS = 1;
|
||||
|
||||
type
|
||||
{ TForm1 }
|
||||
TForm1 = class(TForm)
|
||||
AddressEdt: TEdit;
|
||||
CEFLinkedWindowParent1: TCEFLinkedWindowParent;
|
||||
GoBtn: TButton;
|
||||
Chromium1: TChromium;
|
||||
AddressPnl: TPanel;
|
||||
Timer1: TTimer;
|
||||
|
||||
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
|
||||
procedure Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
|
||||
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction: TCefCloseBrowserAction);
|
||||
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);
|
||||
procedure Chromium1GotFocus(Sender: TObject; const browser: ICefBrowser);
|
||||
procedure Chromium1OpenUrlFromTab(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const targetUrl: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; out Result: Boolean);
|
||||
|
||||
procedure FormCreate(Sender: TObject);
|
||||
procedure FormActivate(Sender: TObject);
|
||||
procedure FormCloseQuery(Sender: TObject; var CanClose: boolean);
|
||||
|
||||
procedure GoBtnClick(Sender: TObject);
|
||||
procedure Timer1Timer(Sender: TObject);
|
||||
|
||||
procedure CEFLinkedWindowParent1Enter(Sender: TObject);
|
||||
procedure CEFLinkedWindowParent1Exit(Sender: TObject);
|
||||
private
|
||||
|
||||
protected
|
||||
// Variables to control when can we destroy the form safely
|
||||
FCanClose : boolean; // Set to True in TChromium.OnBeforeClose
|
||||
FClosing : boolean; // Set to True in the CloseQuery event.
|
||||
|
||||
// CEF needs to handle these messages to call TChromium.NotifyMoveOrResizeStarted
|
||||
procedure WMMove(var Message: TLMMove); message LM_MOVE;
|
||||
procedure WMSize(var Message: TLMSize); message LM_SIZE;
|
||||
procedure WMWindowPosChanged(var Message: TLMWindowPosChanged); message LM_WINDOWPOSCHANGED;
|
||||
|
||||
procedure SendCompMessage(aMsg : cardinal);
|
||||
|
||||
procedure BrowserCreatedMsg(Data: PtrInt);
|
||||
procedure BrowserCloseFormMsg(Data: PtrInt);
|
||||
procedure BrowserSetFocusMsg(Data: PtrInt);
|
||||
public
|
||||
|
||||
end;
|
||||
|
||||
var
|
||||
Form1: TForm1;
|
||||
|
||||
procedure CreateGlobalCEFApp;
|
||||
|
||||
implementation
|
||||
|
||||
{$R *.lfm}
|
||||
|
||||
// This is a demo based on the SimpleBrowser2 demo but it uses a different
|
||||
// executable for the Chromium subprocesses.
|
||||
|
||||
// Before running this demo you need to build the "SubProcess_sp.lpr" project.
|
||||
|
||||
// Destruction steps
|
||||
// =================
|
||||
// 1. FormCloseQuery sets CanClose to FALSE calls TChromium.CloseBrowser which triggers the TChromium.OnClose event.
|
||||
// 2. TChromium.OnClose sets aAction to cbaClose to destroy the browser, which triggers the TChromium.OnBeforeClose event.
|
||||
// 3. TChromium.OnBeforeClose sets FCanClose := True and sends CEF_BEFORECLOSE to close the form.
|
||||
|
||||
uses
|
||||
uCEFApplication;
|
||||
|
||||
{ TForm1 }
|
||||
|
||||
|
||||
procedure CreateGlobalCEFApp;
|
||||
begin
|
||||
GlobalCEFApp := TCefApplication.Create;
|
||||
GlobalCEFApp.BrowserSubprocessPath := 'SubProcess_sp'; // This is the name of the executable used by CEF for the Chromium subprocesses
|
||||
end;
|
||||
|
||||
procedure TForm1.FormCreate(Sender: TObject);
|
||||
begin
|
||||
FCanClose := False;
|
||||
FClosing := False;
|
||||
|
||||
Chromium1.DefaultURL := UTF8Decode(AddressEdt.Text);
|
||||
end;
|
||||
|
||||
procedure TForm1.GoBtnClick(Sender: TObject);
|
||||
begin
|
||||
Chromium1.LoadURL(UTF8Decode(AddressEdt.Text));
|
||||
end;
|
||||
|
||||
procedure TForm1.Timer1Timer(Sender: TObject);
|
||||
begin
|
||||
Timer1.Enabled := False;
|
||||
if not(Chromium1.CreateBrowser(CEFLinkedWindowParent1.Handle, CEFLinkedWindowParent1.BoundsRect)) and
|
||||
not(Chromium1.Initialized) then
|
||||
Timer1.Enabled := True;
|
||||
end;
|
||||
|
||||
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: boolean);
|
||||
begin
|
||||
CanClose := FCanClose;
|
||||
|
||||
if not(FClosing) then
|
||||
begin
|
||||
FClosing := True;
|
||||
Visible := False;
|
||||
Chromium1.CloseBrowser(True);
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure TForm1.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 TForm1.Chromium1OpenUrlFromTab(Sender: TObject;
|
||||
const browser: ICefBrowser; const frame: ICefFrame; const targetUrl: ustring;
|
||||
targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; out
|
||||
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.FormActivate(Sender: TObject);
|
||||
begin
|
||||
// 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.
|
||||
|
||||
// Linux needs a visible form to create a browser so we need to use the
|
||||
// TForm.OnActivate event instead of the TForm.OnShow event
|
||||
|
||||
if not(Chromium1.Initialized) and
|
||||
not(Chromium1.CreateBrowser(CEFLinkedWindowParent1.Handle, CEFLinkedWindowParent1.BoundsRect)) then
|
||||
Timer1.Enabled := True;
|
||||
end;
|
||||
|
||||
procedure TForm1.Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction: TCefCloseBrowserAction);
|
||||
begin
|
||||
// continue closing the browser
|
||||
aAction := cbaClose;
|
||||
end;
|
||||
|
||||
procedure TForm1.Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
|
||||
begin
|
||||
// We must wait until all browsers trigger the TChromium.OnBeforeClose event
|
||||
// in order to close the application safely or we will have shutdown issues.
|
||||
FCanClose := True;
|
||||
SendCompMessage(CEF_BEFORECLOSE);
|
||||
end;
|
||||
|
||||
procedure TForm1.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
|
||||
begin
|
||||
// Now the browser is fully initialized we can initialize the UI.
|
||||
SendCompMessage(CEF_AFTERCREATED);
|
||||
end;
|
||||
|
||||
// This is a workaround for the CEF issue #2026
|
||||
// https://bitbucket.org/chromiumembedded/cef/issues/2026/multiple-major-keyboard-focus-issues-on
|
||||
// We use CEFLinkedWindowParent1.OnEnter, CEFLinkedWindowParent1.OnExit and
|
||||
// TChromium.OnGotFocus to avoid most of the focus issues.
|
||||
// CEFLinkedWindowParent1.TabStop must be TRUE.
|
||||
procedure TForm1.CEFLinkedWindowParent1Exit(Sender: TObject);
|
||||
begin
|
||||
if not(csDesigning in ComponentState) then
|
||||
Chromium1.SendCaptureLostEvent;
|
||||
end;
|
||||
|
||||
procedure TForm1.CEFLinkedWindowParent1Enter(Sender: TObject);
|
||||
begin
|
||||
if not(csDesigning in ComponentState) and
|
||||
Chromium1.Initialized and
|
||||
not(Chromium1.FrameIsFocused) then
|
||||
Chromium1.SetFocus(True);
|
||||
end;
|
||||
|
||||
procedure TForm1.Chromium1GotFocus(Sender: TObject; const browser: ICefBrowser);
|
||||
begin
|
||||
SendCompMessage(CEF_SETFOCUS);
|
||||
end;
|
||||
|
||||
procedure TForm1.BrowserCreatedMsg(Data: PtrInt);
|
||||
begin
|
||||
Caption := 'SubProcess Browser';
|
||||
AddressPnl.Enabled := True;
|
||||
end;
|
||||
|
||||
procedure TForm1.BrowserCloseFormMsg(Data: PtrInt);
|
||||
begin
|
||||
Close;
|
||||
end;
|
||||
|
||||
procedure TForm1.BrowserSetFocusMsg(Data: PtrInt);
|
||||
begin
|
||||
CEFLinkedWindowParent1.SetFocus;
|
||||
end;
|
||||
|
||||
procedure TForm1.SendCompMessage(aMsg : cardinal);
|
||||
begin
|
||||
case aMsg of
|
||||
CEF_AFTERCREATED : Application.QueueAsyncCall(@BrowserCreatedMsg, 0);
|
||||
CEF_BEFORECLOSE : Application.QueueAsyncCall(@BrowserCloseFormMsg, 0);
|
||||
CEF_SETFOCUS : Application.QueueAsyncCall(@BrowserSetFocusMsg, 0);
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure TForm1.WMMove(var Message: TLMMove);
|
||||
begin
|
||||
inherited;
|
||||
Chromium1.NotifyMoveOrResizeStarted;
|
||||
end;
|
||||
|
||||
procedure TForm1.WMSize(var Message: TLMSize);
|
||||
begin
|
||||
inherited;
|
||||
Chromium1.NotifyMoveOrResizeStarted;
|
||||
end;
|
||||
|
||||
procedure TForm1.WMWindowPosChanged(var Message: TLMWindowPosChanged);
|
||||
begin
|
||||
inherited;
|
||||
Chromium1.NotifyMoveOrResizeStarted;
|
||||
end;
|
||||
|
||||
|
||||
end.
|
||||
|
||||
Reference in New Issue
Block a user