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Added TabbedBrowser2 demo for Linux

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Update the TCEFBitmapBitBuffer size instead of destrying and creating it when the browser is resized.
This commit is contained in:
Salvador Diaz Fau
2021-01-03 18:36:17 +01:00
parent c3def9de88
commit 187a4d825c
16 changed files with 3221 additions and 37 deletions
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demos/Lazarus_Linux/TabbedBrowser2/00-Delete.bat Normal file
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rmdir /S /Q lib
rmdir /S /Q backup

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demos/Lazarus_Linux/TabbedBrowser2/TabbedBrowser2.dproj Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<CONFIG>
<ProjectOptions>
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<PathDelim Value="\"/>
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<Flags>
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<SessionStorage Value="InProjectDir"/>
<MainUnit Value="0"/>
<Title Value="TabbedBrowser2"/>
<UseAppBundle Value="False"/>
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// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF3 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 © 2018 Salvador Díaz 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.
*
*)
program TabbedBrowser2;
{$mode objfpc}{$H+}
{$I cef.inc}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
// "Interfaces" is a custom unit used to initialize the LCL WidgetSet
// We keep the same name to avoid a Lazarus warning.
Interfaces, // this includes the LCL widgetset
Forms,
uCEFApplication,
uMainForm in 'uMainForm.pas' {MainForm},
uBrowserFrame in 'uBrowserFrame.pas' {BrowserFrame: TFrame},
uBrowserTab in 'uBrowserTab.pas';
{.$R *.res}
begin
CreateGlobalCEFApp;
if GlobalCEFApp.StartMainProcess then
begin
// The LCL Widgetset must be initialized after the CEF initialization and
// only in the browser process.
CustomWidgetSetInitialization;
RequireDerivedFormResource:=True;
Application.Scaled:=True;
Application.Initialize;
Application.CreateForm(TMainForm, MainForm);
Application.Run;
CustomWidgetSetFinalization;
end;
DestroyGlobalCEFApp;
end.

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<CursorPos X="27" Y="118"/>
<UsageCount Value="10"/>
</Unit9>
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<UsageCount Value="10"/>
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// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF3 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 � 2017 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.
*
*)
// The complete list of compiler versions is here :
// http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Compiler_Versions
{$DEFINE DELPHI_VERSION_UNKNOW}
// Delphi 5
{$IFDEF VER130}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$ENDIF}
// Delphi 6
{$IFDEF VER140}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$ENDIF}
// Delphi 7
{$IFDEF VER150}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$ENDIF}
// Delphi 8
{$IFDEF VER160}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$ENDIF}
// Delphi 2005
{$IFDEF VER170}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$ENDIF}
{$IFDEF VER180}
{$UNDEF DELPHI_VERSION_UNKNOW}
// Delphi 2007
{$IFDEF VER185}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
// Delphi 2006
{$ELSE}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$ENDIF}
{$ENDIF}
// Delphi 2009
{$IFDEF VER200}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$ENDIF}
//Delphi 2010
{$IFDEF VER210}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$ENDIF}
// Delphi XE
{$IFDEF VER220}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$ENDIF}
// Delphi XE2 (First FireMonkey and 64bit compiler)
{$IFDEF VER230}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$ENDIF}
// Delphi XE3
{$IFDEF VER240}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$ENDIF}
// Delphi XE4
{$IFDEF VER250}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$ENDIF}
// Delphi XE5
{$IFDEF VER260}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$ENDIF}
// Delphi XE6
{$IFDEF VER270}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$ENDIF}
// Delphi XE7
{$IFDEF VER280}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$ENDIF}
// Delphi XE8
{$IFDEF VER290}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$DEFINE DELPHI22_UP}
{$ENDIF VER290}
// Rad Studio 10 - Delphi Seattle
{$IFDEF VER300}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$DEFINE DELPHI22_UP}
{$DEFINE DELPHI23_UP}
{$ENDIF}
// Rad Studio 10.1 - Delphi Berlin
{$IFDEF VER310}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$DEFINE DELPHI22_UP}
{$DEFINE DELPHI23_UP}
{$DEFINE DELPHI24_UP}
{$ENDIF}
// Rad Studio 10.2 - Delphi Tokyo
{$IFDEF VER320}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$DEFINE DELPHI22_UP}
{$DEFINE DELPHI23_UP}
{$DEFINE DELPHI24_UP}
{$DEFINE DELPHI25_UP}
{$ENDIF}
// Rad Studio 10.3 - Delphi Rio
{$IFDEF VER330}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$DEFINE DELPHI22_UP}
{$DEFINE DELPHI23_UP}
{$DEFINE DELPHI24_UP}
{$DEFINE DELPHI25_UP}
{$DEFINE DELPHI26_UP}
{$ENDIF}
// Rad Studio 10.4 - Delphi Sydney
{$IFDEF VER340}
{$UNDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$DEFINE DELPHI22_UP}
{$DEFINE DELPHI23_UP}
{$DEFINE DELPHI24_UP}
{$DEFINE DELPHI25_UP}
{$DEFINE DELPHI26_UP}
{$DEFINE DELPHI27_UP}
{$ENDIF}
{$IFDEF FPC}
{$DEFINE SUPPORTS_INLINE}
{$IF DEFINED(FPC_FULLVERSION) AND (FPC_FULLVERSION >= 30200)}
{$DEFINE FPC_VER_320}
{$IFEND}
{$ELSE}
{$IFDEF DELPHI_VERSION_UNKNOW}
{$DEFINE DELPHI5_UP}
{$DEFINE DELPHI6_UP}
{$DEFINE DELPHI7_UP}
{$DEFINE DELPHI8_UP}
{$DEFINE DELPHI9_UP}
{$DEFINE DELPHI10_UP}
{$DEFINE DELPHI11_UP}
{$DEFINE DELPHI12_UP}
{$DEFINE DELPHI14_UP}
{$DEFINE DELPHI15_UP}
{$DEFINE DELPHI16_UP}
{$DEFINE DELPHI17_UP}
{$DEFINE DELPHI18_UP}
{$DEFINE DELPHI19_UP}
{$DEFINE DELPHI20_UP}
{$DEFINE DELPHI21_UP}
{$DEFINE DELPHI22_UP}
{$DEFINE DELPHI23_UP}
{$DEFINE DELPHI24_UP}
{$DEFINE DELPHI25_UP}
{$DEFINE DELPHI26_UP}
{$DEFINE DELPHI27_UP}
{$ENDIF}
{$ENDIF}
{$IFDEF DELPHI9_UP}
{$DEFINE SUPPORTS_INLINE}
{$ENDIF}
{$IF DEFINED(CPUX32) OR
DEFINED(CPU386) OR
DEFINED(CPUi386) OR
DEFINED(CPUPOWERPC32) OR
DEFINED(CPUSPARC32) OR
DEFINED(CPU32BITS) OR
DEFINED(CPUARM32) OR
DEFINED(WIN32) OR
DEFINED(IOS32) OR
DEFINED(MACOS32) OR
DEFINED(LINUX32) OR
DEFINED(POSIX32) OR
DEFINED(ANDROID32)}
{$DEFINE TARGET_32BITS}
{$IFEND}

30
demos/Lazarus_Linux/TabbedBrowser2/interfaces.pas Normal file
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unit Interfaces;
{$mode objfpc}{$H+}
interface
{$IFDEF UNIX}{$IFNDEF DisableCWString}uses cwstring;{$ENDIF}{$ENDIF}
procedure CustomWidgetSetInitialization;
procedure CustomWidgetSetFinalization;
implementation
uses
{$IFNDEF EnableLibOverlay}
gtk2DisableLibOverlay,
{$ENDIF}
Gtk2Int, Forms;
procedure CustomWidgetSetInitialization;
begin
CreateWidgetset(TGtk2WidgetSet);
end;
procedure CustomWidgetSetFinalization;
begin
FreeWidgetSet;
end;
end.

221
demos/Lazarus_Linux/TabbedBrowser2/uBrowserFrame.lfm Normal file
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object BrowserFrame: TBrowserFrame
Left = 0
Height = 670
Top = 0
Width = 932
ClientHeight = 670
ClientWidth = 932
TabOrder = 0
DesignLeft = 318
DesignTop = 172
object NavControlPnl: TPanel
Left = 0
Height = 28
Top = 0
Width = 932
Align = alTop
BevelOuter = bvNone
ClientHeight = 28
ClientWidth = 932
Enabled = False
TabOrder = 0
object NavButtonPnl: TPanel
Left = 0
Height = 28
Top = 0
Width = 123
Align = alLeft
BevelOuter = bvNone
ClientHeight = 28
ClientWidth = 123
TabOrder = 0
object BackBtn: TButton
Left = 0
Height = 25
Top = 0
Width = 25
Caption = '3'
Font.CharSet = SYMBOL_CHARSET
Font.Color = clWindowText
Font.Height = -19
Font.Name = 'Webdings'
OnClick = BackBtnClick
ParentFont = False
TabOrder = 0
end
object ForwardBtn: TButton
Left = 30
Height = 25
Top = 0
Width = 25
Caption = '4'
Font.CharSet = SYMBOL_CHARSET
Font.Color = clWindowText
Font.Height = -19
Font.Name = 'Webdings'
OnClick = ForwardBtnClick
ParentFont = False
TabOrder = 1
end
object ReloadBtn: TButton
Left = 59
Height = 25
Top = 0
Width = 25
Caption = 'q'
Font.CharSet = SYMBOL_CHARSET
Font.Color = clWindowText
Font.Height = -19
Font.Name = 'Webdings'
OnClick = ReloadBtnClick
ParentFont = False
TabOrder = 2
end
object StopBtn: TButton
Left = 88
Height = 25
Top = 0
Width = 25
Caption = '='
Font.CharSet = SYMBOL_CHARSET
Font.Color = clWindowText
Font.Height = -19
Font.Name = 'Webdings'
OnClick = StopBtnClick
ParentFont = False
TabOrder = 3
end
end
object URLEditPnl: TPanel
Left = 123
Height = 28
Top = 0
Width = 774
Align = alClient
BevelOuter = bvNone
ClientHeight = 28
ClientWidth = 774
TabOrder = 1
object URLCbx: TComboBox
Left = 0
Height = 27
Top = 1
Width = 774
Anchors = [akTop, akLeft, akRight]
ItemHeight = 0
ItemIndex = 0
Items.Strings = (
'https://www.google.com'
'https://www.whatismybrowser.com/detect/what-http-headers-is-my-browser-sending'
'https://www.w3schools.com/js/tryit.asp?filename=tryjs_win_close'
'https://www.w3schools.com/js/tryit.asp?filename=tryjs_alert'
'https://www.w3schools.com/js/tryit.asp?filename=tryjs_loc_assign'
'https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_style_backgroundcolor'
'https://www.w3schools.com/html/html5_video.asp'
'http://www.adobe.com/software/flash/about/'
'http://isflashinstalled.com/'
'https://helpx.adobe.com/flash-player.html'
'https://www.ultrasounds.com/'
'https://www.whatismybrowser.com/detect/is-flash-installed'
'http://html5test.com/'
'https://webrtc.github.io/samples/src/content/devices/input-output/'
'https://test.webrtc.org/'
'https://www.w3schools.com/'
'http://webglsamples.org/'
'https://get.webgl.org/'
'https://www.briskbard.com'
'https://www.youtube.com'
'https://html5demos.com/drag/'
'https://developers.google.com/maps/documentation/javascript/examples/streetview-embed?hl=fr'
'https://www.w3schools.com/Tags/tryit.asp?filename=tryhtml_iframe_name'
'http://www-db.deis.unibo.it/courses/TW/DOCS/w3schools/html/tryit.asp-filename=tryhtml5_html_manifest.html'
'https://www.browserleaks.com/webrtc'
'https://frames-per-second.appspot.com/'
'chrome://version/'
'chrome://net-internals/'
'chrome://tracing/'
'chrome://appcache-internals/'
'chrome://blob-internals/'
'chrome://view-http-cache/'
'chrome://credits/'
'chrome://histograms/'
'chrome://media-internals/'
'chrome://kill'
'chrome://crash'
'chrome://hang'
'chrome://shorthang'
'chrome://gpuclean'
'chrome://gpucrash'
'chrome://gpuhang'
'chrome://extensions-support'
'chrome://process-internals'
)
TabOrder = 0
Text = 'https://www.google.com'
end
end
object ConfigPnl: TPanel
Left = 897
Height = 28
Top = 0
Width = 35
Align = alRight
BevelOuter = bvNone
ClientHeight = 28
ClientWidth = 35
TabOrder = 2
object GoBtn: TButton
Left = 5
Height = 25
Top = 0
Width = 25
Caption = '►'
Font.CharSet = ANSI_CHARSET
Font.Color = clWindowText
Font.Height = -17
Font.Name = 'Arial'
Font.Style = [fsBold]
OnClick = GoBtnClick
ParentFont = False
TabOrder = 0
end
end
end
object StatusBar1: TStatusBar
Left = 0
Height = 17
Top = 653
Width = 932
Panels = <
item
Width = 500
end>
SimplePanel = False
end
object CEFLinkedWindowParent1: TCEFLinkedWindowParent
Left = 0
Height = 625
Top = 28
Width = 932
Align = alClient
TabOrder = 2
OnEnter = CEFLinkedWindowParent1Enter
OnExit = CEFLinkedWindowParent1Exit
Chromium = Chromium1
end
object Chromium1: TChromium
OnLoadError = Chromium1LoadError
OnLoadingStateChange = Chromium1LoadingStateChange
OnGotFocus = Chromium1GotFocus
OnAddressChange = Chromium1AddressChange
OnTitleChange = Chromium1TitleChange
OnStatusMessage = Chromium1StatusMessage
OnBeforePopup = Chromium1BeforePopup
OnAfterCreated = Chromium1AfterCreated
OnBeforeClose = Chromium1BeforeClose
OnClose = Chromium1Close
OnOpenUrlFromTab = Chromium1OpenUrlFromTab
Left = 40
Top = 72
end
end

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// ************************************************************************
// ***************************** 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 uBrowserFrame;
{$mode objfpc}{$H+}
{$I cef.inc}
interface
uses
LCLIntf, LCLType, LMessages, Messages, SysUtils, Variants, SyncObjs, Classes,
Graphics, Controls, Forms, Dialogs, ExtCtrls, ComCtrls, StdCtrls,
uCEFWinControl, uCEFWindowParent, uCEFChromiumCore, uCEFChromium, uCEFTypes,
uCEFInterfaces, uCEFConstants, uCEFLinkedWindowParent, uCEFChromiumEvents;
type
TBrowserTitleEvent = procedure(Sender: TObject; const aTitle : string) of object;
{ TBrowserFrame }
TBrowserFrame = class(TFrame)
CEFLinkedWindowParent1: TCEFLinkedWindowParent;
NavControlPnl: TPanel;
NavButtonPnl: TPanel;
BackBtn: TButton;
ForwardBtn: TButton;
ReloadBtn: TButton;
StopBtn: TButton;
URLEditPnl: TPanel;
URLCbx: TComboBox;
ConfigPnl: TPanel;
GoBtn: TButton;
StatusBar1: TStatusBar;
Chromium1: TChromium;
procedure CEFLinkedWindowParent1Enter(Sender: TObject);
procedure CEFLinkedWindowParent1Exit(Sender: TObject);
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
procedure Chromium1AddressChange(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
procedure Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction: TCefCloseBrowserAction);
procedure Chromium1GotFocus(Sender: TObject; const browser: ICefBrowser);
procedure Chromium1LoadError(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; errorCode: Integer; const errorText, failedUrl: ustring);
procedure Chromium1LoadingStateChange(Sender: TObject; const browser: ICefBrowser; isLoading, canGoBack, canGoForward: Boolean);
procedure Chromium1StatusMessage(Sender: TObject; const browser: ICefBrowser; const value: ustring);
procedure Chromium1TitleChange(Sender: TObject; const browser: ICefBrowser; const title: ustring);
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, Result: Boolean);
procedure Chromium1OpenUrlFromTab(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const targetUrl: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; out Result: Boolean);
procedure BackBtnClick(Sender: TObject);
procedure ForwardBtnClick(Sender: TObject);
procedure ReloadBtnClick(Sender: TObject);
procedure StopBtnClick(Sender: TObject);
procedure GoBtnClick(Sender: TObject);
protected
FClosing : boolean; // Indicates that this frame is destroying the browser
FHomepage : string;
FOnBrowserDestroyed : TNotifyEvent;
FOnBrowserTitleChange : TBrowserTitleEvent;
FBrowserCS : TCriticalSection;
FBrowserAddress : string;
FBrowserIsLoading : boolean;
FBrowserCanGoBack : boolean;
FBrowserCanGoForward : boolean;
FBrowserStatusText : string;
FBrowserTitle : string;
procedure SetBrowserAddress(const aValue : string);
procedure SetBrowserIsLoading(aValue : boolean);
procedure SetBrowserCanGoBack(aValue : boolean);
procedure SetBrowserCanGoForward(aValue : boolean);
procedure SetBrowserStatusText(const aValue : string);
procedure SetBrowserTitle(const aValue : string);
function GetBrowserAddress : string;
function GetBrowserIsLoading : boolean;
function GetBrowserCanGoBack : boolean;
function GetBrowserCanGoForward : boolean;
function GetBrowserStatusText : string;
function GetBrowserTitle : string;
procedure BrowserCreatedMsg(Data: PtrInt);
procedure BrowserUpdateAddressMsg(Data: PtrInt);
procedure BrowserUpdateLoadingStateMsg(Data: PtrInt);
procedure BrowserUpdateStatusTextMsg(Data: PtrInt);
procedure BrowserUpdateTitleMsg(Data: PtrInt);
procedure SendCompMessage(aMsg : cardinal);
property BrowserAddress : string read GetBrowserAddress write SetBrowserAddress;
property BrowserIsLoading : boolean read GetBrowserIsLoading write SetBrowserIsLoading;
property BrowserCanGoBack : boolean read GetBrowserCanGoBack write SetBrowserCanGoBack;
property BrowserCanGoForward : boolean read GetBrowserCanGoForward write SetBrowserCanGoForward;
property BrowserStatusText : string read GetBrowserStatusText write SetBrowserStatusText;
property BrowserTitle : string read GetBrowserTitle write SetBrowserTitle;
public
constructor Create(AOwner : TComponent); override;
destructor Destroy; override;
procedure NotifyMoveOrResizeStarted;
procedure CreateBrowser;
procedure CloseBrowser;
property Closing : boolean read FClosing;
property Homepage : string read FHomepage write FHomepage;
property OnBrowserDestroyed : TNotifyEvent read FOnBrowserDestroyed write FOnBrowserDestroyed;
property OnBrowserTitleChange : TBrowserTitleEvent read FOnBrowserTitleChange write FOnBrowserTitleChange;
end;
implementation
{$R *.lfm}
const
CEF_UPDATEADDRESS = 301;
CEF_UPDATELOADINGSTATE = 302;
CEF_UPDATESTATUSTEXT = 303;
CEF_UPDATETITLE = 304;
constructor TBrowserFrame.Create(AOwner : TComponent);
begin
inherited Create(AOwner);
FClosing := False;
FHomepage := '';
FBrowserAddress := '';
FBrowserIsLoading := False;
FBrowserCanGoBack := False;
FBrowserCanGoForward := False;
FBrowserStatusText := '';
FBrowserTitle := '';
FOnBrowserDestroyed := nil;
FOnBrowserTitleChange := nil;
FBrowserCS := TCriticalSection.Create;
end;
destructor TBrowserFrame.Destroy;
begin
FBrowserCS.Free;
inherited Destroy;
end;
procedure TBrowserFrame.SetBrowserAddress(const aValue : string);
begin
FBrowserCS.Acquire;
FBrowserAddress := aValue;
FBrowserCS.Release;
end;
procedure TBrowserFrame.SetBrowserIsLoading(aValue : boolean);
begin
FBrowserCS.Acquire;
FBrowserIsLoading := aValue;
FBrowserCS.Release;
end;
procedure TBrowserFrame.SetBrowserCanGoBack(aValue : boolean);
begin
FBrowserCS.Acquire;
FBrowserCanGoBack := aValue;
FBrowserCS.Release;
end;
procedure TBrowserFrame.SetBrowserCanGoForward(aValue : boolean);
begin
FBrowserCS.Acquire;
FBrowserCanGoForward := aValue;
FBrowserCS.Release;
end;
procedure TBrowserFrame.SetBrowserStatusText(const aValue : string);
begin
FBrowserCS.Acquire;
FBrowserStatusText := aValue;
FBrowserCS.Release;
end;
procedure TBrowserFrame.SetBrowserTitle(const aValue : string);
begin
FBrowserCS.Acquire;
FBrowserTitle := aValue;
FBrowserCS.Release;
end;
function TBrowserFrame.GetBrowserAddress : string;
begin
FBrowserCS.Acquire;
Result := FBrowserAddress;
FBrowserCS.Release;
end;
function TBrowserFrame.GetBrowserIsLoading : boolean;
begin
FBrowserCS.Acquire;
Result := FBrowserIsLoading;
FBrowserCS.Release;
end;
function TBrowserFrame.GetBrowserCanGoBack : boolean;
begin
FBrowserCS.Acquire;
Result := FBrowserCanGoBack;
FBrowserCS.Release;
end;
function TBrowserFrame.GetBrowserCanGoForward : boolean;
begin
FBrowserCS.Acquire;
Result := FBrowserCanGoForward;
FBrowserCS.Release;
end;
function TBrowserFrame.GetBrowserStatusText : string;
begin
FBrowserCS.Acquire;
Result := FBrowserStatusText;
FBrowserCS.Release;
end;
function TBrowserFrame.GetBrowserTitle : string;
begin
FBrowserCS.Acquire;
Result := FBrowserTitle;
FBrowserCS.Release;
end;
procedure TBrowserFrame.NotifyMoveOrResizeStarted;
begin
Chromium1.NotifyMoveOrResizeStarted;
end;
procedure TBrowserFrame.ReloadBtnClick(Sender: TObject);
begin
Chromium1.Reload;
end;
procedure TBrowserFrame.StopBtnClick(Sender: TObject);
begin
Chromium1.StopLoad;
end;
procedure TBrowserFrame.CreateBrowser;
begin
Chromium1.DefaultURL := FHomepage;
Chromium1.CreateBrowser(CEFLinkedWindowParent1.Handle, CEFLinkedWindowParent1.BoundsRect);
end;
procedure TBrowserFrame.CloseBrowser;
begin
if not(FClosing) then
begin
FClosing := True;
NavControlPnl.Enabled := False;
Chromium1.CloseBrowser(True);
end;
end;
procedure TBrowserFrame.ForwardBtnClick(Sender: TObject);
begin
Chromium1.GoForward;
end;
procedure TBrowserFrame.GoBtnClick(Sender: TObject);
begin
Chromium1.LoadURL(UTF8Decode(URLCbx.Text));
end;
procedure TBrowserFrame.Chromium1AfterCreated(Sender: TObject;
const browser: ICefBrowser);
begin
SendCompMessage(CEF_AFTERCREATED);
end;
procedure TBrowserFrame.CEFLinkedWindowParent1Enter(Sender: TObject);
begin
if not(csDesigning in ComponentState) and
Chromium1.Initialized and
not(Chromium1.FrameIsFocused) then
Chromium1.SendFocusEvent(True);
end;
procedure TBrowserFrame.CEFLinkedWindowParent1Exit(Sender: TObject);
begin
if not(csDesigning in ComponentState) then
Chromium1.SendCaptureLostEvent;
end;
procedure TBrowserFrame.BackBtnClick(Sender: TObject);
begin
Chromium1.GoBack;
end;
procedure TBrowserFrame.Chromium1AddressChange(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
begin
BrowserAddress := url;
SendCompMessage(CEF_UPDATEADDRESS);
end;
procedure TBrowserFrame.Chromium1BeforeClose(Sender: TObject;
const browser: ICefBrowser);
begin
if assigned(FOnBrowserDestroyed) then FOnBrowserDestroyed(self);
end;
procedure TBrowserFrame.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, 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 TBrowserFrame.Chromium1Close(Sender: TObject;
const browser: ICefBrowser; var aAction: TCefCloseBrowserAction);
begin
// continue closing the browser
aAction := cbaClose;
end;
procedure TBrowserFrame.Chromium1GotFocus(Sender: TObject;
const browser: ICefBrowser);
begin
CEFLinkedWindowParent1.SetFocus;
end;
procedure TBrowserFrame.Chromium1LoadError(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; errorCode: Integer;
const errorText, failedUrl: ustring);
var
TempString : string;
begin
if (errorCode = ERR_ABORTED) then exit;
TempString := '<html><body bgcolor="white">' +
'<h2>Failed to load URL ' + failedUrl +
' with error ' + errorText +
' (' + inttostr(errorCode) + ').</h2></body></html>';
Chromium1.LoadString(UTF8Decode(TempString), frame);
end;
procedure TBrowserFrame.Chromium1LoadingStateChange(Sender: TObject;
const browser: ICefBrowser; isLoading, canGoBack, canGoForward: Boolean);
begin
BrowserIsLoading := isLoading;
BrowserCanGoBack := canGoBack;
BrowserCanGoForward := canGoForward;
SendCompMessage(CEF_UPDATELOADINGSTATE);
end;
procedure TBrowserFrame.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 TBrowserFrame.Chromium1StatusMessage(Sender: TObject;
const browser: ICefBrowser; const value: ustring);
begin
BrowserStatusText := value;
SendCompMessage(CEF_UPDATESTATUSTEXT);
end;
procedure TBrowserFrame.Chromium1TitleChange(Sender: TObject;
const browser: ICefBrowser; const title: ustring);
begin
if (length(title) > 0) then
BrowserTitle := title
else
BrowserTitle := Chromium1.DocumentURL;
SendCompMessage(CEF_UPDATETITLE);
end;
procedure TBrowserFrame.BrowserCreatedMsg(Data: PtrInt);
begin
CEFLinkedWindowParent1.UpdateSize;
NavControlPnl.Enabled := True;
end;
procedure TBrowserFrame.BrowserUpdateAddressMsg(Data: PtrInt);
var
TempURL : string;
begin
TempURL := BrowserAddress;
if (URLCbx.Items.IndexOf(TempURL) < 0) then URLCbx.Items.Add(TempURL);
URLCbx.Text := TempURL;
end;
procedure TBrowserFrame.BrowserUpdateLoadingStateMsg(Data: PtrInt);
begin
BackBtn.Enabled := BrowserCanGoBack;
ForwardBtn.Enabled := BrowserCanGoForward;
if BrowserIsLoading then
begin
ReloadBtn.Enabled := False;
StopBtn.Enabled := True;
end
else
begin
ReloadBtn.Enabled := True;
StopBtn.Enabled := False;
end;
end;
procedure TBrowserFrame.BrowserUpdateStatusTextMsg(Data: PtrInt);
begin
StatusBar1.Panels[0].Text := BrowserStatusText;
end;
procedure TBrowserFrame.BrowserUpdateTitleMsg(Data: PtrInt);
begin
if assigned(FOnBrowserTitleChange) then
FOnBrowserTitleChange(self, BrowserTitle);
end;
procedure TBrowserFrame.SendCompMessage(aMsg : cardinal);
begin
case aMsg of
CEF_AFTERCREATED : Application.QueueAsyncCall(@BrowserCreatedMsg, 0);
CEF_UPDATEADDRESS : Application.QueueAsyncCall(@BrowserUpdateAddressMsg, 0);
CEF_UPDATELOADINGSTATE : Application.QueueAsyncCall(@BrowserUpdateLoadingStateMsg, 0);
CEF_UPDATESTATUSTEXT : Application.QueueAsyncCall(@BrowserUpdateStatusTextMsg, 0);
CEF_UPDATETITLE : Application.QueueAsyncCall(@BrowserUpdateTitleMsg, 0);
end;
end;
end.

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// ************************************************************************
// ***************************** 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 uBrowserTab;
{$mode objfpc}{$H+}
{$I cef.inc}
interface
uses
LCLIntf, LCLType, LMessages, Classes, Messages, ComCtrls, Controls,
Forms,
uBrowserFrame;
type
TBrowserTab = class(TTabSheet)
protected
FBrowserFrame : TBrowserFrame;
FTabID : cardinal;
function GetParentForm : TCustomForm;
procedure SendFormMessage(aMsg : cardinal; aData : PtrInt = 0);
procedure BrowserFrame_OnBrowserDestroyed(Sender: TObject);
procedure BrowserFrame_OnBrowserTitleChange(Sender: TObject; const aTitle : string);
property ParentForm : TCustomForm read GetParentForm;
public
constructor Create(AOwner: TComponent; aTabID : cardinal; const aCaption : string); reintroduce;
procedure NotifyMoveOrResizeStarted;
procedure CreateBrowser(const aHomepage : string);
procedure CloseBrowser;
property TabID : cardinal read FTabID;
end;
implementation
uses
uMainForm;
constructor TBrowserTab.Create(AOwner: TComponent; aTabID : cardinal; const aCaption : string);
begin
inherited Create(AOwner);
FTabID := aTabID;
Caption := aCaption;
FBrowserFrame := nil;
end;
function TBrowserTab.GetParentForm : TCustomForm;
var
TempParent : TWinControl;
begin
TempParent := Parent;
while (TempParent <> nil) and not(TempParent is TCustomForm) do
TempParent := TempParent.Parent;
if (TempParent <> nil) and (TempParent is TCustomForm) then
Result := TCustomForm(TempParent)
else
Result := nil;
end;
procedure TBrowserTab.SendFormMessage(aMsg : cardinal; aData : PtrInt);
var
TempForm : TCustomForm;
begin
TempForm := ParentForm;
if (TempForm <> nil) and (TempForm is TMainForm) then
TMainForm(TempForm).SendCompMessage(aMsg, aData);
end;
procedure TBrowserTab.NotifyMoveOrResizeStarted;
begin
FBrowserFrame.NotifyMoveOrResizeStarted;
end;
procedure TBrowserTab.CreateBrowser(const aHomepage : string);
begin
FBrowserFrame := TBrowserFrame.Create(self);
FBrowserFrame.Parent := self;
FBrowserFrame.Align := alClient;
FBrowserFrame.Visible := True;
FBrowserFrame.Homepage := aHomepage;
FBrowserFrame.OnBrowserDestroyed := @BrowserFrame_OnBrowserDestroyed;
FBrowserFrame.OnBrowserTitleChange := @BrowserFrame_OnBrowserTitleChange;
FBrowserFrame.CreateBrowser;
end;
procedure TBrowserTab.CloseBrowser;
begin
if (FBrowserFrame <> nil) then FBrowserFrame.CloseBrowser;
end;
procedure TBrowserTab.BrowserFrame_OnBrowserDestroyed(Sender: TObject);
begin
// This event is executed in a CEF thread so we have to use
// Application.QueueAsyncCall to destroy the tab in the main application
// thread.
SendFormMessage(CEF_DESTROYTAB, PtrInt(TabID));
end;
procedure TBrowserTab.BrowserFrame_OnBrowserTitleChange(Sender: TObject; const aTitle : string);
begin
Caption := aTitle;
end;
end.

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object MainForm: TMainForm
Left = 357
Height = 704
Top = 89
Width = 991
Caption = 'Initializing. Please, wait...'
ClientHeight = 704
ClientWidth = 991
Color = clBtnFace
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Tahoma'
OnActivate = FormActivate
OnCloseQuery = FormCloseQuery
OnCreate = FormCreate
Position = poScreenCenter
LCLVersion = '2.0.10.0'
object BrowserPageCtrl: TPageControl
Left = 34
Height = 704
Top = 0
Width = 957
Align = alClient
TabOrder = 0
end
object ButtonPnl: TPanel
Left = 0
Height = 704
Top = 0
Width = 34
Align = alLeft
BevelOuter = bvNone
ClientHeight = 704
ClientWidth = 34
Enabled = False
TabOrder = 1
object AddTabBtn: TSpeedButton
Left = 4
Height = 26
Top = 4
Width = 26
Caption = '+'
Font.Color = clWindowText
Font.Height = -24
Font.Name = 'Arial Black'
OnClick = AddTabBtnClick
ParentFont = False
end
object RemoveTabBtn: TSpeedButton
Left = 4
Height = 26
Top = 33
Width = 26
Caption = '−'
Font.Color = clWindowText
Font.Height = -24
Font.Name = 'Arial Black'
OnClick = RemoveTabBtnClick
ParentFont = False
end
end
end

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// ************************************************************************
// ***************************** 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 uMainForm;
{$mode objfpc}{$H+}
{$I cef.inc}
interface
uses
LCLIntf, LCLType, LMessages, Messages, SysUtils, Variants, Classes, Graphics,
Controls, Forms, Dialogs, ComCtrls, ToolWin, Buttons, ExtCtrls,
uCEFApplication, uCEFTypes, uCEFConstants;
const
CEF_INITIALIZED = $100;
CEF_DESTROYTAB = $101;
HOMEPAGE_URL = 'https://www.google.com';
DEFAULT_TAB_CAPTION = 'New tab';
type
{ TMainForm }
TMainForm = class(TForm)
BrowserPageCtrl: TPageControl;
ButtonPnl: TPanel;
AddTabBtn: TSpeedButton;
RemoveTabBtn: TSpeedButton;
procedure AddTabBtnClick(Sender: TObject);
procedure RemoveTabBtnClick(Sender: TObject);
procedure FormActivate(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
protected
// Variables to control when can we destroy the form safely
FCanClose : boolean;
FClosing : boolean;
FLastTabID : cardinal; // Used by NextTabID to generate unique tab IDs
function GetNextTabID : cardinal;
procedure EnableButtonPnl;
function CloseAllTabs : boolean;
procedure CloseTab(aIndex : integer);
procedure NotifyMoveOrResizeStarted;
procedure BrowserInitializedMsg(Data: PtrInt);
procedure BrowserDestroyedTabMsg(Data: PtrInt);
procedure WMMove(var aMessage: TLMMove); message LM_MOVE;
procedure WMSize(var aMessage: TLMSize); message LM_SIZE;
procedure WMWindowPosChanged(var aMessage: TLMWindowPosChanged); message LM_WINDOWPOSCHANGED;
property NextTabID : cardinal read GetNextTabID;
public
procedure SendCompMessage(aMsg : cardinal; aData : PtrInt = 0);
end;
var
MainForm: TMainForm = nil;
procedure CreateGlobalCEFApp;
implementation
{$R *.lfm}
uses
uBrowserTab;
// This demo shows how to use a TPageControl with TFrames that include
// CEF4Delphi browsers.
// Instead of a regular TTabSheet we use a custom TBrowserTab class that
// inherits from TTabSheet and instead of a regular TFrame we use a custom
// TBrowserFrame class that inherits from TFrame.
// To create a new tab you need to call TBrowserTab.CreateBrowser in the last
// step to create all the browser components and initialize the browser.
// To close a tab you have to call TBrowserTab.CloseBrowser and wait for a
// CEF_DESTROYTAB message with the TBrowserTab.TabID value.
// Then you find the tab with that unique TabID and free it.
// Most of the TChromium events store the parameter values in a set of class
// fields which are protected by a critial section and then they call
// TBrowserFrame.SendCompMessage to execute the GUI code in the main thread.
// TBrowserFrame has all the usual code to close CEF4Delphi browsers following
// a similar destruction sequence than the MiniBrowser demo :
//
// 1. TBrowserTab.CloseBrowser calls TChromium.CloseBrowser which triggers the
// TChromium.OnClose event.
// 2. TChromium.OnClose sets aAction to cbaClose which trigges the
// TChromium.OnBeforeClose event.
// 3. TChromium.OnBeforeClose executes the TBrowserFrame.OnBrowserDestroyed
// event which will be used in TBrowserTab to send a CEF_DESTROYTAB message
// to the main form to free the tab.
// To close safely this demo you must close all the browser tabs first following
// this steps :
//
// 1. FormCloseQuery sets CanClose to FALSE and calls CloseAllTabs and FClosing
// is set to TRUE.
// 2. Each tab will send a CEF_DESTROYTAB message to free that tab.
// 3. When TPageControl has no tabs then we can set FCanClose to TRUE and
// close the main form.
procedure GlobalCEFApp_OnContextInitialized;
begin
if (MainForm <> nil) and MainForm.Showing and MainForm.Focused then
MainForm.SendCompMessage(CEF_INITIALIZED);
end;
procedure CreateGlobalCEFApp;
begin
GlobalCEFApp := TCefApplication.Create;
GlobalCEFApp.OnContextInitialized := @GlobalCEFApp_OnContextInitialized;
end;
procedure TMainForm.EnableButtonPnl;
begin
if not(ButtonPnl.Enabled) then
begin
ButtonPnl.Enabled := True;
Caption := 'Tabbed Browser 2';
cursor := crDefault;
if (BrowserPageCtrl.PageCount = 0) then AddTabBtn.Click;
end;
end;
function TMainForm.GetNextTabID : cardinal;
begin
inc(FLastTabID);
Result := FLastTabID;
end;
procedure TMainForm.AddTabBtnClick(Sender: TObject);
var
TempNewTab : TBrowserTab;
begin
TempNewTab := TBrowserTab.Create(self, NextTabID, DEFAULT_TAB_CAPTION);
TempNewTab.PageControl := BrowserPageCtrl;
BrowserPageCtrl.ActivePageIndex := pred(BrowserPageCtrl.PageCount);
TempNewTab.CreateBrowser(HOMEPAGE_URL);
end;
procedure TMainForm.FormActivate(Sender: TObject);
begin
if (GlobalCEFApp <> nil) and GlobalCEFApp.GlobalContextInitialized then
EnableButtonPnl;
end;
procedure TMainForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
CanClose := FCanClose;
if not(FClosing) then
begin
FClosing := True;
ButtonPnl.Enabled := False;
if not(CloseAllTabs) then
begin
FCanClose := True;
CanClose := True;
end;
end;
end;
procedure TMainForm.FormCreate(Sender: TObject);
begin
FCanClose := False;
FClosing := False;
FLastTabID := 0;
end;
procedure TMainForm.RemoveTabBtnClick(Sender: TObject);
begin
CloseTab(BrowserPageCtrl.ActivePageIndex);
end;
function TMainForm.CloseAllTabs : boolean;
var
i : integer;
begin
Result := False;
i := pred(BrowserPageCtrl.PageCount);
while (i >= 0) do
begin
TBrowserTab(BrowserPageCtrl.Pages[i]).CloseBrowser;
Result := True;
dec(i);
end;
end;
procedure TMainForm.CloseTab(aIndex : integer);
begin
if (aIndex >= 0) and (aIndex < BrowserPageCtrl.PageCount) then
TBrowserTab(BrowserPageCtrl.Pages[aIndex]).CloseBrowser;
end;
procedure TMainForm.NotifyMoveOrResizeStarted;
var
i : integer;
begin
i := 0;
while (i < BrowserPageCtrl.PageCount) do
begin
TBrowserTab(BrowserPageCtrl.Pages[i]).NotifyMoveOrResizeStarted;
inc(i);
end;
end;
procedure TMainForm.WMMove(var aMessage : TLMMove);
begin
inherited;
NotifyMoveOrResizeStarted;
end;
procedure TMainForm.WMSize(var aMessage: TLMSize);
begin
inherited;
NotifyMoveOrResizeStarted;
end;
procedure TMainForm.WMWindowPosChanged(var aMessage: TLMWindowPosChanged);
begin
inherited;
NotifyMoveOrResizeStarted;
end;
procedure TMainForm.BrowserInitializedMsg(Data: PtrInt);
begin
EnableButtonPnl;
end;
procedure TMainForm.BrowserDestroyedTabMsg(Data: PtrInt);
var
i : integer;
TempTab : TBrowserTab;
begin
i := 0;
while (i < BrowserPageCtrl.PageCount) do
begin
TempTab := TBrowserTab(BrowserPageCtrl.Pages[i]);
if (TempTab.TabID = cardinal(Data)) then
begin
TempTab.Free;
break;
end
else
inc(i);
end;
if FClosing and (BrowserPageCtrl.PageCount = 0) then
begin
FCanClose := True;
close;
end;
end;
procedure TMainForm.SendCompMessage(aMsg : cardinal; aData : PtrInt);
begin
case aMsg of
CEF_INITIALIZED : Application.QueueAsyncCall(@BrowserInitializedMsg, aData);
CEF_DESTROYTAB : Application.QueueAsyncCall(@BrowserDestroyedTabMsg, aData);
end;
end;
end.