mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
bb26a4cf18
Added the OSRExternalMessagePump2 demo for Lazarus in Linux Added the SimpleOSRBrowser2 demo for Lazarus in Windows
1037 lines
33 KiB
ObjectPascal
1037 lines
33 KiB
ObjectPascal
// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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// Copyright © 2022 Salvador Diaz Fau. All rights reserved.
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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unit usimplelazosrbrowser2;
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{$MODE OBJFPC}{$H+}
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interface
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uses
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Windows, LCLIntf, LCLType, LMessages, Messages, SysUtils, Variants, Classes,
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Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls, Types,
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OpenGLContext, GL, GLext,
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uCEFChromium, uCEFTypes, uCEFInterfaces, uCEFConstants;
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type
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{ TForm1 }
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TForm1 = class(TForm)
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NavControlPnl: TPanel;
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chrmosr: TChromium;
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ComboBox1: TComboBox;
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OpenGLControl1: TOpenGLControl;
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Panel2: TPanel;
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GoBtn: TButton;
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SaveDialog1: TSaveDialog;
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Timer1: TTimer;
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procedure GoBtnClick(Sender: TObject);
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procedure GoBtnEnter(Sender: TObject);
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procedure OpenGLControl1Enter(Sender: TObject);
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procedure OpenGLControl1Exit(Sender: TObject);
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procedure OpenGLControl1KeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
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procedure OpenGLControl1KeyPress(Sender: TObject; var Key: char);
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procedure OpenGLControl1KeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
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procedure OpenGLControl1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
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procedure OpenGLControl1MouseLeave(Sender: TObject);
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procedure OpenGLControl1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
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procedure OpenGLControl1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
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procedure OpenGLControl1MouseWheel(Sender: TObject; Shift: TShiftState; WheelDelta: Integer; MousePos: TPoint; var Handled: Boolean);
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procedure OpenGLControl1Paint(Sender: TObject);
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procedure OpenGLControl1Resize(Sender: TObject);
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procedure OpenGLControl1Click(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure FormDestroy(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure FormHide(Sender: TObject);
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procedure FormAfterMonitorDpiChanged(Sender: TObject; OldDPI, NewDPI: Integer);
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procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
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procedure chrmosrPaint(Sender: TObject; const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; aWidth, aHeight: Integer);
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procedure chrmosrCursorChange(Sender: TObject; const browser: ICefBrowser; cursor_: TCefCursorHandle; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo; var aResult : boolean);
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procedure chrmosrGetViewRect(Sender: TObject; const browser: ICefBrowser; var rect: TCefRect);
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procedure chrmosrGetScreenPoint(Sender: TObject; const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer; out Result: Boolean);
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procedure chrmosrGetScreenInfo(Sender: TObject; const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out Result: Boolean);
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procedure chrmosrPopupShow(Sender: TObject; const browser: ICefBrowser; aShow: Boolean);
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procedure chrmosrPopupSize(Sender: TObject; const browser: ICefBrowser; const rect: PCefRect);
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procedure chrmosrAfterCreated(Sender: TObject; const browser: ICefBrowser);
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procedure chrmosrTooltip(Sender: TObject; const browser: ICefBrowser; var aText: ustring; out Result: Boolean);
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procedure chrmosrBeforePopup(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);
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procedure chrmosrBeforeClose(Sender: TObject; const browser: ICefBrowser);
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procedure Timer1Timer(Sender: TObject);
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procedure ComboBox1Enter(Sender: TObject);
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protected
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FPopUpRect : TRect;
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FShowPopUp : boolean;
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FCanClose : boolean;
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FClosing : boolean;
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FLastClickCount : integer;
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FLastClickTime : integer;
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FLastClickPoint : TPoint;
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FLastClickButton : TMouseButton;
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FGLInitialized : boolean;
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FTextureID : GLuint;
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FTextureWidth : integer;
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FTextureHeight : integer;
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FUpdateRect : TCefRect;
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function InitializeOpenGL : boolean;
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procedure VerifyOpenGLErrors;
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function getModifiers(Shift: TShiftState): TCefEventFlags;
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function GetButton(Button: TMouseButton): TCefMouseButtonType;
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procedure InitializeLastClick;
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function CancelPreviousClick(x, y : integer; var aCurrentTime : integer) : boolean;
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procedure WMMove(var aMessage : TWMMove); message WM_MOVE;
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procedure WMMoving(var aMessage : TMessage); message WM_MOVING;
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procedure WMCaptureChanged(var aMessage : TMessage); message WM_CAPTURECHANGED;
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procedure WMCancelMode(var aMessage : TMessage); message WM_CANCELMODE;
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procedure WMEnterMenuLoop(var aMessage: TMessage); message WM_ENTERMENULOOP;
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procedure WMExitMenuLoop(var aMessage: TMessage); message WM_EXITMENULOOP;
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procedure WMSysChar(var aMessage: TMessage); message WM_SYSCHAR;
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procedure WMSysKeyDown(var aMessage: TMessage); message WM_SYSKEYDOWN;
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procedure WMSysKeyUp(var aMessage: TMessage); message WM_SYSKEYUP;
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procedure WMDpiChanged(var Message: TMessage); message WM_DPICHANGED;
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procedure BrowserCreatedMsg(var aMessage : TMessage); message CEF_AFTERCREATED;
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public
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{ Public declarations }
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end;
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var
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Form1: TForm1;
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procedure CreateGlobalCEFApp;
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implementation
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{$R *.lfm}
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uses
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uCEFMiscFunctions, uCEFApplication, uCEFWorkScheduler;
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// This demo uses a CEF browser in "off-screen rendering" mode (a.k.a OSR mode)
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// but instead of copying the raw bitmap information it uses an OpenGL texture
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// to accelerate drawing the contents.
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// It's recommemded to avoid using OpenGL in multiple threads so this demo uses
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// a external message pump to execute all CEF events in the main appliction
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// thread.
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// This demo uses a TOpenGLControl control from the "LazOpenGLContext" package.
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// Follow these steps to install the LazOpenGLContext package in Lazarus:
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// 1.- Click on the "Package" option of the main Lazarus menu.
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// 2.- Select the "Install/Uninstall packages" option.
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// 3.- Choose "LazOpenGLContext" on the right side panel.
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// 4.- Click on the "Install selection" button.
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// 5.- Click on the "Save and rebuild IDE" button.
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// 6.- Click on the "Continue" button.
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// 7.- Wait a moment until Lazarus restarts.
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// The code in this demo is a translation of the official CEF sample application
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// called "cefsimple" and it also copies a few code fragments from the OSRDemo
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// in the fpCEF3 project.
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// In case you run this demo inside a virtual machine or using an unsupported
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// graphics card you may get a white screen and/or OpenGL errors.
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// This is the destruction sequence in OSR mode :
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// 1- FormCloseQuery sets CanClose to the initial FCanClose value (False) and
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// calls chrmosr.CloseBrowser(True) which will destroy the internal browser
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// immediately.
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// 2- chrmosr.OnBeforeClose is triggered because the internal browser was
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// destroyed. FCanClose is set to True and we can close the form safely.
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procedure GlobalCEFApp_OnScheduleMessagePumpWork(const aDelayMS : int64);
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begin
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if (GlobalCEFWorkScheduler <> nil) then GlobalCEFWorkScheduler.ScheduleMessagePumpWork(aDelayMS);
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end;
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procedure CreateGlobalCEFApp;
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begin
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// TCEFWorkScheduler will call cef_do_message_loop_work when
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// it's told in the GlobalCEFApp.OnScheduleMessagePumpWork event.
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// GlobalCEFWorkScheduler needs to be created before the
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// GlobalCEFApp.StartMainProcess call.
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GlobalCEFWorkScheduler := TCEFWorkScheduler.Create(nil);
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GlobalCEFApp := TCefApplication.Create;
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GlobalCEFApp.WindowlessRenderingEnabled := True;
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GlobalCEFApp.EnableHighDPISupport := True;
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//GlobalCEFApp.EnableGPU := True;
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GlobalCEFApp.ExternalMessagePump := True;
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GlobalCEFApp.MultiThreadedMessageLoop := False;
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GlobalCEFApp.OnScheduleMessagePumpWork := @GlobalCEFApp_OnScheduleMessagePumpWork;
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end;
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procedure TForm1.GoBtnClick(Sender: TObject);
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begin
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chrmosr.LoadURL(UTF8Decode(ComboBox1.Text));
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end;
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procedure TForm1.GoBtnEnter(Sender: TObject);
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begin
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chrmosr.SetFocus(False);
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end;
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procedure TForm1.OpenGLControl1Click(Sender: TObject);
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begin
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OpenGLControl1.SetFocus;
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end;
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procedure TForm1.OpenGLControl1Enter(Sender: TObject);
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begin
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chrmosr.SetFocus(True);
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end;
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procedure TForm1.OpenGLControl1Exit(Sender: TObject);
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begin
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chrmosr.SetFocus(False);
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end;
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procedure TForm1.OpenGLControl1KeyDown(Sender: TObject; var Key: Word;
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Shift: TShiftState);
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var
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TempKeyEvent : TCefKeyEvent;
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begin
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if (Key <> 0) and (chrmosr <> nil) then
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begin
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TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN;
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TempKeyEvent.modifiers := getModifiers(Shift);
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TempKeyEvent.windows_key_code := Key;
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TempKeyEvent.native_key_code := 0;
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TempKeyEvent.is_system_key := ord(False);
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TempKeyEvent.character := #0;
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TempKeyEvent.unmodified_character := #0;
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TempKeyEvent.focus_on_editable_field := ord(False);
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chrmosr.SendKeyEvent(@TempKeyEvent);
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if (Key in [VK_LEFT, VK_RIGHT, VK_UP, VK_DOWN, VK_TAB]) then Key := 0;
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end;
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end;
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procedure TForm1.OpenGLControl1KeyPress(Sender: TObject; var Key: char);
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var
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TempKeyEvent : TCefKeyEvent;
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begin
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TempKeyEvent.kind := KEYEVENT_CHAR;
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TempKeyEvent.modifiers := GetCefKeyboardModifiers(WParam(Key), 0);
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TempKeyEvent.windows_key_code := Integer(Key);
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TempKeyEvent.native_key_code := 0;
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TempKeyEvent.is_system_key := ord(False);
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TempKeyEvent.character := #0;
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TempKeyEvent.unmodified_character := #0;
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TempKeyEvent.focus_on_editable_field := ord(False);
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chrmosr.SendKeyEvent(@TempKeyEvent);
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end;
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procedure TForm1.OpenGLControl1KeyUp(Sender: TObject; var Key: Word;
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Shift: TShiftState);
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var
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TempKeyEvent : TCefKeyEvent;
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begin
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if (Key <> 0) and (chrmosr <> nil) then
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begin
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TempKeyEvent.kind := KEYEVENT_KEYUP;
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TempKeyEvent.modifiers := getModifiers(Shift);
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TempKeyEvent.windows_key_code := Key;
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TempKeyEvent.native_key_code := 0;
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TempKeyEvent.is_system_key := ord(False);
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TempKeyEvent.character := #0;
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TempKeyEvent.unmodified_character := #0;
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TempKeyEvent.focus_on_editable_field := ord(False);
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chrmosr.SendKeyEvent(@TempKeyEvent);
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end;
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end;
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procedure TForm1.OpenGLControl1MouseDown(Sender: TObject; Button: TMouseButton;
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Shift: TShiftState; X, Y: Integer);
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var
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TempEvent : TCefMouseEvent;
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TempTime : integer;
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begin
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OpenGLControl1.SetFocus;
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if not(CancelPreviousClick(x, y, TempTime)) and (Button = FLastClickButton) then
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inc(FLastClickCount)
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else
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begin
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FLastClickPoint.x := x;
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FLastClickPoint.y := y;
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FLastClickCount := 1;
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end;
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FLastClickTime := TempTime;
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FLastClickButton := Button;
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TempEvent.x := X;
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TempEvent.y := Y;
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TempEvent.modifiers := getModifiers(Shift);
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DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
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chrmosr.SendMouseClickEvent(@TempEvent, GetButton(Button), False, FLastClickCount);
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end;
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procedure TForm1.OpenGLControl1MouseLeave(Sender: TObject);
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var
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TempEvent : TCefMouseEvent;
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TempPoint : TPoint;
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TempTime : integer;
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begin
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GetCursorPos(TempPoint);
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TempPoint := OpenGLControl1.ScreenToclient(TempPoint);
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if CancelPreviousClick(TempPoint.x, TempPoint.y, TempTime) then InitializeLastClick;
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TempEvent.x := TempPoint.x;
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TempEvent.y := TempPoint.y;
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TempEvent.modifiers := GetCefMouseModifiers;
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DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
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chrmosr.SendMouseMoveEvent(@TempEvent, True);
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end;
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procedure TForm1.OpenGLControl1MouseMove(Sender: TObject; Shift: TShiftState;
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X, Y: Integer);
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var
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TempEvent : TCefMouseEvent;
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TempTime : integer;
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begin
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if CancelPreviousClick(x, y, TempTime) then InitializeLastClick;
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TempEvent.x := x;
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TempEvent.y := y;
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TempEvent.modifiers := getModifiers(Shift);
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DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
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chrmosr.SendMouseMoveEvent(@TempEvent, False);
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end;
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procedure TForm1.OpenGLControl1MouseUp(Sender: TObject; Button: TMouseButton;
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Shift: TShiftState; X, Y: Integer);
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var
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TempEvent : TCefMouseEvent;
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begin
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TempEvent.x := X;
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TempEvent.y := Y;
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TempEvent.modifiers := getModifiers(Shift);
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DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
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chrmosr.SendMouseClickEvent(@TempEvent, GetButton(Button), True, FLastClickCount);
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end;
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procedure TForm1.OpenGLControl1MouseWheel(Sender: TObject; Shift: TShiftState;
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WheelDelta: Integer; MousePos: TPoint; var Handled: Boolean);
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var
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TempEvent : TCefMouseEvent;
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begin
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TempEvent.x := MousePos.x;
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TempEvent.y := MousePos.y;
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TempEvent.modifiers := getModifiers(Shift);
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DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
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if CefIsKeyDown(VK_SHIFT) then
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chrmosr.SendMouseWheelEvent(@TempEvent, WheelDelta, 0)
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else
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chrmosr.SendMouseWheelEvent(@TempEvent, 0, WheelDelta);
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end;
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procedure TForm1.VerifyOpenGLErrors;
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Var
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TempError : GLenum;
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begin
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TempError := glGetError();
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if (TempError <> GL_NO_ERROR) then
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OutputDebugString(PAnsiChar('OpenGL error: 0x' + IntToHex(TempError, 8) + chr(0)));
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end;
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procedure TForm1.OpenGLControl1Paint(Sender: TObject);
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Type
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TVertex = packed record
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tu, tv: Single;
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x, y, z: Single;
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end;
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Const
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Vertices : array[0..3] of TVertex = (
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(tu: 0.0; tv: 1.0; x: -1.0; y: -1.0; z: 0.0),
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(tu: 1.0; tv: 1.0; x: 1.0; y: -1.0; z: 0.0),
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(tu: 1.0; tv: 0.0; x: 1.0; y: 1.0; z: 0.0),
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(tu: 0.0; tv: 0.0; x: -1.0; y: 1.0; z: 0.0)
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);
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begin
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if (FTextureWidth = 0) or (FTextureHeight = 0) or not(FGLInitialized) then exit;
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//if not(FGLInitialized) then exit; // *****
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glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
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VerifyOpenGLErrors;
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glMatrixMode(GL_MODELVIEW);
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VerifyOpenGLErrors;
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glLoadIdentity();
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VerifyOpenGLErrors;
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// Match GL units to screen coordinates.
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glViewport(0, 0, FTextureWidth, FTextureHeight);
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//glViewport(0, 0, OpenGLControl1.Width, OpenGLControl1.Height); // *****
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VerifyOpenGLErrors;
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glMatrixMode(GL_PROJECTION);
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VerifyOpenGLErrors;
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glLoadIdentity();
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VerifyOpenGLErrors;
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// Draw the background gradient.
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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VerifyOpenGLErrors;
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// Don't check for errors until glEnd().
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glBegin(GL_QUADS);
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glColor4f(1.0, 0.0, 0.0, 1.0); // red
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glVertex2f(-1.0, -1.0);
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glVertex2f(1.0, -1.0);
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glColor4f(0.0, 0.0, 1.0, 1.0); // blue
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glVertex2f(1.0, 1.0);
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glVertex2f(-1.0, 1.0);
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glEnd();
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VerifyOpenGLErrors;
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glPopAttrib();
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VerifyOpenGLErrors;
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// ***** vvvv
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// alpha blending style: texture values have premultiplied alpha
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//glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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// enable alpha blending
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//glEnable(GL_BLEND);
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// ***** ^^^^
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// Enable 2D textures.
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glEnable(GL_TEXTURE_2D);
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VerifyOpenGLErrors;
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// Draw the facets with the texture.
|
|
glBindTexture(GL_TEXTURE_2D, FTextureID);
|
|
VerifyOpenGLErrors;
|
|
|
|
glInterleavedArrays(GL_T2F_V3F, 0, @Vertices);
|
|
VerifyOpenGLErrors;
|
|
|
|
glDrawArrays(GL_QUADS, 0, 4);
|
|
VerifyOpenGLErrors;
|
|
|
|
// Disable 2D textures.
|
|
glDisable(GL_TEXTURE_2D);
|
|
VerifyOpenGLErrors;
|
|
|
|
// ***** vvvv
|
|
// disable alpha blending
|
|
//glDisable(GL_BLEND);
|
|
// ***** ^^^^
|
|
|
|
OpenGLControl1.SwapBuffers;
|
|
end;
|
|
|
|
procedure TForm1.OpenGLControl1Resize(Sender: TObject);
|
|
begin
|
|
chrmosr.WasResized;
|
|
end;
|
|
|
|
procedure TForm1.chrmosrAfterCreated(Sender: TObject; const browser: ICefBrowser);
|
|
begin
|
|
PostMessage(Handle, CEF_AFTERCREATED, 0, 0);
|
|
end;
|
|
|
|
procedure TForm1.chrmosrBeforeClose(Sender: TObject; const browser: ICefBrowser);
|
|
begin
|
|
FCanClose := True;
|
|
PostMessage(Handle, WM_CLOSE, 0, 0);
|
|
end;
|
|
|
|
procedure TForm1.chrmosrBeforePopup(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.chrmosrCursorChange(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
cursor_ : TCefCursorHandle;
|
|
cursorType : TCefCursorType;
|
|
const customCursorInfo : PCefCursorInfo;
|
|
var aResult : boolean);
|
|
begin
|
|
OpenGLControl1.Cursor := CefCursorToWindowsCursor(cursorType);
|
|
aResult := True;
|
|
end;
|
|
|
|
procedure TForm1.chrmosrGetScreenInfo(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
var screenInfo : TCefScreenInfo;
|
|
out Result : Boolean);
|
|
var
|
|
TempRect : TCEFRect;
|
|
TempScale : single;
|
|
begin
|
|
TempScale := GlobalCEFApp.DeviceScaleFactor;
|
|
TempRect.x := 0;
|
|
TempRect.y := 0;
|
|
TempRect.width := DeviceToLogical(OpenGLControl1.Width, TempScale);
|
|
TempRect.height := DeviceToLogical(OpenGLControl1.Height, TempScale);
|
|
|
|
screenInfo.device_scale_factor := TempScale;
|
|
screenInfo.depth := 0;
|
|
screenInfo.depth_per_component := 0;
|
|
screenInfo.is_monochrome := Ord(False);
|
|
screenInfo.rect := TempRect;
|
|
screenInfo.available_rect := TempRect;
|
|
|
|
Result := True;
|
|
end;
|
|
|
|
procedure TForm1.chrmosrGetScreenPoint(Sender: TObject;
|
|
const browser: ICefBrowser; viewX, viewY: Integer; var screenX,
|
|
screenY: Integer; out Result: Boolean);
|
|
var
|
|
TempScreenPt, TempViewPt : TPoint;
|
|
TempScale : single;
|
|
begin
|
|
TempScale := GlobalCEFApp.DeviceScaleFactor;
|
|
TempViewPt.x := LogicalToDevice(viewX, TempScale);
|
|
TempViewPt.y := LogicalToDevice(viewY, TempScale);
|
|
TempScreenPt := OpenGLControl1.ClientToScreen(TempViewPt);
|
|
screenX := TempScreenPt.x;
|
|
screenY := TempScreenPt.y;
|
|
Result := True;
|
|
end;
|
|
|
|
procedure TForm1.chrmosrGetViewRect(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
var rect : TCefRect);
|
|
var
|
|
TempScale : single;
|
|
begin
|
|
TempScale := GlobalCEFApp.DeviceScaleFactor;
|
|
rect.x := 0;
|
|
rect.y := 0;
|
|
rect.width := DeviceToLogical(OpenGLControl1.Width, TempScale);
|
|
rect.height := DeviceToLogical(OpenGLControl1.Height, TempScale);
|
|
end;
|
|
|
|
procedure TForm1.chrmosrPaint(Sender: TObject; const browser: ICefBrowser;
|
|
kind: TCefPaintElementType; dirtyRectsCount: NativeUInt;
|
|
const dirtyRects: PCefRectArray; const buffer: Pointer; aWidth,
|
|
aHeight: Integer);
|
|
Var
|
|
TempRect : TCefRect;
|
|
i, TempOldWidth, TempOldHeight, TempSkipPixels, TempSkipRows, x, y, w, h : integer;
|
|
begin
|
|
if not(InitializeOpenGL) then exit;
|
|
|
|
// Enable 2D textures.
|
|
glEnable(GL_TEXTURE_2D);
|
|
VerifyOpenGLErrors;
|
|
|
|
glBindTexture(GL_TEXTURE_2D, FTextureID);
|
|
VerifyOpenGLErrors;
|
|
|
|
case kind of
|
|
PET_VIEW :
|
|
begin
|
|
TempOldWidth := FTextureWidth;
|
|
TempOldHeight := FTextureHeight;
|
|
FTextureWidth := aWidth;
|
|
FTextureHeight := aHeight;
|
|
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH, FTextureWidth);
|
|
VerifyOpenGLErrors;
|
|
|
|
If (FTextureWidth <> TempOldWidth) or
|
|
(FTextureHeight <> TempOldHeight) or
|
|
((dirtyRectsCount = 1) and
|
|
(dirtyRects^[0].x = 0) and
|
|
(dirtyRects^[0].y = 0) and
|
|
(dirtyRects^[0].width = FTextureWidth) and
|
|
(dirtyRects^[0].height = FTextureHeight)) then
|
|
begin
|
|
// Update/resize the whole texture.
|
|
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
|
|
VerifyOpenGLErrors;
|
|
|
|
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
|
|
VerifyOpenGLErrors;
|
|
|
|
glTexImage2D(GL_TEXTURE_2D,
|
|
0, GL_RGBA, FTextureWidth, FTextureHeight,
|
|
0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer);
|
|
VerifyOpenGLErrors;
|
|
end
|
|
else
|
|
begin
|
|
// Update just the dirty rectangles.
|
|
i := 0;
|
|
while (i < dirtyRectsCount) do
|
|
begin
|
|
TempRect := dirtyRects^[i];
|
|
|
|
if (TempRect.x + TempRect.width <= FTextureWidth) and
|
|
(TempRect.y + TempRect.height <= FTextureHeight) then
|
|
begin
|
|
glPixelStorei(GL_UNPACK_SKIP_PIXELS, TempRect.x);
|
|
VerifyOpenGLErrors;
|
|
|
|
glPixelStorei(GL_UNPACK_SKIP_ROWS, TempRect.y);
|
|
VerifyOpenGLErrors;
|
|
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0,
|
|
TempRect.x, TempRect.y,
|
|
TempRect.width, TempRect.height,
|
|
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
|
|
buffer);
|
|
VerifyOpenGLErrors;
|
|
end;
|
|
|
|
inc(i);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
PET_POPUP :
|
|
if (FPopUpRect.Right > FPopUpRect.Left) and
|
|
(FPopUpRect.Bottom > FPopUpRect.Top) then
|
|
begin
|
|
TempSkipPixels := 0;
|
|
TempSkipRows := 0;
|
|
x := FPopUpRect.Left;
|
|
y := FPopUpRect.Top;
|
|
w := aWidth;
|
|
h := aHeight;
|
|
|
|
// Adjust the popup to fit inside the view.
|
|
if (x < 0) then
|
|
begin
|
|
TempSkipPixels := -x;
|
|
x := 0;
|
|
end;
|
|
|
|
if (y < 0) then
|
|
begin
|
|
TempSkipRows := -y;
|
|
y := 0;
|
|
end;
|
|
|
|
if (x + w > FTextureWidth) then
|
|
w := FTextureWidth - x;
|
|
|
|
if (y + h > FTextureHeight) then
|
|
h := FTextureHeight - y;
|
|
|
|
// Update the popup rectangle.
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH, aWidth);
|
|
VerifyOpenGLErrors;
|
|
|
|
glPixelStorei(GL_UNPACK_SKIP_PIXELS, TempSkipPixels);
|
|
VerifyOpenGLErrors;
|
|
|
|
glPixelStorei(GL_UNPACK_SKIP_ROWS, TempSkipRows);
|
|
VerifyOpenGLErrors;
|
|
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, w, h, GL_BGRA,
|
|
GL_UNSIGNED_INT_8_8_8_8_REV, buffer);
|
|
VerifyOpenGLErrors;
|
|
end;
|
|
end;
|
|
|
|
// Disable 2D textures.
|
|
glDisable(GL_TEXTURE_2D);
|
|
VerifyOpenGLErrors;
|
|
|
|
OpenGLControl1.Invalidate;
|
|
end;
|
|
|
|
procedure TForm1.chrmosrPopupShow(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
aShow : Boolean);
|
|
begin
|
|
if aShow then
|
|
FShowPopUp := True
|
|
else
|
|
begin
|
|
FShowPopUp := False;
|
|
FPopUpRect := rect(0, 0, 0, 0);
|
|
|
|
if (chrmosr <> nil) then chrmosr.Invalidate(PET_VIEW);
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.chrmosrPopupSize(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
const rect : PCefRect);
|
|
begin
|
|
LogicalToDevice(rect^, GlobalCEFApp.DeviceScaleFactor);
|
|
|
|
FPopUpRect.Left := rect^.x;
|
|
FPopUpRect.Top := rect^.y;
|
|
FPopUpRect.Right := rect^.x + rect^.width - 1;
|
|
FPopUpRect.Bottom := rect^.y + rect^.height - 1;
|
|
end;
|
|
|
|
procedure TForm1.chrmosrTooltip(Sender: TObject; const browser: ICefBrowser; var aText: ustring; out Result: Boolean);
|
|
begin
|
|
OpenGLControl1.hint := UTF8Encode(aText);
|
|
OpenGLControl1.ShowHint := (length(aText) > 0);
|
|
Result := True;
|
|
end;
|
|
|
|
procedure TForm1.ComboBox1Enter(Sender: TObject);
|
|
begin
|
|
chrmosr.SetFocus(False);
|
|
end;
|
|
|
|
function TForm1.getModifiers(Shift: TShiftState): TCefEventFlags;
|
|
begin
|
|
Result := EVENTFLAG_NONE;
|
|
|
|
if (ssShift in Shift) then Result := Result or EVENTFLAG_SHIFT_DOWN;
|
|
if (ssAlt in Shift) then Result := Result or EVENTFLAG_ALT_DOWN;
|
|
if (ssCtrl in Shift) then Result := Result or EVENTFLAG_CONTROL_DOWN;
|
|
if (ssLeft in Shift) then Result := Result or EVENTFLAG_LEFT_MOUSE_BUTTON;
|
|
if (ssRight in Shift) then Result := Result or EVENTFLAG_RIGHT_MOUSE_BUTTON;
|
|
if (ssMiddle in Shift) then Result := Result or EVENTFLAG_MIDDLE_MOUSE_BUTTON;
|
|
end;
|
|
|
|
function TForm1.GetButton(Button: TMouseButton): TCefMouseButtonType;
|
|
begin
|
|
case Button of
|
|
TMouseButton.mbRight : Result := MBT_RIGHT;
|
|
TMouseButton.mbMiddle : Result := MBT_MIDDLE;
|
|
else Result := MBT_LEFT;
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.WMMove(var aMessage : TWMMove);
|
|
begin
|
|
inherited;
|
|
|
|
if (chrmosr <> nil) then chrmosr.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TForm1.WMMoving(var aMessage : TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (chrmosr <> nil) then chrmosr.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TForm1.WMCaptureChanged(var aMessage : TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (chrmosr <> nil) then chrmosr.SendCaptureLostEvent;
|
|
end;
|
|
|
|
procedure TForm1.WMCancelMode(var aMessage : TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (chrmosr <> nil) then chrmosr.SendCaptureLostEvent;
|
|
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;
|
|
|
|
procedure TForm1.WMSysChar(var aMessage: TMessage);
|
|
var
|
|
TempKeyEvent : TCefKeyEvent;
|
|
begin
|
|
inherited;
|
|
|
|
if OpenGLControl1.Focused and (aMessage.wParam in [VK_BACK..VK_HELP]) then
|
|
begin
|
|
TempKeyEvent.kind := KEYEVENT_CHAR;
|
|
TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam);
|
|
TempKeyEvent.windows_key_code := aMessage.wParam;
|
|
TempKeyEvent.native_key_code := aMessage.lParam;
|
|
TempKeyEvent.is_system_key := ord(True);
|
|
TempKeyEvent.character := #0;
|
|
TempKeyEvent.unmodified_character := #0;
|
|
TempKeyEvent.focus_on_editable_field := ord(False);
|
|
|
|
CefCheckAltGrPressed(aMessage.wParam, TempKeyEvent);
|
|
chrmosr.SendKeyEvent(@TempKeyEvent);
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.WMSysKeyDown(var aMessage: TMessage);
|
|
var
|
|
TempKeyEvent : TCefKeyEvent;
|
|
begin
|
|
inherited;
|
|
|
|
if OpenGLControl1.Focused and (aMessage.wParam in [VK_BACK..VK_HELP]) then
|
|
begin
|
|
TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN;
|
|
TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam);
|
|
TempKeyEvent.windows_key_code := aMessage.wParam;
|
|
TempKeyEvent.native_key_code := aMessage.lParam;
|
|
TempKeyEvent.is_system_key := ord(True);
|
|
TempKeyEvent.character := #0;
|
|
TempKeyEvent.unmodified_character := #0;
|
|
TempKeyEvent.focus_on_editable_field := ord(False);
|
|
|
|
chrmosr.SendKeyEvent(@TempKeyEvent);
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.WMSysKeyUp(var aMessage: TMessage);
|
|
var
|
|
TempKeyEvent : TCefKeyEvent;
|
|
begin
|
|
inherited;
|
|
|
|
if OpenGLControl1.Focused and (aMessage.wParam in [VK_BACK..VK_HELP]) then
|
|
begin
|
|
TempKeyEvent.kind := KEYEVENT_KEYUP;
|
|
TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam);
|
|
TempKeyEvent.windows_key_code := aMessage.wParam;
|
|
TempKeyEvent.native_key_code := aMessage.lParam;
|
|
TempKeyEvent.is_system_key := ord(True);
|
|
TempKeyEvent.character := #0;
|
|
TempKeyEvent.unmodified_character := #0;
|
|
TempKeyEvent.focus_on_editable_field := ord(False);
|
|
|
|
chrmosr.SendKeyEvent(@TempKeyEvent);
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.WMDpiChanged(var Message: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (GlobalCEFApp <> nil) then
|
|
GlobalCEFApp.UpdateDeviceScaleFactor;
|
|
|
|
if (chrmosr <> nil) then
|
|
begin
|
|
chrmosr.NotifyScreenInfoChanged;
|
|
chrmosr.WasResized;
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.BrowserCreatedMsg(var aMessage : TMessage);
|
|
begin
|
|
Caption := 'Simple Lazarus OSR Browser 2';
|
|
NavControlPnl.Enabled := True;
|
|
end;
|
|
|
|
procedure TForm1.FormAfterMonitorDpiChanged(Sender: TObject; OldDPI, NewDPI: Integer);
|
|
begin
|
|
if (chrmosr <> nil) then
|
|
begin
|
|
chrmosr.NotifyScreenInfoChanged;
|
|
chrmosr.WasResized;
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
begin
|
|
CanClose := FCanClose;
|
|
|
|
if not(FClosing) then
|
|
begin
|
|
FClosing := True;
|
|
Visible := False;
|
|
chrmosr.CloseBrowser(True);
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.FormCreate(Sender: TObject);
|
|
begin
|
|
FTextureID := 0;
|
|
FTextureWidth := 0;
|
|
FTextureHeight := 0;
|
|
FPopUpRect := rect(0, 0, 0, 0);
|
|
FShowPopUp := False;
|
|
FCanClose := False;
|
|
FClosing := False;
|
|
|
|
InitializeLastClick;
|
|
|
|
chrmosr.DefaultURL := UTF8Decode(ComboBox1.Text);
|
|
end;
|
|
|
|
procedure TForm1.FormDestroy(Sender: TObject);
|
|
begin
|
|
chrmosr.ShutdownDragAndDrop;
|
|
|
|
If (FTextureID <> 0) then
|
|
glDeleteTextures(1, @FTextureID);
|
|
end;
|
|
|
|
procedure TForm1.FormHide(Sender: TObject);
|
|
begin
|
|
chrmosr.SetFocus(False);
|
|
chrmosr.WasHidden(True);
|
|
end;
|
|
|
|
procedure TForm1.FormShow(Sender: TObject);
|
|
begin
|
|
if chrmosr.Initialized then
|
|
begin
|
|
chrmosr.WasHidden(False);
|
|
chrmosr.SetFocus(True);
|
|
end
|
|
else
|
|
begin
|
|
// Clear OpenGL error cache.
|
|
glGetError();
|
|
|
|
// opaque white background color
|
|
chrmosr.Options.BackgroundColor := CefColorSetARGB($FF, $FF, $FF, $FF);
|
|
|
|
if chrmosr.CreateBrowser(nil, '') then
|
|
chrmosr.InitializeDragAndDrop(OpenGLControl1)
|
|
else
|
|
Timer1.Enabled := True;
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.InitializeLastClick;
|
|
begin
|
|
FLastClickCount := 1;
|
|
FLastClickTime := 0;
|
|
FLastClickPoint.x := 0;
|
|
FLastClickPoint.y := 0;
|
|
FLastClickButton := mbLeft;
|
|
end;
|
|
|
|
function TForm1.CancelPreviousClick(x, y : integer; var aCurrentTime : integer) : boolean;
|
|
begin
|
|
aCurrentTime := GetMessageTime;
|
|
|
|
Result := (abs(FLastClickPoint.x - x) > (GetSystemMetrics(SM_CXDOUBLECLK) div 2)) or
|
|
(abs(FLastClickPoint.y - y) > (GetSystemMetrics(SM_CYDOUBLECLK) div 2)) or
|
|
(cardinal(aCurrentTime - FLastClickTime) > GetDoubleClickTime);
|
|
end;
|
|
|
|
procedure TForm1.Timer1Timer(Sender: TObject);
|
|
begin
|
|
Timer1.Enabled := False;
|
|
|
|
if chrmosr.CreateBrowser(nil, '') then
|
|
chrmosr.InitializeDragAndDrop(OpenGLControl1)
|
|
else
|
|
Timer1.Enabled := True;
|
|
end;
|
|
|
|
function TForm1.InitializeOpenGL : boolean;
|
|
begin
|
|
if FGLInitialized then
|
|
Result := True
|
|
else
|
|
begin
|
|
Result := False;
|
|
|
|
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
|
|
VerifyOpenGLErrors;
|
|
|
|
glClearColor(CefColorGetR(chrmosr.Options.BackgroundColor) / 255,
|
|
CefColorGetG(chrmosr.Options.BackgroundColor) / 255,
|
|
CefColorGetB(chrmosr.Options.BackgroundColor) / 255,
|
|
1);
|
|
VerifyOpenGLErrors;
|
|
|
|
// necessary for non-power-of-2 textures to render correctly
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
VerifyOpenGLErrors;
|
|
|
|
// create the texture
|
|
glGenTextures(1, @FTextureID);
|
|
VerifyOpenGLErrors;
|
|
if (FTextureID = 0) then exit;
|
|
|
|
glBindTexture(GL_TEXTURE_2D, FTextureID);
|
|
VerifyOpenGLErrors;
|
|
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
VerifyOpenGLErrors;
|
|
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
VerifyOpenGLErrors;
|
|
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
VerifyOpenGLErrors;
|
|
|
|
FGLInitialized := True;
|
|
Result := True;
|
|
end;
|
|
end;
|
|
|
|
end.
|