mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 16:25:57 +01:00
138 lines
4.5 KiB
ObjectPascal
138 lines
4.5 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 CEF3 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 © 2017 Salvador Díaz 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 uGeolocation;
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{$I cef.inc}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
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Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls, Vcl.ComCtrls,
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{$ELSE}
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Windows, Messages, SysUtils, Variants, Classes, Graphics,
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Controls, Forms, Dialogs, StdCtrls, ExtCtrls, ComCtrls,
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{$ENDIF}
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uCEFChromium, uCEFWindowParent, uCEFInterfaces, uCEFApplication, uCEFTypes, uCEFConstants;
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const
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MINIBROWSER_NEWLOCATION = WM_APP + $100;
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type
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TGeolocationFrm = class(TForm)
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CEFWindowParent1: TCEFWindowParent;
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Chromium1: TChromium;
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NavControlPnl: TPanel;
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Edit1: TEdit;
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GoBtn: TButton;
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StatusBar1: TStatusBar;
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Timer1: TTimer;
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procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
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procedure GoBtnClick(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure Timer1Timer(Sender: TObject);
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protected
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procedure BrowserCreatedMsg(var aMessage : TMessage); message CEF_AFTERCREATED;
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procedure NewLocationMsg(var aMessage : TMessage); message MINIBROWSER_NEWLOCATION;
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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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end;
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var
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GeolocationFrm : TGeolocationFrm;
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GlobalPosition : TCefGeoposition;
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implementation
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{$R *.dfm}
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procedure TGeolocationFrm.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
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begin
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PostMessage(Handle, CEF_AFTERCREATED, 0, 0);
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end;
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procedure TGeolocationFrm.FormShow(Sender: TObject);
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begin
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// GlobalCEFApp.GlobalContextInitialized has to be TRUE before creating any browser
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// If it's not initialized yet, we use a simple timer to create the browser later.
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if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) then Timer1.Enabled := True;
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end;
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procedure TGeolocationFrm.GoBtnClick(Sender: TObject);
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begin
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Chromium1.LoadURL(Edit1.Text);
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end;
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procedure TGeolocationFrm.BrowserCreatedMsg(var aMessage : TMessage);
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begin
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CEFWindowParent1.UpdateSize;
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NavControlPnl.Enabled := True;
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GoBtn.Click;
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end;
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procedure TGeolocationFrm.NewLocationMsg(var aMessage : TMessage);
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begin
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StatusBar1.Panels[0].Text := 'lat : ' + floattostr(GlobalPosition.latitude);
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StatusBar1.Panels[1].Text := 'lon : ' + floattostr(GlobalPosition.longitude);
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StatusBar1.Panels[2].Text := 'alt : ' + floattostr(GlobalPosition.altitude);
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end;
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procedure TGeolocationFrm.Timer1Timer(Sender: TObject);
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begin
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Timer1.Enabled := False;
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if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) then Timer1.Enabled := True;
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end;
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procedure TGeolocationFrm.WMMove(var aMessage : TWMMove);
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begin
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inherited;
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if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
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end;
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procedure TGeolocationFrm.WMMoving(var aMessage : TMessage);
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begin
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inherited;
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if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
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end;
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end.
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