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75 lines
3.3 KiB
ObjectPascal
75 lines
3.3 KiB
ObjectPascal
program ConsoleBrowser2;
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{$MODE Delphi}
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{$APPTYPE CONSOLE}
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{.$R *.res}
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uses
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SysUtils, Interfaces,
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uCEFApplication,
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uEncapsulatedBrowser in 'uEncapsulatedBrowser.pas',
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uCEFBrowserThread in 'uCEFBrowserThread.pas';
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{$IFDEF WIN32}
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// CEF3 needs to set the LARGEADDRESSAWARE ($20) flag which allows 32-bit processes to use up to 3GB of RAM.
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{$SetPEFlags $20}
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{$ENDIF}
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// This demo navigates to a webpage, captures the browser screen and saves it as a bitmap file called "snapshot.bmp"
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// ConsoleBrowser2 is a console application without a user interface. For this reason the browser is in
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// "off-screen mode" (OSR mode), it's encamsulated in a custom thread and it uses a different EXE for the
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// CEF subprocesses (ConsoleBrowser2_sp.exe).
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// In order to test this demo you need to build the "ConsoleBrowser2_sp.lpr" project too !!!
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// While the custom browser thread is loading the webpage and capturing the screen, the console application is
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// waiting for an Event.
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// ConsoleBrowser2 reads the "/url" parameter and uses that URL to navigate and capture the screen.
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// For example : ConsoleBrowser2.exe /url=https://www.briskbard.com
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// If you need to debug this demo in Lazarus using http://www.example.com click on the "Run->Run Parameters" menu option,
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// and type "/url=http://www.example.com" (without quotes) in the "Command line parameters" box.
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// By default the browser uses a virtual screen size of 1024x728 with 96 DPI (screen scale = 1)
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// If you need a different resolution or scale just edit those values in TEncapsulatedBrowser.Create
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// or add new command line switches with the new information.
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// The browser captures the screen when the main frame is loaded but some web pages need some extra time to finish.
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// This demo uses a 500 ms delay to avoid this problem and you can modify this value in TEncapsulatedBrowser.Create
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// CEF is configured in this demo to use "in memory" cache. As a result of this, the browser will always download
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// all the web page resources. Remember that if you switch to a local directory for the cache you will have problems
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// when you run several instances of this demo at the same time because Chromium doesn't allow sharing the same cache
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// by different processes.
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// This demo is configured to load the CEF binaries in the same directory were ConsoleBrowser2.exe is located but you
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// can set a different directory for the binaries by setting the GlobalCEFApp.FrameworkDirPath,
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// GlobalCEFApp.ResourcesDirPath and GlobalCEFApp.LocalesDirPath properties inside CreateGlobalCEFApp.
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// See the SimpleBrowser2 demo for more details.
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// CEF is configured to use ConsoleBrowser2_sp.exe for the subprocesses and it tries to find it in the same directory as
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// ConsoleBrowser2.exe but it's possible to use a different location for that EXE if you set a custom path in
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// GlobalCEFApp.BrowserSubprocessPath.
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// Most of the GlobalCEFApp properties must be the same in the main EXE and the EXE for the subprocesses. If you modify
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// them in CreateGlobalCEFApp then you'll also have to copy those property values in ConsoleBrowser2_sp.dpr
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// See the "SubProcess" demo for more details.
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begin
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try
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try
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CreateGlobalCEFApp;
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if WaitForMainAppEvent then
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WriteResult;
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except
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on E: Exception do
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Writeln(E.ClassName, ': ', E.Message);
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end;
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finally
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DestroyGlobalCEFApp;
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end;
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end.
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