VGUI HTML Screen In Multiplayer/HTMLView.cpp

See also:  VGUI HTML Screen In Multiplayer/IHTMLView.h

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January 2024

//========= Public Domain 2006, Julian 'Daedalus' Thatcher. =====================//
//
// Purpose: HTMLView implementation
//
// Ingame Usage Commands:
//  cl_htmltarget path_to_file		Sets the URL to view
//  ToggleHTMLView					Shows or hides the HTML view
// 
// If the given url does not begin with 'http://', it is considered relative
// to the mod directory.
// If the given url starts with 'entity://', it will trigger an entity action.
// Example: 'entity://relay_open_door->trigger'
//  You may also add a url to go to after the entity action has been fired by
//  placing a ; at the end, and then your url. Eg:
//   'entity://relay_open_door->trigger;html/sample2.html'
//   'entity://relay_close_door->trigger;:www.google.com'
//
//
// $Created: Tuesday, 26 December 2006
// $LastUpdated: Monday, 21 May 2007
// $Author:  Julian 'Daedalus' Thatcher (daedalus.raistlin@gmail.com)
// $NoKeywords: $
//=============================================================================//

//The following include files are necessary to allow your HTMLView.cpp to compile.
#include "cbase.h"
#include "IHTMLView.h"

using namespace vgui;

#include "iclientmode.h"
#include <vgui/IVGui.h>
#include <vgui_controls/Button.h>
#include <vgui_controls/Frame.h>
#include <vgui_controls/HTML.h>
#include <vgui_controls/TextEntry.h>

#include "EntHTML.h"

#include <cdll_client_int.h>

#define ALLOW_JAVASCRIPT	false
#define VERSION				"1.00.06"

static void onTargetUpdate (ConVar *var, char const *pOldString);

ConVar cl_showhtmlview("cl_showhtmlview", "0", FCVAR_CLIENTDLL, "Sets the state of HTMLView <state>");
ConVar cl_htmltarget("cl_htmltarget", "", FCVAR_CLIENTDLL, 
					 "Sets the HTML address to <state>.", onTargetUpdate);

// Constuctor: Initializes the Panel
CHTMLView_Panel::CHTMLView_Panel(vgui::VPANEL parent)
: BaseClass(NULL, "HTMLView")
{
	SetParent( parent );

	SetKeyBoardInputEnabled( true );
	SetMouseInputEnabled( true );
	
	SetProportional( true );
	SetTitleBarVisible( true );
	SetMinimizeButtonVisible( false );
	SetMaximizeButtonVisible( false );
	SetCloseButtonVisible( true );
	SetSizeable( true );	// was false
	SetMoveable( true );
	SetVisible( true );

	m_HTML = new EntHTML(this, "MyHTMLPage", ALLOW_JAVASCRIPT);
	
	SetScheme(vgui::scheme()->LoadSchemeFromFile("resource/SourceScheme.res", "SourceScheme"));

	LoadControlSettings("resource/UI/HTMLView.res");

	vgui::ivgui()->AddTickSignal( GetVPanel(), 100 );
	
	DevMsg("HTMLView has been constructed\n");

	CenterThisPanelOnScreen();

}

//Class: CHTMLView_PanelInterface Class. Used for construction.
class CHTMLView_PanelInterface : public IHTMLView
{
private:
	CHTMLView_Panel *MyPanel;
public:
	CHTMLView_PanelInterface()
	{
		MyPanel = NULL;
	}
	void Create(vgui::VPANEL parent)
	{
		MyPanel = new CHTMLView_Panel(parent);
	}
	void Destroy()
	{
		if (MyPanel)
		{
			MyPanel->SetParent( (vgui::Panel *)NULL);
			delete MyPanel;
		}
	}
	void Activate( void )
	{
		if ( MyPanel )
		{
			MyPanel->Activate();
		}
	}

	// Update HTML address
	void UpdateHTML ( void )
	{
		char *target;
		char temp[1024];
		if ( MyPanel )
		{
			// Get value of 'cl_htmltarget'
			target = (char *) cl_htmltarget.GetString();
			if(strlen(target) > 0)
			{
				if(target[0] != ':') 
				{
					// Start of address is not :, assume local file
					strcpy(temp, engine->GetGameDirectory());
					strcat(temp, "/");
					strcat(temp, target);
					MyPanel->m_HTML->OpenURL(temp, true);
				} else {
					// : denotes a web address
					// Replace : with 'http://'
					char *n_target = target;
					n_target++; if(!*n_target) { return ; } // Buffer check
					n_target++;
					strcpy(temp, "http://");
					strcat(temp, n_target);
					MyPanel->m_HTML->OpenURL(temp, true);
				}
			}
		}
	}
};

void CHTMLView_Panel::OnTick()
{
	BaseClass::OnTick();
	SetVisible(cl_showhtmlview.GetBool()); //CL_SHOWMYPANEL / 1 BY DEFAULT
}

//
// Handle commands from VGUI events.
// By default, only the 'exit' button has a command, and that
// command is 'turnoff'
void CHTMLView_Panel::OnCommand(const char* pcCommand)
{
	if(!Q_stricmp(pcCommand, "turnoff"))
		cl_showhtmlview.SetValue(0);
}

static void onTargetUpdate (ConVar *var, char const *pOldString)
{
	htmlview->UpdateHTML();
}

static CHTMLView_PanelInterface g_MyPanel;

// The following are exported to the game system
IHTMLView* htmlview = (IHTMLView*)&g_MyPanel;

CON_COMMAND(ToggleHTMLView, "Toggles HTMLView on or off")
{
	cl_showhtmlview.SetValue(!cl_showhtmlview.GetBool());
	htmlview->Activate();	
};

CON_COMMAND(UpdateHTMLView, "Updates HTMLView address")
{
	DevMsg("Updating myPanel location");
	htmlview->UpdateHTML();
}

// This was used for debugging
// Displays current mod directory
CON_COMMAND(WhereAmI, "Displays current path")
{
	const char *pGameDir = engine->GetGameDirectory();
	DevMsg(pGameDir);
}

CON_COMMAND(HTMLViewVersion, "Displays VGUI HTML Screen version")
{
	DevMsg("VGUI HTML Screen v " VERSION " by Daedalus\n");
}