Mozilla/mozilla/widget/src/beos/nsRadioButton.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * 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.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

#include "nsRadioButton.h"
#include "nsToolkit.h"
#include "nsColor.h"
#include "nsGUIEvent.h"
#include "nsStringUtil.h"

#include "nsILookAndFeel.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"

#include "nsIDeviceContext.h"

NS_IMPL_ADDREF(nsRadioButton)
NS_IMPL_RELEASE(nsRadioButton)

//-------------------------------------------------------------------------
//
// nsRadioButton constructor
//
//-------------------------------------------------------------------------
nsRadioButton::nsRadioButton() : nsWindow(), nsIRadioButton()
{
  NS_INIT_REFCNT();
}


//-------------------------------------------------------------------------
//
// nsRadioButton destructor
//
//-------------------------------------------------------------------------
nsRadioButton::~nsRadioButton()
{
}


//-------------------------------------------------------------------------
//
// Query interface implementation
//
//-------------------------------------------------------------------------
nsresult nsRadioButton::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
  nsresult result = nsWindow::QueryInterface(aIID, aInstancePtr);

  static NS_DEFINE_IID(kIRadioButtonIID, NS_IRADIOBUTTON_IID);
  if (result == NS_NOINTERFACE && aIID.Equals(kIRadioButtonIID)) {
      *aInstancePtr = (void*) ((nsIRadioButton*)this);
      NS_ADDREF_THIS();
      result = NS_OK;
  }
  return result;
  }

//-------------------------------------------------------------------------
//
// Sets the state of the nsRadioButton 
//
//-------------------------------------------------------------------------
NS_METHOD nsRadioButton::SetState(const PRBool aState) 
{
	fState = aState;
	if(mRadioButton && mRadioButton->LockLooper())
	{
		mRadioButton->SetValue(aState ? 1 : 0);
		mRadioButton->UnlockLooper();
	}
	return NS_OK;
}

//-------------------------------------------------------------------------
//
// Set this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsRadioButton::GetState(PRBool& aState)
{
  aState = fState;
  return NS_OK;
}

//-------------------------------------------------------------------------
//
// Set this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsRadioButton::SetLabel(const nsString& aText)
{
	char label[256];
	aText.ToCString(label, 256);
	label[255] = '\0';
	if(mRadioButton && mRadioButton->LockLooper())
	{
		mRadioButton->SetLabel(label);
		mRadioButton->UnlockLooper();
	}
	return NS_OK;
}


//-------------------------------------------------------------------------
//
// Get this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsRadioButton::GetLabel(nsString& aBuffer)
{
	if(mRadioButton && mRadioButton->LockLooper())
	{
		aBuffer.SetLength(0);
		aBuffer.Append(mRadioButton->Label());
		mRadioButton->UnlockLooper();
	}
	return NS_OK;
}

//-------------------------------------------------------------------------
//
// move, paint, resizes message - ignore
//
//-------------------------------------------------------------------------
PRBool nsRadioButton::OnMove(PRInt32, PRInt32)
{
  return PR_FALSE;
}

PRBool nsRadioButton::OnPaint(nsRect &r)
{
    return PR_FALSE;
}

PRBool nsRadioButton::OnResize(nsRect &aWindowRect)
{
    return PR_FALSE;
}


/**
 * Renders the RadioButton for Printing
 *
 **/
NS_METHOD nsRadioButton::Paint(nsIRenderingContext& aRenderingContext,
                              const nsRect&        aDirtyRect)
{
  float  appUnits;
  float  scale;
  nsIDeviceContext * context;
  aRenderingContext.GetDeviceContext(context);

  context->GetCanonicalPixelScale(scale);
  context->GetDevUnitsToAppUnits(appUnits);
  nsRect rect;
  GetBounds(rect);

  rect.x++;
  rect.y++;
  rect.width  -= 2;
  rect.height -= 2;
  aRenderingContext.SetColor(NS_RGB(0,0,0));

  nscoord one = nscoord(PRFloat64(rect.width) * 1.0/12.0);

  rect.x      = nscoord((PRFloat64)rect.x * appUnits);
  rect.y      = nscoord((PRFloat64)rect.y * appUnits);
  rect.width  = nscoord((PRFloat64)rect.width * appUnits); 
  rect.height = nscoord((PRFloat64)rect.height * appUnits); 
  rect.x      += one;
  rect.width  = nscoord(PRFloat64(rect.width)  * 11.0/12.0);
  rect.height = nscoord(PRFloat64(rect.height) * 11.0/12.0);

  for (nscoord i=0;i<nscoord(scale*1.25);i++) {
    aRenderingContext.DrawArc(rect, 0, 180);
    aRenderingContext.DrawArc(rect, 180, 360);
    rect.x++;
    rect.y++;
    rect.width  -= 2;
    rect.height -= 2;
  }

  if (fState) {
    GetBounds(rect);
    nscoord xHalf = rect.width / 4;
    nscoord yHalf = rect.height / 4;
    rect.x      += xHalf;
    rect.y      += yHalf;
    rect.width  -= xHalf*2;
    rect.height -= yHalf*2;
    aRenderingContext.SetColor(NS_RGB(0,0,0));

    nscoord one    = nscoord(PRFloat64(rect.width) * 1.0/12.0);

    rect.x      = nscoord((PRFloat64)rect.x * appUnits);
    rect.y      = nscoord((PRFloat64)rect.y * appUnits);
    rect.width  = nscoord((PRFloat64)rect.width * appUnits); 
    rect.height = nscoord((PRFloat64)rect.height * appUnits); 
    rect.x      += one;
    rect.width  = nscoord(PRFloat64(rect.width)  * 11.0/12.0);
    rect.height = nscoord(PRFloat64(rect.height) * 11.0/12.0);

    aRenderingContext.FillArc(rect, 0, 180);
    aRenderingContext.FillArc(rect, 180, 360);

  }

  NS_RELEASE(context);
  return NS_OK;
}

BView *nsRadioButton::CreateBeOSView()
{
	return mRadioButton = new nsRadioButtonBeOS(this, BRect(0, 0, 0, 0), "", "", NULL);
}

//-------------------------------------------------------------------------
// Sub-class of BeOS RadioButton
//-------------------------------------------------------------------------
nsRadioButtonBeOS::nsRadioButtonBeOS( nsIWidget *aWidgetWindow, BRect aFrame, 
    const char *aName, const char *aLabel, BMessage *aMessage,
    uint32 aResizingMode, uint32 aFlags )
  : BRadioButton( aFrame, aName, aLabel, aMessage, aResizingMode, aFlags ),
    nsIWidgetStore( aWidgetWindow )
{
}