gecko-dev/layout/forms/nsGfxRadioControlFrame.cpp

137 lines
4.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
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* ***** END LICENSE BLOCK ***** */
#include "nsGfxRadioControlFrame.h"
#include "nsIContent.h"
#include "nsCOMPtr.h"
#include "nsCSSRendering.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsIServiceManager.h"
#include "nsITheme.h"
#include "nsDisplayList.h"
#include "nsCSSAnonBoxes.h"
nsIFrame*
NS_NewGfxRadioControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsGfxRadioControlFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsGfxRadioControlFrame)
nsGfxRadioControlFrame::nsGfxRadioControlFrame(nsStyleContext* aContext):
nsFormControlFrame(aContext)
{
}
nsGfxRadioControlFrame::~nsGfxRadioControlFrame()
{
}
NS_QUERYFRAME_HEAD(nsGfxRadioControlFrame)
NS_QUERYFRAME_ENTRY(nsIRadioControlFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsFormControlFrame)
#ifdef ACCESSIBILITY
NS_IMETHODIMP
nsGfxRadioControlFrame::GetAccessible(nsIAccessible** aAccessible)
{
nsCOMPtr<nsIAccessibilityService> accService
= do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
return accService->CreateHTMLRadioButtonAccessible(
static_cast<nsIFrame*>(this), aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
//--------------------------------------------------------------
// Draw the dot for a non-native radio button in the checked state.
static void
PaintCheckedRadioButton(nsIFrame* aFrame,
nsIRenderingContext* aCtx,
const nsRect& aDirtyRect,
nsPoint aPt)
{
// The dot is an ellipse 2px on all sides smaller than the content-box,
// drawn in the foreground color.
nsRect rect(aPt, aFrame->GetSize());
rect.Deflate(aFrame->GetUsedBorderAndPadding());
rect.Deflate(nsPresContext::CSSPixelsToAppUnits(2),
nsPresContext::CSSPixelsToAppUnits(2));
aCtx->SetColor(aFrame->GetStyleColor()->mColor);
aCtx->FillEllipse(rect);
}
NS_IMETHODIMP
nsGfxRadioControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
nsresult rv = nsFormControlFrame::BuildDisplayList(aBuilder, aDirtyRect,
aLists);
NS_ENSURE_SUCCESS(rv, rv);
if (!IsVisibleForPainting(aBuilder))
return NS_OK;
if (IsThemed())
return NS_OK; // The theme will paint the check, if any.
PRBool checked = PR_TRUE;
GetCurrentCheckState(&checked); // Get check state from the content model
if (!checked)
return NS_OK;
return aLists.Content()->AppendNewToTop(new (aBuilder)
nsDisplayGeneric(this, PaintCheckedRadioButton, "CheckedRadioButton"));
}
NS_IMETHODIMP
nsGfxRadioControlFrame::OnChecked(nsPresContext* aPresContext,
PRBool aChecked)
{
InvalidateOverflowRect();
return NS_OK;
}