gecko/layout/forms/nsGfxRadioControlFrame.cpp

87 lines
2.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsGfxRadioControlFrame.h"
#include "nsIContent.h"
#include "nsCOMPtr.h"
#include "nsCSSRendering.h"
#include "nsRenderingContext.h"
#include "nsIServiceManager.h"
#include "nsITheme.h"
#include "nsDisplayList.h"
#include "nsCSSAnonBoxes.h"
using namespace mozilla;
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()
{
}
#ifdef ACCESSIBILITY
a11y::AccType
nsGfxRadioControlFrame::AccessibleType()
{
return a11y::eHTMLRadioButtonType;
}
#endif
//--------------------------------------------------------------
// Draw the dot for a non-native radio button in the checked state.
static void
PaintCheckedRadioButton(nsIFrame* aFrame,
nsRenderingContext* 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.
bool checked = true;
GetCurrentCheckState(&checked); // Get check state from the content model
if (!checked)
return NS_OK;
return aLists.Content()->AppendNewToTop(new (aBuilder)
nsDisplayGeneric(aBuilder, this, PaintCheckedRadioButton,
"CheckedRadioButton",
nsDisplayItem::TYPE_CHECKED_RADIOBUTTON));
}