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/* -*- 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 "gfx2DGlue.h"
#include "gfxUtils.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/PathHelpers.h"
#include "nsLayoutUtils.h"
#include "nsRenderingContext.h"
#include "nsDisplayList.h"
using namespace mozilla;
using namespace mozilla::gfx;
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,
DrawTarget* aDrawTarget,
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));
Rect devPxRect =
ToRect(nsLayoutUtils::RectToGfxRect(rect,
aFrame->PresContext()->AppUnitsPerDevPixel()));
ColorPattern color(ToDeviceColor(aFrame->StyleColor()->mColor));
RefPtr<PathBuilder> builder = aDrawTarget->CreatePathBuilder();
AppendEllipseToPath(builder, devPxRect.Center(), devPxRect.Size());
RefPtr<Path> ellipse = builder->Finish();
aDrawTarget->Fill(ellipse, color);
}
void
nsGfxRadioControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists)
{
nsFormControlFrame::BuildDisplayList(aBuilder, aLists);
if (!IsVisibleForPainting(aBuilder))
return;
if (IsThemed())
return; // The theme will paint the check, if any.
bool checked = true;
GetCurrentCheckState(&checked); // Get check state from the content model
if (!checked)
return;
aLists.Content()->AppendNewToTop(new (aBuilder)
nsDisplayGeneric(aBuilder, this, PaintCheckedRadioButton,
"CheckedRadioButton",
nsDisplayItem::TYPE_CHECKED_RADIOBUTTON));
}
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