The Tor Browser: layout/forms/nsGfxRadioControlFrame.cpp@8bccb770b82d

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "nsGfxRadioControlFrame.h"

     7 #include "nsRenderingContext.h"

     8 #include "nsDisplayList.h"

    10 using namespace mozilla;

    12 nsIFrame*

    13 NS_NewGfxRadioControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)

    14 {

    15   return new (aPresShell) nsGfxRadioControlFrame(aContext);

    16 }

    18 NS_IMPL_FRAMEARENA_HELPERS(nsGfxRadioControlFrame)

    20 nsGfxRadioControlFrame::nsGfxRadioControlFrame(nsStyleContext* aContext):

    21   nsFormControlFrame(aContext)

    22 {

    23 }

    25 nsGfxRadioControlFrame::~nsGfxRadioControlFrame()

    26 {

    27 }

    29 #ifdef ACCESSIBILITY

    30 a11y::AccType

    31 nsGfxRadioControlFrame::AccessibleType()

    32 {

    33   return a11y::eHTMLRadioButtonType;

    34 }

    35 #endif

    37 //--------------------------------------------------------------

    38 // Draw the dot for a non-native radio button in the checked state.

    39 static void

    40 PaintCheckedRadioButton(nsIFrame* aFrame,

    41                         nsRenderingContext* aCtx,

    42                         const nsRect& aDirtyRect,

    43                         nsPoint aPt)

    44 {

    45   // The dot is an ellipse 2px on all sides smaller than the content-box,

    46   // drawn in the foreground color.

    47   nsRect rect(aPt, aFrame->GetSize());

    48   rect.Deflate(aFrame->GetUsedBorderAndPadding());

    49   rect.Deflate(nsPresContext::CSSPixelsToAppUnits(2),

    50                nsPresContext::CSSPixelsToAppUnits(2));

    52   aCtx->SetColor(aFrame->StyleColor()->mColor);

    53   aCtx->FillEllipse(rect);

    54 }

    56 void

    57 nsGfxRadioControlFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,

    58                                          const nsRect&           aDirtyRect,

    59                                          const nsDisplayListSet& aLists)

    60 {

    61   nsFormControlFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);

    63   if (!IsVisibleForPainting(aBuilder))

    64     return;

    66   if (IsThemed())

    67     return; // The theme will paint the check, if any.

    69   bool checked = true;

    70   GetCurrentCheckState(&checked); // Get check state from the content model

    71   if (!checked)

    72     return;

    74   aLists.Content()->AppendNewToTop(new (aBuilder)

    75     nsDisplayGeneric(aBuilder, this, PaintCheckedRadioButton,

    76                      "CheckedRadioButton",

    77                      nsDisplayItem::TYPE_CHECKED_RADIOBUTTON));

    78 }

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