The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/layout/forms/nsGfxCheckboxControlFrame.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,135 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "nsGfxCheckboxControlFrame.h"
    1.10 +#include "nsIContent.h"
    1.11 +#include "nsCOMPtr.h"
    1.12 +#include "nsRenderingContext.h"
    1.13 +#include "nsIDOMHTMLInputElement.h"
    1.14 +#include "nsDisplayList.h"
    1.15 +#include <algorithm>
    1.16 +
    1.17 +using namespace mozilla;
    1.18 +
    1.19 +static void
    1.20 +PaintCheckMark(nsIFrame* aFrame,
    1.21 +               nsRenderingContext* aCtx,
    1.22 +               const nsRect& aDirtyRect,
    1.23 +               nsPoint aPt)
    1.24 +{
    1.25 +  nsRect rect(aPt, aFrame->GetSize());
    1.26 +  rect.Deflate(aFrame->GetUsedBorderAndPadding());
    1.27 +
    1.28 +  // Points come from the coordinates on a 7X7 unit box centered at 0,0
    1.29 +  const int32_t checkPolygonX[] = { -3, -1,  3,  3, -1, -3 };
    1.30 +  const int32_t checkPolygonY[] = { -1,  1, -3, -1,  3,  1 };
    1.31 +  const int32_t checkNumPoints = sizeof(checkPolygonX) / sizeof(int32_t);
    1.32 +  const int32_t checkSize      = 9; // 2 units of padding on either side
    1.33 +                                    // of the 7x7 unit checkmark
    1.34 +
    1.35 +  // Scale the checkmark based on the smallest dimension
    1.36 +  nscoord paintScale = std::min(rect.width, rect.height) / checkSize;
    1.37 +  nsPoint paintCenter(rect.x + rect.width  / 2,
    1.38 +                      rect.y + rect.height / 2);
    1.39 +
    1.40 +  nsPoint paintPolygon[checkNumPoints];
    1.41 +  // Convert checkmark for screen rendering
    1.42 +  for (int32_t polyIndex = 0; polyIndex < checkNumPoints; polyIndex++) {
    1.43 +    paintPolygon[polyIndex] = paintCenter +
    1.44 +                              nsPoint(checkPolygonX[polyIndex] * paintScale,
    1.45 +                                      checkPolygonY[polyIndex] * paintScale);
    1.46 +  }
    1.47 +
    1.48 +  aCtx->SetColor(aFrame->StyleColor()->mColor);
    1.49 +  aCtx->FillPolygon(paintPolygon, checkNumPoints);
    1.50 +}
    1.51 +
    1.52 +static void
    1.53 +PaintIndeterminateMark(nsIFrame* aFrame,
    1.54 +                       nsRenderingContext* aCtx,
    1.55 +                       const nsRect& aDirtyRect,
    1.56 +                       nsPoint aPt)
    1.57 +{
    1.58 +  nsRect rect(aPt, aFrame->GetSize());
    1.59 +  rect.Deflate(aFrame->GetUsedBorderAndPadding());
    1.60 +
    1.61 +  rect.y += (rect.height - rect.height/4) / 2;
    1.62 +  rect.height /= 4;
    1.63 +
    1.64 +  aCtx->SetColor(aFrame->StyleColor()->mColor);
    1.65 +  aCtx->FillRect(rect);
    1.66 +}
    1.67 +
    1.68 +//------------------------------------------------------------
    1.69 +nsIFrame*
    1.70 +NS_NewGfxCheckboxControlFrame(nsIPresShell* aPresShell,
    1.71 +                              nsStyleContext* aContext)
    1.72 +{
    1.73 +  return new (aPresShell) nsGfxCheckboxControlFrame(aContext);
    1.74 +}
    1.75 +
    1.76 +NS_IMPL_FRAMEARENA_HELPERS(nsGfxCheckboxControlFrame)
    1.77 +
    1.78 +
    1.79 +//------------------------------------------------------------
    1.80 +// Initialize GFX-rendered state
    1.81 +nsGfxCheckboxControlFrame::nsGfxCheckboxControlFrame(nsStyleContext* aContext)
    1.82 +: nsFormControlFrame(aContext)
    1.83 +{
    1.84 +}
    1.85 +
    1.86 +nsGfxCheckboxControlFrame::~nsGfxCheckboxControlFrame()
    1.87 +{
    1.88 +}
    1.89 +
    1.90 +#ifdef ACCESSIBILITY
    1.91 +a11y::AccType
    1.92 +nsGfxCheckboxControlFrame::AccessibleType()
    1.93 +{
    1.94 +  return a11y::eHTMLCheckboxType;
    1.95 +}
    1.96 +#endif
    1.97 +
    1.98 +//------------------------------------------------------------
    1.99 +void
   1.100 +nsGfxCheckboxControlFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
   1.101 +                                            const nsRect&           aDirtyRect,
   1.102 +                                            const nsDisplayListSet& aLists)
   1.103 +{
   1.104 +  nsFormControlFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
   1.105 +  
   1.106 +  // Get current checked state through content model.
   1.107 +  if ((!IsChecked() && !IsIndeterminate()) || !IsVisibleForPainting(aBuilder))
   1.108 +    return;   // we're not checked or not visible, nothing to paint.
   1.109 +    
   1.110 +  if (IsThemed())
   1.111 +    return; // No need to paint the checkmark. The theme will do it.
   1.112 +
   1.113 +  aLists.Content()->AppendNewToTop(new (aBuilder)
   1.114 +    nsDisplayGeneric(aBuilder, this,
   1.115 +                     IsIndeterminate()
   1.116 +                     ? PaintIndeterminateMark : PaintCheckMark,
   1.117 +                     "CheckedCheckbox",
   1.118 +                     nsDisplayItem::TYPE_CHECKED_CHECKBOX));
   1.119 +}
   1.120 +
   1.121 +//------------------------------------------------------------
   1.122 +bool
   1.123 +nsGfxCheckboxControlFrame::IsChecked()
   1.124 +{
   1.125 +  nsCOMPtr<nsIDOMHTMLInputElement> elem(do_QueryInterface(mContent));
   1.126 +  bool retval = false;
   1.127 +  elem->GetChecked(&retval);
   1.128 +  return retval;
   1.129 +}
   1.130 +
   1.131 +bool
   1.132 +nsGfxCheckboxControlFrame::IsIndeterminate()
   1.133 +{
   1.134 +  nsCOMPtr<nsIDOMHTMLInputElement> elem(do_QueryInterface(mContent));
   1.135 +  bool retval = false;
   1.136 +  elem->GetIndeterminate(&retval);
   1.137 +  return retval;
   1.138 +}