forked from mirrors/gecko-dev
147 lines
4.9 KiB
C++
147 lines
4.9 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 "nsGfxCheckboxControlFrame.h"
|
|
|
|
#include "gfxUtils.h"
|
|
#include "mozilla/gfx/2D.h"
|
|
#include "nsIContent.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsLayoutUtils.h"
|
|
#include "nsRenderingContext.h"
|
|
#include "nsIDOMHTMLInputElement.h"
|
|
#include "nsDisplayList.h"
|
|
#include <algorithm>
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::gfx;
|
|
|
|
static void
|
|
PaintCheckMark(nsIFrame* aFrame,
|
|
DrawTarget* aDrawTarget,
|
|
const nsRect& aDirtyRect,
|
|
nsPoint aPt)
|
|
{
|
|
nsRect rect(aPt, aFrame->GetSize());
|
|
rect.Deflate(aFrame->GetUsedBorderAndPadding());
|
|
|
|
// Points come from the coordinates on a 7X7 unit box centered at 0,0
|
|
const int32_t checkPolygonX[] = { -3, -1, 3, 3, -1, -3 };
|
|
const int32_t checkPolygonY[] = { -1, 1, -3, -1, 3, 1 };
|
|
const int32_t checkNumPoints = sizeof(checkPolygonX) / sizeof(int32_t);
|
|
const int32_t checkSize = 9; // 2 units of padding on either side
|
|
// of the 7x7 unit checkmark
|
|
|
|
// Scale the checkmark based on the smallest dimension
|
|
nscoord paintScale = std::min(rect.width, rect.height) / checkSize;
|
|
nsPoint paintCenter(rect.x + rect.width / 2,
|
|
rect.y + rect.height / 2);
|
|
|
|
RefPtr<PathBuilder> builder = aDrawTarget->CreatePathBuilder();
|
|
nsPoint p = paintCenter + nsPoint(checkPolygonX[0] * paintScale,
|
|
checkPolygonY[0] * paintScale);
|
|
|
|
int32_t appUnitsPerDevPixel = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
builder->MoveTo(NSPointToPoint(p, appUnitsPerDevPixel));
|
|
for (int32_t polyIndex = 1; polyIndex < checkNumPoints; polyIndex++) {
|
|
p = paintCenter + nsPoint(checkPolygonX[polyIndex] * paintScale,
|
|
checkPolygonY[polyIndex] * paintScale);
|
|
builder->LineTo(NSPointToPoint(p, appUnitsPerDevPixel));
|
|
}
|
|
RefPtr<Path> path = builder->Finish();
|
|
aDrawTarget->Fill(path,
|
|
ColorPattern(ToDeviceColor(aFrame->StyleColor()->mColor)));
|
|
}
|
|
|
|
static void
|
|
PaintIndeterminateMark(nsIFrame* aFrame,
|
|
DrawTarget* aDrawTarget,
|
|
const nsRect& aDirtyRect,
|
|
nsPoint aPt)
|
|
{
|
|
int32_t appUnitsPerDevPixel = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
nsRect rect(aPt, aFrame->GetSize());
|
|
rect.Deflate(aFrame->GetUsedBorderAndPadding());
|
|
rect.y += (rect.height - rect.height/4) / 2;
|
|
rect.height /= 4;
|
|
|
|
Rect devPxRect = NSRectToSnappedRect(rect, appUnitsPerDevPixel, *aDrawTarget);
|
|
|
|
aDrawTarget->FillRect(
|
|
devPxRect, ColorPattern(ToDeviceColor(aFrame->StyleColor()->mColor)));
|
|
}
|
|
|
|
//------------------------------------------------------------
|
|
nsIFrame*
|
|
NS_NewGfxCheckboxControlFrame(nsIPresShell* aPresShell,
|
|
nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsGfxCheckboxControlFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsGfxCheckboxControlFrame)
|
|
|
|
|
|
//------------------------------------------------------------
|
|
// Initialize GFX-rendered state
|
|
nsGfxCheckboxControlFrame::nsGfxCheckboxControlFrame(nsStyleContext* aContext)
|
|
: nsFormControlFrame(aContext)
|
|
{
|
|
}
|
|
|
|
nsGfxCheckboxControlFrame::~nsGfxCheckboxControlFrame()
|
|
{
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
a11y::AccType
|
|
nsGfxCheckboxControlFrame::AccessibleType()
|
|
{
|
|
return a11y::eHTMLCheckboxType;
|
|
}
|
|
#endif
|
|
|
|
//------------------------------------------------------------
|
|
void
|
|
nsGfxCheckboxControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsFormControlFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
|
|
|
|
// Get current checked state through content model.
|
|
if ((!IsChecked() && !IsIndeterminate()) || !IsVisibleForPainting(aBuilder))
|
|
return; // we're not checked or not visible, nothing to paint.
|
|
|
|
if (IsThemed())
|
|
return; // No need to paint the checkmark. The theme will do it.
|
|
|
|
aLists.Content()->AppendNewToTop(new (aBuilder)
|
|
nsDisplayGeneric(aBuilder, this,
|
|
IsIndeterminate()
|
|
? PaintIndeterminateMark : PaintCheckMark,
|
|
"CheckedCheckbox",
|
|
nsDisplayItem::TYPE_CHECKED_CHECKBOX));
|
|
}
|
|
|
|
//------------------------------------------------------------
|
|
bool
|
|
nsGfxCheckboxControlFrame::IsChecked()
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLInputElement> elem(do_QueryInterface(mContent));
|
|
bool retval = false;
|
|
elem->GetChecked(&retval);
|
|
return retval;
|
|
}
|
|
|
|
bool
|
|
nsGfxCheckboxControlFrame::IsIndeterminate()
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLInputElement> elem(do_QueryInterface(mContent));
|
|
bool retval = false;
|
|
elem->GetIndeterminate(&retval);
|
|
return retval;
|
|
}
|