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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 "nsScriptableRegion.h"
#include <stdint.h> // for uint32_t
#include <sys/types.h> // for int32_t
#include "js/RootingAPI.h" // for Rooted
#include "js/Value.h" // for INT_TO_JSVAL, etc
#include "jsapi.h" // for JS_DefineElement, etc
#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
#include "nsError.h" // for NS_OK, NS_ERROR_FAILURE, etc
#include "nsID.h"
#include "nsRect.h" // for mozilla::gfx::IntRect
#include "nscore.h" // for NS_IMETHODIMP
class JSObject;
struct JSContext;
nsScriptableRegion::nsScriptableRegion()
{
}
NS_IMPL_ISUPPORTS(nsScriptableRegion, nsIScriptableRegion)
NS_IMETHODIMP nsScriptableRegion::Init()
{
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::SetToRegion(nsIScriptableRegion *aRegion)
{
aRegion->GetRegion(&mRegion);
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::SetToRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
{
mRegion = mozilla::gfx::IntRect(aX, aY, aWidth, aHeight);
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::IntersectRegion(nsIScriptableRegion *aRegion)
{
nsIntRegion region;
aRegion->GetRegion(®ion);
mRegion.And(mRegion, region);
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::IntersectRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
{
mRegion.And(mRegion, mozilla::gfx::IntRect(aX, aY, aWidth, aHeight));
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::UnionRegion(nsIScriptableRegion *aRegion)
{
nsIntRegion region;
aRegion->GetRegion(®ion);
mRegion.Or(mRegion, region);
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::UnionRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
{
mRegion.Or(mRegion, mozilla::gfx::IntRect(aX, aY, aWidth, aHeight));
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::SubtractRegion(nsIScriptableRegion *aRegion)
{
nsIntRegion region;
aRegion->GetRegion(®ion);
mRegion.Sub(mRegion, region);
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::SubtractRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
{
mRegion.Sub(mRegion, mozilla::gfx::IntRect(aX, aY, aWidth, aHeight));
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::IsEmpty(bool *isEmpty)
{
*isEmpty = mRegion.IsEmpty();
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::IsEqualRegion(nsIScriptableRegion *aRegion, bool *isEqual)
{
nsIntRegion region;
aRegion->GetRegion(®ion);
*isEqual = mRegion.IsEqual(region);
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::GetBoundingBox(int32_t *aX, int32_t *aY, int32_t *aWidth, int32_t *aHeight)
{
mozilla::gfx::IntRect boundRect = mRegion.GetBounds();
*aX = boundRect.x;
*aY = boundRect.y;
*aWidth = boundRect.width;
*aHeight = boundRect.height;
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::Offset(int32_t aXOffset, int32_t aYOffset)
{
mRegion.MoveBy(aXOffset, aYOffset);
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::ContainsRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight, bool *containsRect)
{
*containsRect = mRegion.Contains(mozilla::gfx::IntRect(aX, aY, aWidth, aHeight));
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::GetRegion(nsIntRegion* outRgn)
{
*outRgn = mRegion;
return NS_OK;
}
NS_IMETHODIMP nsScriptableRegion::GetRects(JSContext* aCx, JS::MutableHandle<JS::Value> aRects)
{
uint32_t numRects = mRegion.GetNumRects();
if (!numRects) {
aRects.setNull();
return NS_OK;
}
JS::Rooted<JSObject*> destArray(aCx, JS_NewArrayObject(aCx, numRects * 4));
if (!destArray) {
return NS_ERROR_OUT_OF_MEMORY;
}
aRects.setObject(*destArray);
uint32_t n = 0;
for (auto iter = mRegion.RectIter(); !iter.Done(); iter.Next()) {
const mozilla::gfx::IntRect& rect = iter.Get();
if (!JS_DefineElement(aCx, destArray, n, rect.x, JSPROP_ENUMERATE) ||
!JS_DefineElement(aCx, destArray, n + 1, rect.y, JSPROP_ENUMERATE) ||
!JS_DefineElement(aCx, destArray, n + 2, rect.width, JSPROP_ENUMERATE) ||
!JS_DefineElement(aCx, destArray, n + 3, rect.height, JSPROP_ENUMERATE)) {
return NS_ERROR_FAILURE;
}
n += 4;
}
return NS_OK;
}
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