/* -*- 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; }