1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/src/nsScriptableRegion.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,161 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + *
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "nsScriptableRegion.h"
1.11 +#include <stdint.h> // for uint32_t
1.12 +#include <sys/types.h> // for int32_t
1.13 +#include "js/RootingAPI.h" // for Rooted
1.14 +#include "js/Value.h" // for INT_TO_JSVAL, etc
1.15 +#include "jsapi.h" // for JS_DefineElement, etc
1.16 +#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
1.17 +#include "nsError.h" // for NS_OK, NS_ERROR_FAILURE, etc
1.18 +#include "nsID.h"
1.19 +#include "nsRect.h" // for nsIntRect
1.20 +#include "nscore.h" // for NS_IMETHODIMP
1.21 +
1.22 +class JSObject;
1.23 +struct JSContext;
1.24 +
1.25 +nsScriptableRegion::nsScriptableRegion()
1.26 +{
1.27 +}
1.28 +
1.29 +NS_IMPL_ISUPPORTS(nsScriptableRegion, nsIScriptableRegion)
1.30 +
1.31 +NS_IMETHODIMP nsScriptableRegion::Init()
1.32 +{
1.33 + return NS_OK;
1.34 +}
1.35 +
1.36 +NS_IMETHODIMP nsScriptableRegion::SetToRegion(nsIScriptableRegion *aRegion)
1.37 +{
1.38 + aRegion->GetRegion(&mRegion);
1.39 + return NS_OK;
1.40 +}
1.41 +
1.42 +NS_IMETHODIMP nsScriptableRegion::SetToRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
1.43 +{
1.44 + mRegion = nsIntRect(aX, aY, aWidth, aHeight);
1.45 + return NS_OK;
1.46 +}
1.47 +
1.48 +NS_IMETHODIMP nsScriptableRegion::IntersectRegion(nsIScriptableRegion *aRegion)
1.49 +{
1.50 + nsIntRegion region;
1.51 + aRegion->GetRegion(®ion);
1.52 + mRegion.And(mRegion, region);
1.53 + return NS_OK;
1.54 +}
1.55 +
1.56 +NS_IMETHODIMP nsScriptableRegion::IntersectRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
1.57 +{
1.58 + mRegion.And(mRegion, nsIntRect(aX, aY, aWidth, aHeight));
1.59 + return NS_OK;
1.60 +}
1.61 +
1.62 +NS_IMETHODIMP nsScriptableRegion::UnionRegion(nsIScriptableRegion *aRegion)
1.63 +{
1.64 + nsIntRegion region;
1.65 + aRegion->GetRegion(®ion);
1.66 + mRegion.Or(mRegion, region);
1.67 + return NS_OK;
1.68 +}
1.69 +
1.70 +NS_IMETHODIMP nsScriptableRegion::UnionRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
1.71 +{
1.72 + mRegion.Or(mRegion, nsIntRect(aX, aY, aWidth, aHeight));
1.73 + return NS_OK;
1.74 +}
1.75 +
1.76 +NS_IMETHODIMP nsScriptableRegion::SubtractRegion(nsIScriptableRegion *aRegion)
1.77 +{
1.78 + nsIntRegion region;
1.79 + aRegion->GetRegion(®ion);
1.80 + mRegion.Sub(mRegion, region);
1.81 + return NS_OK;
1.82 +}
1.83 +
1.84 +NS_IMETHODIMP nsScriptableRegion::SubtractRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight)
1.85 +{
1.86 + mRegion.Sub(mRegion, nsIntRect(aX, aY, aWidth, aHeight));
1.87 + return NS_OK;
1.88 +}
1.89 +
1.90 +NS_IMETHODIMP nsScriptableRegion::IsEmpty(bool *isEmpty)
1.91 +{
1.92 + *isEmpty = mRegion.IsEmpty();
1.93 + return NS_OK;
1.94 +}
1.95 +
1.96 +NS_IMETHODIMP nsScriptableRegion::IsEqualRegion(nsIScriptableRegion *aRegion, bool *isEqual)
1.97 +{
1.98 + nsIntRegion region;
1.99 + aRegion->GetRegion(®ion);
1.100 + *isEqual = mRegion.IsEqual(region);
1.101 + return NS_OK;
1.102 +}
1.103 +
1.104 +NS_IMETHODIMP nsScriptableRegion::GetBoundingBox(int32_t *aX, int32_t *aY, int32_t *aWidth, int32_t *aHeight)
1.105 +{
1.106 + nsIntRect boundRect = mRegion.GetBounds();
1.107 + *aX = boundRect.x;
1.108 + *aY = boundRect.y;
1.109 + *aWidth = boundRect.width;
1.110 + *aHeight = boundRect.height;
1.111 + return NS_OK;
1.112 +}
1.113 +
1.114 +NS_IMETHODIMP nsScriptableRegion::Offset(int32_t aXOffset, int32_t aYOffset)
1.115 +{
1.116 + mRegion.MoveBy(aXOffset, aYOffset);
1.117 + return NS_OK;
1.118 +}
1.119 +
1.120 +NS_IMETHODIMP nsScriptableRegion::ContainsRect(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight, bool *containsRect)
1.121 +{
1.122 + *containsRect = mRegion.Contains(nsIntRect(aX, aY, aWidth, aHeight));
1.123 + return NS_OK;
1.124 +}
1.125 +
1.126 +
1.127 +NS_IMETHODIMP nsScriptableRegion::GetRegion(nsIntRegion* outRgn)
1.128 +{
1.129 + *outRgn = mRegion;
1.130 + return NS_OK;
1.131 +}
1.132 +
1.133 +NS_IMETHODIMP nsScriptableRegion::GetRects(JSContext* aCx, JS::MutableHandle<JS::Value> aRects)
1.134 +{
1.135 + uint32_t numRects = mRegion.GetNumRects();
1.136 +
1.137 + if (!numRects) {
1.138 + aRects.setNull();
1.139 + return NS_OK;
1.140 + }
1.141 +
1.142 + JS::Rooted<JSObject*> destArray(aCx, JS_NewArrayObject(aCx, numRects * 4));
1.143 + if (!destArray) {
1.144 + return NS_ERROR_OUT_OF_MEMORY;
1.145 + }
1.146 +
1.147 + aRects.setObject(*destArray);
1.148 +
1.149 + uint32_t n = 0;
1.150 + nsIntRegionRectIterator iter(mRegion);
1.151 + const nsIntRect *rect;
1.152 +
1.153 + while ((rect = iter.Next())) {
1.154 + if (!JS_DefineElement(aCx, destArray, n, INT_TO_JSVAL(rect->x), nullptr, nullptr, JSPROP_ENUMERATE) ||
1.155 + !JS_DefineElement(aCx, destArray, n + 1, INT_TO_JSVAL(rect->y), nullptr, nullptr, JSPROP_ENUMERATE) ||
1.156 + !JS_DefineElement(aCx, destArray, n + 2, INT_TO_JSVAL(rect->width), nullptr, nullptr, JSPROP_ENUMERATE) ||
1.157 + !JS_DefineElement(aCx, destArray, n + 3, INT_TO_JSVAL(rect->height), nullptr, nullptr, JSPROP_ENUMERATE)) {
1.158 + return NS_ERROR_FAILURE;
1.159 + }
1.160 + n += 4;
1.161 + }
1.162 +
1.163 + return NS_OK;
1.164 +}
