The Tor Browser / annotate

layout/inspector/inFlasher.cpp@97036ab72558 (annotated)

layout/inspector/inFlasher.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Tue, 06 Jan 2015 21:39:09 +0100
branch
TOR_BUG_9701
changeset 8
97036ab72558
permissions
-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0 1 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 2 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 4
michael@0 5 #include "inFlasher.h"
michael@0 6 #include "inLayoutUtils.h"
michael@0 7
michael@0 8 #include "nsIDOMElement.h"
michael@0 9 #include "nsIServiceManager.h"
michael@0 10 #include "nsIPresShell.h"
michael@0 11 #include "nsIFrame.h"
michael@0 12 #include "nsIWidget.h"
michael@0 13 #include "nsReadableUtils.h"
michael@0 14 #include "nsRenderingContext.h"
michael@0 15 #include "nsIDOMWindow.h"
michael@0 16 #include "nsIContent.h"
michael@0 17
michael@0 18 #include "prprf.h"
michael@0 19
michael@0 20 ///////////////////////////////////////////////////////////////////////////////
michael@0 21
michael@0 22 inFlasher::inFlasher() :
michael@0 23 mColor(NS_RGB(0,0,0)),
michael@0 24 mThickness(0),
michael@0 25 mInvert(false)
michael@0 26 {
michael@0 27 }
michael@0 28
michael@0 29 inFlasher::~inFlasher()
michael@0 30 {
michael@0 31 }
michael@0 32
michael@0 33 NS_IMPL_ISUPPORTS(inFlasher, inIFlasher)
michael@0 34
michael@0 35 ///////////////////////////////////////////////////////////////////////////////
michael@0 36 // inIFlasher
michael@0 37
michael@0 38 NS_IMETHODIMP
michael@0 39 inFlasher::GetColor(nsAString& aColor)
michael@0 40 {
michael@0 41 // Copied from nsGenericHTMLElement::ColorToString()
michael@0 42 char buf[10];
michael@0 43 PR_snprintf(buf, sizeof(buf), "#%02x%02x%02x",
michael@0 44 NS_GET_R(mColor), NS_GET_G(mColor), NS_GET_B(mColor));
michael@0 45 CopyASCIItoUTF16(buf, aColor);
michael@0 46
michael@0 47 return NS_OK;
michael@0 48 }
michael@0 49
michael@0 50 NS_IMETHODIMP
michael@0 51 inFlasher::SetColor(const nsAString& aColor)
michael@0 52 {
michael@0 53 NS_ENSURE_FALSE(aColor.IsEmpty(), NS_ERROR_ILLEGAL_VALUE);
michael@0 54
michael@0 55 nsAutoString colorStr;
michael@0 56 colorStr.Assign(aColor);
michael@0 57
michael@0 58 if (colorStr.CharAt(0) != '#') {
michael@0 59 if (NS_ColorNameToRGB(colorStr, &mColor)) {
michael@0 60 return NS_OK;
michael@0 61 }
michael@0 62 }
michael@0 63 else {
michael@0 64 colorStr.Cut(0, 1);
michael@0 65 if (NS_HexToRGB(colorStr, &mColor)) {
michael@0 66 return NS_OK;
michael@0 67 }
michael@0 68 }
michael@0 69
michael@0 70 return NS_ERROR_ILLEGAL_VALUE;
michael@0 71 }
michael@0 72
michael@0 73 NS_IMETHODIMP
michael@0 74 inFlasher::GetThickness(uint16_t *aThickness)
michael@0 75 {
michael@0 76 NS_PRECONDITION(aThickness, "Null pointer");
michael@0 77 *aThickness = mThickness;
michael@0 78 return NS_OK;
michael@0 79 }
michael@0 80
michael@0 81 NS_IMETHODIMP
michael@0 82 inFlasher::SetThickness(uint16_t aThickness)
michael@0 83 {
michael@0 84 mThickness = aThickness;
michael@0 85 return NS_OK;
michael@0 86 }
michael@0 87
michael@0 88 NS_IMETHODIMP
michael@0 89 inFlasher::GetInvert(bool *aInvert)
michael@0 90 {
michael@0 91 NS_PRECONDITION(aInvert, "Null pointer");
michael@0 92 *aInvert = mInvert;
michael@0 93 return NS_OK;
michael@0 94 }
michael@0 95
michael@0 96 NS_IMETHODIMP
michael@0 97 inFlasher::SetInvert(bool aInvert)
michael@0 98 {
michael@0 99 mInvert = aInvert;
michael@0 100 return NS_OK;
michael@0 101 }
michael@0 102
michael@0 103 NS_IMETHODIMP
michael@0 104 inFlasher::RepaintElement(nsIDOMElement* aElement)
michael@0 105 {
michael@0 106 NS_ENSURE_ARG_POINTER(aElement);
michael@0 107 nsIFrame* frame = inLayoutUtils::GetFrameFor(aElement);
michael@0 108 if (!frame) return NS_OK;
michael@0 109
michael@0 110 frame->InvalidateFrame();
michael@0 111
michael@0 112 return NS_OK;
michael@0 113 }
michael@0 114
michael@0 115 NS_IMETHODIMP
michael@0 116 inFlasher::DrawElementOutline(nsIDOMElement* aElement)
michael@0 117 {
michael@0 118 NS_ENSURE_ARG_POINTER(aElement);
michael@0 119 nsCOMPtr<nsIDOMWindow> window = inLayoutUtils::GetWindowFor(aElement);
michael@0 120 if (!window) return NS_OK;
michael@0 121 nsCOMPtr<nsIPresShell> presShell = inLayoutUtils::GetPresShellFor(window);
michael@0 122 if (!presShell) return NS_OK;
michael@0 123
michael@0 124 nsIFrame* frame = inLayoutUtils::GetFrameFor(aElement);
michael@0 125
michael@0 126 bool isFirstFrame = true;
michael@0 127
michael@0 128 while (frame) {
michael@0 129 nsPoint offset;
michael@0 130 nsIWidget* widget = frame->GetNearestWidget(offset);
michael@0 131 if (widget) {
michael@0 132 nsRefPtr<nsRenderingContext> rcontext = new nsRenderingContext();
michael@0 133 rcontext->Init(frame->PresContext()->DeviceContext(),
michael@0 134 widget->GetThebesSurface());
michael@0 135
michael@0 136 nsRect rect(offset, frame->GetSize());
michael@0 137 if (mInvert) {
michael@0 138 rcontext->InvertRect(rect);
michael@0 139 }
michael@0 140
michael@0 141 bool isLastFrame = frame->GetNextContinuation() == nullptr;
michael@0 142 DrawOutline(rect.x, rect.y, rect.width, rect.height, rcontext,
michael@0 143 isFirstFrame, isLastFrame);
michael@0 144 isFirstFrame = false;
michael@0 145 }
michael@0 146 frame = frame->GetNextContinuation();
michael@0 147 }
michael@0 148
michael@0 149 return NS_OK;
michael@0 150 }
michael@0 151
michael@0 152 NS_IMETHODIMP
michael@0 153 inFlasher::ScrollElementIntoView(nsIDOMElement *aElement)
michael@0 154 {
michael@0 155 NS_ENSURE_ARG_POINTER(aElement);
michael@0 156 nsCOMPtr<nsIDOMWindow> window = inLayoutUtils::GetWindowFor(aElement);
michael@0 157 if (!window) {
michael@0 158 return NS_OK;
michael@0 159 }
michael@0 160
michael@0 161 nsCOMPtr<nsIPresShell> presShell = inLayoutUtils::GetPresShellFor(window);
michael@0 162 if (!presShell) {
michael@0 163 return NS_OK;
michael@0 164 }
michael@0 165
michael@0 166 nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
michael@0 167 presShell->ScrollContentIntoView(content,
michael@0 168 nsIPresShell::ScrollAxis(),
michael@0 169 nsIPresShell::ScrollAxis(),
michael@0 170 nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
michael@0 171
michael@0 172 return NS_OK;
michael@0 173 }
michael@0 174
michael@0 175 ///////////////////////////////////////////////////////////////////////////////
michael@0 176 // inFlasher
michael@0 177
michael@0 178 void
michael@0 179 inFlasher::DrawOutline(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight,
michael@0 180 nsRenderingContext* aRenderContext,
michael@0 181 bool aDrawBegin, bool aDrawEnd)
michael@0 182 {
michael@0 183 aRenderContext->SetColor(mColor);
michael@0 184
michael@0 185 DrawLine(aX, aY, aWidth, DIR_HORIZONTAL, BOUND_OUTER, aRenderContext);
michael@0 186 if (aDrawBegin) {
michael@0 187 DrawLine(aX, aY, aHeight, DIR_VERTICAL, BOUND_OUTER, aRenderContext);
michael@0 188 }
michael@0 189 DrawLine(aX, aY+aHeight, aWidth, DIR_HORIZONTAL, BOUND_INNER, aRenderContext);
michael@0 190 if (aDrawEnd) {
michael@0 191 DrawLine(aX+aWidth, aY, aHeight, DIR_VERTICAL, BOUND_INNER, aRenderContext);
michael@0 192 }
michael@0 193 }
michael@0 194
michael@0 195 void
michael@0 196 inFlasher::DrawLine(nscoord aX, nscoord aY, nscoord aLength,
michael@0 197 bool aDir, bool aBounds,
michael@0 198 nsRenderingContext* aRenderContext)
michael@0 199 {
michael@0 200 nscoord thickTwips = nsPresContext::CSSPixelsToAppUnits(mThickness);
michael@0 201 if (aDir) { // horizontal
michael@0 202 aRenderContext->FillRect(aX, aY+(aBounds?0:-thickTwips), aLength, thickTwips);
michael@0 203 } else { // vertical
michael@0 204 aRenderContext->FillRect(aX+(aBounds?0:-thickTwips), aY, thickTwips, aLength);
michael@0 205 }
michael@0 206 }

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