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Diffstat (limited to 'layout/generic/nsFrameSetFrame.cpp')
| -rw-r--r-- | layout/generic/nsFrameSetFrame.cpp | 1534 |
1 files changed, 1534 insertions, 0 deletions
diff --git a/layout/generic/nsFrameSetFrame.cpp b/layout/generic/nsFrameSetFrame.cpp new file mode 100644 index 0000000000..f292988c55 --- /dev/null +++ b/layout/generic/nsFrameSetFrame.cpp @@ -0,0 +1,1534 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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/. */ + +/* rendering object for HTML <frameset> elements */ + +#include "nsFrameSetFrame.h" + +#include "gfxContext.h" +#include "gfxUtils.h" +#include "mozilla/ComputedStyle.h" +#include "mozilla/DebugOnly.h" +#include "mozilla/gfx/2D.h" +#include "mozilla/gfx/Helpers.h" +#include "mozilla/Likely.h" +#include "mozilla/PresShell.h" +#include "mozilla/PresShellInlines.h" + +#include "nsGenericHTMLElement.h" +#include "nsAttrValueInlines.h" +#include "nsLeafFrame.h" +#include "nsContainerFrame.h" +#include "nsLayoutUtils.h" +#include "nsPresContext.h" +#include "nsIContentInlines.h" +#include "nsGkAtoms.h" +#include "nsStyleConsts.h" +#include "nsHTMLParts.h" +#include "nsNameSpaceManager.h" +#include "nsCSSAnonBoxes.h" +#include "mozilla/ServoStyleSet.h" +#include "mozilla/ServoStyleSetInlines.h" +#include "mozilla/dom/Element.h" +#include "nsDisplayList.h" +#include "mozAutoDocUpdate.h" +#include "mozilla/Preferences.h" +#include "mozilla/dom/ChildIterator.h" +#include "mozilla/dom/HTMLFrameSetElement.h" +#include "mozilla/LookAndFeel.h" +#include "mozilla/MouseEvents.h" +#include "nsSubDocumentFrame.h" + +using namespace mozilla; +using namespace mozilla::dom; +using namespace mozilla::gfx; + +// masks for mEdgeVisibility +#define LEFT_VIS 0x0001 +#define RIGHT_VIS 0x0002 +#define TOP_VIS 0x0004 +#define BOTTOM_VIS 0x0008 +#define ALL_VIS 0x000F +#define NONE_VIS 0x0000 + +/******************************************************************************* + * nsFramesetDrag + ******************************************************************************/ +nsFramesetDrag::nsFramesetDrag() { UnSet(); } + +void nsFramesetDrag::Reset(bool aVertical, int32_t aIndex, int32_t aChange, + nsHTMLFramesetFrame* aSource) { + mVertical = aVertical; + mIndex = aIndex; + mChange = aChange; + mSource = aSource; +} + +void nsFramesetDrag::UnSet() { + mVertical = true; + mIndex = -1; + mChange = 0; + mSource = nullptr; +} + +/******************************************************************************* + * nsHTMLFramesetBorderFrame + ******************************************************************************/ +class nsHTMLFramesetBorderFrame final : public nsLeafFrame { + public: + NS_DECL_FRAMEARENA_HELPERS(nsHTMLFramesetBorderFrame) + +#ifdef DEBUG_FRAME_DUMP + virtual nsresult GetFrameName(nsAString& aResult) const override; +#endif + + virtual nsresult HandleEvent(nsPresContext* aPresContext, + WidgetGUIEvent* aEvent, + nsEventStatus* aEventStatus) override; + + Cursor GetCursor(const nsPoint&) override; + + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) override; + + bool GetVisibility() { return mVisibility; } + void SetVisibility(bool aVisibility); + void SetColor(nscolor aColor); + + void PaintBorder(DrawTarget* aDrawTarget, nsPoint aPt); + + protected: + nsHTMLFramesetBorderFrame(ComputedStyle*, nsPresContext*, int32_t aWidth, + bool aVertical, bool aVisible); + virtual ~nsHTMLFramesetBorderFrame(); + virtual nscoord GetIntrinsicISize() override; + virtual nscoord GetIntrinsicBSize() override; + + // the prev and next neighbors are indexes into the row (for a horizontal + // border) or col (for a vertical border) of nsHTMLFramesetFrames or + // nsHTMLFrames + int32_t mPrevNeighbor; + int32_t mNextNeighbor; + nscolor mColor; + int32_t mWidth; + bool mVertical; + bool mVisibility; + bool mCanResize; + friend class nsHTMLFramesetFrame; +}; +/******************************************************************************* + * nsHTMLFramesetBlankFrame + ******************************************************************************/ +class nsHTMLFramesetBlankFrame final : public nsLeafFrame { + public: + NS_DECL_QUERYFRAME + NS_DECL_FRAMEARENA_HELPERS(nsHTMLFramesetBlankFrame) + +#ifdef DEBUG_FRAME_DUMP + virtual nsresult GetFrameName(nsAString& aResult) const override { + return MakeFrameName(u"FramesetBlank"_ns, aResult); + } +#endif + + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) override; + + protected: + explicit nsHTMLFramesetBlankFrame(ComputedStyle* aStyle, + nsPresContext* aPresContext) + : nsLeafFrame(aStyle, aPresContext, kClassID) {} + + virtual ~nsHTMLFramesetBlankFrame(); + virtual nscoord GetIntrinsicISize() override; + virtual nscoord GetIntrinsicBSize() override; + + friend class nsHTMLFramesetFrame; + friend class nsHTMLFrameset; +}; + +/******************************************************************************* + * nsHTMLFramesetFrame + ******************************************************************************/ +bool nsHTMLFramesetFrame::gDragInProgress = false; +#define DEFAULT_BORDER_WIDTH_PX 6 + +nsHTMLFramesetFrame::nsHTMLFramesetFrame(ComputedStyle* aStyle, + nsPresContext* aPresContext) + : nsContainerFrame(aStyle, aPresContext, kClassID) { + mNumRows = 0; + mNumCols = 0; + mEdgeVisibility = 0; + mParentFrameborder = eFrameborder_Yes; // default + mParentBorderWidth = -1; // default not set + mParentBorderColor = NO_COLOR; // default not set + mFirstDragPoint.x = mFirstDragPoint.y = 0; + mMinDrag = nsPresContext::CSSPixelsToAppUnits(2); + mNonBorderChildCount = 0; + mNonBlankChildCount = 0; + mDragger = nullptr; + mChildCount = 0; + mTopLevelFrameset = nullptr; + mEdgeColors.Set(NO_COLOR); +} + +nsHTMLFramesetFrame::~nsHTMLFramesetFrame() = default; + +NS_QUERYFRAME_HEAD(nsHTMLFramesetFrame) + NS_QUERYFRAME_ENTRY(nsHTMLFramesetFrame) +NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame) + +void nsHTMLFramesetFrame::Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) { + nsContainerFrame::Init(aContent, aParent, aPrevInFlow); + // find the highest ancestor that is a frameset + nsIFrame* parentFrame = GetParent(); + mTopLevelFrameset = this; + while (parentFrame) { + nsHTMLFramesetFrame* frameset = do_QueryFrame(parentFrame); + if (frameset) { + mTopLevelFrameset = frameset; + parentFrame = parentFrame->GetParent(); + } else { + break; + } + } + + nsPresContext* presContext = PresContext(); + mozilla::PresShell* presShell = presContext->PresShell(); + + nsFrameborder frameborder = GetFrameBorder(); + int32_t borderWidth = GetBorderWidth(presContext, false); + nscolor borderColor = GetBorderColor(); + + // Get the rows= cols= data + HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent); + NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!"); + const nsFramesetSpec* rowSpecs = nullptr; + const nsFramesetSpec* colSpecs = nullptr; + // GetRowSpec and GetColSpec can fail, but when they do they set + // mNumRows and mNumCols respectively to 0, so we deal with it fine. + ourContent->GetRowSpec(&mNumRows, &rowSpecs); + ourContent->GetColSpec(&mNumCols, &colSpecs); + + static_assert( + NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscoord), + "Maximum value of mNumRows and mNumCols is NS_MAX_FRAMESET_SPEC_COUNT"); + mRowSizes = MakeUnique<nscoord[]>(mNumRows); + mColSizes = MakeUnique<nscoord[]>(mNumCols); + + static_assert( + NS_MAX_FRAMESET_SPEC_COUNT < INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT, + "Should not overflow numCells"); + int32_t numCells = mNumRows * mNumCols; + + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < + UINT_MAX / sizeof(nsHTMLFramesetBorderFrame*), + "Should not overflow nsHTMLFramesetBorderFrame"); + mVerBorders = MakeUnique<nsHTMLFramesetBorderFrame*[]>( + mNumCols); // 1 more than number of ver borders + + for (int verX = 0; verX < mNumCols; verX++) mVerBorders[verX] = nullptr; + + mHorBorders = MakeUnique<nsHTMLFramesetBorderFrame*[]>( + mNumRows); // 1 more than number of hor borders + + for (int horX = 0; horX < mNumRows; horX++) mHorBorders[horX] = nullptr; + + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < + UINT_MAX / sizeof(int32_t) / NS_MAX_FRAMESET_SPEC_COUNT, + "Should not overflow numCells"); + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsFrameborder) / + NS_MAX_FRAMESET_SPEC_COUNT, + "Should not overflow numCells"); + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsBorderColor) / + NS_MAX_FRAMESET_SPEC_COUNT, + "Should not overflow numCells"); + mChildFrameborder = MakeUnique<nsFrameborder[]>(numCells); + mChildBorderColors = MakeUnique<nsBorderColor[]>(numCells); + + // create the children frames; skip content which isn't <frameset> or <frame> + mChildCount = 0; // number of <frame> or <frameset> children + + FlattenedChildIterator children(mContent); + for (nsIContent* child = children.GetNextChild(); child; + child = children.GetNextChild()) { + if (mChildCount == numCells) { + // we have more <frame> or <frameset> than cells + // Clear the lazy bits in the remaining children. Also clear + // the restyle flags, like nsCSSFrameConstructor::ProcessChildren does. + for (; child; child = child->GetNextSibling()) { + child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME); + } + break; + } + child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME); + + // IMPORTANT: This must match the conditions in + // nsCSSFrameConstructor::ContentAppended/Inserted/Removed + if (!child->IsAnyOfHTMLElements(nsGkAtoms::frameset, nsGkAtoms::frame)) { + continue; + } + + // FIXME(emilio): This doesn't even respect display: none, but that matches + // other browsers ;_; + // + // Maybe we should change that though. + RefPtr<ComputedStyle> kidStyle = + ServoStyleSet::ResolveServoStyle(*child->AsElement()); + nsIFrame* frame; + if (child->IsHTMLElement(nsGkAtoms::frameset)) { + frame = NS_NewHTMLFramesetFrame(presShell, kidStyle); + + nsHTMLFramesetFrame* childFrame = (nsHTMLFramesetFrame*)frame; + childFrame->SetParentFrameborder(frameborder); + childFrame->SetParentBorderWidth(borderWidth); + childFrame->SetParentBorderColor(borderColor); + frame->Init(child, this, nullptr); + + mChildBorderColors[mChildCount].Set(childFrame->GetBorderColor()); + } else { // frame + frame = NS_NewSubDocumentFrame(presShell, kidStyle); + + frame->Init(child, this, nullptr); + + mChildFrameborder[mChildCount] = GetFrameBorder(child); + mChildBorderColors[mChildCount].Set(GetBorderColor(child)); + } + child->SetPrimaryFrame(frame); + + mFrames.AppendFrame(nullptr, frame); + + mChildCount++; + } + + mNonBlankChildCount = mChildCount; + // add blank frames for frameset cells that had no content provided + for (int blankX = mChildCount; blankX < numCells; blankX++) { + RefPtr<ComputedStyle> pseudoComputedStyle = + presShell->StyleSet()->ResolveNonInheritingAnonymousBoxStyle( + PseudoStyleType::framesetBlank); + + // XXX the blank frame is using the content of its parent - at some point it + // should just have null content, if we support that + nsHTMLFramesetBlankFrame* blankFrame = new (presShell) + nsHTMLFramesetBlankFrame(pseudoComputedStyle, PresContext()); + + blankFrame->Init(mContent, this, nullptr); + + mFrames.AppendFrame(nullptr, blankFrame); + + mChildBorderColors[mChildCount].Set(NO_COLOR); + mChildCount++; + } + + mNonBorderChildCount = mChildCount; +} + +void nsHTMLFramesetFrame::SetInitialChildList(ChildListID aListID, + nsFrameList&& aChildList) { + // We do this weirdness where we create our child frames in Init(). On the + // other hand, we're going to get a SetInitialChildList() with an empty list + // and null list name after the frame constructor is done creating us. So + // just ignore that call. + if (aListID == FrameChildListID::Principal && aChildList.IsEmpty()) { + return; + } + + nsContainerFrame::SetInitialChildList(aListID, std::move(aChildList)); +} + +// XXX should this try to allocate twips based on an even pixel boundary? +void nsHTMLFramesetFrame::Scale(nscoord aDesired, int32_t aNumIndicies, + int32_t* aIndicies, int32_t aNumItems, + int32_t* aItems) { + int32_t actual = 0; + int32_t i, j; + // get the actual total + for (i = 0; i < aNumIndicies; i++) { + j = aIndicies[i]; + actual += aItems[j]; + } + + if (actual > 0) { + float factor = (float)aDesired / (float)actual; + actual = 0; + // scale the items up or down + for (i = 0; i < aNumIndicies; i++) { + j = aIndicies[i]; + aItems[j] = NSToCoordRound((float)aItems[j] * factor); + actual += aItems[j]; + } + } else if (aNumIndicies != 0) { + // All the specs say zero width, but we have to fill up space + // somehow. Distribute it equally. + nscoord width = NSToCoordRound((float)aDesired / (float)aNumIndicies); + actual = width * aNumIndicies; + for (i = 0; i < aNumIndicies; i++) { + aItems[aIndicies[i]] = width; + } + } + + if (aNumIndicies > 0 && aDesired != actual) { + int32_t unit = (aDesired > actual) ? 1 : -1; + for (i = 0; (i < aNumIndicies) && (aDesired != actual); i++) { + j = aIndicies[i]; + if (j < aNumItems) { + aItems[j] += unit; + actual += unit; + } + } + } +} + +/** + * Translate the rows/cols specs into an array of integer sizes for + * each cell in the frameset. Sizes are allocated based on the priorities of the + * specifier - fixed sizes have the highest priority, percentage sizes have the + * next highest priority and relative sizes have the lowest. + */ +void nsHTMLFramesetFrame::CalculateRowCol(nsPresContext* aPresContext, + nscoord aSize, int32_t aNumSpecs, + const nsFramesetSpec* aSpecs, + nscoord* aValues) { + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(int32_t), + "aNumSpecs maximum value is NS_MAX_FRAMESET_SPEC_COUNT"); + + int32_t fixedTotal = 0; + int32_t numFixed = 0; + auto fixed = MakeUnique<int32_t[]>(aNumSpecs); + int32_t numPercent = 0; + auto percent = MakeUnique<int32_t[]>(aNumSpecs); + int32_t relativeSums = 0; + int32_t numRelative = 0; + auto relative = MakeUnique<int32_t[]>(aNumSpecs); + + if (MOZ_UNLIKELY(!fixed || !percent || !relative)) { + return; // NS_ERROR_OUT_OF_MEMORY + } + + int32_t i, j; + + // initialize the fixed, percent, relative indices, allocate the fixed sizes + // and zero the others + for (i = 0; i < aNumSpecs; i++) { + aValues[i] = 0; + switch (aSpecs[i].mUnit) { + case eFramesetUnit_Fixed: + aValues[i] = nsPresContext::CSSPixelsToAppUnits(aSpecs[i].mValue); + fixedTotal += aValues[i]; + fixed[numFixed] = i; + numFixed++; + break; + case eFramesetUnit_Percent: + percent[numPercent] = i; + numPercent++; + break; + case eFramesetUnit_Relative: + relative[numRelative] = i; + numRelative++; + relativeSums += aSpecs[i].mValue; + break; + } + } + + // scale the fixed sizes if they total too much (or too little and there + // aren't any percent or relative) + if ((fixedTotal > aSize) || + ((fixedTotal < aSize) && (0 == numPercent) && (0 == numRelative))) { + Scale(aSize, numFixed, fixed.get(), aNumSpecs, aValues); + return; + } + + int32_t percentMax = aSize - fixedTotal; + int32_t percentTotal = 0; + // allocate the percentage sizes from what is left over from the fixed + // allocation + for (i = 0; i < numPercent; i++) { + j = percent[i]; + aValues[j] = + NSToCoordRound((float)aSpecs[j].mValue * (float)aSize / 100.0f); + percentTotal += aValues[j]; + } + + // scale the percent sizes if they total too much (or too little and there + // aren't any relative) + if ((percentTotal > percentMax) || + ((percentTotal < percentMax) && (0 == numRelative))) { + Scale(percentMax, numPercent, percent.get(), aNumSpecs, aValues); + return; + } + + int32_t relativeMax = percentMax - percentTotal; + int32_t relativeTotal = 0; + // allocate the relative sizes from what is left over from the percent + // allocation + for (i = 0; i < numRelative; i++) { + j = relative[i]; + aValues[j] = NSToCoordRound((float)aSpecs[j].mValue * (float)relativeMax / + (float)relativeSums); + relativeTotal += aValues[j]; + } + + // scale the relative sizes if they take up too much or too little + if (relativeTotal != relativeMax) { + Scale(relativeMax, numRelative, relative.get(), aNumSpecs, aValues); + } +} + +/** + * Translate the rows/cols integer sizes into an array of specs for + * each cell in the frameset. Reverse of CalculateRowCol() behaviour. + * This allows us to maintain the user size info through reflows. + */ +void nsHTMLFramesetFrame::GenerateRowCol(nsPresContext* aPresContext, + nscoord aSize, int32_t aNumSpecs, + const nsFramesetSpec* aSpecs, + nscoord* aValues, nsString& aNewAttr) { + int32_t i; + + for (i = 0; i < aNumSpecs; i++) { + if (!aNewAttr.IsEmpty()) aNewAttr.Append(char16_t(',')); + + switch (aSpecs[i].mUnit) { + case eFramesetUnit_Fixed: + aNewAttr.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(aValues[i])); + break; + case eFramesetUnit_Percent: // XXX Only accurate to 1%, need 1 pixel + case eFramesetUnit_Relative: + // Add 0.5 to the percentage to make rounding work right. + aNewAttr.AppendInt(uint32_t((100.0 * aValues[i]) / aSize + 0.5)); + aNewAttr.Append(char16_t('%')); + break; + } + } +} + +int32_t nsHTMLFramesetFrame::GetBorderWidth(nsPresContext* aPresContext, + bool aTakeForcingIntoAccount) { + nsFrameborder frameborder = GetFrameBorder(); + if (frameborder == eFrameborder_No) { + return 0; + } + nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent); + + if (content) { + const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::border); + if (attr) { + int32_t intVal = 0; + if (attr->Type() == nsAttrValue::eInteger) { + intVal = attr->GetIntegerValue(); + if (intVal < 0) { + intVal = 0; + } + } + + return nsPresContext::CSSPixelsToAppUnits(intVal); + } + } + + if (mParentBorderWidth >= 0) { + return mParentBorderWidth; + } + + return nsPresContext::CSSPixelsToAppUnits(DEFAULT_BORDER_WIDTH_PX); +} + +void nsHTMLFramesetFrame::GetDesiredSize(nsPresContext* aPresContext, + const ReflowInput& aReflowInput, + ReflowOutput& aDesiredSize) { + WritingMode wm = aReflowInput.GetWritingMode(); + LogicalSize desiredSize(wm); + nsHTMLFramesetFrame* framesetParent = do_QueryFrame(GetParent()); + if (nullptr == framesetParent) { + if (aPresContext->IsPaginated()) { + // XXX This needs to be changed when framesets paginate properly + desiredSize.ISize(wm) = aReflowInput.AvailableISize(); + desiredSize.BSize(wm) = aReflowInput.AvailableBSize(); + } else { + LogicalSize area(wm, aPresContext->GetVisibleArea().Size()); + + desiredSize.ISize(wm) = area.ISize(wm); + desiredSize.BSize(wm) = area.BSize(wm); + } + } else { + LogicalSize size(wm); + framesetParent->GetSizeOfChild(this, wm, size); + desiredSize.ISize(wm) = size.ISize(wm); + desiredSize.BSize(wm) = size.BSize(wm); + } + aDesiredSize.SetSize(wm, desiredSize); +} + +// only valid for non border children +void nsHTMLFramesetFrame::GetSizeOfChildAt(int32_t aIndexInParent, + WritingMode aWM, LogicalSize& aSize, + nsIntPoint& aCellIndex) { + int32_t row = aIndexInParent / mNumCols; + int32_t col = aIndexInParent - + (row * mNumCols); // remainder from dividing index by mNumCols + if ((row < mNumRows) && (col < mNumCols)) { + aSize.ISize(aWM) = mColSizes[col]; + aSize.BSize(aWM) = mRowSizes[row]; + aCellIndex.x = col; + aCellIndex.y = row; + } else { + aSize.SizeTo(aWM, 0, 0); + aCellIndex.x = aCellIndex.y = 0; + } +} + +// only valid for non border children +void nsHTMLFramesetFrame::GetSizeOfChild(nsIFrame* aChild, WritingMode aWM, + LogicalSize& aSize) { + // Reflow only creates children frames for <frameset> and <frame> content. + // this assumption is used here + int i = 0; + for (nsIFrame* child : mFrames) { + if (aChild == child) { + nsIntPoint ignore; + GetSizeOfChildAt(i, aWM, aSize, ignore); + return; + } + i++; + } + aSize.SizeTo(aWM, 0, 0); +} + +nsresult nsHTMLFramesetFrame::HandleEvent(nsPresContext* aPresContext, + WidgetGUIEvent* aEvent, + nsEventStatus* aEventStatus) { + NS_ENSURE_ARG_POINTER(aEventStatus); + if (mDragger) { + // the nsFramesetBorderFrame has captured NS_MOUSE_DOWN + switch (aEvent->mMessage) { + case eMouseMove: + MouseDrag(aPresContext, aEvent); + break; + case eMouseUp: + if (aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) { + EndMouseDrag(aPresContext); + } + break; + default: + break; + } + *aEventStatus = nsEventStatus_eConsumeNoDefault; + } else { + *aEventStatus = nsEventStatus_eIgnore; + } + return NS_OK; +} + +nsIFrame::Cursor nsHTMLFramesetFrame::GetCursor(const nsPoint&) { + auto kind = StyleCursorKind::Default; + if (mDragger) { + kind = mDragger->mVertical ? StyleCursorKind::EwResize + : StyleCursorKind::NsResize; + } + return Cursor{kind, AllowCustomCursorImage::No}; +} + +void nsHTMLFramesetFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) { + BuildDisplayListForInline(aBuilder, aLists); + + if (mDragger && aBuilder->IsForEventDelivery()) { + aLists.Content()->AppendNewToTop<nsDisplayEventReceiver>(aBuilder, this); + } +} + +void nsHTMLFramesetFrame::ReflowPlaceChild(nsIFrame* aChild, + nsPresContext* aPresContext, + const ReflowInput& aReflowInput, + nsPoint& aOffset, nsSize& aSize, + nsIntPoint* aCellIndex) { + // reflow the child + ReflowInput reflowInput(aPresContext, aReflowInput, aChild, + LogicalSize(aChild->GetWritingMode(), aSize)); + reflowInput.SetComputedWidth(std::max( + 0, + aSize.width - reflowInput.ComputedPhysicalBorderPadding().LeftRight())); + reflowInput.SetComputedHeight(std::max( + 0, + aSize.height - reflowInput.ComputedPhysicalBorderPadding().TopBottom())); + ReflowOutput reflowOutput(aReflowInput); + reflowOutput.Width() = aSize.width; + reflowOutput.Height() = aSize.height; + nsReflowStatus status; + + ReflowChild(aChild, aPresContext, reflowOutput, reflowInput, aOffset.x, + aOffset.y, ReflowChildFlags::Default, status); + NS_ASSERTION(status.IsComplete(), "bad status"); + + // Place and size the child + reflowOutput.Width() = aSize.width; + reflowOutput.Height() = aSize.height; + FinishReflowChild(aChild, aPresContext, reflowOutput, &reflowInput, aOffset.x, + aOffset.y, ReflowChildFlags::Default); +} + +static nsFrameborder GetFrameBorderHelper(nsGenericHTMLElement* aContent) { + if (nullptr != aContent) { + const nsAttrValue* attr = aContent->GetParsedAttr(nsGkAtoms::frameborder); + if (attr && attr->Type() == nsAttrValue::eEnum) { + switch (static_cast<FrameBorderProperty>(attr->GetEnumValue())) { + case FrameBorderProperty::Yes: + case FrameBorderProperty::One: + return eFrameborder_Yes; + + case FrameBorderProperty::No: + case FrameBorderProperty::Zero: + return eFrameborder_No; + } + } + } + return eFrameborder_Notset; +} + +nsFrameborder nsHTMLFramesetFrame::GetFrameBorder() { + nsFrameborder result = eFrameborder_Notset; + nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent); + + if (content) { + result = GetFrameBorderHelper(content); + } + if (eFrameborder_Notset == result) { + return mParentFrameborder; + } + return result; +} + +nsFrameborder nsHTMLFramesetFrame::GetFrameBorder(nsIContent* aContent) { + nsFrameborder result = eFrameborder_Notset; + + nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(aContent); + + if (content) { + result = GetFrameBorderHelper(content); + } + if (eFrameborder_Notset == result) { + return GetFrameBorder(); + } + return result; +} + +nscolor nsHTMLFramesetFrame::GetBorderColor() { + nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent); + + if (content) { + const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor); + if (attr) { + nscolor color; + if (attr->GetColorValue(color)) { + return color; + } + } + } + + return mParentBorderColor; +} + +nscolor nsHTMLFramesetFrame::GetBorderColor(nsIContent* aContent) { + nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(aContent); + + if (content) { + const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor); + if (attr) { + nscolor color; + if (attr->GetColorValue(color)) { + return color; + } + } + } + return GetBorderColor(); +} + +void nsHTMLFramesetFrame::Reflow(nsPresContext* aPresContext, + ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) { + MarkInReflow(); + DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetFrame"); + DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus); + MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!"); + + mozilla::PresShell* presShell = aPresContext->PresShell(); + ServoStyleSet* styleSet = presShell->StyleSet(); + + GetParent()->AddStateBits(NS_FRAME_CONTAINS_RELATIVE_BSIZE); + + // printf("FramesetFrame2::Reflow %X (%d,%d) \n", this, + // aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()); + // Always get the size so that the caller knows how big we are + GetDesiredSize(aPresContext, aReflowInput, aDesiredSize); + + nscoord width = (aDesiredSize.Width() <= aReflowInput.AvailableWidth()) + ? aDesiredSize.Width() + : aReflowInput.AvailableWidth(); + nscoord height = (aDesiredSize.Height() <= aReflowInput.AvailableHeight()) + ? aDesiredSize.Height() + : aReflowInput.AvailableHeight(); + + // We might be reflowed more than once with NS_FRAME_FIRST_REFLOW; + // that's allowed. (Though it will only happen for misuse of frameset + // that includes it within other content.) So measure firstTime by + // what we care about, which is whether we've processed the data we + // process below if firstTime is true. + MOZ_ASSERT(!mChildFrameborder == !mChildBorderColors); + bool firstTime = !!mChildFrameborder; + + // subtract out the width of all of the potential borders. There are + // only borders between <frame>s. There are none on the edges (e.g the + // leftmost <frame> has no left border). + int32_t borderWidth = GetBorderWidth(aPresContext, true); + + width -= (mNumCols - 1) * borderWidth; + if (width < 0) width = 0; + + height -= (mNumRows - 1) * borderWidth; + if (height < 0) height = 0; + + HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent); + NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!"); + const nsFramesetSpec* rowSpecs = nullptr; + const nsFramesetSpec* colSpecs = nullptr; + int32_t rows = 0; + int32_t cols = 0; + ourContent->GetRowSpec(&rows, &rowSpecs); + ourContent->GetColSpec(&cols, &colSpecs); + // If the number of cols or rows has changed, the frame for the frameset + // will be re-created. + if (mNumRows != rows || mNumCols != cols) { + mDrag.UnSet(); + return; + } + + CalculateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes.get()); + CalculateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes.get()); + + UniquePtr<bool[]> verBordersVis; // vertical borders visibility + UniquePtr<nscolor[]> verBorderColors; + UniquePtr<bool[]> horBordersVis; // horizontal borders visibility + UniquePtr<nscolor[]> horBorderColors; + nscolor borderColor = GetBorderColor(); + nsFrameborder frameborder = GetFrameBorder(); + + if (firstTime) { + // Check for overflow in memory allocations using mNumCols and mNumRows + // which have a maxium value of NS_MAX_FRAMESET_SPEC_COUNT. + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(bool), + "Check for overflow"); + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscolor), + "Check for overflow"); + + verBordersVis = MakeUnique<bool[]>(mNumCols); + verBorderColors = MakeUnique<nscolor[]>(mNumCols); + for (int verX = 0; verX < mNumCols; verX++) { + verBordersVis[verX] = false; + verBorderColors[verX] = NO_COLOR; + } + + horBordersVis = MakeUnique<bool[]>(mNumRows); + horBorderColors = MakeUnique<nscolor[]>(mNumRows); + for (int horX = 0; horX < mNumRows; horX++) { + horBordersVis[horX] = false; + horBorderColors[horX] = NO_COLOR; + } + } + + // reflow the children + int32_t lastRow = 0; + int32_t lastCol = 0; + int32_t borderChildX = mNonBorderChildCount; // index of border children + nsHTMLFramesetBorderFrame* borderFrame = nullptr; + nsPoint offset(0, 0); + nsSize size, lastSize; + WritingMode wm = GetWritingMode(); + LogicalSize logicalSize(wm); + nsIFrame* child = mFrames.FirstChild(); + + for (int32_t childX = 0; childX < mNonBorderChildCount; childX++) { + nsIntPoint cellIndex; + GetSizeOfChildAt(childX, wm, logicalSize, cellIndex); + size = logicalSize.GetPhysicalSize(wm); + + if (lastRow != cellIndex.y) { // changed to next row + offset.x = 0; + offset.y += lastSize.height; + if (firstTime) { // create horizontal border + + RefPtr<ComputedStyle> pseudoComputedStyle; + pseudoComputedStyle = styleSet->ResolveNonInheritingAnonymousBoxStyle( + PseudoStyleType::horizontalFramesetBorder); + + borderFrame = new (presShell) nsHTMLFramesetBorderFrame( + pseudoComputedStyle, PresContext(), borderWidth, false, false); + borderFrame->Init(mContent, this, nullptr); + mChildCount++; + mFrames.AppendFrame(nullptr, borderFrame); + mHorBorders[cellIndex.y - 1] = borderFrame; + // set the neighbors for determining drag boundaries + borderFrame->mPrevNeighbor = lastRow; + borderFrame->mNextNeighbor = cellIndex.y; + } else { + borderFrame = (nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX); + borderFrame->mWidth = borderWidth; + borderChildX++; + } + nsSize borderSize(aDesiredSize.Width(), borderWidth); + ReflowPlaceChild(borderFrame, aPresContext, aReflowInput, offset, + borderSize); + borderFrame = nullptr; + offset.y += borderWidth; + } else { + if (cellIndex.x > 0) { // moved to next col in same row + if (0 == cellIndex.y) { // in 1st row + if (firstTime) { // create vertical border + + RefPtr<ComputedStyle> pseudoComputedStyle; + pseudoComputedStyle = + styleSet->ResolveNonInheritingAnonymousBoxStyle( + PseudoStyleType::verticalFramesetBorder); + + borderFrame = new (presShell) nsHTMLFramesetBorderFrame( + pseudoComputedStyle, PresContext(), borderWidth, true, false); + borderFrame->Init(mContent, this, nullptr); + mChildCount++; + mFrames.AppendFrame(nullptr, borderFrame); + mVerBorders[cellIndex.x - 1] = borderFrame; + // set the neighbors for determining drag boundaries + borderFrame->mPrevNeighbor = lastCol; + borderFrame->mNextNeighbor = cellIndex.x; + } else { + borderFrame = + (nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX); + borderFrame->mWidth = borderWidth; + borderChildX++; + } + nsSize borderSize(borderWidth, aDesiredSize.Height()); + ReflowPlaceChild(borderFrame, aPresContext, aReflowInput, offset, + borderSize); + borderFrame = nullptr; + } + offset.x += borderWidth; + } + } + + ReflowPlaceChild(child, aPresContext, aReflowInput, offset, size, + &cellIndex); + + if (firstTime) { + int32_t childVis; + nsHTMLFramesetFrame* framesetFrame = do_QueryFrame(child); + if (framesetFrame) { + childVis = framesetFrame->mEdgeVisibility; + mChildBorderColors[childX] = framesetFrame->mEdgeColors; + } else if (child->IsSubDocumentFrame()) { + if (eFrameborder_Yes == mChildFrameborder[childX]) { + childVis = ALL_VIS; + } else if (eFrameborder_No == mChildFrameborder[childX]) { + childVis = NONE_VIS; + } else { // notset + childVis = (eFrameborder_No == frameborder) ? NONE_VIS : ALL_VIS; + } + } else { // blank +#ifdef DEBUG + nsHTMLFramesetBlankFrame* blank = do_QueryFrame(child); + MOZ_ASSERT(blank, "unexpected child frame type"); +#endif + childVis = NONE_VIS; + } + nsBorderColor childColors = mChildBorderColors[childX]; + // set the visibility, color of our edge borders based on children + if (0 == cellIndex.x) { + if (!(mEdgeVisibility & LEFT_VIS)) { + mEdgeVisibility |= (LEFT_VIS & childVis); + } + if (NO_COLOR == mEdgeColors.mLeft) { + mEdgeColors.mLeft = childColors.mLeft; + } + } + if (0 == cellIndex.y) { + if (!(mEdgeVisibility & TOP_VIS)) { + mEdgeVisibility |= (TOP_VIS & childVis); + } + if (NO_COLOR == mEdgeColors.mTop) { + mEdgeColors.mTop = childColors.mTop; + } + } + if (mNumCols - 1 == cellIndex.x) { + if (!(mEdgeVisibility & RIGHT_VIS)) { + mEdgeVisibility |= (RIGHT_VIS & childVis); + } + if (NO_COLOR == mEdgeColors.mRight) { + mEdgeColors.mRight = childColors.mRight; + } + } + if (mNumRows - 1 == cellIndex.y) { + if (!(mEdgeVisibility & BOTTOM_VIS)) { + mEdgeVisibility |= (BOTTOM_VIS & childVis); + } + if (NO_COLOR == mEdgeColors.mBottom) { + mEdgeColors.mBottom = childColors.mBottom; + } + } + // set the visibility of borders that the child may affect + if (childVis & RIGHT_VIS) { + verBordersVis[cellIndex.x] = true; + } + if (childVis & BOTTOM_VIS) { + horBordersVis[cellIndex.y] = true; + } + if ((cellIndex.x > 0) && (childVis & LEFT_VIS)) { + verBordersVis[cellIndex.x - 1] = true; + } + if ((cellIndex.y > 0) && (childVis & TOP_VIS)) { + horBordersVis[cellIndex.y - 1] = true; + } + // set the colors of borders that the child may affect + if (NO_COLOR == verBorderColors[cellIndex.x]) { + verBorderColors[cellIndex.x] = mChildBorderColors[childX].mRight; + } + if (NO_COLOR == horBorderColors[cellIndex.y]) { + horBorderColors[cellIndex.y] = mChildBorderColors[childX].mBottom; + } + if ((cellIndex.x > 0) && (NO_COLOR == verBorderColors[cellIndex.x - 1])) { + verBorderColors[cellIndex.x - 1] = mChildBorderColors[childX].mLeft; + } + if ((cellIndex.y > 0) && (NO_COLOR == horBorderColors[cellIndex.y - 1])) { + horBorderColors[cellIndex.y - 1] = mChildBorderColors[childX].mTop; + } + } + lastRow = cellIndex.y; + lastCol = cellIndex.x; + lastSize = size; + offset.x += size.width; + child = child->GetNextSibling(); + } + + if (firstTime) { + nscolor childColor; + // set the visibility, color, mouse sensitivity of borders + for (int verX = 0; verX < mNumCols - 1; verX++) { + if (mVerBorders[verX]) { + mVerBorders[verX]->SetVisibility(verBordersVis[verX]); + SetBorderResize(mVerBorders[verX]); + childColor = (NO_COLOR == verBorderColors[verX]) + ? borderColor + : verBorderColors[verX]; + mVerBorders[verX]->SetColor(childColor); + } + } + for (int horX = 0; horX < mNumRows - 1; horX++) { + if (mHorBorders[horX]) { + mHorBorders[horX]->SetVisibility(horBordersVis[horX]); + SetBorderResize(mHorBorders[horX]); + childColor = (NO_COLOR == horBorderColors[horX]) + ? borderColor + : horBorderColors[horX]; + mHorBorders[horX]->SetColor(childColor); + } + } + + mChildFrameborder.reset(); + mChildBorderColors.reset(); + } + + mDrag.UnSet(); + + aDesiredSize.SetOverflowAreasToDesiredBounds(); + FinishAndStoreOverflow(&aDesiredSize); +} + +#ifdef DEBUG_FRAME_DUMP +nsresult nsHTMLFramesetFrame::GetFrameName(nsAString& aResult) const { + return MakeFrameName(u"Frameset"_ns, aResult); +} +#endif + +bool nsHTMLFramesetFrame::CanResize(bool aVertical, bool aLeft) { + int32_t childX; + int32_t startX; + if (aVertical) { + startX = (aLeft) ? 0 : mNumCols - 1; + for (childX = startX; childX < mNonBorderChildCount; childX += mNumCols) { + if (!CanChildResize(aVertical, aLeft, childX)) { + return false; + } + } + } else { + startX = (aLeft) ? 0 : (mNumRows - 1) * mNumCols; + int32_t endX = startX + mNumCols; + for (childX = startX; childX < endX; childX++) { + if (!CanChildResize(aVertical, aLeft, childX)) { + return false; + } + } + } + return true; +} + +bool nsHTMLFramesetFrame::GetNoResize(nsIFrame* aChildFrame) { + nsIContent* content = aChildFrame->GetContent(); + + return content && content->IsElement() && + content->AsElement()->HasAttr(nsGkAtoms::noresize); +} + +bool nsHTMLFramesetFrame::CanChildResize(bool aVertical, bool aLeft, + int32_t aChildX) { + nsIFrame* child = mFrames.FrameAt(aChildX); + nsHTMLFramesetFrame* frameset = do_QueryFrame(child); + return frameset ? frameset->CanResize(aVertical, aLeft) : !GetNoResize(child); +} + +// This calculates and sets the resizability of all border frames + +void nsHTMLFramesetFrame::RecalculateBorderResize() { + if (!mContent) { + return; + } + + static_assert( + NS_MAX_FRAMESET_SPEC_COUNT < INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT, + "Check for overflow"); + static_assert(NS_MAX_FRAMESET_SPEC_COUNT < + UINT_MAX / sizeof(int32_t) / NS_MAX_FRAMESET_SPEC_COUNT, + "Check for overflow"); + // set the visibility and mouse sensitivity of borders + int32_t verX; + for (verX = 0; verX < mNumCols - 1; verX++) { + if (mVerBorders[verX]) { + mVerBorders[verX]->mCanResize = true; + SetBorderResize(mVerBorders[verX]); + } + } + int32_t horX; + for (horX = 0; horX < mNumRows - 1; horX++) { + if (mHorBorders[horX]) { + mHorBorders[horX]->mCanResize = true; + SetBorderResize(mHorBorders[horX]); + } + } +} + +void nsHTMLFramesetFrame::SetBorderResize( + nsHTMLFramesetBorderFrame* aBorderFrame) { + if (aBorderFrame->mVertical) { + for (int rowX = 0; rowX < mNumRows; rowX++) { + int32_t childX = aBorderFrame->mPrevNeighbor + (rowX * mNumCols); + if (!CanChildResize(true, false, childX) || + !CanChildResize(true, true, childX + 1)) { + aBorderFrame->mCanResize = false; + } + } + } else { + int32_t childX = aBorderFrame->mPrevNeighbor * mNumCols; + int32_t endX = childX + mNumCols; + for (; childX < endX; childX++) { + if (!CanChildResize(false, false, childX)) { + aBorderFrame->mCanResize = false; + } + } + endX = endX + mNumCols; + for (; childX < endX; childX++) { + if (!CanChildResize(false, true, childX)) { + aBorderFrame->mCanResize = false; + } + } + } +} + +void nsHTMLFramesetFrame::StartMouseDrag(nsPresContext* aPresContext, + nsHTMLFramesetBorderFrame* aBorder, + WidgetGUIEvent* aEvent) { +#if 0 + int32_t index; + IndexOf(aBorder, index); + NS_ASSERTION((nullptr != aBorder) && (index >= 0), "invalid dragger"); +#endif + + PresShell::SetCapturingContent(GetContent(), + CaptureFlags::IgnoreAllowedState); + + mDragger = aBorder; + + mFirstDragPoint = aEvent->mRefPoint; + + // Store the original frame sizes + if (mDragger->mVertical) { + mPrevNeighborOrigSize = mColSizes[mDragger->mPrevNeighbor]; + mNextNeighborOrigSize = mColSizes[mDragger->mNextNeighbor]; + } else { + mPrevNeighborOrigSize = mRowSizes[mDragger->mPrevNeighbor]; + mNextNeighborOrigSize = mRowSizes[mDragger->mNextNeighbor]; + } + + gDragInProgress = true; +} + +void nsHTMLFramesetFrame::MouseDrag(nsPresContext* aPresContext, + WidgetGUIEvent* aEvent) { + // if the capture ended, reset the drag state + if (PresShell::GetCapturingContent() != GetContent()) { + mDragger = nullptr; + gDragInProgress = false; + return; + } + + int32_t change; // measured positive from left-to-right or top-to-bottom + AutoWeakFrame weakFrame(this); + if (mDragger->mVertical) { + change = aPresContext->DevPixelsToAppUnits(aEvent->mRefPoint.x - + mFirstDragPoint.x); + if (change > mNextNeighborOrigSize - mMinDrag) { + change = mNextNeighborOrigSize - mMinDrag; + } else if (change <= mMinDrag - mPrevNeighborOrigSize) { + change = mMinDrag - mPrevNeighborOrigSize; + } + mColSizes[mDragger->mPrevNeighbor] = mPrevNeighborOrigSize + change; + mColSizes[mDragger->mNextNeighbor] = mNextNeighborOrigSize - change; + + if (change != 0) { + // Recompute the specs from the new sizes. + nscoord width = + mRect.width - (mNumCols - 1) * GetBorderWidth(aPresContext, true); + HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent); + NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!"); + const nsFramesetSpec* colSpecs = nullptr; + ourContent->GetColSpec(&mNumCols, &colSpecs); + nsAutoString newColAttr; + GenerateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes.get(), + newColAttr); + // Setting the attr will trigger a reflow + mContent->AsElement()->SetAttr(kNameSpaceID_None, nsGkAtoms::cols, + newColAttr, true); + } + } else { + change = aPresContext->DevPixelsToAppUnits(aEvent->mRefPoint.y - + mFirstDragPoint.y); + if (change > mNextNeighborOrigSize - mMinDrag) { + change = mNextNeighborOrigSize - mMinDrag; + } else if (change <= mMinDrag - mPrevNeighborOrigSize) { + change = mMinDrag - mPrevNeighborOrigSize; + } + mRowSizes[mDragger->mPrevNeighbor] = mPrevNeighborOrigSize + change; + mRowSizes[mDragger->mNextNeighbor] = mNextNeighborOrigSize - change; + + if (change != 0) { + // Recompute the specs from the new sizes. + nscoord height = + mRect.height - (mNumRows - 1) * GetBorderWidth(aPresContext, true); + HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent); + NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!"); + const nsFramesetSpec* rowSpecs = nullptr; + ourContent->GetRowSpec(&mNumRows, &rowSpecs); + nsAutoString newRowAttr; + GenerateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes.get(), + newRowAttr); + // Setting the attr will trigger a reflow + mContent->AsElement()->SetAttr(kNameSpaceID_None, nsGkAtoms::rows, + newRowAttr, true); + } + } + + NS_ENSURE_TRUE_VOID(weakFrame.IsAlive()); + if (change != 0) { + mDrag.Reset(mDragger->mVertical, mDragger->mPrevNeighbor, change, this); + } +} + +void nsHTMLFramesetFrame::EndMouseDrag(nsPresContext* aPresContext) { + PresShell::ReleaseCapturingContent(); + mDragger = nullptr; + gDragInProgress = false; +} + +nsIFrame* NS_NewHTMLFramesetFrame(PresShell* aPresShell, + ComputedStyle* aStyle) { +#ifdef DEBUG + const nsStyleDisplay* disp = aStyle->StyleDisplay(); + NS_ASSERTION(!disp->IsAbsolutelyPositionedStyle() && !disp->IsFloatingStyle(), + "Framesets should not be positioned and should not float"); +#endif + + return new (aPresShell) + nsHTMLFramesetFrame(aStyle, aPresShell->GetPresContext()); +} + +NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetFrame) + +/******************************************************************************* + * nsHTMLFramesetBorderFrame + ******************************************************************************/ +nsHTMLFramesetBorderFrame::nsHTMLFramesetBorderFrame( + ComputedStyle* aStyle, nsPresContext* aPresContext, int32_t aWidth, + bool aVertical, bool aVisibility) + : nsLeafFrame(aStyle, aPresContext, kClassID), + mWidth(aWidth), + mVertical(aVertical), + mVisibility(aVisibility) { + mCanResize = true; + mColor = NO_COLOR; + mPrevNeighbor = 0; + mNextNeighbor = 0; +} + +nsHTMLFramesetBorderFrame::~nsHTMLFramesetBorderFrame() { + // printf("nsHTMLFramesetBorderFrame destructor %p \n", this); +} + +NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetBorderFrame) + +nscoord nsHTMLFramesetBorderFrame::GetIntrinsicISize() { + // No intrinsic width + return 0; +} + +nscoord nsHTMLFramesetBorderFrame::GetIntrinsicBSize() { + // No intrinsic height + return 0; +} + +void nsHTMLFramesetBorderFrame::SetVisibility(bool aVisibility) { + mVisibility = aVisibility; +} + +void nsHTMLFramesetBorderFrame::SetColor(nscolor aColor) { mColor = aColor; } + +void nsHTMLFramesetBorderFrame::Reflow(nsPresContext* aPresContext, + ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) { + DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetBorderFrame"); + DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus); + MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!"); + + // Override Reflow(), since we don't want to deal with what our + // computed values are. + SizeToAvailSize(aReflowInput, aDesiredSize); + + aDesiredSize.SetOverflowAreasToDesiredBounds(); +} + +class nsDisplayFramesetBorder : public nsPaintedDisplayItem { + public: + nsDisplayFramesetBorder(nsDisplayListBuilder* aBuilder, + nsHTMLFramesetBorderFrame* aFrame) + : nsPaintedDisplayItem(aBuilder, aFrame) { + MOZ_COUNT_CTOR(nsDisplayFramesetBorder); + } + MOZ_COUNTED_DTOR_OVERRIDE(nsDisplayFramesetBorder) + + // REVIEW: see old GetFrameForPoint + // Receives events in its bounds + virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect, + HitTestState* aState, + nsTArray<nsIFrame*>* aOutFrames) override { + aOutFrames->AppendElement(mFrame); + } + virtual void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override; + NS_DISPLAY_DECL_NAME("FramesetBorder", TYPE_FRAMESET_BORDER) +}; + +void nsDisplayFramesetBorder::Paint(nsDisplayListBuilder* aBuilder, + gfxContext* aCtx) { + static_cast<nsHTMLFramesetBorderFrame*>(mFrame)->PaintBorder( + aCtx->GetDrawTarget(), ToReferenceFrame()); +} + +void nsHTMLFramesetBorderFrame::BuildDisplayList( + nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) { + aLists.Content()->AppendNewToTop<nsDisplayFramesetBorder>(aBuilder, this); +} + +void nsHTMLFramesetBorderFrame::PaintBorder(DrawTarget* aDrawTarget, + nsPoint aPt) { + nscoord widthInPixels = nsPresContext::AppUnitsToIntCSSPixels(mWidth); + nscoord pixelWidth = nsPresContext::CSSPixelsToAppUnits(1); + + if (widthInPixels <= 0) return; + + ColorPattern bgColor(ToDeviceColor(LookAndFeel::Color( + LookAndFeel::ColorID::Window, this, NS_RGB(200, 200, 200)))); + + ColorPattern fgColor(ToDeviceColor(LookAndFeel::Color( + LookAndFeel::ColorID::Windowtext, this, NS_RGB(0, 0, 0)))); + + ColorPattern hltColor(ToDeviceColor(LookAndFeel::Color( + LookAndFeel::ColorID::Threedhighlight, this, NS_RGB(255, 255, 255)))); + + ColorPattern sdwColor(ToDeviceColor(LookAndFeel::Color( + LookAndFeel::ColorID::Threedshadow, this, NS_RGB(128, 128, 128)))); + + ColorPattern color(ToDeviceColor(NS_RGB(255, 255, 255))); // default to white + if (mVisibility) { + color = + (NO_COLOR == mColor) ? bgColor : ColorPattern(ToDeviceColor(mColor)); + } + + int32_t appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel(); + + Point toRefFrame = NSPointToPoint(aPt, appUnitsPerDevPixel); + + AutoRestoreTransform autoRestoreTransform(aDrawTarget); + aDrawTarget->SetTransform( + aDrawTarget->GetTransform().PreTranslate(toRefFrame)); + + nsPoint start(0, 0); + nsPoint end = mVertical ? nsPoint(0, mRect.height) : nsPoint(mRect.width, 0); + + // draw grey or white first + for (int i = 0; i < widthInPixels; i++) { + StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget, + color); + if (mVertical) { + start.x += pixelWidth; + end.x = start.x; + } else { + start.y += pixelWidth; + end.y = start.y; + } + } + + if (!mVisibility) return; + + if (widthInPixels >= 5) { + start.x = (mVertical) ? pixelWidth : 0; + start.y = (mVertical) ? 0 : pixelWidth; + end.x = (mVertical) ? start.x : mRect.width; + end.y = (mVertical) ? mRect.height : start.y; + StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget, + hltColor); + } + + if (widthInPixels >= 2) { + start.x = (mVertical) ? mRect.width - (2 * pixelWidth) : 0; + start.y = (mVertical) ? 0 : mRect.height - (2 * pixelWidth); + end.x = (mVertical) ? start.x : mRect.width; + end.y = (mVertical) ? mRect.height : start.y; + StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget, + sdwColor); + } + + if (widthInPixels >= 1) { + start.x = (mVertical) ? mRect.width - pixelWidth : 0; + start.y = (mVertical) ? 0 : mRect.height - pixelWidth; + end.x = (mVertical) ? start.x : mRect.width; + end.y = (mVertical) ? mRect.height : start.y; + StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget, + fgColor); + } +} + +nsresult nsHTMLFramesetBorderFrame::HandleEvent(nsPresContext* aPresContext, + WidgetGUIEvent* aEvent, + nsEventStatus* aEventStatus) { + NS_ENSURE_ARG_POINTER(aEventStatus); + *aEventStatus = nsEventStatus_eIgnore; + + // XXX Mouse setting logic removed. The remaining logic should also move. + if (!mCanResize) { + return NS_OK; + } + + if (aEvent->mMessage == eMouseDown && + aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) { + nsHTMLFramesetFrame* parentFrame = do_QueryFrame(GetParent()); + if (parentFrame) { + parentFrame->StartMouseDrag(aPresContext, this, aEvent); + *aEventStatus = nsEventStatus_eConsumeNoDefault; + } + } + return NS_OK; +} + +nsIFrame::Cursor nsHTMLFramesetBorderFrame::GetCursor(const nsPoint&) { + auto kind = StyleCursorKind::Default; + if (mCanResize) { + kind = mVertical ? StyleCursorKind::EwResize : StyleCursorKind::NsResize; + } + return Cursor{kind, AllowCustomCursorImage::No}; +} + +#ifdef DEBUG_FRAME_DUMP +nsresult nsHTMLFramesetBorderFrame::GetFrameName(nsAString& aResult) const { + return MakeFrameName(u"FramesetBorder"_ns, aResult); +} +#endif + +/******************************************************************************* + * nsHTMLFramesetBlankFrame + ******************************************************************************/ + +NS_QUERYFRAME_HEAD(nsHTMLFramesetBlankFrame) + NS_QUERYFRAME_ENTRY(nsHTMLFramesetBlankFrame) +NS_QUERYFRAME_TAIL_INHERITING(nsLeafFrame) + +NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetBlankFrame) + +nsHTMLFramesetBlankFrame::~nsHTMLFramesetBlankFrame() { + // printf("nsHTMLFramesetBlankFrame destructor %p \n", this); +} + +nscoord nsHTMLFramesetBlankFrame::GetIntrinsicISize() { + // No intrinsic width + return 0; +} + +nscoord nsHTMLFramesetBlankFrame::GetIntrinsicBSize() { + // No intrinsic height + return 0; +} + +void nsHTMLFramesetBlankFrame::Reflow(nsPresContext* aPresContext, + ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) { + DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetBlankFrame"); + MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!"); + + // Override Reflow(), since we don't want to deal with what our + // computed values are. + SizeToAvailSize(aReflowInput, aDesiredSize); + + aDesiredSize.SetOverflowAreasToDesiredBounds(); +} + +class nsDisplayFramesetBlank : public nsPaintedDisplayItem { + public: + nsDisplayFramesetBlank(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame) + : nsPaintedDisplayItem(aBuilder, aFrame) { + MOZ_COUNT_CTOR(nsDisplayFramesetBlank); + } + MOZ_COUNTED_DTOR_OVERRIDE(nsDisplayFramesetBlank) + + virtual void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override; + NS_DISPLAY_DECL_NAME("FramesetBlank", TYPE_FRAMESET_BLANK) +}; + +void nsDisplayFramesetBlank::Paint(nsDisplayListBuilder* aBuilder, + gfxContext* aCtx) { + DrawTarget* drawTarget = aCtx->GetDrawTarget(); + int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel(); + Rect rect = NSRectToSnappedRect(GetPaintRect(aBuilder, aCtx), + appUnitsPerDevPixel, *drawTarget); + ColorPattern white(ToDeviceColor(sRGBColor::OpaqueWhite())); + drawTarget->FillRect(rect, white); +} + +void nsHTMLFramesetBlankFrame::BuildDisplayList( + nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) { + aLists.Content()->AppendNewToTop<nsDisplayFramesetBlank>(aBuilder, this); +} |