summaryrefslogtreecommitdiffstats
path: root/layout/svg/SVGFELeafFrame.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'layout/svg/SVGFELeafFrame.cpp')
-rw-r--r--layout/svg/SVGFELeafFrame.cpp105
1 files changed, 105 insertions, 0 deletions
diff --git a/layout/svg/SVGFELeafFrame.cpp b/layout/svg/SVGFELeafFrame.cpp
new file mode 100644
index 0000000000..c49ae429b4
--- /dev/null
+++ b/layout/svg/SVGFELeafFrame.cpp
@@ -0,0 +1,105 @@
+/* -*- 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/. */
+
+// Keep in (case-insensitive) order:
+#include "mozilla/PresShell.h"
+#include "mozilla/SVGObserverUtils.h"
+#include "mozilla/dom/SVGFilters.h"
+#include "ComputedStyle.h"
+#include "nsContainerFrame.h"
+#include "nsIFrame.h"
+#include "nsGkAtoms.h"
+
+using namespace mozilla::dom;
+
+nsIFrame* NS_NewSVGFELeafFrame(mozilla::PresShell* aPresShell,
+ mozilla::ComputedStyle* aStyle);
+namespace mozilla {
+
+/*
+ * This frame is used by filter primitive elements that don't
+ * have special child elements that provide parameters.
+ */
+class SVGFELeafFrame final : public nsIFrame {
+ friend nsIFrame* ::NS_NewSVGFELeafFrame(mozilla::PresShell* aPresShell,
+ ComputedStyle* aStyle);
+
+ protected:
+ explicit SVGFELeafFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
+ : nsIFrame(aStyle, aPresContext, kClassID) {
+ AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
+ }
+
+ public:
+ NS_DECL_FRAMEARENA_HELPERS(SVGFELeafFrame)
+
+#ifdef DEBUG
+ virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) override;
+#endif
+
+ bool IsFrameOfType(uint32_t aFlags) const override {
+ if (aFlags & eSupportsContainLayoutAndPaint) {
+ return false;
+ }
+
+ return nsIFrame::IsFrameOfType(aFlags & ~(nsIFrame::eSVG));
+ }
+
+#ifdef DEBUG_FRAME_DUMP
+ nsresult GetFrameName(nsAString& aResult) const override {
+ return MakeFrameName(u"SVGFELeaf"_ns, aResult);
+ }
+#endif
+
+ virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+ int32_t aModType) override;
+
+ bool ComputeCustomOverflow(OverflowAreas& aOverflowAreas) override {
+ // We don't maintain a ink overflow rect
+ return false;
+ }
+};
+
+} // namespace mozilla
+
+nsIFrame* NS_NewSVGFELeafFrame(mozilla::PresShell* aPresShell,
+ mozilla::ComputedStyle* aStyle) {
+ return new (aPresShell)
+ mozilla::SVGFELeafFrame(aStyle, aPresShell->GetPresContext());
+}
+
+namespace mozilla {
+
+NS_IMPL_FRAMEARENA_HELPERS(SVGFELeafFrame)
+
+#ifdef DEBUG
+void SVGFELeafFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) {
+ nsCOMPtr<SVGFE> filterPrimitive = do_QueryInterface(aContent);
+ NS_ASSERTION(filterPrimitive,
+ "Trying to construct an SVGFELeafFrame for a "
+ "content element that doesn't support the right interfaces");
+
+ nsIFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif /* DEBUG */
+
+nsresult SVGFELeafFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsAtom* aAttribute,
+ int32_t aModType) {
+ auto* element = static_cast<mozilla::dom::SVGFE*>(GetContent());
+ if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
+ MOZ_ASSERT(
+ GetParent()->IsSVGFilterFrame(),
+ "Observers observe the filter, so that's what we must invalidate");
+ SVGObserverUtils::InvalidateDirectRenderingObservers(GetParent());
+ }
+
+ return nsIFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
+}
+
+} // namespace mozilla