summaryrefslogtreecommitdiffstats
path: root/layout/svg/nsSVGContainerFrame.h
diff options
context:
space:
mode:
authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/svg/nsSVGContainerFrame.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
downloadUXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip
Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/svg/nsSVGContainerFrame.h')
-rw-r--r--layout/svg/nsSVGContainerFrame.h155
1 files changed, 155 insertions, 0 deletions
diff --git a/layout/svg/nsSVGContainerFrame.h b/layout/svg/nsSVGContainerFrame.h
new file mode 100644
index 000000000..f4a01e155
--- /dev/null
+++ b/layout/svg/nsSVGContainerFrame.h
@@ -0,0 +1,155 @@
+/* -*- 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/. */
+
+#ifndef NS_SVGCONTAINERFRAME_H
+#define NS_SVGCONTAINERFRAME_H
+
+#include "mozilla/Attributes.h"
+#include "nsContainerFrame.h"
+#include "nsFrame.h"
+#include "nsIFrame.h"
+#include "nsISVGChildFrame.h"
+#include "nsQueryFrame.h"
+#include "nsRect.h"
+#include "nsSVGUtils.h"
+
+class gfxContext;
+class nsFrameList;
+class nsIContent;
+class nsIPresShell;
+class nsStyleContext;
+
+struct nsRect;
+
+/**
+ * Base class for SVG container frames. Frame sub-classes that do not
+ * display their contents directly (such as the frames for <marker> or
+ * <pattern>) just inherit this class. Frame sub-classes that do or can
+ * display their contents directly (such as the frames for inner-<svg> or
+ * <g>) inherit our nsDisplayContainerFrame sub-class.
+ *
+ * *** WARNING ***
+ *
+ * Do *not* blindly cast to SVG element types in this class's methods (see the
+ * warning comment for nsSVGDisplayContainerFrame below).
+ */
+class nsSVGContainerFrame : public nsContainerFrame
+{
+ friend nsIFrame* NS_NewSVGContainerFrame(nsIPresShell* aPresShell,
+ nsStyleContext* aContext);
+protected:
+ explicit nsSVGContainerFrame(nsStyleContext* aContext)
+ : nsContainerFrame(aContext)
+ {
+ AddStateBits(NS_FRAME_SVG_LAYOUT);
+ }
+
+public:
+ NS_DECL_QUERYFRAME_TARGET(nsSVGContainerFrame)
+ NS_DECL_QUERYFRAME
+ NS_DECL_FRAMEARENA_HELPERS
+
+ // Returns the transform to our gfxContext (to device pixels, not CSS px)
+ virtual gfxMatrix GetCanvasTM() {
+ return gfxMatrix();
+ }
+
+ /**
+ * Returns true if the frame's content has a transform that applies only to
+ * its children, and not to the frame itself. For example, an implicit
+ * transform introduced by a 'viewBox' attribute, or an explicit transform
+ * due to a root-<svg> having its currentScale/currentTransform properties
+ * set. If aTransform is non-null, then it will be set to the transform.
+ */
+ virtual bool HasChildrenOnlyTransform(Matrix *aTransform) const {
+ return false;
+ }
+
+ // nsIFrame:
+ virtual void AppendFrames(ChildListID aListID,
+ nsFrameList& aFrameList) override;
+ virtual void InsertFrames(ChildListID aListID,
+ nsIFrame* aPrevFrame,
+ nsFrameList& aFrameList) override;
+ virtual void RemoveFrame(ChildListID aListID,
+ nsIFrame* aOldFrame) override;
+
+ virtual bool IsFrameOfType(uint32_t aFlags) const override
+ {
+ return nsContainerFrame::IsFrameOfType(
+ aFlags & ~(nsIFrame::eSVG | nsIFrame::eSVGContainer));
+ }
+
+ virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists) override {}
+
+ virtual bool ComputeCustomOverflow(nsOverflowAreas& aOverflowAreas) override;
+
+protected:
+ /**
+ * Traverses a frame tree, marking any SVGTextFrame frames as dirty
+ * and calling InvalidateRenderingObservers() on it.
+ */
+ static void ReflowSVGNonDisplayText(nsIFrame* aContainer);
+};
+
+/**
+ * Frame class or base-class for SVG containers that can or do display their
+ * contents directly.
+ *
+ * *** WARNING ***
+ *
+ * This class's methods can *not* assume that mContent points to an instance of
+ * an SVG element class since this class is inherited by
+ * nsSVGGenericContainerFrame which is used for unrecognized elements in the
+ * SVG namespace. Do *not* blindly cast to SVG element types.
+ */
+class nsSVGDisplayContainerFrame : public nsSVGContainerFrame,
+ public nsISVGChildFrame
+{
+protected:
+ explicit nsSVGDisplayContainerFrame(nsStyleContext* aContext)
+ : nsSVGContainerFrame(aContext)
+ {
+ AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED);
+ }
+
+public:
+ NS_DECL_QUERYFRAME_TARGET(nsSVGDisplayContainerFrame)
+ NS_DECL_QUERYFRAME
+ NS_DECL_FRAMEARENA_HELPERS
+
+ // nsIFrame:
+ virtual void InsertFrames(ChildListID aListID,
+ nsIFrame* aPrevFrame,
+ nsFrameList& aFrameList) override;
+ virtual void RemoveFrame(ChildListID aListID,
+ nsIFrame* aOldFrame) override;
+ virtual void Init(nsIContent* aContent,
+ nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) override;
+
+ virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists) override;
+
+ virtual bool IsSVGTransformed(Matrix *aOwnTransform = nullptr,
+ Matrix *aFromParentTransform = nullptr) const override;
+
+ // nsISVGChildFrame interface:
+ virtual DrawResult PaintSVG(gfxContext& aContext,
+ const gfxMatrix& aTransform,
+ const nsIntRect *aDirtyRect = nullptr) override;
+ virtual nsIFrame* GetFrameForPoint(const gfxPoint& aPoint) override;
+ virtual nsRect GetCoveredRegion() override;
+ virtual void ReflowSVG() override;
+ virtual void NotifySVGChanged(uint32_t aFlags) override;
+ virtual SVGBBox GetBBoxContribution(const Matrix &aToBBoxUserspace,
+ uint32_t aFlags) override;
+ virtual bool IsDisplayContainer() override { return true; }
+};
+
+#endif