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-rw-r--r--layout/svg/SVGPaintServerFrame.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/layout/svg/SVGPaintServerFrame.h b/layout/svg/SVGPaintServerFrame.h
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+++ b/layout/svg/SVGPaintServerFrame.h
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+/* -*- 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/. */
+
+#ifndef LAYOUT_SVG_SVGPAINTSERVERFRAME_H_
+#define LAYOUT_SVG_SVGPAINTSERVERFRAME_H_
+
+#include "gfxRect.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/SVGContainerFrame.h"
+#include "nsCOMPtr.h"
+#include "nsIFrame.h"
+#include "nsIFrame.h"
+#include "nsQueryFrame.h"
+
+class gfxContext;
+class gfxPattern;
+
+namespace mozilla {
+namespace gfx {
+class DrawTarget;
+} // namespace gfx
+
+/**
+ * RAII class used to temporarily set and remove the
+ * NS_FRAME_DRAWING_AS_PAINTSERVER frame state bit while a frame is being
+ * drawn as a paint server.
+ */
+class MOZ_RAII AutoSetRestorePaintServerState {
+ public:
+ explicit AutoSetRestorePaintServerState(nsIFrame* aFrame) : mFrame(aFrame) {
+ mFrame->AddStateBits(NS_FRAME_DRAWING_AS_PAINTSERVER);
+ }
+ ~AutoSetRestorePaintServerState() {
+ mFrame->RemoveStateBits(NS_FRAME_DRAWING_AS_PAINTSERVER);
+ }
+
+ private:
+ nsIFrame* mFrame;
+};
+
+class SVGPaintServerFrame : public SVGContainerFrame {
+ protected:
+ using DrawTarget = gfx::DrawTarget;
+
+ SVGPaintServerFrame(ComputedStyle* aStyle, nsPresContext* aPresContext,
+ ClassID aID)
+ : SVGContainerFrame(aStyle, aPresContext, aID) {
+ AddStateBits(NS_FRAME_IS_NONDISPLAY |
+ NS_STATE_SVG_RENDERING_OBSERVER_CONTAINER);
+ }
+
+ public:
+ using imgDrawingParams = image::imgDrawingParams;
+
+ NS_DECL_ABSTRACT_FRAME(SVGPaintServerFrame)
+ NS_DECL_QUERYFRAME
+ NS_DECL_QUERYFRAME_TARGET(SVGPaintServerFrame)
+
+ /**
+ * Constructs a gfxPattern of the paint server rendering.
+ *
+ * @param aContextMatrix The transform matrix that is currently applied to
+ * the gfxContext that is being drawn to. This is needed by SVG patterns so
+ * that surfaces of the correct size can be created. (SVG gradients are
+ * vector based, so it's not used there.)
+ */
+ virtual already_AddRefed<gfxPattern> GetPaintServerPattern(
+ nsIFrame* aSource, const DrawTarget* aDrawTarget,
+ const gfxMatrix& aContextMatrix, StyleSVGPaint nsStyleSVG::*aFillOrStroke,
+ float aOpacity, imgDrawingParams& aImgParams,
+ const gfxRect* aOverrideBounds = nullptr) = 0;
+
+ // nsIFrame methods:
+ void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsDisplayListSet& aLists) override {}
+};
+
+} // namespace mozilla
+
+#endif // LAYOUT_SVG_SVGPAINTSERVERFRAME_H_