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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/layers/wr/HitTestInfoManager.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/layers/wr/HitTestInfoManager.h')
-rw-r--r--gfx/layers/wr/HitTestInfoManager.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/gfx/layers/wr/HitTestInfoManager.h b/gfx/layers/wr/HitTestInfoManager.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 GFX_HITTESTINFOMANAGER_H
+#define GFX_HITTESTINFOMANAGER_H
+
+#include "mozilla/gfx/CompositorHitTestInfo.h"
+#include "mozilla/layers/ScrollableLayerGuid.h"
+#include "mozilla/webrender/WebRenderAPI.h"
+#include "nsRect.h"
+
+namespace mozilla {
+
+class nsDisplayItem;
+class nsDisplayListBuilder;
+
+namespace wr {
+class DisplayListBuilder;
+}
+
+namespace layers {
+
+/**
+ * This class extracts the hit testing information (area, flags, ViewId) from
+ * Gecko display items and pushes them into WebRender display list.
+ *
+ * The hit testing information is deduplicated: a new hit test item is only
+ * added if the new area is not contained in the previous area, or if the flags,
+ * ViewId, or current spatial id is different.
+ */
+class HitTestInfoManager {
+ public:
+ HitTestInfoManager();
+
+ /**
+ * Resets the previous hit testing information.
+ */
+ void Reset();
+
+ /**
+ * Extracts the hit testing information from |aItem|, and if necessary, adds
+ * a new WebRender hit test item using |aBuilder|.
+ *
+ * Returns true if a hit test item was pushed.
+ */
+ bool ProcessItem(nsDisplayItem* aItem, wr::DisplayListBuilder& aBuilder,
+ nsDisplayListBuilder* aDisplayListBuilder);
+
+ private:
+ bool Update(const nsRect& aArea, const gfx::CompositorHitTestInfo& aFlags,
+ const ScrollableLayerGuid::ViewID& aViewId,
+ const wr::WrSpaceAndClipChain& aSpaceAndClip);
+
+ nsRect mArea;
+ gfx::CompositorHitTestInfo mFlags;
+ ScrollableLayerGuid::ViewID mViewId;
+ wr::WrSpaceAndClipChain mSpaceAndClipChain;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif