summaryrefslogtreecommitdiffstats
path: root/gfx/layers/apz/src/ExpectedGeckoMetrics.h
diff options
context:
space:
mode:
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/apz/src/ExpectedGeckoMetrics.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/apz/src/ExpectedGeckoMetrics.h')
-rw-r--r--gfx/layers/apz/src/ExpectedGeckoMetrics.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/gfx/layers/apz/src/ExpectedGeckoMetrics.h b/gfx/layers/apz/src/ExpectedGeckoMetrics.h
new file mode 100644
index 0000000000..ca5aa76eba
--- /dev/null
+++ b/gfx/layers/apz/src/ExpectedGeckoMetrics.h
@@ -0,0 +1,44 @@
+/* -*- 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 mozilla_layers_ExpectedGeckoMetrics_h
+#define mozilla_layers_ExpectedGeckoMetrics_h
+
+#include "Units.h"
+
+namespace mozilla {
+namespace layers {
+
+struct FrameMetrics;
+
+// A class that stores a subset of the FrameMetrics information
+// than an APZC instance expects Gecko to have (either the
+// metrics that were most recently sent to Gecko, or the ones
+// most recently received from Gecko).
+class ExpectedGeckoMetrics {
+ public:
+ ExpectedGeckoMetrics() = default;
+ void UpdateFrom(const FrameMetrics& aMetrics);
+ void UpdateZoomFrom(const FrameMetrics& aMetrics);
+
+ const CSSPoint& GetVisualScrollOffset() const { return mVisualScrollOffset; }
+ const CSSPoint& GetLayoutScrollOffset() const { return mLayoutScrollOffset; }
+ const CSSToParentLayerScale& GetZoom() const { return mZoom; }
+ const CSSToLayoutDeviceScale& GetDevPixelsPerCSSPixel() const {
+ return mDevPixelsPerCSSPixel;
+ }
+
+ private:
+ CSSPoint mVisualScrollOffset;
+ CSSPoint mLayoutScrollOffset;
+ CSSToParentLayerScale mZoom;
+ CSSToLayoutDeviceScale mDevPixelsPerCSSPixel;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif