From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/layers/apz/src/ExpectedGeckoMetrics.h | 44 +++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 gfx/layers/apz/src/ExpectedGeckoMetrics.h (limited to 'gfx/layers/apz/src/ExpectedGeckoMetrics.h') 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 -- cgit v1.2.3