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ee23efc9b5
In bug 1773342 I made OS text scale factor behave like a full zoom factor which applies to all pages (including the browser chrome). That's generally straight forward but it makes some callsites that use unzoomed CSS coordinates misbehave (or behave correctly accidentally actually in some other cases). The main fix here is making nsIBaseWindow::UnscaledDevicePixelsPerCSSPixel() and nsIScreen::GetDefaultCSSScaleFactor() account for OS zoom as necessary. However, I also went through the relevant code and cleaned it up to use typed units and operations when possible. The setup means: * nsIWidget::GetDefaultScale() doesn't account for OS full zoom. * nsIBaseWindow and nsIScreen does. These are the places where this should matter and stuff can get confused, but this works surprisingly well for all callers (except one nsDeviceContext one which we use only for PuppetWidget and we can remove by falling back to 1.0 like all other widgets until the update comes). Differential Revision: https://phabricator.services.mozilla.com/D149033
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_widget_Screen_h
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#define mozilla_widget_Screen_h
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#include "nsIScreen.h"
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#include "Units.h"
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#include "mozilla/HalScreenConfiguration.h" // For hal::ScreenOrientation
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namespace mozilla {
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namespace dom {
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class ScreenDetails;
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} // namespace dom
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namespace widget {
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class Screen final : public nsIScreen {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSISCREEN
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using OrientationAngle = uint16_t;
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enum class IsPseudoDisplay : bool { No, Yes };
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Screen(LayoutDeviceIntRect aRect, LayoutDeviceIntRect aAvailRect,
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uint32_t aPixelDepth, uint32_t aColorDepth, uint32_t aRefreshRate,
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DesktopToLayoutDeviceScale aContentsScale,
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CSSToLayoutDeviceScale aDefaultCssScale, float aDpi, IsPseudoDisplay,
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hal::ScreenOrientation = hal::ScreenOrientation::None,
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OrientationAngle = 0);
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explicit Screen(const dom::ScreenDetails& aScreenDetails);
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Screen(const Screen& aOther);
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dom::ScreenDetails ToScreenDetails() const;
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OrientationAngle GetOrientationAngle() const { return mOrientationAngle; }
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hal::ScreenOrientation GetOrientationType() const {
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return mScreenOrientation;
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}
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float GetDPI() const { return mDPI; }
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const LayoutDeviceIntRect& GetRect() const { return mRect; }
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const LayoutDeviceIntRect& GetAvailRect() const { return mAvailRect; }
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const DesktopToLayoutDeviceScale& GetContentsScaleFactor() const {
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return mContentsScale;
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}
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private:
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virtual ~Screen() = default;
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const LayoutDeviceIntRect mRect;
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const LayoutDeviceIntRect mAvailRect;
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const DesktopIntRect mRectDisplayPix;
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const DesktopIntRect mAvailRectDisplayPix;
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const uint32_t mPixelDepth;
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const uint32_t mColorDepth;
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const uint32_t mRefreshRate;
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const DesktopToLayoutDeviceScale mContentsScale;
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const CSSToLayoutDeviceScale mDefaultCssScale;
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const float mDPI;
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const hal::ScreenOrientation mScreenOrientation;
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const OrientationAngle mOrientationAngle;
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const bool mIsPseudoDisplay;
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};
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} // namespace widget
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} // namespace mozilla
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#endif
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