зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
4.0 KiB
C++
130 строки
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set sw=2 ts=4 expandtab:
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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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#include "ScreenHelperAndroid.h"
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#include "AndroidRect.h"
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#include "GeneratedJNINatives.h"
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#include "nsThreadUtils.h"
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#include <mozilla/jni/Refs.h>
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#include "mozilla/Atomics.h"
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#include "mozilla/widget/ScreenManager.h"
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using namespace mozilla;
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using namespace mozilla::java;
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using namespace mozilla::widget;
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static ScreenHelperAndroid* gHelper = nullptr;
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class ScreenHelperAndroid::ScreenHelperSupport final
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: public ScreenManagerHelper::Natives<ScreenHelperSupport> {
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public:
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typedef ScreenManagerHelper::Natives<ScreenHelperSupport> Base;
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static void RefreshScreenInfo() { gHelper->Refresh(); }
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static int32_t AddDisplay(int32_t aDisplayType, int32_t aWidth,
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int32_t aHeight, float aDensity) {
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static Atomic<uint32_t> nextId;
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uint32_t screenId = ++nextId;
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NS_DispatchToMainThread(
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NS_NewRunnableFunction(
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"ScreenHelperAndroid::ScreenHelperSupport::AddDisplay",
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[aDisplayType, aWidth, aHeight, aDensity, screenId] {
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MOZ_ASSERT(NS_IsMainThread());
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gHelper->AddScreen(
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screenId, static_cast<DisplayType>(aDisplayType),
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LayoutDeviceIntRect(0, 0, aWidth, aHeight), aDensity);
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})
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.take());
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return screenId;
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}
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static void RemoveDisplay(int32_t aScreenId) {
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NS_DispatchToMainThread(
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NS_NewRunnableFunction(
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"ScreenHelperAndroid::ScreenHelperSupport::RemoveDisplay",
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[aScreenId] {
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MOZ_ASSERT(NS_IsMainThread());
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gHelper->RemoveScreen(aScreenId);
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})
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.take());
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}
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};
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static already_AddRefed<Screen> MakePrimaryScreen() {
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MOZ_ASSERT(XRE_IsParentProcess());
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java::sdk::Rect::LocalRef rect = GeckoAppShell::GetScreenSize();
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LayoutDeviceIntRect bounds = LayoutDeviceIntRect(
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rect->Left(), rect->Top(), rect->Width(), rect->Height());
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uint32_t depth = GeckoAppShell::GetScreenDepth();
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float density = GeckoAppShell::GetDensity();
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float dpi = GeckoAppShell::GetDpi();
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RefPtr<Screen> screen = new Screen(bounds, bounds, depth, depth,
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DesktopToLayoutDeviceScale(density),
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CSSToLayoutDeviceScale(1.0f), dpi);
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return screen.forget();
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}
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ScreenHelperAndroid::ScreenHelperAndroid() {
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MOZ_ASSERT(!gHelper);
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gHelper = this;
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ScreenHelperSupport::Base::Init();
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Refresh();
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}
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ScreenHelperAndroid::~ScreenHelperAndroid() { gHelper = nullptr; }
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/* static */
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ScreenHelperAndroid* ScreenHelperAndroid::GetSingleton() { return gHelper; }
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void ScreenHelperAndroid::Refresh() {
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mScreens.Remove(0);
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AutoTArray<RefPtr<Screen>, 1> screenList;
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RefPtr<Screen> screen = MakePrimaryScreen();
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if (screen) {
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mScreens.Put(0, screen);
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}
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for (auto iter = mScreens.ConstIter(); !iter.Done(); iter.Next()) {
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screenList.AppendElement(iter.Data());
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}
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ScreenManager& manager = ScreenManager::GetSingleton();
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manager.Refresh(std::move(screenList));
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}
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void ScreenHelperAndroid::AddScreen(uint32_t aScreenId,
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DisplayType aDisplayType,
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LayoutDeviceIntRect aRect, float aDensity) {
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MOZ_ASSERT(aScreenId > 0);
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MOZ_ASSERT(!mScreens.Get(aScreenId, nullptr));
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RefPtr<Screen> screen =
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new Screen(aRect, aRect, 24, 24, DesktopToLayoutDeviceScale(aDensity),
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CSSToLayoutDeviceScale(1.0f), 160.0f);
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mScreens.Put(aScreenId, screen);
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Refresh();
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}
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void ScreenHelperAndroid::RemoveScreen(uint32_t aScreenId) {
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mScreens.Remove(aScreenId);
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Refresh();
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}
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already_AddRefed<Screen> ScreenHelperAndroid::ScreenForId(uint32_t aScreenId) {
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RefPtr<Screen> screen = mScreens.Get(aScreenId);
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return screen.forget();
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}
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