给公司做网站多少钱,单位如何申请域名,建设信用卡银行积分商城网站,益阳建设厅网站需求:客户因为模具问题,屏幕方向需要动态的变动.(方向: 0 , 90 , 180 ,270)
拆分:设备开机过程中图像显示可分为三个阶段,boot logo(1)-kernel logo(2),这一段的处理需要驱动层,所以暂时忽略.
开机动画 Bootanimation(3)阶段 和 Home Launcher应用显示(4)阶段是需要修改的…需求:客户因为模具问题,屏幕方向需要动态的变动.(方向: 0 , 90 , 180 ,270)
拆分:设备开机过程中图像显示可分为三个阶段,boot logo(1)-kernel logo(2),这一段的处理需要驱动层,所以暂时忽略.
开机动画 Bootanimation(3)阶段 和 Home Launcher应用显示(4)阶段是需要修改的.
因为是动态的,有涉及到cpp部分,一般用系统属性保存:persist.customer.set.orientation0
Bootanimation
./frameworks/base/cmds/bootanimation/BootAnimation.cpp/**
* readyToRun()负责构建开机动画,进入readyToRun()中 就来加载显示每一帧动画
*
* createSurface()负责绘制开机动画页面
*/status_t BootAnimation::readyToRun() {mAssets.addDefaultAssets();mDisplayToken SurfaceComposerClient::getInternalDisplayToken();if (mDisplayToken nullptr)return NAME_NOT_FOUND;DisplayMode displayMode;const status_t error SurfaceComposerClient::getActiveDisplayMode(mDisplayToken, displayMode);if (error ! NO_ERROR)return error;mMaxWidth android::base::GetIntProperty(ro.surface_flinger.max_graphics_width, 0);mMaxHeight android::base::GetIntProperty(ro.surface_flinger.max_graphics_height, 0);ui::Size resolution displayMode.resolution;resolution limitSurfaceSize(resolution.width, resolution.height); //add textchar cOrientation [PROPERTY_VALUE_MAX];property_get(persist.customer.set.orientation,cOrientation,0);int temp_orientation atoi(cOrientation);SurfaceComposerClient::Transaction t;int temp_width 0;int temp_height 0;if(temp_orientation 90){temp_width resolution.getHeight();temp_height resolution.getWidth();Rect destRect(temp_width, temp_height);t.setDisplayProjection(mDisplayToken, ui::ROTATION_90, destRect, destRect);ALOGD(BootAnimation rotation is 90);}else if(temp_orientation 180){Rect destRect(temp_width, temp_height);t.setDisplayProjection(mDisplayToken, ui::ROTATION_180, destRect, destRect);ALOGD(BootAnimation rotation is 180);}else if(temp_orientation 270){temp_width resolution.getHeight();temp_height resolution.getWidth();Rect destRect(temp_width, temp_height);t.setDisplayProjection(mDisplayToken, ui::ROTATION_270, destRect, destRect);ALOGD(BootAnimation rotation is 270);}// create the native surfacespSurfaceControl control session()-createSurface(String8(BootAnimation),resolution.getWidth(), resolution.getHeight(), PIXEL_FORMAT_RGB_565);
-
- SurfaceComposerClient::Transaction t;//add text// this guest property specifies multi-display IDs to show the boot animation// multiple ids can be set with comma (,) as separator, for example:...
}//系统自带根据ro.bootanim.set_orientation_display_id 旋转屏幕动画方向
// Rotate the boot animation according to the value specified in the sysprop ro.bootanim.set_orientation_display_id.
// Four values are supported: ORIENTATION_0,ORIENTATION_90, ORIENTATION_180 and ORIENTATION_270.
// If the value isnt specified or is ORIENTATION_0, nothing will be changed.// This is needed to support having boot animation in orientations different from the natural
// device orientation. For example, on tablets that may want to keep natural orientation
// portrait for applications compatibility and to have the boot animation in landscape.
void BootAnimation::rotateAwayFromNaturalOrientationIfNeeded() {const auto orientation parseOrientationProperty();if (orientation ui::ROTATION_0) {// Do nothing if the sysprop isnt set or is set to ROTATION_0.return;}if (orientation ui::ROTATION_90 || orientation ui::ROTATION_270) {std::swap(mWidth, mHeight);std::swap(mInitWidth, mInitHeight);mFlingerSurfaceControl-updateDefaultBufferSize(mWidth, mHeight);}Rect displayRect(0, 0, mWidth, mHeight);Rect layerStackRect(0, 0, mWidth, mHeight);SurfaceComposerClient::Transaction t;t.setDisplayProjection(mDisplayToken, orientation, layerStackRect, displayRect);t.apply();
}ui::Rotation BootAnimation::parseOrientationProperty() {const auto displayIds SurfaceComposerClient::getPhysicalDisplayIds();if (displayIds.size() 0) {return ui::ROTATION_0;}const auto displayId displayIds[0];const auto syspropName [displayId] {std::stringstream ss;ss ro.bootanim.set_orientation_ displayId.value;return ss.str();}();const auto syspropValue android::base::GetProperty(syspropName, ORIENTATION_0);if (syspropValue ORIENTATION_90) {return ui::ROTATION_90;} else if (syspropValue ORIENTATION_180) {return ui::ROTATION_180;} else if (syspropValue ORIENTATION_270) {return ui::ROTATION_270;}return ui::ROTATION_0;
}applications
动画的屏幕方向,一阶段是由上面的代码决定,二阶段由Framework display决定
frameworks/base/services/core/java/com/android/server/wm/DisplayRotation.java private int mCustomerRotation Surface.ROTATION_0;//add textVisibleForTestingDisplayRotation(WindowManagerService service, DisplayContent displayContent,DisplayAddress displayAddress, DisplayPolicy displayPolicy,DisplayWindowSettings displayWindowSettings, Context context, Object lock,NonNull DeviceStateController deviceStateController) {mService service;mDisplayContent displayContent;...//add textint temp_orientation SystemProperties.getInt(persist.customer.set.orientation, 0);if (temp_orientation 0) {mCustomerRotation Surface.ROTATION_0;} else if (temp_orientation 90) {mCustomerRotation Surface.ROTATION_90;} else if (temp_orientation 180) {mCustomerRotation Surface.ROTATION_180;} else if (temp_orientation 270) {mCustomerRotation Surface.ROTATION_270;}mRotation mCustomerRotation;//end replace//add text//观察 user_rotationif (isDefaultDisplay) {final Handler uiHandler UiThread.getHandler();mOrientationListener new OrientationListener(mContext, uiHandler, defaultRotation);mOrientationListener.setCurrentRotation(mRotation);mSettingsObserver new SettingsObserver(uiHandler);mSettingsObserver.observe();if (mSupportAutoRotation mContext.getResources().getBoolean(R.bool.config_windowManagerHalfFoldAutoRotateOverride)) {mFoldController new FoldController();} else {mFoldController null;}} else {mFoldController null;}}boolean updateRotationUnchecked(boolean forceUpdate) {final int displayId mDisplayContent.getDisplayId();...final int oldRotation mRotation;final int lastOrientation mLastOrientation;
- int rotation rotationForOrientation(lastOrientation, oldRotation);int rotation mCustomerRotation;//rotationForOrientation(lastOrientation, oldRotation);//add text// Use the saved rotation for tabletop mode, if set.if (mFoldController ! null mFoldController.shouldRevertOverriddenRotation()) {int prevRotation rotation;...}Surface.Rotationint rotationForOrientation(ScreenOrientation int orientation,Surface.Rotation int lastRotation) {...//关于这里的判断,自己可以根据需求旋转条件 //add textif(true){return mCustomerRotation;}//add text
if (isFixedToUserRotation()) {return mUserRotation;}}/frameworks/base/services/core/java/com/android/server/wm/DisplayContent.java ScreenOrientationOverrideint getOrientation() {//add textint mCustomerRotation 0;int temp_orientation SystemProperties.getInt(persist.customer.set.orientation, 0);if (temp_orientation 0) {mCustomerRotation Surface.ROTATION_0;return mCustomerRotation;} else if (temp_orientation 90) {mCustomerRotation Surface.ROTATION_90;return mCustomerRotation;} else if (temp_orientation 190) {mCustomerRotation Surface.ROTATION_180;return mCustomerRotation;} else if (temp_orientation 270) {mCustomerRotation Surface.ROTATION_270;return mCustomerRotation;}//add textif (mWmService.mDisplayFrozen) {if (mWmService.mPolicy.isKeyguardLocked()) {//是否允许设备通过加速器(G-sensor)在所有四个方向自动旋转屏幕
/frameworks/base/core/res/res/values/config.xml!-- If true, the screen can be rotated via the accelerometer in all 4rotations as the default behavior. --
- bool nameconfig_allowAllRotationsfalse/boolbool nameconfig_allowAllRotationstrue/bool!-- If true, the direction rotation is applied to get to an applications requestedorientation is reversed. Normally, the model is that landscape is
about SurfaceFlinger
SurfaceFlinger是Android系统中负责屏幕显示内容合成的服务它接收来自多个应用程序和系统服务的图像缓冲区 根据它们的位置、大小、透明度、Z轴顺序等属性将它们合成到一个最终的缓冲区中然后发送到显示设备上
修改getPhysicalDisplayOrientation 显示方向,也可以实现上面的效果. 如果要动态的,就要用到系统属性,但是可能会遇到针对数据分区加密导致的开机时无法读取系统属性问题. 如何解决,(修改init.mount_all_early.rc和fstab.in)参考:RK平台android12 动态调整屏幕方向
/frameworks/native/services/surfaceflinger/SurfaceFlinger.cppui::Rotation SurfaceFlinger::getPhysicalDisplayOrientation(DisplayId displayId,bool isPrimary) const {/*const auto id PhysicalDisplayId::tryCast(displayId);if (!id) {return ui::ROTATION_0;}if (getHwComposer().getComposer()-isSupported(Hwc2::Composer::OptionalFeature::PhysicalDisplayOrientation)) {switch (getHwComposer().getPhysicalDisplayOrientation(*id)) {case Hwc2::AidlTransform::ROT_90:return ui::ROTATION_90;case Hwc2::AidlTransform::ROT_180:return ui::ROTATION_180;case Hwc2::AidlTransform::ROT_270:return ui::ROTATION_270;default:return ui::ROTATION_0;}}if (isPrimary) {using Values SurfaceFlingerProperties::primary_display_orientation_values;switch (primary_display_orientation(Values::ORIENTATION_0)) {case Values::ORIENTATION_90:return ui::ROTATION_90;case Values::ORIENTATION_180:return ui::ROTATION_180;case Values::ORIENTATION_270:return ui::ROTATION_270;default:break;}}*/return ui::ROTATION_270;
}void SurfaceFlinger::startBootAnim() {// Start boot animation service by setting a property mailbox// if property setting thread is already running, Start() will be just a NOPmStartPropertySetThread-Start();// Wait until property was setif (mStartPropertySetThread-join() ! NO_ERROR) {ALOGE(Join StartPropertySetThread failed!);}
}SurfaceFlinger的原理 Android显示系统SurfaceFlinger详解 超级干货 正点原子RK3588开发板Android系统屏幕显示方向配置
