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拆解步骤

1、app 强制横屏显示，无视 android:screenOrientation="portrait" 属性

2、屏幕触摸坐标修改为横屏

3、开机动画横屏

4、开机logo、关机充电动画横屏

5、RecoveryUI 横屏

上代码

##1、app 强制横屏显示

修改 rotationForOrientationLw(), 默认返回 270

frameworks\base\services\core\java\com\android\server\policy\PhoneWindowManager.java

@Override

public int rotationForOrientationLw(int orientation, int lastRotation, boolean defaultDisplay) {

....

synchronized (mLock) {

...

default:

// For USER, UNSPECIFIED, NOSENSOR, SENSOR and FULL_SENSOR,

// just return the preferred orientation we already calculated.

if (preferredRotation >= 0) {

return preferredRotation;

}

// return Surface.ROTATION_0;

return Surface.ROTATION_270;//cczheng add for land scap

}

}

}

activity 默认强制属性为 SCREEN_ORIENTATION_LANDSCAPE

frameworks\base\services\core\java\com\android\server\wm\WindowManagerService.java

boolean updateOrientationFromAppTokensLocked(int displayId, boolean forceUpdate) {

long ident = Binder.clearCallingIdentity();

try {

final DisplayContent dc = mRoot.getDisplayContent(displayId);

// final int req = dc.getOrientation();

int req = android.content.pm.ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;//cczheng add for land scap

if (req != dc.getLastOrientation() || forceUpdate) {

if (DEBUG_ORIENTATION) {

Slog.v(TAG, "updateOrientation: req= " + req + ", mLastOrientation= "

+ dc.getLastOrientation(), new Throwable("updateOrientation"));

}

dc.setLastOrientation(req);

//send a message to Policy indicating orientation change to take

//action like disabling/enabling sensors etc.,

// TODO(multi-display): Implement policy for secondary displays.

if (dc.isDefaultDisplay) {

mPolicy.setCurrentOrientationLw(req);

}

return dc.updateRotationUnchecked(forceUpdate);

}

return false;

} finally {

Binder.restoreCallingIdentity(ident);

}

}

DisPlayContent 显示 mRotation 默认改为 3 (270)

frameworks\base\services\core\java\com\android\server\wm\DisplayContent.java

/**

* Current rotation of the display.

* Constants as per {@link android.view.Surface.Rotation}.

*

* @see #updateRotationUnchecked()

*/

// private int mRotation = 0;

private int mRotation = 3;//cczheng add for land scap

修改默认值 config_reverseDefaultRotation 为 true，翻转显示角度

frameworks\base\core\res\res\values\config.xml

true

270

2、屏幕触摸坐标修改为横屏

对调 frame 的宽和高,设置方向为 270

frameworks\native\services\surfaceflinger\DisplayDevice.cpp

void DisplayDevice::setProjection(int orientation,

const Rect& newViewport, const Rect& newFrame) {

Rect viewport(newViewport);

Rect frame(newFrame);

const int w = mDisplayWidth;

const int h = mDisplayHeight;

Transform R;

DisplayDevice::orientationToTransfrom(orientation, w, h, &R);

if (!frame.isValid()) {

// the destination frame can be invalid if it has never been set,

// in that case we assume the whole display frame.

//cczheng add for land scap

// frame = Rect(w, h);

if (w < h)

frame = Rect(h, w);

else

frame = Rect(w, h);

}

....

}

// clang-format off

DisplayDevice::DisplayDevice(

const sp& flinger,

DisplayType type,

int32_t hwcId,

bool isSecure,

const wp& displayToken,

const sp& nativeWindow,

const sp& displaySurface,

std::unique_ptr<:surface> renderSurface,

int displayWidth,

int displayHeight,

bool hasWideColorGamut,

const HdrCapabilities& hdrCapabilities,

const int32_t supportedPerFrameMetadata,

const std::unordered_map>& hwcColorModes,

int initialPowerMode)

.....

mHdrCapabilities = HdrCapabilities(types, maxLuminance, maxAverageLuminance, minLuminance);

// initialize the display orientation transform.

// setProjection(DisplayState::eOrientationDefault, mViewport, mFrame);

//cczheng add for land scap

setProjection(DisplayState::eOrientation270, mViewport, mFrame);

#ifdef MTK_SF_DEBUG_SUPPORT

mFps = FpsCounterLoader::getInstance().create();

#endif

}

frameworks\native\services\surfaceflinger\SurfaceFlinger.cpp

void SurfaceFlinger::onInitializeDisplays() {

// reset screen orientation and use primary layer stack

Vector state;

Vector displays;

DisplayState d;

d.what = DisplayState::eDisplayProjectionChanged |

DisplayState::eLayerStackChanged;

d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY];

d.layerStack = 0;

//d.orientation = DisplayState::eOrientationDefault;

//cczheng add for land scap

d.orientation = DisplayState::eOrientation270;

d.frame.makeInvalid();

d.viewport.makeInvalid();

d.width = 0;

d.height = 0;

displays.add(d);

....

}

3、开机动画横屏

对调 createSurface() 的 w 和 h

frameworks\base\cmds\bootanimation\BootAnimation.cpp

status_t BootAnimation::readyToRun() {

mAssets.addDefaultAssets();

sp dtoken(SurfaceComposerClient::getBuiltInDisplay(

ISurfaceComposer::eDisplayIdMain));

DisplayInfo dinfo;

status_t status = SurfaceComposerClient::getDisplayInfo(dtoken, &dinfo);

if (status)

return -1;

// create the native surface

/*sp control = session()->createSurface(String8("BootAnimation"),

dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);*/

//cczheng add for land scap [S]

sp control;

if(dinfo.w < dinfo.h)

control = session()->createSurface(String8("BootAnimation"),

dinfo.h, dinfo.w, PIXEL_FORMAT_RGB_565);

else

control = session()->createSurface(String8("BootAnimation"),

dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);

//cczheng add for land scap [E]

SurfaceComposerClient::Transaction t;

t.setLayer(control, 0x40000000)

.apply();

.....

}

开机动画制作替换后面补充。。。

4、开机logo、关机充电动画横屏

开机logo定义屏幕分辨率以对应资源文件夹的位置为

vendor\mediatek\proprietary\bootable\bootloader\lk\project\xxxx.mk 没有则看下面的

device\mediateksample\xxxx\ProjectConfig.mk

mk 中的 BOOT_LOGO = wxga

对应的资源文件位置在 vendor/mediatek/proprietary/bootable/bootloader/lk/dev/logo/wxga

可以看到 wxga 中都是竖屏的图片，而 wxganl 中已经是横屏的图片

则我们将 BOOT_LOGO 修改为 wxganl 即可

接下来还需要继续修改显示的角度，依旧改成 270，不然会出现花屏的现象

开机第一张图片 uboot 对应显示

vendor\mediatek\proprietary\bootable\bootloader\lk\platform\mt6765\mt_logo.c

void init_fb_screen()

{

.....

// in JB2.MP need to allign width and height to 32 ,but jb5.mp needn't

phical_screen.needAllign = 1;

phical_screen.allignWidth = ALIGN_TO(CFG_DISPLAY_WIDTH, MTK_FB_ALIGNMENT);

/* In GB, no need to adjust 180 showing logo ,for fb driver dealing the change */

/* but in JB, need adjust it for screen 180 roration */

phical_screen.need180Adjust = 0; // need sync with chip driver

dprintf(INFO, "[lk logo: %s %d]MTK_LCM_PHYSICAL_ROTATION = %s\n",__FUNCTION__,__LINE__, MTK_LCM_PHYSICAL_ROTATION);

if (0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "270", 3)) {

phical_screen.rotation = 270;

} else if (0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "90", 2)) {

phical_screen.rotation = 90;

} else if (0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "180", 3) && (phical_screen.need180Adjust == 1)) {

phical_screen.rotation = 180;

} else {

phical_screen.rotation = 270;//cczheng add for land scap

}

....

开机第二张图片 kernel 对应显示

vendor\mediatek\proprietary\external\libshowlogo\charging_animation.cpp

int anim_fb_init(void)

{

.....

phical_screen.needAllign = 1;

phical_screen.need180Adjust = 1;

phical_screen.fb_size = fb_size;

if (MTK_LOG_ENABLE == 1) {

SLOGD("[libshowlogo: %s %d]MTK_LCM_PHYSICAL_ROTATION = %s\n",__FUNCTION__,__LINE__, MTK_LCM_PHYSICAL_ROTATION);

}

if(0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "270", 3))

{

phical_screen.rotation = 270;

} else if(0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "90", 2)){

phical_screen.rotation = 90;

} else if(0 == strncmp(MTK_LCM_PHYSICAL_ROTATION, "180", 3) && (phical_screen.need180Adjust == 1)){

phical_screen.rotation = 180;

} else {

phical_screen.rotation = 270;//cczheng add for land scap

}

if (MTK_LOG_ENABLE == 1) {

SLOGD("[libshowlogo]phical_screen: width= %d,height= %d,bits_per_pixel =%d,needAllign = %d,allignWidth=%d rotation =%d ,need180Adjust = %d\n",

phical_screen.width, phical_screen.height,

phical_screen.bits_per_pixel, phical_screen.needAllign,

phical_screen.allignWidth, phical_screen.rotation, phical_screen.need180Adjust);

SLOGD("[libshowlogo: %s %d]show old animtion= 1, running show_animationm_ver %d\n",__FUNCTION__,__LINE__, show_animationm_ver);

SLOGD("[libshowlogo: %s %d]draw_anim_mode = 1, running mode %d\n",__FUNCTION__,__LINE__, draw_anim_mode);

}

return 0;

}

如果出现充电动画图片错位的现象，多数都是因为图形绘制点和屏幕尺寸不匹配导致的。可通过调整 cust_display.h 中位置参数

Android M 后：/vendor/mediatek/proprietary/external/libshowlogo/cust_display.h

Android M 前： /vendor/mediatek/proprietary/bootable/bootloader/lk/target/${PROJECT}/include/target/cust_display.h

(1 ，使用old version动画方案的调整如下设置，

#define BAR_LEFT (215) #define BAR_TOP (156) #define BAR_RIGHT (265) #define BAR_BOTTOM (278) 可以用windows的画图软件打开第1点里提到的图片，根据电池边框的像素来调整。

这里坐标的参考原点是左上角，背景图片的左上角是(0,0)，这四个值都是相对于左上角的坐标来确定的，因此RIGHT > LEFT，BOTTOM > TOP 小技巧：1)打开画图软件，选择 查看->缩放->自定义，将图片放到到800% 2)选择 查看->缩放->显示网格 这样就可以看到一个一个的像素 (2，使用new version动画方案调整如下设置：

#define CAPACITY_LEFT (278)

#define CAPACITY_TOP (556)

#define CAPACITY_RIGHT (441)

#define CAPACITY_BOTTOM (817)

5、RecoveryUI 横屏

6、系统导航栏位置调整，横屏后 navigationBarPosition 默认在左边

作为平板项目，需要将位置改为底部,直接修改 navigationBarPosition() 返回 NAV_BAR_BOTTOM

frameworks\base\services\core\java\com\android\server\policy\PhoneWindowManager.java

@NavigationBarPosition

private int navigationBarPosition(int displayWidth, int displayHeight, int displayRotation) {

//cchzneg annotaion for land scape

/*if (mNavigationBarCanMove && displayWidth > displayHeight) {

if (displayRotation == Surface.ROTATION_270) {

return NAV_BAR_LEFT;

} else {

return NAV_BAR_RIGHT;

}

}*/

return NAV_BAR_BOTTOM;

}

这样位置是变为底部了，但是三个按钮都重叠在一起了，需要修改 SystemUI 的布局显示

vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\statusbar\phone\NavigationBarView.java

private void updateRotatedViews() {

//cczheng change rot0 rot90 for landscape

mRotatedViews[Surface.ROTATION_0] =

mRotatedViews[Surface.ROTATION_180] = findViewById(R.id.rot90);

// mRotatedViews[Surface.ROTATION_180] = findViewById(R.id.rot0);

mRotatedViews[Surface.ROTATION_270] =

mRotatedViews[Surface.ROTATION_90] = findViewById(R.id.rot0);

// mRotatedViews[Surface.ROTATION_90] = findViewById(R.id.rot90);

updateCurrentView();

}

顺带再调整下 NavigationBarView 的默认高度和左边 Back 键区域太大的问题

vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\statusbar\phone\NavigationBarInflaterView.java

private View createView(String buttonSpec, ViewGroup parent, LayoutInflater inflater) {

View v = null;

String button = extractButton(buttonSpec);

if (LEFT.equals(button)) {

//cchzheng change NAVSPACE to MENU_IME for small left back click area

String s = Dependency.get(TunerService.class).getValue(NAV_BAR_LEFT, MENU_IME_ROTATE/*NAVSPACE*/);

button = extractButton(s);

} else if (RIGHT.equals(button)) {

String s = Dependency.get(TunerService.class).getValue(NAV_BAR_RIGHT, MENU_IME_ROTATE);

button = extractButton(s);

}

...

frameworks\base\core\res\res\values\dimens.xml

30dp

ok，这样就大功告成了，完美的横屏适配

原文出处：https://www.cnblogs.com/cczheng-666/p/11689854.html