拆解步骤
1、app 强制横屏显示，无视 android:screenOrientation=“portrait” 属性
2、开机动画横屏
3、开机logo、关机充电动画横屏
4、RecoveryUI 横屏
上代码
1、app 强制横屏显示
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
boolean updateRotationUnchecked(boolean forceUpdate) {
////cczheng add for app force landscape
if (true) {
return true;
}
////20200325 pjz add for app force landscape
ScreenRotationAnimation screenRotationAnimation;
if (!forceUpdate) {
if (mDeferredRotationPauseCount > 0) {
// Rotation updates have been paused temporarily. Defer the update until
// updates have been resumed.
if (DEBUG_ORIENTATION) Slog.v(TAG_WM, "Deferring rotation, rotation is paused.");
return false;
}
......
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\wm\DisplayPolicy.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;
}
2、开机动画横屏
DisplayState::eOrientationDefault 修改为 3
frameworks\base\cmds\bootanimation\BootAnimation.cpp
status_t BootAnimation::readyToRun() {
mAssets.addDefaultAssets();
sp<IBinder> dtoken(SurfaceComposerClient::getBuiltInDisplay(
ISurfaceComposer::eDisplayIdMain));
DisplayInfo dinfo;
status_t status = SurfaceComposerClient::getDisplayInfo(dtoken, &dinfo);
if (status)
return -1;
//cczheng add for land scap [S]
if (2 > 1) {
int temp = dinfo.h;
dinfo.h = dinfo.w;
dinfo.w = temp;
}
Rect destRect(dinfo.w, dinfo.h);
//270
t.setDisplayProjection(mDisplayToken, 3, destRect, destRect);
t.apply();
//cczheng add for land scap [E]
/// M: The tablet rotation maybe 90/270 degrees, so set the lcm config for tablet
/*t.setDisplayProjection(mDisplayToken, DisplayState::eOrientationDefault,
Rect(dinfo.w, dinfo.h), Rect(dinfo.w, dinfo.h));
t.apply();*/
// create the native surface
sp<SurfaceControl> control = session()->createSurface(String8("BootAnimation"),
dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);
t.setLayer(control, 0x40000000)
.apply();
.....
}
3、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 = hdplus
对应的资源文件位置在 vendor/mediatek/proprietary/bootable/bootloader/lk/dev/logo/hdplus
可以看到 hdplus 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 phical_screen.rotation = 270
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 phical_screen.rotation = 270
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;
}
关机充电动画错位问题
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
/vendor/mediatek/proprietary/external/libshowlogo/cust_display.h
之前都是通过修改 cust_display.h 文件夹中预置宏定义，10.0 中代码结构做了调整，宏定义都没了，初始化写在了 show_animation_common.c 中,修改 rotation = 3 对调 lcm_width 和 lcm_height，当 lcm_width1280 && lcm_height800 时动画就不错位了，这里根据你自己的分辨率情况自行微调，不过一般系统默认的配置值都是对了
vendor/mediatek/proprietary/external/libshowlogo/show_animation_common.c
/*
* Fill resolution structure based on lcd size
*
*/
void init_charging_animation_ui_dimension() {
int lcm_width, lcm_height;
struct fb_var_screeninfo vinfo;
display_fd = open("/dev/graphics/fb0", O_RDONLY);
if (display_fd < 0) {
SLOGD("[show_animation_common: %s %d]open mtkfb fail...\n",__FUNCTION__,__LINE__);
}
if (ioctl(display_fd, FBIOGET_VSCREENINFO, &vinfo) < 0) {
close(display_fd);
SLOGD("[show_animation_common: %s %d]ioctl FBIOGET_VSCREENINFO failed\n",__FUNCTION__,__LINE__);
}
close(display_fd);
lcm_width = vinfo.xres;
lcm_height = vinfo.yres;
int rotation = getValue(MTK_LCM_PHYSICAL_ROTATION_PROP, "0");
rotation = 3;
// cczheng add rotation = 3 for charging landscape
if (MTK_LOG_ENABLE == 1) {
SLOGD("[libshowlogo: %s %d]rotation = %d\n",__FUNCTION__,__LINE__, rotation);
}
if ((3 == rotation)|| (1 == rotation)){
lcm_width = vinfo.yres;
lcm_height = vinfo.xres;
}
SLOGD("[show_animation_common: %s %d] lcm_width and lcm_height= %d , %d \n",__FUNCTION__,__LINE__,lcm_width,lcm_height);
if(lcm_width==1080) {
charg_anim_ui_dimen.cap_left =387;
charg_anim_ui_dimen.cap_right= 691;
charg_anim_ui_dimen.num_left=351+84;
charg_anim_ui_dimen.num_right=435+84;
4、RecoveryUI 横屏
RecoveryUI 在9.0 之前安卓源码并没有为我们适配好旋转配置，之前都是通过自己新增 mt_graphic_rotate.cpp 和 mt_graphic_rotate.h 文件来实现旋转。10.0 中代码也进行了较大重构相比之前，只需修改简单配置 rotation 就能旋转为横屏。
rotation = GRRotation::LEFT; 270
rotation = GRRotation::DOWN; 180
rotation = GRRotation::RIGHT; 90
bootable\recovery\minui\graphics.cpp
int gr_init() {
.....
gr_backend = backend.release();
int overscan_percent = android::base::GetIntProperty("ro.minui.overscan_percent", 0);
overscan_offset_x = gr_draw->width * overscan_percent / 100;
overscan_offset_y = gr_draw->height * overscan_percent / 100;
gr_flip();
gr_flip();
if (!gr_draw) {
printf("gr_init: gr_draw becomes nullptr after gr_flip\n");
return -1;
}
std::string rotation_str =
android::base::GetProperty("ro.minui.default_rotation", "ROTATION_NONE");
if (rotation_str == "ROTATION_RIGHT") {
gr_rotate(GRRotation::RIGHT);
} else if (rotation_str == "ROTATION_DOWN") {
gr_rotate(GRRotation::DOWN);
} else if (rotation_str == "ROTATION_LEFT") {
gr_rotate(GRRotation::LEFT);
} else { // "ROTATION_NONE" or unknown string
gr_rotate(GRRotation::NONE);
}
rotation = GRRotation::LEFT;
//cczheng add rotation = 3 for recoveryUI landscape
ok，这样就大功告成了，完美的横屏适配
