android修改输入法旋转和半屏的方法

zangcf

/media/doraemon/works/android/mtk/6735/b2/alps_ok/frameworks/native/services/inputflinger/InputReader.cpp：：：：：：：：：：
void TouchInputMapper::configureSurface(nsecs_t when, bool* outResetNeeded) {
    int32_t oldDeviceMode = mDeviceMode;

    // Determine device mode.
    if (mParameters.deviceType == Parameters:EVICE_TYPE_POINTER
            && mConfig.pointerGesturesEnabled) {
        mSource = AINPUT_SOURCE_MOUSE;
        mDeviceMode = DEVICE_MODE_POINTER;
        if (hasStylus()) {
            mSource |= AINPUT_SOURCE_STYLUS;
        }
    } else if (mParameters.deviceType == Parameters:EVICE_TYPE_TOUCH_SCREEN
            && mParameters.hasAssociatedDisplay) {
        mSource = AINPUT_SOURCE_TOUCHSCREEN;
        mDeviceMode = DEVICE_MODE_DIRECT;
        if (hasStylus()) {
            mSource |= AINPUT_SOURCE_STYLUS;
        }
    } else if (mParameters.deviceType == Parameters:EVICE_TYPE_TOUCH_NAVIGATION) {
        mSource = AINPUT_SOURCE_TOUCH_NAVIGATION;
        mDeviceMode = DEVICE_MODE_NAVIGATION;
    } else {
        mSource = AINPUT_SOURCE_TOUCHPAD;
        mDeviceMode = DEVICE_MODE_UNSCALED;
    }

    // Ensure we have valid X and Y axes.
    if (!mRawPointerAxes.x.valid || !mRawPointerAxes.y.valid) {
        ALOGW(INDENT "Touch device '%s' did not report support for X or Y axis!  "
                "The device will be inoperable.", getDeviceName().string());
        mDeviceMode = DEVICE_MODE_DISABLED;
        return;
    }

    // Raw width and height in the natural orientation.
    int32_t rawWidth = mRawPointerAxes.x.maxValue - mRawPointerAxes.x.minValue + 1;
    int32_t rawHeight = mRawPointerAxes.y.maxValue - mRawPointerAxes.y.minValue + 1;

    // Get associated display dimensions.
    DisplayViewport newViewport;
    if (mParameters.hasAssociatedDisplay) {
        if (!mConfig.getDisplayInfo(mParameters.associatedDisplayIsExternal, &newViewport)) {
            ALOGI(INDENT "Touch device '%s' could not query the properties of its associated "
                    "display.  The device will be inoperable until the display size "
                    "becomes available.",
                    getDeviceName().string());
            mDeviceMode = DEVICE_MODE_DISABLED;
            return;
        }
    } else {
        newViewport.setNonDisplayViewport(rawWidth, rawHeight);
    }
    bool viewportChanged = mViewport != newViewport;
    if (viewportChanged) {
        mViewport = newViewport;

        if (mDeviceMode == DEVICE_MODE_DIRECT || mDeviceMode == DEVICE_MODE_POINTER) {
            // Convert rotated viewport to natural surface coordinates.
            int32_t naturalLogicalWidth, naturalLogicalHeight;
            int32_t naturalPhysicalWidth, naturalPhysicalHeight;
            int32_t naturalPhysicalLeft, naturalPhysicalTop;
            int32_t naturalDeviceWidth, naturalDeviceHeight;
            switch (mViewport.orientation) {
            case DISPLAY_ORIENTATION_90:
                naturalLogicalWidth = mViewport.logicalBottom - mViewport.logicalTop;
                naturalLogicalHeight = mViewport.logicalRight - mViewport.logicalLeft;
                naturalPhysicalWidth = mViewport.physicalBottom - mViewport.physicalTop;
                naturalPhysicalHeight = mViewport.physicalRight - mViewport.physicalLeft;
                naturalPhysicalLeft = mViewport.deviceHeight - mViewport.physicalBottom;
                naturalPhysicalTop = mViewport.physicalLeft;
                naturalDeviceWidth = mViewport.deviceHeight;
                naturalDeviceHeight = mViewport.deviceWidth;
                break;
            case DISPLAY_ORIENTATION_180:
                naturalLogicalWidth = mViewport.logicalRight - mViewport.logicalLeft;
                naturalLogicalHeight = mViewport.logicalBottom - mViewport.logicalTop;
                naturalPhysicalWidth = mViewport.physicalRight - mViewport.physicalLeft;
                naturalPhysicalHeight = mViewport.physicalBottom - mViewport.physicalTop;
                naturalPhysicalLeft = mViewport.deviceWidth - mViewport.physicalRight;
                naturalPhysicalTop = mViewport.deviceHeight - mViewport.physicalBottom;
                naturalDeviceWidth = mViewport.deviceWidth;
                naturalDeviceHeight = mViewport.deviceHeight;
                break;
            case DISPLAY_ORIENTATION_270:
                naturalLogicalWidth = mViewport.logicalBottom - mViewport.logicalTop;
                naturalLogicalHeight = mViewport.logicalRight - mViewport.logicalLeft;
                naturalPhysicalWidth = mViewport.physicalBottom - mViewport.physicalTop;
                naturalPhysicalHeight = mViewport.physicalRight - mViewport.physicalLeft;
                naturalPhysicalLeft = mViewport.physicalTop;
                naturalPhysicalTop = mViewport.deviceWidth - mViewport.physicalRight;
                naturalDeviceWidth = mViewport.deviceHeight;
                naturalDeviceHeight = mViewport.deviceWidth;
                break;
            case DISPLAY_ORIENTATION_0:
            default:
                naturalLogicalWidth = mViewport.logicalRight - mViewport.logicalLeft;
                naturalLogicalHeight = mViewport.logicalBottom - mViewport.logicalTop;
                naturalPhysicalWidth = mViewport.physicalRight - mViewport.physicalLeft;
                naturalPhysicalHeight = mViewport.physicalBottom - mViewport.physicalTop;
                naturalPhysicalLeft = mViewport.physicalLeft;
                naturalPhysicalTop = mViewport.physicalTop;
                naturalDeviceWidth = mViewport.deviceWidth;
                naturalDeviceHeight = mViewport.deviceHeight;
                break;
            }

//zcfdebug++<<
                naturalLogicalWidth = mViewport.logicalBottom - mViewport.logicalTop;
                naturalLogicalHeight = mViewport.logicalRight - mViewport.logicalLeft;
                naturalPhysicalWidth = mViewport.physicalBottom - mViewport.physicalTop;
                naturalPhysicalHeight = mViewport.physicalRight - mViewport.physicalLeft;
                naturalPhysicalLeft = mViewport.deviceHeight - mViewport.physicalBottom;
                naturalPhysicalTop = mViewport.physicalLeft;
                naturalDeviceWidth = mViewport.deviceHeight;
                naturalDeviceHeight = mViewport.deviceWidth;
                                ALOGI("zcfdebug","naturalLogicalWidth is %d",naturalLogicalWidth);
                                ALOGI("zcfdebug","naturalLogicalHeight is %d",naturalLogicalHeight);
                                ALOGI("zcfdebug","naturalPhysicalWidth is %d",naturalPhysicalWidth);
                                ALOGI("zcfdebug","naturalPhysicalHeight is %d",naturalPhysicalHeight);
                                ALOGI("zcfdebug","naturalPhysicalLeft is %d",naturalPhysicalLeft);
                                ALOGI("zcfdebug","naturalPhysicalTop is %d",naturalPhysicalTop);
                                ALOGI("zcfdebug","naturalDeviceWidth is %d",naturalDeviceWidth);
                                ALOGI("zcfdebug","naturalDeviceHeight is %d",naturalDeviceHeight);
//zcfdebug>>++
            mSurfaceWidth = naturalLogicalWidth * naturalDeviceWidth / naturalPhysicalWidth;
            mSurfaceHeight = naturalLogicalHeight * naturalDeviceHeight / naturalPhysicalHeight;
                        mSurfaceHeight=mSurfaceHeight*2;
            mSurfaceLeft = naturalPhysicalLeft * naturalLogicalWidth / naturalPhysicalWidth;
            mSurfaceTop = naturalPhysicalTop * naturalLogicalHeight / naturalPhysicalHeight;

//zcfdebug--            mSurfaceOrientation = mParameters.orientationAware ?
//zcfdebug--                    mViewport.orientation : DISPLAY_ORIENTATION_0;
            mSurfaceOrientation = DISPLAY_ORIENTATION_90;//zcfdebug++
//zcfdebug--                    mViewport.orientation : DISPLAY_ORIENTATION_0;

        } else {
            mSurfaceWidth = rawWidth;
            mSurfaceHeight = rawHeight;
            mSurfaceLeft = 0;
            mSurfaceTop = 0;
            mSurfaceOrientation = DISPLAY_ORIENTATION_0;
        }
    }