diff options
Diffstat (limited to 'libs/ui/InputReader.cpp')
| -rw-r--r-- | libs/ui/InputReader.cpp | 1844 |
1 files changed, 1844 insertions, 0 deletions
diff --git a/libs/ui/InputReader.cpp b/libs/ui/InputReader.cpp new file mode 100644 index 0000000..76f9ec9 --- /dev/null +++ b/libs/ui/InputReader.cpp @@ -0,0 +1,1844 @@ +// +// Copyright 2010 The Android Open Source Project +// +// The input reader. +// +#define LOG_TAG "InputReader" + +//#define LOG_NDEBUG 0 + +// Log debug messages for each raw event received from the EventHub. +#define DEBUG_RAW_EVENTS 0 + +// Log debug messages about touch screen filtering hacks. +#define DEBUG_HACKS 1 + +// Log debug messages about virtual key processing. +#define DEBUG_VIRTUAL_KEYS 1 + +// Log debug messages about pointers. +#define DEBUG_POINTERS 1 + +#include <cutils/log.h> +#include <ui/InputReader.h> + +#include <stddef.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <limits.h> + +namespace android { + +// --- Static Functions --- + +template<typename T> +inline static T abs(const T& value) { + return value < 0 ? - value : value; +} + +template<typename T> +inline static T min(const T& a, const T& b) { + return a < b ? a : b; +} + +int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState) { + int32_t mask; + switch (keyCode) { + case KEYCODE_ALT_LEFT: + mask = META_ALT_LEFT_ON; + break; + case KEYCODE_ALT_RIGHT: + mask = META_ALT_RIGHT_ON; + break; + case KEYCODE_SHIFT_LEFT: + mask = META_SHIFT_LEFT_ON; + break; + case KEYCODE_SHIFT_RIGHT: + mask = META_SHIFT_RIGHT_ON; + break; + case KEYCODE_SYM: + mask = META_SYM_ON; + break; + default: + return oldMetaState; + } + + int32_t newMetaState = down ? oldMetaState | mask : oldMetaState & ~ mask + & ~ (META_ALT_ON | META_SHIFT_ON); + + if (newMetaState & (META_ALT_LEFT_ON | META_ALT_RIGHT_ON)) { + newMetaState |= META_ALT_ON; + } + + if (newMetaState & (META_SHIFT_LEFT_ON | META_SHIFT_RIGHT_ON)) { + newMetaState |= META_SHIFT_ON; + } + + return newMetaState; +} + +static const int32_t keyCodeRotationMap[][4] = { + // key codes enumerated counter-clockwise with the original (unrotated) key first + // no rotation, 90 degree rotation, 180 degree rotation, 270 degree rotation + { KEYCODE_DPAD_DOWN, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_UP, KEYCODE_DPAD_LEFT }, + { KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_UP, KEYCODE_DPAD_LEFT, KEYCODE_DPAD_DOWN }, + { KEYCODE_DPAD_UP, KEYCODE_DPAD_LEFT, KEYCODE_DPAD_DOWN, KEYCODE_DPAD_RIGHT }, + { KEYCODE_DPAD_LEFT, KEYCODE_DPAD_DOWN, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_UP }, +}; +static const int keyCodeRotationMapSize = + sizeof(keyCodeRotationMap) / sizeof(keyCodeRotationMap[0]); + +int32_t rotateKeyCode(int32_t keyCode, int32_t orientation) { + if (orientation != InputDispatchPolicyInterface::ROTATION_0) { + for (int i = 0; i < keyCodeRotationMapSize; i++) { + if (keyCode == keyCodeRotationMap[i][0]) { + return keyCodeRotationMap[i][orientation]; + } + } + } + return keyCode; +} + + +// --- InputDevice --- + +InputDevice::InputDevice(int32_t id, uint32_t classes, String8 name) : + id(id), classes(classes), name(name), ignored(false) { +} + +void InputDevice::reset() { + if (isKeyboard()) { + keyboard.reset(); + } + + if (isTrackball()) { + trackball.reset(); + } + + if (isMultiTouchScreen()) { + multiTouchScreen.reset(); + } else if (isSingleTouchScreen()) { + singleTouchScreen.reset(); + } + + if (isTouchScreen()) { + touchScreen.reset(); + } +} + + +// --- InputDevice::TouchData --- + +void InputDevice::TouchData::copyFrom(const TouchData& other) { + pointerCount = other.pointerCount; + idBits = other.idBits; + + for (uint32_t i = 0; i < pointerCount; i++) { + pointers[i] = other.pointers[i]; + idToIndex[i] = other.idToIndex[i]; + } +} + + +// --- InputDevice::KeyboardState --- + +void InputDevice::KeyboardState::reset() { + current.metaState = META_NONE; + current.downTime = 0; +} + + +// --- InputDevice::TrackballState --- + +void InputDevice::TrackballState::reset() { + accumulator.clear(); + current.down = false; + current.downTime = 0; +} + + +// --- InputDevice::TouchScreenState --- + +void InputDevice::TouchScreenState::reset() { + lastTouch.clear(); + downTime = 0; + currentVirtualKey.down = false; + + for (uint32_t i = 0; i < MAX_POINTERS; i++) { + averagingTouchFilter.historyStart[i] = 0; + averagingTouchFilter.historyEnd[i] = 0; + } + + jumpyTouchFilter.jumpyPointsDropped = 0; +} + +void InputDevice::TouchScreenState::calculatePointerIds() { + uint32_t currentPointerCount = currentTouch.pointerCount; + uint32_t lastPointerCount = lastTouch.pointerCount; + + if (currentPointerCount == 0) { + // No pointers to assign. + currentTouch.idBits.clear(); + } else if (lastPointerCount == 0) { + // All pointers are new. + currentTouch.idBits.clear(); + for (uint32_t i = 0; i < currentPointerCount; i++) { + currentTouch.pointers[i].id = i; + currentTouch.idToIndex[i] = i; + currentTouch.idBits.markBit(i); + } + } else if (currentPointerCount == 1 && lastPointerCount == 1) { + // Only one pointer and no change in count so it must have the same id as before. + uint32_t id = lastTouch.pointers[0].id; + currentTouch.pointers[0].id = id; + currentTouch.idToIndex[id] = 0; + currentTouch.idBits.value = BitSet32::valueForBit(id); + } else { + // General case. + // We build a heap of squared euclidean distances between current and last pointers + // associated with the current and last pointer indices. Then, we find the best + // match (by distance) for each current pointer. + struct { + uint32_t currentPointerIndex : 8; + uint32_t lastPointerIndex : 8; + uint64_t distance : 48; // squared distance + } heap[MAX_POINTERS * MAX_POINTERS]; + + uint32_t heapSize = 0; + for (uint32_t currentPointerIndex = 0; currentPointerIndex < currentPointerCount; + currentPointerIndex++) { + for (uint32_t lastPointerIndex = 0; lastPointerIndex < lastPointerCount; + lastPointerIndex++) { + int64_t deltaX = currentTouch.pointers[currentPointerIndex].x + - lastTouch.pointers[lastPointerIndex].x; + int64_t deltaY = currentTouch.pointers[currentPointerIndex].y + - lastTouch.pointers[lastPointerIndex].y; + + uint64_t distance = uint64_t(deltaX * deltaX + deltaY * deltaY); + + // Insert new element into the heap (sift up). + heapSize += 1; + uint32_t insertionIndex = heapSize; + while (insertionIndex > 1) { + uint32_t parentIndex = (insertionIndex - 1) / 2; + if (distance < heap[parentIndex].distance) { + heap[insertionIndex] = heap[parentIndex]; + insertionIndex = parentIndex; + } else { + break; + } + } + heap[insertionIndex].currentPointerIndex = currentPointerIndex; + heap[insertionIndex].lastPointerIndex = lastPointerIndex; + heap[insertionIndex].distance = distance; + } + } + + // Pull matches out by increasing order of distance. + // To avoid reassigning pointers that have already been matched, the loop keeps track + // of which last and current pointers have been matched using the matchedXXXBits variables. + // It also tracks the used pointer id bits. + BitSet32 matchedLastBits(0); + BitSet32 matchedCurrentBits(0); + BitSet32 usedIdBits(0); + bool first = true; + for (uint32_t i = min(currentPointerCount, lastPointerCount); i > 0; i--) { + for (;;) { + if (first) { + // The first time through the loop, we just consume the root element of + // the heap (the one with smalled distance). + first = false; + } else { + // Previous iterations consumed the root element of the heap. + // Pop root element off of the heap (sift down). + heapSize -= 1; + assert(heapSize > 0); + + // Sift down to find where the element at index heapSize needs to be moved. + uint32_t rootIndex = 0; + for (;;) { + uint32_t childIndex = rootIndex * 2 + 1; + if (childIndex >= heapSize) { + break; + } + + if (childIndex + 1 < heapSize + && heap[childIndex + 1].distance < heap[childIndex].distance) { + childIndex += 1; + } + + if (heap[heapSize].distance < heap[childIndex].distance) { + break; + } + + heap[rootIndex] = heap[childIndex]; + rootIndex = childIndex; + } + heap[rootIndex] = heap[heapSize]; + } + + uint32_t currentPointerIndex = heap[0].currentPointerIndex; + if (matchedCurrentBits.hasBit(currentPointerIndex)) continue; // already matched + + uint32_t lastPointerIndex = heap[0].lastPointerIndex; + if (matchedLastBits.hasBit(lastPointerIndex)) continue; // already matched + + matchedCurrentBits.markBit(currentPointerIndex); + matchedLastBits.markBit(lastPointerIndex); + + uint32_t id = lastTouch.pointers[lastPointerIndex].id; + currentTouch.pointers[currentPointerIndex].id = id; + currentTouch.idToIndex[id] = currentPointerIndex; + usedIdBits.markBit(id); + break; + } + } + + // Assign fresh ids to new pointers. + if (currentPointerCount > lastPointerCount) { + for (uint32_t i = currentPointerCount - lastPointerCount; ;) { + uint32_t currentPointerIndex = matchedCurrentBits.firstUnmarkedBit(); + uint32_t id = usedIdBits.firstUnmarkedBit(); + + currentTouch.pointers[currentPointerIndex].id = id; + currentTouch.idToIndex[id] = currentPointerIndex; + usedIdBits.markBit(id); + + if (--i == 0) break; // done + matchedCurrentBits.markBit(currentPointerIndex); + } + } + + // Fix id bits. + currentTouch.idBits = usedIdBits; + } +} + +/* Special hack for devices that have bad screen data: if one of the + * points has moved more than a screen height from the last position, + * then drop it. */ +bool InputDevice::TouchScreenState::applyBadTouchFilter() { + uint32_t pointerCount = currentTouch.pointerCount; + + // Nothing to do if there are no points. + if (pointerCount == 0) { + return false; + } + + // Don't do anything if a finger is going down or up. We run + // here before assigning pointer IDs, so there isn't a good + // way to do per-finger matching. + if (pointerCount != lastTouch.pointerCount) { + return false; + } + + // We consider a single movement across more than a 7/16 of + // the long size of the screen to be bad. This was a magic value + // determined by looking at the maximum distance it is feasible + // to actually move in one sample. + int32_t maxDeltaY = parameters.yAxis.range * 7 / 16; + + // XXX The original code in InputDevice.java included commented out + // code for testing the X axis. Note that when we drop a point + // we don't actually restore the old X either. Strange. + // The old code also tries to track when bad points were previously + // detected but it turns out that due to the placement of a "break" + // at the end of the loop, we never set mDroppedBadPoint to true + // so it is effectively dead code. + // Need to figure out if the old code is busted or just overcomplicated + // but working as intended. + + // Look through all new points and see if any are farther than + // acceptable from all previous points. + for (uint32_t i = pointerCount; i-- > 0; ) { + int32_t y = currentTouch.pointers[i].y; + int32_t closestY = INT_MAX; + int32_t closestDeltaY = 0; + +#if DEBUG_HACKS + LOGD("BadTouchFilter: Looking at next point #%d: y=%d", i, y); +#endif + + for (uint32_t j = pointerCount; j-- > 0; ) { + int32_t lastY = lastTouch.pointers[j].y; + int32_t deltaY = abs(y - lastY); + +#if DEBUG_HACKS + LOGD("BadTouchFilter: Comparing with last point #%d: y=%d deltaY=%d", + j, lastY, deltaY); +#endif + + if (deltaY < maxDeltaY) { + goto SkipSufficientlyClosePoint; + } + if (deltaY < closestDeltaY) { + closestDeltaY = deltaY; + closestY = lastY; + } + } + + // Must not have found a close enough match. +#if DEBUG_HACKS + LOGD("BadTouchFilter: Dropping bad point #%d: newY=%d oldY=%d deltaY=%d maxDeltaY=%d", + i, y, closestY, closestDeltaY, maxDeltaY); +#endif + + currentTouch.pointers[i].y = closestY; + return true; // XXX original code only corrects one point + + SkipSufficientlyClosePoint: ; + } + + // No change. + return false; +} + +/* Special hack for devices that have bad screen data: drop points where + * the coordinate value for one axis has jumped to the other pointer's location. + */ +bool InputDevice::TouchScreenState::applyJumpyTouchFilter() { + uint32_t pointerCount = currentTouch.pointerCount; + if (lastTouch.pointerCount != pointerCount) { +#if DEBUG_HACKS + LOGD("JumpyTouchFilter: Different pointer count %d -> %d", + lastTouch.pointerCount, pointerCount); + for (uint32_t i = 0; i < pointerCount; i++) { + LOGD(" Pointer %d (%d, %d)", i, + currentTouch.pointers[i].x, currentTouch.pointers[i].y); + } +#endif + + if (jumpyTouchFilter.jumpyPointsDropped < JUMPY_TRANSITION_DROPS) { + if (lastTouch.pointerCount == 1 && pointerCount == 2) { + // Just drop the first few events going from 1 to 2 pointers. + // They're bad often enough that they're not worth considering. + currentTouch.pointerCount = 1; + jumpyTouchFilter.jumpyPointsDropped += 1; + +#if DEBUG_HACKS + LOGD("JumpyTouchFilter: Pointer 2 dropped"); +#endif + return true; + } else if (lastTouch.pointerCount == 2 && pointerCount == 1) { + // The event when we go from 2 -> 1 tends to be messed up too + currentTouch.pointerCount = 2; + currentTouch.pointers[0] = lastTouch.pointers[0]; + currentTouch.pointers[1] = lastTouch.pointers[1]; + jumpyTouchFilter.jumpyPointsDropped += 1; + +#if DEBUG_HACKS + for (int32_t i = 0; i < 2; i++) { + LOGD("JumpyTouchFilter: Pointer %d replaced (%d, %d)", i, + currentTouch.pointers[i].x, currentTouch.pointers[i].y); + } +#endif + return true; + } + } + // Reset jumpy points dropped on other transitions or if limit exceeded. + jumpyTouchFilter.jumpyPointsDropped = 0; + +#if DEBUG_HACKS + LOGD("JumpyTouchFilter: Transition - drop limit reset"); +#endif + return false; + } + + // We have the same number of pointers as last time. + // A 'jumpy' point is one where the coordinate value for one axis + // has jumped to the other pointer's location. No need to do anything + // else if we only have one pointer. + if (pointerCount < 2) { + return false; + } + + if (jumpyTouchFilter.jumpyPointsDropped < JUMPY_DROP_LIMIT) { + int jumpyEpsilon = parameters.yAxis.range / JUMPY_EPSILON_DIVISOR; + + // We only replace the single worst jumpy point as characterized by pointer distance + // in a single axis. + int32_t badPointerIndex = -1; + int32_t badPointerReplacementIndex = -1; + int32_t badPointerDistance = INT_MIN; // distance to be corrected + + for (uint32_t i = pointerCount; i-- > 0; ) { + int32_t x = currentTouch.pointers[i].x; + int32_t y = currentTouch.pointers[i].y; + +#if DEBUG_HACKS + LOGD("JumpyTouchFilter: Point %d (%d, %d)", i, x, y); +#endif + + // Check if a touch point is too close to another's coordinates + bool dropX = false, dropY = false; + for (uint32_t j = 0; j < pointerCount; j++) { + if (i == j) { + continue; + } + + if (abs(x - currentTouch.pointers[j].x) <= jumpyEpsilon) { + dropX = true; + break; + } + + if (abs(y - currentTouch.pointers[j].y) <= jumpyEpsilon) { + dropY = true; + break; + } + } + if (! dropX && ! dropY) { + continue; // not jumpy + } + + // Find a replacement candidate by comparing with older points on the + // complementary (non-jumpy) axis. + int32_t distance = INT_MIN; // distance to be corrected + int32_t replacementIndex = -1; + + if (dropX) { + // X looks too close. Find an older replacement point with a close Y. + int32_t smallestDeltaY = INT_MAX; + for (uint32_t j = 0; j < pointerCount; j++) { + int32_t deltaY = abs(y - lastTouch.pointers[j].y); + if (deltaY < smallestDeltaY) { + smallestDeltaY = deltaY; + replacementIndex = j; + } + } + distance = abs(x - lastTouch.pointers[replacementIndex].x); + } else { + // Y looks too close. Find an older replacement point with a close X. + int32_t smallestDeltaX = INT_MAX; + for (uint32_t j = 0; j < pointerCount; j++) { + int32_t deltaX = abs(x - lastTouch.pointers[j].x); + if (deltaX < smallestDeltaX) { + smallestDeltaX = deltaX; + replacementIndex = j; + } + } + distance = abs(y - lastTouch.pointers[replacementIndex].y); + } + + // If replacing this pointer would correct a worse error than the previous ones + // considered, then use this replacement instead. + if (distance > badPointerDistance) { + badPointerIndex = i; + badPointerReplacementIndex = replacementIndex; + badPointerDistance = distance; + } + } + + // Correct the jumpy pointer if one was found. + if (badPointerIndex >= 0) { +#if DEBUG_HACKS + LOGD("JumpyTouchFilter: Replacing bad pointer %d with (%d, %d)", + badPointerIndex, + lastTouch.pointers[badPointerReplacementIndex].x, + lastTouch.pointers[badPointerReplacementIndex].y); +#endif + + currentTouch.pointers[badPointerIndex].x = + lastTouch.pointers[badPointerReplacementIndex].x; + currentTouch.pointers[badPointerIndex].y = + lastTouch.pointers[badPointerReplacementIndex].y; + jumpyTouchFilter.jumpyPointsDropped += 1; + return true; + } + } + + jumpyTouchFilter.jumpyPointsDropped = 0; + return false; +} + +/* Special hack for devices that have bad screen data: aggregate and + * compute averages of the coordinate data, to reduce the amount of + * jitter seen by applications. */ +void InputDevice::TouchScreenState::applyAveragingTouchFilter() { + for (uint32_t currentIndex = 0; currentIndex < currentTouch.pointerCount; currentIndex++) { + uint32_t id = currentTouch.pointers[currentIndex].id; + int32_t x = currentTouch.pointers[currentIndex].x; + int32_t y = currentTouch.pointers[currentIndex].y; + int32_t pressure = currentTouch.pointers[currentIndex].pressure; + + if (lastTouch.idBits.hasBit(id)) { + // Pointer still down compute average. + uint32_t start = averagingTouchFilter.historyStart[id]; + uint32_t end = averagingTouchFilter.historyEnd[id]; + + int64_t deltaX = x - averagingTouchFilter.historyData[end].pointers[id].x; + int64_t deltaY = y - averagingTouchFilter.historyData[end].pointers[id].y; + uint64_t distance = uint64_t(deltaX * deltaX + deltaY * deltaY); + +#if DEBUG_HACKS + LOGD("AveragingTouchFilter: Pointer id %d - Distance from last sample: %lld", + id, distance); +#endif + + if (distance < AVERAGING_DISTANCE_LIMIT) { + end += 1; + if (end > AVERAGING_HISTORY_SIZE) { + end = 0; + } + + if (end == start) { + start += 1; + if (start > AVERAGING_HISTORY_SIZE) { + start = 0; + } + } + + averagingTouchFilter.historyStart[id] = start; + averagingTouchFilter.historyEnd[id] = end; + averagingTouchFilter.historyData[end].pointers[id].x = x; + averagingTouchFilter.historyData[end].pointers[id].y = y; + averagingTouchFilter.historyData[end].pointers[id].pressure = pressure; + + int32_t averagedX = 0; + int32_t averagedY = 0; + int32_t totalPressure = 0; + for (;;) { + int32_t historicalX = averagingTouchFilter.historyData[start].pointers[id].x; + int32_t historicalY = averagingTouchFilter.historyData[start].pointers[id].x; + int32_t historicalPressure = averagingTouchFilter.historyData[start] + .pointers[id].pressure; + + averagedX += historicalX; + averagedY += historicalY; + totalPressure += historicalPressure; + + if (start == end) { + break; + } + + start += 1; + if (start > AVERAGING_HISTORY_SIZE) { + start = 0; + } + } + + averagedX /= totalPressure; + averagedY /= totalPressure; + +#if DEBUG_HACKS + LOGD("AveragingTouchFilter: Pointer id %d - " + "totalPressure=%d, averagedX=%d, averagedY=%d", id, totalPressure, + averagedX, averagedY); +#endif + + currentTouch.pointers[currentIndex].x = averagedX; + currentTouch.pointers[currentIndex].y = averagedY; + } else { +#if DEBUG_HACKS + LOGD("AveragingTouchFilter: Pointer id %d - Exceeded max distance", id); +#endif + } + } else { +#if DEBUG_HACKS + LOGD("AveragingTouchFilter: Pointer id %d - Pointer went up", id); +#endif + } + + // Reset pointer history. + averagingTouchFilter.historyStart[id] = 0; + averagingTouchFilter.historyEnd[id] = 0; + averagingTouchFilter.historyData[0].pointers[id].x = x; + averagingTouchFilter.historyData[0].pointers[id].y = y; + averagingTouchFilter.historyData[0].pointers[id].pressure = pressure; + } +} + +bool InputDevice::TouchScreenState::isPointInsideDisplay(int32_t x, int32_t y) const { + return x >= parameters.xAxis.minValue + && x <= parameters.xAxis.maxValue + && y >= parameters.yAxis.minValue + && y <= parameters.yAxis.maxValue; +} + + +// --- InputDevice::SingleTouchScreenState --- + +void InputDevice::SingleTouchScreenState::reset() { + accumulator.clear(); + current.down = false; + current.x = 0; + current.y = 0; + current.pressure = 0; + current.size = 0; +} + + +// --- InputDevice::MultiTouchScreenState --- + +void InputDevice::MultiTouchScreenState::reset() { + accumulator.clear(); +} + + +// --- InputReader --- + +InputReader::InputReader(const sp<EventHubInterface>& eventHub, + const sp<InputDispatchPolicyInterface>& policy, + const sp<InputDispatcherInterface>& dispatcher) : + mEventHub(eventHub), mPolicy(policy), mDispatcher(dispatcher) { + resetGlobalMetaState(); + resetDisplayProperties(); + updateGlobalVirtualKeyState(); +} + +InputReader::~InputReader() { + for (size_t i = 0; i < mDevices.size(); i++) { + delete mDevices.valueAt(i); + } +} + +void InputReader::loopOnce() { + RawEvent rawEvent; + mEventHub->getEvent(& rawEvent.deviceId, & rawEvent.type, & rawEvent.scanCode, + & rawEvent.keyCode, & rawEvent.flags, & rawEvent.value, & rawEvent.when); + + // Replace the event timestamp so it is in same timebase as java.lang.System.nanoTime() + // and android.os.SystemClock.uptimeMillis() as expected by the rest of the system. + rawEvent.when = systemTime(SYSTEM_TIME_MONOTONIC); + +#if DEBUG_RAW_EVENTS + LOGD("Input event: device=0x%x type=0x%x scancode=%d keycode=%d value=%d", + rawEvent.deviceId, rawEvent.type, rawEvent.scanCode, rawEvent.keyCode, + rawEvent.value); +#endif + + process(& rawEvent); +} + +void InputReader::process(const RawEvent* rawEvent) { + switch (rawEvent->type) { + case EventHubInterface::DEVICE_ADDED: + handleDeviceAdded(rawEvent); + break; + + case EventHubInterface::DEVICE_REMOVED: + handleDeviceRemoved(rawEvent); + break; + + case EV_SYN: + handleSync(rawEvent); + break; + + case EV_KEY: + handleKey(rawEvent); + break; + + case EV_REL: + handleRelativeMotion(rawEvent); + break; + + case EV_ABS: + handleAbsoluteMotion(rawEvent); + break; + + case EV_SW: + handleSwitch(rawEvent); + break; + } +} + +void InputReader::handleDeviceAdded(const RawEvent* rawEvent) { + InputDevice* device = getDevice(rawEvent->deviceId); + if (device) { + LOGW("Ignoring spurious device added event for deviceId %d.", rawEvent->deviceId); + return; + } + + addDevice(rawEvent->when, rawEvent->deviceId); +} + +void InputReader::handleDeviceRemoved(const RawEvent* rawEvent) { + InputDevice* device = getDevice(rawEvent->deviceId); + if (! device) { + LOGW("Ignoring spurious device removed event for deviceId %d.", rawEvent->deviceId); + return; + } + + removeDevice(rawEvent->when, device); +} + +void InputReader::handleSync(const RawEvent* rawEvent) { + InputDevice* device = getNonIgnoredDevice(rawEvent->deviceId); + if (! device) return; + + if (rawEvent->scanCode == SYN_MT_REPORT) { + // MultiTouch Sync: The driver has returned all data for *one* of the pointers. + // We drop pointers with pressure <= 0 since that indicates they are not down. + if (device->isMultiTouchScreen()) { + uint32_t pointerIndex = device->multiTouchScreen.accumulator.pointerCount; + + if (device->multiTouchScreen.accumulator.pointers[pointerIndex].fields) { + if (pointerIndex == MAX_POINTERS) { + LOGW("MultiTouch device driver returned more than maximum of %d pointers.", + MAX_POINTERS); + } else { + pointerIndex += 1; + device->multiTouchScreen.accumulator.pointerCount = pointerIndex; + } + } + + device->multiTouchScreen.accumulator.pointers[pointerIndex].clear(); + } + } else if (rawEvent->scanCode == SYN_REPORT) { + // General Sync: The driver has returned all data for the current event update. + if (device->isMultiTouchScreen()) { + if (device->multiTouchScreen.accumulator.isDirty()) { + onMultiTouchScreenStateChanged(rawEvent->when, device); + device->multiTouchScreen.accumulator.clear(); + } + } else if (device->isSingleTouchScreen()) { + if (device->singleTouchScreen.accumulator.isDirty()) { + onSingleTouchScreenStateChanged(rawEvent->when, device); + device->singleTouchScreen.accumulator.clear(); + } + } + + if (device->trackball.accumulator.isDirty()) { + onTrackballStateChanged(rawEvent->when, device); + device->trackball.accumulator.clear(); + } + } +} + +void InputReader::handleKey(const RawEvent* rawEvent) { + InputDevice* device = getNonIgnoredDevice(rawEvent->deviceId); + if (! device) return; + + bool down = rawEvent->value != 0; + int32_t scanCode = rawEvent->scanCode; + + if (device->isKeyboard() && (scanCode < BTN_FIRST || scanCode > BTN_LAST)) { + int32_t keyCode = rawEvent->keyCode; + onKey(rawEvent->when, device, down, keyCode, scanCode, rawEvent->flags); + } else if (device->isSingleTouchScreen()) { + switch (rawEvent->scanCode) { + case BTN_TOUCH: + device->singleTouchScreen.accumulator.fields |= + InputDevice::SingleTouchScreenState::Accumulator::FIELD_BTN_TOUCH; + device->singleTouchScreen.accumulator.btnTouch = down; + break; + } + } else if (device->isTrackball()) { + switch (rawEvent->scanCode) { + case BTN_MOUSE: + device->trackball.accumulator.fields |= + InputDevice::TrackballState::Accumulator::FIELD_BTN_MOUSE; + device->trackball.accumulator.btnMouse = down; + + // send the down immediately + // XXX this emulates the old behavior of KeyInputQueue, unclear whether it is + // necessary or if we can wait until the next sync + onTrackballStateChanged(rawEvent->when, device); + device->trackball.accumulator.clear(); + break; + } + } +} + +void InputReader::handleRelativeMotion(const RawEvent* rawEvent) { + InputDevice* device = getNonIgnoredDevice(rawEvent->deviceId); + if (! device) return; + + if (device->isTrackball()) { + switch (rawEvent->scanCode) { + case REL_X: + device->trackball.accumulator.fields |= + InputDevice::TrackballState::Accumulator::FIELD_REL_X; + device->trackball.accumulator.relX = rawEvent->value; + break; + case REL_Y: + device->trackball.accumulator.fields |= + InputDevice::TrackballState::Accumulator::FIELD_REL_Y; + device->trackball.accumulator.relY = rawEvent->value; + break; + } + } +} + +void InputReader::handleAbsoluteMotion(const RawEvent* rawEvent) { + InputDevice* device = getNonIgnoredDevice(rawEvent->deviceId); + if (! device) return; + + if (device->isMultiTouchScreen()) { + uint32_t pointerIndex = device->multiTouchScreen.accumulator.pointerCount; + InputDevice::MultiTouchScreenState::Accumulator::Pointer* pointer = + & device->multiTouchScreen.accumulator.pointers[pointerIndex]; + + switch (rawEvent->scanCode) { + case ABS_MT_POSITION_X: + pointer->fields |= + InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_POSITION_X; + pointer->absMTPositionX = rawEvent->value; + break; + case ABS_MT_POSITION_Y: + pointer->fields |= + InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_POSITION_Y; + pointer->absMTPositionY = rawEvent->value; + break; + case ABS_MT_TOUCH_MAJOR: + pointer->fields |= + InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_TOUCH_MAJOR; + pointer->absMTTouchMajor = rawEvent->value; + break; + case ABS_MT_WIDTH_MAJOR: + pointer->fields |= + InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_WIDTH_MAJOR; + pointer->absMTWidthMajor = rawEvent->value; + break; + case ABS_MT_TRACKING_ID: + pointer->fields |= + InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_TRACKING_ID; + pointer->absMTTrackingId = rawEvent->value; + break; + } + } else if (device->isSingleTouchScreen()) { + switch (rawEvent->scanCode) { + case ABS_X: + device->singleTouchScreen.accumulator.fields |= + InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_X; + device->singleTouchScreen.accumulator.absX = rawEvent->value; + break; + case ABS_Y: + device->singleTouchScreen.accumulator.fields |= + InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_Y; + device->singleTouchScreen.accumulator.absY = rawEvent->value; + break; + case ABS_PRESSURE: + device->singleTouchScreen.accumulator.fields |= + InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_PRESSURE; + device->singleTouchScreen.accumulator.absPressure = rawEvent->value; + break; + case ABS_TOOL_WIDTH: + device->singleTouchScreen.accumulator.fields |= + InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_TOOL_WIDTH; + device->singleTouchScreen.accumulator.absToolWidth = rawEvent->value; + break; + } + } +} + +void InputReader::handleSwitch(const RawEvent* rawEvent) { + InputDevice* device = getNonIgnoredDevice(rawEvent->deviceId); + if (! device) return; + + onSwitch(rawEvent->when, device, rawEvent->value != 0, rawEvent->scanCode); +} + +void InputReader::onKey(nsecs_t when, InputDevice* device, + bool down, int32_t keyCode, int32_t scanCode, uint32_t policyFlags) { + /* Refresh display properties so we can rotate key codes according to display orientation */ + + if (! refreshDisplayProperties()) { + return; + } + + /* Update device state */ + + int32_t oldMetaState = device->keyboard.current.metaState; + int32_t newMetaState = updateMetaState(keyCode, down, oldMetaState); + if (oldMetaState != newMetaState) { + device->keyboard.current.metaState = newMetaState; + resetGlobalMetaState(); + } + + // FIXME if we send a down event about a rotated key press we should ensure that we send + // a corresponding up event about the rotated key press even if the orientation + // has changed in the meantime + keyCode = rotateKeyCode(keyCode, mDisplayOrientation); + + if (down) { + device->keyboard.current.downTime = when; + } + + /* Apply policy */ + + int32_t policyActions = mPolicy->interceptKey(when, device->id, + down, keyCode, scanCode, policyFlags); + + if (! applyStandardInputDispatchPolicyActions(when, policyActions, & policyFlags)) { + return; // event dropped + } + + /* Enqueue key event for dispatch */ + + int32_t keyEventAction; + if (down) { + device->keyboard.current.downTime = when; + keyEventAction = KEY_EVENT_ACTION_DOWN; + } else { + keyEventAction = KEY_EVENT_ACTION_UP; + } + + int32_t keyEventFlags = KEY_EVENT_FLAG_FROM_SYSTEM; + if (policyActions & InputDispatchPolicyInterface::ACTION_WOKE_HERE) { + keyEventFlags = keyEventFlags | KEY_EVENT_FLAG_WOKE_HERE; + } + + mDispatcher->notifyKey(when, device->id, INPUT_EVENT_NATURE_KEY, policyFlags, + keyEventAction, keyEventFlags, keyCode, scanCode, + device->keyboard.current.metaState, + device->keyboard.current.downTime); +} + +void InputReader::onSwitch(nsecs_t when, InputDevice* device, bool down, + int32_t code) { + switch (code) { + case SW_LID: + mDispatcher->notifyLidSwitchChanged(when, ! down); + } +} + +void InputReader::onMultiTouchScreenStateChanged(nsecs_t when, + InputDevice* device) { + static const uint32_t REQUIRED_FIELDS = + InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_POSITION_X + | InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_POSITION_Y + | InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_TOUCH_MAJOR + | InputDevice::MultiTouchScreenState::Accumulator::FIELD_ABS_MT_WIDTH_MAJOR; + + /* Refresh display properties so we can map touch screen coords into display coords */ + + if (! refreshDisplayProperties()) { + return; + } + + /* Update device state */ + + InputDevice::MultiTouchScreenState* in = & device->multiTouchScreen; + InputDevice::TouchData* out = & device->touchScreen.currentTouch; + + uint32_t inCount = in->accumulator.pointerCount; + uint32_t outCount = 0; + bool havePointerIds = true; + + out->clear(); + + for (uint32_t inIndex = 0; inIndex < inCount; inIndex++) { + uint32_t fields = in->accumulator.pointers[inIndex].fields; + + if ((fields & REQUIRED_FIELDS) != REQUIRED_FIELDS) { +#if DEBUG_POINTERS + LOGD("Pointers: Missing required multitouch pointer fields: index=%d, fields=%d", + inIndex, fields); + continue; +#endif + } + + if (in->accumulator.pointers[inIndex].absMTTouchMajor <= 0) { + // Pointer is not down. Drop it. + continue; + } + + // FIXME assignment of pressure may be incorrect, probably better to let + // pressure = touch / width. Later on we pass width to MotionEvent as a size, which + // isn't quite right either. Should be using touch for that. + out->pointers[outCount].x = in->accumulator.pointers[inIndex].absMTPositionX; + out->pointers[outCount].y = in->accumulator.pointers[inIndex].absMTPositionY; + out->pointers[outCount].pressure = in->accumulator.pointers[inIndex].absMTTouchMajor; + out->pointers[outCount].size = in->accumulator.pointers[inIndex].absMTWidthMajor; + + if (havePointerIds) { + if (fields & InputDevice::MultiTouchScreenState::Accumulator:: + FIELD_ABS_MT_TRACKING_ID) { + uint32_t id = uint32_t(in->accumulator.pointers[inIndex].absMTTrackingId); + + if (id > MAX_POINTER_ID) { +#if DEBUG_POINTERS + LOGD("Pointers: Ignoring driver provided pointer id %d because " + "it is larger than max supported id %d for optimizations", + id, MAX_POINTER_ID); +#endif + havePointerIds = false; + } + else { + out->pointers[outCount].id = id; + out->idToIndex[id] = outCount; + out->idBits.markBit(id); + } + } else { + havePointerIds = false; + } + } + + outCount += 1; + } + + out->pointerCount = outCount; + + onTouchScreenChanged(when, device, havePointerIds); +} + +void InputReader::onSingleTouchScreenStateChanged(nsecs_t when, + InputDevice* device) { + static const uint32_t POSITION_FIELDS = + InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_X + | InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_Y + | InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_PRESSURE + | InputDevice::SingleTouchScreenState::Accumulator::FIELD_ABS_TOOL_WIDTH; + + /* Refresh display properties so we can map touch screen coords into display coords */ + + if (! refreshDisplayProperties()) { + return; + } + + /* Update device state */ + + InputDevice::SingleTouchScreenState* in = & device->singleTouchScreen; + InputDevice::TouchData* out = & device->touchScreen.currentTouch; + + uint32_t fields = in->accumulator.fields; + + if (fields & InputDevice::SingleTouchScreenState::Accumulator::FIELD_BTN_TOUCH) { + in->current.down = in->accumulator.btnTouch; + } + + if ((fields & POSITION_FIELDS) == POSITION_FIELDS) { + in->current.x = in->accumulator.absX; + in->current.y = in->accumulator.absY; + in->current.pressure = in->accumulator.absPressure; + in->current.size = in->accumulator.absToolWidth; + } + + out->clear(); + + if (in->current.down) { + out->pointerCount = 1; + out->pointers[0].id = 0; + out->pointers[0].x = in->current.x; + out->pointers[0].y = in->current.y; + out->pointers[0].pressure = in->current.pressure; + out->pointers[0].size = in->current.size; + out->idToIndex[0] = 0; + out->idBits.markBit(0); + } + + onTouchScreenChanged(when, device, true); +} + +void InputReader::onTouchScreenChanged(nsecs_t when, + InputDevice* device, bool havePointerIds) { + /* Apply policy */ + + int32_t policyActions = mPolicy->interceptTouch(when); + + uint32_t policyFlags = 0; + if (! applyStandardInputDispatchPolicyActions(when, policyActions, & policyFlags)) { + device->touchScreen.lastTouch.clear(); + return; // event dropped + } + + /* Preprocess pointer data */ + + if (device->touchScreen.parameters.useBadTouchFilter) { + if (device->touchScreen.applyBadTouchFilter()) { + havePointerIds = false; + } + } + + if (device->touchScreen.parameters.useJumpyTouchFilter) { + if (device->touchScreen.applyJumpyTouchFilter()) { + havePointerIds = false; + } + } + + if (! havePointerIds) { + device->touchScreen.calculatePointerIds(); + } + + InputDevice::TouchData temp; + InputDevice::TouchData* savedTouch; + if (device->touchScreen.parameters.useAveragingTouchFilter) { + temp.copyFrom(device->touchScreen.currentTouch); + savedTouch = & temp; + + device->touchScreen.applyAveragingTouchFilter(); + } else { + savedTouch = & device->touchScreen.currentTouch; + } + + /* Process virtual keys or touches */ + + if (! consumeVirtualKeyTouches(when, device, policyFlags)) { + dispatchTouches(when, device, policyFlags); + } + + // Copy current touch to last touch in preparation for the next cycle. + device->touchScreen.lastTouch.copyFrom(*savedTouch); +} + +bool InputReader::consumeVirtualKeyTouches(nsecs_t when, + InputDevice* device, uint32_t policyFlags) { + if (device->touchScreen.currentVirtualKey.down) { + if (device->touchScreen.currentTouch.pointerCount == 0) { + // Pointer went up while virtual key was down. Send key up event. + device->touchScreen.currentVirtualKey.down = false; + +#if DEBUG_VIRTUAL_KEYS + LOGD("VirtualKeys: Generating key up: keyCode=%d, scanCode=%d", + device->touchScreen.currentVirtualKey.keyCode, + device->touchScreen.currentVirtualKey.scanCode); +#endif + + dispatchVirtualKey(when, device, policyFlags, KEY_EVENT_ACTION_UP, + KEY_EVENT_FLAG_FROM_SYSTEM | KEY_EVENT_FLAG_VIRTUAL_HARD_KEY); + return true; // consumed + } + + int32_t x = device->touchScreen.currentTouch.pointers[0].x; + int32_t y = device->touchScreen.currentTouch.pointers[0].y; + if (device->touchScreen.isPointInsideDisplay(x, y)) { + // Pointer moved inside the display area. Send key cancellation. + device->touchScreen.currentVirtualKey.down = false; + +#if DEBUG_VIRTUAL_KEYS + LOGD("VirtualKeys: Canceling key: keyCode=%d, scanCode=%d", + device->touchScreen.currentVirtualKey.keyCode, + device->touchScreen.currentVirtualKey.scanCode); +#endif + + dispatchVirtualKey(when, device, policyFlags, KEY_EVENT_ACTION_UP, + KEY_EVENT_FLAG_FROM_SYSTEM | KEY_EVENT_FLAG_VIRTUAL_HARD_KEY + | KEY_EVENT_FLAG_CANCELED); + + // Clear the last touch data so we will consider the pointer as having just been + // pressed down when generating subsequent motion events. + device->touchScreen.lastTouch.clear(); + return false; // not consumed + } + } else if (device->touchScreen.currentTouch.pointerCount > 0 + && device->touchScreen.lastTouch.pointerCount == 0) { + int32_t x = device->touchScreen.currentTouch.pointers[0].x; + int32_t y = device->touchScreen.currentTouch.pointers[0].y; + for (size_t i = 0; i < device->touchScreen.virtualKeys.size(); i++) { + const InputDevice::VirtualKey& virtualKey = device->touchScreen.virtualKeys[i]; + +#if DEBUG_VIRTUAL_KEYS + LOGD("VirtualKeys: Hit test (%d, %d): keyCode=%d, scanCode=%d, " + "left=%d, top=%d, right=%d, bottom=%d", + x, y, + virtualKey.keyCode, virtualKey.scanCode, + virtualKey.hitLeft, virtualKey.hitTop, + virtualKey.hitRight, virtualKey.hitBottom); +#endif + + if (virtualKey.isHit(x, y)) { + device->touchScreen.currentVirtualKey.down = true; + device->touchScreen.currentVirtualKey.downTime = when; + device->touchScreen.currentVirtualKey.keyCode = virtualKey.keyCode; + device->touchScreen.currentVirtualKey.scanCode = virtualKey.scanCode; + +#if DEBUG_VIRTUAL_KEYS + LOGD("VirtualKeys: Generating key down: keyCode=%d, scanCode=%d", + device->touchScreen.currentVirtualKey.keyCode, + device->touchScreen.currentVirtualKey.scanCode); +#endif + + dispatchVirtualKey(when, device, policyFlags, KEY_EVENT_ACTION_DOWN, + KEY_EVENT_FLAG_FROM_SYSTEM | KEY_EVENT_FLAG_VIRTUAL_HARD_KEY); + return true; // consumed + } + } + } + + return false; // not consumed +} + +void InputReader::dispatchVirtualKey(nsecs_t when, + InputDevice* device, uint32_t policyFlags, + int32_t keyEventAction, int32_t keyEventFlags) { + int32_t keyCode = device->touchScreen.currentVirtualKey.keyCode; + int32_t scanCode = device->touchScreen.currentVirtualKey.scanCode; + nsecs_t downTime = device->touchScreen.currentVirtualKey.downTime; + int32_t metaState = globalMetaState(); + + updateGlobalVirtualKeyState(); + + mPolicy->virtualKeyFeedback(when, device->id, keyEventAction, keyEventFlags, + keyCode, scanCode, metaState, downTime); + + mDispatcher->notifyKey(when, device->id, INPUT_EVENT_NATURE_KEY, policyFlags, + keyEventAction, keyEventFlags, keyCode, scanCode, metaState, downTime); +} + +void InputReader::dispatchTouches(nsecs_t when, + InputDevice* device, uint32_t policyFlags) { + uint32_t currentPointerCount = device->touchScreen.currentTouch.pointerCount; + uint32_t lastPointerCount = device->touchScreen.lastTouch.pointerCount; + if (currentPointerCount == 0 && lastPointerCount == 0) { + return; // nothing to do! + } + + BitSet32 currentIdBits = device->touchScreen.currentTouch.idBits; + BitSet32 lastIdBits = device->touchScreen.lastTouch.idBits; + + if (currentIdBits == lastIdBits) { + // No pointer id changes so this is a move event. + // The dispatcher takes care of batching moves so we don't have to deal with that here. + int32_t motionEventAction = MOTION_EVENT_ACTION_MOVE; + dispatchTouch(when, device, policyFlags, & device->touchScreen.currentTouch, + currentIdBits, motionEventAction); + } else { + // There may be pointers going up and pointers going down at the same time when pointer + // ids are reported by the device driver. + BitSet32 upIdBits(lastIdBits.value & ~ currentIdBits.value); + BitSet32 downIdBits(currentIdBits.value & ~ lastIdBits.value); + BitSet32 activeIdBits(lastIdBits.value); + + while (! upIdBits.isEmpty()) { + uint32_t upId = upIdBits.firstMarkedBit(); + upIdBits.clearBit(upId); + BitSet32 oldActiveIdBits = activeIdBits; + activeIdBits.clearBit(upId); + + int32_t motionEventAction; + if (activeIdBits.isEmpty()) { + motionEventAction = MOTION_EVENT_ACTION_UP; + } else { + motionEventAction = MOTION_EVENT_ACTION_POINTER_UP + | (upId << MOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); + } + + dispatchTouch(when, device, policyFlags, & device->touchScreen.lastTouch, + oldActiveIdBits, motionEventAction); + } + + while (! downIdBits.isEmpty()) { + uint32_t downId = downIdBits.firstMarkedBit(); + downIdBits.clearBit(downId); + BitSet32 oldActiveIdBits = activeIdBits; + activeIdBits.markBit(downId); + + int32_t motionEventAction; + if (oldActiveIdBits.isEmpty()) { + motionEventAction = MOTION_EVENT_ACTION_DOWN; + device->touchScreen.downTime = when; + } else { + motionEventAction = MOTION_EVENT_ACTION_POINTER_DOWN + | (downId << MOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); + } + + dispatchTouch(when, device, policyFlags, & device->touchScreen.currentTouch, + activeIdBits, motionEventAction); + } + } +} + +void InputReader::dispatchTouch(nsecs_t when, InputDevice* device, uint32_t policyFlags, + InputDevice::TouchData* touch, BitSet32 idBits, + int32_t motionEventAction) { + int32_t orientedWidth, orientedHeight; + switch (mDisplayOrientation) { + case InputDispatchPolicyInterface::ROTATION_90: + case InputDispatchPolicyInterface::ROTATION_270: + orientedWidth = mDisplayHeight; + orientedHeight = mDisplayWidth; + break; + default: + orientedWidth = mDisplayWidth; + orientedHeight = mDisplayHeight; + break; + } + + uint32_t pointerCount = 0; + int32_t pointerIds[MAX_POINTERS]; + PointerCoords pointerCoords[MAX_POINTERS]; + + // Walk through the the active pointers and map touch screen coordinates (TouchData) into + // display coordinates (PointerCoords) and adjust for display orientation. + while (! idBits.isEmpty()) { + uint32_t id = idBits.firstMarkedBit(); + idBits.clearBit(id); + uint32_t index = touch->idToIndex[id]; + + float x = (float(touch->pointers[index].x) + - device->touchScreen.parameters.xAxis.minValue) + * device->touchScreen.precalculated.xScale; + float y = (float(touch->pointers[index].y) + - device->touchScreen.parameters.yAxis.minValue) + * device->touchScreen.precalculated.yScale; + float pressure = (float(touch->pointers[index].pressure) + - device->touchScreen.parameters.pressureAxis.minValue) + * device->touchScreen.precalculated.pressureScale; + float size = (float(touch->pointers[index].size) + - device->touchScreen.parameters.sizeAxis.minValue) + * device->touchScreen.precalculated.sizeScale; + + switch (mDisplayOrientation) { + case InputDispatchPolicyInterface::ROTATION_90: { + float xTemp = x; + x = y; + y = mDisplayHeight - xTemp; + break; + } + case InputDispatchPolicyInterface::ROTATION_180: { + x = mDisplayWidth - x; + y = mDisplayHeight - y; + break; + } + case InputDispatchPolicyInterface::ROTATION_270: { + float xTemp = x; + x = mDisplayWidth - y; + y = xTemp; + break; + } + } + + pointerIds[pointerCount] = int32_t(id); + + pointerCoords[pointerCount].x = x; + pointerCoords[pointerCount].y = y; + pointerCoords[pointerCount].pressure = pressure; + pointerCoords[pointerCount].size = size; + + pointerCount += 1; + } + + // Check edge flags by looking only at the first pointer since the flags are + // global to the event. + // XXX Maybe we should revise the edge flags API to work on a per-pointer basis. + int32_t motionEventEdgeFlags = 0; + if (motionEventAction == MOTION_EVENT_ACTION_DOWN) { + if (pointerCoords[0].x <= 0) { + motionEventEdgeFlags |= MOTION_EVENT_EDGE_FLAG_LEFT; + } else if (pointerCoords[0].x >= orientedWidth) { + motionEventEdgeFlags |= MOTION_EVENT_EDGE_FLAG_RIGHT; + } + if (pointerCoords[0].y <= 0) { + motionEventEdgeFlags |= MOTION_EVENT_EDGE_FLAG_TOP; + } else if (pointerCoords[0].y >= orientedHeight) { + motionEventEdgeFlags |= MOTION_EVENT_EDGE_FLAG_BOTTOM; + } + } + + nsecs_t downTime = device->touchScreen.downTime; + mDispatcher->notifyMotion(when, device->id, INPUT_EVENT_NATURE_TOUCH, policyFlags, + motionEventAction, globalMetaState(), motionEventEdgeFlags, + pointerCount, pointerIds, pointerCoords, + 0, 0, downTime); +} + +void InputReader::onTrackballStateChanged(nsecs_t when, + InputDevice* device) { + static const uint32_t DELTA_FIELDS = + InputDevice::TrackballState::Accumulator::FIELD_REL_X + | InputDevice::TrackballState::Accumulator::FIELD_REL_Y; + + /* Refresh display properties so we can trackball moves according to display orientation */ + + if (! refreshDisplayProperties()) { + return; + } + + /* Update device state */ + + uint32_t fields = device->trackball.accumulator.fields; + bool downChanged = fields & InputDevice::TrackballState::Accumulator::FIELD_BTN_MOUSE; + bool deltaChanged = (fields & DELTA_FIELDS) == DELTA_FIELDS; + + bool down; + if (downChanged) { + if (device->trackball.accumulator.btnMouse) { + device->trackball.current.down = true; + device->trackball.current.downTime = when; + down = true; + } else { + device->trackball.current.down = false; + down = false; + } + } else { + down = device->trackball.current.down; + } + + /* Apply policy */ + + int32_t policyActions = mPolicy->interceptTrackball(when, downChanged, down, deltaChanged); + + uint32_t policyFlags = 0; + if (! applyStandardInputDispatchPolicyActions(when, policyActions, & policyFlags)) { + return; // event dropped + } + + /* Enqueue motion event for dispatch */ + + int32_t motionEventAction; + if (downChanged) { + motionEventAction = down ? MOTION_EVENT_ACTION_DOWN : MOTION_EVENT_ACTION_UP; + } else { + motionEventAction = MOTION_EVENT_ACTION_MOVE; + } + + int32_t pointerId = 0; + PointerCoords pointerCoords; + pointerCoords.x = device->trackball.accumulator.relX + * device->trackball.precalculated.xScale; + pointerCoords.y = device->trackball.accumulator.relY + * device->trackball.precalculated.yScale; + pointerCoords.pressure = 1.0f; // XXX Consider making this 1.0f if down, 0 otherwise. + pointerCoords.size = 0; + + float temp; + switch (mDisplayOrientation) { + case InputDispatchPolicyInterface::ROTATION_90: + temp = pointerCoords.x; + pointerCoords.x = pointerCoords.y; + pointerCoords.y = - temp; + break; + + case InputDispatchPolicyInterface::ROTATION_180: + pointerCoords.x = - pointerCoords.x; + pointerCoords.y = - pointerCoords.y; + break; + + case InputDispatchPolicyInterface::ROTATION_270: + temp = pointerCoords.x; + pointerCoords.x = - pointerCoords.y; + pointerCoords.y = temp; + break; + } + + mDispatcher->notifyMotion(when, device->id, INPUT_EVENT_NATURE_TRACKBALL, policyFlags, + motionEventAction, globalMetaState(), MOTION_EVENT_EDGE_FLAG_NONE, + 1, & pointerId, & pointerCoords, + device->trackball.precalculated.xPrecision, + device->trackball.precalculated.yPrecision, + device->trackball.current.downTime); +} + +void InputReader::onConfigurationChanged(nsecs_t when) { + // Reset global meta state because it depends on the list of all configured devices. + resetGlobalMetaState(); + + // Reset virtual keys, just in case. + updateGlobalVirtualKeyState(); + + // Enqueue configuration changed. + // XXX This stuff probably needs to be tracked elsewhere in an input device registry + // of some kind that can be asynchronously updated and queried. (Same as above?) + int32_t touchScreenConfig = InputDispatchPolicyInterface::TOUCHSCREEN_NOTOUCH; + int32_t keyboardConfig = InputDispatchPolicyInterface::KEYBOARD_NOKEYS; + int32_t navigationConfig = InputDispatchPolicyInterface::NAVIGATION_NONAV; + + for (size_t i = 0; i < mDevices.size(); i++) { + InputDevice* device = mDevices.valueAt(i); + int32_t deviceClasses = device->classes; + + if (deviceClasses & INPUT_DEVICE_CLASS_TOUCHSCREEN) { + touchScreenConfig = InputDispatchPolicyInterface::TOUCHSCREEN_FINGER; + } + if (deviceClasses & INPUT_DEVICE_CLASS_ALPHAKEY) { + keyboardConfig = InputDispatchPolicyInterface::KEYBOARD_QWERTY; + } + if (deviceClasses & INPUT_DEVICE_CLASS_TRACKBALL) { + navigationConfig = InputDispatchPolicyInterface::NAVIGATION_TRACKBALL; + } else if (deviceClasses & INPUT_DEVICE_CLASS_DPAD) { + navigationConfig = InputDispatchPolicyInterface::NAVIGATION_DPAD; + } + } + + mDispatcher->notifyConfigurationChanged(when, touchScreenConfig, + keyboardConfig, navigationConfig); +} + +bool InputReader::applyStandardInputDispatchPolicyActions(nsecs_t when, + int32_t policyActions, uint32_t* policyFlags) { + if (policyActions & InputDispatchPolicyInterface::ACTION_APP_SWITCH_COMING) { + mDispatcher->notifyAppSwitchComing(when); + } + + if (policyActions & InputDispatchPolicyInterface::ACTION_WOKE_HERE) { + *policyFlags |= POLICY_FLAG_WOKE_HERE; + } + + if (policyActions & InputDispatchPolicyInterface::ACTION_BRIGHT_HERE) { + *policyFlags |= POLICY_FLAG_BRIGHT_HERE; + } + + return policyActions & InputDispatchPolicyInterface::ACTION_DISPATCH; +} + +void InputReader::resetDisplayProperties() { + mDisplayWidth = mDisplayHeight = -1; + mDisplayOrientation = -1; +} + +bool InputReader::refreshDisplayProperties() { + int32_t newWidth, newHeight, newOrientation; + if (mPolicy->getDisplayInfo(0, & newWidth, & newHeight, & newOrientation)) { + if (newWidth != mDisplayWidth || newHeight != mDisplayHeight) { + LOGD("Display size changed from %dx%d to %dx%d, updating device configuration", + mDisplayWidth, mDisplayHeight, newWidth, newHeight); + + mDisplayWidth = newWidth; + mDisplayHeight = newHeight; + + for (size_t i = 0; i < mDevices.size(); i++) { + configureDeviceForCurrentDisplaySize(mDevices.valueAt(i)); + } + } + + mDisplayOrientation = newOrientation; + return true; + } else { + resetDisplayProperties(); + return false; + } +} + +InputDevice* InputReader::getDevice(int32_t deviceId) { + ssize_t index = mDevices.indexOfKey(deviceId); + return index >= 0 ? mDevices.valueAt((size_t) index) : NULL; +} + +InputDevice* InputReader::getNonIgnoredDevice(int32_t deviceId) { + InputDevice* device = getDevice(deviceId); + return device && ! device->ignored ? device : NULL; +} + +void InputReader::addDevice(nsecs_t when, int32_t deviceId) { + uint32_t classes = mEventHub->getDeviceClasses(deviceId); + String8 name = mEventHub->getDeviceName(deviceId); + InputDevice* device = new InputDevice(deviceId, classes, name); + + if (classes != 0) { + LOGI("Device added: id=0x%x, name=%s, classes=%02x", device->id, + device->name.string(), device->classes); + + configureDevice(device); + } else { + LOGI("Device added: id=0x%x, name=%s (ignored non-input device)", device->id, + device->name.string()); + + device->ignored = true; + } + + device->reset(); + + mDevices.add(deviceId, device); + + if (! device->ignored) { + onConfigurationChanged(when); + } +} + +void InputReader::removeDevice(nsecs_t when, InputDevice* device) { + mDevices.removeItem(device->id); + + if (! device->ignored) { + LOGI("Device removed: id=0x%x, name=%s, classes=%02x", device->id, + device->name.string(), device->classes); + + onConfigurationChanged(when); + } else { + LOGI("Device removed: id=0x%x, name=%s (ignored non-input device)", device->id, + device->name.string()); + } + + delete device; +} + +void InputReader::configureDevice(InputDevice* device) { + if (device->isMultiTouchScreen()) { + configureAbsoluteAxisInfo(device, ABS_MT_POSITION_X, "X", + & device->touchScreen.parameters.xAxis); + configureAbsoluteAxisInfo(device, ABS_MT_POSITION_Y, "Y", + & device->touchScreen.parameters.yAxis); + configureAbsoluteAxisInfo(device, ABS_MT_TOUCH_MAJOR, "Pressure", + & device->touchScreen.parameters.pressureAxis); + configureAbsoluteAxisInfo(device, ABS_MT_WIDTH_MAJOR, "Size", + & device->touchScreen.parameters.sizeAxis); + } else if (device->isSingleTouchScreen()) { + configureAbsoluteAxisInfo(device, ABS_X, "X", + & device->touchScreen.parameters.xAxis); + configureAbsoluteAxisInfo(device, ABS_Y, "Y", + & device->touchScreen.parameters.yAxis); + configureAbsoluteAxisInfo(device, ABS_PRESSURE, "Pressure", + & device->touchScreen.parameters.pressureAxis); + configureAbsoluteAxisInfo(device, ABS_TOOL_WIDTH, "Size", + & device->touchScreen.parameters.sizeAxis); + } + + if (device->isTouchScreen()) { + device->touchScreen.parameters.useBadTouchFilter = + mPolicy->filterTouchEvents(); + device->touchScreen.parameters.useAveragingTouchFilter = + mPolicy->filterTouchEvents(); + device->touchScreen.parameters.useJumpyTouchFilter = + mPolicy->filterJumpyTouchEvents(); + + device->touchScreen.precalculated.pressureScale = + 1.0f / device->touchScreen.parameters.pressureAxis.range; + device->touchScreen.precalculated.sizeScale = + 1.0f / device->touchScreen.parameters.sizeAxis.range; + } + + if (device->isTrackball()) { + device->trackball.precalculated.xPrecision = TRACKBALL_MOVEMENT_THRESHOLD; + device->trackball.precalculated.yPrecision = TRACKBALL_MOVEMENT_THRESHOLD; + device->trackball.precalculated.xScale = 1.0f / TRACKBALL_MOVEMENT_THRESHOLD; + device->trackball.precalculated.yScale = 1.0f / TRACKBALL_MOVEMENT_THRESHOLD; + } + + configureDeviceForCurrentDisplaySize(device); +} + +void InputReader::configureDeviceForCurrentDisplaySize(InputDevice* device) { + if (device->isTouchScreen()) { + if (mDisplayWidth < 0) { + LOGD("Skipping part of touch screen configuration since display size is unknown."); + } else { + LOGI("Device configured: id=0x%x, name=%s (display size was changed)", device->id, + device->name.string()); + configureVirtualKeys(device); + + device->touchScreen.precalculated.xScale = + float(mDisplayWidth) / device->touchScreen.parameters.xAxis.range; + device->touchScreen.precalculated.yScale = + float(mDisplayHeight) / device->touchScreen.parameters.yAxis.range; + } + } +} + +void InputReader::configureVirtualKeys(InputDevice* device) { + device->touchScreen.virtualKeys.clear(); + + Vector<InputDispatchPolicyInterface::VirtualKeyDefinition> virtualKeyDefinitions; + mPolicy->getVirtualKeyDefinitions(device->name, virtualKeyDefinitions); + if (virtualKeyDefinitions.size() == 0) { + return; + } + + device->touchScreen.virtualKeys.setCapacity(virtualKeyDefinitions.size()); + + int32_t touchScreenLeft = device->touchScreen.parameters.xAxis.minValue; + int32_t touchScreenTop = device->touchScreen.parameters.yAxis.minValue; + int32_t touchScreenWidth = device->touchScreen.parameters.xAxis.range; + int32_t touchScreenHeight = device->touchScreen.parameters.yAxis.range; + + for (size_t i = 0; i < virtualKeyDefinitions.size(); i++) { + const InputDispatchPolicyInterface::VirtualKeyDefinition& virtualKeyDefinition = + virtualKeyDefinitions[i]; + + device->touchScreen.virtualKeys.add(); + InputDevice::VirtualKey& virtualKey = + device->touchScreen.virtualKeys.editTop(); + + virtualKey.scanCode = virtualKeyDefinition.scanCode; + int32_t keyCode; + uint32_t flags; + if (mEventHub->scancodeToKeycode(device->id, virtualKey.scanCode, + & keyCode, & flags)) { + LOGI(" VirtualKey %d: could not obtain key code, ignoring", virtualKey.scanCode); + device->touchScreen.virtualKeys.pop(); // drop the key + continue; + } + + virtualKey.keyCode = keyCode; + virtualKey.flags = flags; + + // convert the key definition's display coordinates into touch coordinates for a hit box + int32_t halfWidth = virtualKeyDefinition.width / 2; + int32_t halfHeight = virtualKeyDefinition.height / 2; + + virtualKey.hitLeft = (virtualKeyDefinition.centerX - halfWidth) + * touchScreenWidth / mDisplayWidth + touchScreenLeft; + virtualKey.hitRight= (virtualKeyDefinition.centerX + halfWidth) + * touchScreenWidth / mDisplayWidth + touchScreenLeft; + virtualKey.hitTop = (virtualKeyDefinition.centerY - halfHeight) + * touchScreenHeight / mDisplayHeight + touchScreenTop; + virtualKey.hitBottom = (virtualKeyDefinition.centerY + halfHeight) + * touchScreenHeight / mDisplayHeight + touchScreenTop; + + LOGI(" VirtualKey %d: keyCode=%d hitLeft=%d hitRight=%d hitTop=%d hitBottom=%d", + virtualKey.scanCode, virtualKey.keyCode, + virtualKey.hitLeft, virtualKey.hitRight, virtualKey.hitTop, virtualKey.hitBottom); + } +} + +void InputReader::configureAbsoluteAxisInfo(InputDevice* device, + int axis, const char* name, InputDevice::AbsoluteAxisInfo* out) { + if (! mEventHub->getAbsoluteInfo(device->id, axis, + & out->minValue, & out->maxValue, & out->flat, &out->fuzz)) { + out->range = out->maxValue - out->minValue; + if (out->range != 0) { + LOGI(" %s: min=%d max=%d flat=%d fuzz=%d", + name, out->minValue, out->maxValue, out->flat, out->fuzz); + return; + } + } + + out->minValue = 0; + out->maxValue = 0; + out->flat = 0; + out->fuzz = 0; + out->range = 0; + LOGI(" %s: unknown axis values, setting to zero", name); +} + +void InputReader::resetGlobalMetaState() { + mGlobalMetaState = -1; +} + +int32_t InputReader::globalMetaState() { + if (mGlobalMetaState == -1) { + mGlobalMetaState = 0; + for (size_t i = 0; i < mDevices.size(); i++) { + InputDevice* device = mDevices.valueAt(i); + if (device->isKeyboard()) { + mGlobalMetaState |= device->keyboard.current.metaState; + } + } + } + return mGlobalMetaState; +} + +void InputReader::updateGlobalVirtualKeyState() { + int32_t keyCode = -1, scanCode = -1; + + for (size_t i = 0; i < mDevices.size(); i++) { + InputDevice* device = mDevices.valueAt(i); + if (device->isTouchScreen()) { + if (device->touchScreen.currentVirtualKey.down) { + keyCode = device->touchScreen.currentVirtualKey.keyCode; + scanCode = device->touchScreen.currentVirtualKey.scanCode; + } + } + } + + { + AutoMutex _l(mExportedStateLock); + + mGlobalVirtualKeyCode = keyCode; + mGlobalVirtualScanCode = scanCode; + } +} + +bool InputReader::getCurrentVirtualKey(int32_t* outKeyCode, int32_t* outScanCode) const { + AutoMutex _l(mExportedStateLock); + + *outKeyCode = mGlobalVirtualKeyCode; + *outScanCode = mGlobalVirtualScanCode; + return mGlobalVirtualKeyCode != -1; +} + + +// --- InputReaderThread --- + +InputReaderThread::InputReaderThread(const sp<InputReaderInterface>& reader) : + Thread(/*canCallJava*/ true), mReader(reader) { +} + +InputReaderThread::~InputReaderThread() { +} + +bool InputReaderThread::threadLoop() { + mReader->loopOnce(); + return true; +} + +} // namespace android |