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Diffstat (limited to 'libs/input/PointerController.cpp')
| -rw-r--r-- | libs/input/PointerController.cpp | 604 |
1 files changed, 604 insertions, 0 deletions
diff --git a/libs/input/PointerController.cpp b/libs/input/PointerController.cpp new file mode 100644 index 0000000..9af521b --- /dev/null +++ b/libs/input/PointerController.cpp @@ -0,0 +1,604 @@ +/* + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define LOG_TAG "PointerController" + +//#define LOG_NDEBUG 0 + +// Log debug messages about pointer updates +#define DEBUG_POINTER_UPDATES 0 + +#include "PointerController.h" + +#include <cutils/log.h> + +#include <SkBitmap.h> +#include <SkCanvas.h> +#include <SkColor.h> +#include <SkPaint.h> +#include <SkXfermode.h> + +namespace android { + +// --- PointerController --- + +// Time to wait before starting the fade when the pointer is inactive. +static const nsecs_t INACTIVITY_TIMEOUT_DELAY_TIME_NORMAL = 15 * 1000 * 1000000LL; // 15 seconds +static const nsecs_t INACTIVITY_TIMEOUT_DELAY_TIME_SHORT = 3 * 1000 * 1000000LL; // 3 seconds + +// Time to wait between animation frames. +static const nsecs_t ANIMATION_FRAME_INTERVAL = 1000000000LL / 60; + +// Time to spend fading out the spot completely. +static const nsecs_t SPOT_FADE_DURATION = 200 * 1000000LL; // 200 ms + +// Time to spend fading out the pointer completely. +static const nsecs_t POINTER_FADE_DURATION = 500 * 1000000LL; // 500 ms + + +// --- PointerController --- + +PointerController::PointerController(const sp<PointerControllerPolicyInterface>& policy, + const sp<Looper>& looper, const sp<SpriteController>& spriteController) : + mPolicy(policy), mLooper(looper), mSpriteController(spriteController) { + mHandler = new WeakMessageHandler(this); + + AutoMutex _l(mLock); + + mLocked.animationPending = false; + + mLocked.displayWidth = -1; + mLocked.displayHeight = -1; + mLocked.displayOrientation = DISPLAY_ORIENTATION_0; + + mLocked.presentation = PRESENTATION_POINTER; + mLocked.presentationChanged = false; + + mLocked.inactivityTimeout = INACTIVITY_TIMEOUT_NORMAL; + + mLocked.pointerFadeDirection = 0; + mLocked.pointerX = 0; + mLocked.pointerY = 0; + mLocked.pointerAlpha = 0.0f; // pointer is initially faded + mLocked.pointerSprite = mSpriteController->createSprite(); + mLocked.pointerIconChanged = false; + + mLocked.buttonState = 0; + + loadResources(); +} + +PointerController::~PointerController() { + mLooper->removeMessages(mHandler); + + AutoMutex _l(mLock); + + mLocked.pointerSprite.clear(); + + for (size_t i = 0; i < mLocked.spots.size(); i++) { + delete mLocked.spots.itemAt(i); + } + mLocked.spots.clear(); + mLocked.recycledSprites.clear(); +} + +bool PointerController::getBounds(float* outMinX, float* outMinY, + float* outMaxX, float* outMaxY) const { + AutoMutex _l(mLock); + + return getBoundsLocked(outMinX, outMinY, outMaxX, outMaxY); +} + +bool PointerController::getBoundsLocked(float* outMinX, float* outMinY, + float* outMaxX, float* outMaxY) const { + if (mLocked.displayWidth <= 0 || mLocked.displayHeight <= 0) { + return false; + } + + *outMinX = 0; + *outMinY = 0; + switch (mLocked.displayOrientation) { + case DISPLAY_ORIENTATION_90: + case DISPLAY_ORIENTATION_270: + *outMaxX = mLocked.displayHeight - 1; + *outMaxY = mLocked.displayWidth - 1; + break; + default: + *outMaxX = mLocked.displayWidth - 1; + *outMaxY = mLocked.displayHeight - 1; + break; + } + return true; +} + +void PointerController::move(float deltaX, float deltaY) { +#if DEBUG_POINTER_UPDATES + ALOGD("Move pointer by deltaX=%0.3f, deltaY=%0.3f", deltaX, deltaY); +#endif + if (deltaX == 0.0f && deltaY == 0.0f) { + return; + } + + AutoMutex _l(mLock); + + setPositionLocked(mLocked.pointerX + deltaX, mLocked.pointerY + deltaY); +} + +void PointerController::setButtonState(int32_t buttonState) { +#if DEBUG_POINTER_UPDATES + ALOGD("Set button state 0x%08x", buttonState); +#endif + AutoMutex _l(mLock); + + if (mLocked.buttonState != buttonState) { + mLocked.buttonState = buttonState; + } +} + +int32_t PointerController::getButtonState() const { + AutoMutex _l(mLock); + + return mLocked.buttonState; +} + +void PointerController::setPosition(float x, float y) { +#if DEBUG_POINTER_UPDATES + ALOGD("Set pointer position to x=%0.3f, y=%0.3f", x, y); +#endif + AutoMutex _l(mLock); + + setPositionLocked(x, y); +} + +void PointerController::setPositionLocked(float x, float y) { + float minX, minY, maxX, maxY; + if (getBoundsLocked(&minX, &minY, &maxX, &maxY)) { + if (x <= minX) { + mLocked.pointerX = minX; + } else if (x >= maxX) { + mLocked.pointerX = maxX; + } else { + mLocked.pointerX = x; + } + if (y <= minY) { + mLocked.pointerY = minY; + } else if (y >= maxY) { + mLocked.pointerY = maxY; + } else { + mLocked.pointerY = y; + } + updatePointerLocked(); + } +} + +void PointerController::getPosition(float* outX, float* outY) const { + AutoMutex _l(mLock); + + *outX = mLocked.pointerX; + *outY = mLocked.pointerY; +} + +void PointerController::fade(Transition transition) { + AutoMutex _l(mLock); + + // Remove the inactivity timeout, since we are fading now. + removeInactivityTimeoutLocked(); + + // Start fading. + if (transition == TRANSITION_IMMEDIATE) { + mLocked.pointerFadeDirection = 0; + mLocked.pointerAlpha = 0.0f; + updatePointerLocked(); + } else { + mLocked.pointerFadeDirection = -1; + startAnimationLocked(); + } +} + +void PointerController::unfade(Transition transition) { + AutoMutex _l(mLock); + + // Always reset the inactivity timer. + resetInactivityTimeoutLocked(); + + // Start unfading. + if (transition == TRANSITION_IMMEDIATE) { + mLocked.pointerFadeDirection = 0; + mLocked.pointerAlpha = 1.0f; + updatePointerLocked(); + } else { + mLocked.pointerFadeDirection = 1; + startAnimationLocked(); + } +} + +void PointerController::setPresentation(Presentation presentation) { + AutoMutex _l(mLock); + + if (mLocked.presentation != presentation) { + mLocked.presentation = presentation; + mLocked.presentationChanged = true; + + if (presentation != PRESENTATION_SPOT) { + fadeOutAndReleaseAllSpotsLocked(); + } + + updatePointerLocked(); + } +} + +void PointerController::setSpots(const PointerCoords* spotCoords, + const uint32_t* spotIdToIndex, BitSet32 spotIdBits) { +#if DEBUG_POINTER_UPDATES + ALOGD("setSpots: idBits=%08x", spotIdBits.value); + for (BitSet32 idBits(spotIdBits); !idBits.isEmpty(); ) { + uint32_t id = idBits.firstMarkedBit(); + idBits.clearBit(id); + const PointerCoords& c = spotCoords[spotIdToIndex[id]]; + ALOGD(" spot %d: position=(%0.3f, %0.3f), pressure=%0.3f", id, + c.getAxisValue(AMOTION_EVENT_AXIS_X), + c.getAxisValue(AMOTION_EVENT_AXIS_Y), + c.getAxisValue(AMOTION_EVENT_AXIS_PRESSURE)); + } +#endif + + AutoMutex _l(mLock); + + mSpriteController->openTransaction(); + + // Add or move spots for fingers that are down. + for (BitSet32 idBits(spotIdBits); !idBits.isEmpty(); ) { + uint32_t id = idBits.clearFirstMarkedBit(); + const PointerCoords& c = spotCoords[spotIdToIndex[id]]; + const SpriteIcon& icon = c.getAxisValue(AMOTION_EVENT_AXIS_PRESSURE) > 0 + ? mResources.spotTouch : mResources.spotHover; + float x = c.getAxisValue(AMOTION_EVENT_AXIS_X); + float y = c.getAxisValue(AMOTION_EVENT_AXIS_Y); + + Spot* spot = getSpotLocked(id); + if (!spot) { + spot = createAndAddSpotLocked(id); + } + + spot->updateSprite(&icon, x, y); + } + + // Remove spots for fingers that went up. + for (size_t i = 0; i < mLocked.spots.size(); i++) { + Spot* spot = mLocked.spots.itemAt(i); + if (spot->id != Spot::INVALID_ID + && !spotIdBits.hasBit(spot->id)) { + fadeOutAndReleaseSpotLocked(spot); + } + } + + mSpriteController->closeTransaction(); +} + +void PointerController::clearSpots() { +#if DEBUG_POINTER_UPDATES + ALOGD("clearSpots"); +#endif + + AutoMutex _l(mLock); + + fadeOutAndReleaseAllSpotsLocked(); +} + +void PointerController::setInactivityTimeout(InactivityTimeout inactivityTimeout) { + AutoMutex _l(mLock); + + if (mLocked.inactivityTimeout != inactivityTimeout) { + mLocked.inactivityTimeout = inactivityTimeout; + resetInactivityTimeoutLocked(); + } +} + +void PointerController::setDisplayViewport(int32_t width, int32_t height, int32_t orientation) { + AutoMutex _l(mLock); + + // Adjust to use the display's unrotated coordinate frame. + if (orientation == DISPLAY_ORIENTATION_90 + || orientation == DISPLAY_ORIENTATION_270) { + int32_t temp = height; + height = width; + width = temp; + } + + if (mLocked.displayWidth != width || mLocked.displayHeight != height) { + mLocked.displayWidth = width; + mLocked.displayHeight = height; + + float minX, minY, maxX, maxY; + if (getBoundsLocked(&minX, &minY, &maxX, &maxY)) { + mLocked.pointerX = (minX + maxX) * 0.5f; + mLocked.pointerY = (minY + maxY) * 0.5f; + } else { + mLocked.pointerX = 0; + mLocked.pointerY = 0; + } + + fadeOutAndReleaseAllSpotsLocked(); + } + + if (mLocked.displayOrientation != orientation) { + // Apply offsets to convert from the pixel top-left corner position to the pixel center. + // This creates an invariant frame of reference that we can easily rotate when + // taking into account that the pointer may be located at fractional pixel offsets. + float x = mLocked.pointerX + 0.5f; + float y = mLocked.pointerY + 0.5f; + float temp; + + // Undo the previous rotation. + switch (mLocked.displayOrientation) { + case DISPLAY_ORIENTATION_90: + temp = x; + x = mLocked.displayWidth - y; + y = temp; + break; + case DISPLAY_ORIENTATION_180: + x = mLocked.displayWidth - x; + y = mLocked.displayHeight - y; + break; + case DISPLAY_ORIENTATION_270: + temp = x; + x = y; + y = mLocked.displayHeight - temp; + break; + } + + // Perform the new rotation. + switch (orientation) { + case DISPLAY_ORIENTATION_90: + temp = x; + x = y; + y = mLocked.displayWidth - temp; + break; + case DISPLAY_ORIENTATION_180: + x = mLocked.displayWidth - x; + y = mLocked.displayHeight - y; + break; + case DISPLAY_ORIENTATION_270: + temp = x; + x = mLocked.displayHeight - y; + y = temp; + break; + } + + // Apply offsets to convert from the pixel center to the pixel top-left corner position + // and save the results. + mLocked.pointerX = x - 0.5f; + mLocked.pointerY = y - 0.5f; + mLocked.displayOrientation = orientation; + } + + updatePointerLocked(); +} + +void PointerController::setPointerIcon(const SpriteIcon& icon) { + AutoMutex _l(mLock); + + mLocked.pointerIcon = icon.copy(); + mLocked.pointerIconChanged = true; + + updatePointerLocked(); +} + +void PointerController::handleMessage(const Message& message) { + switch (message.what) { + case MSG_ANIMATE: + doAnimate(); + break; + case MSG_INACTIVITY_TIMEOUT: + doInactivityTimeout(); + break; + } +} + +void PointerController::doAnimate() { + AutoMutex _l(mLock); + + bool keepAnimating = false; + mLocked.animationPending = false; + nsecs_t frameDelay = systemTime(SYSTEM_TIME_MONOTONIC) - mLocked.animationTime; + + // Animate pointer fade. + if (mLocked.pointerFadeDirection < 0) { + mLocked.pointerAlpha -= float(frameDelay) / POINTER_FADE_DURATION; + if (mLocked.pointerAlpha <= 0.0f) { + mLocked.pointerAlpha = 0.0f; + mLocked.pointerFadeDirection = 0; + } else { + keepAnimating = true; + } + updatePointerLocked(); + } else if (mLocked.pointerFadeDirection > 0) { + mLocked.pointerAlpha += float(frameDelay) / POINTER_FADE_DURATION; + if (mLocked.pointerAlpha >= 1.0f) { + mLocked.pointerAlpha = 1.0f; + mLocked.pointerFadeDirection = 0; + } else { + keepAnimating = true; + } + updatePointerLocked(); + } + + // Animate spots that are fading out and being removed. + for (size_t i = 0; i < mLocked.spots.size(); i++) { + Spot* spot = mLocked.spots.itemAt(i); + if (spot->id == Spot::INVALID_ID) { + spot->alpha -= float(frameDelay) / SPOT_FADE_DURATION; + if (spot->alpha <= 0) { + mLocked.spots.removeAt(i--); + releaseSpotLocked(spot); + } else { + spot->sprite->setAlpha(spot->alpha); + keepAnimating = true; + } + } + } + + if (keepAnimating) { + startAnimationLocked(); + } +} + +void PointerController::doInactivityTimeout() { + fade(TRANSITION_GRADUAL); +} + +void PointerController::startAnimationLocked() { + if (!mLocked.animationPending) { + mLocked.animationPending = true; + mLocked.animationTime = systemTime(SYSTEM_TIME_MONOTONIC); + mLooper->sendMessageDelayed(ANIMATION_FRAME_INTERVAL, mHandler, Message(MSG_ANIMATE)); + } +} + +void PointerController::resetInactivityTimeoutLocked() { + mLooper->removeMessages(mHandler, MSG_INACTIVITY_TIMEOUT); + + nsecs_t timeout = mLocked.inactivityTimeout == INACTIVITY_TIMEOUT_SHORT + ? INACTIVITY_TIMEOUT_DELAY_TIME_SHORT : INACTIVITY_TIMEOUT_DELAY_TIME_NORMAL; + mLooper->sendMessageDelayed(timeout, mHandler, MSG_INACTIVITY_TIMEOUT); +} + +void PointerController::removeInactivityTimeoutLocked() { + mLooper->removeMessages(mHandler, MSG_INACTIVITY_TIMEOUT); +} + +void PointerController::updatePointerLocked() { + mSpriteController->openTransaction(); + + mLocked.pointerSprite->setLayer(Sprite::BASE_LAYER_POINTER); + mLocked.pointerSprite->setPosition(mLocked.pointerX, mLocked.pointerY); + + if (mLocked.pointerAlpha > 0) { + mLocked.pointerSprite->setAlpha(mLocked.pointerAlpha); + mLocked.pointerSprite->setVisible(true); + } else { + mLocked.pointerSprite->setVisible(false); + } + + if (mLocked.pointerIconChanged || mLocked.presentationChanged) { + mLocked.pointerSprite->setIcon(mLocked.presentation == PRESENTATION_POINTER + ? mLocked.pointerIcon : mResources.spotAnchor); + mLocked.pointerIconChanged = false; + mLocked.presentationChanged = false; + } + + mSpriteController->closeTransaction(); +} + +PointerController::Spot* PointerController::getSpotLocked(uint32_t id) { + for (size_t i = 0; i < mLocked.spots.size(); i++) { + Spot* spot = mLocked.spots.itemAt(i); + if (spot->id == id) { + return spot; + } + } + return NULL; +} + +PointerController::Spot* PointerController::createAndAddSpotLocked(uint32_t id) { + // Remove spots until we have fewer than MAX_SPOTS remaining. + while (mLocked.spots.size() >= MAX_SPOTS) { + Spot* spot = removeFirstFadingSpotLocked(); + if (!spot) { + spot = mLocked.spots.itemAt(0); + mLocked.spots.removeAt(0); + } + releaseSpotLocked(spot); + } + + // Obtain a sprite from the recycled pool. + sp<Sprite> sprite; + if (! mLocked.recycledSprites.isEmpty()) { + sprite = mLocked.recycledSprites.top(); + mLocked.recycledSprites.pop(); + } else { + sprite = mSpriteController->createSprite(); + } + + // Return the new spot. + Spot* spot = new Spot(id, sprite); + mLocked.spots.push(spot); + return spot; +} + +PointerController::Spot* PointerController::removeFirstFadingSpotLocked() { + for (size_t i = 0; i < mLocked.spots.size(); i++) { + Spot* spot = mLocked.spots.itemAt(i); + if (spot->id == Spot::INVALID_ID) { + mLocked.spots.removeAt(i); + return spot; + } + } + return NULL; +} + +void PointerController::releaseSpotLocked(Spot* spot) { + spot->sprite->clearIcon(); + + if (mLocked.recycledSprites.size() < MAX_RECYCLED_SPRITES) { + mLocked.recycledSprites.push(spot->sprite); + } + + delete spot; +} + +void PointerController::fadeOutAndReleaseSpotLocked(Spot* spot) { + if (spot->id != Spot::INVALID_ID) { + spot->id = Spot::INVALID_ID; + startAnimationLocked(); + } +} + +void PointerController::fadeOutAndReleaseAllSpotsLocked() { + for (size_t i = 0; i < mLocked.spots.size(); i++) { + Spot* spot = mLocked.spots.itemAt(i); + fadeOutAndReleaseSpotLocked(spot); + } +} + +void PointerController::loadResources() { + mPolicy->loadPointerResources(&mResources); +} + + +// --- PointerController::Spot --- + +void PointerController::Spot::updateSprite(const SpriteIcon* icon, float x, float y) { + sprite->setLayer(Sprite::BASE_LAYER_SPOT + id); + sprite->setAlpha(alpha); + sprite->setTransformationMatrix(SpriteTransformationMatrix(scale, 0.0f, 0.0f, scale)); + sprite->setPosition(x, y); + + this->x = x; + this->y = y; + + if (icon != lastIcon) { + lastIcon = icon; + if (icon) { + sprite->setIcon(*icon); + sprite->setVisible(true); + } else { + sprite->setVisible(false); + } + } +} + +} // namespace android |