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/*
* Copyright (C) 2019 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.
*/
#include "TouchButtonAccumulator.h"
#include "EventHub.h"
#include "InputDevice.h"
namespace android {
void TouchButtonAccumulator::configure() {
mHaveBtnTouch = mDeviceContext.hasScanCode(BTN_TOUCH);
mHaveStylus = mDeviceContext.hasScanCode(BTN_TOOL_PEN) ||
mDeviceContext.hasScanCode(BTN_TOOL_RUBBER) ||
mDeviceContext.hasScanCode(BTN_TOOL_BRUSH) ||
mDeviceContext.hasScanCode(BTN_TOOL_PENCIL) ||
mDeviceContext.hasScanCode(BTN_TOOL_AIRBRUSH);
}
void TouchButtonAccumulator::reset() {
mBtnTouch = mDeviceContext.isKeyPressed(BTN_TOUCH);
mBtnStylus = mDeviceContext.isKeyPressed(BTN_STYLUS) ||
mDeviceContext.isKeyCodePressed(AKEYCODE_STYLUS_BUTTON_PRIMARY);
// BTN_0 is what gets mapped for the HID usage Digitizers.SecondaryBarrelSwitch
mBtnStylus2 = mDeviceContext.isKeyPressed(BTN_STYLUS2) || mDeviceContext.isKeyPressed(BTN_0) ||
mDeviceContext.isKeyCodePressed(AKEYCODE_STYLUS_BUTTON_SECONDARY);
mBtnToolFinger = mDeviceContext.isKeyPressed(BTN_TOOL_FINGER);
mBtnToolPen = mDeviceContext.isKeyPressed(BTN_TOOL_PEN);
mBtnToolRubber = mDeviceContext.isKeyPressed(BTN_TOOL_RUBBER);
mBtnToolBrush = mDeviceContext.isKeyPressed(BTN_TOOL_BRUSH);
mBtnToolPencil = mDeviceContext.isKeyPressed(BTN_TOOL_PENCIL);
mBtnToolAirbrush = mDeviceContext.isKeyPressed(BTN_TOOL_AIRBRUSH);
mBtnToolMouse = mDeviceContext.isKeyPressed(BTN_TOOL_MOUSE);
mBtnToolLens = mDeviceContext.isKeyPressed(BTN_TOOL_LENS);
mBtnToolDoubleTap = mDeviceContext.isKeyPressed(BTN_TOOL_DOUBLETAP);
mBtnToolTripleTap = mDeviceContext.isKeyPressed(BTN_TOOL_TRIPLETAP);
mBtnToolQuadTap = mDeviceContext.isKeyPressed(BTN_TOOL_QUADTAP);
mBtnToolQuintTap = mDeviceContext.isKeyPressed(BTN_TOOL_QUINTTAP);
mHidUsageAccumulator.reset();
}
void TouchButtonAccumulator::process(const RawEvent* rawEvent) {
mHidUsageAccumulator.process(*rawEvent);
if (rawEvent->type == EV_KEY) {
switch (rawEvent->code) {
case BTN_TOUCH:
mBtnTouch = rawEvent->value;
break;
case BTN_STYLUS:
mBtnStylus = rawEvent->value;
break;
case BTN_STYLUS2:
case BTN_0: // BTN_0 is what gets mapped for the HID usage
// Digitizers.SecondaryBarrelSwitch
mBtnStylus2 = rawEvent->value;
break;
case BTN_TOOL_FINGER:
mBtnToolFinger = rawEvent->value;
break;
case BTN_TOOL_PEN:
mBtnToolPen = rawEvent->value;
break;
case BTN_TOOL_RUBBER:
mBtnToolRubber = rawEvent->value;
break;
case BTN_TOOL_BRUSH:
mBtnToolBrush = rawEvent->value;
break;
case BTN_TOOL_PENCIL:
mBtnToolPencil = rawEvent->value;
break;
case BTN_TOOL_AIRBRUSH:
mBtnToolAirbrush = rawEvent->value;
break;
case BTN_TOOL_MOUSE:
mBtnToolMouse = rawEvent->value;
break;
case BTN_TOOL_LENS:
mBtnToolLens = rawEvent->value;
break;
case BTN_TOOL_DOUBLETAP:
mBtnToolDoubleTap = rawEvent->value;
break;
case BTN_TOOL_TRIPLETAP:
mBtnToolTripleTap = rawEvent->value;
break;
case BTN_TOOL_QUADTAP:
mBtnToolQuadTap = rawEvent->value;
break;
case BTN_TOOL_QUINTTAP:
mBtnToolQuintTap = rawEvent->value;
break;
default:
processMappedKey(rawEvent->code, rawEvent->value);
}
return;
}
}
void TouchButtonAccumulator::processMappedKey(int32_t scanCode, bool down) {
int32_t keyCode, metaState;
uint32_t flags;
if (mDeviceContext.mapKey(scanCode, mHidUsageAccumulator.consumeCurrentHidUsage(),
/*metaState=*/0, &keyCode, &metaState, &flags) != OK) {
return;
}
switch (keyCode) {
case AKEYCODE_STYLUS_BUTTON_PRIMARY:
mBtnStylus = down;
break;
case AKEYCODE_STYLUS_BUTTON_SECONDARY:
mBtnStylus2 = down;
break;
default:
break;
}
}
uint32_t TouchButtonAccumulator::getButtonState() const {
uint32_t result = 0;
if (mBtnStylus) {
result |= AMOTION_EVENT_BUTTON_STYLUS_PRIMARY;
}
if (mBtnStylus2) {
result |= AMOTION_EVENT_BUTTON_STYLUS_SECONDARY;
}
return result;
}
ToolType TouchButtonAccumulator::getToolType() const {
if (mBtnToolMouse || mBtnToolLens) {
return ToolType::MOUSE;
}
if (mBtnToolRubber) {
return ToolType::ERASER;
}
if (mBtnToolPen || mBtnToolBrush || mBtnToolPencil || mBtnToolAirbrush) {
return ToolType::STYLUS;
}
if (mBtnToolFinger || mBtnToolDoubleTap || mBtnToolTripleTap || mBtnToolQuadTap ||
mBtnToolQuintTap) {
return ToolType::FINGER;
}
return ToolType::UNKNOWN;
}
bool TouchButtonAccumulator::isToolActive() const {
return mBtnTouch || mBtnToolFinger || mBtnToolPen || mBtnToolRubber || mBtnToolBrush ||
mBtnToolPencil || mBtnToolAirbrush || mBtnToolMouse || mBtnToolLens ||
mBtnToolDoubleTap || mBtnToolTripleTap || mBtnToolQuadTap || mBtnToolQuintTap;
}
bool TouchButtonAccumulator::isHovering() const {
return mHaveBtnTouch && !mBtnTouch;
}
bool TouchButtonAccumulator::hasStylus() const {
return mHaveStylus;
}
bool TouchButtonAccumulator::hasButtonTouch() const {
return mHaveBtnTouch;
}
int TouchButtonAccumulator::getTouchCount() const {
if (mBtnTouch) {
if (mBtnToolQuintTap) return 5;
if (mBtnToolQuadTap) return 4;
if (mBtnToolTripleTap) return 3;
if (mBtnToolDoubleTap) return 2;
if (mBtnToolFinger) return 1;
}
return 0;
}
} // namespace android
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