blob: 2df5db850ad0710696854a700b0f833410b2831c [file] [log] [blame]
// Copyright 2023 The Pigweed Authors
//
// 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
//
// https://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 "pw_touchscreen/touchscreen.h"
#include <math.h>
#include <cinttypes>
#define PW_LOG_MODULE_NAME "pw_touchscreen_ft6236"
#define PW_LOG_LEVEL PW_LOG_LEVEL_DEBUG
#include "ft6236/device.h"
#include "pw_log/log.h"
#include "pw_math/vector3.h"
#include "pw_touchscreen_ft6236/touchscreen.h"
namespace pw::touchscreen {
TouchscreenFT6236::TouchscreenFT6236(
pw::ft6236::Device* touch_screen_controller)
: touch_screen_controller_(touch_screen_controller) {}
Status TouchscreenFT6236::Init() {
touch_screen_controller_->Enable();
touch_screen_controller_->LogControllerInfo();
return OkStatus();
}
bool TouchscreenFT6236::Available() { return true; }
bool TouchscreenFT6236::NewTouchEvent() {
if (touch_screen_controller_->TouchCount() > 0) {
return true;
}
return false;
}
TouchEvent TouchscreenFT6236::GetTouchPoint() {
TouchEvent event = {
.type = TouchEventType::None,
.point = {0, 0, 0},
};
Result<bool> read_result = touch_screen_controller_->ReadData();
if (!read_result.ok()) {
return event;
}
if (touch_screen_controller_->TouchCount() > 0) {
pw::ft6236::Touch touch_point1 = touch_screen_controller_->Touch1();
event.point.x = touch_point1.x;
event.point.y = touch_point1.y;
event.point.z = 1;
}
if (last_touch_event.point.z == 0 && event.point.z == 1) {
event.type = TouchEventType::Start;
PW_LOG_DEBUG("Touch Start: x:%d, y:%d, z:%d",
event.point.x,
event.point.y,
event.point.z);
} else if (last_touch_event.point.z == 1 && event.point.z == 1) {
event.type = TouchEventType::Drag;
PW_LOG_DEBUG("Touch Drag : x:%d, y:%d, z:%d",
event.point.x,
event.point.y,
event.point.z);
} else if (last_touch_event.point.z == 1 && event.point.z == 0) {
event.type = TouchEventType::Stop;
PW_LOG_DEBUG("Touch Stop : x:%d, y:%d, z:%d",
event.point.x,
event.point.y,
event.point.z);
}
// TODO(tonymd): Touchscreen should accept parameters on how to transform
// mouse to screen coordinates.
if (event.type == TouchEventType::Start ||
event.type == TouchEventType::Drag) {
int new_x = round(((float)event.point.y / 320.0) * 160.0);
int new_y = round(((240.0 - (float)event.point.x) / 240.0) * 120.0);
event.point.x = new_x;
event.point.y = new_y;
}
last_touch_event = event;
return event;
}
} // namespace pw::touchscreen