diff options
Diffstat (limited to 'chromium/ui/events/ozone/evdev/touch_event_converter.cc')
| -rw-r--r-- | chromium/ui/events/ozone/evdev/touch_event_converter.cc | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/chromium/ui/events/ozone/evdev/touch_event_converter.cc b/chromium/ui/events/ozone/evdev/touch_event_converter.cc deleted file mode 100644 index dc3c30a43f6..00000000000 --- a/chromium/ui/events/ozone/evdev/touch_event_converter.cc +++ /dev/null @@ -1,197 +0,0 @@ -// Copyright 2013 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#include "ui/events/ozone/evdev/touch_event_converter.h" - -#include <fcntl.h> -#include <linux/input.h> -#include <poll.h> -#include <stdio.h> -#include <unistd.h> - -#include <cmath> -#include <limits> - -#include "base/bind.h" -#include "base/callback.h" -#include "base/logging.h" -#include "base/message_loop/message_loop.h" -#include "base/message_loop/message_pump_ozone.h" -#include "ui/events/event.h" -#include "ui/events/event_constants.h" -#include "ui/gfx/ozone/surface_factory_ozone.h" - -namespace { - -// Number is determined empirically. -// TODO(rjkroege): Configure this per device. -const float kFingerWidth = 25.f; - -} // namespace - -namespace ui { - -TouchEventConverterEvdev::TouchEventConverterEvdev(int fd, int id) - : pressure_min_(0), - pressure_max_(0), - x_scale_(1.), - y_scale_(1.), - x_max_(std::numeric_limits<int>::max()), - y_max_(std::numeric_limits<int>::max()), - current_slot_(0), - fd_(fd), - id_(id) { - Init(); -} - -TouchEventConverterEvdev::~TouchEventConverterEvdev() { - if (fd_ >= 0 && close(fd_) < 0) - DLOG(WARNING) << "failed close on /dev/input/event" << id_; -} - -void TouchEventConverterEvdev::Init() { - input_absinfo abs = {}; - if (ioctl(fd_, EVIOCGABS(ABS_MT_SLOT), &abs) != -1) { - CHECK_GE(abs.maximum, abs.minimum); - CHECK_GE(abs.minimum, 0); - } else { - DLOG(WARNING) << "failed ioctl EVIOCGABS ABS_MT_SLOT event" << id_; - } - if (ioctl(fd_, EVIOCGABS(ABS_MT_PRESSURE), &abs) != -1) { - pressure_min_ = abs.minimum; - pressure_max_ = abs.maximum; - } else { - DLOG(WARNING) << "failed ioctl EVIOCGABS ABS_MT_PRESSURE event" << id_; - } - int x_min = 0, x_max = 0; - if (ioctl(fd_, EVIOCGABS(ABS_MT_POSITION_X), &abs) != -1) { - x_min = abs.minimum; - x_max = abs.maximum; - } else { - LOG(WARNING) << "failed ioctl EVIOCGABS ABS_X event" << id_; - } - int y_min = 0, y_max = 0; - if (ioctl(fd_, EVIOCGABS(ABS_MT_POSITION_Y), &abs) != -1) { - y_min = abs.minimum; - y_max = abs.maximum; - } else { - LOG(WARNING) << "failed ioctl EVIOCGABS ABS_Y event" << id_; - } - if (x_max && y_max && gfx::SurfaceFactoryOzone::GetInstance()) { - const char* display = - gfx::SurfaceFactoryOzone::GetInstance()->DefaultDisplaySpec(); - int screen_width, screen_height; - int sc = sscanf(display, "%dx%d", &screen_width, &screen_height); - if (sc == 2) { - x_scale_ = (double)screen_width / (x_max - x_min); - y_scale_ = (double)screen_height / (y_max - y_min); - x_max_ = screen_width - 1; - y_max_ = screen_height - 1; - LOG(INFO) << "touch input x_scale=" << x_scale_ - << " y_scale=" << y_scale_; - } else { - LOG(WARNING) << "malformed display spec from " - << "SurfaceFactoryOzone::DefaultDisplaySpec"; - } - } -} - -void TouchEventConverterEvdev::OnFileCanWriteWithoutBlocking(int /* fd */) { - // Read-only file-descriptors. - NOTREACHED(); -} - -void TouchEventConverterEvdev::OnFileCanReadWithoutBlocking(int fd) { - input_event inputs[MAX_FINGERS * 6 + 1]; - ssize_t read_size = read(fd, inputs, sizeof(inputs)); - if (read_size <= 0) - return; - - for (unsigned i = 0; i < read_size / sizeof(*inputs); i++) { - const input_event& input = inputs[i]; - if (input.type == EV_ABS) { - switch (input.code) { - case ABS_MT_TOUCH_MAJOR: - altered_slots_.set(current_slot_); - events_[current_slot_].major_ = input.value; - break; - case ABS_X: - case ABS_MT_POSITION_X: - altered_slots_.set(current_slot_); - events_[current_slot_].x_ = roundf(input.value * x_scale_); - break; - case ABS_Y: - case ABS_MT_POSITION_Y: - altered_slots_.set(current_slot_); - events_[current_slot_].y_ = roundf(input.value * y_scale_); - break; - case ABS_MT_TRACKING_ID: - altered_slots_.set(current_slot_); - if (input.value < 0) { - events_[current_slot_].type_ = ET_TOUCH_RELEASED; - } else { - events_[current_slot_].finger_ = input.value; - events_[current_slot_].type_ = ET_TOUCH_PRESSED; - } - break; - case ABS_MT_PRESSURE: - case ABS_PRESSURE: - altered_slots_.set(current_slot_); - events_[current_slot_].pressure_ = input.value - pressure_min_; - events_[current_slot_].pressure_ /= pressure_max_ - pressure_min_; - break; - case ABS_MT_SLOT: - current_slot_ = input.value; - altered_slots_.set(current_slot_); - break; - default: - NOTREACHED() << "invalid code for EV_ABS: " << input.code; - } - } else if (input.type == EV_SYN) { - switch (input.code) { - case SYN_REPORT: - for (int j = 0; j < MAX_FINGERS; j++) { - if (altered_slots_[j]) { - // TODO(rjkroege): Support elliptical finger regions. - scoped_ptr<TouchEvent> tev(new TouchEvent( - events_[j].type_, - gfx::Point(std::min(x_max_, events_[j].x_), - std::min(y_max_, events_[j].y_)), - /* flags */ 0, - /* touch_id */ j, - base::TimeDelta::FromMicroseconds( - input.time.tv_sec * 1000000 + input.time.tv_usec), - events_[j].pressure_ * kFingerWidth, - events_[j].pressure_ * kFingerWidth, - /* angle */ 0., - events_[j].pressure_)); - DispatchEvent(tev.PassAs<ui::Event>()); - - // Subsequent events for this finger will be touch-move until it - // is released. - events_[j].type_ = ET_TOUCH_MOVED; - } - } - altered_slots_.reset(); - break; - case SYN_MT_REPORT: - case SYN_CONFIG: - case SYN_DROPPED: - NOTREACHED() << "invalid code for EV_SYN: " << input.code; - break; - } - } else if (input.type == EV_KEY) { - switch (input.code) { - case BTN_TOUCH: - break; - default: - NOTREACHED() << "invalid code for EV_KEY: " << input.code; - } - } else { - NOTREACHED() << "invalid type: " << input.type; - } - } -} - -} // namespace ui |