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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/wayland/zcr_stylus.h"
#include "base/memory/raw_ptr.h"
#include "components/exo/pointer.h"
#include "components/exo/pointer_stylus_delegate.h"
#include "components/exo/touch.h"
#include "components/exo/touch_stylus_delegate.h"
#include "components/exo/wayland/server_util.h"
namespace exo::wayland {
namespace {
////////////////////////////////////////////////////////////////////////////////
// zcr_touch_stylus_v2 interface:
class WaylandTouchStylusDelegate : public TouchStylusDelegate {
public:
WaylandTouchStylusDelegate(wl_resource* resource, Touch* touch)
: resource_(resource), touch_(touch) {
touch_->SetStylusDelegate(this);
}
WaylandTouchStylusDelegate(const WaylandTouchStylusDelegate&) = delete;
WaylandTouchStylusDelegate& operator=(const WaylandTouchStylusDelegate&) =
delete;
~WaylandTouchStylusDelegate() override {
if (touch_ != nullptr)
touch_->SetStylusDelegate(nullptr);
}
void OnTouchDestroying(Touch* touch) override { touch_ = nullptr; }
void OnTouchTool(int touch_id, ui::EventPointerType type) override {
uint wayland_type = ZCR_TOUCH_STYLUS_V2_TOOL_TYPE_TOUCH;
if (type == ui::EventPointerType::kPen)
wayland_type = ZCR_TOUCH_STYLUS_V2_TOOL_TYPE_PEN;
else if (type == ui::EventPointerType::kEraser)
wayland_type = ZCR_TOUCH_STYLUS_V2_TOOL_TYPE_ERASER;
zcr_touch_stylus_v2_send_tool(resource_, touch_id, wayland_type);
}
void OnTouchForce(base::TimeTicks time_stamp,
int touch_id,
float force) override {
zcr_touch_stylus_v2_send_force(resource_,
TimeTicksToMilliseconds(time_stamp),
touch_id, wl_fixed_from_double(force));
}
void OnTouchTilt(base::TimeTicks time_stamp,
int touch_id,
const gfx::Vector2dF& tilt) override {
zcr_touch_stylus_v2_send_tilt(
resource_, TimeTicksToMilliseconds(time_stamp), touch_id,
wl_fixed_from_double(tilt.x()), wl_fixed_from_double(tilt.y()));
}
private:
raw_ptr<wl_resource> resource_;
raw_ptr<Touch> touch_;
};
void touch_stylus_destroy(wl_client* client, wl_resource* resource) {
wl_resource_destroy(resource);
}
const struct zcr_touch_stylus_v2_interface touch_stylus_implementation = {
touch_stylus_destroy};
////////////////////////////////////////////////////////////////////////////////
// zcr_pointer_stylus_v2 interface:
class WaylandPointerStylusDelegate : public PointerStylusDelegate {
public:
WaylandPointerStylusDelegate(wl_resource* resource, Pointer* pointer)
: resource_(resource), pointer_(pointer) {
pointer_->SetStylusDelegate(this);
}
WaylandPointerStylusDelegate(const WaylandPointerStylusDelegate&) = delete;
const WaylandPointerStylusDelegate& operator=(
const WaylandPointerStylusDelegate&) = delete;
~WaylandPointerStylusDelegate() override {
if (pointer_ != nullptr)
pointer_->SetStylusDelegate(nullptr);
}
void OnPointerDestroying(Pointer* pointer) override { pointer_ = nullptr; }
void OnPointerToolChange(ui::EventPointerType type) override {
uint wayland_type = ZCR_POINTER_STYLUS_V2_TOOL_TYPE_NONE;
if (type == ui::EventPointerType::kTouch)
wayland_type = ZCR_POINTER_STYLUS_V2_TOOL_TYPE_TOUCH;
else if (type == ui::EventPointerType::kPen)
wayland_type = ZCR_POINTER_STYLUS_V2_TOOL_TYPE_PEN;
else if (type == ui::EventPointerType::kEraser)
wayland_type = ZCR_POINTER_STYLUS_V2_TOOL_TYPE_ERASER;
zcr_pointer_stylus_v2_send_tool(resource_, wayland_type);
supports_force_ = false;
supports_tilt_ = false;
}
void OnPointerForce(base::TimeTicks time_stamp, float force) override {
// Set the force as 0 if the current tool previously reported a valid
// force, but is now reporting a NaN value indicating that force is not
// supported.
if (std::isnan(force)) {
if (supports_force_)
force = 0;
else
return;
}
supports_force_ = true;
zcr_pointer_stylus_v2_send_force(resource_,
TimeTicksToMilliseconds(time_stamp),
wl_fixed_from_double(force));
}
void OnPointerTilt(base::TimeTicks time_stamp,
const gfx::Vector2dF& tilt) override {
if (!supports_tilt_ && tilt.IsZero())
return;
supports_tilt_ = true;
zcr_pointer_stylus_v2_send_tilt(
resource_, TimeTicksToMilliseconds(time_stamp),
wl_fixed_from_double(tilt.x()), wl_fixed_from_double(tilt.y()));
}
private:
raw_ptr<wl_resource> resource_;
raw_ptr<Pointer> pointer_;
bool supports_force_ = false;
bool supports_tilt_ = false;
};
void pointer_stylus_destroy(wl_client* client, wl_resource* resource) {
wl_resource_destroy(resource);
}
const struct zcr_pointer_stylus_v2_interface pointer_stylus_implementation = {
pointer_stylus_destroy};
////////////////////////////////////////////////////////////////////////////////
// zcr_stylus_v2 interface:
void stylus_get_touch_stylus(wl_client* client,
wl_resource* resource,
uint32_t id,
wl_resource* touch_resource) {
Touch* touch = GetUserDataAs<Touch>(touch_resource);
if (touch->HasStylusDelegate()) {
wl_resource_post_error(
resource, ZCR_STYLUS_V2_ERROR_TOUCH_STYLUS_EXISTS,
"touch has already been associated with a stylus object");
return;
}
wl_resource* stylus_resource =
wl_resource_create(client, &zcr_touch_stylus_v2_interface,
wl_resource_get_version(resource), id);
SetImplementation(
stylus_resource, &touch_stylus_implementation,
std::make_unique<WaylandTouchStylusDelegate>(stylus_resource, touch));
}
void stylus_get_pointer_stylus(wl_client* client,
wl_resource* resource,
uint32_t id,
wl_resource* pointer_resource) {
Pointer* pointer = GetUserDataAs<Pointer>(pointer_resource);
if (pointer->HasStylusDelegate()) {
wl_resource_post_error(
resource, ZCR_STYLUS_V2_ERROR_POINTER_STYLUS_EXISTS,
"pointer has already been associated with a stylus object");
return;
}
wl_resource* stylus_resource =
wl_resource_create(client, &zcr_pointer_stylus_v2_interface,
wl_resource_get_version(resource), id);
SetImplementation(
stylus_resource, &pointer_stylus_implementation,
std::make_unique<WaylandPointerStylusDelegate>(stylus_resource, pointer));
}
const struct zcr_stylus_v2_interface stylus_v2_implementation = {
stylus_get_touch_stylus, stylus_get_pointer_stylus};
} // namespace
void bind_stylus_v2(wl_client* client,
void* data,
uint32_t version,
uint32_t id) {
wl_resource* resource =
wl_resource_create(client, &zcr_stylus_v2_interface, version, id);
wl_resource_set_implementation(resource, &stylus_v2_implementation, data,
nullptr);
}
} // namespace exo::wayland
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