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/*
* Copyright 2008, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/input/touch.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_touch_init.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/local_frame_view.h"
#include "third_party/blink/renderer/core/paint/paint_layer_scrollable_area.h"
#include "ui/gfx/geometry/point_f.h"
namespace blink {
namespace {
gfx::Vector2dF ContentsOffset(LocalFrame* frame) {
if (!frame)
return gfx::Vector2dF();
LocalFrameView* frame_view = frame->View();
if (!frame_view)
return gfx::Vector2dF();
float scale = 1.0f / frame->LayoutZoomFactor();
gfx::Vector2dF offset = frame_view->LayoutViewport()->GetScrollOffset();
offset.Scale(scale);
return offset;
}
PhysicalOffset PageToAbsolute(LocalFrame* frame, const gfx::PointF& page_pos) {
float scale_factor = frame ? frame->LayoutZoomFactor() : 1.0f;
gfx::PointF converted_point = gfx::ScalePoint(page_pos, scale_factor);
if (frame && frame->View())
converted_point = frame->View()->DocumentToFrame(converted_point);
return PhysicalOffset::FromPointFFloor(converted_point);
}
} // namespace
Touch::Touch(LocalFrame* frame,
EventTarget* target,
int identifier,
const gfx::PointF& screen_pos,
const gfx::PointF& page_pos,
const gfx::SizeF& radius,
float rotation_angle,
float force)
: target_(target),
identifier_(identifier),
client_pos_(page_pos - ContentsOffset(frame)),
screen_pos_(screen_pos),
page_pos_(page_pos),
radius_(radius),
rotation_angle_(rotation_angle),
force_(force),
absolute_location_(PageToAbsolute(frame, page_pos)) {}
Touch::Touch(EventTarget* target,
int identifier,
const gfx::PointF& client_pos,
const gfx::PointF& screen_pos,
const gfx::PointF& page_pos,
const gfx::SizeF& radius,
float rotation_angle,
float force,
PhysicalOffset absolute_location)
: target_(target),
identifier_(identifier),
client_pos_(client_pos),
screen_pos_(screen_pos),
page_pos_(page_pos),
radius_(radius),
rotation_angle_(rotation_angle),
force_(force),
absolute_location_(absolute_location) {}
Touch::Touch(LocalFrame* frame, const TouchInit* initializer)
: target_(initializer->target()),
identifier_(initializer->identifier()),
client_pos_(initializer->clientX(), initializer->clientY()),
screen_pos_(initializer->screenX(), initializer->screenY()),
page_pos_(initializer->pageX(), initializer->pageY()),
radius_(initializer->radiusX(), initializer->radiusY()),
rotation_angle_(initializer->rotationAngle()),
force_(initializer->force()),
absolute_location_(PageToAbsolute(frame, page_pos_)) {}
Touch* Touch::CloneWithNewTarget(EventTarget* event_target) const {
return MakeGarbageCollected<Touch>(
event_target, identifier_, client_pos_, screen_pos_, page_pos_, radius_,
rotation_angle_, force_, absolute_location_);
}
void Touch::Trace(Visitor* visitor) const {
visitor->Trace(target_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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