chromium/third_party/blink/renderer/core/frame/rotation_viewport_anchor.cc

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/frame/rotation_viewport_anchor.h"

#include "third_party/blink/renderer/core/dom/container_node.h"
#include "third_party/blink/renderer/core/dom/node.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/frame/page_scale_constraints_set.h"
#include "third_party/blink/renderer/core/frame/root_frame_viewport.h"
#include "third_party/blink/renderer/core/frame/visual_viewport.h"
#include "third_party/blink/renderer/core/input/event_handler.h"
#include "third_party/blink/renderer/core/layout/hit_test_result.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"
#include "ui/gfx/geometry/point_conversions.h"
#include "ui/gfx/geometry/vector2d_conversions.h"

namespace blink {

namespace {

static const float kViewportAnchorRelativeEpsilon = …;
static const int kViewportToNodeMaxRelativeArea = …;

Node* FindNonEmptyAnchorNode(const gfx::PointF& absolute_point,
                             const gfx::Rect& view_rect,
                             EventHandler& event_handler) { … }

void MoveToEncloseRect(gfx::Rect& outer, const gfx::RectF& inner) { … }

void MoveIntoRect(gfx::RectF& inner, const gfx::Rect& outer) { … }

}  // namespace

RotationViewportAnchor::RotationViewportAnchor(
    LocalFrameView& root_frame_view,
    VisualViewport& visual_viewport,
    const gfx::PointF& anchor_in_inner_view_coords,
    PageScaleConstraintsSet& page_scale_constraints_set)
    : … { … }

RotationViewportAnchor::~RotationViewportAnchor() { … }

void RotationViewportAnchor::SetAnchor() { … }

void RotationViewportAnchor::RestoreToAnchor() { … }

ScrollableArea& RotationViewportAnchor::LayoutViewport() const { … }

void RotationViewportAnchor::ComputeOrigins(
    const gfx::SizeF& inner_size,
    gfx::Point& main_frame_origin,
    gfx::PointF& visual_viewport_origin) const { … }

gfx::PointF RotationViewportAnchor::GetInnerOrigin(
    const gfx::SizeF& inner_size) const { … }

}  // namespace blink