More old files deletion.

ui/gfx/interpolated_transform.cc

-// Copyright (c) 2012 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/gfx/interpolated_transform.h"
-
-#include <cmath>
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
-#include "base/logging.h"
-#include "ui/gfx/animation/tween.h"
-
-namespace {
-
-static const double EPSILON = 1e-6;
-
-bool IsMultipleOfNinetyDegrees(double degrees) {
-  double remainder = fabs(fmod(degrees, 90.0));
-  return remainder < EPSILON || 90.0 - remainder < EPSILON;
-}
-
-// Returns false if |degrees| is not a multiple of ninety degrees or if
-// |rotation| is NULL. It does not affect |rotation| in this case. Otherwise
-// *rotation is set to be the appropriate sanitized rotation matrix. That is,
-// the rotation matrix corresponding to |degrees| which has entries that are all
-// either 0, 1 or -1.
-bool MassageRotationIfMultipleOfNinetyDegrees(gfx::Transform* rotation,
-                                              float degrees) {
-  if (!IsMultipleOfNinetyDegrees(degrees) || !rotation)
-    return false;
-
-  gfx::Transform transform;
-  SkMatrix44& m = transform.matrix();
-  float degrees_by_ninety = degrees / 90.0f;
-
-  int n = static_cast<int>(degrees_by_ninety > 0
-      ? floor(degrees_by_ninety + 0.5f)
-      : ceil(degrees_by_ninety - 0.5f));
-
-  n %= 4;
-  if (n < 0)
-    n += 4;
-
-  // n should now be in the range [0, 3]
-  if (n == 1) {
-    m.set3x3( 0,  1,  0,
-             -1,  0,  0,
-              0,  0,  1);
-  } else if (n == 2) {
-    m.set3x3(-1,  0,  0,
-              0, -1,  0,
-              0,  0,  1);
-  } else if (n == 3) {
-    m.set3x3( 0, -1,  0,
-              1,  0,  0,
-              0,  0,  1);
-  }
-
-  *rotation = transform;
-  return true;
-}
-
-} // namespace
-
-namespace ui {
-
-///////////////////////////////////////////////////////////////////////////////
-// InterpolatedTransform
-//
-
-InterpolatedTransform::InterpolatedTransform()
-    : start_time_(0.0f),
-      end_time_(1.0f),
-      reversed_(false) {
-}
-
-InterpolatedTransform::InterpolatedTransform(float start_time,
-                                             float end_time)
-    : start_time_(start_time),
-      end_time_(end_time),
-      reversed_(false) {
-}
-
-InterpolatedTransform::~InterpolatedTransform() {}
-
-gfx::Transform InterpolatedTransform::Interpolate(float t) const {
-  if (reversed_)
-    t = 1.0f - t;
-  gfx::Transform result = InterpolateButDoNotCompose(t);
-  if (child_.get()) {
-    result.ConcatTransform(child_->Interpolate(t));
-  }
-  return result;
-}
-
-void InterpolatedTransform::SetChild(InterpolatedTransform* child) {
-  child_.reset(child);
-}
-
-inline float InterpolatedTransform::ValueBetween(float time,
-                                                 float start_value,
-                                                 float end_value) const {
-  // can't handle NaN
-  DCHECK(time == time && start_time_ == start_time_ && end_time_ == end_time_);
-  if (time != time || start_time_ != start_time_ || end_time_ != end_time_)
-    return start_value;
-
-  // Ok if equal -- we'll get a step function. Note: if end_time_ ==
-  // start_time_ == x, then if none of the numbers are NaN, then it
-  // must be true that time < x or time >= x, so we will return early
-  // due to one of the following if statements.
-  DCHECK(end_time_ >= start_time_);
-
-  if (time < start_time_)
-    return start_value;
-
-  if (time >= end_time_)
-    return end_value;
-
-  float t = (time - start_time_) / (end_time_ - start_time_);
-  return static_cast<float>(
-      gfx::Tween::DoubleValueBetween(t, start_value, end_value));
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// InterpolatedRotation
-//
-
-InterpolatedRotation::InterpolatedRotation(float start_degrees,
-                                           float end_degrees)
-    : InterpolatedTransform(),
-      start_degrees_(start_degrees),
-      end_degrees_(end_degrees) {
-}
-
-InterpolatedRotation::InterpolatedRotation(float start_degrees,
-                                           float end_degrees,
-                                           float start_time,
-                                           float end_time)
-    : InterpolatedTransform(start_time, end_time),
-      start_degrees_(start_degrees),
-      end_degrees_(end_degrees) {
-}
-
-InterpolatedRotation::~InterpolatedRotation() {}
-
-gfx::Transform InterpolatedRotation::InterpolateButDoNotCompose(float t) const {
-  gfx::Transform result;
-  float interpolated_degrees = ValueBetween(t, start_degrees_, end_degrees_);
-  result.Rotate(interpolated_degrees);
-  if (t == 0.0f || t == 1.0f)
-    MassageRotationIfMultipleOfNinetyDegrees(&result, interpolated_degrees);
-  return result;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// InterpolatedAxisAngleRotation
-//
-
-InterpolatedAxisAngleRotation::InterpolatedAxisAngleRotation(
-    const gfx::Vector3dF& axis,
-    float start_degrees,
-    float end_degrees)
-    : InterpolatedTransform(),
-      axis_(axis),
-      start_degrees_(start_degrees),
-      end_degrees_(end_degrees) {
-}
-
-InterpolatedAxisAngleRotation::InterpolatedAxisAngleRotation(
-    const gfx::Vector3dF& axis,
-    float start_degrees,
-    float end_degrees,
-    float start_time,
-    float end_time)
-    : InterpolatedTransform(start_time, end_time),
-      axis_(axis),
-      start_degrees_(start_degrees),
-      end_degrees_(end_degrees) {
-}
-
-InterpolatedAxisAngleRotation::~InterpolatedAxisAngleRotation() {}
-
-gfx::Transform
-InterpolatedAxisAngleRotation::InterpolateButDoNotCompose(float t) const {
-  gfx::Transform result;
-  result.RotateAbout(axis_, ValueBetween(t, start_degrees_, end_degrees_));
-  return result;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// InterpolatedScale
-//
-
-InterpolatedScale::InterpolatedScale(float start_scale, float end_scale)
-    : InterpolatedTransform(),
-      start_scale_(gfx::Point3F(start_scale, start_scale, start_scale)),
-      end_scale_(gfx::Point3F(end_scale, end_scale, end_scale)) {
-}
-
-InterpolatedScale::InterpolatedScale(float start_scale, float end_scale,
-                                     float start_time, float end_time)
-    : InterpolatedTransform(start_time, end_time),
-      start_scale_(gfx::Point3F(start_scale, start_scale, start_scale)),
-      end_scale_(gfx::Point3F(end_scale, end_scale, end_scale)) {
-}
-
-InterpolatedScale::InterpolatedScale(const gfx::Point3F& start_scale,
-                                     const gfx::Point3F& end_scale)
-    : InterpolatedTransform(),
-      start_scale_(start_scale),
-      end_scale_(end_scale) {
-}
-
-InterpolatedScale::InterpolatedScale(const gfx::Point3F& start_scale,
-                                     const gfx::Point3F& end_scale,
-                                     float start_time,
-                                     float end_time)
-    : InterpolatedTransform(start_time, end_time),
-      start_scale_(start_scale),
-      end_scale_(end_scale) {
-}
-
-InterpolatedScale::~InterpolatedScale() {}
-
-gfx::Transform InterpolatedScale::InterpolateButDoNotCompose(float t) const {
-  gfx::Transform result;
-  float scale_x = ValueBetween(t, start_scale_.x(), end_scale_.x());
-  float scale_y = ValueBetween(t, start_scale_.y(), end_scale_.y());
-  float scale_z = ValueBetween(t, start_scale_.z(), end_scale_.z());
-  result.Scale3d(scale_x, scale_y, scale_z);
-  return result;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// InterpolatedTranslation
-//
-
-InterpolatedTranslation::InterpolatedTranslation(const gfx::Point& start_pos,
-                                                 const gfx::Point& end_pos)
-    : InterpolatedTransform(),
-      start_pos_(start_pos),
-      end_pos_(end_pos) {
-}
-
-InterpolatedTranslation::InterpolatedTranslation(const gfx::Point& start_pos,
-                                                 const gfx::Point& end_pos,
-                                                 float start_time,
-                                                 float end_time)
-    : InterpolatedTransform(start_time, end_time),
-      start_pos_(start_pos),
-      end_pos_(end_pos) {
-}
-
-InterpolatedTranslation::InterpolatedTranslation(const gfx::Point3F& start_pos,
-                                                 const gfx::Point3F& end_pos)
-    : InterpolatedTransform(), start_pos_(start_pos), end_pos_(end_pos) {
-}
-
-InterpolatedTranslation::InterpolatedTranslation(const gfx::Point3F& start_pos,
-                                                 const gfx::Point3F& end_pos,
-                                                 float start_time,
-                                                 float end_time)
-    : InterpolatedTransform(start_time, end_time),
-      start_pos_(start_pos),
-      end_pos_(end_pos) {
-}
-
-InterpolatedTranslation::~InterpolatedTranslation() {}
-
-gfx::Transform
-InterpolatedTranslation::InterpolateButDoNotCompose(float t) const {
-  gfx::Transform result;
-  result.Translate3d(ValueBetween(t, start_pos_.x(), end_pos_.x()),
-                     ValueBetween(t, start_pos_.y(), end_pos_.y()),
-                     ValueBetween(t, start_pos_.z(), end_pos_.z()));
-  return result;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// InterpolatedConstantTransform
-//
-
-InterpolatedConstantTransform::InterpolatedConstantTransform(
-  const gfx::Transform& transform)
-    : InterpolatedTransform(),
-  transform_(transform) {
-}
-
-gfx::Transform
-InterpolatedConstantTransform::InterpolateButDoNotCompose(float t) const {
-  return transform_;
-}
-
-InterpolatedConstantTransform::~InterpolatedConstantTransform() {}
-
-///////////////////////////////////////////////////////////////////////////////
-// InterpolatedTransformAboutPivot
-//
-
-InterpolatedTransformAboutPivot::InterpolatedTransformAboutPivot(
-  const gfx::Point& pivot,
-  InterpolatedTransform* transform)
-    : InterpolatedTransform() {
-  Init(pivot, transform);
-}
-
-InterpolatedTransformAboutPivot::InterpolatedTransformAboutPivot(
-  const gfx::Point& pivot,
-  InterpolatedTransform* transform,
-  float start_time,
-  float end_time)
-    : InterpolatedTransform() {
-  Init(pivot, transform);
-}
-
-InterpolatedTransformAboutPivot::~InterpolatedTransformAboutPivot() {}
-
-gfx::Transform
-InterpolatedTransformAboutPivot::InterpolateButDoNotCompose(float t) const {
-  if (transform_.get()) {
-    return transform_->Interpolate(t);
-  }
-  return gfx::Transform();
-}
-
-void InterpolatedTransformAboutPivot::Init(const gfx::Point& pivot,
-                                           InterpolatedTransform* xform) {
-  gfx::Transform to_pivot;
-  gfx::Transform from_pivot;
-  to_pivot.Translate(-pivot.x(), -pivot.y());
-  from_pivot.Translate(pivot.x(), pivot.y());
-
-  scoped_ptr<InterpolatedTransform> pre_transform(
-    new InterpolatedConstantTransform(to_pivot));
-  scoped_ptr<InterpolatedTransform> post_transform(
-    new InterpolatedConstantTransform(from_pivot));
-
-  pre_transform->SetChild(xform);
-  xform->SetChild(post_transform.release());
-  transform_.reset(pre_transform.release());
-}
-
-InterpolatedMatrixTransform::InterpolatedMatrixTransform(
-    const gfx::Transform& start_transform,
-    const gfx::Transform& end_transform)
-    : InterpolatedTransform() {
-  Init(start_transform, end_transform);
-}
-
-InterpolatedMatrixTransform::InterpolatedMatrixTransform(
-    const gfx::Transform& start_transform,
-    const gfx::Transform& end_transform,
-    float start_time,
-    float end_time)
-    : InterpolatedTransform() {
-  Init(start_transform, end_transform);
-}
-
-InterpolatedMatrixTransform::~InterpolatedMatrixTransform() {}
-
-gfx::Transform
-InterpolatedMatrixTransform::InterpolateButDoNotCompose(float t) const {
-  gfx::DecomposedTransform blended;
-  bool success = gfx::BlendDecomposedTransforms(&blended,
-                                                end_decomp_,
-                                                start_decomp_,
-                                                t);
-  DCHECK(success);
-  return gfx::ComposeTransform(blended);
-}
-
-void InterpolatedMatrixTransform::Init(const gfx::Transform& start_transform,
-                                       const gfx::Transform& end_transform) {
-  bool success = gfx::DecomposeTransform(&start_decomp_, start_transform);
-  DCHECK(success);
-  success = gfx::DecomposeTransform(&end_decomp_, end_transform);
-  DCHECK(success);
-}
-
-} // namespace ui