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// Copyright 2018 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/rrect_f.h"
#include <iomanip>
#include <iostream>
#include <sstream>
#include "base/values.h"
#include "third_party/skia/include/core/SkMatrix.h"
namespace gfx {
// Sets all x radii to x_rad, and all y radii to y_rad. If one of x_rad or
// y_rad are zero, sets ALL radii to zero.
RRectF::RRectF(float x,
float y,
float width,
float height,
float x_rad,
float y_rad)
: skrrect_(SkRRect::MakeRectXY(SkRect::MakeXYWH(x, y, width, height),
x_rad,
y_rad)) {
if (IsEmpty()) {
// Make sure that empty rects are created fully empty, not with some
// non-zero dimensions.
skrrect_ = SkRRect::MakeEmpty();
}
}
// Directly sets all four corners.
RRectF::RRectF(float x,
float y,
float width,
float height,
float upper_left_x,
float upper_left_y,
float upper_right_x,
float upper_right_y,
float lower_right_x,
float lower_right_y,
float lower_left_x,
float lower_left_y) {
SkVector radii[4] = {
{upper_left_x, upper_left_y},
{upper_right_x, upper_right_y},
{lower_right_x, lower_right_y},
{lower_left_x, lower_left_y},
};
skrrect_.setRectRadii(SkRect::MakeXYWH(x, y, width, height), radii);
if (IsEmpty()) {
// Make sure that empty rects are created fully empty, not with some
// non-zero dimensions.
skrrect_ = SkRRect::MakeEmpty();
}
}
gfx::Vector2dF RRectF::GetSimpleRadii() const {
DCHECK(GetType() <= Type::kOval);
SkPoint result = skrrect_.getSimpleRadii();
return gfx::Vector2dF(result.x(), result.y());
}
float RRectF::GetSimpleRadius() const {
DCHECK(GetType() <= Type::kOval);
SkPoint result = skrrect_.getSimpleRadii();
DCHECK_EQ(result.x(), result.y());
return result.x();
}
RRectF::Type RRectF::GetType() const {
SkPoint rad;
switch (skrrect_.getType()) {
case SkRRect::kEmpty_Type:
return Type::kEmpty;
case SkRRect::kRect_Type:
return Type::kRect;
case SkRRect::kSimple_Type:
rad = skrrect_.getSimpleRadii();
if (rad.x() == rad.y()) {
return Type::kSingle;
}
return Type::kSimple;
case SkRRect::kOval_Type:
rad = skrrect_.getSimpleRadii();
if (rad.x() == rad.y()) {
return Type::kSingle;
}
return Type::kOval;
case SkRRect::kNinePatch_Type:
case SkRRect::kComplex_Type:
default:
return Type::kComplex;
}
}
gfx::Vector2dF RRectF::GetCornerRadii(Corner corner) const {
SkPoint result = skrrect_.radii(SkRRect::Corner(corner));
return gfx::Vector2dF(result.x(), result.y());
}
void RRectF::GetAllRadii(SkVector radii[4]) const {
// Unfortunately, the only way to get all radii is one at a time.
radii[SkRRect::kUpperLeft_Corner] =
skrrect_.radii(SkRRect::kUpperLeft_Corner);
radii[SkRRect::kUpperRight_Corner] =
skrrect_.radii(SkRRect::kUpperRight_Corner);
radii[SkRRect::kLowerRight_Corner] =
skrrect_.radii(SkRRect::kLowerRight_Corner);
radii[SkRRect::kLowerLeft_Corner] =
skrrect_.radii(SkRRect::kLowerLeft_Corner);
}
void RRectF::SetCornerRadii(Corner corner, float x_rad, float y_rad) {
// Unfortunately, the only way to set this is to create a new SkRRect.
SkVector radii[4];
GetAllRadii(radii);
radii[SkRRect::Corner(corner)] = SkPoint::Make(x_rad, y_rad);
skrrect_.setRectRadii(skrrect_.rect(), radii);
}
void RRectF::Scale(float x_scale, float y_scale) {
if (IsEmpty()) {
// SkRRect doesn't support scaling of empty rects.
return;
}
if (!x_scale || !y_scale) {
// SkRRect doesn't support scaling TO an empty rect.
skrrect_ = SkRRect::MakeEmpty();
return;
}
SkMatrix scale = SkMatrix::Scale(x_scale, y_scale);
SkRRect result;
bool success = skrrect_.transform(scale, &result);
DCHECK(success);
skrrect_ = result;
}
void RRectF::Offset(float horizontal, float vertical) {
skrrect_.offset(horizontal, vertical);
}
const RRectF& RRectF::operator+=(const gfx::Vector2dF& offset) {
Offset(offset.x(), offset.y());
return *this;
}
const RRectF& RRectF::operator-=(const gfx::Vector2dF& offset) {
Offset(-offset.x(), -offset.y());
return *this;
}
std::string RRectF::ToString() const {
std::stringstream ss;
ss << std::fixed << std::setprecision(3);
ss << rect().origin().x() << "," << rect().origin().y() << " "
<< rect().size().width() << "x" << rect().size().height();
Type type = this->GetType();
if (type <= Type::kRect) {
ss << ", rectangular";
} else if (type <= Type::kSingle) {
ss << ", radius " << GetSimpleRadius();
} else if (type <= Type::kSimple) {
gfx::Vector2dF radii = GetSimpleRadii();
ss << ", x_rad " << radii.x() << ", y_rad " << radii.y();
} else {
ss << ",";
const Corner corners[] = {Corner::kUpperLeft, Corner::kUpperRight,
Corner::kLowerRight, Corner::kLowerLeft};
for (const auto& c : corners) {
auto this_corner = GetCornerRadii(c);
ss << " [" << this_corner.x() << " " << this_corner.y() << "]";
}
}
return ss.str();
}
namespace {
inline bool AboveTol(float val1, float val2, float tolerance) {
return (std::abs(val1 - val2) > tolerance);
}
} // namespace
bool RRectF::ApproximatelyEqual(const RRectF& rect, float tolerance) const {
if (AboveTol(skrrect_.rect().x(), rect.skrrect_.rect().x(), tolerance) ||
AboveTol(skrrect_.rect().y(), rect.skrrect_.rect().y(), tolerance) ||
AboveTol(skrrect_.width(), rect.skrrect_.width(), tolerance) ||
AboveTol(skrrect_.height(), rect.skrrect_.height(), tolerance))
return false;
for (int i = 0; i < 4; i++) {
SkVector r1 = skrrect_.radii(SkRRect::Corner(i));
SkVector r2 = rect.skrrect_.radii(SkRRect::Corner(i));
if (std::abs(r1.x() - r2.x()) > tolerance ||
std::abs(r1.y() - r2.y()) > tolerance) {
return false;
}
}
return true;
}
} // namespace gfx
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