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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/controls/separator.h"
#include <algorithm>
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/color/color_id.h"
#include "ui/color/color_provider.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/scoped_canvas.h"
#include "ui/views/metadata/type_conversion.h"
namespace views {
constexpr int Separator::kThickness;
Separator::Separator() = default;
Separator::~Separator() = default;
ui::ColorId Separator::GetColorId() const {
return color_id_;
}
void Separator::SetColorId(ui::ColorId color_id) {
if (color_id_ == color_id) {
return;
}
color_id_ = color_id;
OnPropertyChanged(&color_id_, kPropertyEffectsPaint);
}
int Separator::GetPreferredLength() const {
return preferred_length_;
}
void Separator::SetPreferredLength(int length) {
if (preferred_length_ == length) {
return;
}
preferred_length_ = length;
OnPropertyChanged(&preferred_length_, kPropertyEffectsPreferredSizeChanged);
}
Separator::Orientation Separator::GetOrientation() const {
return orientation_;
}
void Separator::SetOrientation(Orientation orientation) {
orientation_ = orientation;
}
int Separator::GetBorderRadius() const {
return border_radius_;
}
void Separator::SetBorderRadius(int radius) {
border_radius_ = radius;
}
////////////////////////////////////////////////////////////////////////////////
// Separator, View overrides:
gfx::Size Separator::CalculatePreferredSize(
const SizeBounds& /*available_size*/) const {
gfx::Size size(kThickness, preferred_length_);
if (orientation_ == Orientation::kHorizontal) {
size.Transpose();
}
gfx::Insets insets = GetInsets();
size.Enlarge(insets.width(), insets.height());
return size;
}
void Separator::OnPaint(gfx::Canvas* canvas) {
const SkColor color = GetColorProvider()->GetColor(color_id_);
// Paint background and border, if any.
View::OnPaint(canvas);
gfx::ScopedCanvas scoped_canvas(canvas);
const gfx::Insets insets = GetInsets();
const gfx::Rect contents_bounds = GetContentsBounds();
const float dsf = canvas->UndoDeviceScaleFactor();
// This is a hybrid of gfx::ScaleToEnclosedRect() and
// gfx::ScaleToEnclosingRect() based on whether there are nonzero insets on
// any particular side of the separator. If there is no inset, the separator
// will paint all the way out to the edge of the view. If there is an inset,
// the extent of the separator will rounded inward so that it paints only
// full pixels, providing a sharper appearance and preserving the inset.
//
// This allows separators that entirely fill their area to do so, and those
// intended as spacers in a larger flow to do so as well. See
// crbug.com/1016760 and crbug.com/1019503 for examples of why we need to
// handle both cases.
const int x = insets.left() == 0 ? std::floor(contents_bounds.x() * dsf)
: std::ceil(contents_bounds.x() * dsf);
const int y = insets.top() == 0 ? std::floor(contents_bounds.y() * dsf)
: std::ceil(contents_bounds.y() * dsf);
const int r = insets.right() == 0 ? std::ceil(contents_bounds.right() * dsf)
: std::floor(contents_bounds.right() * dsf);
const int b = insets.bottom() == 0
? std::ceil(contents_bounds.bottom() * dsf)
: std::floor(contents_bounds.bottom() * dsf);
// Minimum separator size is 1 px.
const int w = std::max(1, r - x);
const int h = std::max(1, b - y);
if (border_radius_) {
cc::PaintFlags flags;
flags.setColor(color);
flags.setStyle(cc::PaintFlags::kFill_Style);
flags.setBlendMode(SkBlendMode::kSrcOver);
canvas->DrawRoundRect({x, y, w, h}, border_radius_, flags);
} else {
canvas->FillRect({x, y, w, h}, color);
}
}
BEGIN_METADATA(Separator)
ADD_PROPERTY_METADATA(ui::ColorId, ColorId)
ADD_PROPERTY_METADATA(int, PreferredLength)
ADD_PROPERTY_METADATA(Separator::Orientation, Orientation)
ADD_PROPERTY_METADATA(int, BorderRadius)
END_METADATA
} // namespace views
DEFINE_ENUM_CONVERTERS(views::Separator::Orientation,
{views::Separator::Orientation::kHorizontal,
u"kHorizontal"},
{views::Separator::Orientation::kVertical, u"kVertical"})
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