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focusable_border.cc
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focusable_border.cc
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// 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/views/controls/focusable_border.h"
#include "cc/paint/paint_flags.h"
#include "third_party/skia/include/core/SkPath.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/color_palette.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/scoped_canvas.h"
#include "ui/gfx/skia_util.h"
#include "ui/native_theme/native_theme.h"
#include "ui/views/controls/textfield/textfield.h"
namespace {
constexpr int kInsetSize = 1;
} // namespace
namespace views {
FocusableBorder::FocusableBorder() : insets_(kInsetSize) {}
FocusableBorder::~FocusableBorder() = default;
void FocusableBorder::SetColorId(
const absl::optional<ui::NativeTheme::ColorId>& color_id) {
override_color_id_ = color_id;
}
void FocusableBorder::Paint(const View& view, gfx::Canvas* canvas) {
cc::PaintFlags flags;
flags.setStyle(cc::PaintFlags::kStroke_Style);
flags.setColor(GetCurrentColor(view));
gfx::ScopedCanvas scoped(canvas);
float dsf = canvas->UndoDeviceScaleFactor();
constexpr int kStrokeWidthPx = 1;
flags.setStrokeWidth(SkIntToScalar(kStrokeWidthPx));
// Scale the rect and snap to pixel boundaries.
gfx::RectF rect(gfx::ScaleToEnclosedRect(view.GetLocalBounds(), dsf));
rect.Inset(gfx::InsetsF(kStrokeWidthPx / 2.0f));
SkPath path;
flags.setAntiAlias(true);
float corner_radius_px = kCornerRadiusDp * dsf;
path.addRoundRect(gfx::RectFToSkRect(rect), corner_radius_px,
corner_radius_px);
canvas->DrawPath(path, flags);
}
gfx::Insets FocusableBorder::GetInsets() const {
return insets_;
}
gfx::Size FocusableBorder::GetMinimumSize() const {
return gfx::Size();
}
void FocusableBorder::SetInsets(int top, int left, int bottom, int right) {
insets_.Set(top, left, bottom, right);
}
void FocusableBorder::SetInsets(int vertical, int horizontal) {
SetInsets(vertical, horizontal, vertical, horizontal);
}
SkColor FocusableBorder::GetCurrentColor(const View& view) const {
ui::NativeTheme::ColorId color_id =
ui::NativeTheme::kColorId_UnfocusedBorderColor;
if (override_color_id_)
color_id = *override_color_id_;
SkColor color = view.GetNativeTheme()->GetSystemColor(color_id);
return view.GetEnabled() ? color
: color_utils::BlendTowardMaxContrast(
color, gfx::kDisabledControlAlpha);
}
} // namespace views