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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/tabs/tab_close_button.h"
#include <map>
#include <memory>
#include <vector>
#include "base/hash/hash.h"
#include "chrome/app/vector_icons/vector_icons.h"
#include "chrome/browser/ui/layout_constants.h"
#include "chrome/browser/ui/views/tabs/tab.h"
#include "chrome/browser/ui/views/tabs/tab_slot_controller.h"
#include "components/strings/grit/components_strings.h"
#include "components/vector_icons/vector_icons.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/pointer/touch_ui_controller.h"
#include "ui/compositor/layer.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/skia_conversions.h"
#include "ui/gfx/image/image_skia_operations.h"
#include "ui/gfx/paint_vector_icon.h"
#include "ui/gfx/vector_icon_types.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/animation/ink_drop.h"
#include "ui/views/controls/focus_ring.h"
#include "ui/views/controls/highlight_path_generator.h"
#include "ui/views/layout/layout_provider.h"
#include "ui/views/rect_based_targeting_utils.h"
#include "ui/views/view_class_properties.h"
#if defined(USE_AURA)
#include "ui/aura/env.h"
#endif
namespace {
constexpr int kIconSize = 16;
constexpr gfx::Size kButtonSize = {28, 28};
} // namespace
TabCloseButton::TabCloseButton(PressedCallback pressed_callback,
MouseEventCallback mouse_event_callback)
: views::LabelButton(std::move(pressed_callback)),
mouse_event_callback_(std::move(mouse_event_callback)) {
SetEventTargeter(std::make_unique<views::ViewTargeter>(this));
GetViewAccessibility().SetName(l10n_util::GetStringUTF16(IDS_ACCNAME_CLOSE));
SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
views::InkDrop::Get(this)->SetMode(views::InkDropHost::InkDropMode::ON);
views::InkDrop::Get(this)->SetHighlightOpacity(0.16f);
views::InkDrop::Get(this)->SetVisibleOpacity(0.14f);
SetImageCentered(true);
// Disable animation so that the hover indicator shows up immediately to help
// avoid mis-clicks.
SetAnimationDuration(base::TimeDelta());
views::InkDrop::Get(this)->GetInkDrop()->SetHoverHighlightFadeDuration(
base::TimeDelta());
image_container_view()->DestroyLayer();
// The ink drop highlight path is the same as the focus ring highlight path,
// but needs to be explicitly mirrored for RTL.
// TODO(http://crbug.com/1056490): Make ink drops in RTL work the same way as
// focus rings.
auto ink_drop_highlight_path =
std::make_unique<views::CircleHighlightPathGenerator>(gfx::Insets());
ink_drop_highlight_path->set_use_contents_bounds(true);
ink_drop_highlight_path->set_use_mirrored_rect(true);
views::HighlightPathGenerator::Install(this,
std::move(ink_drop_highlight_path));
SetInstallFocusRingOnFocus(true);
// TODO(http://crbug.com/1056490): Once this bug is solved and explicit
// mirroring for ink drops is not needed, we can combine these two.
auto ring_highlight_path =
std::make_unique<views::CircleHighlightPathGenerator>(gfx::Insets());
ring_highlight_path->set_use_contents_bounds(true);
views::FocusRing::Get(this)->SetPathGenerator(std::move(ring_highlight_path));
UpdateIcon();
}
TabCloseButton::~TabCloseButton() = default;
TabStyle::TabColors TabCloseButton::GetColors() const {
return colors_;
}
void TabCloseButton::SetColors(TabStyle::TabColors colors) {
if (colors == colors_) {
return;
}
colors_ = std::move(colors);
views::InkDrop::Get(this)->SetBaseColor(
color_utils::GetColorWithMaxContrast(colors_.background_color));
views::FocusRing::Get(this)->SetColorId(
colors_.close_button_focus_ring_color);
UpdateIcon();
OnPropertyChanged(&colors_, views::kPropertyEffectsPaint);
}
views::View* TabCloseButton::GetTooltipHandlerForPoint(
const gfx::Point& point) {
// Tab close button has no children, so tooltip handler should be the same
// as the event handler. In addition, a hit test has to be performed for the
// point (as GetTooltipHandlerForPoint() is responsible for it).
if (!HitTestPoint(point)) {
return nullptr;
}
return GetEventHandlerForPoint(point);
}
bool TabCloseButton::OnMousePressed(const ui::MouseEvent& event) {
mouse_event_callback_.Run(this, event);
bool handled = LabelButton::OnMousePressed(event);
// Explicitly mark midle-mouse clicks as non-handled to ensure the tab
// sees them.
return !event.IsMiddleMouseButton() && handled;
}
void TabCloseButton::OnMouseReleased(const ui::MouseEvent& event) {
mouse_event_callback_.Run(this, event);
Button::OnMouseReleased(event);
}
void TabCloseButton::OnMouseMoved(const ui::MouseEvent& event) {
mouse_event_callback_.Run(this, event);
Button::OnMouseMoved(event);
}
void TabCloseButton::OnGestureEvent(ui::GestureEvent* event) {
// Consume all gesture events here so that the parent (Tab) does not
// start consuming gestures.
LabelButton::OnGestureEvent(event);
event->SetHandled();
}
void TabCloseButton::AddLayerToRegion(ui::Layer* new_layer,
views::LayerRegion region) {
image_container_view()->SetPaintToLayer();
image_container_view()->layer()->SetFillsBoundsOpaquely(false);
ink_drop_container()->SetVisible(true);
ink_drop_container()->AddLayerToRegion(new_layer, region);
}
void TabCloseButton::RemoveLayerFromRegions(ui::Layer* old_layer) {
ink_drop_container()->RemoveLayerFromRegions(old_layer);
ink_drop_container()->SetVisible(false);
image_container_view()->DestroyLayer();
}
gfx::Size TabCloseButton::CalculatePreferredSize(
const views::SizeBounds& available_size) const {
return kButtonSize;
}
views::View* TabCloseButton::TargetForRect(views::View* root,
const gfx::Rect& rect) {
CHECK_EQ(root, this);
if (!views::UsePointBasedTargeting(rect)) {
return ViewTargeterDelegate::TargetForRect(root, rect);
}
// Ignore the padding set on the button.
gfx::Rect contents_bounds = GetMirroredRect(GetContentsBounds());
#if defined(USE_AURA)
// Include the padding in hit-test for touch events.
// TODO(pkasting): It seems like touch events would generate rects rather
// than points and thus use the TargetForRect() call above. If this is
// reached, it may be from someone calling GetEventHandlerForPoint() while a
// touch happens to be occurring. In such a case, maybe we don't want this
// code to run? It's possible this block should be removed, or maybe this
// whole function deleted. Note that in these cases, we should probably
// also remove the padding on the close button bounds (see Tab::Layout()), as
// it will be pointless.
if (aura::Env::GetInstance()->is_touch_down()) {
contents_bounds = GetLocalBounds();
}
#endif
return contents_bounds.Intersects(rect) ? this : parent();
}
bool TabCloseButton::GetHitTestMask(SkPath* mask) const {
// We need to define this so hit-testing won't include the border region.
mask->addRect(gfx::RectToSkRect(GetMirroredRect(GetContentsBounds())));
return true;
}
void TabCloseButton::UpdateIcon() {
const auto& icon = kCloseTabChromeRefreshIcon;
SetImageModel(views::Button::STATE_NORMAL,
ui::ImageModel::FromVectorIcon(icon, colors_.foreground_color,
kIconSize));
SetImageModel(views::Button::STATE_HOVERED,
ui::ImageModel::FromVectorIcon(icon, colors_.foreground_color,
kIconSize));
SetImageModel(views::Button::STATE_PRESSED,
ui::ImageModel::FromVectorIcon(icon, colors_.foreground_color,
kIconSize));
}
BEGIN_METADATA(TabCloseButton)
ADD_PROPERTY_METADATA(TabStyle::TabColors, Colors)
END_METADATA
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