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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/hud_display/graph_page_view_base.h"
#include <utility>
#include "ash/hud_display/hud_constants.h"
#include "ash/hud_display/hud_properties.h"
#include "ash/hud_display/legend.h"
#include "ash/hud_display/reference_lines.h"
#include "ash/hud_display/solid_source_background.h"
#include "base/functional/bind.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/models/image_model.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/paint_vector_icon.h"
#include "ui/views/border.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/window/vector_icons/vector_icons.h"
namespace ash {
namespace hud_display {
namespace {
constexpr int kMinMaxButtonIconSize = 10;
constexpr int kMinMaxButtonBorder = 5;
// ImageButton with underline
class MinMaxButton : public views::ImageButton {
METADATA_HEADER(MinMaxButton, views::ImageButton)
public:
explicit MinMaxButton(views::Button::PressedCallback callback)
: views::ImageButton(std::move(callback)) {
SetBorder(views::CreateEmptyBorder(kMinMaxButtonBorder));
SetBackground(std::make_unique<SolidSourceBackground>(kHUDLegendBackground,
/*radius=*/0));
SetProperty(kHUDClickHandler, HTCLIENT);
SetFocusBehavior(views::View::FocusBehavior::ACCESSIBLE_ONLY);
}
MinMaxButton(const MinMaxButton&) = delete;
MinMaxButton& operator=(const MinMaxButton&) = delete;
~MinMaxButton() override = default;
protected:
// ImageButton
void PaintButtonContents(gfx::Canvas* canvas) override {
views::ImageButton::PaintButtonContents(canvas);
SkPath path;
path.moveTo(0, height());
path.lineTo(height(), width());
cc::PaintFlags flags;
flags.setAntiAlias(true);
flags.setBlendMode(SkBlendMode::kSrc);
flags.setStyle(cc::PaintFlags::kStroke_Style);
flags.setStrokeWidth(1);
flags.setColor(kHUDDefaultColor);
canvas->DrawPath(path, flags);
}
};
BEGIN_METADATA(MinMaxButton)
END_METADATA
void SetMinimizeIconToButton(views::ImageButton* button) {
button->SetImageModel(
views::Button::ButtonState::STATE_NORMAL,
ui::ImageModel::FromVectorIcon(views::kWindowControlMinimizeIcon,
kHUDDefaultColor, kMinMaxButtonIconSize));
}
void SetRestoreIconToButton(views::ImageButton* button) {
button->SetImageModel(
views::Button::ButtonState::STATE_NORMAL,
ui::ImageModel::FromVectorIcon(views::kWindowControlRestoreIcon,
kHUDDefaultColor, kMinMaxButtonIconSize));
}
} // namespace
BEGIN_METADATA(GraphPageViewBase)
END_METADATA
GraphPageViewBase::GraphPageViewBase() {
DCHECK_CALLED_ON_VALID_SEQUENCE(ui_sequence_checker_);
// There are two overlaid children: reference lines and legend container.
SetLayoutManager(std::make_unique<views::FillLayout>());
// |ReferenceLines| object is added after this object is fully initialized,
// but it should be located under control elements (or they will never receive
// events). This way we need to create a separate container for it.
reference_lines_container_ = AddChildView(std::make_unique<views::View>());
reference_lines_container_->SetLayoutManager(
std::make_unique<views::FillLayout>());
// Legend is floating in its own container. Invisible border of
// kLegendPositionOffset makes it float on top of the graph.
constexpr int kLegendPositionOffset = 20;
legend_container_ = AddChildView(std::make_unique<views::View>());
legend_container_
->SetLayoutManager(std::make_unique<views::BoxLayout>(
views::BoxLayout::Orientation::kVertical))
->set_cross_axis_alignment(views::BoxLayout::CrossAxisAlignment::kStart);
legend_container_->SetBorder(views::CreateEmptyBorder(kLegendPositionOffset));
legend_container_->SetVisible(false);
legend_min_max_button_ = legend_container_->AddChildView(
std::make_unique<MinMaxButton>(base::BindRepeating(
&GraphPageViewBase::OnButtonPressed, base::Unretained(this))));
legend_min_max_button_->SetTooltipText(u"Trigger graph legend");
SetMinimizeIconToButton(legend_min_max_button_);
}
GraphPageViewBase::~GraphPageViewBase() {
DCHECK_CALLED_ON_VALID_SEQUENCE(ui_sequence_checker_);
}
void GraphPageViewBase::OnButtonPressed() {
if (legend_->GetVisible()) {
legend_->SetVisible(false);
SetRestoreIconToButton(legend_min_max_button_);
} else {
legend_->SetVisible(true);
SetMinimizeIconToButton(legend_min_max_button_);
}
}
void GraphPageViewBase::CreateLegend(
const std::vector<Legend::Entry>& entries) {
DCHECK(!legend_);
legend_ = legend_container_->AddChildView(std::make_unique<Legend>(entries));
legend_container_->SetVisible(true);
}
ReferenceLines* GraphPageViewBase::CreateReferenceLines(
float left,
float top,
float right,
float bottom,
const std::u16string& x_unit,
const std::u16string& y_unit,
int horizontal_points_number,
int horizontal_ticks_interval,
float vertical_ticks_interval) {
DCHECK(reference_lines_container_->children().empty());
return reference_lines_container_->AddChildView(
std::make_unique<ReferenceLines>(
left, top, right, bottom, x_unit, y_unit, horizontal_points_number,
horizontal_ticks_interval, vertical_ticks_interval));
}
void GraphPageViewBase::RefreshLegendValues() {
if (legend_)
legend_->RefreshValues();
}
} // namespace hud_display
} // namespace ash
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