// Copyright 2016 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/frame/windows_caption_button.h"
#include <memory>
#include "base/numerics/safe_conversions.h"
#include "base/win/windows_version.h"
#include "chrome/browser/themes/theme_properties.h"
#include "chrome/browser/ui/color/chrome_color_id.h"
#include "chrome/browser/ui/frame/window_frame_util.h"
#include "chrome/browser/ui/layout_constants.h"
#include "chrome/browser/ui/views/frame/browser_frame_view_win.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/views/frame/tab_strip_region_view.h"
#include "chrome/grit/theme_resources.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/theme_provider.h"
#include "ui/base/ui_base_features.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/geometry/skia_conversions.h"
#include "ui/gfx/scoped_canvas.h"
WindowsCaptionButton::WindowsCaptionButton(
PressedCallback callback,
BrowserFrameViewWin* frame_view,
ViewID button_type,
const std::u16string& accessible_name)
: views::Button(std::move(callback)),
frame_view_(frame_view),
icon_painter_(CreateIconPainter()),
button_type_(button_type) {
SetAnimateOnStateChange(true);
// Not focusable by default, only for accessibility.
SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
GetViewAccessibility().SetName(accessible_name);
SetID(button_type);
}
WindowsCaptionButton::~WindowsCaptionButton() = default;
std::unique_ptr<Windows10IconPainter>
WindowsCaptionButton::CreateIconPainter() {
if (base::win::GetVersion() >= base::win::Version::WIN11) {
return std::make_unique<Windows11IconPainter>();
}
return std::make_unique<Windows10IconPainter>();
}
gfx::Size WindowsCaptionButton::CalculatePreferredSize(
const views::SizeBounds& available_size) const {
const int width =
WindowFrameUtil::kWindowsCaptionButtonWidth + GetBetweenButtonSpacing();
// TODO(bsep): The sizes in this function are for 1x device scale and don't
// match Windows button sizes at hidpi.
int height = WindowFrameUtil::kWindowsCaptionButtonHeightRestored;
if (!frame_view_->browser_view()->webui_tab_strip() &&
frame_view_->IsMaximized()) {
int maximized_height =
frame_view_->browser_view()->ShouldDrawTabStrip()
? frame_view_->browser_view()->GetTabStripHeight()
: frame_view_->TitlebarMaximizedVisualHeight();
constexpr int kMaximizedBottomMargin = 2;
maximized_height -= kMaximizedBottomMargin;
height = std::min(height, maximized_height);
}
return gfx::Size(width, height);
}
SkColor WindowsCaptionButton::GetBaseForegroundColor() const {
return GetColorProvider()->GetColor(
frame_view_->ShouldPaintAsActive()
? kColorCaptionButtonForegroundActive
: kColorCaptionButtonForegroundInactive);
}
void WindowsCaptionButton::OnPaintBackground(gfx::Canvas* canvas) {
// Paint the background of the button (the semi-transparent rectangle that
// appears when you hover or press the button).
const ui::ThemeProvider* theme_provider = GetThemeProvider();
const SkColor bg_color =
GetColorProvider()->GetColor(kColorCaptionButtonBackground);
const SkAlpha theme_alpha = SkColorGetA(bg_color);
gfx::Rect bounds = GetContentsBounds();
bounds.Inset(gfx::Insets::TLBR(0, GetBetweenButtonSpacing(), 0, 0));
if (theme_alpha > 0) {
canvas->FillRect(
bounds,
SkColorSetA(
bg_color,
WindowFrameUtil::CalculateWindowsCaptionButtonBackgroundAlpha(
theme_alpha)));
}
if (theme_provider->HasCustomImage(IDR_THEME_WINDOW_CONTROL_BACKGROUND)) {
// Figure out what portion of the background image to display
const int button_display_order = GetButtonDisplayOrderIndex();
const int base_button_width = WindowFrameUtil::kWindowsCaptionButtonWidth;
const int base_visual_spacing =
WindowFrameUtil::kWindowsCaptionButtonVisualSpacing;
const int src_x =
button_display_order * (base_button_width + base_visual_spacing);
const int src_y = 0;
canvas->TileImageInt(
*theme_provider->GetImageSkiaNamed(IDR_THEME_WINDOW_CONTROL_BACKGROUND),
src_x, src_y, bounds.x(), bounds.y(), bounds.width(), bounds.height());
}
SkColor base_color;
SkAlpha hovered_alpha, pressed_alpha;
if (button_type_ == VIEW_ID_CLOSE_BUTTON) {
base_color =
GetColorProvider()->GetColor(kColorCaptionCloseButtonBackgroundHovered);
hovered_alpha = SK_AlphaOPAQUE;
pressed_alpha = 0x98;
} else {
// Match the native buttons.
base_color = GetBaseForegroundColor();
hovered_alpha = 0x1A;
pressed_alpha = 0x33;
if (theme_alpha > 0) {
// Theme buttons have slightly increased opacity to make them stand out
// against a visually-busy frame image.
constexpr float kAlphaScale = 1.3f;
hovered_alpha = base::ClampRound<SkAlpha>(hovered_alpha * kAlphaScale);
pressed_alpha = base::ClampRound<SkAlpha>(pressed_alpha * kAlphaScale);
}
}
SkAlpha alpha;
if (GetState() == STATE_PRESSED)
alpha = pressed_alpha;
else
alpha = gfx::Tween::IntValueBetween(hover_animation().GetCurrentValue(),
SK_AlphaTRANSPARENT, hovered_alpha);
canvas->FillRect(bounds, SkColorSetA(base_color, alpha));
}
void WindowsCaptionButton::PaintButtonContents(gfx::Canvas* canvas) {
PaintSymbol(canvas);
}
int WindowsCaptionButton::GetBetweenButtonSpacing() const {
const int display_order_index = GetButtonDisplayOrderIndex();
return display_order_index == 0
? 0
: WindowFrameUtil::kWindowsCaptionButtonVisualSpacing;
}
int WindowsCaptionButton::GetButtonDisplayOrderIndex() const {
int button_display_order = 0;
switch (button_type_) {
case VIEW_ID_MINIMIZE_BUTTON:
button_display_order = 0;
break;
case VIEW_ID_MAXIMIZE_BUTTON:
case VIEW_ID_RESTORE_BUTTON:
button_display_order = 1;
break;
case VIEW_ID_CLOSE_BUTTON:
button_display_order = 2;
break;
default:
NOTREACHED();
}
// Reverse the ordering if we're in RTL mode
if (base::i18n::IsRTL()) {
const int max_index = 2;
button_display_order = max_index - button_display_order;
}
return button_display_order;
}
void WindowsCaptionButton::PaintSymbol(gfx::Canvas* canvas) {
SkColor symbol_color = GetBaseForegroundColor();
const SkColor hovered_color =
GetColorProvider()->GetColor(kColorCaptionCloseButtonForegroundHovered);
if (!GetEnabled() ||
(!frame_view_->ShouldPaintAsActive() && GetState() != STATE_HOVERED &&
GetState() != STATE_PRESSED)) {
symbol_color =
SkColorSetA(symbol_color, SkColorGetA(GetColorProvider()->GetColor(
kColorCaptionForegroundInactive)));
} else if (button_type_ == VIEW_ID_CLOSE_BUTTON &&
hover_animation().is_animating()) {
symbol_color = gfx::Tween::ColorValueBetween(
hover_animation().GetCurrentValue(), symbol_color, hovered_color);
} else if (button_type_ == VIEW_ID_CLOSE_BUTTON &&
(GetState() == STATE_HOVERED || GetState() == STATE_PRESSED)) {
symbol_color = hovered_color;
}
gfx::ScopedCanvas scoped_canvas(canvas);
const float scale = canvas->UndoDeviceScaleFactor();
const int symbol_size_pixels = base::ClampRound(10 * scale);
gfx::RectF bounds_rect(GetContentsBounds());
bounds_rect.Scale(scale);
gfx::Rect symbol_rect(gfx::ToEnclosingRect(bounds_rect));
symbol_rect.ClampToCenteredSize(
gfx::Size(symbol_size_pixels, symbol_size_pixels));
cc::PaintFlags flags;
flags.setAntiAlias(false);
flags.setColor(symbol_color);
flags.setStyle(cc::PaintFlags::kStroke_Style);
const int stroke_width = base::ClampRound(scale);
flags.setStrokeWidth(stroke_width);
switch (button_type_) {
case VIEW_ID_MINIMIZE_BUTTON:
icon_painter_->PaintMinimizeIcon(canvas, symbol_rect, flags);
return;
case VIEW_ID_MAXIMIZE_BUTTON:
icon_painter_->PaintMaximizeIcon(canvas, symbol_rect, flags);
return;
case VIEW_ID_RESTORE_BUTTON:
icon_painter_->PaintRestoreIcon(canvas, symbol_rect, flags);
return;
case VIEW_ID_CLOSE_BUTTON: {
// The close button's X is surrounded by a "halo" of transparent pixels.
// When the X is white, the transparent pixels need to be a bit brighter
// to be visible.
const float stroke_halo =
stroke_width * (symbol_color == hovered_color ? 0.1f : 0.05f);
flags.setStrokeWidth(stroke_width + stroke_halo);
icon_painter_->PaintCloseIcon(canvas, symbol_rect, flags);
return;
}
default:
NOTREACHED();
}
}
BEGIN_METADATA(WindowsCaptionButton)
ADD_READONLY_PROPERTY_METADATA(int, BetweenButtonSpacing)
ADD_READONLY_PROPERTY_METADATA(int, ButtonDisplayOrderIndex)
ADD_READONLY_PROPERTY_METADATA(SkColor,
BaseForegroundColor,
ui::metadata::SkColorConverter)
END_METADATA
Codebase Browser
chromium