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feat: enable windows control overlay on Windows (#29600)

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* rebase "feat: enable windows control overlay on Windows"

* correct compilation error

* fix linting errors

* modify includes and build file

* change `hidden` option to `overlay`

* add patch to fix visual layout

* add button background color parameter

* add button text color parameter

* modify `overlay` in docs and modify button hover/press transition color

* change `text` to `symbol`

* remove todo and fix `text` replacement

* add new titleBarOverlay property and remove titleBarStyle `overlay`

* update browser and frameless window docs

* remove chromium patches

* chore: update patches

* change button hover color, update trailing `_`, update test file

* add dchecks, update title bar drawing checks, update test file

* modify for mac and linux builds

* update docs with overlayColor and overlaySymbolColor

* add corner and side hit test info

* modify docs and copyright info

* modify `titlebar_overlay_` as boolean or object

* move `title_bar_style_ to `NativeWindow`

* update docs with boolean and object titlebar_overlay_

* add `IsEmpty` checks

* move get options for boolean and object checks

* fix linting error

* disable `use_lld` for macos

* Update docs/api/frameless-window.md

Co-authored-by: John Kleinschmidt <jkleinsc@electronjs.org>

* Update docs/api/frameless-window.md

Co-authored-by: John Kleinschmidt <jkleinsc@electronjs.org>

* Update docs/api/frameless-window.md

Co-authored-by: John Kleinschmidt <jkleinsc@electronjs.org>

* Apply docs suggestions from code review

Co-authored-by: Jeremy Rose <jeremya@chromium.org>

* modify `true` option description `titleBarOverlay`

* ci: cleanup keychain after tests on arm64 mac (#30472)

Co-authored-by: John Kleinschmidt <jkleinsc@electronjs.org>
Co-authored-by: PatchUp <73610968+patchup[bot]@users.noreply.github.com>
Co-authored-by: Jeremy Rose <jeremya@chromium.org>
This commit is contained in:
Michaela Laurencin 2021-08-11 11:07:36 -07:00 • committed by GitHub
parent 42936b07fe
commit 41646d1168
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
26 changed files with 974 additions and 72 deletions
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10
shell/browser/ui/views/frameless_view.cc
View file

@ -85,17 +85,17 @@ int FramelessView::NonClientHitTest(const gfx::Point& cursor) {
return HTCAPTION;
}
// Support resizing frameless window by dragging the border.
int frame_component = ResizingBorderHitTest(cursor);
if (frame_component != HTNOWHERE)
return frame_component;
// Check for possible draggable region in the client area for the frameless
// window.
SkRegion* draggable_region = window_->draggable_region();
if (draggable_region && draggable_region->contains(cursor.x(), cursor.y()))
return HTCAPTION;
// Support resizing frameless window by dragging the border.
int frame_component = ResizingBorderHitTest(cursor);
if (frame_component != HTNOWHERE)
return frame_component;
return HTCLIENT;
}

2
shell/browser/ui/views/frameless_view.h
View file

@ -48,6 +48,8 @@ class FramelessView : public views::NonClientFrameView {
NativeWindowViews* window_ = nullptr;
views::Widget* frame_ = nullptr;
friend class NativeWindowsViews;
private:
DISALLOW_COPY_AND_ASSIGN(FramelessView);
};

220
shell/browser/ui/views/win_caption_button.cc Normal file
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@ -0,0 +1,220 @@
// Copyright (c) 2016 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 "shell/browser/ui/views/win_caption_button.h"
#include <utility>
#include "base/i18n/rtl.h"
#include "base/numerics/safe_conversions.h"
#include "chrome/browser/ui/frame/window_frame_util.h"
#include "chrome/grit/theme_resources.h"
#include "shell/browser/ui/views/win_frame_view.h"
#include "shell/common/color_util.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/theme_provider.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/scoped_canvas.h"
namespace electron {
WinCaptionButton::WinCaptionButton(PressedCallback callback,
WinFrameView* frame_view,
ViewID button_type,
const std::u16string& accessible_name)
: views::Button(std::move(callback)),
frame_view_(frame_view),
button_type_(button_type) {
SetAnimateOnStateChange(true);
// Not focusable by default, only for accessibility.
SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
SetAccessibleName(accessible_name);
}
gfx::Size WinCaptionButton::CalculatePreferredSize() const {
// TODO(bsep): The sizes in this function are for 1x device scale and don't
// match Windows button sizes at hidpi.
int height = WindowFrameUtil::kWindows10GlassCaptionButtonHeightRestored;
int base_width = WindowFrameUtil::kWindows10GlassCaptionButtonWidth;
return gfx::Size(base_width + GetBetweenButtonSpacing(), height);
}
void WinCaptionButton::OnPaintBackground(gfx::Canvas* canvas) {
// Paint the background of the button (the semi-transparent rectangle that
// appears when you hover or press the button).
const SkColor bg_color = frame_view_->window()->overlay_button_color();
const SkAlpha theme_alpha = SkColorGetA(bg_color);
gfx::Rect bounds = GetContentsBounds();
bounds.Inset(0, 0, 0, 0);
canvas->FillRect(bounds, SkColorSetA(bg_color, theme_alpha));
SkColor base_color;
SkAlpha hovered_alpha, pressed_alpha;
if (button_type_ == VIEW_ID_CLOSE_BUTTON) {
base_color = SkColorSetRGB(0xE8, 0x11, 0x23);
hovered_alpha = SK_AlphaOPAQUE;
pressed_alpha = 0x98;
} else {
// Match the native buttons.
base_color = frame_view_->GetReadableFeatureColor(bg_color);
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 WinCaptionButton::PaintButtonContents(gfx::Canvas* canvas) {
PaintSymbol(canvas);
}
int WinCaptionButton::GetBetweenButtonSpacing() const {
const int display_order_index = GetButtonDisplayOrderIndex();
return display_order_index == 0
? 0
: WindowFrameUtil::kWindows10GlassCaptionButtonVisualSpacing;
}
int WinCaptionButton::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();
return 0;
}
// Reverse the ordering if we're in RTL mode
if (base::i18n::IsRTL())
button_display_order = 2 - button_display_order;
return button_display_order;
}
namespace {
// Canvas::DrawRect's stroke can bleed out of |rect|'s bounds, so this draws a
// rectangle inset such that the result is constrained to |rect|'s size.
void DrawRect(gfx::Canvas* canvas,
const gfx::Rect& rect,
const cc::PaintFlags& flags) {
gfx::RectF rect_f(rect);
float stroke_half_width = flags.getStrokeWidth() / 2;
rect_f.Inset(stroke_half_width, stroke_half_width);
canvas->DrawRect(rect_f, flags);
}
} // namespace
void WinCaptionButton::PaintSymbol(gfx::Canvas* canvas) {
SkColor symbol_color = frame_view_->window()->overlay_symbol_color();
if (button_type_ == VIEW_ID_CLOSE_BUTTON &&
hover_animation().is_animating()) {
symbol_color = gfx::Tween::ColorValueBetween(
hover_animation().GetCurrentValue(), symbol_color, SK_ColorWHITE);
} else if (button_type_ == VIEW_ID_CLOSE_BUTTON &&
(GetState() == STATE_HOVERED || GetState() == STATE_PRESSED)) {
symbol_color = SK_ColorWHITE;
}
gfx::ScopedCanvas scoped_canvas(canvas);
const float scale = canvas->UndoDeviceScaleFactor();
const int symbol_size_pixels = std::round(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);
// Stroke width jumps up a pixel every time we reach a new integral scale.
const int stroke_width = std::floor(scale);
flags.setStrokeWidth(stroke_width);
switch (button_type_) {
case VIEW_ID_MINIMIZE_BUTTON: {
const int y = symbol_rect.CenterPoint().y();
const gfx::Point p1 = gfx::Point(symbol_rect.x(), y);
const gfx::Point p2 = gfx::Point(symbol_rect.right(), y);
canvas->DrawLine(p1, p2, flags);
return;
}
case VIEW_ID_MAXIMIZE_BUTTON:
DrawRect(canvas, symbol_rect, flags);
return;
case VIEW_ID_RESTORE_BUTTON: {
// Bottom left ("in front") square.
const int separation = std::floor(2 * scale);
symbol_rect.Inset(0, separation, separation, 0);
DrawRect(canvas, symbol_rect, flags);
// Top right ("behind") square.
canvas->ClipRect(symbol_rect, SkClipOp::kDifference);
symbol_rect.Offset(separation, -separation);
DrawRect(canvas, symbol_rect, flags);
return;
}
case VIEW_ID_CLOSE_BUTTON: {
flags.setAntiAlias(true);
// 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 == SK_ColorWHITE ? 0.1f : 0.05f);
flags.setStrokeWidth(stroke_width + stroke_halo);
// TODO(bsep): This sometimes draws misaligned at fractional device scales
// because the button's origin isn't necessarily aligned to pixels.
canvas->ClipRect(symbol_rect);
SkPath path;
path.moveTo(symbol_rect.x(), symbol_rect.y());
path.lineTo(symbol_rect.right(), symbol_rect.bottom());
path.moveTo(symbol_rect.right(), symbol_rect.y());
path.lineTo(symbol_rect.x(), symbol_rect.bottom());
canvas->DrawPath(path, flags);
return;
}
default:
NOTREACHED();
return;
}
}
} // namespace electron

54
shell/browser/ui/views/win_caption_button.h Normal file
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@ -0,0 +1,54 @@
// Copyright (c) 2016 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.
#ifndef SHELL_BROWSER_UI_VIEWS_WIN_CAPTION_BUTTON_H_
#define SHELL_BROWSER_UI_VIEWS_WIN_CAPTION_BUTTON_H_
#include "chrome/browser/ui/view_ids.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/gfx/canvas.h"
#include "ui/views/controls/button/button.h"
namespace electron {
class WinFrameView;
class WinCaptionButton : public views::Button {
public:
WinCaptionButton(PressedCallback callback,
WinFrameView* frame_view,
ViewID button_type,
const std::u16string& accessible_name);
WinCaptionButton(const WinCaptionButton&) = delete;
WinCaptionButton& operator=(const WinCaptionButton&) = delete;
// // views::Button:
gfx::Size CalculatePreferredSize() const override;
void OnPaintBackground(gfx::Canvas* canvas) override;
void PaintButtonContents(gfx::Canvas* canvas) override;
// private:
// Returns the amount we should visually reserve on the left (right in RTL)
// for spacing between buttons. We do this instead of repositioning the
// buttons to avoid the sliver of deadspace that would result.
int GetBetweenButtonSpacing() const;
// Returns the order in which this button will be displayed (with 0 being
// drawn farthest to the left, and larger indices being drawn to the right of
// smaller indices).
int GetButtonDisplayOrderIndex() const;
// The base color to use for the button symbols and background blending. Uses
// the more readable of black and white.
SkColor GetBaseColor() const;
// Paints the minimize/maximize/restore/close icon for the button.
void PaintSymbol(gfx::Canvas* canvas);
WinFrameView* frame_view_;
ViewID button_type_;
};
} // namespace electron
#endif // SHELL_BROWSER_UI_VIEWS_WIN_CAPTION_BUTTON_H_

143
shell/browser/ui/views/win_caption_button_container.cc Normal file
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@ -0,0 +1,143 @@
// Copyright 2020 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 "shell/browser/ui/views/win_caption_button_container.h"
#include <memory>
#include <utility>
#include "shell/browser/ui/views/win_caption_button.h"
#include "shell/browser/ui/views/win_frame_view.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/layout/flex_layout.h"
#include "ui/views/view_class_properties.h"
namespace electron {
namespace {
std::unique_ptr<WinCaptionButton> CreateCaptionButton(
views::Button::PressedCallback callback,
WinFrameView* frame_view,
ViewID button_type,
int accessible_name_resource_id) {
return std::make_unique<WinCaptionButton>(
std::move(callback), frame_view, button_type,
l10n_util::GetStringUTF16(accessible_name_resource_id));
}
bool HitTestCaptionButton(WinCaptionButton* button, const gfx::Point& point) {
return button && button->GetVisible() && button->bounds().Contains(point);
}
} // anonymous namespace
WinCaptionButtonContainer::WinCaptionButtonContainer(WinFrameView* frame_view)
: frame_view_(frame_view),
minimize_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::Minimize,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_MINIMIZE_BUTTON,
IDS_APP_ACCNAME_MINIMIZE))),
maximize_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::Maximize,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_MAXIMIZE_BUTTON,
IDS_APP_ACCNAME_MAXIMIZE))),
restore_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::Restore,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_RESTORE_BUTTON,
IDS_APP_ACCNAME_RESTORE))),
close_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::CloseWithReason,
base::Unretained(frame_view_->frame()),
views::Widget::ClosedReason::kCloseButtonClicked),
frame_view_,
VIEW_ID_CLOSE_BUTTON,
IDS_APP_ACCNAME_CLOSE))) {
// Layout is horizontal, with buttons placed at the trailing end of the view.
// This allows the container to expand to become a faux titlebar/drag handle.
auto* const layout = SetLayoutManager(std::make_unique<views::FlexLayout>());
layout->SetOrientation(views::LayoutOrientation::kHorizontal)
.SetMainAxisAlignment(views::LayoutAlignment::kEnd)
.SetCrossAxisAlignment(views::LayoutAlignment::kStart)
.SetDefault(
views::kFlexBehaviorKey,
views::FlexSpecification(views::LayoutOrientation::kHorizontal,
views::MinimumFlexSizeRule::kPreferred,
views::MaximumFlexSizeRule::kPreferred,
/* adjust_width_for_height */ false,
views::MinimumFlexSizeRule::kScaleToZero));
}
WinCaptionButtonContainer::~WinCaptionButtonContainer() {}
int WinCaptionButtonContainer::NonClientHitTest(const gfx::Point& point) const {
DCHECK(HitTestPoint(point))
<< "should only be called with a point inside this view's bounds";
if (HitTestCaptionButton(minimize_button_, point)) {
return HTMINBUTTON;
}
if (HitTestCaptionButton(maximize_button_, point)) {
return HTMAXBUTTON;
}
if (HitTestCaptionButton(restore_button_, point)) {
return HTMAXBUTTON;
}
if (HitTestCaptionButton(close_button_, point)) {
return HTCLOSE;
}
return HTCAPTION;
}
void WinCaptionButtonContainer::ResetWindowControls() {
minimize_button_->SetState(views::Button::STATE_NORMAL);
maximize_button_->SetState(views::Button::STATE_NORMAL);
restore_button_->SetState(views::Button::STATE_NORMAL);
close_button_->SetState(views::Button::STATE_NORMAL);
InvalidateLayout();
}
void WinCaptionButtonContainer::AddedToWidget() {
views::Widget* const widget = GetWidget();
DCHECK(!widget_observation_.IsObserving());
widget_observation_.Observe(widget);
UpdateButtons();
if (frame_view_->window()->IsWindowControlsOverlayEnabled()) {
SetPaintToLayer();
}
}
void WinCaptionButtonContainer::RemovedFromWidget() {
DCHECK(widget_observation_.IsObserving());
widget_observation_.Reset();
}
void WinCaptionButtonContainer::OnWidgetBoundsChanged(
views::Widget* widget,
const gfx::Rect& new_bounds) {
UpdateButtons();
}
void WinCaptionButtonContainer::UpdateButtons() {
const bool is_maximized = frame_view_->frame()->IsMaximized();
restore_button_->SetVisible(is_maximized);
maximize_button_->SetVisible(!is_maximized);
// In touch mode, windows cannot be taken out of fullscreen or tiled mode, so
// the maximize/restore button should be disabled.
const bool is_touch = ui::TouchUiController::Get()->touch_ui();
restore_button_->SetEnabled(!is_touch);
maximize_button_->SetEnabled(!is_touch);
InvalidateLayout();
}
} // namespace electron

70
shell/browser/ui/views/win_caption_button_container.h Normal file
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@ -0,0 +1,70 @@
// Copyright 2020 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.
#ifndef SHELL_BROWSER_UI_VIEWS_WIN_CAPTION_BUTTON_CONTAINER_H_
#define SHELL_BROWSER_UI_VIEWS_WIN_CAPTION_BUTTON_CONTAINER_H_
#include "base/scoped_observation.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/pointer/touch_ui_controller.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
namespace electron {
class WinFrameView;
class WinCaptionButton;
// Provides a container for Windows 10 caption buttons that can be moved between
// frame and browser window as needed. When extended horizontally, becomes a
// grab bar for moving the window.
class WinCaptionButtonContainer : public views::View,
public views::WidgetObserver {
public:
explicit WinCaptionButtonContainer(WinFrameView* frame_view);
~WinCaptionButtonContainer() override;
// Tests to see if the specified |point| (which is expressed in this view's
// coordinates and which must be within this view's bounds) is within one of
// the caption buttons. Returns one of HitTestCompat enum defined in
// ui/base/hit_test.h, HTCAPTION if the area hit would be part of the window's
// drag handle, and HTNOWHERE otherwise.
// See also ClientView::NonClientHitTest.
int NonClientHitTest(const gfx::Point& point) const;
private:
// views::View:
void AddedToWidget() override;
void RemovedFromWidget() override;
// views::WidgetObserver:
void OnWidgetBoundsChanged(views::Widget* widget,
const gfx::Rect& new_bounds) override;
void ResetWindowControls();
// Sets caption button visibility and enabled state based on window state.
// Only one of maximize or restore button should ever be visible at the same
// time, and both are disabled in tablet UI mode.
void UpdateButtons();
WinFrameView* const frame_view_;
WinCaptionButton* const minimize_button_;
WinCaptionButton* const maximize_button_;
WinCaptionButton* const restore_button_;
WinCaptionButton* const close_button_;
base::ScopedObservation<views::Widget, views::WidgetObserver>
widget_observation_{this};
base::CallbackListSubscription subscription_ =
ui::TouchUiController::Get()->RegisterCallback(
base::BindRepeating(&WinCaptionButtonContainer::UpdateButtons,
base::Unretained(this)));
};
} // namespace electron
#endif // SHELL_BROWSER_UI_VIEWS_WIN_CAPTION_BUTTON_CONTAINER_H_

220
shell/browser/ui/views/win_frame_view.cc
View file

@ -1,11 +1,24 @@
// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
//
// Portions of this file are sourced from
// chrome/browser/ui/views/frame/glass_browser_frame_view.cc,
// Copyright (c) 2012 The Chromium Authors,
// which is governed by a BSD-style license
#include "shell/browser/ui/views/win_frame_view.h"
#include <dwmapi.h>
#include <memory>
#include "base/win/windows_version.h"
#include "shell/browser/native_window_views.h"
#include "shell/browser/ui/views/win_caption_button_container.h"
#include "ui/base/win/hwnd_metrics.h"
#include "ui/display/win/dpi.h"
#include "ui/display/win/screen_win.h"
#include "ui/gfx/geometry/dip_util.h"
#include "ui/views/widget/widget.h"
#include "ui/views/win/hwnd_util.h"
@ -17,6 +30,30 @@ WinFrameView::WinFrameView() = default;
WinFrameView::~WinFrameView() = default;
void WinFrameView::Init(NativeWindowViews* window, views::Widget* frame) {
window_ = window;
frame_ = frame;
if (window->IsWindowControlsOverlayEnabled()) {
caption_button_container_ =
AddChildView(std::make_unique<WinCaptionButtonContainer>(this));
} else {
caption_button_container_ = nullptr;
}
}
SkColor WinFrameView::GetReadableFeatureColor(SkColor background_color) {
// color_utils::GetColorWithMaxContrast()/IsDark() aren't used here because
// they switch based on the Chrome light/dark endpoints, while we want to use
// the system native behavior below.
const auto windows_luma = [](SkColor c) {
return 0.25f * SkColorGetR(c) + 0.625f * SkColorGetG(c) +
0.125f * SkColorGetB(c);
};
return windows_luma(background_color) <= 128.0f ? SK_ColorWHITE
: SK_ColorBLACK;
}
gfx::Rect WinFrameView::GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const {
return views::GetWindowBoundsForClientBounds(
@ -24,15 +61,194 @@ gfx::Rect WinFrameView::GetWindowBoundsForClientBounds(
client_bounds);
}
int WinFrameView::FrameBorderThickness() const {
return (IsMaximized() || frame()->IsFullscreen())
? 0
: display::win::ScreenWin::GetSystemMetricsInDIP(SM_CXSIZEFRAME);
}
int WinFrameView::NonClientHitTest(const gfx::Point& point) {
if (window_->has_frame())
return frame_->client_view()->NonClientHitTest(point);
else
return FramelessView::NonClientHitTest(point);
if (ShouldCustomDrawSystemTitlebar()) {
// See if the point is within any of the window controls.
if (caption_button_container_) {
gfx::Point local_point = point;
ConvertPointToTarget(parent(), caption_button_container_, &local_point);
if (caption_button_container_->HitTestPoint(local_point)) {
const int hit_test_result =
caption_button_container_->NonClientHitTest(local_point);
if (hit_test_result != HTNOWHERE)
return hit_test_result;
}
}
// On Windows 8+, the caption buttons are almost butted up to the top right
// corner of the window. This code ensures the mouse isn't set to a size
// cursor while hovering over the caption buttons, thus giving the incorrect
// impression that the user can resize the window.
if (base::win::GetVersion() >= base::win::Version::WIN8) {
RECT button_bounds = {0};
if (SUCCEEDED(DwmGetWindowAttribute(
views::HWNDForWidget(frame()), DWMWA_CAPTION_BUTTON_BOUNDS,
&button_bounds, sizeof(button_bounds)))) {
gfx::RectF button_bounds_in_dips = gfx::ConvertRectToDips(
gfx::Rect(button_bounds), display::win::GetDPIScale());
// TODO(crbug.com/1131681): GetMirroredRect() requires an integer rect,
// but the size in DIPs may not be an integer with a fractional device
// scale factor. If we want to keep using integers, the choice to use
// ToFlooredRectDeprecated() seems to be doing the wrong thing given the
// comment below about insetting 1 DIP instead of 1 physical pixel. We
// should probably use ToEnclosedRect() and then we could have inset 1
// physical pixel here.
gfx::Rect buttons = GetMirroredRect(
gfx::ToFlooredRectDeprecated(button_bounds_in_dips));
// There is a small one-pixel strip right above the caption buttons in
// which the resize border "peeks" through.
constexpr int kCaptionButtonTopInset = 1;
// The sizing region at the window edge above the caption buttons is
// 1 px regardless of scale factor. If we inset by 1 before converting
// to DIPs, the precision loss might eliminate this region entirely. The
// best we can do is to inset after conversion. This guarantees we'll
// show the resize cursor when resizing is possible. The cost of which
// is also maybe showing it over the portion of the DIP that isn't the
// outermost pixel.
buttons.Inset(0, kCaptionButtonTopInset, 0, 0);
if (buttons.Contains(point))
return HTNOWHERE;
}
}
int top_border_thickness = FrameTopBorderThickness(false);
// At the window corners the resize area is not actually bigger, but the 16
// pixels at the end of the top and bottom edges trigger diagonal resizing.
constexpr int kResizeCornerWidth = 16;
int window_component = GetHTComponentForFrame(
point, gfx::Insets(top_border_thickness, 0, 0, 0), top_border_thickness,
kResizeCornerWidth - FrameBorderThickness(),
frame()->widget_delegate()->CanResize());
if (window_component != HTNOWHERE)
return window_component;
}
// Use the parent class's hittest last
return FramelessView::NonClientHitTest(point);
}
const char* WinFrameView::GetClassName() const {
return kViewClassName;
}
bool WinFrameView::IsMaximized() const {
return frame()->IsMaximized();
}
bool WinFrameView::ShouldCustomDrawSystemTitlebar() const {
return window()->IsWindowControlsOverlayEnabled();
}
void WinFrameView::Layout() {
LayoutCaptionButtons();
if (window()->IsWindowControlsOverlayEnabled()) {
LayoutWindowControlsOverlay();
}
NonClientFrameView::Layout();
}
int WinFrameView::FrameTopBorderThickness(bool restored) const {
// Mouse and touch locations are floored but GetSystemMetricsInDIP is rounded,
// so we need to floor instead or else the difference will cause the hittest
// to fail when it ought to succeed.
return std::floor(
FrameTopBorderThicknessPx(restored) /
display::win::ScreenWin::GetScaleFactorForHWND(HWNDForView(this)));
}
int WinFrameView::FrameTopBorderThicknessPx(bool restored) const {
// Distinct from FrameBorderThickness() because we can't inset the top
// border, otherwise Windows will give us a standard titlebar.
// For maximized windows this is not true, and the top border must be
// inset in order to avoid overlapping the monitor above.
// See comments in BrowserDesktopWindowTreeHostWin::GetClientAreaInsets().
const bool needs_no_border =
(ShouldCustomDrawSystemTitlebar() && frame()->IsMaximized()) ||
frame()->IsFullscreen();
if (needs_no_border && !restored)
return 0;
// Note that this method assumes an equal resize handle thickness on all
// sides of the window.
// TODO(dfried): Consider having it return a gfx::Insets object instead.
return ui::GetFrameThickness(
MonitorFromWindow(HWNDForView(this), MONITOR_DEFAULTTONEAREST));
}
int WinFrameView::TitlebarMaximizedVisualHeight() const {
int maximized_height =
display::win::ScreenWin::GetSystemMetricsInDIP(SM_CYCAPTION);
return maximized_height;
}
int WinFrameView::TitlebarHeight(bool restored) const {
if (frame()->IsFullscreen() && !restored)
return 0;
return TitlebarMaximizedVisualHeight() + FrameTopBorderThickness(false);
}
int WinFrameView::WindowTopY() const {
// The window top is SM_CYSIZEFRAME pixels when maximized (see the comment in
// FrameTopBorderThickness()) and floor(system dsf) pixels when restored.
// Unfortunately we can't represent either of those at hidpi without using
// non-integral dips, so we return the closest reasonable values instead.
if (IsMaximized())
return FrameTopBorderThickness(false);
return 1;
}
void WinFrameView::LayoutCaptionButtons() {
if (!caption_button_container_)
return;
// Non-custom system titlebar already contains caption buttons.
if (!ShouldCustomDrawSystemTitlebar()) {
caption_button_container_->SetVisible(false);
return;
}
caption_button_container_->SetVisible(true);
const gfx::Size preferred_size =
caption_button_container_->GetPreferredSize();
int height = preferred_size.height();
height = IsMaximized() ? TitlebarMaximizedVisualHeight()
: TitlebarHeight(false) - WindowTopY();
// TODO(mlaurencin): This -1 creates a 1 pixel gap between the right
// edge of the overlay and the edge of the window, allowing for this edge
// portion to return the correct hit test and be manually resized properly.
// Alternatives can be explored, but the differences in view structures
// between Electron and Chromium may result in this as the best option.
caption_button_container_->SetBounds(width() - preferred_size.width(),
WindowTopY(), preferred_size.width() - 1,
height);
}
void WinFrameView::LayoutWindowControlsOverlay() {
int overlay_height = caption_button_container_->size().height();
int overlay_width = caption_button_container_->size().width();
int bounding_rect_width = width() - overlay_width;
auto bounding_rect =
GetMirroredRect(gfx::Rect(0, 0, bounding_rect_width, overlay_height));
window()->SetWindowControlsOverlayRect(bounding_rect);
window()->NotifyLayoutWindowControlsOverlay();
}
} // namespace electron

58
shell/browser/ui/views/win_frame_view.h
View file

@ -1,11 +1,18 @@
// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
//
// Portions of this file are sourced from
// chrome/browser/ui/views/frame/glass_browser_frame_view.h,
// Copyright (c) 2012 The Chromium Authors,
// which is governed by a BSD-style license
#ifndef SHELL_BROWSER_UI_VIEWS_WIN_FRAME_VIEW_H_
#define SHELL_BROWSER_UI_VIEWS_WIN_FRAME_VIEW_H_
#include "shell/browser/native_window_views.h"
#include "shell/browser/ui/views/frameless_view.h"
#include "shell/browser/ui/views/win_caption_button.h"
namespace electron {
@ -15,6 +22,14 @@ class WinFrameView : public FramelessView {
WinFrameView();
~WinFrameView() override;
void Init(NativeWindowViews* window, views::Widget* frame) override;
// Alpha to use for features in the titlebar (the window title and caption
// buttons) when the window is inactive. They are opaque when active.
static constexpr SkAlpha kInactiveTitlebarFeatureAlpha = 0x66;
SkColor GetReadableFeatureColor(SkColor background_color);
// views::NonClientFrameView:
gfx::Rect GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const override;
@ -23,7 +38,50 @@ class WinFrameView : public FramelessView {
// views::View:
const char* GetClassName() const override;
NativeWindowViews* window() const { return window_; }
views::Widget* frame() const { return frame_; }
bool IsMaximized() const;
bool ShouldCustomDrawSystemTitlebar() const;
// Visual height of the titlebar when the window is maximized (i.e. excluding
// the area above the top of the screen).
int TitlebarMaximizedVisualHeight() const;
protected:
// views::View:
void Layout() override;
private:
friend class WinCaptionButtonContainer;
int FrameBorderThickness() const;
// Returns the thickness of the window border for the top edge of the frame,
// which is sometimes different than FrameBorderThickness(). Does not include
// the titlebar/tabstrip area. If |restored| is true, this is calculated as if
// the window was restored, regardless of its current state.
int FrameTopBorderThickness(bool restored) const;
int FrameTopBorderThicknessPx(bool restored) const;
// Returns the height of the titlebar for popups or other browser types that
// don't have tabs.
int TitlebarHeight(bool restored) const;
// Returns the y coordinate for the top of the frame, which in maximized mode
// is the top of the screen and in restored mode is 1 pixel below the top of
// the window to leave room for the visual border that Windows draws.
int WindowTopY() const;
void LayoutCaptionButtons();
void LayoutWindowControlsOverlay();
// The container holding the caption buttons (minimize, maximize, close, etc.)
// May be null if the caption button container is destroyed before the frame
// view. Always check for validity before using!
WinCaptionButtonContainer* caption_button_container_;
DISALLOW_COPY_AND_ASSIGN(WinFrameView);
};