/
atom_ns_window_delegate.mm
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atom_ns_window_delegate.mm
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// Copyright (c) 2018 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/browser/ui/cocoa/atom_ns_window_delegate.h"
#include "atom/browser/browser.h"
#include "atom/browser/native_window_mac.h"
#include "atom/browser/ui/cocoa/atom_preview_item.h"
#include "atom/browser/ui/cocoa/atom_touch_bar.h"
#include "base/mac/mac_util.h"
#include "ui/views/cocoa/bridged_native_widget.h"
#include "ui/views/widget/native_widget_mac.h"
@implementation AtomNSWindowDelegate
- (id)initWithShell:(atom::NativeWindowMac*)shell {
// The views library assumes the window delegate must be an instance of
// ViewsNSWindowDelegate, since we don't have a way to override the creation
// of NSWindowDelegate, we have to dynamically replace the window delegate
// on the fly.
// TODO(zcbenz): Add interface in NativeWidgetMac to allow overriding creating
// window delegate.
views::BridgedNativeWidget* bridged_view =
views::NativeWidgetMac::GetBridgeForNativeWindow(
shell->GetNativeWindow());
if ((self = [super initWithBridgedNativeWidget:bridged_view])) {
shell_ = shell;
is_zooming_ = false;
level_ = [shell_->GetNativeWindow() level];
}
return self;
}
#pragma mark - NSWindowDelegate
- (void)windowDidChangeOcclusionState:(NSNotification*)notification {
// notification.object is the window that changed its state.
// It's safe to use self.window instead if you don't assign one delegate to
// many windows
NSWindow* window = notification.object;
// check occlusion binary flag
if (window.occlusionState & NSWindowOcclusionStateVisible) {
// The app is visible
shell_->NotifyWindowShow();
} else {
// The app is not visible
shell_->NotifyWindowHide();
}
}
// Called when the user clicks the zoom button or selects it from the Window
// menu to determine the "standard size" of the window.
- (NSRect)windowWillUseStandardFrame:(NSWindow*)window
defaultFrame:(NSRect)frame {
if (!shell_->zoom_to_page_width())
return frame;
// If the shift key is down, maximize.
if ([[NSApp currentEvent] modifierFlags] & NSShiftKeyMask)
return frame;
// Get preferred width from observers. Usually the page width.
int preferred_width = 0;
shell_->NotifyWindowRequestPreferredWith(&preferred_width);
// Never shrink from the current size on zoom.
NSRect window_frame = [window frame];
CGFloat zoomed_width =
std::max(static_cast<CGFloat>(preferred_width), NSWidth(window_frame));
// |frame| determines our maximum extents. We need to set the origin of the
// frame -- and only move it left if necessary.
if (window_frame.origin.x + zoomed_width > NSMaxX(frame))
frame.origin.x = NSMaxX(frame) - zoomed_width;
else
frame.origin.x = window_frame.origin.x;
// Set the width. Don't touch y or height.
frame.size.width = zoomed_width;
return frame;
}
- (void)windowDidBecomeKey:(NSNotification*)notification {
shell_->NotifyWindowFocus();
}
- (void)windowDidResignKey:(NSNotification*)notification {
shell_->NotifyWindowBlur();
}
- (NSSize)windowWillResize:(NSWindow*)sender toSize:(NSSize)frameSize {
NSSize newSize = frameSize;
double aspectRatio = shell_->GetAspectRatio();
if (aspectRatio > 0.0) {
gfx::Size windowSize = shell_->GetSize();
gfx::Size contentSize = shell_->GetContentSize();
gfx::Size extraSize = shell_->GetAspectRatioExtraSize();
double extraWidthPlusFrame =
windowSize.width() - contentSize.width() + extraSize.width();
double extraHeightPlusFrame =
windowSize.height() - contentSize.height() + extraSize.height();
newSize.width =
roundf((frameSize.height - extraHeightPlusFrame) * aspectRatio +
extraWidthPlusFrame);
newSize.height =
roundf((newSize.width - extraWidthPlusFrame) / aspectRatio +
extraHeightPlusFrame);
}
{
bool prevent_default = false;
gfx::Rect new_bounds(gfx::Point(sender.frame.origin), gfx::Size(newSize));
shell_->NotifyWindowWillResize(new_bounds, &prevent_default);
if (prevent_default) {
return sender.frame.size;
}
}
return newSize;
}
- (void)windowDidResize:(NSNotification*)notification {
[super windowDidResize:notification];
shell_->NotifyWindowResize();
}
- (void)windowDidMove:(NSNotification*)notification {
[super windowDidMove:notification];
// TODO(zcbenz): Remove the alias after figuring out a proper
// way to dispatch move.
shell_->NotifyWindowMove();
shell_->NotifyWindowMoved();
}
- (void)windowWillMiniaturize:(NSNotification*)notification {
NSWindow* window = shell_->GetNativeWindow();
// store the current status window level to be restored in
// windowDidDeminiaturize
level_ = [window level];
[window setLevel:NSNormalWindowLevel];
}
- (void)windowDidMiniaturize:(NSNotification*)notification {
[super windowDidMiniaturize:notification];
shell_->NotifyWindowMinimize();
}
- (void)windowDidDeminiaturize:(NSNotification*)notification {
[super windowDidDeminiaturize:notification];
[shell_->GetNativeWindow() setLevel:level_];
shell_->NotifyWindowRestore();
}
- (BOOL)windowShouldZoom:(NSWindow*)window toFrame:(NSRect)newFrame {
is_zooming_ = true;
return YES;
}
- (void)windowDidEndLiveResize:(NSNotification*)notification {
if (is_zooming_) {
if (shell_->IsMaximized())
shell_->NotifyWindowMaximize();
else
shell_->NotifyWindowUnmaximize();
is_zooming_ = false;
}
}
- (void)windowWillEnterFullScreen:(NSNotification*)notification {
// Setting resizable to true before entering fullscreen
is_resizable_ = shell_->IsResizable();
shell_->SetResizable(true);
// Hide the native toolbar before entering fullscreen, so there is no visual
// artifacts.
if (@available(macOS 10.10, *)) {
if (shell_->title_bar_style() == atom::NativeWindowMac::HIDDEN_INSET) {
NSWindow* window = shell_->GetNativeWindow();
[window setToolbar:nil];
}
}
}
- (void)windowDidEnterFullScreen:(NSNotification*)notification {
shell_->NotifyWindowEnterFullScreen();
if (@available(macOS 10.10, *)) {
// For frameless window we don't show set title for normal mode since the
// titlebar is expected to be empty, but after entering fullscreen mode we
// have to set one, because title bar is visible here.
NSWindow* window = shell_->GetNativeWindow();
if ((shell_->transparent() || !shell_->has_frame()) &&
// FIXME(zcbenz): Showing titlebar for hiddenInset window is weird under
// fullscreen mode.
// Show title if fullscreen_window_title flag is set
(shell_->title_bar_style() != atom::NativeWindowMac::HIDDEN_INSET ||
shell_->fullscreen_window_title())) {
[window setTitleVisibility:NSWindowTitleVisible];
}
// Restore the native toolbar immediately after entering fullscreen, if we
// do this before leaving fullscreen, traffic light buttons will be jumping.
if (shell_->title_bar_style() == atom::NativeWindowMac::HIDDEN_INSET) {
base::scoped_nsobject<NSToolbar> toolbar(
[[NSToolbar alloc] initWithIdentifier:@"titlebarStylingToolbar"]);
[toolbar setShowsBaselineSeparator:NO];
[window setToolbar:toolbar];
// Set window style to hide the toolbar, otherwise the toolbar will show
// in fullscreen mode.
[window setTitlebarAppearsTransparent:NO];
shell_->SetStyleMask(true, NSWindowStyleMaskFullSizeContentView);
}
}
}
- (void)windowWillExitFullScreen:(NSNotification*)notification {
if (@available(macOS 10.10, *)) {
// Restore the titlebar visibility.
NSWindow* window = shell_->GetNativeWindow();
if ((shell_->transparent() || !shell_->has_frame()) &&
(shell_->title_bar_style() != atom::NativeWindowMac::HIDDEN_INSET ||
shell_->fullscreen_window_title())) {
[window setTitleVisibility:NSWindowTitleHidden];
}
// Turn off the style for toolbar.
if (shell_->title_bar_style() == atom::NativeWindowMac::HIDDEN_INSET) {
shell_->SetStyleMask(false, NSWindowStyleMaskFullSizeContentView);
}
}
}
- (void)windowDidExitFullScreen:(NSNotification*)notification {
shell_->SetResizable(is_resizable_);
shell_->NotifyWindowLeaveFullScreen();
}
- (void)windowWillClose:(NSNotification*)notification {
shell_->NotifyWindowClosed();
// Clears the delegate when window is going to be closed, since EL Capitan it
// is possible that the methods of delegate would get called after the window
// has been closed.
views::BridgedNativeWidget* bridged_view =
views::NativeWidgetMac::GetBridgeForNativeWindow(
shell_->GetNativeWindow());
bridged_view->OnWindowWillClose();
}
- (BOOL)windowShouldClose:(id)window {
shell_->NotifyWindowCloseButtonClicked();
return NO;
}
- (NSRect)window:(NSWindow*)window
willPositionSheet:(NSWindow*)sheet
usingRect:(NSRect)rect {
NSView* view = window.contentView;
rect.origin.x = shell_->GetSheetOffsetX();
rect.origin.y = view.frame.size.height - shell_->GetSheetOffsetY();
return rect;
}
- (void)windowWillBeginSheet:(NSNotification*)notification {
shell_->NotifyWindowSheetBegin();
}
- (void)windowDidEndSheet:(NSNotification*)notification {
shell_->NotifyWindowSheetEnd();
}
- (IBAction)newWindowForTab:(id)sender {
shell_->NotifyNewWindowForTab();
atom::Browser::Get()->NewWindowForTab();
}
#pragma mark - NSTouchBarDelegate
- (NSTouchBarItem*)touchBar:(NSTouchBar*)touchBar
makeItemForIdentifier:(NSTouchBarItemIdentifier)identifier
API_AVAILABLE(macosx(10.12.2)) {
if (touchBar && shell_->touch_bar())
return [shell_->touch_bar() makeItemForIdentifier:identifier];
else
return nil;
}
#pragma mark - QLPreviewPanelDataSource
- (NSInteger)numberOfPreviewItemsInPreviewPanel:(QLPreviewPanel*)panel {
return 1;
}
- (id<QLPreviewItem>)previewPanel:(QLPreviewPanel*)panel
previewItemAtIndex:(NSInteger)index {
return shell_->preview_item();
}
@end