farmcontrol-ui/native/macos/window-effects.mm
Tom Butcher 274852b895
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Add macOS vibrancy support and related build scripts
- Introduced native macOS window effects with a new dynamic library for enhanced UI.
- Updated build scripts to compile the macOS effects library and integrate it into the application.
- Modified Electron context to apply macOS-specific styles and effects based on the platform.
- Enhanced CSS for macOS vibrancy support in the application layout.
- Updated configuration files to include new build steps and dependencies for macOS.
2026-08-02 02:44:24 +01:00

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#import <Cocoa/Cocoa.h>
static NSString *const kElectrobunVibrancyViewIdentifier =
@"ElectrobunVibrancyView";
static NSString *const kElectrobunNativeDragViewIdentifier =
@"ElectrobunNativeDragView";
static NSString *const kElectrobunWindowBorderViewIdentifier =
@"ElectrobunWindowBorderView";
static CGFloat gWindowCornerRadius = 15.0;
@interface ElectrobunWindowBorderView : NSView
@property(nonatomic) CGFloat cornerRadius;
@end
@implementation ElectrobunWindowBorderView
@synthesize cornerRadius = _cornerRadius;
- (instancetype)initWithFrame:(NSRect)frameRect {
self = [super initWithFrame:frameRect];
if (self) {
_cornerRadius = gWindowCornerRadius;
}
return self;
}
- (BOOL)isOpaque {
return NO;
}
- (BOOL)acceptsFirstMouse:(NSEvent *)event {
(void)event;
return NO;
}
- (NSView *)hitTest:(NSPoint)point {
(void)point;
return nil;
}
- (void)setFrame:(NSRect)frame {
[super setFrame:frame];
[self setNeedsDisplay:YES];
}
- (void)drawRect:(NSRect)dirtyRect {
(void)dirtyRect;
NSRect bounds = [self bounds];
CGFloat radius = MAX(0.0, self.cornerRadius);
NSBezierPath *borderPath = [NSBezierPath
bezierPathWithRoundedRect:NSInsetRect(bounds, 0.5, 0.5)
xRadius:radius
yRadius:radius];
if (@available(macOS 10.14, *)) {
NSAppearance *appearance = [self effectiveAppearance];
BOOL isDark =
[[appearance bestMatchFromAppearancesWithNames:@[
NSAppearanceNameAqua, NSAppearanceNameDarkAqua
]] isEqualToString:NSAppearanceNameDarkAqua];
if (isDark) {
[[NSColor colorWithWhite:1.0 alpha:0.18] setStroke];
} else {
[[NSColor colorWithWhite:1.0 alpha:0.72] setStroke];
}
} else {
[[NSColor colorWithWhite:1.0 alpha:0.72] setStroke];
}
borderPath.lineWidth = 1.0;
[borderPath stroke];
}
@end
@interface ElectrobunNativeDragView : NSView
@end
@implementation ElectrobunNativeDragView
- (BOOL)isOpaque {
return NO;
}
- (void)drawRect:(NSRect)dirtyRect {
(void)dirtyRect;
}
- (void)mouseDown:(NSEvent *)event {
NSWindow *window = [self window];
if (window != nil && event != nil) {
[window performWindowDragWithEvent:event];
}
}
@end
static NSVisualEffectView *findVibrancyView(NSView *contentView) {
for (NSView *subview in [contentView subviews]) {
if ([subview isKindOfClass:[NSVisualEffectView class]] &&
[[subview identifier]
isEqualToString:kElectrobunVibrancyViewIdentifier]) {
return (NSVisualEffectView *)subview;
}
}
return nil;
}
static ElectrobunNativeDragView *findNativeDragView(NSView *contentView) {
for (NSView *subview in [contentView subviews]) {
if ([subview isKindOfClass:[ElectrobunNativeDragView class]] &&
[[subview identifier]
isEqualToString:kElectrobunNativeDragViewIdentifier]) {
return (ElectrobunNativeDragView *)subview;
}
}
return nil;
}
static ElectrobunWindowBorderView *findWindowBorderView(NSView *contentView) {
for (NSView *subview in [contentView subviews]) {
if ([subview isKindOfClass:[ElectrobunWindowBorderView class]] &&
[[subview identifier]
isEqualToString:kElectrobunWindowBorderViewIdentifier]) {
return (ElectrobunWindowBorderView *)subview;
}
}
return nil;
}
static void applyWindowCornerRadius(NSWindow *window, CGFloat radius) {
gWindowCornerRadius = MAX(0.0, radius);
NSView *contentView = [window contentView];
if (contentView == nil) {
return;
}
contentView.wantsLayer = YES;
contentView.layer.cornerRadius = gWindowCornerRadius;
contentView.layer.masksToBounds = YES;
NSVisualEffectView *effectView = findVibrancyView(contentView);
if (effectView != nil) {
effectView.wantsLayer = YES;
effectView.layer.cornerRadius = gWindowCornerRadius;
effectView.layer.masksToBounds = YES;
}
ElectrobunWindowBorderView *borderView = findWindowBorderView(contentView);
if (borderView != nil) {
borderView.cornerRadius = gWindowCornerRadius;
[borderView setNeedsDisplay:YES];
}
}
static void ensureWindowBorder(NSWindow *window) {
NSView *contentView = [window contentView];
if (contentView == nil) {
return;
}
ElectrobunWindowBorderView *borderView = findWindowBorderView(contentView);
if (borderView == nil) {
borderView = [[ElectrobunWindowBorderView alloc]
initWithFrame:[contentView bounds]];
[borderView setIdentifier:kElectrobunWindowBorderViewIdentifier];
[borderView
setAutoresizingMask:(NSViewWidthSizable | NSViewHeightSizable)];
}
borderView.cornerRadius = gWindowCornerRadius;
[borderView setFrame:[contentView bounds]];
if ([borderView superview] == nil) {
[contentView addSubview:borderView
positioned:NSWindowAbove
relativeTo:nil];
} else {
[borderView removeFromSuperview];
[contentView addSubview:borderView
positioned:NSWindowAbove
relativeTo:nil];
}
[borderView setNeedsDisplay:YES];
}
extern "C" bool enableWindowVibrancy(void *windowPtr, double cornerRadius) {
if (windowPtr == nullptr) {
return false;
}
__block BOOL success = NO;
dispatch_sync(dispatch_get_main_queue(), ^{
NSWindow *window = (__bridge NSWindow *)windowPtr;
if (![window isKindOfClass:[NSWindow class]]) {
return;
}
applyWindowCornerRadius(window, (CGFloat)cornerRadius);
[window setOpaque:NO];
[window setBackgroundColor:[NSColor clearColor]];
[window setTitlebarAppearsTransparent:YES];
[window setHasShadow:YES];
NSView *contentView = [window contentView];
if (contentView == nil) {
return;
}
NSVisualEffectView *effectView = findVibrancyView(contentView);
if (effectView == nil) {
effectView = [[NSVisualEffectView alloc]
initWithFrame:[contentView bounds]];
[effectView setIdentifier:kElectrobunVibrancyViewIdentifier];
[effectView
setAutoresizingMask:(NSViewWidthSizable | NSViewHeightSizable)];
}
if (@available(macOS 10.14, *)) {
[effectView setMaterial:NSVisualEffectMaterialUnderWindowBackground];
} else {
[effectView setMaterial:NSVisualEffectMaterialSidebar];
}
[effectView setBlendingMode:NSVisualEffectBlendingModeBehindWindow];
[effectView setState:NSVisualEffectStateActive];
if ([effectView superview] == nil) {
NSView *relativeView = [[contentView subviews] firstObject];
if (relativeView != nil) {
[contentView addSubview:effectView
positioned:NSWindowBelow
relativeTo:relativeView];
} else {
[contentView addSubview:effectView];
}
}
ensureWindowBorder(window);
applyWindowCornerRadius(window, gWindowCornerRadius);
[window invalidateShadow];
success = YES;
});
return success;
}
extern "C" bool setWindowCornerRadius(void *windowPtr, double cornerRadius) {
if (windowPtr == nullptr) {
return false;
}
__block BOOL success = NO;
dispatch_sync(dispatch_get_main_queue(), ^{
NSWindow *window = (__bridge NSWindow *)windowPtr;
if (![window isKindOfClass:[NSWindow class]]) {
return;
}
applyWindowCornerRadius(window, (CGFloat)cornerRadius);
ensureWindowBorder(window);
[window invalidateShadow];
success = YES;
});
return success;
}
extern "C" bool ensureWindowShadow(void *windowPtr) {
if (windowPtr == nullptr) {
return false;
}
__block BOOL success = NO;
dispatch_sync(dispatch_get_main_queue(), ^{
NSWindow *window = (__bridge NSWindow *)windowPtr;
if (![window isKindOfClass:[NSWindow class]]) {
return;
}
[window setHasShadow:YES];
[window invalidateShadow];
ensureWindowBorder(window);
applyWindowCornerRadius(window, gWindowCornerRadius);
success = YES;
});
return success;
}
extern "C" bool setWindowTrafficLightsPosition(void *windowPtr, double x,
double yFromTop) {
if (windowPtr == nullptr) {
return false;
}
__block BOOL success = NO;
dispatch_sync(dispatch_get_main_queue(), ^{
NSWindow *window = (__bridge NSWindow *)windowPtr;
if (![window isKindOfClass:[NSWindow class]]) {
return;
}
NSButton *closeButton =
[window standardWindowButton:NSWindowCloseButton];
NSButton *minimizeButton =
[window standardWindowButton:NSWindowMiniaturizeButton];
NSButton *zoomButton = [window standardWindowButton:NSWindowZoomButton];
if (closeButton == nil || minimizeButton == nil || zoomButton == nil) {
return;
}
NSView *buttonContainer = [closeButton superview];
if (buttonContainer == nil) {
return;
}
CGFloat spacing = NSMinX(minimizeButton.frame) - NSMinX(closeButton.frame);
if (spacing <= 0) {
spacing = closeButton.frame.size.width + 6.0;
}
BOOL flipped = [buttonContainer isFlipped];
CGFloat targetY = yFromTop;
if (!flipped) {
targetY = buttonContainer.frame.size.height - yFromTop -
closeButton.frame.size.height;
}
targetY = MAX(0.0, targetY);
CGFloat currentX = x;
NSArray *buttons = @[ closeButton, minimizeButton, zoomButton ];
for (NSButton *button in buttons) {
[button setFrameOrigin:NSMakePoint(currentX, targetY)];
currentX += spacing;
}
[buttonContainer setNeedsLayout:YES];
[buttonContainer layoutSubtreeIfNeeded];
[window invalidateShadow];
success = YES;
});
return success;
}
extern "C" bool setNativeWindowDragRegion(void *windowPtr, double x,
double height) {
if (windowPtr == nullptr) {
return false;
}
__block BOOL success = NO;
dispatch_sync(dispatch_get_main_queue(), ^{
NSWindow *window = (__bridge NSWindow *)windowPtr;
if (![window isKindOfClass:[NSWindow class]]) {
return;
}
NSView *contentView = [window contentView];
if (contentView == nil) {
return;
}
CGFloat dragX = MAX(0.0, x);
CGFloat dragHeight = MAX(0.0, height);
CGFloat dragWidth = MAX(0.0, contentView.bounds.size.width - dragX);
if (dragHeight <= 0.0 || dragWidth <= 0.0) {
return;
}
BOOL flipped = [contentView isFlipped];
CGFloat dragY = flipped ? 0.0 : contentView.bounds.size.height - dragHeight;
dragY = MAX(0.0, dragY);
ElectrobunNativeDragView *dragView = findNativeDragView(contentView);
if (dragView == nil) {
dragView = [[ElectrobunNativeDragView alloc] initWithFrame:NSZeroRect];
[dragView setIdentifier:kElectrobunNativeDragViewIdentifier];
}
[dragView setFrame:NSMakeRect(dragX, dragY, dragWidth, dragHeight)];
[dragView setAutoresizingMask:NSViewWidthSizable];
if ([dragView superview] == nil) {
[contentView addSubview:dragView
positioned:NSWindowAbove
relativeTo:nil];
}
success = YES;
});
return success;
}