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Cache new tab button image to improve performance

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This commit is contained in:
Pete Schaffner
2024-02-09 00:06:40 +01:00
parent 7e945a52f1
commit 20ed099940
1 changed files with 29 additions and 20 deletions
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25
macos/Sources/Features/Terminal/TerminalWindow.swift
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@ -30,6 +30,7 @@ class TerminalWindow: NSWindow {
private var windowButtonsBackdrop: WindowButtonsBackdropView? = nil
private var windowDragHandle: WindowDragView? = nil
private var storedTitlebarBackgroundColor: CGColor? = nil
private var newTabButtonImage: NSImage? = nil
// The tab bar controller ID from macOS
static private let TabBarController = NSUserInterfaceItemIdentifier("_tabBarController")
@ -77,6 +78,10 @@ class TerminalWindow: NSWindow {
// titlebar tabs is used in conjunction with a transparent background.
self.restoreTitlebarBackground()
// Reset the new tab button image so that we are sure to generate a fresh
// one, tinted appropriately for the given theme.
self.newTabButtonImage = nil
// We have to wait before setting the titleVisibility or else it prevents
// the window from hiding the tab bar when we get down to a single tab.
DispatchQueue.main.async {
@ -206,26 +211,27 @@ class TerminalWindow: NSWindow {
windowButtonsBackdrop?.isHighlighted = firstTabIsSelected
}
guard let titlebarContainer = contentView?.superview?.subviews.first(where: {
$0.className == "NSTitlebarContainerView"
}) else { return }
// Color the new tab button's image to match the color of the tab title/keyboard shortcut labels,
// just as it does in the stock tab bar.
//
// One issue I haven't been able to fix is that their tint is made grey when the window isn't key,
// which doesn't look great and is made worse by the fact that the tab label colors don't change.
guard let titlebarContainer = contentView?.superview?.subviews.first(where: {
$0.className == "NSTitlebarContainerView"
}) else { return }
guard let newTabButton: NSButton = titlebarContainer.firstDescendant(withClassName: "NSTabBarNewTabButton") as? NSButton else { return }
guard let newTabButtonImageView: NSImageView = newTabButton.subviews.first(where: {
$0 as? NSImageView != nil
}) as? NSImageView else { return }
guard let newTabButtonImage = newTabButtonImageView.image,
if newTabButtonImage == nil {
guard let image = newTabButtonImageView.image,
let storedTitlebarBackgroundColor,
let titlebarBackgroundColor = NSColor(cgColor: storedTitlebarBackgroundColor) else { return }
let isLightTheme = titlebarBackgroundColor.isLightColor
let newImage = NSImage(size: newTabButtonImage.size, flipped: false) { rect in
let newImage = NSImage(size: image.size, flipped: false) { rect in
NSGraphicsContext.saveGraphicsState()
titlebarBackgroundColor.darken(by: isLightTheme ? 0.1 : 0.5).setFill()
@ -236,12 +242,15 @@ class TerminalWindow: NSWindow {
NSGraphicsContext.restoreGraphicsState()
newTabButtonImage.draw(in: rect, from: .zero, operation: .destinationAtop, fraction: 1.0)
image.draw(in: rect, from: .zero, operation: .destinationAtop, fraction: 1.0)
return true
}
newTabButtonImageView.image = newImage
newTabButtonImage = newImage
}
newTabButtonImageView.image = newTabButtonImage
}
private func addWindowButtonsBackdrop(titlebarView: NSView, toolbarView: NSView) {