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Make pinch zooming fast on retina displays

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This commit is contained in:
Tae Won Ha 2017-01-23 19:20:49 +01:00
parent 8204d935e4
commit 72eb7a42c0
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GPG Key ID: E40743465B5B8B44
1 changed files with 14 additions and 4 deletions
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18
SwiftNeoVim/NeoVimView.swift
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@ -154,7 +154,7 @@ public class NeoVimView: NSView, NeoVimUiBridgeProtocol, NSUserInterfaceValidati
fileprivate var isCurrentlyPinching = false
fileprivate var pinchTargetScale = CGFloat(1)
fileprivate var pinchImage = NSImage()
fileprivate var pinchBitmap: NSBitmapImageRep?
fileprivate var currentlyResizing = false
fileprivate var currentEmoji = "😎"
@ -451,10 +451,21 @@ extension NeoVimView {
let context = NSGraphicsContext.current()!.cgContext
if self.isCurrentlyPinching {
let interpolationQuality = context.interpolationQuality
context.interpolationQuality = .none
let boundsSize = self.bounds.size
let targetSize = CGSize(width: boundsSize.width * self.pinchTargetScale,
height: boundsSize.height * self.pinchTargetScale)
self.pinchImage.draw(in: CGRect(origin: self.bounds.origin, size: targetSize))
self.pinchBitmap?.draw(in: CGRect(origin: self.bounds.origin, size: targetSize),
from: CGRect.zero,
operation: .sourceOver,
fraction: 1,
respectFlipped: true,
hints: nil)
context.interpolationQuality = interpolationQuality
return
}
@ -1015,8 +1026,7 @@ extension NeoVimView {
case NSEventPhase.began:
let pinchImageRep = self.bitmapImageRepForCachingDisplay(in: self.bounds)!
self.cacheDisplay(in: self.bounds, to: pinchImageRep)
self.pinchImage = NSImage()
self.pinchImage.addRepresentation(pinchImageRep)
self.pinchBitmap = pinchImageRep
self.isCurrentlyPinching = true
self.needsDisplay = true