def apply_round_clipping(image_view_impl: ImageView) -> None:
"""Clips an image in a given toga_cocoa.ImageView to a circular mask."""
image = image_view_impl.native.image # get native NSImage
composed_image = NSImage.alloc().initWithSize(image.size)
composed_image.lockFocus()
ctx = NSGraphicsContext.currentContext
ctx.saveGraphicsState()
ctx.imageInterpolation = NSImageInterpolationHigh
image_frame = NSRect(NSPoint(0, 0), image.size)
clip_path = NSBezierPath.bezierPathWithRoundedRect(
image_frame,
xRadius=image.size.width / 2,
yRadius=image.size.height / 2)
clip_path.addClip()
zero_rect = NSRect(NSPoint(0, 0), NSMakeSize(0, 0))
image.drawInRect(image_frame,
fromRect=zero_rect,
operation=NSCompositeSourceOver,
fraction=1)
composed_image.unlockFocus()
ctx.restoreGraphicsState()
image_view_impl.native.image = composed_image
def drawWithFrame_inView_(self, cellFrame: NSRect, view) -> None:
# The data to display.
try:
label = self.objectValue.attrs['label']
icon = self.objectValue.attrs['icon']
except AttributeError:
# Value is a simple string.
label = self.objectValue
icon = None
if icon and icon.native:
offset = 28.5
NSGraphicsContext.currentContext.saveGraphicsState()
yOffset = cellFrame.origin.y
if view.isFlipped:
xform = NSAffineTransform.transform()
xform.translateXBy(8, yBy=cellFrame.size.height)
xform.scaleXBy(1.0, yBy=-1.0)
xform.concat()
yOffset = 0.5 - cellFrame.origin.y
interpolation = NSGraphicsContext.currentContext.imageInterpolation
NSGraphicsContext.currentContext.imageInterpolation = NSImageInterpolationHigh
icon.native.drawInRect(NSRect(NSPoint(cellFrame.origin.x, yOffset),
NSSize(16.0, 16.0)),
fromRect=NSRect(
NSPoint(0, 0),
NSSize(icon.native.size.width,
icon.native.size.height)),
operation=NSCompositingOperationSourceOver,
fraction=1.0)
NSGraphicsContext.currentContext.imageInterpolation = interpolation
NSGraphicsContext.currentContext.restoreGraphicsState()
else:
# No icon; just the text label
offset = 5
if label:
# Find the right color for the text
if self.isHighlighted():
primaryColor = NSColor.alternateSelectedControlTextColor
else:
if False:
primaryColor = NSColor.disabledControlTextColor
else:
primaryColor = NSColor.textColor
textAttributes = NSMutableDictionary.alloc().init()
textAttributes[NSForegroundColorAttributeName] = primaryColor
textAttributes[NSFontAttributeName] = NSFont.systemFontOfSize(13)
at(label).drawAtPoint(NSPoint(cellFrame.origin.x + offset,
cellFrame.origin.y),
withAttributes=textAttributes)
def drawInteriorWithFrame_inView_(self, cellFrame: NSRect, view) -> None:
# The data to display.
icon = self.objectValue.attrs['icon']
title = self.objectValue.attrs['title']
subtitle = self.objectValue.attrs['subtitle']
if icon and icon.native:
NSGraphicsContext.currentContext.saveGraphicsState()
yOffset = cellFrame.origin.y
if view.isFlipped:
xform = NSAffineTransform.transform()
xform.translateXBy(4, yBy=cellFrame.size.height)
xform.scaleXBy(1.0, yBy=-1.0)
xform.concat()
yOffset = 0.5 - cellFrame.origin.y
interpolation = NSGraphicsContext.currentContext.imageInterpolation
NSGraphicsContext.currentContext.imageInterpolation = NSImageInterpolationHigh
icon.native.drawInRect(NSRect(
NSPoint(cellFrame.origin.x, yOffset + 4), NSSize(40.0, 40.0)),
fromRect=NSRect(
NSPoint(0, 0),
NSSize(icon.native.size.width,
icon.native.size.height)),
operation=NSCompositingOperationSourceOver,
fraction=1.0)
NSGraphicsContext.currentContext.imageInterpolation = interpolation
NSGraphicsContext.currentContext.restoreGraphicsState()
else:
path = NSBezierPath.bezierPathWithRect(
NSRect(NSPoint(cellFrame.origin.x, cellFrame.origin.y + 4),
NSSize(40.0, 40.0)))
NSColor.grayColor.set()
path.fill()
if title:
# Find the right color for the text
if self.isHighlighted():
primaryColor = NSColor.alternateSelectedControlTextColor
else:
if False:
primaryColor = NSColor.disabledControlTextColor
else:
primaryColor = NSColor.textColor
textAttributes = NSMutableDictionary.alloc().init()
textAttributes[NSForegroundColorAttributeName] = primaryColor
textAttributes[NSFontAttributeName] = NSFont.systemFontOfSize(15)
at(title).drawAtPoint(NSPoint(cellFrame.origin.x + 48,
cellFrame.origin.y + 4),
withAttributes=textAttributes)
if subtitle:
# Find the right color for the text
if self.isHighlighted():
primaryColor = NSColor.alternateSelectedControlTextColor
else:
if False:
primaryColor = NSColor.disabledControlTextColor
else:
primaryColor = NSColor.textColor
textAttributes = NSMutableDictionary.alloc().init()
textAttributes[NSForegroundColorAttributeName] = primaryColor
textAttributes[NSFontAttributeName] = NSFont.systemFontOfSize(13)
at(subtitle).drawAtPoint(NSPoint(cellFrame.origin.x + 48,
cellFrame.origin.y + 24),
withAttributes=textAttributes)