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Nick

03/10/2023, 4:52 PM
Hey folks. I just published 0.9.1-SNAPSHOT and would love to get some feedback before a full release. You can try it out by pointing to `maven { url = uri("`https://oss.sonatype.org/content/repositories/snapshots`") }` Here's what's included so far... New PopupManager You can now present top-level Views that will cover all other existing ones in a safe and reliable way using the new
PopupManager
. Before, you could make custom popups by directly adding items to the
Display
. This worked in many cases, but had a lot of limitations. For example, Views added this way would be affected by any
Layout
on the
Display
, which meant you couldn't control these Popups as easily. Also, new Views added to the
Display
after a custom popup was shown could overlay the popup. So there was no way to guarantee that a popup remained the top-most View. The new PopupManager fixes these limitations and provides a simple API for showing popups. Any View Can Be A Popup The PopupManager's API works with
View
, so you can make anything a popup. Simply do the following:
popupManager.show(myView) {
    it.center eq parent.center
}

// ...

popupManager.hide(myView)
Views that are shown as popups will automatically become top-level (being removed from their existing parent if already displayed) and sit above all other existing Views. Hiding a popup removes it from the
Display
, but it won't return the View to a previous parent if it had one. Popup Layouts Popups are shown with layout information directly. There are two ways to show a popup: relative to the
Display
, or relative to another
View
and the
Display
. There is an API call for each: Here,
myView
is positioned with only a "reference" to the Display (parent).
popupManager.show(myView) {
    it.center eq parent.center
}
But sometimes a popup needs to be positioned relative to another View. This shows how to place
myView
so it tracks the bounds of
someView
. The PopupManager will handle keeping the popup aligned with
someView
.
// myView is positioned with only a "reference" to the Display (parent)
popupManager.show(myView, relativeTo = someView) { popup, anchor ->
    <http://popup.top|popup.top>     greaterEq 0                             // Popup top-left always visible
    popup.left    greaterEq 0                             // Popup top-left always visible
    popup.width.preserve                                  // don't shrink popup
    popup.height.preserve                                 // don't shrink popup

   (popup.right   lessEq    parent.right ) .. Strong      // stay in parent as long as doesn't compress popup
   (popup.bottom  lessEq    parent.bottom) .. Strong      // stay in parent as long as doesn't compress popup 
  
   (<http://popup.top|popup.top>     eq        anchor.bottom + 10) .. Medium // follow anchor, as long as stronger constraints not in conflict 
   (popup.centerY eq        anchor.centerY    ) .. Medium // follow anchor, as long as stronger constraints not in conflict
}
More Powerful Text Rendering Text Alignment There is a new
TextAlignment
enum that controls how wrapped text is displayed within its margins. This is a replacement for
HorizontalAlignment
, which currently uses
Left
,
Right
(instead of
Start
,
End
) and does not support
Justify
. You can justify text by doing the following:
canvas.wrapped(
  text,
  at          = Origin,
  leftMargin  = 0.0,
  rightMargin = width,
  alignment   = TextAlignment.Justify,
  fill        = Black.paint
)

canvas.wrapped(
  styledText,
  at          = Origin,
  leftMargin  = 0.0,
  rightMargin = width,
  alignment   = TextAlignment.Justify,
)
Letter, Word, And Line Spacing You can now control the way letters, words and lines are spaced when rendering text. Letter and words spacing can be provided to the text rendering methods on
Canvas
using the new
TextSpacing
class. This information can also be passed to
TextMetrics
when measuring text.
Label
also has support for both letter and word spacing. Line spacing can also be specified whenever you deal with wrapped text. APIs
Rectangle.toPath
that allows specifying each corner radius • Exposing
insets
in
simpleTextButtonRenderer
function •
repeat
and
loop
animations can now have delays •
Canvas
can now render wrapped text with custom line-spacing •
Label
now has
lineSpacing
property which controls how it displays wrapped text • Animatable Properties are no longer restricted to use within Views • New method to create
Ellipse
and
Circle
by inscribing within
Rectangle
• New
Circle.diameter
property • New constructor for
StyledText
that takes a
String
and
Style
Accessibility • Browser ◦
Button
now sets
accessibilityLabel
to its
text
if no label is already provided ◦
HyperLink
with native behavior will now apply aria-label to the anchor tag using the HyperLink's text when the
AccessibilityManager
is present Fixes | Improvements • General ◦ Bug with empty AnimationBlock when created during active animation ◦ Wrapped text not correctly aligned ◦ Bug in
FilteredList
iterator.remove ◦
CommonLabelBehavior
no longer provides an x offset for wrapped text since the alignment is handled correctly by
Canvas
◦ Edge case where layout can hang b/c of double imprecision ◦ Issue where
CommonLabelBehavior
overrides
Label.foregroundColor
on uninstall ◦ Bug where incorrect item could be removed from
RenderManagerImpl.pendingLayout
◦ Bug where some View properties lost during behavior install ◦ Bug where some views not cleaned up by
RenderManager
◦ Bug in pointer handling when
Display
transformed ◦
ToggleButton
no longer relies on being displayed to listen to its model ◦
StyledText.text
now returns correct value • Browser ◦ Misidentifying elements as native scroll panels led to incorrect pointer behavior ◦ Reuse instances for linear/radial gradient paints ◦ Reusing clipped images ◦ Hyperlinks now open in new tab ◦ Shadow render bug when using SVG ◦ Element sometimes not reused when drawing shadow ◦ Remove overflow on element w/ shadow ◦ Fixed wrapped
StyledText
rendering ◦ Wrapped
StyledText
now supports text decoration on previously unsupported cases • Desktop ◦ Fixed SVG image file loading issue ◦ Fixed rendering of images with radius ◦ Issue where font families weren't being properly tracked and therefore incorrectly applied ◦ Incorrect paragraph width measurement