ZacharyZhang-NYandClaude Opus 5.5
bcce34cda1
MyGo v0.5.5 returns ui.Element as a checked value handle instead of a
pointer. Migrated with `mygo migrate-ui`, then fixed what the codemod
leaves to review:
- Element nil checks become .Valid(); absent elements are ui.Element{}.
- Input handlers and paint callbacks run outside the build pass, where
elements expire and Context methods are inert: read IsDisabled into a
local during the build, keep a ui.Handle for Focus, use c.Services()
for clipboard access, create ui.Local state during the build.
- Add core.AutoFocus: v0.5.5 records an overlay's opener after its
content builds, so same-frame autofocus lost focus restore on close.
It focuses one frame later; cascader rows defer their focus likewise.
- core.OverlayLayer identifies build passes by the root element, not
c.Now(), which repeats across passes and under the Tester clock.
- Context menus survive the opening press counted as PressedOutside;
split button tooltip no longer reorders its open menu; disabled
menubar rows pass presses to the panel; Form defers blur-started
async checks so the growing message no longer moves Submit away
from the release; Combobox drops its disabled copy now that MyGo
blocks typing under a disabled wrapper (canary flipped to a guard).
- The Tester clock is virtual: tests use Advance/Now instead of
time.Sleep/time.Now and read element state inside the view. The web
mirror advances the clock to wall time before each frame and input.
- AGENTS.md and docs describe the value Element API and the new pin.
Snapshot goldens are darwin-only and were not re-verified here.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
1.0 KiB
1.0 KiB
122 ChartTooltip 读数浮层
用途
在指针或键盘数据点旁显示多序列读数，自动避让窗口边缘。
最小示例
view := func(c *ui.Context) {
core.Use(c, core.Settings{})
k := core.Tokens(c)
chart.ChartTooltip(c, 40, 40, []chart.ChartTooltipLine{{Text: "Lauds"}, {Text: "Pews 5", Color: k.Info}, {Text: "Candles 2", Color: k.Success, Shape: 1}})
}
ui.Render(view, 400, 200, 1)
参数
x, y float32：窗口 DIP 坐标。lines []ChartTooltipLine 必须非空；Text 为读数，Color 为标记色，透明色隐藏标记；Shape 为标记形状。
状态
160 ms 进入过渡；减少动画直接出现。宽度和高度受窗口限制，长文字换行，内容可滚动。
事件
返回浮层 ui.Element；读数事件由所属 Chart 提供。
键盘操作
通过 Chart 使用时，方向键改变锚点，Escape 清除浮层；浮层内容沿用滚动容器操作。
限制
调用方传入当前读数和锚点，负责显示时机；所属图表应同时显示并朗读读数。