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>
1.1 KiB
1.1 KiB
293 CountUp 数字过渡
用途
数值变化时从旧值过渡到新值。
最小示例
view := func(c *ui.Context) {
core.Use(c, core.Settings{})
feedback.CountUp(c, 12840, feedback.CountUpOptions{Duration: 800 * time.Millisecond})
}
ui.Render(view, 400, 300, 1)
签名：func CountUp(c *ui.Context, value float64, opts CountUpOptions) ui.Element
参数
CountUpOptions
| 字段 | 类型 | 默认值 | 含义 |
|---|---|---|---|
| Duration | time.Duration | 0（即 120 ms） | 过渡时长；为负 panic。 |
| Decimals | int | 0 | 小数位；为负 panic。 |
| Format | func(float64) string | nil | 自定义显示，优先于 Decimals。 |
value 须为有限值。首次显示直接为目标值。
状态
- 缓出过渡，过渡中途再变化时从当前显示值继续。
- 等宽数字防止抖动；朗读最终值。
- 减少动画：直接显示新值。过渡结束或屏外隐藏后停止重绘；恢复动画设置时保持已显示的最终值。
事件
- 无。
键盘操作
- 无。
限制
- 无。