first commit

internal/ui/card.go

@@ -0,0 +1,127 @@
+package ui
+
+import (
+	"strings"
+	"time"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/widget"
+
+	"viewsagent/internal/capture"
+	"viewsagent/internal/win32"
+)
+
+// cardTitle 是答案浮窗的标题，win32 靠它找 HWND。
+const cardTitle = "viewsagent-card"
+
+// floatCard 是贴在选区旁边的置顶小窗，只显示最新答案。
+type floatCard struct {
+	win     fyne.Window
+	body    *widget.RichText
+	region  capture.Region
+	visible bool
+}
+
+func newFloatCard(a fyne.App) *floatCard {
+	c := &floatCard{win: a.NewWindow(cardTitle)}
+	rt := widget.NewRichText()
+	rt.Wrapping = fyne.TextWrapWord
+	c.body = rt
+
+	c.win.SetContent(container.NewBorder(
+		nil, nil, nil, nil,
+		container.NewPadded(rt),
+	))
+	c.win.Resize(fyne.NewSize(400, 240))
+	return c
+}
+
+// setRegion 记录当前监视区域，用于定位浮窗。
+func (c *floatCard) setRegion(r capture.Region) {
+	c.region = r
+}
+
+// update 刷新浮窗内容。
+func (c *floatCard) update(text string) {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		text = "（空）"
+	}
+	c.body.ParseMarkdown(text)
+	if c.visible {
+		c.place()
+	}
+}
+
+// show 显示浮窗。
+func (c *floatCard) show() {
+	if c.visible {
+		c.place()
+		c.win.RequestFocus()
+		return
+	}
+	c.visible = true
+	c.win.Show()
+	go func() {
+		time.Sleep(120 * time.Millisecond)
+		fyne.Do(c.place)
+	}()
+}
+
+// hide 隐藏浮窗。
+func (c *floatCard) hide() {
+	c.visible = false
+	c.win.Hide()
+}
+
+// toggle 切换显示状态。
+func (c *floatCard) toggle() {
+	if c.visible {
+		c.hide()
+		return
+	}
+	c.show()
+}
+
+// visibleNow 返回是否正在显示。
+func (c *floatCard) visibleNow() bool { return c.visible }
+
+// place 把浮窗贴到选区下方（放不下就贴上方），并置顶。
+func (c *floatCard) place() {
+	hwnd, err := win32.FindWindowByTitle(cardTitle)
+	if err != nil {
+		return
+	}
+	_ = win32.SetTopMost(hwnd)
+
+	rect, err := win32.WindowRect(hwnd)
+	if err != nil || rect.Width() <= 0 || rect.Height() <= 0 {
+		return
+	}
+	if !c.region.Valid() {
+		return
+	}
+	mon, _ := win32.MonitorAt(c.region.X+c.region.W/2, c.region.Y+c.region.H/2)
+	work := mon.Work
+	if work.Width() <= 0 {
+		work = mon.Rect
+	}
+	gap := int(8 * max(mon.Scale, 1))
+
+	x := c.region.X
+	y := c.region.Y + c.region.H + gap
+	if y+rect.Height() > work.Bottom {
+		y = c.region.Y - rect.Height() - gap
+	}
+	if y < work.Top {
+		y = work.Bottom - rect.Height()
+	}
+	if x+rect.Width() > work.Right {
+		x = work.Right - rect.Width()
+	}
+	if x < work.Left {
+		x = work.Left
+	}
+	_ = win32.MoveTo(hwnd, win32.Rect{Left: x, Top: y, Right: x + rect.Width(), Bottom: y + rect.Height()})
+}