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Draw BottomBar at visible window bottom instead of region Y which may be outside viewport

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This commit is contained in:
Greg Pomerantz 2026-05-09 17:19:14 -04:00
parent 9476f5448a
commit e096341533
1 changed files with 22 additions and 6 deletions
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28
internal/ui/render.go
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@ -1,6 +1,7 @@
package ui
import (
"fmt"
"image"
"image/color"
@ -29,6 +30,7 @@ func New(th Theme, shp *text.Shaper) *Renderer {
// Draw iterates elements and draws each in slice order (back-to-front).
func (r *Renderer) Draw(gtx layout.Context, elems []Element) {
for _, e := range elems {
fmt.Printf("[DEBUG Draw] elem type=%T visible=%v\n", e, e.Visible())
if !e.Visible() {
continue
}
@ -146,21 +148,35 @@ func (r *Renderer) drawStatusBar(gtx layout.Context, sb StatusBar) {
func (r *Renderer) drawBottomBar(gtx layout.Context, bb BottomBar) {
reg := bb.Region()
// BottomBar text at reg.Y (top of bar), using drawText for consistent rendering.
// The BottomBar region is at the bottom of the screen with 10DP margin.
bottomY := reg.Y
fmt.Printf("[DEBUG drawBottomBar] reg=(%d, %d, %d, %d)\n", gtx.Dp(reg.X), gtx.Dp(reg.Y), gtx.Dp(reg.W), gtx.Dp(reg.H))
fmt.Printf("[DEBUG drawBottomBar] constraints=(%d, %d, %d, %d)\n",
gtx.Constraints.Min.X, gtx.Constraints.Min.Y,
gtx.Constraints.Max.X, gtx.Constraints.Max.Y)
// Clamp BottomBar Y to visible window area.
// The region Y may be outside the visible area (e.g. 3308 DP when window is 1688px).
// gtx.Constraints.Max.Y is in physical pixels. Convert to DP using gtx.Metric.PxPerDp.
scale := gtx.Metric.PxPerDp
bottomBarHeightPx := int(24 * scale)
marginPx := int(10 * scale)
drawYPx := gtx.Constraints.Max.Y - bottomBarHeightPx - marginPx
drawY := unit.Dp(float64(drawYPx) / float64(scale))
fmt.Printf("[DEBUG drawBottomBar] drawY=%d (clamped from %d)\n", gtx.Dp(drawY), gtx.Dp(reg.Y))
// Left: Cursor position
cursorX := reg.X + unit.Dp(8)
r.drawText(gtx, r.shp, bb.CursorPos, r.theme.FontSize, cursorX, bottomY, color.NRGBA{R: 0, G: 0, B: 0, A: 255})
fmt.Printf("[DEBUG drawBottomBar] cursor=(%d, %d) text=%q\n", gtx.Dp(cursorX), gtx.Dp(drawY), bb.CursorPos)
r.drawText(gtx, r.shp, bb.CursorPos, r.theme.FontSize, cursorX, drawY, color.NRGBA{R: 0, G: 0, B: 0, A: 255})
// Center: Byte position
byteX := reg.X + reg.W/2 - unit.Dp(60) // approximate center
r.drawText(gtx, r.shp, bb.BytePos, r.theme.FontSize, byteX, bottomY, color.NRGBA{R: 0, G: 0, B: 0, A: 255})
fmt.Printf("[DEBUG drawBottomBar] byte=(%d, %d) text=%q\n", gtx.Dp(byteX), gtx.Dp(drawY), bb.BytePos)
r.drawText(gtx, r.shp, bb.BytePos, r.theme.FontSize, byteX, drawY, color.NRGBA{R: 0, G: 0, B: 0, A: 255})
// Right: Word wrap button
wordWrapX := reg.X + reg.W - unit.Dp(80)
r.drawText(gtx, r.shp, "W:"+boolToString(bb.WordWrap), r.theme.FontSize, wordWrapX, bottomY, color.NRGBA{R: 0, G: 0, B: 0, A: 255})
fmt.Printf("[DEBUG drawBottomBar] wordwrap=(%d, %d) text=%q\n", gtx.Dp(wordWrapX), gtx.Dp(drawY), "W:"+boolToString(bb.WordWrap))
r.drawText(gtx, r.shp, "W:"+boolToString(bb.WordWrap), r.theme.FontSize, wordWrapX, drawY, color.NRGBA{R: 0, G: 0, B: 0, A: 255})
}
func (r *Renderer) drawButton(gtx layout.Context, btn Button) {