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Fix ruler not updating on sample rate change

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Add FRulerLastSpan to ruler cache — previously only FCenterFreq
and ActiveVfoFreq were tracked, so span changes left the ruler
showing stale frequency step marks.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
ew8bak
2026-04-27 18:37:02 +03:00
co-authored by Claude Sonnet 4.6
parent 5421e57f9c
commit a149b18435
1 changed files with 8 additions and 5 deletions
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SpectrumView.pas
+8 -5
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@@ -48,6 +48,7 @@ type
FSmBitmap: TBitmap; FSmBitmap: TBitmap;
FRulerLastFreq: Double; FRulerLastFreq: Double;
FRulerLastVfo: Double; FRulerLastVfo: Double;
FRulerLastSpan: Double;
// ── Radio state ─────────────────────────────────────────────────────────── // ── Radio state ───────────────────────────────────────────────────────────
FVfoA: Double; FVfoA: Double;
@@ -513,7 +514,7 @@ procedure TSpectrumView.SetRulerSize(W, H: Integer);
begin begin
if (W <= 0) or (H <= 0) then Exit; if (W <= 0) or (H <= 0) then Exit;
FRulerBitmap.SetSize(W, H); FRulerBitmap.SetSize(W, H);
FRulerLastFreq := -1.0; FRulerLastVfo := -1.0; FRulerLastFreq := -1.0; FRulerLastVfo := -1.0; FRulerLastSpan := -1.0;
end; end;
function TSpectrumView.SpectrumBitmapWidth: Integer; function TSpectrumView.SpectrumBitmapWidth: Integer;
@@ -533,7 +534,7 @@ end;
procedure TSpectrumView.InvalidateRulerCache; procedure TSpectrumView.InvalidateRulerCache;
begin begin
FRulerLastFreq := -1.0; FRulerLastVfo := -1.0; FRulerLastFreq := -1.0; FRulerLastVfo := -1.0; FRulerLastSpan := -1.0;
end; end;
procedure TSpectrumView.ResetSpectrumBuf; procedure TSpectrumView.ResetSpectrumBuf;
@@ -570,7 +571,8 @@ end;
function TSpectrumView.NeedsRulerRedraw: Boolean; function TSpectrumView.NeedsRulerRedraw: Boolean;
begin begin
Result := (Abs(FCenterFreq - FRulerLastFreq) >= 0.5) or Result := (Abs(FCenterFreq - FRulerLastFreq) >= 0.5) or
(Abs(ActiveVfoFreq - FRulerLastVfo) >= 0.5); (Abs(ActiveVfoFreq - FRulerLastVfo) >= 0.5) or
(Abs(FSpanHz - FRulerLastSpan) >= 1.0);
end; end;
// ──────────────────────────────────────────────────────────────────────────── // ────────────────────────────────────────────────────────────────────────────
@@ -854,8 +856,9 @@ begin
W := FPbRuler.Width; H := FPbRuler.Height; W := FPbRuler.Width; H := FPbRuler.Height;
if (W <= 0) or (H <= 0) then Exit; if (W <= 0) or (H <= 0) then Exit;
if (Abs(FCenterFreq - FRulerLastFreq) < 0.5) and if (Abs(FCenterFreq - FRulerLastFreq) < 0.5) and
(Abs(ActiveVfoFreq - FRulerLastVfo) < 0.5) then Exit; (Abs(ActiveVfoFreq - FRulerLastVfo) < 0.5) and
FRulerLastFreq := FCenterFreq; FRulerLastVfo := ActiveVfoFreq; (Abs(FSpanHz - FRulerLastSpan) < 1.0) then Exit;
FRulerLastFreq := FCenterFreq; FRulerLastVfo := ActiveVfoFreq; FRulerLastSpan := FSpanHz;
if (FRulerBitmap.Width <> W) or (FRulerBitmap.Height <> H) then if (FRulerBitmap.Width <> W) or (FRulerBitmap.Height <> H) then
FRulerBitmap.SetSize(W, H); FRulerBitmap.SetSize(W, H);
C := FRulerBitmap.Canvas; C := FRulerBitmap.Canvas;