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Add Spectrum gradient fill toggle in settings

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Mirror the existing Wideband gradient fill option for the main spectrum:
a "Spectrum gradient fill" checkbox on the Display settings tab gates the
under-curve gradient in TSpectrumView.DrawSpectrum. The curve, grid,
filter band and VFO markers always draw; only the gradient is optional.

Persisted as spectrum_fill in settings JSON (default True, preserving
current appearance). Wired through Settings -> SettingsForm visibility
event -> MainForm -> TSpectrumView.FillSpectrum, same path as
WidebandFill.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Uladzimir Karpenka
2026-05-29 15:24:33 +03:00
co-authored by Claude Opus 4.8
parent 2a7bf8528a
commit 655d242d02
4 changed files with 48 additions and 10 deletions
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Settings.pas
+4
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@@ -224,6 +224,7 @@ type
ShowWaterfall: Boolean; // True = draw waterfall on main form
ShowWideband: Boolean; // True = draw raw ADC wideband pane on main form
WidebandFill: Boolean; // True = fill wideband spectrum with gradient
SpectrumFill: Boolean; // True = fill main spectrum under the curve with gradient
DisplayDuplex: Boolean; // DUP: при TX показывать RX-водопад, TX-фильтр overlay'ем
// --- Display FPS ---
DisplayFPS: Integer; // spectrum/waterfall timer fps (1..100)
@@ -402,6 +403,7 @@ begin
G.ShowWaterfall := True;
G.ShowWideband := False;
G.WidebandFill := False;
G.SpectrumFill := True;
G.DisplayDuplex := False;
G.DisplayFPS := 60;
G.FreqMhzDigits := 3;
@@ -621,6 +623,7 @@ begin
G.ShowWaterfall := JB(GObj,'show_waterfall',True);
G.ShowWideband := JB(GObj,'show_wideband',False);
G.WidebandFill := JB(GObj,'wideband_fill',False);
G.SpectrumFill := JB(GObj,'spectrum_fill',True);
G.DisplayDuplex := JB(GObj,'display_duplex',False);
G.DisplayFPS := JI(GObj,'display_fps',60);
G.LightTheme := JB(GObj,'light_theme',False);
@@ -708,6 +711,7 @@ begin
JW(O,'show_waterfall',G.ShowWaterfall);
JW(O,'show_wideband',G.ShowWideband);
JW(O,'wideband_fill',G.WidebandFill);
JW(O,'spectrum_fill',G.SpectrumFill);
JW(O,'display_duplex',G.DisplayDuplex);
JW(O,'display_fps',G.DisplayFPS);
JW(O,'light_theme',G.LightTheme);