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Gtk3: do not ask for scrollbars if policy is never or external.

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This commit is contained in:
zeljan1 2025-02-22 09:57:06 +01:00
parent 3d4c31ed33
commit 2df92eabfa
1 changed files with 29 additions and 3 deletions
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32
lcl/interfaces/gtk3/gtk3winapi.inc
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@ -2483,6 +2483,7 @@ function TGtk3WidgetSet.GetScrollbarVisible(Handle: HWND; SBStyle: Integer
): boolean;
var
AWidget: TGtk3Widget absolute Handle;
HScrollPolicy, VScrollPolicy: TGtkPolicyType;
begin
Result := False;
if not IsValidHandle(Handle) then
@ -2493,11 +2494,21 @@ begin
begin
if wtScrollingWin in AWidget.WidgetType then
begin
TGtk3ScrollableWin(AWidget).getScrolledWindow^.get_policy(@HScrollPolicy, @VScrollPolicy);
if SBStyle = SB_Horz then
Result := Assigned(TGtk3ScrollableWin(AWidget).getHorizontalScrollbar) and (TGtk3ScrollableWin(AWidget).getHorizontalScrollbar^.get_visible)
else
begin
if HScrollPolicy >= GTK_POLICY_NEVER then
Result := False
else
Result := Assigned(TGtk3ScrollableWin(AWidget).getHorizontalScrollbar) and (TGtk3ScrollableWin(AWidget).getHorizontalScrollbar^.get_visible)
end else
if SBStyle = SB_Vert then
Result := Assigned(TGtk3ScrollableWin(AWidget).getVerticalScrollbar) and TGtk3ScrollableWin(AWidget).getVerticalScrollbar^.get_visible;
begin
if VScrollPolicy >= GTK_POLICY_NEVER then
Result := False
else
Result := Assigned(TGtk3ScrollableWin(AWidget).getVerticalScrollbar) and TGtk3ScrollableWin(AWidget).getVerticalScrollbar^.get_visible;
end;
end;
end;
end;
@ -4017,6 +4028,21 @@ var
Adjustment^.value := ATarget;
end;
if (ScrollInfo.FMask and SIF_UPDATEPOLICY <> 0) then
begin
if ScrollInfo.nTrackPos = SB_POLICY_CONTINUOUS then
begin
//TODO: Set tracking value into control to true and listen value-changed,
//there's no more gtk2 gtk_range_set_update_policy.
end else
if ScrollInfo.nTrackPos = SB_POLICY_DISCONTINUOUS then
begin
//TODO: Set tracking value to false into control to true and don't listen value-changed
//until button is released - then send value
//there's no more gtk2 gtk_range_set_update_policy.
end;
end;
gtk_adjustment_changed(Adjustment);
{$IFDEF GTK3DEBUGSCROLL}
DebugLn(Format('Updated Adjustment: lower=%.2f, upper=%.2f, page_size=%.2f, value=%.2f, page_increment=%.2f InUpdate %s',