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cocoa: adding the check for min and max values of the spin edit. If they are the same, pretend we don't have any boundires

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(cherry picked from commit 1bef01e030)
This commit is contained in:
Dmitry Boyarintsev 2021-10-03 13:57:47 -04:00 committed by Maxim Ganetsky
parent 95c87a711d
commit 5e1fcd37e0
1 changed files with 30 additions and 6 deletions
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36
lcl/interfaces/cocoa/cocoatextedits.pas
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@ -29,6 +29,7 @@ interface
uses
// rtl+ftl
Types, Classes, SysUtils,
Math, // needed for MinDouble, MaxDouble
CGGeometry,
// Libs
MacOSAll, CocoaAll, CocoaUtils, CocoaGDIObjects,
@ -408,7 +409,7 @@ type
//Spin: TCustomFloatSpinEdit;
procedure dealloc; override;
function updateStepper: boolean; message 'updateStepper';
procedure UpdateControl(min, max, inc, avalue: double; ADecimalPlaces: Integer); message 'UpdateControl:::::';
procedure UpdateControl(min, max, inc, avalue: double; ADecimalPlaces: Integer; checkMinMax: Boolean); message 'UpdateControl::::::';
procedure lclCreateSubcontrols(const AParams: TCreateParams); message 'lclCreateSubControls:';
procedure lclReleaseSubcontrols; message 'lclReleaseSubcontrols';
procedure PositionSubcontrols(const ALeft, ATop, AWidth, AHeight: Integer); message 'PositionSubcontrols:ATop:AWidth:AHeight:';
@ -1951,7 +1952,18 @@ begin
Result := false;
end;
procedure TCocoaSpinEdit.UpdateControl(min, max, inc, avalue: double; ADecimalPlaces: Integer);
// * value - the current value to be selected. Note: it will be adjusted
// to "min" and "max", if "checkMinMax" is set to true
// * min, max - minimum maximum values allowed. for NSStepper, there's no "unlimited"
// check. "Something" should be set as minimum and maximum
// * checkMinMax - indicates if the min and max values should be verified.
// in LCL is Min = Max then there's not boundries check applied
// Since "min" and "max" are doubles, it's safer to use a booleanFlag
// so the comparison is done by the caller, rather than using approximation
// * inc - incremeantal value to be used when "up" or "down" are pressed
// * DecimalPlaces - the number of decimals to used when showing the value
procedure TCocoaSpinEdit.UpdateControl(min, max, inc, avalue: double; ADecimalPlaces: Integer; checkMinMax: Boolean);
var
notifyChange : Boolean;
v : double;
@ -1959,16 +1971,28 @@ begin
Stepper.setIncrement(inc);
v := avalue;
if v < min then v := min
else if v > max then v := max;
if checkMinMax then
begin
if v < min then v := min
else if v > max then v := max;
end;
notifyChange := (v <> Stepper.doubleValue) or (decimalPlaces <> ADecimalPlaces);
// set min/max after checking for notify change
// .doubleValue would be adjusted by setting min/max
decimalPlaces := ADecimalPlaces;
Stepper.setMinValue(min);
Stepper.setMaxValue(max);
if checkMinMax then begin
Stepper.setMinValue(min);
Stepper.setMaxValue(max);
end else begin
// "Math" unit declared MaxDouble and MinDouble constants
// however, using setMinValue to MinDouble, seems to be ignored
// and Cocoa falls back to the default "0". not sure why.
// Instead using -MaxDouble.
Stepper.setMinValue(-MaxDouble);
Stepper.setMaxValue(+MaxDouble);
end;
if notifychange then
begin