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unit CocoaDatePicker;
{$mode objfpc}{$H+}
{$modeswitch objectivec1}
interface
uses
Classes, SysUtils,
CocoaAll, CocoaUtils, CocoaPrivate, CocoaCallback, cocoa_extra;
type
{ TCocoaDatePicker }
TCocoaDatePicker = objcclass(NSDatePicker)
public
callback: ICommonCallback;
dateClicked: boolean;
autoResize: boolean;
retainAspectRatio: boolean;
function lclGetCallback: ICommonCallback; override;
procedure lclClearCallback; override;
procedure mouseDown(event: NSEvent); override;
procedure mouseUp(event: NSEvent); override;
procedure mouseMoved(event: NSEvent); override;
procedure mouseDragged(event: NSEvent); override;
procedure rightMouseDown(event: NSEvent); override;
procedure rightMouseUp(event: NSEvent); override;
procedure rightMouseDragged(event: NSEvent); override;
procedure otherMouseDown(event: NSEvent); override;
procedure otherMouseUp(event: NSEvent); override;
procedure otherMouseDragged(event: NSEvent); override;
procedure scrollWheel(event: NSEvent); override;
function acceptsFirstResponder: LCLObjCBoolean; override;
procedure setFrame(aframe: NSRect); override;
end;
implementation
procedure TCocoaDatePicker.mouseDown(event: NSEvent);
Var
oldDate, newDate: TDateTime;
begin
if assigned(callback) then
begin
// Save Date BEFORE mouse click/down event
oldDate:= NSDateToDateTime(Self.dateValue);
if not callback.MouseUpDownEvent(event) then
begin
// Without this, Cocoa will not update our NSDatePicker date...
inherited mouseDown(event);
// After mouse event, has our date changed
newDate:= NSDateToDateTime(Self.dateValue);
dateClicked:= (oldDate <> newDate);
if dateClicked and Assigned(callback) then
callback.SendOnChange;
// This also calls OnClick....
if Assigned(callback) then
callback.MouseUpDownEvent(event, true);
end;
end;
end;
procedure TCocoaDatePicker.mouseMoved(event: NSEvent);
begin
if not callback.MouseMove(event) then
inherited mouseMoved(event);
end;
function TCocoaDatePicker.acceptsFirstResponder: LCLObjCBoolean;
begin
Result := True;
end;
function TCocoaDatePicker.lclGetCallback: ICommonCallback;
begin
Result := callback;
end;
procedure TCocoaDatePicker.lclClearCallback;
begin
callback := nil;
end;
procedure TCocoaDatePicker.setFrame(aframe: NSRect);
var
fsz : NSSize;
sz : NSSize;
rt : double;
wr : double;
hr : double;
begin
inherited setFrame(aframe);
if not autoResize then Exit;
if Self.respondsToSelector(objcselector('fittingSize')) then
fsz:=fittingSize
else
begin
// hardcoded size of a Calendar for MacOSX 10.6
// as can be seen in Interface Builder
fsz.width := 139;
fsz.height := 148;
end;
if (fsz.width=0) or (fsz.height=0) then Exit;
sz:=frame.size;
// resize even if too small already
if retainAspectRatio and (fsz.height>0) and (fsz.width>0)then
begin
rt:=fsz.width/fsz.height;
wr:=sz.width / fsz.width;
hr:=sz.height / fsz.height;
if wr > hr then
fsz.width:=fsz.width * sz.width / (sz.height*rt)
else
fsz.height:=fsz.height * sz.height / (sz.width / rt);
end;
setBoundsSize(fsz);
end;
procedure TCocoaDatePicker.mouseUp(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseUpDownEvent(event) then
inherited mouseUp(event);
end;
procedure TCocoaDatePicker.rightMouseDown(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseUpDownEvent(event) then
inherited rightMouseDown(event);
end;
procedure TCocoaDatePicker.rightMouseUp(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseUpDownEvent(event) then
inherited rightMouseUp(event);
end;
procedure TCocoaDatePicker.rightMouseDragged(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseMove(event) then
inherited rightMouseDragged(event);
end;
procedure TCocoaDatePicker.mouseDragged(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseMove(event) then
inherited mouseDragged(event);
end;
procedure TCocoaDatePicker.otherMouseDown(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseUpDownEvent(event) then
inherited otherMouseDown(event);
end;
procedure TCocoaDatePicker.otherMouseUp(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseUpDownEvent(event) then
inherited otherMouseUp(event);
end;
procedure TCocoaDatePicker.otherMouseDragged(event: NSEvent);
begin
if not Assigned(callback) or not callback.MouseMove(event) then
inherited otherMouseDragged(event);
end;
procedure TCocoaDatePicker.scrollWheel(event: NSEvent);
begin
if not Assigned(callback) or not callback.scrollWheel(event) then
inherited scrollWheel(event);
end;
end.
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