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unit MyxBaseForm;
interface
uses
GnuGetText, TntForms, Classes, Grt, TntSysUtils, Forms, AuxFuncs,
SysUtils, MyxOptions;
type
TMyxBaseForm = class(TTntForm)
private
FWindowPositionRestore: Boolean;
FWindowPositionRestoreSize: Boolean;
protected
function GetGrt: TGrt; virtual;
procedure RestoreWindowPosition;
procedure StoreWindowPosition;
public
constructor Create(AOwner: TComponent); overload; override;
constructor Create(AOwner: TComponent; RestoreWindowPos: Boolean; RestoreWindowSize: Boolean); reintroduce; overload;
destructor Destroy; override;
class procedure StoreWindowPositions(FileName: WideString = '');
property Grt: TGrt read GetGrt;
end;
//----------------------------------------------------------------------------------------------------------------------
implementation
uses
Math;
//----------------------------------------------------------------------------------------------------------------------
constructor TMyxBaseForm.Create(AOwner: TComponent);
begin
Create(AOwner, True, True);
end;
//----------------------------------------------------------------------------------------------------------------------
constructor TMyxBaseForm.Create(AOwner: TComponent; RestoreWindowPos: Boolean; RestoreWindowSize: Boolean);
begin
inherited Create(AOwner);
// Make sure GRT is available
if (Grt = nil) then
Abort;
if (AuxFuncs.DefaultFontName = '') then
begin
AuxFuncs.DefaultFontName :=
CommonOptions.OptionString['DefaultFontName'];
AuxFuncs.DefaultFontHeight :=
StrToIntDef(CommonOptions.OptionString['DefaultFontHeight'], 8);
end;
InitForm(self);
FWindowPositionRestore := RestoreWindowPos;
FWindowPositionRestoreSize := RestoreWindowSize;
RestoreWindowPosition;
end;
// -----------------------------------------------------------------------------
destructor TMyxBaseForm.Destroy;
begin
inherited;
end;
// -----------------------------------------------------------------------------
function TMyxBaseForm.GetGrt: TGrt;
begin
Result := RuntimeEnvironment;
end;
// -----------------------------------------------------------------------------
procedure TMyxBaseForm.RestoreWindowPosition;
var
PFormPositions,
PFormPosition: Pointer;
PosLeft,
PosTop,
PosWidth,
PosHeight: Integer;
FileName: WideString;
begin
// make sure the form can be set on the complete desktop
DefaultMonitor := dmDesktop;
PFormPositions := Grt.Global['/app/formPositions'];
PFormPosition := nil;
if (PFormPositions = nil) then
begin
// Make sure /app exists
GlobalAppDict;
FileName := CommonOptions.OptionString['UserDataDir'] +
TntApplication.Title + ' Window Positions.xml';
if (FileExists(FileName)) then
PFormPositions := Grt.ValueLoadFromFile(FileName)
else
PFormPositions := Grt.DictNewTyped(GrtListValue,
'forms.Position');
Grt.Global['/app/formPositions'] := PFormPositions;
end;
if (PFormPositions <> nil) then
PFormPosition := Grt.DictItem[PFormPositions, Name];
if (PFormPosition <> nil) then
begin
PosLeft := Grt.DictInt[PFormPosition, 'left'];
PosTop := Grt.DictInt[PFormPosition, 'top'];
PosWidth := Grt.DictInt[PFormPosition, 'width'];
PosHeight := Grt.DictInt[PFormPosition, 'height'];
if FWindowPositionRestoreSize then
begin
Width := Max(100, PosWidth);
Height := Max(40, PosHeight);
end;
if FWindowPositionRestore then
begin
// Make sure the form is fully visible on the current desktop (or at least most of it).
if PosLeft + Width > Screen.DesktopWidth then
PosLeft := Screen.DesktopWidth - Width;
if PosTop + Height > Screen.DesktopHeight then
PosTop := Screen.DesktopHeight - Height;
Left := Max(0, PosLeft);
Top := Max(0, PosTop);
end;
WindowState := TWindowState(Grt.DictInt[PFormPosition, 'state']);
end
else
begin
if (Screen.Width >= 1024) then
begin
Left := (Screen.Width + Width) div 2 - Width;
Top := (Screen.Height + Height) div 2 - Height;
end
else
begin
Left := (Screen.Width + Width) div 2 - Width;
Top := 0;
WindowState := wsMaximized;
end;
end;
end;
// -----------------------------------------------------------------------------
procedure TMyxBaseForm.StoreWindowPosition;
var
PApp,
PFormPositions,
PFormPosition,
POldFormPos: Pointer;
begin
PApp := Grt.Global['/app'];
if (PApp = nil) then
begin
PApp := Grt.DictNew('');
Grt.Global['/app'] := PApp;
end;
PFormPositions := Grt.DictItem[PApp, 'formPositions'];
if (PFormPositions = nil) then
begin
PFormPositions :=
Grt.DictNewTyped(GrtDictValue, 'forms.Position');
end;
PFormPosition := Grt.DictNew('forms.Position');
Grt.DictInt[PFormPosition, 'state'] := Ord(WindowState);
Grt.DictInt[PFormPosition, 'monitor'] := Monitor.MonitorNum;
if (WindowState <> wsMaximized) then
begin
Grt.DictInt[PFormPosition, 'left'] := Left;
Grt.DictInt[PFormPosition, 'top'] := Top;
Grt.DictInt[PFormPosition, 'width'] := Width;
Grt.DictInt[PFormPosition, 'height'] := Height;
end
else
begin
POldFormPos := Grt.DictItem[PFormPositions, name];
// make sure to keep existing pos + size when
// the form is maximized
if (POldFormPos <> nil) then
begin
Grt.DictInt[PFormPosition, 'left'] :=
Grt.DictInt[POldFormPos, 'left'];
Grt.DictInt[PFormPosition, 'top'] :=
Grt.DictInt[POldFormPos, 'top'];
Grt.DictInt[PFormPosition, 'width'] :=
Grt.DictInt[POldFormPos, 'width'];
Grt.DictInt[PFormPosition, 'height'] :=
Grt.DictInt[POldFormPos, 'height'];
if (Grt.DictInt[PFormPosition, 'left'] <
Screen.Monitors[Monitor.MonitorNum].Left) or
(Grt.DictInt[PFormPosition, 'left'] >=
Screen.Monitors[Monitor.MonitorNum].Left +
Screen.Monitors[Monitor.MonitorNum].Width) then
begin
Grt.DictInt[PFormPosition, 'left'] :=
Screen.Monitors[Monitor.MonitorNum].Left;
Grt.DictInt[PFormPosition, 'top'] :=
Screen.Monitors[Monitor.MonitorNum].Top;
end;
end;
end;
// store position
Grt.DictItem[PFormPositions, Name] := PFormPosition;
end;
// -----------------------------------------------------------------------------
class procedure TMyxBaseForm.StoreWindowPositions(FileName: WideString);
var
Grt: TGrt;
var
I: Integer;
begin
// Close all application forms, if they can be closed
for I := 0 to Screen.FormCount - 1 do
if (Screen.Forms[I] is TMyxBaseForm) then
TMyxBaseForm(Screen.Forms[I]).StoreWindowPosition;
Grt := RuntimeEnvironment;
if (FileName = '') then
FileName := CommonOptions.OptionString['UserDataDir'] +
TntApplication.Title + ' Window Positions.xml';
WideForceDirectories(WideExtractFilePath(FileName));
Grt.ValueSaveToFile(FileName, Grt.Global['/app/formPositions']);
end;
//----------------------------------------------------------------------------------------------------------------------
end.
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