lazarus/components/ideintf/formeditingintf.pas
2020-03-23 20:33:04 +00:00

825 lines
29 KiB
ObjectPascal

{
*****************************************************************************
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
Author: Shane Miller, Mattias Gaertner
Abstract:
Methods to access the form editing of the IDE.
}
unit FormEditingIntf;
{$mode objfpc}{$H+}
interface
uses
Classes, TypInfo, types, Math,
// LCL
LCLClasses, Forms, Controls,
// LazUtils
CompWriterPas, LazLoggerBase,
// IdeIntf
ComponentEditors, ObjectInspector, UnitResources;
const
ComponentPaletteImageWidth = 24;
ComponentPaletteImageHeight = 24;
ComponentPaletteBtnWidth = ComponentPaletteImageWidth + 3;
ComponentPaletteBtnHeight = ComponentPaletteImageHeight + 3;
DesignerBaseClassId_TForm = 0;
DesignerBaseClassId_TDataModule = 1;
DesignerBaseClassId_TFrame = 2;
NonControlProxyDesignerFormId = 0;
FrameProxyDesignerFormId = 1;
type
TDMCompAtPosFlag = (
dmcapfOnlyVisible,
dmcapfOnlySelectable
);
TDMCompAtPosFlags = set of TDMCompAtPosFlag;
TDesignerMediator = class;
INonFormDesigner = interface
['{244DEC6B-80FB-4B28-85EF-FE613D1E2DD3}']
procedure Create;
function GetLookupRoot: TComponent;
procedure SetLookupRoot(const AValue: TComponent);
property LookupRoot: TComponent read GetLookupRoot write SetLookupRoot;
procedure SetBounds(ALeft, ATop, AWidth, AHeight: integer);
procedure Notification(AComponent: TComponent; AOperation: TOperation);
procedure Paint;
procedure DoSaveBounds;
procedure DoLoadBounds;
end;
IFrameDesigner = interface(INonFormDesigner)
['{2B9442B0-6359-450A-88A1-BB6744F84918}']
end;
INonControlDesigner = interface(INonFormDesigner)
['{5943A33C-F812-4052-BFE8-77AEA73199A9}']
function GetMediator: TDesignerMediator;
procedure SetMediator(AValue: TDesignerMediator);
property Mediator: TDesignerMediator read GetMediator write SetMediator;
end;
{ TNonFormProxyDesignerForm }
TNonFormProxyDesignerForm = class(TForm, INonFormDesigner)
private
FNonFormDesigner: INonFormDesigner;
FLookupRoot: TComponent;
protected
procedure Notification(AComponent: TComponent; AOperation: TOperation); override;
procedure SetLookupRoot(AValue: TComponent); virtual;
function GetPublishedBounds(AIndex: Integer): Integer; virtual;
procedure SetPublishedBounds(AIndex: Integer; AValue: Integer); virtual;
public
constructor Create(AOwner: TComponent; ANonFormDesigner: INonFormDesigner); virtual; reintroduce;
destructor Destroy; override;
procedure Paint; override;
procedure SetBounds(ALeft, ATop, AWidth, AHeight: integer); override;
procedure SetDesignerFormBounds(ALeft, ATop, AWidth, AHeight: integer);
procedure SetPublishedBounds(ALeft, ATop, AWidth, AHeight: integer);
procedure SetLookupRootBounds(ALeft, ATop, AWidth, AHeight: integer); virtual;
function DockedDesigner: boolean; virtual;
property NonFormDesigner: INonFormDesigner read FNonFormDesigner implements INonFormDesigner;
property LookupRoot: TComponent read FLookupRoot write SetLookupRoot;
published
property Left: Integer index 0 read GetPublishedBounds write SetPublishedBounds;
property Top: Integer index 1 read GetPublishedBounds write SetPublishedBounds;
property Width: Integer index 2 read GetPublishedBounds write SetPublishedBounds;
property Height: Integer index 3 read GetPublishedBounds write SetPublishedBounds;
property ClientWidth: Integer index 2 read GetPublishedBounds write SetPublishedBounds;
property ClientHeight: Integer index 3 read GetPublishedBounds write SetPublishedBounds;
end;
{ TFrameProxyDesignerForm }
TFrameProxyDesignerForm = class(TNonFormProxyDesignerForm, IFrameDesigner)
private
function GetFrameDesigner: IFrameDesigner;
public
property FrameDesigner: IFrameDesigner read GetFrameDesigner implements IFrameDesigner;
end;
{ TNonControlProxyDesignerForm }
TNonControlProxyDesignerForm = class(TNonFormProxyDesignerForm, INonControlDesigner)
private
FMediator: TDesignerMediator;
function GetNonControlDesigner: INonControlDesigner;
protected
procedure SetMediator(AValue: TDesignerMediator); virtual;
public
property NonControlDesigner: INonControlDesigner read GetNonControlDesigner implements INonControlDesigner;
property Mediator: TDesignerMediator read FMediator write SetMediator;
end;
TNonFormProxyDesignerFormClass = class of TNonFormProxyDesignerForm;
{ TDesignerMediator
To edit designer forms which do not use the LCL, register a TDesignerMediator,
which will emulate the painting, handle the mouse and editing bounds. }
TDesignerMediator = class(TComponent)
private
FDesigner: TComponentEditorDesigner;
FLCLForm: TForm;
FRoot: TComponent;
protected
FCollectedChildren: TFPList;
procedure SetDesigner(const AValue: TComponentEditorDesigner); virtual;
procedure SetLCLForm(const AValue: TForm); virtual;
procedure SetRoot(const AValue: TComponent); virtual;
procedure CollectChildren(Child: TComponent); virtual;
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
public
class function FormClass: TComponentClass; virtual; abstract;
class function CreateMediator(TheOwner, aForm: TComponent): TDesignerMediator; virtual;
class procedure InitFormInstance({%H-}aForm: TComponent); virtual; // called after NewInstance, before constructor
public
procedure SetBounds(AComponent: TComponent; NewBounds: TRect); virtual;
procedure GetBounds(AComponent: TComponent; out CurBounds: TRect); virtual;
procedure SetFormBounds(RootComponent: TComponent; NewBounds, ClientRect: TRect); virtual;
procedure GetFormBounds(RootComponent: TComponent; out CurBounds, CurClientRect: TRect); virtual;
procedure GetClientArea(AComponent: TComponent; out CurClientArea: TRect;
out ScrollOffset: TPoint); virtual;
function GetComponentOriginOnForm(AComponent: TComponent): TPoint; virtual;
function ComponentIsIcon({%H-}AComponent: TComponent): boolean; virtual;
function ParentAcceptsChild({%H-}Parent: TComponent; {%H-}Child: TComponentClass): boolean; virtual;
function ComponentIsVisible({%H-}AComponent: TComponent): Boolean; virtual;
function ComponentIsSelectable({%H-}AComponent: TComponent): Boolean; virtual;
function ComponentAtPos(p: TPoint; MinClass: TComponentClass;
Flags: TDMCompAtPosFlags): TComponent; virtual;
procedure GetChildComponents(Parent: TComponent; ChildComponents: TFPList); virtual;
function UseRTTIForMethods({%H-}aComponent: TComponent): boolean; virtual; // false = use sources
// events
procedure InitComponent(AComponent, NewParent: TComponent; NewBounds: TRect); virtual;
procedure Paint; virtual;
procedure KeyDown(Sender: TControl; var {%H-}Key: word; {%H-}Shift: TShiftState); virtual;
procedure KeyUp(Sender: TControl; var {%H-}Key: word; {%H-}Shift: TShiftState); virtual;
procedure MouseDown({%H-}Button: TMouseButton; {%H-}Shift: TShiftState; {%H-}p: TPoint; var {%H-}Handled: boolean); virtual;
procedure MouseMove({%H-}Shift: TShiftState; {%H-}p: TPoint; var {%H-}Handled: boolean); virtual;
procedure MouseUp({%H-}Button: TMouseButton; {%H-}Shift: TShiftState; {%H-}p: TPoint; var {%H-}Handled: boolean); virtual;
procedure GetObjInspNodeImageIndex({%H-}APersistent: TPersistent; var {%H-}AIndex: integer); virtual;
property LCLForm: TForm read FLCLForm write SetLCLForm;
property Designer: TComponentEditorDesigner read FDesigner write SetDesigner;
property Root: TComponent read FRoot write SetRoot;
end;
TDesignerMediatorClass = class of TDesignerMediator;
{ TAbstractFormEditor }
TAbstractFormEditor = class
private
FNonFormProxyDesignerFormClass: array[0..1] of TNonFormProxyDesignerFormClass;
protected
function GetDesignerBaseClasses(Index: integer): TComponentClass; virtual; abstract;
function GetStandardDesignerBaseClasses(Index: integer): TComponentClass; virtual; abstract;
procedure SetStandardDesignerBaseClasses(Index: integer; AValue: TComponentClass); virtual; abstract;
function GetDesigner(Index: integer): TIDesigner; virtual; abstract;
function GetDesignerMediators(Index: integer): TDesignerMediatorClass; virtual; abstract;
function GetNonFormProxyDesignerForm(Index: Integer): TNonFormProxyDesignerFormClass; virtual;
procedure SetNonFormProxyDesignerForm(Index: Integer; AValue: TNonFormProxyDesignerFormClass); virtual;
public
constructor Create;
// persistent
procedure RegisterDefineProperty(const APersistentClassName,
Identifier: string); virtual; abstract;
// components
function FindComponentByName(const Name: ShortString
): TComponent; virtual; abstract;
function CreateUniqueComponentName(AComponent: TComponent): string; virtual; abstract;
function CreateUniqueComponentName(const AClassName: string;
OwnerComponent: TComponent): string; virtual; abstract;
function GetDefaultComponentParent(TypeClass: TComponentClass
): TComponent; virtual; abstract;
function GetDefaultComponentPosition(TypeClass: TComponentClass;
ParentComp: TComponent;
out X,Y: integer): boolean; virtual; abstract;
function CreateComponent(ParentComp: TComponent;
TypeClass: TComponentClass;
const AUnitName: shortstring;
X,Y,W,H: Integer;
DisableAutoSize: boolean): TComponent; virtual; abstract;
function CreateComponentFromStream(BinStream: TStream;
UnitResourcefileFormat: TUnitResourcefileFormatClass;
AncestorType: TComponentClass;
const NewUnitName: ShortString;
Interactive: boolean;
Visible: boolean = true;
DisableAutoSize: boolean = false;
ContextObj: TObject = nil): TComponent; virtual; abstract;
procedure CreateChildComponentsFromStream(BinStream: TStream;
ComponentClass: TComponentClass; Root: TComponent;
ParentControl: TWinControl; NewComponents: TFPList); virtual; abstract;
// ancestors
function GetAncestorLookupRoot(AComponent: TComponent): TComponent; virtual; abstract;
function GetAncestorInstance(AComponent: TComponent): TComponent; virtual; abstract;
function RegisterDesignerBaseClass(AClass: TComponentClass): integer; virtual; abstract;
function DesignerBaseClassCount: Integer; virtual; abstract;
property DesignerBaseClasses[Index: integer]: TComponentClass read GetDesignerBaseClasses;
procedure UnregisterDesignerBaseClass(AClass: TComponentClass); virtual; abstract;
function IndexOfDesignerBaseClass(AClass: TComponentClass): integer; virtual; abstract;
function DescendFromDesignerBaseClass(AClass: TComponentClass): integer; virtual; abstract;
function FindDesignerBaseClassByName(const AClassName: shortstring; WithDefaults: boolean): TComponentClass; virtual; abstract;
property StandardDesignerBaseClasses[Index: integer]: TComponentClass read GetStandardDesignerBaseClasses
write SetStandardDesignerBaseClasses;
function StandardDesignerBaseClassesCount: Integer; virtual; abstract;
// designers
function DesignerCount: integer; virtual; abstract;
property Designer[Index: integer]: TIDesigner read GetDesigner;
function GetCurrentDesigner: TIDesigner; virtual; abstract;
function GetDesignerForm(APersistent: TPersistent): TCustomForm; virtual; abstract;
function GetDesignerByComponent(AComponent: TComponent): TIDesigner; virtual; abstract;
function NonFormProxyDesignerFormCount: integer; virtual;
property NonFormProxyDesignerForm[Index: integer]: TNonFormProxyDesignerFormClass read GetNonFormProxyDesignerForm
write SetNonFormProxyDesignerForm;
// mediators for non LCL forms
procedure RegisterDesignerMediator(MediatorClass: TDesignerMediatorClass); virtual; abstract; // auto calls RegisterDesignerBaseClass
procedure UnregisterDesignerMediator(MediatorClass: TDesignerMediatorClass); virtual; abstract; // auto calls UnregisterDesignerBaseClass
function DesignerMediatorCount: integer; virtual; abstract;
property DesignerMediators[Index: integer]: TDesignerMediatorClass read GetDesignerMediators;
function GetDesignerMediatorByComponent(AComponent: TComponent): TDesignerMediator; virtual; abstract;
// cut, copy, paste
function SaveSelectionToStream(s: TStream): Boolean; virtual; abstract;
function InsertFromStream(s: TStream; Parent: TWinControl;
Flags: TComponentPasteSelectionFlags
): Boolean; virtual; abstract;
function ClearSelection: Boolean; virtual; abstract;
function DeleteSelection: Boolean; virtual; abstract;
function CopySelectionToClipboard: Boolean; virtual; abstract;
function CutSelectionToClipboard: Boolean; virtual; abstract;
function PasteSelectionFromClipboard(Flags: TComponentPasteSelectionFlags
): Boolean; virtual; abstract;
procedure SaveComponentAsPascal(aDesigner: TIDesigner; Writer: TCompWriterPas); virtual; abstract;
// designer tool windows
function GetCurrentObjectInspector: TObjectInspectorDlg; virtual; abstract;
end;
type
TDesignerIDECommandForm = class(TCustomForm)
// dummy form class, used by the IDE commands for keys in the designers
end;
var
FormEditingHook: TAbstractFormEditor; // will be set by the IDE
procedure GetComponentLeftTopOrDesignInfo(AComponent: TComponent; out aLeft, aTop: integer); // get properties if exists, otherwise get DesignInfo
procedure SetComponentLeftTopOrDesignInfo(AComponent: TComponent; aLeft, aTop: integer); // set properties if exists, otherwise set DesignInfo
function TrySetOrdProp(Instance: TPersistent; const PropName: string;
Value: integer): boolean;
function TryGetOrdProp(Instance: TPersistent; const PropName: string;
out Value: integer): boolean;
function LeftFromDesignInfo(ADesignInfo: LongInt): SmallInt; inline;
function TopFromDesignInfo(ADesignInfo: LongInt): SmallInt; inline;
procedure SetDesignInfoLeft(AComponent: TComponent; const aLeft: SmallInt); inline;
procedure SetDesignInfoTop(AComponent: TComponent; const aTop: SmallInt); inline;
function LeftTopToDesignInfo(const ALeft, ATop: SmallInt): LongInt; inline;
procedure DesignInfoToLeftTop(ADesignInfo: LongInt; out ALeft, ATop: SmallInt); inline;
function LookupRoot(AForm: TCustomForm): TComponent;
implementation
procedure GetComponentLeftTopOrDesignInfo(AComponent: TComponent; out aLeft,
aTop: integer);
var
Info: LongInt;
begin
Info:=AComponent.DesignInfo;
if not TryGetOrdProp(AComponent,'Left',aLeft) then
aLeft:=LeftFromDesignInfo(Info);
if not TryGetOrdProp(AComponent,'Top',aTop) then
aTop:=TopFromDesignInfo(Info);
end;
procedure SetComponentLeftTopOrDesignInfo(AComponent: TComponent;
aLeft, aTop: integer);
var
HasLeft: Boolean;
HasTop: Boolean;
begin
HasLeft:=TrySetOrdProp(AComponent,'Left',aLeft);
HasTop:=TrySetOrdProp(AComponent,'Top',aTop);
if HasLeft and HasTop then exit;
ALeft := Max(Low(SmallInt), Min(ALeft, High(SmallInt)));
ATop := Max(Low(SmallInt), Min(ATop, High(SmallInt)));
AComponent.DesignInfo:=LeftTopToDesignInfo(aLeft,aTop);
end;
function TrySetOrdProp(Instance: TPersistent; const PropName: string;
Value: integer): boolean;
var
PropInfo: PPropInfo;
begin
PropInfo:=GetPropInfo(Instance.ClassType,PropName);
if PropInfo=nil then exit(false);
SetOrdProp(Instance,PropInfo,Value);
Result:=true;
end;
function TryGetOrdProp(Instance: TPersistent; const PropName: string; out
Value: integer): boolean;
var
PropInfo: PPropInfo;
begin
PropInfo:=GetPropInfo(Instance.ClassType,PropName);
if PropInfo=nil then exit(false);
Value:=GetOrdProp(Instance,PropInfo);
Result:=true;
end;
function LeftFromDesignInfo(ADesignInfo: LongInt): SmallInt;
begin
Result := LazLongRec(ADesignInfo).Lo;
end;
function TopFromDesignInfo(ADesignInfo: LongInt): SmallInt;
begin
Result := LazLongRec(ADesignInfo).Hi;
end;
procedure SetDesignInfoLeft(AComponent: TComponent; const aLeft: SmallInt);
var
DesignInfo: LongInt;
begin
DesignInfo:=AComponent.DesignInfo;
LazLongRec(DesignInfo).Lo:=ALeft;
AComponent.DesignInfo:=DesignInfo;
end;
procedure SetDesignInfoTop(AComponent: TComponent; const aTop: SmallInt);
var
DesignInfo: LongInt;
begin
DesignInfo:=AComponent.DesignInfo;
LazLongRec(DesignInfo).Hi:=aTop;
AComponent.DesignInfo:=DesignInfo;
end;
function LeftTopToDesignInfo(const ALeft, ATop: SmallInt): LongInt;
begin
LazLongRec(Result).Lo:=ALeft;
LazLongRec(Result).Hi:=ATop;
end;
procedure DesignInfoToLeftTop(ADesignInfo: LongInt; out ALeft, ATop: SmallInt);
begin
ALeft := LazLongRec(ADesignInfo).Lo;
ATop := LazLongRec(ADesignInfo).Hi;
end;
function IsFormDesignFunction(AForm: TWinControl): boolean;
var
LForm: TCustomForm absolute AForm;
begin
if (AForm = nil) or not (AForm is TCustomForm) then
Exit(False);
Result := (csDesignInstance in LForm.ComponentState)
or ((csDesigning in LForm.ComponentState) and (LForm.Designer <> nil))
or (LForm is TNonFormProxyDesignerForm);
end;
function LookupRoot(AForm: TCustomForm): TComponent;
begin
if AForm is TNonFormProxyDesignerForm then
Result := TNonFormProxyDesignerForm(AForm).LookupRoot
else if csDesignInstance in AForm.ComponentState then
Result := AForm
else
Result := nil;
end;
{ TAbstractFormEditor }
function TAbstractFormEditor.GetNonFormProxyDesignerForm(Index: Integer
): TNonFormProxyDesignerFormClass;
begin
Result := FNonFormProxyDesignerFormClass[Index];
end;
procedure TAbstractFormEditor.SetNonFormProxyDesignerForm(Index: Integer;
AValue: TNonFormProxyDesignerFormClass);
begin
FNonFormProxyDesignerFormClass[Index] := AValue;
end;
constructor TAbstractFormEditor.Create;
begin
FNonFormProxyDesignerFormClass[NonControlProxyDesignerFormId] := TNonControlProxyDesignerForm;
FNonFormProxyDesignerFormClass[FrameProxyDesignerFormId] := TFrameProxyDesignerForm;
end;
function TAbstractFormEditor.NonFormProxyDesignerFormCount: integer;
begin
Result := Length(FNonFormProxyDesignerFormClass);
end;
{ TNonControlProxyDesignerForm }
function TNonControlProxyDesignerForm.GetNonControlDesigner: INonControlDesigner;
begin
Result := FNonFormDesigner as INonControlDesigner;
end;
procedure TNonControlProxyDesignerForm.SetMediator(AValue: TDesignerMediator);
begin
FMediator := AValue;
end;
{ TFrameProxyDesignerForm }
function TFrameProxyDesignerForm.GetFrameDesigner: IFrameDesigner;
begin
Result := FNonFormDesigner as IFrameDesigner;
end;
{ TNonFormProxyDesignerForm }
constructor TNonFormProxyDesignerForm.Create(AOwner: TComponent;
ANonFormDesigner: INonFormDesigner);
begin
inherited CreateNew(AOwner, 1);
FNonFormDesigner := ANonFormDesigner;
FNonFormDesigner.Create;
end;
destructor TNonFormProxyDesignerForm.Destroy;
begin
inherited Destroy;
DebugLn(['TNonFormProxyDesignerForm.Destroy: Self=', Self, ', LookupRoot=', FLookupRoot]);
end;
procedure TNonFormProxyDesignerForm.Notification(AComponent: TComponent;
AOperation: TOperation);
begin
inherited Notification(AComponent, AOperation);
if Assigned(FNonFormDesigner) then
FNonFormDesigner.Notification(AComponent, AOperation);
end;
procedure TNonFormProxyDesignerForm.SetLookupRoot(AValue: TComponent);
begin
FLookupRoot := AValue;
end;
function TNonFormProxyDesignerForm.GetPublishedBounds(AIndex: Integer): Integer;
begin
Result := 0;
case AIndex of
0: Result := inherited Left;
1: Result := inherited Top;
2: Result := inherited Width;
3: Result := inherited Height;
end;
end;
procedure TNonFormProxyDesignerForm.SetPublishedBounds(AIndex: Integer; AValue: Integer);
begin
case AIndex of
0: inherited Left := AValue;
1: inherited Top := AValue;
2: inherited Width := AValue;
3: inherited Height := AValue;
end;
end;
procedure TNonFormProxyDesignerForm.Paint;
begin
inherited Paint;
FNonFormDesigner.Paint;
end;
procedure TNonFormProxyDesignerForm.SetBounds(ALeft, ATop, AWidth, AHeight: integer);
begin
inherited SetBounds(aLeft, aTop, aWidth, aHeight);
if Assigned(FNonFormDesigner) then
FNonFormDesigner.SetBounds(ALeft, ATop, AWidth, AHeight);
end;
procedure TNonFormProxyDesignerForm.SetDesignerFormBounds(ALeft, ATop, AWidth, AHeight: integer);
begin
inherited SetBounds(aLeft, aTop, aWidth, aHeight);
end;
procedure TNonFormProxyDesignerForm.SetPublishedBounds(ALeft, ATop, AWidth, AHeight: integer);
begin
SetPublishedBounds(0, ALeft);
SetPublishedBounds(1, ATop);
SetPublishedBounds(2, AWidth);
SetPublishedBounds(3, AHeight);
end;
procedure TNonFormProxyDesignerForm.SetLookupRootBounds(ALeft, ATop, AWidth, AHeight: integer);
begin
if LookupRoot is TControl then
TControl(LookupRoot).SetBounds(ALeft, ATop, AWidth, AHeight);
end;
function TNonFormProxyDesignerForm.DockedDesigner: boolean;
begin
Result := False;
end;
{ TDesignerMediator }
procedure TDesignerMediator.SetRoot(const AValue: TComponent);
begin
if FRoot=AValue then exit;
if FRoot<>nil then
FRoot.RemoveFreeNotification(Self);
FRoot:=AValue;
if FRoot<>nil then
FRoot.FreeNotification(Self);
end;
procedure TDesignerMediator.CollectChildren(Child: TComponent);
begin
FCollectedChildren.Add(Child);
end;
procedure TDesignerMediator.Notification(AComponent: TComponent; Operation: TOperation);
begin
inherited Notification(AComponent, Operation);
if Operation=opRemove then begin
if AComponent=FLCLForm then FLCLForm:=nil;
if AComponent=FRoot then FRoot:=nil;
end;
end;
class function TDesignerMediator.CreateMediator(TheOwner, aForm: TComponent
): TDesignerMediator;
begin
Result:=Create(TheOwner);
Result.FRoot:=aForm;
end;
procedure TDesignerMediator.SetDesigner(const AValue: TComponentEditorDesigner);
begin
if FDesigner=AValue then exit;
//if FDesigner<>nil then begin
//end;
FDesigner:=AValue;
end;
procedure TDesignerMediator.SetLCLForm(const AValue: TForm);
begin
if FLCLForm=AValue then exit;
if FLCLForm<>nil then
FLCLForm.RemoveFreeNotification(Self);
FLCLForm:=AValue;
if FLCLForm<>nil then
FLCLForm.FreeNotification(Self);
end;
class procedure TDesignerMediator.InitFormInstance(aForm: TComponent);
begin
end;
procedure TDesignerMediator.SetBounds(AComponent: TComponent; NewBounds: TRect);
begin
SetComponentLeftTopOrDesignInfo(AComponent,NewBounds.Left,NewBounds.Top);
end;
procedure TDesignerMediator.GetBounds(AComponent: TComponent; out
CurBounds: TRect);
var
aLeft: integer;
aTop: integer;
begin
GetComponentLeftTopOrDesignInfo(AComponent,aLeft,aTop);
CurBounds:=Rect(aLeft,aTop,aLeft+ComponentPaletteBtnWidth,aTop+ComponentPaletteBtnHeight);
end;
procedure TDesignerMediator.SetFormBounds(RootComponent: TComponent; NewBounds,
ClientRect: TRect);
// default: use NewBounds as position and the ClientRect as size
var
r: TRect;
begin
r:=Bounds(NewBounds.Left,NewBounds.Top,
ClientRect.Right-ClientRect.Left,ClientRect.Bottom-ClientRect.Top);
//debugln(['TDesignerMediator.SetFormBounds NewBounds=',dbgs(NewBounds),' ClientRect=',dbgs(ClientRect),' r=',dbgs(r)]);
SetBounds(RootComponent,r);
end;
procedure TDesignerMediator.GetFormBounds(RootComponent: TComponent; out
CurBounds, CurClientRect: TRect);
// default: clientarea is whole bounds and CurBounds.Width/Height=0
// The IDE will use the clientarea to determine the size of the form
begin
GetBounds(RootComponent,CurBounds);
//debugln(['TDesignerMediator.GetFormBounds ',dbgs(CurBounds)]);
CurClientRect:=Rect(0,0,CurBounds.Right-CurBounds.Left,
CurBounds.Bottom-CurBounds.Top);
CurBounds.Right:=CurBounds.Left;
CurBounds.Bottom:=CurBounds.Top;
//debugln(['TDesignerMediator.GetFormBounds ',dbgs(CurBounds),' ',dbgs(CurClientRect)]);
end;
procedure TDesignerMediator.GetClientArea(AComponent: TComponent; out
CurClientArea: TRect; out ScrollOffset: TPoint);
// default: no ScrollOffset and client area is whole bounds
begin
GetBounds(AComponent,CurClientArea);
OffsetRect(CurClientArea,-CurClientArea.Left,-CurClientArea.Top);
ScrollOffset:=Point(0,0);
end;
function TDesignerMediator.GetComponentOriginOnForm(AComponent: TComponent): TPoint;
var
Parent: TComponent;
ClientArea: TRect;
ScrollOffset: TPoint;
CurBounds: TRect;
begin
if ComponentIsIcon(AComponent) then
begin
Result.X := LeftFromDesignInfo(AComponent.DesignInfo);
Result.Y := TopFromDesignInfo(AComponent.DesignInfo);
Exit;
end;
Result:=Point(0,0);
while AComponent<>nil do begin
Parent:=AComponent.GetParentComponent;
if Parent=nil then break;
GetBounds(AComponent,CurBounds);
inc(Result.X,CurBounds.Left);
inc(Result.Y,CurBounds.Top);
GetClientArea(Parent,ClientArea,ScrollOffset);
inc(Result.X,ClientArea.Left+ScrollOffset.X);
inc(Result.Y,ClientArea.Top+ScrollOffset.Y);
AComponent:=Parent;
end;
end;
procedure TDesignerMediator.Paint;
begin
end;
function TDesignerMediator.ComponentIsIcon(AComponent: TComponent): boolean;
begin
Result:=true;
end;
function TDesignerMediator.ParentAcceptsChild(Parent: TComponent;
Child: TComponentClass): boolean;
begin
Result:=false;
end;
function TDesignerMediator.ComponentIsVisible(AComponent: TComponent): Boolean;
begin
Result:=true;
end;
function TDesignerMediator.ComponentIsSelectable(AComponent: TComponent
): Boolean;
begin
Result:=true;
end;
function TDesignerMediator.ComponentAtPos(p: TPoint; MinClass: TComponentClass;
Flags: TDMCompAtPosFlags): TComponent;
var
i: Integer;
Child: TComponent;
ClientArea: TRect;
ScrollOffset: TPoint;
ChildBounds: TRect;
Found: Boolean;
Children: TFPList;
Offset: TPoint;
begin
Result:=Root;
while Result<>nil do begin
GetClientArea(Result,ClientArea,ScrollOffset);
Offset:=GetComponentOriginOnForm(Result);
//DebugLn(['TDesignerMediator.ComponentAtPos Parent=',DbgSName(Result),' Offset=',dbgs(Offset)]);
OffsetRect(ClientArea,Offset.X,Offset.Y);
Children:=TFPList.Create;
try
GetChildComponents(Result,Children);
//DebugLn(['TDesignerMediator.ComponentAtPos Result=',DbgSName(Result),' ChildCount=',children.Count,' ClientArea=',dbgs(ClientArea)]);
Found:=false;
// iterate backwards (z-order)
for i:=Children.Count-1 downto 0 do begin
Child:=TComponent(Children[i]);
//DebugLn(['TDesignerMediator.ComponentAtPos Child ',DbgSName(Child)]);
if (MinClass<>nil) and (not Child.InheritsFrom(MinClass)) then
continue;
if (dmcapfOnlyVisible in Flags) and (not ComponentIsVisible(Child)) then
continue;
if (dmcapfOnlySelectable in Flags)
and (not ComponentIsSelectable(Child)) then
continue;
GetBounds(Child,ChildBounds);
if ComponentIsIcon(Child) then
OffsetRect(ChildBounds,ScrollOffset.X,
ScrollOffset.Y)
else
OffsetRect(ChildBounds,ClientArea.Left+ScrollOffset.X,
ClientArea.Top+ScrollOffset.Y);
//DebugLn(['TDesignerMediator.ComponentAtPos ChildBounds=',dbgs(ChildBounds),' p=',dbgs(p)]);
if PtInRect(ChildBounds,p) then begin
Found:=true;
Result:=Child;
break;
end;
end;
if not Found then exit;
finally
Children.Free;
end;
end;
end;
procedure TDesignerMediator.GetChildComponents(Parent: TComponent;
ChildComponents: TFPList);
begin
FCollectedChildren:=ChildComponents;
try
TDesignerMediator(Parent).GetChildren(@CollectChildren,Root);
finally
FCollectedChildren:=nil;
end;
end;
function TDesignerMediator.UseRTTIForMethods(aComponent: TComponent): boolean;
begin
Result:=false;
end;
procedure TDesignerMediator.InitComponent(AComponent, NewParent: TComponent;
NewBounds: TRect);
begin
SetBounds(AComponent,NewBounds);
TDesignerMediator(AComponent).SetParentComponent(NewParent);
end;
procedure TDesignerMediator.KeyDown(Sender: TControl; var Key: word;
Shift: TShiftState);
begin
end;
procedure TDesignerMediator.KeyUp(Sender: TControl; var Key: word;
Shift: TShiftState);
begin
end;
procedure TDesignerMediator.MouseDown(Button: TMouseButton; Shift: TShiftState;
p: TPoint; var Handled: boolean);
begin
end;
procedure TDesignerMediator.MouseMove(Shift: TShiftState; p: TPoint;
var Handled: boolean);
begin
end;
procedure TDesignerMediator.MouseUp(Button: TMouseButton; Shift: TShiftState;
p: TPoint; var Handled: boolean);
begin
end;
procedure TDesignerMediator.GetObjInspNodeImageIndex(APersistent: TPersistent;
var AIndex: integer);
begin
end;
initialization
IsFormDesign := @IsFormDesignFunction;
end.