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{
fpGUI - Free Pascal GUI Toolkit
Copyright (C) 2006 - 2010 See the file AUTHORS.txt, included in this
distribution, for details of the copyright.
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Description:
The resizer widget used in the form designer.
}
unit vfdresizer;
{$mode objfpc}{$H+}
interface
uses
Classes,
SysUtils,
fpg_base,
fpg_widget;
type
TwgResizer = class(TfpgWidget)
protected
wgdesigner: TObject;
procedure HandlePaint; override;
procedure HandleLMouseDown(x, y: integer; shiftstate: TShiftState); override;
procedure HandleLMouseUp(x, y: integer; shiftstate: TShiftState); override;
procedure HandleMouseMove(x, y: integer; btnstate: word; shiftstate: TShiftState); override;
public
direction: integer;
FDragging: boolean;
FDragPosX,
FDragPosY: TfpgCoord;
constructor Create(ACompDesigner: TObject; adirection: integer); reintroduce;
procedure Show;
end;
implementation
uses
vfddesigner,
vfdmain;
{ TwgResizer }
procedure TwgResizer.HandlePaint;
begin
Canvas.Clear(FBackgroundColor);
end;
procedure TwgResizer.HandleLMouseDown(x, y: integer; shiftstate: TShiftState);
begin
inherited HandleLMouseDown(x, y, shiftstate);
FDragging := True;
FDragPosX := x;
FDragPosy := y;
{$IFDEF MSWINDOWS}
CaptureMouse;
{$ENDIF}
end;
procedure TwgResizer.HandleLMouseUp(x, y: integer; shiftstate: TShiftState);
begin
inherited HandleLMouseUp(x, y, shiftstate);
FDragging := False;
{$IFDEF MSWINDOWS}
ReleaseMouse;
{$ENDIF}
end;
procedure TwgResizer.HandleMouseMove(x, y: integer; btnstate: word;
shiftstate: TShiftState);
var
dx,
dy: integer;
gridc: integer;
wgd: TWidgetDesigner;
begin
// inherited HandleMouseMove(x, y, btnstate, shiftstate);
if (not FDragging) or ((btnstate and MOUSE_LEFT) = 0) then
Exit;
dx := x - FDragPosX;
dy := y - FDragPosY;
wgd := TWidgetDesigner(wgdesigner);
gridc := maindsgn.GridResolution;
dx := dx - (dx mod gridc);
dy := dy - (dy mod gridc);
case direction of
1: wgd.Widget.MoveAndResizeBy(dx, dy, -dx, -dy);
2: wgd.Widget.MoveAndResizeBy(0, dy, 0, -dy);
3: wgd.Widget.MoveAndResizeBy(0, dy, dx, -dy);
4: wgd.Widget.MoveAndResizeBy(0, 0, dx, 0);
5: wgd.Widget.MoveAndResizeBy(0, 0, dx, dy);
6: wgd.Widget.MoveAndResizeBy(0, 0, 0, dy);
7: wgd.Widget.MoveAndResizeBy(dx, 0, -dx, dy);
8: wgd.Widget.MoveAndResizeBy(dx, 0, -dx, 0);
end;
wgd.UpdateResizerPositions;
wgd.FormDesigner.UpdatePropWin;
end;
constructor TwgResizer.Create(ACompDesigner: TObject; adirection: integer);
begin
inherited Create(TWidgetDesigner(aCompDesigner).Widget.Parent);
FBackgroundColor := $404040;
wgdesigner := aCompDesigner;
FDragging := False;
Width := 5;
Height := 5;
direction := adirection;
case direction of
1: MouseCursor := mcSizeSENW; // top left
2: MouseCursor := mcSizeNS; // top
3: MouseCursor := mcSizeSWNE; // top right
4: MouseCursor := mcSizeEW; // right
5: MouseCursor := mcSizeNWSE; // bottom right
6: MouseCursor := mcSizeNS; // bottom
7: MouseCursor := mcSizeNESW; // bottom left
8: MouseCursor := mcSizeEW; // left
end;
end;
procedure TwgResizer.Show;
begin
HandleShow;
end;
end.
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