Chip 2001 October/Chip_2001-10_cd1.bin/zkuste/delphi/nastroje/d3456/KBMWABD.ZIP/WABD_FormSecEditor.pas

Pascal/Delphi Source File | 2001-07-16 | 16KB | 595 lines

unit WABD_FormSecEditor;

interface

{$I kbmWABD.inc}

{$IFDEF VER100}
{$ASSERTIONS ON}
{$ENDIF}

uses
{$ifdef LEVEL6}
  DesignIntf,
{$else}
  DsgnIntf,
{$endif}
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  WABD_Objects, ExtCtrls, Buttons, StdCtrls, ShellAPI;

type
   TInvisWin = class(TPanel)
   protected
      FSel      : boolean;
      procedure SetSel(b: boolean);
      procedure WndProc(var Message: TMessage); override;
      procedure CreateParams(var Params: TCreateParams); override;
      procedure PaintSquares(var ps: TPaintStruct);
   public
      Buddy     : TControl;
      property  Selected: boolean read FSel write SetSel;
   end;

  TFormSectionEditor = class(TForm)
    ToolPanel: TPanel;
    AnchorSpeed: TSpeedButton;
    ImageSpeed: TSpeedButton;
    LabelSpeed: TSpeedButton;
    MemoSpeed: TSpeedButton;
    ButtonSpeed: TSpeedButton;
    EditSpeed: TSpeedButton;
    ComboSpeed: TSpeedButton;
    RadioSpeed: TSpeedButton;
    ListSpeed: TSpeedButton;
    CheckSpeed: TSpeedButton;
    HTMLEmbedSpeed: TSpeedButton;
    PreviewBut: TButton;
    GridBut: TSpeedButton;
    ScrollBox1: TScrollBox;
    SelectSpeed: TSpeedButton;
    LiveImageSpeed: TSpeedButton;
    pStatus: TPanel;
    HTMLFileEmbedSpeed: TSpeedButton;
    UploadFileSpeed: TSpeedButton;
    procedure PanelMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure PanelMouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure PanelMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure FormCreate(Sender: TObject);
    procedure SecButSpeedClick(Sender: TObject);
    procedure GridButClick(Sender: TObject);
    procedure FormKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure PreviewButClick(Sender: TObject);
    procedure ScrollBox1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure PanelDblClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
{$ifdef LEVEL6}
    MyDesigner   : IDesigner;
{$else}
 {$ifdef LEVEL5}
    MyDesigner   : IFormDesigner;
 {$else}
  {$ifdef LEVEL4}
    MyDesigner   : IFormDesigner;
  {$else}
   {$ifdef LEVEL3}
    MyDesigner   : TFormDesigner; // Delphi 3, C++ Builder 3
   {$endif}
  {$endif}
 {$endif}
{$endif}

    FS         : TWABD_FormSection;
    DownX      : integer;
    DownY      : integer;
    Moving     : boolean;
    Sizing     : boolean;
    DetectChanges : boolean;
    OldSel     : TInvisWin;
    ViewPanel  : TPaintPanel;
    LastTag    : integer;
    LookFor    : TWABD_SectionObject;
    procedure  Init;
    function   GetObj(Tag: integer): TWABD_SectionObject;
    procedure  ReflectedNotify(Sender: TObject; AComponent: TComponent; Operation: TOperation);
    procedure  ChildChanged(Sender: TObject);
    procedure  SetPanel(p: TInvisWin; Active: boolean);
    procedure  SetSpecialProperties(c: TControl);
    procedure  SetAllProperties(c: TWinControl);
  end;

var
  FormSectionEditor: TFormSectionEditor;

implementation

uses WABD_FormEditor, TypInfo;

{$R *.DFM}

function GetRegion(Obj: TWABD_SectionObject; X, Y: integer): integer;
const
   BORDER = 5;
var
   px, py : integer;
begin
   px := 1;
   if X < BORDER then px := 0;
   if X > Obj.Width-BORDER then px := 2;

   py := 1;
   if Y < BORDER then py := 0;
   if Y > Obj.Height-BORDER then py := 2;

   Result := py * 3 + px + 1;
end;

function GetRegCursor(Reg: integer): TCursor;
begin
   Result := crDefault;
   case Reg of
      1, 9  : Result := crSizeNWSE;
      3, 7  : Result := crSizeNESW;
      2, 8  : Result := crSizeNS;
      4, 6  : Result := crSizeWE;
      5     : Result := crDefault;
   end;
end;

function TFormSectionEditor.GetObj(Tag: integer): TWABD_SectionObject;
begin
   if (Tag-1 < 0) or (Tag-1 >= FS.ChildCount) then begin
      Result := nil;
      exit;
   end;

   Result := fs.Children[Tag-1] as TWABD_SectionObject;
   Assert(Result<>nil, 'Result = nil');
end;

procedure TFormSectionEditor.SetPanel(p: TInvisWin; Active: boolean);
begin
   if Active then begin
      p.Color := clActiveCaption;
      p.Font.Color := clCaptionText;
      if OldSel<>nil then SetPanel(OldSel, False);
      OldSel := p;
      (p as TInvisWin).Selected := True;
   end else begin
      p.Color := clInactiveCaption;
      p.Font.Color := clInactiveCaptionText;
      (p as TInvisWin).Selected := False;
   end;
end;

procedure TFormSectionEditor.Init;
var
   i     : integer;
   c     : TControl;
   Child : TWABD_Object;
begin
   if not DetectChanges then exit;

   OldSel := nil;
   Caption := 'WABD Form Section Editor - ' + fs.Name;

   // Remove the old ones first
   for i := ScrollBox1.ControlCount-1 downto 0 do begin
      c := ScrollBox1.Controls[i];
      c.Free;
   end;

   FS.OnChange := ChildChanged;
   for i := 0 to FS.ChildCount-1 do begin
      Child          := FS.Children[i] as TWABD_SectionObject;
      Child.OnChange := ChildChanged;
   end;

   c := FS.Object_To_Control(ScrollBox1);
   c.Width := 1024;
   c.Height := 1024;
   ViewPanel := c as TPaintPanel;
   ViewPanel.DesignMode := GridBut.Down;
   ViewPanel.OnMouseDown := ScrollBox1MouseDown;

   SetAllProperties(ViewPanel);
end;

procedure TFormSectionEditor.SetSpecialProperties(c: TControl);
var
   iw  : TInvisWin;
   Sel : boolean;
begin
   if (c is TPaintPanel) then begin
      (c as TPaintPanel).DrawPic := False;
      exit;
   end;

   Sel := GetObj(c.Tag) = LookFor;

   iw := TInvisWin.Create(Self);
   iw.Parent := c.Parent;
   iw.Buddy  := c;
   iw.Left   := c.Left;
   iw.Top    := c.Top;
   iw.Width  := c.Width;
   iw.Height := c.Height;
   iw.OnMouseDown := PanelMouseDown;
   iw.OnMouseMove := PanelMouseMove;
   iw.OnMouseUp   := PanelMouseUp;
   iw.OnDblClick  := PanelDblClick;
   SetPanel(iw, Sel);
end;

procedure TFormSectionEditor.SetAllProperties(c: TWinControl);
var
   i     : integer;
   Child : TControl;
begin
   SetSpecialProperties(c);
   for i := 0 to c.ControlCount-1 do begin
      Child := c.Controls[i];
      if (Child is TWinControl) then begin
         SetAllProperties(Child as TWinControl);
      end else begin
         SetSpecialProperties(Child);
      end;
   end;
end;

procedure TFormSectionEditor.PanelMouseDown(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
   s : TWABD_SectionObject;
   p : TInvisWin;
   x1,y1:integer;
begin
   DownX := X;
   DownY := Y;

   // Get component pointed at.
   p := Sender as TInvisWin;
   s := GetObj(p.Buddy.Tag);
   Assert(s<>nil, 's = nil');
   MyDesigner.SelectComponent(s);

   // Check if sizing or moving.
   x1 := p.Left + (X-DownX);
   y1 := p.Top  + (Y-DownY);

   // Check if moved at all. If not, just exit.
   if (X>=p.Width-5) or (Y>=p.Height-5) then
      Sizing:=true
   else
       Moving:=true;
//ShowMessage(Format('X,Y=%d,%d, p.Left,p.Top=%d,%d pWidth,p.Height=%d,%d',[X,Y,p.Left,p.Top,p.Width,p.Height]));

   // Show selection.
   SetPanel(p, True);
   p.Buddy.BringToFront;
   p.BringToFront;
   OldSel := p;
end;

procedure TFormSectionEditor.PanelMouseMove(Sender: TObject;
  Shift: TShiftState; X, Y: Integer);
var
   p : TInvisWin;
   s : TWABD_SectionObject;
   x1,y1: integer;
   w, h : integer;
begin
   if not (Moving or Sizing) then exit;

   // Calculate placement/size.
   p := Sender as TInvisWin;
   x1 := (X-DownX);
   y1 := (Y-DownY);
   if GridBut.Down then begin
      x1 := (x1 div FS.GridX) * FS.GridX;
      y1 := (y1 div FS.GridY) * FS.GridY;
   end;

   // If moving.
   if Moving then
   begin
        // Check if moved at all. If not, just exit.
        x1:=x1+p.Left;
        y1:=y1+p.Top;
        if (x1=p.Left) and (y1=p.Top) then exit;

        w:=p.Width;
        h:=p.Height;
   end
   else
   // Sizing.
   begin
        // If not change of size.
        if (p.Width=X) and (p.Height=Y) then exit;

        x1:=p.Left;
        y1:=p.Top;
        w:=X;
        h:=Y;
   end;

   // OK, moved or sized, update component.
   p.SetBounds(x1, y1, w, h);
   p.Buddy.SetBounds(x1, y1, w, h);
   p.Invalidate;
   p.Buddy.Invalidate;
   s := GetObj(p.Buddy.Tag);
   DetectChanges := False;
   s.LeftPos := p.Left;
   s.TopPos  := p.Top;
   s.Width   := p.Width;
   s.Height  := p.Height;
   p.Buddy.Refresh;
   DetectChanges := True;
   MyDesigner.Modified;
end;

procedure TFormSectionEditor.PanelMouseUp(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
   p : TInvisWin;
   w,h:integer;
   s : TWABD_SectionObject;
begin
   // Check if to resize to grid.
   if Sizing and GridBut.Down then
   begin
        p := Sender as TInvisWin;
        w := (p.Buddy.Width div FS.GridX) * FS.GridX;
        h := (p.Buddy.Height div FS.GridY) * FS.GridY;
        if w<=0 then w:=FS.GridX;
        if h<=0 then h:=FS.GridY;
        s := GetObj(p.Buddy.Tag);
        p.SetBounds(p.Left, p.Top, w, h);
        p.Buddy.SetBounds(p.Left, p.Top, w, h);
        s.Width   := p.Width;
        s.Height  := p.Height;
        p.Invalidate;
        p.Buddy.Invalidate;
   end;
   Sizing := False;
   Moving := False;
end;

procedure TFormSectionEditor.FormCreate(Sender: TObject);
begin
   Moving := False;
   DetectChanges := True;
   OldSel := nil;
   ViewPanel := nil;
   LastTag := -1;
end;

procedure TFormSectionEditor.ReflectedNotify(Sender: TObject; AComponent: TComponent; Operation: TOperation);
begin
   if (AComponent = FS) and (Operation = opRemove) then begin
      FS := nil;
      Visible := False;
   end;

   if AComponent is TWABD_SectionObject then
      if (AComponent as TWABD_SectionObject).Parent = FS then Init;
end;

procedure TFormSectionEditor.ChildChanged(Sender: TObject);
begin
   if not DetectChanges then exit;

   if (Sender is TWABD_SectionObject) then
      if (Sender as TWABD_SectionObject).Parent = FS then Init;

   if Sender = FS then Init;
end;

procedure TFormSectionEditor.SecButSpeedClick(Sender: TObject);
begin
   // (Owner as TWABDFormEditor).AddSectionLevel((Sender as TControl).Tag);
   LastTag := (Sender as TControl).Tag;
end;


procedure TFormSectionEditor.GridButClick(Sender: TObject);
begin
   ViewPanel.DesignMode := GridBut.Down;
   ViewPanel.Invalidate;
end;

procedure TFormSectionEditor.FormKeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
var
   c : TWABD_Object;
begin
   if (OldSel<>nil) and (Key = 46) then begin
      c := GetObj(OldSel.Buddy.Tag);
      // if c<>nil then ShowMessage(Format('Name, Class = %s, %s', [c.name, c.ClassName]));
      c.Free;
      MyDesigner.SelectComponent(nil);
   end;
end;

procedure TFormSectionEditor.PreviewButClick(Sender: TObject);
var
   f    : string;
   h    : string;
   fstm : TFileStream;
   rc   : integer;
begin
   f := 'LocalTemp.htm';
   h := '<HTML><BODY>' + FS.Object_To_HTML + '</BODY></HTML>';
   fstm := TFileStream.Create(f, fmCreate or fmOpenWrite or fmShareDenyWrite);
   fstm.Write(h[1], Length(h));
   fstm.Free;

   rc := ShellExecute(Handle, 'open', PChar(f), nil, nil, SW_SHOWNORMAL);
   if (rc <= 32) then ShowMessage('Unable to execute: ' + f + #13#10 + 'Browser not installed?');
end;



procedure TInvisWin.WndProc(var Message: TMessage);
var
   ps : TPaintStruct;
begin
   case Message.Msg of
      WM_ERASEBKGND: Message.Result := 1;
      WM_PAINT: begin
         BeginPaint(Handle, ps);
         if FSel then PaintSquares(ps);
         EndPaint(Handle, ps);
         Message.Result := 1;
      end;
   else
      inherited WndProc(Message);
   end;
end;

procedure TInvisWin.PaintSquares(var ps: TPaintStruct);
var
   c      : TCanvas;
   i      : integer;
   mx, my : integer;
   x, y   : integer;
   R      : TRect;
begin
   c := TCanvas.Create;
   c.Handle := ps.hdc;

   c.Brush.Color := clBlack;
   mx := Width div 2;
   my := Height div 2;

   for i := 0 to 7 do begin
      x := 0;
      y := 0;
      case i of
         0, 1, 2  : y := 0;
         3, 4     : y := my - 2;
         5, 6, 7  : y := Height - 5;
      end;
      case i of
         0, 3, 5  : x := 0;
         1, 6     : x := mx - 2;
         2, 4, 7  : x := Width - 5;
      end;
      R := Rect(x, y, x+5, y+5);
      c.FillRect(R);
   end;

   c.Free;
end;

procedure TInvisWin.SetSel(b: boolean);
begin
   FSel := b;
   Invalidate;
   if Buddy<>nil then Buddy.Invalidate;
end;

procedure TInvisWin.CreateParams(var Params: TCreateParams);
begin
   inherited;
   Params.ExStyle := Params.ExStyle or WS_EX_TRANSPARENT;
end;

procedure TFormSectionEditor.ScrollBox1MouseDown(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
   wo : TWABD_SectionObject;
begin
   // Check if to select formsection.
   if LastTag = -1 then
   begin
        MyDesigner.SelectComponent(FS);
        if OldSel<>nil then SetPanel(OldSel, False);
        OldSel := nil;
        exit;
   end;

   // Else add a component.
   DetectChanges := False;
   wo := (Owner as TWABDFormEditor).AddSectionLevel(LastTag);
   SelectSpeed.Down := True;
   LastTag := -1;

   if GridBut.Down then begin
      X := (X div FS.GridX) * FS.GridX;
      Y := (Y div FS.GridY) * FS.GridY;
   end;

   wo.LeftPos := X;
   wo.TopPos  := Y;
   LookFor := wo;
   DetectChanges := True;
   Init;
end;

procedure TFormSectionEditor.PanelDblClick(Sender: TObject);
var
   p        : TInvisWin;
   s        : TWABD_Object;
   nm       : TMethod;
   MethName : string;
   wb       : TWABD_Button;
   wi       : TWABD_Base_Image;
   wt       : TWABD_Table;
begin
   p := Sender as TInvisWin;
   s := GetObj(p.Buddy.Tag);
   Assert(s<>nil, 's = nil');

   if s is TWABD_Button then begin
      wb := s as TWABD_Button;
      if Assigned(wb.OnUserClick) then begin
         nm := TMethod(wb.OnUserClick);
         MethName := MyDesigner.GetMethodName(nm);
      end else begin
         MethName := s.Name+'UserClick';
         nm := MyDesigner.CreateMethod(MethName, GetTypeData(TypeInfo(TNotifyEvent)));
         wb.OnUserClick := TNotifyEvent(nm);
      end;
      MyDesigner.ShowMethod(MethName);
   end;

   if s is TWABD_Base_Image then begin
      wi := s as TWABD_Base_Image;
      if Assigned(wi.OnMouseDown) then begin
         nm := TMethod(wi.OnMouseDown);
         MethName := MyDesigner.GetMethodName(nm);
         ShowMessage('MethName = ' + MethName);
      end else begin
         MethName := s.Name+'MouseDown';
         nm := MyDesigner.CreateMethod(MethName, GetTypeData(TypeInfo(TWABD_MouseDown)));
         wi.OnMouseDown := TWABD_MouseDown(nm);
      end;
      MyDesigner.ShowMethod(MethName);
   end;

   if s is TWABD_Table then begin
      wt := s as TWABD_Table;
      if Assigned(wt.OnUserClick) then begin
         nm := TMethod(wt.OnUserClick);
         MethName := MyDesigner.GetMethodName(nm);
      end else begin
         MethName := s.Name+'UserClick';
         nm := MyDesigner.CreateMethod(MethName, GetTypeData(TypeInfo(TWABDTableClick)));
         wt.OnUserClick := TWABDTableClick(nm);
      end;
      MyDesigner.ShowMethod(MethName);
   end;
end;


end.