prtprev.cpp

用于开发Atmel的AVR系列单片机的GCC集成开发环境

/**************************************************************************
Project: WinAVRIDE        Class: Print Preview
Copyright (C) 2005  Philipp Schober

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

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.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

History
19.Feb 2005 - First Release (V1.0)
****************************************************************************/

#include <vcl.h>
#pragma hdrstop

#include "PrtPrev.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "SynEditPrintPreview"
#pragma resource "*.dfm"
TPrtPreForm *PrtPreForm;
//---------------------------------------------------------------------------
__fastcall TPrtPreForm::TPrtPreForm(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TPrtPreForm::ShowWindow (void)
{
 SynEditPrintPreview1->UpdatePreview ();
 BackButton->Enabled = false;
 FirstButton->Enabled = false;
 if (SynEditPrintPreview1->PageCount == 1)
 {
  FwdButton->Enabled = false;
  LastButton->Enabled = false;
 }
 else
 {
  FwdButton->Enabled = true;
  LastButton->Enabled = true;
 }
 SynEditPrintPreview1->FirstPage ();
 scale = 100;
 ShowModal ();
}
//---------------------------------------------------------------------------
void __fastcall TPrtPreForm::FwdButtonClick(TObject *Sender)
{
 SynEditPrintPreview1->NextPage ();
 BackButton->Enabled = true;
 FirstButton->Enabled = true;
 if (SynEditPrintPreview1->PageNumber == SynEditPrintPreview1->PageCount)
 {
  FwdButton->Enabled = false;
  LastButton->Enabled = false;
 }
}
//---------------------------------------------------------------------------
void __fastcall TPrtPreForm::BackButtonClick(TObject *Sender)
{
 SynEditPrintPreview1->PreviousPage ();
 FwdButton->Enabled = true;
 LastButton->Enabled = true;
 if (SynEditPrintPreview1->PageNumber == 1)
 {
  BackButton->Enabled = false;
  FirstButton->Enabled = false;
 }
}
//---------------------------------------------------------------------------

void __fastcall TPrtPreForm::SynEditPrintPreview1MouseUp(TObject *Sender,
      TMouseButton Button, TShiftState Shift, int X, int Y)
{
 switch (Button)
 {
  case mbLeft: if (scale <= 400) scale *= 2;
               SynEditPrintPreview1->ScalePercent = scale;
               break;
  case mbRight: if (scale >= 25) scale /= 2;
                SynEditPrintPreview1->ScalePercent = scale;
                break;
  case mbMiddle: scale = 100;
                 SynEditPrintPreview1->ScalePercent = scale;
                 break;
 }
 SynEditPrintPreview1->UpdatePreview ();
 SynEditPrintPreview1->Invalidate ();
}
//---------------------------------------------------------------------------
void __fastcall TPrtPreForm::FirstButtonClick(TObject *Sender)
{
 SynEditPrintPreview1->FirstPage ();
 SynEditPrintPreview1->UpdatePreview ();
 SynEditPrintPreview1->Invalidate ();
 FwdButton->Enabled = true;
 BackButton->Enabled = false;
 LastButton->Enabled = true;
 FirstButton->Enabled = false;
}
//---------------------------------------------------------------------------
void __fastcall TPrtPreForm::LastButtonClick(TObject *Sender)
{
 SynEditPrintPreview1->LastPage ();
 SynEditPrintPreview1->UpdatePreview ();
 SynEditPrintPreview1->Invalidate ();
 FwdButton->Enabled = false;
 BackButton->Enabled = true;
 LastButton->Enabled = false;
 FirstButton->Enabled = true;
}
//---------------------------------------------------------------------------
void __fastcall TPrtPreForm::ZFullButtonClick(TObject *Sender)
{
 SynEditPrintPreview1->ScaleMode = pscPageWidth;
}
//---------------------------------------------------------------------------