Added a class for printing with syntax highlighting
This commit is contained in:
Zane U. Ji
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/*
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* Copyright 2014 Zane U. Ji.
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*
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* This file is part of Xml Copy Editor.
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*
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* Xml Copy Editor is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* Xml Copy Editor is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Xml Copy Editor; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <wx/wxprec.h>
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#ifndef WX_PRECOMP
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#include <wx/wx.h>
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#include <wx/log.h>
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#endif
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#include "myprintout.h"
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#include "xmldoc.h"
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MyPrintout::MyPrintout ( XmlDoc *doc, const wxString &title )
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: wxPrintout ( title )
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, mDoc ( doc )
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, mMinPage ( 1 )
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, mMaxPage ( 0 )
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{
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wxASSERT ( doc );
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}
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MyPrintout::~MyPrintout()
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{
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}
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void MyPrintout::OnPreparePrinting()
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{
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if ( !mDoc )
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return;
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mDoc->SetPrintWrapMode ( wxSTC_WRAP_WORD );
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mDoc->SetPrintMagnification ( mDoc->GetZoom() );
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SetupDC();
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//Lets make a guess as to how many pages there are based on the default printer.
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mMaxPage = CalcMaxPage();
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mMinPage = 1; // start printing at page# 1
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// default preparation
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wxPrintout::OnPreparePrinting();
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}
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void MyPrintout::OnBeginPrinting()
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{
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wxPrintout::OnBeginPrinting();
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SetupDC();
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}
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void MyPrintout::OnEndPrinting()
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{
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wxPrintout::OnEndPrinting();
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}
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bool MyPrintout::HasPage ( int nPage )
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{
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return ( nPage >= mMinPage && nPage <= mMaxPage );
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}
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void MyPrintout::GetPageInfo
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( int *minPage
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, int *maxPage
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, int *pageFrom
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, int *pageTo
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)
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{
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*minPage = mMinPage;
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*maxPage = mMaxPage;
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*pageFrom = mMinPage;
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*pageTo = mMaxPage;
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}
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bool MyPrintout::OnPrintPage ( int page )
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{
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wxDC *dc = GetDC();
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if ( !( dc && mDoc ) )
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return false;
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int header, footer;
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dc->SetLogicalOrigin ( -mPrintRect.x, -mPrintRect.y );
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header = PrintHeader(); //print the header
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dc->SetLogicalOrigin ( -mPrintRect.x, -mPrintRect.height - mPrintRect.y );
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footer = PrintFooter(); //Print the footer
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mPrintRect.y += header;
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mPrintRect.height -= header + footer;
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dc->SetLogicalOrigin ( 0, 0 );
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mDoc->FormatRange ( true, mStartPositions [ page - 1 ], mDoc->GetLength(),
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dc, dc, mPrintRect, mPageRect );
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return true;
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}
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void MyPrintout::SetupDC()
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{
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wxDC *dc = GetDC();
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wxASSERT ( dc && mDoc );
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// From wxWidgets
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// get printer and screen sizing values
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wxSize ppiScr;
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GetPPIScreen ( &ppiScr.x, &ppiScr.y );
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if ( ppiScr.x == 0 ) { // most possible guess 96 dpi
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ppiScr.x = 96;
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ppiScr.y = 96;
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}
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wxSize ppiPrt;
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GetPPIPrinter ( &ppiPrt.x, &ppiPrt.y );
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if ( ppiPrt.x == 0 ) { // scaling factor to 1
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ppiPrt.x = ppiScr.x;
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ppiPrt.y = ppiScr.y;
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}
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wxSize dcSize = dc->GetSize();
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wxSize pageSize;
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GetPageSizePixels (&pageSize.x, &pageSize.y);
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// set user scale
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double scaleX = double ( ppiPrt.x ) * dcSize.x /
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( double ( ppiScr.x ) * pageSize.x );
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double scaleY = double ( ppiPrt.y ) * dcSize.y /
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( double ( ppiScr.y ) * pageSize.y );
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dc->SetUserScale ( scaleX, scaleY );
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mPageRect = GetLogicalPageRect();
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mPrintRect = GetLogicalPageMarginsRect ( GetPageData() );
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}
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int MyPrintout::CalcMaxPage()
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{
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mStartPositions.clear();
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wxDC *dc = GetDC();
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if ( !( dc && mDoc ) )
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return 0;
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if ( mPrintRect.IsEmpty() )
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return 0;
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int start = 0;
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int end = mDoc->GetLength();
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while ( start < end )
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{
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mStartPositions.push_back ( start );
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start = mDoc->FormatRange ( false, start, end, dc, dc
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, mPrintRect, mPageRect );
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}
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return mStartPositions.size();
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}
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// Returns the height of the header
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int MyPrintout::PrintHeader()
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{
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return 0;
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}
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// Returns the height of the footer
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int MyPrintout::PrintFooter()
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{
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return 0;
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}
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wxPageSetupDialogData &MyPrintout::GetPageData()
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{
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static wxPageSetupDialogData data;
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static bool bInitialized = false;
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if ( !bInitialized )
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{
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// Set page margins that are in mm. 25.4mm = 1"
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data.SetMarginTopLeft ( wxPoint ( 15, 15 ) );
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data.SetMarginBottomRight ( wxPoint ( 15, 15 ) );
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data.SetPaperId ( wxPAPER_A4 );
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bInitialized = true;
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}
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return data;
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}
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@ -0,0 +1,63 @@
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/*
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* Copyright 2014 Zane U. Ji.
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*
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* This file is part of Xml Copy Editor.
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*
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* Xml Copy Editor is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* Xml Copy Editor is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Xml Copy Editor; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef MYPRINTOUT_H_
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#define MYPRINTOUT_H_
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#include <wx/prntbase.h>
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#include <vector>
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class XmlDoc;
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class MyPrintout: public wxPrintout
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{
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public:
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MyPrintout ( XmlDoc *doc, const wxString &title );
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virtual ~MyPrintout();
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virtual void OnPreparePrinting();
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virtual void OnBeginPrinting();
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virtual void OnEndPrinting();
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virtual bool HasPage ( int nPage );
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virtual bool OnPrintPage ( int nPage );
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virtual void GetPageInfo ( int *minPage, int *maxPage, int *pageFrom
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, int *pageTo );
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static wxPageSetupDialogData &GetPageData();
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protected:
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void SetupDC();
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int CalcMaxPage();
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// Returns the height of the header
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int PrintHeader();
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// Returns the height of the footer
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int PrintFooter();
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protected:
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XmlDoc *mDoc;
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int mMinPage, mMaxPage; // 1 based
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std::vector<int> mStartPositions; // Start positions of each page
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wxRect mPrintRect, mPageRect;
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};
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#endif /* MYPRINTOUT_H_ */
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