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PDFwin.cpp
1080 lines (888 loc) · 26.3 KB
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PDFwin.cpp
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//
// PDFwin.cpp
//
// Copyright 2004 by Taesoo Kwon.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
#include "stdafx.h"
#include "PDFwin.h"
#include <vector>
#include "utility/FlLayout.h"
#include "utility/FltkAddon.h"
// poppler headers
#include "PDFDoc.h"
#include "GlobalParams.h"
// #include "GooMutex.h"
#include <goo/GooString.h>
#include "Link.h"
#include "Object.h" /* must be included before SplashOutputDev.h */
#include "PDFDoc.h"
#include <splash/SplashBitmap.h>
#include <SplashOutputDev.h>
#include "TextOutputDev.h"
#include "NullOutputDev.h"
#include "SplashMod.h"
#include "image/Image.h"
#include "image/ImagePixel.h"
#include "math/Operator.h"
#include <cstdlib>
#include "ImageSegmentation.h"
PDFmodel* gModel=NULL;
enum {TC_c=0, TC_x, TC_y, TC_w, TC_h, TC_fx, TC_fy};
// #define DEBUG_FONT_DETECTION
#define USE_FONT_DETECTION
// #define USE_NULLOUTPUTDEV
class PDFmodel
{
public:
PDFDoc* _pdfDoc ;
SplashOutputDev* _outputDev;
NullOutputDev* _nullOutputDev;
std::vector<CImage* > _bmpCache;
std::vector<intmatrixn* > _textCache;
int _textCacheState;
PDFmodel()
{
if (!globalParams)
{
printf("error loading pdf");
return ;
}
_pdfDoc =NULL;
_outputDev=NULL;
_nullOutputDev=NULL;
_textCacheState=-1;// do not cache.
gModel=this;
}
~PDFmodel()
{
delete _pdfDoc;
delete _outputDev;
delete _nullOutputDev;
gModel=NULL;
}
bool load(const char* fileName)
{
delete _pdfDoc;
delete _outputDev;
delete _nullOutputDev;
for (int i=0; i<_bmpCache.size(); i++) delete _bmpCache[i];
_bmpCache.resize(0);
for (int i=0; i<_textCache.size(); i++) delete _textCache[i];
_textCache.resize(0);
_pdfDoc= new PDFDoc(new GooString(fileName), NULL, NULL, NULL);
if (!_pdfDoc->isOk()) {
printf("error loading pdf");
return false;
}
GBool bitmapTopDown = gTrue;
SplashColor white;
white[0]=0xff;
white[1]=0xff;
white[2]=0xff;
// _outputDev = new SplashOutputDev_mod(splashModeRGB8, 4, gFalse, white, bitmapTopDown);
_outputDev = new SplashOutputDev(splashModeRGB8, 4, gFalse, white, bitmapTopDown);
if(!_outputDev)
{
printf("error loading pdf");
return false;
}
#ifdef USE_NULLOUTPUTDEV
_nullOutputDev=new NullOutputDev();
#endif
#ifdef POPPLER_VERSION
_outputDev->startDoc(_pdfDoc);
#else
_outputDev->startDoc(_pdfDoc->getXRef());
#endif
_bmpCache.resize(_pdfDoc->getNumPages());
for (int i=0; i<_bmpCache.size(); i++) _bmpCache[i]=NULL;
_textCache.resize(_pdfDoc->getNumPages());
for (int i=0; i<_textCache.size(); i++) _textCache[i]=NULL;
return true;
}
bool cacheValid(int w, int h, int pageNo)
{
// empty cache when too many pages are cached.
int count=0;
for(int i=0; i<_bmpCache.size(); i++)
{
if(_bmpCache[i])
count++;
}
const int MAX_CACHE=10; // due to memory overhead.
if(count>MAX_CACHE)
{
for(int i=0; i<_bmpCache.size(); i++)
{
delete _bmpCache[i]; _bmpCache[i]=NULL;
delete _textCache[i]; _textCache[i]=NULL;
}
}
if(_bmpCache.size()<=pageNo)
return false;
CImage* bmp=_bmpCache[pageNo];
if(bmp==NULL
|| (bmp->GetWidth()>w || bmp->GetHeight()>h)
|| (bmp->GetWidth()<w && bmp->GetHeight()<h))
return false;
return true;
}
double pageCropWidth(int pageNo)
{
int rotate=_pdfDoc->getPageRotate(pageNo+1);
if(rotate==90 || rotate==270)
return _pdfDoc->getPageCropHeight(pageNo+1);
return _pdfDoc->getPageCropWidth(pageNo+1);
}
double pageCropHeight(int pageNo)
{
int rotate=_pdfDoc->getPageRotate(pageNo+1);
if(rotate==90 || rotate==270)
return _pdfDoc->getPageCropWidth(pageNo+1);
return _pdfDoc->getPageCropHeight(pageNo+1);
}
double calcDPI_width(int w, int pageNo)
{
return (double)72* w/pageCropWidth(pageNo);
}
double calcDPI_height(int h, int pageNo)
{
return (double)72* h/pageCropHeight(pageNo);
}
int calcHeight_DPI(double DPI, int pageNo)
{
int h=int(DPI*pageCropHeight(pageNo)/double(72)+0.5);
return h;
}
int calcWidth_DPI(double DPI, int pageNo)
{
int w=int(DPI*pageCropWidth(pageNo)/double(72)+0.5);
return w;
}
// 0 <= pageNo <numPage
CImage* getPage(int w, int h, int pageNo)
{
if(!cacheValid(w,h,pageNo))
{
// poppler uses 1 indexing for pageNo.
double DPI_W=calcDPI_width(w, pageNo);
double DPI_H=calcDPI_height(h, pageNo);
double DPI=MIN(DPI_W, DPI_H);
delete _textCache[pageNo]; _textCache[pageNo]=new intmatrixn();
_textCacheState=pageNo;
//_pdfDoc->getPageRotate(pageNo+1)
_pdfDoc->displayPage(_outputDev, pageNo+1, DPI, DPI, 0, gFalse, gTrue, gFalse);
#ifdef USE_NULLOUTPUTDEV
_nullOutputDev->setInfo(_pdfDoc->getPageRotate(pageNo+1),
_pdfDoc->getCatalog()->getPage(pageNo+1)->getCropBox()->x1,
_pdfDoc->getCatalog()->getPage(pageNo+1)->getCropBox()->y1,
_pdfDoc->getPageCropWidth(pageNo+1),
_pdfDoc->getPageCropHeight(pageNo+1),
_outputDev->getBitmap()->getWidth(),
_outputDev->getBitmap()->getHeight());
_pdfDoc->displayPage(_nullOutputDev, pageNo+1, DPI, DPI, 0, gFalse, gTrue, gFalse);
#endif
_textCacheState=-1;
/*//_pdfDoc->displayPageSlice(_outputDev, pageNo+1, DPI, DPI, 0, gFalse, gTrue, gFalse, 20,20, 400,400);
if(zoom2<zoom1)
{
if(h==_outputDev->getBitmap()->getHeight())
bOkay=true;
else
{
vDPI=72.0*h/_pdfDoc->getPageCropHeight(pageNo+1);
}
}
else
{
if(w==_outputDev->getBitmap()->getWidth())
bOkay=true;
else
{
double tt=72*w/_pdfDoc->getPageCropHeight(pageNo+1);
}
}
}
while(!bOkay);*/
SplashBitmap *temp=_outputDev->takeBitmap();
CImage* ptr=new CImage();
ptr->SetData(temp->getWidth(), temp->getHeight(), temp->getDataPtr(), temp->getRowSize());
delete _bmpCache[pageNo]; _bmpCache[pageNo]=ptr;
delete temp;
}
return _bmpCache[pageNo];
}
void notifyDraw(int c, int x, int y, int w, int h, int fx, int fy)
{
#ifdef USE_FONT_DETECTION
if(_textCacheState!=-1)
{
// ij�� �ϸ� �ȵɵ�.. �ʹ� ����. �׳� ����???.
//printf("%c", c);
//fflush(stdout);
const int MAX_CHAR_PER_PAGE=30000;
if(_textCache[_textCacheState]->rows()<MAX_CHAR_PER_PAGE)
_textCache[_textCacheState]->pushBack(intvectorn(7, c, x, y, w, h, fx, fy));
}
#endif
}
};
void notifyDraw(int c, int x, int y, int w, int h, int fx, int fy)
{
if(gModel)
{
gModel->notifyDraw(c,x,y,w,h,fx,fy);
}
}
double PDFwin::pageCropWidth(int pageNo)
{
return mModel->pageCropWidth(pageNo);
}
double PDFwin::pageCropHeight(int pageNo)
{
return mModel->pageCropHeight(pageNo);
}
int PDFwin::getNumPages()
{
return mModel->_pdfDoc ->getNumPages();
}
int PDFwin::getNumRects()
{
return mRects.size();
}
SelectionRectangle& find(std::list<SelectionRectangle>& mRects, int rectNo)
{
int _rectNo=0;
SelectionRectangle* R;
for(std::list<SelectionRectangle>::iterator i=mRects.begin();
i!=mRects.end(); ++i)
{
if(_rectNo==rectNo)
{
R=&(*i);
break;
}
_rectNo++;
}
return *R;
}
double PDFwin::getDPI_width(int pageNo, int rectNo, int width)
{
SelectionRectangle& rect=::find(mRects, rectNo);
int totalWidth=int((double)width/(rect.p2.x-rect.p1.x)+0.5);
double DPI = mModel->calcDPI_width(totalWidth, pageNo);
return DPI;
}
void PDFwin::getRectSize(int pageNo, int rectNo, SelectionRectangle& rect)
{
rect=::find(mRects, rectNo);
}
void PDFwin::getRectImage_width(int pageNo, int rectNo, int width, CImage& image)
{
SelectionRectangle& rect=::find(mRects, rectNo);
PDFDoc* _pdfDoc=mModel->_pdfDoc ;
SplashOutputDev* _outputDev=mModel->_outputDev;
int totalWidth=int((double)width/(rect.p2.x-rect.p1.x)+0.5);
FlLayout* layout=mLayout->findLayout("Automatic segmentation");
int maxWidth=int((double)width/(1.0/(layout->findSlider("N columns")->value()+1.0))+0.5);
totalWidth=MIN(maxWidth, totalWidth);
double DPI = mModel->calcDPI_width(totalWidth, pageNo);
int totalHeight=mModel->calcHeight_DPI(DPI, pageNo);
int left=int(rect.p1.x*(double)totalWidth+0.5);
int top=int(rect.p1.y*(double)totalHeight+0.5);
int right=int(rect.p2.x*(double)totalWidth+0.5);
int bottom=int(rect.p2.y*(double)totalHeight+0.5);
_pdfDoc->displayPageSlice(_outputDev, pageNo+1, DPI, DPI, 0, gFalse, gTrue, gFalse, left,top, right-left,bottom-top);
SplashBitmap* bmp=_outputDev->takeBitmap();
image.SetData(bmp->getWidth(), bmp->getHeight(), bmp->getDataPtr(), bmp->getRowSize());
//ASSERT(image.GetWidth()==width || totalWidth==maxWidth);
ASSERT(image.GetHeight()==bottom-top);
delete bmp;
}
double PDFwin::getDPI_height(int pageNo, int rectNo, int height)
{
SelectionRectangle& rect=::find(mRects, rectNo);
int totalHeight=int((double)height/(rect.p2.y-rect.p1.y)+0.5);
double DPI = mModel->calcDPI_height(totalHeight, pageNo);
return DPI;
}
void PDFwin::getRectImage_height(int pageNo, int rectNo, int height, CImage& image)
{
SelectionRectangle& rect=::find(mRects, rectNo);
int totalHeight=int((double)height/(rect.p2.y-rect.p1.y)+0.5);
double DPI=getDPI_height(pageNo, rectNo, height);
PDFDoc* _pdfDoc=mModel->_pdfDoc ;
SplashOutputDev* _outputDev=mModel->_outputDev;
int totalWidth=mModel->calcWidth_DPI(DPI, pageNo);
int left=int(rect.p1.x*(double)totalWidth+0.5);
int top=int(rect.p1.y*(double)totalHeight+0.5);
int bottom=int(rect.p2.y*(double)totalHeight+0.5);
int right=int(rect.p2.x*(double)totalWidth+0.5);
_pdfDoc->displayPageSlice(_outputDev, pageNo+1, DPI, DPI, 0, gFalse, gTrue, gFalse, left,top, right-left,height);
SplashBitmap* bmp=_outputDev->takeBitmap();
image.SetData(bmp->getWidth(), bmp->getHeight(), bmp->getDataPtr(), bmp->getRowSize());
ASSERT(image.GetWidth()==right-left);
ASSERT(image.GetHeight()==height);
delete bmp;
}
void PDFwin::setStatus(const char* o)
{
mLayout->find<Fl_Box>("Status")->copy_label(o);
mLayout->redraw();
Fl::check();
}
void SelectionRectangle::updateScreenCoord(PDFwin const& win)
{
Int2D pos1=win.toWindowCoord(p1.x, p1.y);
Int2D pos2=win.toWindowCoord(p2.x, p2.y);
if(pos1.x > pos2.x) std::swap(pos1.x, pos2.x);
if(pos1.y > pos2.y) std::swap(pos1.y, pos2.y);
left=pos1.x;
top=pos1.y;
right=pos2.x+1;
bottom=pos2.y+1;
}
bool SelectionRectangle ::isValid()
{return (left+1)!=right;}
int SelectionRectangle ::handle(PDFwin const& win, TString const& event){
Double2D docx=win.toDocCoord(Fl::event_x(), Fl::event_y());
//Int2D cursor=win.toWindowCoord(docx.x, docx.y);
//ASSERT(cursor.x==Fl::event_x());
//ASSERT(cursor.y==Fl::event_y());
//Int2D cursor(Fl::event_x(), Fl::event_y());
if(event=="push")
{
p1=docx;
p2=p1;
updateScreenCoord(win);
return 1;
}
else if(event=="drag")
{
p2=docx;
updateScreenCoord(win);
return 1;
}
return 0;
}
PDFwin::PDFwin(int x, int y, int w, int h)
: Fl_Double_Window(x,y,w,h)
{
globalParams = new GlobalParams();
Fl_Box* b=new Fl_Box(0,0, w, h);
b->box(FL_DOWN_FRAME);
resizable(this);
end();
mModel=NULL;
mState="none";
// use zero index.
mCurrPage=0;
mSelectedRect=mRects.end();
_filename=" ";
}
void PDFwin::load(const char* filename)
{
_filename=" ";
delete mModel;
mModel=new PDFmodel();
if(!mModel->load(filename))
{
mState.format("Error! opening %s", filename);
delete mModel;
mModel=NULL;
}
_filename=filename;
mOutDir=TString(filename).left(-4);
mCurrPage=0;
pageChanged();
redraw();
if(mModel)
{
mLayout->findButton("Process current page")->activate();
mLayout->findButton("Process all pages")->activate();
mLayout->redraw();
}
}
PDFwin::~PDFwin(void)
{
delete mModel;
delete globalParams;
globalParams=NULL;
}
std::list<SelectionRectangle>::iterator PDFwin::findRect(int x, int y)
{
std::list<SelectionRectangle>::iterator i;
for(i=mRects.begin(); i!=mRects.end(); ++i)
{
if((*i).contains(Int2D(x, y)))
{
return i;
}
}
return i;
}
int PDFwin::handle(int event)
{
static bool mbMoveRect=false;
static TRect mPushedRect;
static Int2D mPushedCursor;
switch(event)
{
/* Receiving Drag and Drop */
case FL_DND_ENTER:
case FL_DND_RELEASE:
case FL_DND_LEAVE:
case FL_DND_DRAG:
return 1;
case FL_PASTE:
{
TString fn=Fl::event_text();
if(fn.length() && fn.right(4).toUpper()==".PDF")
{
load(fn);
}
else
Msg::msgBox("Error! Unknown file format");
// If there is a callback registered, call it.
// The callback must access Fl::event_text() to
// get the string or file path(s) that was dropped.
// Note that do_callback() is not called directly.
// Instead it will be executed by the FLTK main-loop
// once we have finished handling the DND event.
// This allows caller to popup a window or change widget focus.
//if(callback() && ((when() & FL_WHEN_RELEASE) || (when() & FL_WHEN_CHANGED)))
// Fl::add_timeout(0.0, Fl_DND_Box::callback_deferred, (void*)this);
return 1;
}
case FL_KEYUP:
if(mModel)
{
if(Fl::event_key()==FL_Page_Down)
{
mCurrPage=(mCurrPage+1)%mModel->_pdfDoc->getNumPages();
pageChanged();
redraw();
}
else if(Fl::event_key()==FL_Page_Up)
{
mCurrPage=(mCurrPage+mModel->_pdfDoc->getNumPages()-1)%mModel->_pdfDoc->getNumPages();
pageChanged();
redraw();
}
else if(Fl::event_key()==FL_Delete)
{
if(mSelectedRect!=mRects.end())
{
mRects.erase(mSelectedRect);
mSelectedRect=mRects.end();
redraw();
}
}
}
break;
case FL_ENTER:
return 1;
case FL_LEAVE:
cursor(FL_CURSOR_DEFAULT);
return 1;
case FL_MOVE:
{
if(mSelectedRect!=mRects.end() &&
mSelectedRect->corner(Int2D(Fl::event_x(), Fl::event_y())))
{
cursor(FL_CURSOR_NWSE);
return 1;
}
if(findRect(Fl::event_x(), Fl::event_y())==mRects.end())
cursor(FL_CURSOR_DEFAULT);
else
cursor(FL_CURSOR_MOVE);
}
return 1;
case FL_PUSH:
if(mModel && Fl::event_button() == FL_LEFT_MOUSE)
{
if(mSelectedRect!=mRects.end())
{
int corner=mSelectedRect->corner(Int2D(Fl::event_x(), Fl::event_y()));
if(corner)
{
if(corner==1)
std::swap(mSelectedRect->p1, mSelectedRect->p2);
cursor(FL_CURSOR_NWSE);
return 1;
}
}
std::list<SelectionRectangle>::iterator i
=findRect(Fl::event_x(), Fl::event_y());
if(i!=mRects.end())
{
// move selected rect
mSelectedRect=i;
redraw();
mbMoveRect=true;
mPushedCursor.x=Fl::event_x();
mPushedCursor.y=Fl::event_y();
mPushedRect=*mSelectedRect;
cursor(FL_CURSOR_MOVE);
return 1;
}
mRects.push_back(SelectionRectangle());
mSelectedRect=mRects.end();
mSelectedRect--;
if(selectedRect().handle(*this, "push"))
{
redraw();
cursor(FL_CURSOR_HAND);
return 1;
}
}
return 0;
break;
case FL_DRAG:
{
if(mbMoveRect)
{
cursor(FL_CURSOR_MOVE);
mSelectedRect->p1=
toDocCoord(mPushedRect.left+Fl::event_x()-mPushedCursor.x,
mPushedRect.top+Fl::event_y()-mPushedCursor.y);
mSelectedRect->p2=
toDocCoord(mPushedRect.right+Fl::event_x()-mPushedCursor.x,
mPushedRect.bottom+Fl::event_y()-mPushedCursor.y);
mSelectedRect->updateScreenCoord(*this);
redraw();
return 1;
}
if(selectedRect().handle(*this, "drag"))
redraw();
cursor(FL_CURSOR_HAND);
return 1;
}
break;
case FL_RELEASE:
{
mbMoveRect=false;
if(mRects.size())
{
if(selectedRect().isValid())
{
if(selectedRect().p1.x> selectedRect().p2.x)
std::swap(selectedRect().p1.x, selectedRect().p2.x);
if(selectedRect().p1.y> selectedRect().p2.y)
std::swap(selectedRect().p1.y, selectedRect().p2.y);
}
else
{
mRects.erase(mSelectedRect);
mSelectedRect=mRects.end();
redraw();
}
}
return 1;
}
break;
}
return Fl_Double_Window::handle(event);
}
void PDFwin::onIdle()
{
}
Int2D PDFwin::toWindowCoord(double x, double y) const
{
CImage* bmp=mModel->getPage(w()-2, h()-2, mCurrPage);
int x1=1;
int y1=1;
// draw pdf at center of the panel
if(bmp->GetWidth()<w()-2)
x1+=(w()-2-bmp->GetWidth())/2;
if(bmp->GetHeight()<h()-2)
y1+=(h()-2-bmp->GetHeight())/2;
int x2=x1+bmp->GetWidth();
int y2=y1+bmp->GetHeight();
return Int2D(sop::interpolateInt(x, x1,x2), sop::interpolateInt(y, y1, y2));
}
Double2D PDFwin::toDocCoord(int x, int y) const
{
CImage* bmp=mModel->getPage(w()-2, h()-2, mCurrPage);
int x1=1;
int y1=1;
// draw pdf at center of the panel
if(bmp->GetWidth()<w()-2)
x1+=(w()-2-bmp->GetWidth())/2;
if(bmp->GetHeight()<h()-2)
y1+=(h()-2-bmp->GetHeight())/2;
int x2=x1+bmp->GetWidth();
int y2=y1+bmp->GetHeight();
return Double2D(sop::clampMap(double(x), double(x1), double(x2)),
sop::clampMap(double(y), double(y1), double(y2)));
}
bool DeleteAllFiles(const char* path, const char* mask,bool bConfirm);
void PDFwin::deleteAllFiles()
{
DeleteAllFiles(mOutDir, "*",true);
}
void PDFwin::deleteAllFilesWithoutConfirm()
{
DeleteAllFiles(mOutDir, "*",false);
}
void PDFwin::setCurPage(int pageNo)
{
mCurrPage=pageNo;
pageChanged();
redraw();
}
void PDFwin::pageChanged()
{
int ww=w()-2;
int hh=h()-2;
if(!mModel) return;
if(!mModel->cacheValid(ww, hh, mCurrPage))
{
mState="load";
redraw();
Fl::check();
mState="none";
}
CImage* bmp_orig=mModel->getPage(ww, hh, mCurrPage);
if(mLayout->findCheckButton("Use automatic segmentation")->value())
{
CImage temp;
temp.CopyFrom(*bmp_orig);
#ifdef DEBUG_FONT_DETECTION
CImage* bmp=bmp_orig;
#else
CImage* bmp=&temp;
#endif
{
intmatrixn& textCache=*mModel->_textCache[mCurrPage];
#ifdef USE_FONT_DETECTION
const bool drawLetterBoundingBox=true;
const bool drawDetectedSpace=true;
#else
const bool drawLetterBoundingBox=false;
const bool drawDetectedSpace=false;
#endif
if(drawLetterBoundingBox)
{
CImagePixel ip(bmp);
for(int i=0; i<textCache.rows()-1; i++)
{
int* info=textCache[i];
int c=info[TC_c];
int x=info[TC_x];
int y=info[TC_y];
int w=info[TC_w];
int h=info[TC_h];
int fx=info[TC_fx];
int fy=info[TC_fy];
if (std::abs(y-textCache[i+1][TC_y])<=3) // draw excluding trailing space
{
#ifdef DEBUG_FONT_DETECTION
ip.DrawLineBox(TRect(x-fx,y-fy, x-fx+w, y-fy+h), CPixelRGB8(0,0,0));
#else
ip.DrawBox(TRect(x-fx,y-fy, x-fx+w, y-fy+h), CPixelRGB8(0,0,0));
#endif
ip.DrawHorizLine(x, y, w, CPixelRGB8(255,0,0));
}
// else printf("%d %d %d %d\n", x,y, textCache[i+1][TC_x], textCache[i+1][TC_y]);
}
}
FlLayout* layout=mLayout->findLayout("Automatic segmentation");
double min_text_gap=layout->findSlider("MIN text-gap")->value();
if(drawDetectedSpace)
{
CImagePixel ip(bmp);
for(int i=1; i<textCache.rows(); i++)
{
int* pinfo=textCache[i-1];
int* info=textCache[i];
if(pinfo[TC_y]==info[TC_y])
{
int prevEnd=pinfo[TC_x]-pinfo[TC_fx]+pinfo[TC_w]-1;
int curStart=info[TC_x]-info[TC_fx];
int bottom=MIN(pinfo[TC_y]-pinfo[TC_fy], info[TC_y]-info[TC_fy]);
int top=MAX(pinfo[TC_y]-pinfo[TC_fy]+pinfo[TC_h], info[TC_y]-info[TC_fy]+info[TC_h]);
int space_thr=MAX(pinfo[TC_h], pinfo[TC_w]);
space_thr=MAX(space_thr, info[TC_h]);
space_thr=MAX(space_thr, info[TC_w]);
space_thr*=min_text_gap;
if(curStart-prevEnd<=space_thr && curStart>prevEnd)
{
// mark as space.
ip.DrawBox(TRect(prevEnd, bottom, curStart, top), CPixelRGB8(0,0,0));
}
}
}
}
}
SummedAreaTable t(*bmp);//bmp->getWidth(), bmp->getHeight(), bmp->getDataPtr(), bmp->getRowSize());
FlLayout* layout=mLayout->findLayout("Automatic segmentation");
double min_gap_percentage=layout->findSlider("MIN gap")->value();
double margin_percentage=layout->findSlider("Margin")->value();
int thr_white=layout->findSlider("white point")->value();
double max_width=1.0/layout->findSlider("N columns")->value();
double cropT=layout->findSlider("Crop T")->value()/100.0;
double cropB=layout->findSlider("Crop B")->value()/100.0;
double cropL=layout->findSlider("Crop L")->value()/100.0;
double cropR=layout->findSlider("Crop R")->value()/100.0;
// TRect domain(0,0, bmp->GetWidth(), bmp->GetHeight());
TRect domain(cropL*bmp->GetWidth(),cropT*bmp->GetHeight(), (1-cropR)*bmp->GetWidth()
, (1-cropB)*bmp->GetHeight());
ImageSegmentation s(t, true, domain, 0, min_gap_percentage, thr_white);
s.segment();
std::list<TRect> results;
s.getResult(results, max_width, margin_percentage);
/*
std::list<TRect> results;
int min_gap=int((double)bmp->GetWidth()*min_gap_percentage*0.01 +0.5);
int min_box_size=100; // 10�ȼ������� �ڽ��� ������.
CImagePixel orig(bmp_orig);
std::list<index2> LRcorners;
std::list<index2> ULcorners;
for(int i=0, ni=bmp->GetWidth()-min_box_size-min_gap; i<ni; i++)
{
for(int j=0, nj=bmp->GetHeight()-min_box_size-min_gap; j<nj; j++)
{
// search for LR corner
TRect outerBox(i, j, i+min_box_size+min_gap, j+min_box_size+min_gap);
TRect innerBox(i, j, i+min_box_size, j+min_box_size);
int sum1=t.sum(outerBox);
int sum2=t.sum(innerBox);
int area=outerBox.Width()*outerBox.Height()-
innerBox.Width()*innerBox.Height();
if(sum1-sum2 >= thr_white*area)
{
//orig.SetPixel(i+min_box_size+min_gap/2,j+min_box_size+min_gap/2,CPixelRGB8(255,0,0));
LRcorners.push_back(index2(i+min_box_size+min_gap/2,j+min_box_size+min_gap/2));
}
// search for UL corner
{
TRect outerBox(i, j, i+min_box_size+min_gap, j+min_box_size+min_gap);
TRect innerBox(i+min_gap, j+min_gap, i+min_box_size+min_gap, j+min_box_size+min_gap);
int sum1=t.sum(outerBox);
int sum2=t.sum(innerBox);
int area=outerBox.Width()*outerBox.Height()-
innerBox.Width()*innerBox.Height();
if(sum1-sum2 >= thr_white*area)
{
// orig.SetPixel(i+min_gap/2,j+min_gap/2,CPixelRGB8(0,0,255));
ULcorners.push_back(index2(i+min_gap/2,j+min_gap/2));
}
}
}
}
{
std::list<index2>::iterator i;
for(i=ULcorners.begin(); i!=ULcorners.end(); ++i)
{
orig.SetPixel((*i).x(), (*i).y(), CPixelRGB8(0,0,255));
}
}
*/
mRects.clear();
int x=toWindowCoord(0,0).x;
int y=toWindowCoord(0,0).y;
std::list<TRect>::iterator i;
for(i=results.begin(); i!=results.end(); i++)
{
mRects.push_back(SelectionRectangle());
mSelectedRect=mRects.end();
mSelectedRect--;
SelectionRectangle& mRect=selectedRect();
mRect.p1=toDocCoord((*i).left+x, (*i).top+y);
mRect.p2=toDocCoord((*i).right+x, (*i).bottom+y);
mRect.updateScreenCoord(*this);
}
}
}
void PDFwin::draw()
{
Fl_Double_Window::draw();
int ww=w()-2;
int hh=h()-2;
if(!mModel) return;
if(mState=="load")
{
fl_draw("loading page (please wait)", 0,0,w(), h(), FL_ALIGN_CENTER);