FXLCDLabel.cpp

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/********************************************************************************
*                                                                               *
*                  LCD text label widget                                        *
*                                                                               *
*********************************************************************************
* Copyright (C) 2003 by Mathew Robertson.   All Rights Reserved.                *
*********************************************************************************
* This library is free software; you can redistribute it and/or                 *
* modify it under the terms of the GNU Lesser General Public                    *
* License as published by the Free Software Foundation; either                  *
* version 2.1 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             *
* Lesser General Public License for more details.                               *
*                                                                               *
* You should have received a copy of the GNU Lesser 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.    *
*********************************************************************************/
/* =========================================================================
 * included modules
 * ======================================================================= */
#ifdef _MSC_VER
#include <windows_config.h>
#else
#include <config.h>
#endif

#include <fxver.h>
#include <xincs.h>
#include <fxdefs.h>
#include <fx.h>
/*
#include <FXStream.h>
#include <FXString.h>
#include <FXSize.h>
#include <FXPoint.h>
#include <FXRectangle.h>
#include <FXRegistry.h>
#include <FXHash.h>
#include <FXApp.h>
#include <FXDCWindow.h>
#include <FXLabel.h>
#include <FXFrame.h>
*/
using namespace FX;
#include "FXSevenSegment.h"
#include "FXLCDLabel.h"
#include "FXBaseObject.h"

#ifdef CHECK_MEMORY_LEAKS
#include <foreign/nvwa/debug_new.h>
#endif // CHECK_MEMORY_LEAKS
using namespace FXEX;
namespace FXEX {

FXDEFMAP(FXLCDLabel) FXLCDLabelMap[]={
    FXMAPFUNC(SEL_PAINT,0,FXLCDLabel::onPaint),
    FXMAPFUNC(SEL_COMMAND,FXWindow::ID_SETVALUE,FXLCDLabel::onCmdSetValue),
    FXMAPFUNC(SEL_COMMAND,FXWindow::ID_SETINTVALUE,FXLCDLabel::onCmdSetIntValue),
    FXMAPFUNC(SEL_COMMAND,FXWindow::ID_SETREALVALUE,FXLCDLabel::onCmdSetRealValue),
    FXMAPFUNC(SEL_COMMAND,FXWindow::ID_SETSTRINGVALUE,FXLCDLabel::onCmdSetStringValue),
    FXMAPFUNC(SEL_COMMAND,FXWindow::ID_GETINTVALUE,FXLCDLabel::onCmdGetIntValue),
    FXMAPFUNC(SEL_COMMAND,FXWindow::ID_GETREALVALUE,FXLCDLabel::onCmdGetRealValue),
    FXMAPFUNC(SEL_COMMAND,FXWindow::ID_GETSTRINGVALUE,FXLCDLabel::onCmdGetStringValue),
    //  FXMAPFUNC(SEL_UPDATE,FXWindow::ID_QUERY_TIP,FXLCDLabel::onQueryTip),
    //  FXMAPFUNC(SEL_UPDATE,FXWindow::ID_QUERY_HELP,FXLCDLabel::onQueryHelp),
    FXMAPKEY(FXLCDLabel::ID_SEVENSEGMENT,FXLCDLabel::onRedirectEvent),
};
FXIMPLEMENT(FXLCDLabel,FXHorizontalFrame,FXLCDLabelMap,ARRAYNUMBER(FXLCDLabelMap))

FXLCDLabel::FXLCDLabel(FXComposite* p,FXuint nfig,FXObject* tgt,FXSelector sel,FXuint opts,FXint pl,FXint pr,FXint pt,FXint pb,FXint hs) : FXHorizontalFrame(p,opts,0,0,0,0,pl,pr,pt,pb,hs,0) {
    if (nfig==0) fxerror("%s: must have at least one figure.\n",getClassName());
    nfigures=nfig;
    setTarget(tgt);
    setSelector(sel);
    enable();
    for (FXint i=0; i<nfigures; i++) {
        new FXSevenSegment(this,this,ID_SEVENSEGMENT,0,0,0,0);
    }
}

FXLCDLabel::~FXLCDLabel() {
    /*
      for (FXSevenSegment *child=(FXSevenSegment*)getFirst(); child; child=(FXSevenSegment*)child->getNext()){
        delete child;
        }
    */
}

// create resources
void FXLCDLabel::create() {
    FXHorizontalFrame::create();
    for (FXWindow *child=getFirst(); child; child=child->getNext()) {
        child->create();
    }
}

// detach resources
void FXLCDLabel::detach() {
    for (FXWindow *child=getFirst(); child; child=child->getNext()) {
        child->detach();
    }
    FXHorizontalFrame::detach();
}

// destroy resources
void FXLCDLabel::destroy() {
    for (FXWindow *child=getFirst(); child; child=child->getNext()) {
        child->destroy();
    }
    FXHorizontalFrame::destroy();
}

// get the foreground color
FXColor FXLCDLabel::getFgColor() const {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    return child->getFgColor();
}

// set the foreground color
void FXLCDLabel::setFgColor(FXColor clr) {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    if (clr!=child->getFgColor()) {
        for (child=(FXSevenSegment*)getFirst(); child; child=(FXSevenSegment*)child->getNext()) {
            child->setFgColor(clr);
        }
    }
}

// get the background color
FXColor FXLCDLabel::getBgColor() const {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    return child->getBgColor();
}

// set the background color
void FXLCDLabel::setBgColor(FXColor clr) {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    if (clr!=child->getBgColor()) {
        for (child=(FXSevenSegment*)getFirst(); child; child=(FXSevenSegment*)child->getNext()) {
            child->setBgColor(clr);
        }
    }
}

// set the text
void FXLCDLabel::setText(FXString lbl) {
    if (lbl!=label) {
        label=lbl;
        recalc();
        update();
    }
}

// get the length of the horizontal segments
FXint FXLCDLabel::getHorizontal() const {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    return child->getHorizontal();
}

// set the length of the horizontal segments
void FXLCDLabel::setHorizontal(const FXint len) {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    if (len!=child->getHorizontal()) {
        for (child=(FXSevenSegment*)getFirst(); child; child=(FXSevenSegment*)child->getNext()) {
            child->setHorizontal(len);
        }
        recalc();
        update();
    }
}

// get the length of the vertical segments
FXint FXLCDLabel::getVertical() const {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    return child->getVertical();
}

// set the length of the vertical segments
void FXLCDLabel::setVertical(const FXint len) {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    if (len!=child->getVertical()) {
        for (child=(FXSevenSegment*)getFirst(); child; child=(FXSevenSegment*)child->getNext()) {
            child->setVertical(len);
        }
        recalc();
        update();
    }
}

// get the width of the segments
FXint FXLCDLabel::getThickness() const {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    return child->getThickness();
}

// set the width of the segments
void FXLCDLabel::setThickness(const FXint width) {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    if (width!=child->getThickness()) {
        for (child=(FXSevenSegment*)getFirst(); child; child=(FXSevenSegment*)child->getNext()) {
            child->setThickness(width);
        }
        recalc();
        update();
    }
}

// get the width of the segments
FXint FXLCDLabel::getGroove() const {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    return child->getGroove();
}

// set the groove width
void FXLCDLabel::setGroove(const FXint width) {
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    if (width!=child->getGroove()) {
        for (child=(FXSevenSegment*)getFirst(); child; child=(FXSevenSegment*)child->getNext()) {
            child->setGroove(width);
        }
        recalc();
        update();
    }
}

// Update value from a message
long FXLCDLabel::onCmdSetValue(FXObject*,FXSelector,void* ptr) {
    setText((const FXchar*)ptr);
    return 1;
}

// Update value from a message
long FXLCDLabel::onCmdSetIntValue(FXObject*,FXSelector,void* ptr) {
    setText(FXStringVal(*((FXint*)ptr)));
    return 1;
}

// Update value from a message
long FXLCDLabel::onCmdSetRealValue(FXObject*,FXSelector,void* ptr) {
    setText(FXStringVal(*((FXdouble*)ptr)));
    return 1;
}

// Update value from a message
long FXLCDLabel::onCmdSetStringValue(FXObject*,FXSelector,void* ptr) {
    setText(*((FXString*)ptr));
    return 1;
}

// Obtain value from text field
long FXLCDLabel::onCmdGetIntValue(FXObject*,FXSelector,void* ptr) {
    *((FXint*)ptr)=FXIntVal(getText());
    return 1;
}

// Obtain value from text field
long FXLCDLabel::onCmdGetRealValue(FXObject*,FXSelector,void* ptr) {
    *((FXdouble*)ptr)=FXDoubleVal(getText());
    return 1;
}

// Obtain value from text field
long FXLCDLabel::onCmdGetStringValue(FXObject*,FXSelector,void* ptr) {
    *((FXString*)ptr)=getText();
    return 1;
}

// handle paint event
long FXLCDLabel::onPaint(FXObject*,FXSelector,void *ptr) {
    FXEvent *event= (FXEvent*) ptr;
    FXDCWindow dc(this, event);
    drawFrame(dc,0,0,width,height);
    FXSevenSegment *child = (FXSevenSegment*)getFirst();
    // Fill the background
    dc.setForeground(child->getBgColor());
    dc.fillRectangle(border, border, width-(border<<1), height-(border<<1));
    // Draw the current string
    dc.setForeground(child->getFgColor());
    drawString(label);
    return 1;
}

// draw a specified string/label
void FXLCDLabel::drawString(const FXString& lbl) {
    FXint i=0;
    FXString displayString(' ',nfigures);
    if (options&LCDLABEL_LEADING_ZEROS && (FXIntVal(lbl) || lbl=="0")) {
        FXString txt = lbl;
        if (txt[0]=='-') {
            displayString.replace(0,'-');
            txt.erase(0);
            i=1;
        }
        for (; (i+txt.length())<nfigures; i++) {
            displayString.replace(i,'0');
        }
        displayString.insert(i,txt);
    } else if (options&JUSTIFY_RIGHT) {
        for (; (i+lbl.length())<nfigures; i++) {}
        displayString.insert(i,lbl);
    } else {
        displayString.insert(0,lbl);
    }
    displayString.trunc(nfigures);
    i=0;

    // FIXME: at the moment, if we resize the parent widget, we must use integer multiples
    //        of the SevenSegment width.  The problem is that it makes the padding on the
    //        RHS look wrong.  What we need to do is to extend the horizontal segment width
    //        for the last sevensegment, so as to fill the remaining space.
    FXSevenSegment *child=(FXSevenSegment*)getFirst();
    if (options&LAYOUT_FILL) {
        FXint width=this->width-padleft-padright-(border<<1);
        FXint height=this->height-padtop-padbottom-(border<<1);
        hspacing=FXMAX(width,height)/50;
        if (hspacing<1) hspacing=1;
        FXint hsl=(width-(nfigures-1)*hspacing)/nfigures;
        if (hsl<5) hsl=5;
        FXint vsl=height>>1;
        if (vsl<5) vsl=5;
        FXint st=FXMIN(hsl,vsl)/4;
        if (st<1) st=1;
        FXint groove=st/4;
        if (groove<1) groove=1;
        if (options&LAYOUT_FILL_X) {
            hsl-=groove<<1;
            for (; child; child=(FXSevenSegment*)child->getNext()) {
                child->setHorizontal(hsl);
            }
            child=(FXSevenSegment*)getFirst();
        }
        if (options&LAYOUT_FILL_Y) {
            vsl-=groove<<1;
            for (; child; child=(FXSevenSegment*)child->getNext()) {
                child->setVertical(vsl);
            }
            child=(FXSevenSegment*)getFirst();
        }
        for (; child; child=(FXSevenSegment*)child->getNext()) {
            child->setText(displayString[i++]);
            child->setGroove(groove);
            child->setThickness(st);
        }
    } else {
        for (; child; child=(FXSevenSegment*)child->getNext()) {
            child->setText(displayString[i++]);
        }
    }
}

// redirect events to main window
long FXLCDLabel::onRedirectEvent(FXObject*,FXSelector sel,void *ptr) {
    FXuint seltype = FXSELTYPE(sel);
    if (isEnabled()) {
        if (target) target->handle(this,FXSEL(seltype,message),ptr);
    }
    return 1;
}

// return minimum width
FXint FXLCDLabel::getDefaultWidth() {
    return padleft + getFirst()->getDefaultWidth()*nfigures + hspacing*(nfigures-1) + padright + (border<<1);
}

// return minimum height
FXint FXLCDLabel::getDefaultHeight() {
    return padtop + getFirst()->getDefaultHeight() + padbottom + (border<<1);
}

// save resources
void FXLCDLabel::save(FXStream &store) const {
    FXHorizontalFrame::save(store);
    store << label;
    store << nfigures;
}

// load resources
void FXLCDLabel::load(FXStream &store) {
    FXHorizontalFrame::load(store);
    store >> label;
    store >> nfigures;
}

// let parent show tip if appropriate
long FXLCDLabel::onQueryTip(FXObject *sender,FXSelector sel,void *ptr) {
    if (getParent()) return getParent()->handle(sender,sel,ptr);
    return 0;
}

// let parent show help if appropriate
long FXLCDLabel::onQueryHelp(FXObject *sender,FXSelector sel,void *ptr) {
    if (getParent()) return getParent()->handle(sender,sel,ptr);
    return 0;
}

}