gwcalc.cpp

嵌入式linux下的一个高级计算器程序的源码

{
  switch (ifkt) {
  case 1:
    inpfeld->insert("EXP("); 
    break;
  case 2: 
    if (ihyp) {
      ihyp = 0;
      ql02->setText("");
    }
    else {
      ihyp = 1;
      ql02->setText("HYP");
    }
    break;
  case 3:
    inpfeld->insert("SIGN(");
    break;
  }
}

void
gwCalcMain::InsertButtonF03()
{
  if (ifkt == 1)
    inpfeld->insert("^"); 
}

void
gwCalcMain::InsertButtonF04()
{
  switch (ifkt) {
  case 1:
    inpfeld->insert("LOG10(");
    break;
  case 2: 
    if (iinv) inpfeld->insert("A");
    if (ihyp) inpfeld->insert("H");
    inpfeld->insert("SIN(");
    iinv = 0;
    ihyp = 0;
    ql01->setText("");
    ql02->setText("");
    break;
  case 3:
    inpfeld->insert("ATAN2(");
    break;
  }
}

void
gwCalcMain::InsertButtonF05()
{
  if (ifkt == 1)
    inpfeld->insert("10^"); 
  if (ifkt == 2) {
    if (iinv) inpfeld->insert("A");
    if (ihyp) inpfeld->insert("H");
    inpfeld->insert("COS(");
    iinv = 0;
    ihyp = 0;
    ql01->setText("");
    ql02->setText("");
  }
}

void
gwCalcMain::InsertButtonF06()
{
  if (ifkt == 1)
    inpfeld->insert("^(1/)"); 
  if (ifkt == 2) {
    if (iinv) inpfeld->insert("A");
    if (ihyp) inpfeld->insert("H");
    inpfeld->insert("TAN(");
    iinv = 0;
    ihyp = 0;
    ql01->setText("");
    ql02->setText("");
  }
}

void
gwCalcMain::InsertButtonF07()
 {
  if (ifkt == 1)
    inpfeld->insert("LOG2(");
  if (ifkt == 2) {
    if (iinv) inpfeld->insert("A");
    if (ihyp) inpfeld->insert("H");
    inpfeld->insert("CSC(");
    iinv = 0;
    ihyp = 0;
    ql01->setText("");
    ql02->setText("");
  }
 }

void
gwCalcMain::InsertButtonF08()
 {
  if (ifkt == 1)
    inpfeld->insert("2^");
  if (ifkt == 2) {
    if (iinv) inpfeld->insert("A");
    if (ihyp) inpfeld->insert("H");
    inpfeld->insert("SEC(");
    iinv = 0;
    ihyp = 0;
    ql01->setText("");
    ql02->setText("");
  }
 }

void
gwCalcMain::InsertButtonF09()
 {
  if (ifkt == 1)
    inpfeld->insert("^2");
  if (ifkt == 2) {
    if (iinv) inpfeld->insert("A");
    if (ihyp) inpfeld->insert("H");
    inpfeld->insert("COT(");
    iinv = 0;
    ihyp = 0;
    ql01->setText("");
    ql02->setText("");
  }
 }

void
gwCalcMain::InsertButtonF10()
 {
  if (ifkt == 1)
    inpfeld->insert("LOG(");
 }

void
gwCalcMain::InsertButtonF11()
 {
  if (ifkt == 1)
    inpfeld->insert("^-1");
 }

void
gwCalcMain::InsertButtonF12()
 {
  if (ifkt == 1)
    inpfeld->insert("sqrt(");
}

// ------------------ special character keys ---------------
void
gwCalcMain::InsertButtonP01()
 {
  inpfeld->insert(":"); 
 }

void
gwCalcMain::InsertButtonP02()
 {
  inpfeld->insert(";"); 
 }

void
gwCalcMain::InsertButtonP03()
 {
  inpfeld->insert("="); 
 }

void
gwCalcMain::InsertButtonP04()
{
  inpfeld->insert(" "); 
}

// ------------ switches and popup keys ---------------
void
gwCalcMain::InsertButtonS01()
  //  Funktion Key Table switch
  //
  // there are two layers for the function keys
  // Layer 1: power functions
  // Layer 2: trigonometric functions
  // pressing this key switches between these two
  // layers by exchanging the labels of the buttons
  // and if necessary the color of the buttons
{

  if (ifkt == 3)
    ifkt = 1;
  else
    ifkt++;

  if (ifkt == 1) {
    f01->setPixmap(*qp01a);
    f01->setPalette(*cfkt);
    f02->setPixmap(*qp02a);
    f02->setPalette(*cfkt);
    f03->setPixmap(*qp03a);
    f04->setPixmap(*qp04a);
    f05->setPixmap(*qp05a);
    f06->setPixmap(*qp06a);
    f07->setPixmap(*qp07a);
    f08->setPixmap(*qp08a);
    f09->setPixmap(*qp09a);
    f10->setPixmap(*qp10a);
    f11->setPixmap(*qp11a);
    f12->setPixmap(*qp12a);
  }
  if (ifkt == 2) {
    f01->setPixmap(*qp01b);
    f01->setPalette(*cclr);
    f02->setPixmap(*qp02b);
    f02->setPalette(*cclr);
    f03->setPixmap(*qleer);
    f04->setPixmap(*qp04b);
    f05->setPixmap(*qp05b);
    f06->setPixmap(*qp06b);
    f07->setPixmap(*qp07b);
    f08->setPixmap(*qp08b);
    f09->setPixmap(*qp09b);
    f10->setPixmap(*qleer);
    f11->setPixmap(*qleer);
    f12->setPixmap(*qleer);
  }
  if (ifkt == 3) {
    f01->setPixmap(*qp01c);
    f01->setPalette(*cfkt);
    f02->setPixmap(*qp02c);
    f02->setPalette(*cfkt);
    f03->setPixmap(*qleer);
    f04->setPixmap(*qp04c);
    f05->setPixmap(*qleer);
    f06->setPixmap(*qleer);
    f07->setPixmap(*qleer);
    f08->setPixmap(*qleer);
    f09->setPixmap(*qleer);
    f10->setPixmap(*qleer);
    f11->setPixmap(*qleer);
    f12->setPixmap(*qleer);
  }
}

void
gwCalcMain::InsertButtonS02()
  // Function List Editor
  //
  // Popup the Function List Editor
  //
  // with the help of the function list editor the user can
  // add, modify or remove user-defined functions
{
  int  k, x, y;

  // on Linux Desktop the Dialog is placed directly
  // on the right side of the main widget
  x = this->x();
  y = this->y();

  fkts = new FuncList(x+MAINWIDTH+8, y);
  // tell the dialog the adress of the functionlist
  fkts->setList(&CalculatorFkt[0], CalculatorFktAnz);

  // display the dialog
  k = fkts->exec();
  CalculatorFktAnz = fkts->getNumber();

  // the dialog notifies the selection of a function by
  // adding 10 to the index of the selected function
  // the name of the function is copied to the inputfield
  if (k >= 10) {
    inpfeld->insert(CalculatorFkt[k-9].Name);
    inpfeld->insert("(");
  }
}

void
gwCalcMain::InsertButtonS03()
  //  List History;
  //
  // Popup a Dialog with the display of the 
  // Value History; if the user presses OK after
  // selecting an entry in the history list, the
  // value is copied into the formula entry field
  //
{
  int   i, k, x, y;
  char  value[40];

  // on Linux Desktop the Dialog is placed directly
  // on the right side of the main widget
  x = this->x();
  y = this->y();

  hvars = new HistList(x+MAINWIDTH+8, y);

  if (CalculatorHistCnt) {
    // transfer the history list into the history window
    for (i = 0; i < CalculatorHistCnt; i++) {
      sprintf(value, "%-14.12g", CalculatorHistory[i]);
      hvars->lb->insertItem(value);
    }
    // place the cursor on the last entry
    hvars->lb->setBottomItem(CalculatorHistCnt-1);
    hvars->lb->setSelected(CalculatorHistCnt-1, TRUE);
    hvars->lb->setSelected(CalculatorHistCnt-1, FALSE);
  }

  // Popup the Dialog
  k = hvars->exec();

  if (k == QDialog::Accepted) {
    // copy the selected history entry to the input-field
    i = hvars->lb->currentItem();
    sprintf(value, "%-14.12g", CalculatorHistory[i]);
    i = strlen(value);

    while ((i > 0) && (value[i] <= ' ')) value[i--] = 0;
    inpfeld->insert(value);
  }

}

void
gwCalcMain::InsertButtonS04()
  //  List Variables Tables
  //
  // Popup a dialog for editing the variable list
  // in the variable list it is possible to change
  // the names of user-defined variables and change
  // the value of variables
{
  int   i, j, k, x, y;
  char *name;

  // on Linux Desktop the Dialog is placed directly
  // on the right side of the main widget
  x = this->x();
  y = this->y();

  vars = new VarList(x+MAINWIDTH+8, y);

  // ANS is a special variable and is displayed as the first
  // entry
  vars->AddVar("ANS", CalculatorRes, 1);
  // insert the user-defined variables into the dialog
  for ( i = 0; i < CalculatorFkt[0].Vars; i++)
    vars->AddVar(CalculatorFkt[0].Var[i].Name, 
		 CalculatorFkt[0].Var[i].Valu, 
		 CalculatorFkt[0].Var[i].Ref);

  // tell the dialog the variables count
  vars->AddVarFinish(CalculatorFkt[0].RefCnt);
  // display the dialog
  k = vars->exec();

  j = 0;
  if (k == QDialog::Accepted) {
    // transfer the user-made changes back to the variables list
    // release the memory of the old variables list
    for (i = 0; i < CalculatorFkt[0].Vars; i++)  // begin at 1, 
      free (CalculatorFkt[0].Var[i].Name);       // because 0 == ANS

    for (i = 1; i < 100; i++) {
      // create the new variables list with the entrys in the dialog
      name = vars->GetVar(i, &CalculatorFkt[0].Var[j].Valu, &CalculatorFkt[0].Var[j].Ref); 
      if (name) {
	CalculatorFkt[0].Var[j].Name = (char*) malloc(strlen(name)+1);
	strcpy(CalculatorFkt[0].Var[j].Name, name);
	j++;
      }
      CalculatorFkt[0].RefCnt = vars->GetRefCnt();
    }
    CalculatorFkt[0].Vars = j;
  }
}

void
gwCalcMain::InsertButtonS05()
  // DEG/RAD switch
  //
  // toggles the behavoiur of the trigonometric functions
  // between Radian and Degree for input and result
{
  if (CalculatorRad == 1) {
    CalculatorRad = 2;
    s05->setText("DEG");
  } else if (CalculatorRad == 2) {
    CalculatorRad = 1;
    s05->setText("RAD");
  }
}

void
gwCalcMain::InsertButtonS06()
  // scroll thru the formula history list
 {
  if (CalculatorCmdCurhist >= 0) CalculatorCmdCurhist--;

  inpfeld->clear();
  inpfeld->insert(CalculatorCmdHistory[CalculatorCmdCurhist]);
 }

void
gwCalcMain::InsertButtonS07()
  // scroll thru the formula history list
{

  if (CalculatorCmdCurhist < CalculatorCmdHistoryAnz)  CalculatorCmdCurhist++;
  inpfeld->clear();
 
  if (CalculatorCmdCurhist < CalculatorCmdHistoryAnz)
    inpfeld->insert(CalculatorCmdHistory[CalculatorCmdCurhist]);
}