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calc.c
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calc.c
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/*
* calc.c: A plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#include <vdr/plugin.h>
#include <stdlib.h> // for system
static const char *VERSION = "0.1.0";
static const char *DESCRIPTION = "VDR mini calculator";
static const char *MAINMENUENTRY = "Calc";
// --- cCalcMain -------------------------------------------------------------
enum operType {
none,
plus,
minus,
multiply,
divide
};
enum gradType {
deg,
rad,
grad
};
class cCalcMain : public cOsdObject {
private:
cOsd *osd;
int x;
int y;
int operatorSet; // 0 : plus, minus, multiply, divide
// 1: +/-, comma, C, AC
// 2: M+, MC,
bool operatorEntered; // TRUE wenn ein Operator schon eingegeben ist
// z.b. 2 + 3
// die n�chste Operation w�re z.B. +5, daher muss 2+3 schon mal ausgerechnet
// und ausgegeben werden
bool clearOutputForNextDigit;
#define MAX_DIGITS 100 // don?t reduce this...its safer!!!!!!
tColor color;
char outputLine[MAX_DIGITS]; // line of the digits
char operandLine1[MAX_DIGITS];
char operandLine2[MAX_DIGITS];
char cResult[MAX_DIGITS];
char memoryLine[MAX_DIGITS];
gradType eGradType;
bool memorySet;
void AddDigit(eKeys key);
void CalculateResult(char* inOperand1, char* inOperand2, char *outOperand, char cOperator);
operType operatorSymbol;
void CalculateResultTrig(char* inOperand1, char *outOperand, char cOperator, gradType calculateGradType);
public:
cCalcMain(void);
virtual ~cCalcMain();
virtual void Show(void);
virtual eOSState ProcessKey(eKeys Key);
void UpdateDisplay(void);
};
cCalcMain::cCalcMain(void)
{
osd = NULL;
x = y = 50;
color = clrRed;
clearOutputForNextDigit = false;
operatorSet = 0;
operatorEntered = false;
memorySet = false;
sprintf(outputLine,"");
sprintf(operandLine1,"");
sprintf(operandLine2,"");
sprintf(cResult,"");
sprintf(memoryLine,"");
eGradType = deg;
}
cCalcMain::~cCalcMain()
{
delete osd;
}
void cCalcMain::Show(void)
{
osd = cOsdProvider::NewOsd(50, 50, 50);
if (osd) {
tArea Area = { 0, 0, 399, 299, 4 };
osd->SetAreas(&Area, 1);
osd->DrawRectangle(0, 0, 399, 299, clrGray50);
osd->Flush();
UpdateDisplay();
}
}
eOSState cCalcMain::ProcessKey(eKeys Key)
{
eOSState state = cOsdObject::ProcessKey(Key);
if (state == osUnknown) {
switch (Key & ~k_Repeat) {
case k0 ... k9:
AddDigit(Key);
break;
// case kUp: if (y > 0) y--; break;
// case kDown: if (y < 196) y++; break;
case kUp: if (operatorSet == 1)
{
operatorSet = 0;
}
if (operatorSet == 2)
{
operatorSet = 1;
}
if (operatorSet == 3)
{
operatorSet = 2;
}
if (operatorSet == 4)
{
operatorSet = 3;
}
UpdateDisplay();
break;
case kDown:
if (operatorSet == 3)
{
operatorSet = 4;
}
if (operatorSet == 2)
{
operatorSet = 3;
}
if (operatorSet == 1)
{
operatorSet = 2;
}
if (operatorSet == 0)
{
operatorSet = 1;
}
UpdateDisplay();
break;
case kRed:
if (operatorSet == 0)
{
if (operatorEntered == true)
{
switch(operatorSymbol)
{
case(plus):
CalculateResult(operandLine1,outputLine,cResult,'+');
strcpy(operandLine1,cResult);
break;
case(minus):
CalculateResult(operandLine1,outputLine,cResult,'-');
strcpy(operandLine1,cResult);
break;
case(multiply):
CalculateResult(operandLine1,outputLine,cResult,'*');
strcpy(operandLine1,cResult);
break;
case(divide):
CalculateResult(operandLine1,outputLine,cResult,'/');
strcpy(operandLine1,cResult);
break;
case(none):
break;
}
strcpy(outputLine,cResult);
UpdateDisplay();
}
else
{
strcpy(operandLine1, outputLine);
}
operatorSymbol = plus;
clearOutputForNextDigit = true;
UpdateDisplay();
operatorEntered = true;
break;
}
if (operatorSet == 1)
{
CalculateResult(outputLine,"-1",cResult,'*');
strcpy(outputLine, cResult);
UpdateDisplay();
break;
}
if (operatorSet == 2)
{
strcpy(memoryLine,outputLine );
UpdateDisplay();
break;
}
if (operatorSet == 3)
{
eGradType = deg;
UpdateDisplay();
break;
}
if (operatorSet == 4)
{
CalculateResultTrig(outputLine,cResult,'s',eGradType);
strcpy(outputLine, cResult);
UpdateDisplay();
break;
}
break;
case kGreen:
if (operatorSet == 0)
{
if (operatorEntered == true)
{
switch(operatorSymbol)
{
case(plus):
CalculateResult(operandLine1,outputLine,cResult,'+');
strcpy(operandLine1,cResult);
break;
case(minus):
CalculateResult(operandLine1,outputLine,cResult,'-');
strcpy(operandLine1,cResult);
break;
case(multiply):
CalculateResult(operandLine1,outputLine,cResult,'*');
strcpy(operandLine1,cResult);
break;
case(divide):
CalculateResult(operandLine1,outputLine,cResult,'/');
strcpy(operandLine1,cResult);
break;
case(none):
break;
}
strcpy(outputLine,cResult);
UpdateDisplay();
break;
}
else
{
strcpy(operandLine1, outputLine);
}
operatorSymbol = minus;
clearOutputForNextDigit = true;
UpdateDisplay();
operatorEntered = true;
break;
}
if (operatorSet == 1)
{
if (strchr(outputLine,'.') == NULL)
sprintf(outputLine,"%s.",outputLine);
UpdateDisplay();
break;
}
if (operatorSet == 2)
{
sprintf(memoryLine,"");
memorySet = false;
UpdateDisplay();
break;
}
if (operatorSet == 3)
{
eGradType = rad;
UpdateDisplay();
break;
}
if (operatorSet == 4)
{
CalculateResultTrig(outputLine,cResult,'c',eGradType);
strcpy(outputLine, cResult);
UpdateDisplay();
break;
}
case kYellow:
if (operatorSet == 0)
{
if (operatorEntered == true)
{
switch(operatorSymbol)
{
case(plus):
CalculateResult(operandLine1,outputLine,cResult,'+');
strcpy(operandLine1,cResult);
break;
case(minus):
CalculateResult(operandLine1,outputLine,cResult,'-');
strcpy(operandLine1,cResult);
break;
case(multiply):
CalculateResult(operandLine1,outputLine,cResult,'*');
strcpy(operandLine1,cResult);
break;
case(divide):
CalculateResult(operandLine1,outputLine,cResult,'/');
strcpy(operandLine1,cResult);
break;
case(none):
break;
}
strcpy(outputLine,cResult);
UpdateDisplay();
break;
}
else
{
strcpy(operandLine1, outputLine);
}
operatorSymbol = multiply;
clearOutputForNextDigit = true;
UpdateDisplay();
operatorEntered = true;
break;
}
if (operatorSet == 1) // Clear
{
sprintf(outputLine,"");
clearOutputForNextDigit = false;
UpdateDisplay();
break;
}
if (operatorSet == 2)
{
strcpy(outputLine,memoryLine);
UpdateDisplay();
break;
}
if (operatorSet == 3)
{
eGradType = grad;
UpdateDisplay();
break;
}
if (operatorSet == 4)
{
CalculateResultTrig(outputLine,cResult,'t',eGradType);
strcpy(outputLine, cResult);
UpdateDisplay();
break;
}
case kBlue:
if (operatorSet == 0)
{
if (operatorEntered == true)
{
switch(operatorSymbol)
{
case(plus):
CalculateResult(operandLine1,outputLine,cResult,'+');
strcpy(operandLine1,cResult);
break;
case(minus):
CalculateResult(operandLine1,outputLine,cResult,'-');
strcpy(operandLine1,cResult);
break;
case(multiply):
CalculateResult(operandLine1,outputLine,cResult,'*');
strcpy(operandLine1,cResult);
break;
case(divide):
CalculateResult(operandLine1,outputLine,cResult,'/');
strcpy(operandLine1,cResult);
break;
case(none):
break;
}
strcpy(outputLine,cResult);
UpdateDisplay();
break;
}
else
{
strcpy(operandLine1, outputLine);
}
operatorSymbol = divide;
clearOutputForNextDigit = true;
UpdateDisplay();
operatorEntered = true;
break;
}
if (operatorSet == 1) // Clear All
{
sprintf(outputLine,"");
operatorSymbol = none;
clearOutputForNextDigit = false;
UpdateDisplay();
break;
}
if (operatorSet == 4) //pi
{
sprintf(outputLine,"3.1415926535");
UpdateDisplay();
break;
}
case kBack:
osd->Flush();
return osEnd;
case kMenu:
return osEnd;
case kOk:
if (operatorSymbol != none)
{
operatorEntered = false;
switch(operatorSymbol)
{
case(plus):
CalculateResult(operandLine1,outputLine,cResult,'+');
break;
case(minus):
CalculateResult(operandLine1,outputLine,cResult,'-');
break;
case(multiply):
CalculateResult(operandLine1,outputLine,cResult,'*');
break;
case(divide):
CalculateResult(operandLine1,outputLine,cResult,'/');
break;
case(none):
break;
}
strcpy(outputLine,cResult);
// printf("outputLine %s\n",outputLine);
clearOutputForNextDigit = true;
operatorSymbol = none;
}
UpdateDisplay();
break;
default: return state;
}
osd->Flush();
state = osContinue;
}
return state;
}
void cCalcMain::CalculateResult(char* inOperand1, char* inOperand2, char *outOperand, char cOperator)
{
FILE *f;
// printf("inOperand1 %s inOperand2 %s operator %c\n",inOperand1,inOperand2,cOperator);
f = fopen("./bc_in.dat","w");
fprintf(f,"scale = 10\n");
fprintf(f,"%s%c%s\n",inOperand1,cOperator,inOperand2);
fclose(f);
system("bc <./bc_in.dat >./bc_out.dat");
f = fopen("./bc_out.dat","r");
if (f != NULL)
{
fscanf(f,"%s",outOperand);
fclose(f);
}
else
printf("VDR-Calc : bc run failed !!\n");
}
void cCalcMain::CalculateResultTrig(char* inOperand1, char *outOperand, char cOperator, gradType calculateGradType)
{
FILE *f;
if (calculateGradType == deg)
CalculateResult(inOperand1, "(3.1415926535/180)",inOperand1, '*');
if (calculateGradType == grad)
CalculateResult(inOperand1, "(3.1415926535/200)",inOperand1, '*');
// printf("inOperand1 %s inOperand2 %s operator %c\n",inOperand1,inOperand2,cOperator);
f = fopen("./bc_in.dat","w");
fprintf(f,"scale = 10\n");
// only valid for cOperator == s, c, t (for sin,cos,tan)
if ((cOperator == 's') || (cOperator == 'c'))
{
fprintf(f,"%c(%s)\n",cOperator, inOperand1);
}
if (cOperator == 't')
{
fprintf(f,"s(%s)/c(%s)\n",inOperand1,inOperand1);
}
fclose(f);
system("bc -l <./bc_in.dat >./bc_out.dat");
f = fopen("./bc_out.dat","r");
if (f != NULL)
{
fscanf(f,"%s",outOperand);
fclose(f);
}
else
printf("VDR-Calc : bc run failed !!\n");
clearOutputForNextDigit = true;
}
void cCalcMain::UpdateDisplay(void)
{
int stepx = 90;
#define yPos 100
#define yStep 35
if (osd)
{
// osd->DrawRectangle(10, 50, 350, 40, (unsigned int)clrBlack);
osd->DrawText(10,0,"VDRCalc",(unsigned int)clrYellow,(unsigned int)clrGray50, cFont::GetFont(fontFix));
osd->DrawText(20,30," ",(unsigned int)clrRed,(unsigned int)clrBlack, cFont::GetFont(fontFix));
osd->DrawText(20,60," ",(unsigned int)clrRed,(unsigned int)clrBlack, cFont::GetFont(fontFix));
osd->DrawText(20,50," ",(unsigned int)clrRed,(unsigned int)clrBlack, cFont::GetFont(fontFix));
osd->DrawText(30,50,outputLine,(unsigned int)clrYellow,(unsigned int)clrBlack, cFont::GetFont(fontFix));
osd->DrawText(0,yPos," ",(unsigned int)clrWhite,(unsigned int)clrGray50, cFont::GetFont(fontFix));
osd->DrawText(30,yPos," + ",(unsigned int)clrBlack,(unsigned int)clrRed, cFont::GetFont(fontFix));
osd->DrawText(30+stepx,yPos," - ",(unsigned int)clrBlack,(unsigned int)clrGreen, cFont::GetFont(fontFix));
osd->DrawText(30+2*stepx,yPos," * ",(unsigned int)clrBlack,(unsigned int)clrYellow, cFont::GetFont(fontFix));
osd->DrawText(30+3*stepx,yPos," / ",(unsigned int)clrBlack,(unsigned int)clrBlue, cFont::GetFont(fontFix));
osd->DrawText(0,yPos," ",(unsigned int)clrWhite,(unsigned int)clrGray50, cFont::GetFont(fontFix));
osd->DrawText(0,yPos+yStep," ",(unsigned int)clrWhite,(unsigned int)clrGray50, cFont::GetFont(fontFix));
osd->DrawText(0,yPos+2*yStep," ",(unsigned int)clrWhite,(unsigned int)clrGray50, cFont::GetFont(fontFix));
osd->DrawText(0,yPos+3*yStep," ",(unsigned int)clrWhite,(unsigned int)clrGray50, cFont::GetFont(fontFix));
osd->DrawText(0,yPos+4*yStep," ",(unsigned int)clrWhite,(unsigned int)clrGray50, cFont::GetFont(fontFix));
if (operatorSet == 0)
{
osd->DrawText(1,yPos,">",(unsigned int)clrWhite,(unsigned int)clrBlue, cFont::GetFont(fontFix));
}
osd->DrawText(30,yPos+yStep,"+/-",(unsigned int)clrBlack,(unsigned int)clrRed, cFont::GetFont(fontFix));
osd->DrawText(30+stepx,yPos+yStep," , ",(unsigned int)clrBlack,(unsigned int)clrGreen, cFont::GetFont(fontFix));
osd->DrawText(30+2*stepx,yPos+yStep," C ",(unsigned int)clrBlack,(unsigned int)clrYellow, cFont::GetFont(fontFix));
osd->DrawText(30+3*stepx,yPos+yStep," AC",(unsigned int)clrBlack,(unsigned int)clrBlue, cFont::GetFont(fontFix));
if (operatorSet == 1)
{
osd->DrawText(1,yPos+yStep,">",clrWhite,clrBlue, cFont::GetFont(fontFix));
}
osd->DrawText(30,yPos+2*yStep,"MIn",(unsigned int)clrBlack,(unsigned int)clrRed, cFont::GetFont(fontFix));
osd->DrawText(30+stepx,yPos+2*yStep,"MC ",(unsigned int)clrBlack,(unsigned int)clrGreen, cFont::GetFont(fontFix));
osd->DrawText(30+2*stepx,yPos+2*yStep,"MR ",(unsigned int)clrBlack,(unsigned int)clrYellow, cFont::GetFont(fontFix));
if (operatorSet == 2)
{
osd->DrawText(1,yPos+2*yStep,">",clrWhite,clrBlue, cFont::GetFont(fontFix));
}
if (eGradType == deg)
osd->DrawText(30,yPos+3*yStep,"Deg",(unsigned int)clrWhite,(unsigned int)clrRed, cFont::GetFont(fontFix));
else
osd->DrawText(30,yPos+3*yStep,"Deg",(unsigned int)clrBlack,(unsigned int)clrRed, cFont::GetFont(fontFix));
if (eGradType == rad)
osd->DrawText(30+stepx,yPos+3*yStep,"Rad",(unsigned int)clrWhite,(unsigned int)clrGreen, cFont::GetFont(fontFix));
else
osd->DrawText(30+stepx,yPos+3*yStep,"Rad",(unsigned int)clrBlack,(unsigned int)clrGreen, cFont::GetFont(fontFix));
if (eGradType == grad)
osd->DrawText(30+2*stepx,yPos+3*yStep,"Gra",(unsigned int)clrWhite,(unsigned int)clrYellow, cFont::GetFont(fontFix));
else
osd->DrawText(30+2*stepx,yPos+3*yStep,"Gra",(unsigned int)clrBlack,(unsigned int)clrYellow, cFont::GetFont(fontFix));
if (operatorSet == 3)
{
osd->DrawText(1,yPos+3*yStep,">",clrWhite,clrBlue, cFont::GetFont(fontFix));
}
osd->DrawText(30,yPos+4*yStep,"Sin",(unsigned int)clrBlack,(unsigned int)clrRed, cFont::GetFont(fontFix));
osd->DrawText(30+stepx,yPos+4*yStep,"Cos",(unsigned int)clrBlack,(unsigned int)clrGreen, cFont::GetFont(fontFix));
osd->DrawText(30+2*stepx,yPos+4*yStep,"Tan",(unsigned int)clrBlack,(unsigned int)clrYellow, cFont::GetFont(fontFix));
osd->DrawText(30+3*stepx,yPos+4*yStep,"Pi ",(unsigned int)clrBlack, (unsigned int)clrBlue, cFont::GetFont(fontFix));
if (operatorSet == 4)
{
osd->DrawText(1,yPos+4*yStep,">",clrWhite,clrBlue, cFont::GetFont(fontFix));
}
//printf("output line %s*\n",outputLine);
switch(operatorSymbol)
{
case(plus):
osd->DrawText(1,60,"+",(unsigned int)clrRed, (unsigned int)clrGray50, cFont::GetFont(fontFix));
break;
case(minus):
osd->DrawText(1,60,"-",(unsigned int)clrRed, (unsigned int)clrGray50, cFont::GetFont(fontFix));
break;
case(multiply):
osd->DrawText(1,60,"*",(unsigned int)clrRed, (unsigned int)clrGray50, cFont::GetFont(fontFix));
break;
case(divide):
osd->DrawText(1,60,"/",(unsigned int)clrRed, (unsigned int)clrGray50, cFont::GetFont(fontFix));
break;
case(none):
break;
}
if (memorySet == true)
osd->DrawText(100,100,"M",(unsigned int)clrRed, (unsigned int)clrGray50,cFont::GetFont(fontFix));
osd->Flush();
}
}
void cCalcMain::AddDigit(eKeys key)
{
if (clearOutputForNextDigit == true)
{
//printf("clear...\n");
clearOutputForNextDigit = false;
outputLine[0] = 0;
sprintf(outputLine,"%s"," ");
UpdateDisplay();
outputLine[0] = 0;
}
switch (key & ~k_Repeat) {
case k0:
sprintf(outputLine,"%s0",outputLine);
break;
case k1:
sprintf(outputLine,"%s1",outputLine);
break;
case k2:
sprintf(outputLine,"%s2",outputLine);
break;
case k3:
sprintf(outputLine,"%s3",outputLine);
break;
case k4:
sprintf(outputLine,"%s4",outputLine);
break;
case k5:
sprintf(outputLine,"%s5",outputLine);
break;
case k6:
sprintf(outputLine,"%s6",outputLine);
break;
case k7:
sprintf(outputLine,"%s7",outputLine);
break;
case k8:
sprintf(outputLine,"%s8",outputLine);
break;
case k9:
sprintf(outputLine,"%s9",outputLine);
break;
} // switch
UpdateDisplay();
}
// --- CPluginCalc --------------------------------------------------------
class CPluginCalc : public cPlugin {
private:
// Add any member variables or functions you may need here.
public:
CPluginCalc(void);
virtual ~CPluginCalc();
virtual const char *Version(void) { return VERSION; }
virtual const char *Description(void) { return DESCRIPTION; }
virtual const char *CommandLineHelp(void);
virtual bool ProcessArgs(int argc, char *argv[]);
virtual bool Start(void);
virtual void Housekeeping(void);
virtual const char *MainMenuEntry(void) { return MAINMENUENTRY; }
virtual cOsdObject *MainMenuAction(void);
virtual cMenuSetupPage *SetupMenu(void);
virtual bool SetupParse(const char *Name, const char *Value);
};
CPluginCalc::CPluginCalc(void)
{
// Initialize any member variables here.
// DON'T DO ANYTHING ELSE THAT MAY HAVE SIDE EFFECTS, REQUIRE GLOBAL
// VDR OBJECTS TO EXIST OR PRODUCE ANY OUTPUT!
}
CPluginCalc::~CPluginCalc()
{
// Clean up after yourself!
}
const char *CPluginCalc::CommandLineHelp(void)
{
// Return a string that describes all known command line options.
return NULL;
}
bool CPluginCalc::ProcessArgs(int argc, char *argv[])
{
// Implement command line argument processing here if applicable.
return true;
}
bool CPluginCalc::Start(void)
{
// Start any background activities the plugin shall perform.
return true;
}
void CPluginCalc::Housekeeping(void)
{
// Perform any cleanup or other regular tasks.
}
cOsdObject *CPluginCalc::MainMenuAction(void)
{
// Perform the action when selected from the main VDR menu.
return new cCalcMain;
}
cMenuSetupPage *CPluginCalc::SetupMenu(void)
{
// Return a setup menu in case the plugin supports one.
return NULL;
}
bool CPluginCalc::SetupParse(const char *Name, const char *Value)
{
// Parse your own setup parameters and store their values.
return false;
}
VDRPLUGINCREATOR(CPluginCalc); // Don't touch this!