Free Simple Calculator in php gtk2 with source code. This calculator perform basic arithmetic operations i.e Addition, Subtraction, Multiplication, Division. Hope you like it. Thanks! For reading my Blog.
<?php
/*
PHP GTK tutorials
website: http://phpgtktutorials.blogspot.in/
*/
if (!class_exists('gtk')) {
die("Please load the php-gtk2 module in your php.ini\r\n");
}
$wnd = new GtkWindow();
$action = NULL;
$firstValue = NULL;
$result =NULL;
function pressClear(GtkWindow $wnd, GtkEntry $txtEntry, $txtButton)
{
//clear $txtEntry
$txtEntry->set_text($txtButton);
}
function pressBack(GtkWindow $wnd, GtkEntry $txtEntry)
{
//backspace
$txtEntryValue = $txtEntry->get_text();
$newTxtEntryValue = substr("$txtEntryValue", 0, -1);
$txtEntry->set_text($newTxtEntryValue);
}
function pressAction(GtkWindow $wnd, GtkEntry $txtEntry, $currentAction, $label, $action)
{
$firstValue = $txtEntry->get_text();
$txtEntry->set_text(NULL);
$label->set_text($firstValue);
$action->set_text($currentAction);
}
function pressEqualto(GtkWindow $wnd, GtkEntry $txtEntry, $action, $label)
{
$secondValue = $txtEntry->get_text();
$firstValue = $label->get_text();
$currentaction = $action->get_text();
if($currentaction=="+")
{
$result = $firstValue+$secondValue;
}
elseif ($currentaction=="*") {
$result = $firstValue*$secondValue;
}
elseif ($currentaction=="/") {
$result = $firstValue/$secondValue;
}
elseif ($currentaction=="-") {
$result = $firstValue-$secondValue;
}
$txtEntry->set_text($result);
}
function pressButton(GtkWindow $wnd, GtkEntry $txtEntry, $txtButton)
{
//get the values from the widgets into variables
$txtEntryValue = $txtEntry->get_text();
if(empty($txtEntryValue))
{
$txtEntry->set_text($txtButton);
}else{
$txtEntry->set_text($txtEntryValue.$txtButton);
}
}
$wnd->set_title('Calculator');
$wnd->connect_simple('destroy', array('gtk', 'main_quit'));
$vbox = new GtkVBox(false, 2);
$mb = new GtkMenubar();
$filemenu = new GtkMenu();
$filemi = new GtkMenuItem("File");
$filemi->set_submenu($filemenu);
$mb->append($filemi);
$vbox->pack_start($mb, false, false, 0);
$table = new GtkTable(5, 4, true);
// Set up all the widgets we need
$btnClose = new GtkButton("_Close");
$btnOne = new GtkButton("1");
$btnTwo = new GtkButton("2");
$btnThree = new GtkButton("3");
$btnFour = new GtkButton("4");
$btnFive = new GtkButton("5");
$btnSix = new GtkButton("6");
$btnSeven = new GtkButton("7");
$btnEight = new GtkButton("8");
$btnNine = new GtkButton("9");
$btnZero = new GtkButton("0");
$btnClear = new GtkButton("Clear");
$btnBack = new GtkButton("Clear Entry");
$btnAddition = new GtkButton("+");
$btnDivide = new GtkButton("/");
$btnMinus = new GtkButton("-");
$btnProduct = new GtkButton("*");
$btnEqualto = new GtkButton("=");
$labelHidden = new GtkLabel(); // store firstvalue
$labelAction = new GtkLabel(); // store operations
$table->attach($btnClear, 0, 1, 0, 1);
$table->attach($btnBack, 1, 2, 0, 1);
@$wnd->set_title($labelHidden);
@$wnd->set_title($labelAction);
$table->attach($btnClose, 3, 4, 0, 1);
$table->attach($btnSeven, 0, 1, 1, 2);
$table->attach($btnEight, 1, 2, 1, 2);
$table->attach($btnNine, 2, 3, 1, 2);
$table->attach($btnDivide, 3, 4, 1, 2);
$table->attach($btnFour, 0, 1, 2, 3);
$table->attach($btnFive, 1, 2, 2, 3);
$table->attach($btnSix, 2, 3, 2, 3);
$table->attach($btnProduct, 3, 4, 2, 3);
$table->attach($btnOne, 0, 1, 3, 4);
$table->attach($btnTwo, 1, 2, 3, 4);
$table->attach($btnThree, 2, 3, 3, 4);
$table->attach($btnMinus, 3, 4, 3, 4);
$table->attach($btnZero, 0, 1, 4, 5);
$table->attach(new GtkButton("."), 1, 2, 4, 5);
$table->attach($btnEqualto, 2, 3, 4, 5);
$table->attach($btnAddition, 3, 4, 4, 5);
$txtEntry = new GtkEntry();
$vbox->pack_start($txtEntry, false, false, 0);
$vbox->pack_end($table, true, true, 0);
$wnd->add($vbox);
// Destroy the window when the user clicks Close button
$btnClose->connect_simple('clicked', array($wnd, 'destroy'));
// Clear entry label when the user clicks Clear button
$btnClear->connect_simple('clicked', 'pressClear', $wnd, $txtEntry, NULL);
// BackSpace label when the user clicks Back button
$btnBack->connect_simple('clicked', 'pressBack', $wnd, $txtEntry);
// Call the pressEqualto function
$btnEqualto->connect_simple('clicked', 'pressEqualto', $wnd, $txtEntry, $labelAction, $labelHidden);
// Call the pressAction function when the user clicks on numeric button
$btnAddition->connect_simple('clicked', 'pressAction', $wnd, $txtEntry, "+", $labelHidden, $labelAction);
$btnDivide->connect_simple('clicked', 'pressAction', $wnd, $txtEntry, "/", $labelHidden, $labelAction);
$btnMinus->connect_simple('clicked', 'pressAction', $wnd, $txtEntry, "-", $labelHidden, $labelAction);
$btnProduct->connect_simple('clicked', 'pressAction', $wnd, $txtEntry, "*", $labelHidden, $labelAction);
// Call the pressButton function when the user clicks on numeric button
$btnOne->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "1");
$btnTwo->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "2");
$btnThree->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "3");
$btnFour->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "4");
$btnFive->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "5");
$btnSix->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "6");
$btnSeven->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "7");
$btnEight->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "8");
$btnNine->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "9");
$btnZero->connect_simple('clicked', 'pressButton', $wnd, $txtEntry, "0");
$wnd->set_default_size(300, 250);
$wnd->set_position(GTK::WIN_POS_CENTER);
//Show all widgets
$wnd->show_all();
//Start the main loop
Gtk::main();
?>
