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actually useful calculator example

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This commit is contained in:
Alessandro Mauri 2025-08-20 17:33:25 +02:00
parent 62ebd6592d
commit 4a690fdeb5
2 changed files with 71 additions and 18 deletions
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2
lib/ugui.c3l/src/ugui_input.c3
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@ -195,6 +195,8 @@ fn void Ctx.input_char(&ctx, char c)
ctx.input_text_utf8(b[..]);
}
fn String Ctx.get_keys(&ctx) => (String)ctx.input.keyboard.text[:ctx.input.keyboard.text_len];
// Modifier keys, like control or backspace
// TODO: make this call repetible to input modkeys one by one
fn void Ctx.input_mod_keys(&ctx, ModKeys modkeys)

87
src/main.c3
View File

@ -319,40 +319,91 @@ fn void debug_app(ugui::Ctx* ui)
ui.div_end()!!;
}
import std::os::process;
fn void calculator(ugui::Ctx* ui)
{
static char[128] buffer;
static usz len;
bool eval;
// keyboard input
switch(ui.get_keys()) {
case "+": nextcase;
case "-": nextcase;
case "*": nextcase;
case "/": nextcase;
case "(": nextcase;
case ")": nextcase;
case "0": nextcase;
case "1": nextcase;
case "2": nextcase;
case "3": nextcase;
case "4": nextcase;
case "5": nextcase;
case "6": nextcase;
case "7": nextcase;
case "8": nextcase;
case "9":
buffer[len++] = ui.get_keys()[0];
case "\n":
eval = true;
case "c":
len = 0;
case "d":
len--;
}
// ui input/output
ui.@div(ugui::DIV_FILL) {
ui.layout_set_column()!!;
ui.@div({0,0,250,50}) {
ui.text_unbounded("80085")!!;
ui.text_unbounded((String)buffer[:len])!!;
}!!;
ui.@div({0,0,250,-100}) {
ui.layout_set_row()!!;
ui.button("7")!!;
ui.button("8")!!;
ui.button("9")!!;
ui.button("7")!!.mouse_press ? buffer[len++] = '7' : 0;
ui.button("8")!!.mouse_press ? buffer[len++] = '8' : 0;
ui.button("9")!!.mouse_press ? buffer[len++] = '9' : 0;
ui.layout_next_row()!!;
ui.button("4")!!;
ui.button("5")!!;
ui.button("6")!!;
ui.button("4")!!.mouse_press ? buffer[len++] = '4' : 0;
ui.button("5")!!.mouse_press ? buffer[len++] = '5' : 0;
ui.button("6")!!.mouse_press ? buffer[len++] = '6' : 0;
ui.layout_next_row()!!;
ui.button("3")!!;
ui.button("2")!!;
ui.button("1")!!;
ui.button("3")!!.mouse_press ? buffer[len++] = '3' : 0;
ui.button("2")!!.mouse_press ? buffer[len++] = '2' : 0;
ui.button("1")!!.mouse_press ? buffer[len++] = '1' : 0;
ui.layout_next_row()!!;
ui.button(".")!!;
ui.button("0")!!;
//ui.button("")!!;
ui.button("0")!!.mouse_press ? buffer[len++] = '0' : 0;
ui.button(".")!!.mouse_press ? buffer[len++] = '.' : 0;
ui.button("(")!!.mouse_press ? buffer[len++] = '(' : 0;
ui.layout_next_column()!!;
ui.layout_set_column()!!;
ui.button("+")!!;
ui.button("-")!!;
ui.button("*")!!;
ui.button("/")!!;
ui.@div({0,0,0,-1}) {
ui.button("C")!!.mouse_press ? len = 0 : 0;
ui.button("D")!!.mouse_press ? len-- : 0;
ui.layout_next_row()!!;
ui.button("x")!!.mouse_press ? buffer[len++] = '*' : 0;
ui.button("/")!!.mouse_press ? buffer[len++] = '/' : 0;
ui.layout_next_row()!!;
ui.button("+")!!.mouse_press ? buffer[len++] = '+' : 0;
ui.button("-")!!.mouse_press ? buffer[len++] = '-' : 0;
ui.layout_next_row()!!;
ui.button(")")!!.mouse_press ? buffer[len++] = ')' : 0;
// eval the expression with 'bc'
if (ui.button("=")!!.mouse_press || eval) {
char[128] out;
String y = string::tformat("echo '%s' | bc", (String)buffer[:len]);
String x = process::execute_stdout_to_buffer(out[:128], (String[]){"sh", "-c", y}) ?? "";
buffer[:x.len] = x[..];
len = x.len;
}
}!!;
}!!;
}!!;
}