diff options
| -rw-r--r-- | textscreen/Makefile.am | 5 | ||||
| -rw-r--r-- | textscreen/calculator.c | 160 |
2 files changed, 164 insertions, 1 deletions
diff --git a/textscreen/Makefile.am b/textscreen/Makefile.am index 49a0374d..442839fc 100644 --- a/textscreen/Makefile.am +++ b/textscreen/Makefile.am @@ -2,7 +2,7 @@ AM_CFLAGS = @SDL_CFLAGS@ -I../src noinst_LIBRARIES=libtextscreen.a -bin_PROGRAMS=guitest +bin_PROGRAMS=guitest calculator libtextscreen_a_SOURCES = \ txt_checkbox.c txt_checkbox.h \ @@ -24,3 +24,6 @@ libtextscreen_a_SOURCES = \ guitest_LDADD = @SDL_LIBS@ libtextscreen.a guitest_SOURCES = guitest.c +calculator_LDADD = @SDL_LIBS@ libtextscreen.a +calculator_SOURCES = calculator.c + diff --git a/textscreen/calculator.c b/textscreen/calculator.c new file mode 100644 index 00000000..d51d4f9c --- /dev/null +++ b/textscreen/calculator.c @@ -0,0 +1,160 @@ + +#include <stdio.h> +#include <string.h> +#include "txt_button.h" +#include "txt_desktop.h" +#include "txt_label.h" + +typedef enum +{ + OP_NONE, + OP_PLUS, + OP_MINUS, + OP_MULT, + OP_DIV, +} operator_t; + +int starting_input = 0; +int input_value = 0; +txt_label_t *input_box; +int first_operand; +operator_t operator = OP_NONE; + +void UpdateInputBox(void) +{ + char buf[20]; + + sprintf(buf, " %i", input_value); + TXT_SetLabel(input_box, buf); +} + +void InsertNumber(TXT_UNCAST_ARG(button), TXT_UNCAST_ARG(value)) +{ + TXT_CAST_ARG(int, value); + + if (starting_input) + { + input_value = 0; + starting_input = 0; + } + + input_value *= 10; + input_value += *value; + UpdateInputBox(); +} + +void AddNumberButton(txt_table_t *table, int value) +{ + txt_button_t *button; + char buf[10]; + int *val_copy; + + val_copy = malloc(sizeof(int)); + *val_copy = value; + + sprintf(buf, " %i ", value); + + button = TXT_NewButton(buf); + TXT_AddWidget(table, button); + TXT_SignalConnect(button, "pressed", InsertNumber, val_copy); +} + +void Operator(TXT_UNCAST_ARG(button), TXT_UNCAST_ARG(op)) +{ + TXT_CAST_ARG(operator_t, op); + + first_operand = input_value; + operator = *op; + starting_input = 1; +} + +void AddOperatorButton(txt_table_t *table, char *label, operator_t op) +{ + txt_button_t *button; + char buf[10]; + operator_t *op_copy; + + op_copy = malloc(sizeof(operator_t)); + *op_copy = op; + + sprintf(buf, " %s ", label); + button = TXT_NewButton(buf); + + TXT_AddWidget(table, button); + TXT_SignalConnect(button, "pressed", Operator, op_copy); +} + +void Calculate(TXT_UNCAST_ARG(button), void *unused) +{ + switch (operator) + { + case OP_PLUS: + input_value = first_operand + input_value; + break; + case OP_MINUS: + input_value = first_operand - input_value; + break; + case OP_MULT: + input_value = first_operand * input_value; + break; + case OP_DIV: + input_value = first_operand / input_value; + break; + } + + UpdateInputBox(); + + operator = OP_NONE; + starting_input = 1; +} + +void BuildGUI() +{ + txt_window_t *window; + txt_table_t *table; + txt_button_t *equals_button; + + window = TXT_NewWindow("Calculator"); + + TXT_AddWidget(window, TXT_NewSeparator(NULL)); + input_box = TXT_NewLabel("asdf"); + TXT_AddWidget(window, input_box); + TXT_AddWidget(window, TXT_NewSeparator(NULL)); + TXT_AddWidget(window, TXT_NewLabel("")); + + table = TXT_NewTable(4); + TXT_AddWidget(window, table); + + AddNumberButton(table, 7); + AddNumberButton(table, 8); + AddNumberButton(table, 9); + AddOperatorButton(table, "*", OP_MULT); + AddNumberButton(table, 4); + AddNumberButton(table, 5); + AddNumberButton(table, 6); + AddOperatorButton(table, "-", OP_MINUS); + AddNumberButton(table, 1); + AddNumberButton(table, 2); + AddNumberButton(table, 3); + AddOperatorButton(table, "+", OP_PLUS); + AddNumberButton(table, 0); + TXT_AddWidget(table, TXT_NewLabel("")); + equals_button = TXT_NewButton(" = "); + TXT_SignalConnect(equals_button, "pressed", Calculate, NULL); + TXT_AddWidget(table, equals_button); + AddOperatorButton(table, "/", OP_DIV); + + TXT_AddWidget(window, TXT_NewLabel("")); + UpdateInputBox(); +} + +int main() +{ + TXT_Init(); + TXT_SetDesktopTitle("Calculator demo"); + + BuildGUI(); + + TXT_GUIMainLoop(); +} + |