96 lines
1.7 KiB
NASM
96 lines
1.7 KiB
NASM
; menu bar clock
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opton
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loop:
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; redraw the window title if the active window has changed
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call get_active_window_struct
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cmp r0, [active_window_struct_ptr]
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ifnz call draw_window_title
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; if no time has passed, don't bother redrawing the clock
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in r0, 0x80000705
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cmp.8 r0, [second_counter]
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ifz jmp loop_end
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mov.8 [second_counter], r0
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; hour
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in r0, 0x80000703
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mov r1, 584
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cmp r0, 12
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ifgt call afternoon
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mov r2, 0
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mov r3, 0xFFFFFFFF
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mov r4, 0xFF3F3F3F
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mov r5, 30
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call draw_decimal_to_overlay
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; separator
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movz.8 r0, [second_counter]
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rem.8 r0, 2
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cmp r0, 0
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ifz mov r0, ':'
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ifnz mov r0, ' '
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call draw_font_tile_to_overlay
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add r1, 8
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; minute
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in r0, 0x80000704
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cmp r0, 10
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iflt call minute_less_than_10
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call draw_decimal_to_overlay
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loop_end:
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call yield_task
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rjmp loop
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draw_window_title:
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mov [active_window_struct_ptr], r0
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; if there is no active window, clear the menu bar and return
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cmp r0, 0
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ifz call clear_menu_bar
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cmp r0, 0
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ifz ret
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; get the title string pointer
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add r0, 12
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mov r0, [r0]
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; get the length of the string
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mov r1, r0
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call string_length
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; calculate the position of the text
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mov r2, 574
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mul r0, 8
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sub r2, r0
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mov r0, r1
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mov r1, r2
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; draw the text
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mov r2, 0
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mov r3, 0xFFFFFFFF
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mov r4, 0xFF3F3F3F
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mov r5, 30
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call draw_str_to_overlay
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ret
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afternoon:
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sub r0, 12
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add r1, 8
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ret
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minute_less_than_10:
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mov r0, 0
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call draw_decimal_to_overlay
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in r0, 0x80000704
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ret
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second_counter: data.8 0
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active_window_struct_ptr: data.32 0
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#include "../../fox32rom/fox32rom.def"
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#include "../../fox32os.def"
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