96 lines
1.8 KiB
NASM
96 lines
1.8 KiB
NASM
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; button widget routines
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; button widget struct:
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; data.32 next_ptr - pointer to next widget, or 0 for none
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; data.32 id - the ID number of this widget
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; data.32 type - the type of this widget
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; data.32 text_ptr - pointer to null-terminated text string
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; data.32 foreground_color - text foreground color
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; data.32 background_color - button background color
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; data.16 width - width of this button
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; data.16 reserved
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; data.16 x_pos - X coordinate of this widget
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; data.16 y_pos - Y coordinate of this widget
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const BUTTON_WIDGET_STRUCT_SIZE: 32 ; 8 words = 32 bytes
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; draw a button widget to a window
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; FIXME: this needs some major cleanup, this is like register soup
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; inputs:
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; r0: pointer to window struct
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; r1: pointer to a null-terminated string
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; r2: foreground color
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; r3: background color
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; r4: button width
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; r5: X coordinate
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; r6: Y coordinate
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draw_button_widget:
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push r0
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push r1
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push r2
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push r3
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push r4
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push r5
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push r10
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push r20
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push r30
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push r31
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push r1
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mov r20, 0
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draw_button_widget_strlen_loop:
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inc r1
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inc r20
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cmp.8 [r1], 0
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ifnz jmp draw_button_widget_strlen_loop
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pop r1
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mov r30, r5
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mov r31, r4
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div r4, 2
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mul r20, 8
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div r20, 2
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sub r4, r20
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add r5, r4
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call get_window_overlay_number
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mov r10, r0
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push r1
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push r2
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push r3
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push r4
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push r5
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mov r5, r0
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mov r2, r31
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mov r4, r3
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mov r3, 16
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mov r0, r30
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mov r1, r6
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call draw_filled_rectangle_to_overlay
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pop r5
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pop r4
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pop r3
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pop r2
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pop r1
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mov r0, r1
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mov r4, r3
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mov r3, r2
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mov r1, r5
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mov r2, r6
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mov r5, r10
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call draw_str_to_overlay
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pop r31
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pop r30
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pop r20
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pop r10
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pop r5
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pop r4
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pop r3
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pop r2
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pop r1
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pop r0
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ret
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