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Keypad.spin2
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Keypad.spin2
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{
Keypad
Input widget to enter characters, numbers and special symbols
}
''-----------------------------------------------------------------------------------
CON
DEBOUNCE_TIMER = 200
K_WIDTH = 240
K_HEIGHT = 110
T_HEIGHT = 30
'Text align constants
#0, LEFT_ALIGN, CENTER_ALIGN, RIGHT_ALIGN
''-----------------------------------------------------------------------------------
''-----------------------------------------------------------------------------------
VAR
'Attributes
long id 'Unique ID - (window index << 4)|(button index)
long bg_color 'background color
long fg_color 'foreground color
long ol_color 'outline = border
word xtop 'Top Left X (Pixel)
word ytop 'Top Left Y (Pixel)
word xbot 'Bottom Right X (Pixel)
word ybot 'Bottom Right Y (Pixel)
byte border_width 'Border width in pixels
LONG image_pointer
LONG string_pointer
'Method Pointers
long event_handler 'Default event handler method pointer
'Internal state variables
long last_time 'Stores touch event debouncer last time value
long value 'Virtual value of the widget
byte configured 'Boolean flag to identify configured widgets in the window's list
byte enabled 'Boolean flag to indicate widget can be drawn and can check for events
byte invert_border 'Boolean flag to invert border colors
byte alt 'Boolean flag to indicate alternate key selection
byte lowercaps 'Indicates that lower caps is set
''-----------------------------------------------------------------------------------
''-----------------------------------------------------------------------------------
OBJ
color : "Colors"
util : "Utilities"
graphics : "Graphics"
textbox : "Text_Display"
alt_button : "Button"
lower_button : "Button"
''-----------------------------------------------------------------------------------
''-----------------------------------------------------------------------------------
DAT
'Image file for the keypad
keypad_image FILE "Keypad2.p2"
''-----------------------------------------------------------------------------------
PUB null()
''+--------------------------------------------------------------------+
'' WIDGET INTERFACE METHODS
''+--------------------------------------------------------------------+
PUB set_enable(e)
if e
enabled := true
else
enabled := false
textbox.set_enable(enabled)
PUB draw()| w, h, x, y, tw, th
''This method draws the graphical representation of this widget type
if enabled AND image_pointer <> 0
'Textbox
textbox.draw()
'Caps button
lower_button.draw()
'Alt button
alt_button.draw()
{
'Keypad Fill
x := xtop
y := ytop + T_HEIGHT
graphics.set_window(x, y, x + K_WIDTH, y + K_HEIGHT)
graphics.fill_window(bg_color)
}
'Keypad image
util.send_image(image_pointer, xtop, ytop+T_HEIGHT, K_WIDTH, K_HEIGHT, color.white)
PUB check_event(coord):is_mine | x, y
if configured AND enabled
x := coord.WORD[0]
y := coord.WORD[1]
if (x >= xtop AND x <= xbot) AND (y >= ytop AND y <= ybot)
is_mine := true
if event_handler <> 0
if (getms()-last_time) >= DEBOUNCE_TIMER 'debounce the event
'Alt button
if (x >= (xbot-40)) AND (y <= (ytop+T_HEIGHT))
'debug("button pressed")
alt_button.check_event(coord)
elseif (x >= (xbot-80)) AND (y <= (ytop+T_HEIGHT))
lower_button.check_event(coord)
else
draw_key(x,y)
PRI draw_key(x,y)|k, chrs, ptr
k := get_key_pressed(x,y)
if k <> 0
chrs := util.get_characters(string_pointer)
if k == $81 'Backspace
if chrs > 0
BYTE[string_pointer + chrs - 1] := 0
textbox.draw()
elseif k == $80 'Enter
event_handler(id, string_pointer) 'call the event handler and pass along ptr to text
util.clear_string(string_pointer, 16)
textbox.draw()
else 'Add character
ptr := 0 'initialized pointer
BYTE[ptr][0] := k
BYTE[ptr][1] := 0
util.join_strings(string_pointer, ptr, string_pointer, textbox.MAX_CHARACTERS)
textbox.refresh()
last_time := getms() 'reset debounce timer
''+--------------------------------------------------------------------+
'' CONFIGURATION METHODS
''+--------------------------------------------------------------------+
PUB configure(i, xt, yt, bg, fg, ol)
id := i
xtop := xt
ytop := yt <# (320-K_HEIGHT-T_HEIGHT)
xbot := xt + K_WIDTH
ybot := yt + K_HEIGHT + T_HEIGHT
bg_color := bg
fg_color := fg
ol_color := ol
image_pointer := @keypad_image
textbox.configure(0,xtop,ytop,K_WIDTH-80,T_HEIGHT,bg,fg,ol)
textbox.set_align(textbox.LEFT_ALIGN)
textbox.set_compression(6)
textbox.set_padding(5)
textbox.enable_buffering(false)
textbox.set_enable(true)
string_pointer := textbox.get_contents()
util.clear_string(string_pointer, 16)
alt_button.configure(0, (xbot-40), ytop, 40, T_HEIGHT, color.lighten(color.grey,8), color.black, color.grey)
alt_button.set_mode(alt_button.TOGGLE_MODE)
alt_button.set_font_size(1)
alt_button.set_compression(0)
alt_button.set_contents(@"alt")
alt_button.set_event_handler(@mode_button_event_handler)
alt_button.set_enable(true)
lower_button.configure(0, (xbot-80), ytop, 40, T_HEIGHT, color.lighten(color.grey,8), color.black, color.grey)
lower_button.set_mode(lower_button.TOGGLE_MODE)
lower_button.set_font_size(1)
lower_button.set_compression(0)
lower_button.set_contents(@"caps")
lower_button.set_event_handler(@caps_button_event_handler)
lower_button.set_enable(true)
lowercaps := 1
configured := true
last_time := getms()
PUB is_configured():conf
conf := configured
PUB get_coordinates() : coords
coords.BYTE[0] := xtop
coords.BYTE[1] := ytop
coords.BYTE[2] := xbot
coords.BYTE[3] := ybot
PUB set_bg_color(bg)
bg_color := bg
''+--------------------------------------------------------------------+
'' EVENT HANDLING METHODS
''+--------------------------------------------------------------------+
PUB set_event_handler(Method)
event_handler := Method 'Sets the default event handler of this object
PUB caps_button_event_handler(i, val)
lowercaps := (val) ? 0 : 1
if lowercaps == 1
lower_button.set_colors(color.lighten(color.grey,8), color.black, color.grey)
lower_button.set_invert(false)
else
lower_button.set_colors(color.grey, color.black, color.grey)
lower_button.set_invert(true)
lower_button.draw()
PUB mode_button_event_handler(i, val)
alt := val
if val == 0
alt_button.set_colors(color.lighten(color.grey,8), color.black, color.grey)
alt_button.set_invert(false)
else
alt_button.set_colors(color.grey, color.black, color.grey)
alt_button.set_invert(true)
alt_button.draw()
PRI get_key_pressed(x, y):key | rx, ry
'Get coordinates relative to keypad's 0,0
rx := (x - xtop)
ry := (y - ytop - T_HEIGHT)
'debug("get_key_pressed ",Udec(rx), udec(ry))
'Numbers row
if (y > ytop+T_HEIGHT) AND (ry/24 < 1)
rx := rx/24
if rx == 0
key := (alt == 0) ? $31 : $21 '1 or !
if rx == 1
key := (alt == 0) ? $32 : $40 '2 or @
if rx == 2
key := (alt == 0) ? $33 : $23 '3 or #
if rx == 3
key := (alt == 0) ? $34 : $24 '4 or $
if rx == 4
key := (alt == 0) ? $35 : $25 '5 or %
if rx == 5
key := (alt == 0) ? $36 : $5E '6 or ^
if rx == 6
key := (alt == 0) ? $37 : $26 '7 or &
if rx == 7
key := (alt == 0) ? $38 : $2A '8 or *
if rx == 8
key := (alt == 0) ? $39 : $28 '9 or (
if rx == 9
key := (alt == 0) ? $30 : $29 '0 or )
'Keys rows
if ry >= 30
'Make ry relative to Q
ry := (ry - 30)/24
rx := rx/24
'First row
if ry < 1
if rx == 0
key := (alt == 0) ? $51+$20*lowercaps : $3F 'Q or ?
if rx == 1
key := (alt == 0) ? $57+$20*lowercaps : $2B 'W or +
if rx == 2
key := (alt == 0) ? $45+$20*lowercaps : $2D 'E or -
if rx == 3
key := (alt == 0) ? $52+$20*lowercaps : $5F 'R or _
if rx == 4
key := (alt == 0) ? $54+$20*lowercaps : $5C 'T or \
if rx == 5
key := (alt == 0) ? $59+$20*lowercaps : $2F 'Y or /
if rx == 6
key := (alt == 0) ? $55+$20*lowercaps : $7B 'U or {
if rx == 7
key := (alt == 0) ? $49+$20*lowercaps : $7D 'I or }
if rx == 8
key := (alt == 0) ? $4F+$20*lowercaps : $5B 'O or [
if rx == 9
key := (alt == 0) ? $50+$20*lowercaps : $5D 'P or ]
'Second row
if ry == 1
if rx == 0
key := $41+$20*lowercaps 'A
if rx == 1
key := $53+$20*lowercaps 'S
if rx == 2
key := $44+$20*lowercaps 'D
if rx == 3
key := $46+$20*lowercaps 'F
if rx == 4
key := $47+$20*lowercaps 'G
if rx == 5
key := $48+$20*lowercaps 'H
if rx == 6
key := $4A+$20*lowercaps 'J
if rx == 7
key := $4B+$20*lowercaps 'K
if rx == 8
key := $4C+$20*lowercaps 'L
if rx == 9
key := $80 'Equal sign (ENTER)
'Third row
if ry == 2
if rx == 0
key := (alt == 0) ? $5A+$20*lowercaps : $7C 'Z or |
if rx == 1
key := (alt == 0) ? $58+$20*lowercaps : $3C 'X or <
if rx == 2
key := (alt == 0) ? $43+$20*lowercaps : $3D 'C or =
if rx == 3
key := (alt == 0) ? $56+$20*lowercaps : $3E 'V or >
if rx == 4
key := (alt == 0) ? $42+$20*lowercaps : $3A 'B or :
if rx == 5
key := (alt == 0) ? $4E+$20*lowercaps : $3B 'N or ;
if rx == 6
key := (alt == 0) ? $4D+$20*lowercaps : $2E 'M or .
if rx == 7
key := (alt == 0) ? $20 : $2C 'Whitespace or ,
if rx == 8
key := $81 '< (Backspace)
if rx == 9
key := $80 'Equal sign (ENTER)