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StPendl StPendl Oct 29, 2011 

=Streamlining your code=
==Chapter 8 - Further reduce the amount of GUI controls==
//[[user:StPendl|1319905879]]//
We have now tasted the sweetness of removing controls, so we further reduce the amount of controls by replacing the individual color selection boxes with one for each band.

For this we just have to base our color selection on the position of the pick inside the graphics box:
[[code format="lb"]]
    ' create color fields
    FOR Band = 1 to 4
        Handle$ = "#w.Band"; Band

        #Handle$ "cls;down;fill "; BackgroundColor$
        #Handle$ "when leftButtonUp MouseClick"

        FOR Color = 1 to 10
            if Band = 4 then
                if Color > 3 then exit for

                #Handle$ "backcolor "; Tolerances$(Color,2)
            else
                #Handle$ "backcolor "; Colors$(Color,2)
            end if

            #Handle$ "place 0 "; 40*(Color-1); ";boxfilled 30 "; 40*(Color-1)+30
        NEXT

        #Handle$ "flush"

        ' apply initial settings
        if Band = 4 then
            call MouseClick Handle$, 0, 95
        else
            call MouseClick Handle$, 0, 15
        end if
    NEXT

[none]
    WAIT

[quit]
    close #w
    END

SUB MouseClick Handle$, PosX, PosY
    ' parse handle of calling control
    Band = val(Right$(Handle$, 1))

    ' get position of color
    ColorIndex = int(PosY/40)+1

    Select Case Band
        Case 1
        Band1value = (ColorIndex-1) * 10
        ColorValue1$ = Colors$(ColorIndex,2)

        Case 2
        Band2value = ColorIndex-1
        ColorValue2$ = Colors$(ColorIndex,2)

        Case 3
        Band3value = 10 ^ (ColorIndex-1)
        ColorValue3$ = Colors$(ColorIndex,2)

        Case 4
        Band4value = ColorIndex*5
        if Band4value = 15 then Band4value = 20
        ColorValue4$ = Tolerances$(ColorIndex,2)

        Case Else
        Exit Sub
    End Select
[[code]]

The complete code now looks like this.

[[code format="lb"]]
    'Resistor Calculator.bas
    'Author: salaion Yahoo! Group
    'Date: 27.11.10
    '
    ' List of Colors at http://en.wikipedia.org/wiki/List_of_colors
    '
    ' 27.11.10 00:18:50 - Initial as posted
    ' 27.11.10 00:21:40 - added array for colors and reduced redundant code for color boxes
    ' 27.11.10 00:34:07 - replaced duplicate command strings by variables
    ' 27.11.10 02:22:16 - consolidated event handler
    '
    ' always take the time for some sleep or you will make things worse ;-)
    '
    ' 27.11.10 10:56:24 - removed radio buttons
    ' 27.11.10 11:53:34 - used single graphics box for resistor
    ' 27.11.10 13:09:19 - now using the bare minimum of GUI controls

    nomainwin
    WindowWidth = 820:WindowHeight = 600
    UpperLeftX=int( (DisplayWidth- WindowWidth) /2)
    UpperLeftY=int( (DisplayHeight- WindowHeight) /2)
    BackgroundColor$ = "green"

    ' define variables to be remembered between calling the sub
    GLOBAL Band1value, Band2value, Band3value, Band4value
    GLOBAL ColorValue1$, ColorValue2$, ColorValue3$, ColorValue4$

    ' set initial band color to body color
    ColorValue1$ = "21 228 255"
    ColorValue2$ = ColorValue1$
    ColorValue3$ = ColorValue1$
    ColorValue4$ = ColorValue1$

    dim Colors$(10,2), Tolerances$(3,2)

[Colors]
    DATA "Black",  "  0   0   0"
    DATA "Brown",  "170 100  20"
    DATA "Red",    "255   0   0"
    DATA "Orange", "255 180   0"
    DATA "Yellow", "255 255   0"
    DATA "Green",  " 45 157  40"
    DATA "Blue",   "  0   0 255"
    DATA "Violet", "170   0 180"
    DATA "Gray",   "127 127 127"
    DATA "White",  "255 255 255"

[Tolerances]
    DATA "Gold",   "212 175  55"
    DATA "Silver", "200 200 250"
    DATA "None",   " 21 228 255"

    'Fill the arrays
    RESTORE [Colors]

    FOR i = 1 to 10
        READ ColorName$, ColorValue$
        Colors$(i,1) = ColorName$
        Colors$(i,2) = ColorValue$
    NEXT

    RESTORE [Tolerances]

    FOR i = 1 to 3
        READ ColorName$, ColorValue$
        Tolerances$(i,1) = ColorName$
        Tolerances$(i,2) = ColorValue$
    NEXT

    STATICTEXT #w.Ohm, "" , 500, 200, 300, 20
    STATICTEXT #w.Tole,"" , 500, 230, 300, 20

    STATICTEXT #w,Colors$( 1,1),  10,  42, 50, 20
    STATICTEXT #w,Colors$( 2,1),  10,  82, 50, 20
    STATICTEXT #w,Colors$( 3,1),  10, 122, 50, 20
    STATICTEXT #w,Colors$( 4,1),  10, 162, 50, 20
    STATICTEXT #w,Colors$( 5,1),  10, 202, 50, 20
    STATICTEXT #w,Colors$( 6,1),  10, 242, 50, 20
    STATICTEXT #w,Colors$( 7,1),  10, 282, 50, 20
    STATICTEXT #w,Colors$( 8,1),  10, 322, 50, 20
    STATICTEXT #w,Colors$( 9,1),  10, 362, 50, 20
    STATICTEXT #w,Colors$(10,1),  10, 402, 50, 20

    STATICTEXT #w,Tolerances$(1,1), 420,  42, 50, 20
    STATICTEXT #w,Tolerances$(2,1), 420,  82, 50, 20
    STATICTEXT #w,Tolerances$(3,1), 420, 122, 50, 20

    STATICTEXT #w,"K=Kilo " , 470, 300,100, 20
    STATICTEXT #w,"M=Mega " , 470, 330,100, 20
    STATICTEXT #w,"Light Blue is The Default Color of Resistance " , 470, 360,400, 20

    'Band1
    STATICTEXT #w, "First Digit",  70,  7, 80, 20
    groupbox   #w, "",             70, 20, 70,420
    graphicbox #w.Band1 ,          90, 40, 30,390
    stylebits  #w.Band1, 0,_WS_BORDER, 0,0

    'Band2
    STATICTEXT #w, "Second Digit", 150,  7, 90, 20
    groupbox   #w, "",             160, 20, 70,420
    graphicbox #w.Band2 ,          180, 40, 30,390
    stylebits  #w.Band2, 0,_WS_BORDER, 0,0

    'Band3
    STATICTEXT #w, "Multiplier",   250,  7, 80, 20
    groupbox   #w, "",             250, 20, 70,420
    graphicbox #w.Band3 ,          270, 40, 30,390
    stylebits  #w.Band3, 0,_WS_BORDER, 0,0

    'Band4
    STATICTEXT #w, "Tolerance",    340,  7, 80, 20
    groupbox   #w, "",             340, 20, 70,420
    graphicbox #w.Band4 ,          360, 40, 30,110
    stylebits  #w.Band4, 0,_WS_BORDER, 0,0

    'Fram
    graphicbox #w.title, 488,53,306,44
    stylebits  #w.title, 0,_WS_BORDER, 0,0

    'General Body Resistance
    graphicbox #w.resistor, 80,470,270,35
    stylebits  #w.resistor, 0,_WS_BORDER,0,0

    open "Resistor Calculator" for window_nf as #w
    #w "trapclose [quit]"
    #w "font Times_New_Roman 13"

    #w.title "cls;down;color blue;backcolor yellow;size 15;place 0 0;boxfilled 306 44"
    #w.title "font Times_New_Roman 16 bold;color red"
    #w.title "place 13 28;\Resistor Color Code of 4 Bands"
    #w.title "flush"

    ' create color fields
    FOR Band = 1 to 4
        Handle$ = "#w.Band"; Band

        #Handle$ "cls;down;fill "; BackgroundColor$
        #Handle$ "when leftButtonUp MouseClick"

        FOR Color = 1 to 10
            if Band = 4 then
                if Color > 3 then exit for

                #Handle$ "backcolor "; Tolerances$(Color,2)
            else
                #Handle$ "backcolor "; Colors$(Color,2)
            end if

            #Handle$ "place 0 "; 40*(Color-1); ";boxfilled 30 "; 40*(Color-1)+30
        NEXT

        #Handle$ "flush"

        ' apply initial settings
        if Band = 4 then
            call MouseClick Handle$, 0, 95
        else
            call MouseClick Handle$, 0, 15
        end if
    NEXT

[none]
    WAIT

[quit]
    close #w
    END

SUB MouseClick Handle$, PosX, PosY
    ' parse handle of calling control
    Band = val(Right$(Handle$, 1))

    ' get position of color
    ColorIndex = int(PosY/40)+1

    Select Case Band
        Case 1
        Band1value = (ColorIndex-1) * 10
        ColorValue1$ = Colors$(ColorIndex,2)

        Case 2
        Band2value = ColorIndex-1
        ColorValue2$ = Colors$(ColorIndex,2)

        Case 3
        Band3value = 10 ^ (ColorIndex-1)
        ColorValue3$ = Colors$(ColorIndex,2)

        Case 4
        Band4value = ColorIndex*5
        if Band4value = 15 then Band4value = 20
        ColorValue4$ = Tolerances$(ColorIndex,2)

        Case Else
        Exit Sub
    End Select

    'Draw Resistor
    #w.resistor "cls;down;home;posxy CenterX CenterY;fill "; BackgroundColor$
    BoxWidth  = CenterX*2
    BoxHeight = CenterY*2

    'Draw Wire
    #w.resistor "color 127 127 127;backcolor 127 127 127"
    #w.resistor "place 0 "; CenterY-2; ";boxfilled "; BoxWidth; " "; CenterY+2

    'Draw Body
    #w.resistor "color 21 228 255;backcolor 21 228 255"
    #w.resistor "place 50 0;boxfilled "; BoxWidth-50; " "; BoxHeight

    'Draw Bands
    #w.resistor "color "; ColorValue1$; ";backcolor "; ColorValue1$
    #w.resistor "place 70 0;boxfilled 85 "; BoxHeight

    #w.resistor "color "; ColorValue2$; ";backcolor "; ColorValue2$
    #w.resistor "place 100 0;boxfilled 115 "; BoxHeight

    #w.resistor "color "; ColorValue3$; ";backcolor "; ColorValue3$
    #w.resistor "place 130 0;boxfilled 145 "; BoxHeight

    #w.resistor "color "; ColorValue4$; ";backcolor "; ColorValue4$
    #w.resistor "place 160 0;boxfilled 175 "; BoxHeight

    #w.resistor "flush"

    vv=(Band1value+Band2value)*Band3value

    Select Case
        Case vv>=1000000
        #w.Ohm "Resistance Value=";vv/1000000;" M Ohm"

        Case vv>=1000
        #w.Ohm "Resistance Value=";vv/1000;" K Ohm"

        Case Else
        #w.Ohm "Resistance Value=";vv;" Ohm"
    End Select

    if Band4value>0 then #w.Tole "Tolerance Value =";"  +/- ";Band4value;"%"
END SUB
[[code]]

[[StreamLineCode1|Chapter 1 - Starting the mission]]
[[StreamLineCode2|Chapter 2 - Using arrays to reduce redundant code]]
[[StreamLineCode3|Chapter 3 - Use variables for duplicate command strings]]
[[StreamLineCode4|Chapter 4 - Consolidate event handlers]]
[[StreamLineCode5|Chapter 5 - Apply mouse selection]]
[[StreamLineCode6|Chapter 6 - Remove radio buttons]]
[[StreamLineCode7|Chapter 7 - Use a single graphics box for the resistor display]]
**Chapter 8 - Further reduce the amount of GUI controls**
[[StreamLineCode9|Chapter 9 - Adding some eye-candy]]
[[StreamLineCode10|Chapter 10 - Summary]]