// ---------------------------------------------------------------------
/* showNumPicker =======================================================
*
* Show a number picker spinner to set the digit for a cell in the
* puzzle.
*
* ------------------------------------------------------------------ */
private void showNumPicker(FitTextView numField)
{
//Create a new dialog.
Dialog d = new Dialog(myMainActivity);
//Set dialog title.
d.SetTitle(Resource.String.numPickerTitle);
//Set layout for our num picker.
d.SetContentView(Resource.Layout.NumPickPopUp);
//Set min and max values for num picker.
NumberPicker np = d.FindViewById <NumberPicker>(Resource.Id.numberPicker1);
np.MinValue = 1;
np.MaxValue = 9;
//Get the buttons.
Button b1 = (Button)d.FindViewById <Button>(Resource.Id.button1);
Button b2 = (Button)d.FindViewById <Button>(Resource.Id.button2);
Button b3 = (Button)d.FindViewById <Button>(Resource.Id.button3);
//'Set' button will set the text field's digit.
b1.Click += (object sender, System.EventArgs e) => {
numField.Text = np.Value.ToString();
d.Dismiss();
};
//'Cancel' button just closes the dialog.
b2.Click += (object sender, EventArgs e) => {
d.Dismiss();
};
//'Clear' button resets text field to an underscore.
b3.Click += (object sender, System.EventArgs e) => {
numField.Text = "_";
d.Dismiss();
};
//Show our dialog.
d.Show();
}
// ---------------------------------------------------------------------
/* setNumText ==========================================================
*
* Set num field text with defaults for test puzzle.
*
* ------------------------------------------------------------------ */
private void setNumText(FitTextView numField)
{
//Default puzzle:
String[] defaults = new String[81];
defaults[5] = "6";
defaults[11] = "5";
defaults[12] = "4";
defaults[13] = "3";
defaults[16] = "9";
defaults[18] = "8";
defaults[20] = "4";
defaults[21] = "1";
defaults[25] = "6";
defaults[29] = "1";
defaults[32] = "3";
defaults[33] = "4";
defaults[39] = "1";
defaults[40] = "4";
defaults[41] = "7";
defaults[47] = "8";
defaults[48] = "2";
defaults[51] = "9";
defaults[55] = "1";
defaults[59] = "4";
defaults[60] = "6";
defaults[62] = "8";
defaults[64] = "7";
defaults[67] = "1";
defaults[68] = "2";
defaults[69] = "3";
defaults[75] = "7";
numField.Text = "_";
//if (defaults[numField.Id] != null)
// numField.Text = defaults[numField.Id];
}
// ---------------------------------------------------------------------
#endregion
#region Private methods
/* buildGrid ===========================================================
*
* Build the puzzle grid. This function creates the puzzle grid as a
* 3x3 grid spaced evenly across the screen. Each grid cell contains
* another 3x3 grid and each cell of the subgrids contains a textview
* that can be accessed by IDs 0 - 80.
*
* ------------------------------------------------------------------ */
private void buildGrid()
{
//A var to assign unique IDs to each textview cell in the grid.
int idCounter;
//Loop counters.
int xLoop;
int yLoop;
#region Top level grid layout:
//Create a square percent layout to hold the main grid.
SquarePercentLayout mainGridLayout = new SquarePercentLayout(myMainActivity);
//Set main grid children to wrap.
PercentRelativeLayout.LayoutParams mainGridLayoutParms = new
PercentRelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MatchParent,
ViewGroup.LayoutParams.MatchParent
);
//Set main grid layout parms.
mainGridLayout.LayoutParameters = mainGridLayoutParms;
//Set main grid background.
mainGridLayout.SetBackgroundColor(Android.Graphics.Color.Black);
//Add main grid to top layout.
this.AddView(mainGridLayout);
#endregion
//Init ID counter.
idCounter = 0;
//For each subgrid in the main grid...
for (xLoop = 0; xLoop < 9; xLoop++)
{
#region Subgrid outer frame: (LinearLayout)
//Create subgrid outer frame.
LinearLayout subGridFrame = new LinearLayout(myMainActivity);
//Create parameters for subgrid frame.
PercentRelativeLayout.LayoutParams subGridFrameLayoutParms = new
PercentRelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WrapContent,
ViewGroup.LayoutParams.WrapContent
);
//Get percent layout helper for subgrid frame.
PercentLayoutHelper.PercentLayoutInfo pctLayoutHelper =
subGridFrameLayoutParms.PercentLayoutInfo;
//Set left and top margins.
pctLayoutHelper.LeftMarginPercent = ((xLoop % 3) * (1 / 3f));
pctLayoutHelper.TopMarginPercent = ((xLoop / 3) * (1 / 3f));
//Set subgrid container width to 1/3 of parent.
pctLayoutHelper.WidthPercent = (1 / 3f);
//Set background and padding for large gridlines.
subGridFrame.SetBackgroundColor(Android.Graphics.Color.Black);
subGridFrame.SetPadding(2, 2, 2, 2);
//Set outer frame parms.
subGridFrame.LayoutParameters = subGridFrameLayoutParms;
//Set to center child view.
subGridFrame.SetGravity(GravityFlags.Center);
//Add subgrid frame to main grid.
mainGridLayout.AddView(subGridFrame);
#endregion
#region Subgrid layout: (SquarePercentLayout)
//Create a new square percent layout for the subgrid.
SquarePercentLayout subGridLayout = new SquarePercentLayout(myMainActivity);
//Set subgrid layout to match parent.
PercentRelativeLayout.LayoutParams subGridLayoutParms = new
PercentRelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WrapContent,
ViewGroup.LayoutParams.WrapContent
);
//Set subgrid layout parms.
subGridLayout.LayoutParameters = subGridLayoutParms;
//Set subgrid background.
subGridLayout.SetBackgroundColor(Android.Graphics.Color.Black);
subGridFrame.RequestLayout();
//Add subgrid to subgrid frame.
subGridFrame.AddView(subGridLayout);
#endregion
//For each cell in subgrid...
for (yLoop = 0; yLoop < 9; yLoop++)
{
#region Number field outer frame: (LinearLayout)
//Create a linear layout for the num holder outer frame.
LinearLayout numFieldLayout = new LinearLayout(myMainActivity);
//Set subgrid layout to match parent.
PercentRelativeLayout.LayoutParams numFieldLayoutParms = new
PercentRelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WrapContent,
ViewGroup.LayoutParams.WrapContent
);
//Get subgrid layout helper.
PercentLayoutHelper.PercentLayoutInfo numFieldLayoutHelper =
numFieldLayoutParms.PercentLayoutInfo;
//Set left and top margins.
numFieldLayoutHelper.LeftMarginPercent = ((yLoop % 3) * (1 / 3f));
numFieldLayoutHelper.TopMarginPercent = ((yLoop / 3) * (1 / 3f));
//Set subgrid container width.
numFieldLayoutHelper.WidthPercent = (1 / 3f);
//Set subgrid layout parms.
numFieldLayout.LayoutParameters = numFieldLayoutParms;
//Add frame to subgrid.
subGridLayout.AddView(numFieldLayout);
#endregion
#region Number field layout: (SquarePercentLayout)
//Create square percent layout for the num field.
SquarePercentLayout numFieldHolder = new SquarePercentLayout(myMainActivity);
//Set num field holder layout to match parent.
PercentRelativeLayout.LayoutParams numfieldHolderParms = new
PercentRelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WrapContent,
ViewGroup.LayoutParams.WrapContent
);
//Set subgrid layout parms.
numFieldHolder.LayoutParameters = numfieldHolderParms;
//Set subgrid padding to show small gridlines.
numFieldHolder.SetPadding(2, 2, 2, 2);
//Add num field holder to layout frame.
numFieldLayout.AddView(numFieldHolder);
#endregion
#region Number field: (FitTextView)
//Create num field.
FitTextView numField = new FitTextView(myMainActivity);
//Set numfield ID.
numField.Id = idCounter;
idCounter++;
//Center num field.
numField.Gravity = GravityFlags.Center;
//Set numfield layout to match parent view.
numField.LayoutParameters = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MatchParent,
ViewGroup.LayoutParams.MatchParent
);
//No font padding.
numField.SetIncludeFontPadding(false);
//Set so we don't lose numfield text on rotate.
numField.FreezesText = true;
//Set field text value.
setNumText(numField);
//Cells don't need focus because we are using our num picker.
numField.Focusable = false;
//Set callback for click to show our num picker.
numField.Click += (object sender, EventArgs e) => {
showNumPicker((FitTextView)sender);
};
//Set field background color.
numField.SetBackgroundColor(Android.Graphics.Color.DarkGreen);
//Lay out field.
numField.RequestLayout();
//Add field to holder.
numFieldHolder.AddView(numField);
#endregion
}
}
}
