private void drawArrow(PseudoButton sourceButton, PseudoButton destinationButton, Boolean successArrow)
{
Line line = new Line();
line.Visibility = System.Windows.Visibility.Visible;
line.StrokeThickness = 2;
//var x1 = GetRight(currentButton.button);
line.X1 = sourceButton.left + sourceButton.button.ActualWidth;
line.X2 = destinationButton.left;
line.Y1 = sourceButton.top + sourceButton.button.ActualHeight / 2;
line.Y2 = destinationButton.top + destinationButton.button.ActualHeight / 2;
Children.Add(line);
//Arrowhead:
var arrowheadlength = 7;
Point source = new Point(line.X1, line.Y1);
Point destination = new Point(line.X2, line.Y2);
Matrix rotatorone = new Matrix();
Vector backvect = (source - destination);
backvect.Normalize();
backvect = backvect * arrowheadlength;
rotatorone.Rotate(45);
Line arrowlineone = new Line();
arrowlineone.X1 = line.X2;
arrowlineone.Y1 = line.Y2;
Point arrowlineoneend = new Point(line.X2, line.Y2) + backvect * rotatorone;
arrowlineone.X2 = arrowlineoneend.X;
arrowlineone.Y2 = arrowlineoneend.Y;
Line arrowlinetwo = new Line();
arrowlinetwo.X1 = line.X2;
arrowlinetwo.Y1 = line.Y2;
Matrix rotatortwo = new Matrix();
rotatortwo.Rotate(-45);
Point arrowlinetwoend = new Point(line.X2, line.Y2) + backvect * rotatortwo;
arrowlinetwo.X2 = arrowlinetwoend.X;
arrowlinetwo.Y2 = arrowlinetwoend.Y;
arrowlineone.Visibility = System.Windows.Visibility.Visible;
arrowlineone.StrokeThickness = 2;
arrowlinetwo.Visibility = System.Windows.Visibility.Visible;
arrowlinetwo.StrokeThickness = 2;
if (line.X1 < line.X2)
{
if (successArrow)
{
line.Stroke = System.Windows.Media.Brushes.Black;
arrowlineone.Stroke = System.Windows.Media.Brushes.Black;
arrowlinetwo.Stroke = System.Windows.Media.Brushes.Black;
}
else
{
line.Stroke = System.Windows.Media.Brushes.Red;
arrowlineone.Stroke = System.Windows.Media.Brushes.Red;
arrowlinetwo.Stroke = System.Windows.Media.Brushes.Red;
}
}
else
{
if (successArrow)
{
line.Stroke = System.Windows.Media.Brushes.DarkGray;
arrowlineone.Stroke = System.Windows.Media.Brushes.DarkGray;
arrowlinetwo.Stroke = System.Windows.Media.Brushes.DarkGray;
}
else
{
line.Stroke = System.Windows.Media.Brushes.PaleVioletRed;
arrowlineone.Stroke = System.Windows.Media.Brushes.PaleVioletRed;
arrowlinetwo.Stroke = System.Windows.Media.Brushes.PaleVioletRed;
}
}
Children.Add(arrowlineone);
Children.Add(arrowlinetwo);
SetZIndex(line, 0);
}
public void BuildFlowchart()
{
var gdv = DataContext as gameDataView;
//Populate the flowchart view now. First, clear all old controls, which should get rid of buttons from last time
Children.Clear();//Kill the actual buttons and lines on the canvas
questButtons.Clear();
uuidToStepButton.Clear();
MinWidth = 10;
MinHeight = 10; //They get expanded below, after placing the buttons.
List <PseudoButton> notYetUsedStepButtons = new List <PseudoButton>();
PseudoButton startingButton = null;
foreach (gamedataObject questStepObj in gdv.selectedQuestStepsObservable)
{
if (questStepObj.uuid.Equals(""))
{
continue;
}
PseudoButton stepButton = new PseudoButton();
stepButton.associatedQuestStep = questStepObj;
stepButton.button.Content = questStepObj.name;
questButtons.Add(stepButton);
notYetUsedStepButtons.Add(stepButton);
uuidToStepButton.Add(questStepObj.uuid, stepButton);
if (questStepObj.uuid.Equals(gdv.gameData.firstStepID))
{
startingButton = stepButton;
}
stepButton.button.Click += delegate(object sender, RoutedEventArgs e) {
((gameDataView)DataContext).SelectedQuestStep = questStepObj;
};
Children.Add(stepButton.button);//Add the actual button to the canvas; placement is arbitrary right now but will be fixed up below
SetZIndex(stepButton.button, 1);
}
//While creating a quest, we hit this...
if (notYetUsedStepButtons.Count() == 0)
{
return;
}
//Creating a flowchart: we form columns of these step buttons.
//The first column consists of the button for the quests starting step.
//Then, we loop over all the steps in the rightmost column, and for each of those, we look at the following steps; if they are already somewhere, this is a backward loop, if they are not anywhere yet, they go into the next column.
//When we hit a point where everything in the last column either has no followon, or is a backloop, the next column is empty, so we can stop.
//Then we loop over all the steps creating arrows
List <List <PseudoButton> > columnsOfSteps = new List <List <PseudoButton> >();
List <PseudoButton> firstColumn = new List <PseudoButton>();
firstColumn.Add(startingButton);
columnsOfSteps.Add(firstColumn);
notYetUsedStepButtons.Remove(startingButton);
bool lastColumnEmpty = false;
int column = 0;
while (!lastColumnEmpty)
{
List <PseudoButton> newColumn = new List <PseudoButton>();
int currentRow = 0;
List <PseudoButton> currentColumn = columnsOfSteps.Last();
foreach (PseudoButton stepButton in currentColumn)
{
stepButton.column = column;
stepButton.row = currentRow;
currentRow++;
string stepUUID = stepButton.associatedQuestStep.uuid;
foreach (gamedataObject choiceObj in gdv.root.Items.Where <gamedataObject>(iter => [email protected]("QuestStepChoiceData") &&
iter.deleted.Equals("False") &&
iter.stepID.Equals(stepUUID)))
{
if (choiceObj.nextStep != null && choiceObj.nextStep.Count() > 0)
{
string nextStepUUID = choiceObj.nextStepID;
PseudoButton nextStepButton = null;
foreach (PseudoButton iterButton in notYetUsedStepButtons)
{
if (iterButton.associatedQuestStep.uuid.Equals(nextStepUUID))
{
nextStepButton = iterButton;
notYetUsedStepButtons.Remove(iterButton);
break;
}
}
if (nextStepButton != null)
{
newColumn.Add(nextStepButton);
}
string failStepUUID = choiceObj.failStepID;
PseudoButton failStepButton = null;
foreach (PseudoButton iterButton in notYetUsedStepButtons)
{
if (iterButton.associatedQuestStep.uuid.Equals(failStepUUID))
{
failStepButton = iterButton;
notYetUsedStepButtons.Remove(iterButton);
break;
}
}
if (failStepButton != null)
{
newColumn.Add(failStepButton);
}
}
}
}
if (newColumn.Count() == 0)
{
lastColumnEmpty = true;
}
else
{
columnsOfSteps.Add(newColumn);
column++;
}
}
//Place un-reachable nodes so they don't overlap the actual root node; right now they're still at row 0 col 0:
int unusedButtonRow = 1;
foreach (PseudoButton unusedButton in notYetUsedStepButtons)
{
unusedButton.row = unusedButtonRow;
unusedButtonRow++;
}
UpdateLayout();//This does the _internal_ layout on all of the buttons, which causes their widths to be set according to the text in them, which is needed below.
//Now that all the buttons are set up, shuffle them around to the right locations and add lines.
//Loop over all the buttons and figure out their widths, and from that, the column bounds, and from that, the bounds of each button.
double[] columnWidths = new double[questButtons.Count];
double[] cumulativeColumnWidths = new double[questButtons.Count];
foreach (PseudoButton currentButton in questButtons)
{
double textWidth = currentButton.button.ActualWidth;
if (textWidth > columnWidths[currentButton.column])
{
columnWidths[currentButton.column] = textWidth;
}
}
double cumulativeWidth = 0;
for (int i = 0; i < cumulativeColumnWidths.Length; i++)
{
cumulativeColumnWidths[i] = cumulativeWidth;
cumulativeWidth = cumulativeWidth + columnWidths[i] + 36;
}
//Now that we have valid column widths, set the location of the current button.
foreach (PseudoButton currentButton in questButtons)
{
currentButton.top = 10 + 50 * (currentButton.row);
SetTop(currentButton.button, currentButton.top);
if (currentButton.top + currentButton.button.ActualHeight + 10 > MinHeight)
{
MinHeight = currentButton.top + currentButton.button.ActualHeight + 10;
}
currentButton.left = 10 + cumulativeColumnWidths[currentButton.column];
if (currentButton.left + currentButton.button.ActualWidth + 10 > MinWidth)
{
MinWidth = currentButton.left + currentButton.button.ActualWidth + 10;
}
SetLeft(currentButton.button, currentButton.left);
}
foreach (PseudoButton currentButton in questButtons)
{
foreach (gamedataObject choiceObj in gdv.root.Items.Where <gamedataObject>(iter => [email protected]("QuestStepChoiceData") &&
iter.deleted.Equals("False") &&
iter.stepID.Equals(((gamedataObject)currentButton.associatedQuestStep).uuid)))
{
string nextStepUUID = choiceObj.nextStepID;
if (nextStepUUID != null && nextStepUUID != "")
{
PseudoButton nextStepButton = null;
uuidToStepButton.TryGetValue(nextStepUUID, out nextStepButton);
if (nextStepButton != null)
{
drawArrow(currentButton, nextStepButton, true);
}
}
string failStepUUID = choiceObj.failStepID;
if (failStepUUID != null && failStepUUID != "")
{
PseudoButton nextStepButton = null;
uuidToStepButton.TryGetValue(failStepUUID, out nextStepButton);
if (nextStepButton != null)
{
drawArrow(currentButton, nextStepButton, false);
}
}
}
}
}
