public void DoText(Vector2 position, TextDrawData data)
{
if (Mode == ImguiMode.Render)
{
SpriteBatch.DrawString(data.Font, data.Text, position, data.Color);
}
}
public bool DoTextButton(Vector2 position, TextDrawData textData, Color background)
{
Vector2 padding = new Vector2(6f, 3f);
Vector2 size = textData.Font.MeasureString(textData.Text) + 2f * padding;
switch (Mode)
{
case ImguiMode.Update:
{
return(Input.GetMode(position, size) == InputMouseMode.Clicked);
}
case ImguiMode.Render:
{
Color backgroundColor = background;
InputMouseMode mouseMode = Input.GetMode(position, size);
// Shift the color for Hover and Down
{
int change = 60;
if (mouseMode == InputMouseMode.Hover)
{
backgroundColor = PushColor(backgroundColor, change);
}
else if (mouseMode == InputMouseMode.Down)
{
backgroundColor = PushColor(backgroundColor, -change);
}
}
// Draw bars around the box.
Vector2 barSize = new Vector2(3);
{
int change = 60;
Color barColor = PushColor(backgroundColor, change);
// Top
DrawFilledBox(position, size.X, barSize.Y, barColor);
// Left
DrawFilledBox(position + new Vector2(0f, barSize.Y), barSize.X, size.Y - barSize.Y, barColor);
barColor = PushColor(backgroundColor, -change);
// Bottom
DrawFilledBox(position + new Vector2(barSize.X, size.Y - barSize.Y), size.X - barSize.X, barSize.Y, barColor);
// Right
DrawFilledBox(position + new Vector2(size.X - barSize.X, barSize.Y), barSize.X, size.Y - 2f * barSize.Y, barColor);
}
DrawFilledBox(position + barSize, size.X - 2 * barSize.X, size.Y - 2 * barSize.Y, backgroundColor);
SpriteBatch.DrawString(textData.Font, textData.Text, position + padding, textData.Color);
return(false);
}
default:
throw new Exception("Case not handled");
}
}
public int DoDropDown(ref bool isOpen, TextDrawData textData, List <string> options, int selectedIndex)
{
Debug.Assert(scroll == null);
int dropDownHeight = textData.Font.LineSpacing;
if (isOpen)
{
dropDownHeight += options.Count * textData.Font.LineSpacing;
}
Debug.Assert(dropDownHeight <= GetRemainingHeight());
int result = imgui.DoDropDown(currentPosition, Width, dropDownHeight, ref isOpen, textData, options, selectedIndex);
currentPosition.Y += dropDownHeight;
return(result);
}
public void DoText(TextDrawData data)
{
int itemHeight = data.Font.LineSpacing;
if (scroll == null)
{
imgui.DoText(currentPosition, data);
currentPosition.Y += itemHeight;
}
else
{
if (scroll.ScrollIt(itemHeight, currentPosition))
{
imgui.DoText(currentPosition, data);
currentPosition.Y += itemHeight;
}
}
}
public int DoDropDown(Vector2 position, int width, int height, ref bool isOpen, TextDrawData textData, List <string> options, int selectedIndex)
{
// Note(ian): Do this first so that the click for the text button doesn't get picked up again here.
int result = -1;
if (Mode == ImguiMode.Update && isOpen)
{
if (Input.GetMode(position, new Vector2(width, height)) == InputMouseMode.Clicked)
{
float yOffset = Input.Mouse.Y - position.Y;
int optionStart = textData.Font.LineSpacing;
int i;
for (i = 0; i < options.Count; i++)
{
if (optionStart < yOffset && yOffset <= optionStart + textData.Font.LineSpacing)
{
result = i;
isOpen = false;
}
optionStart += textData.Font.LineSpacing;
}
}
}
Panel dropDown = new Panel(this, position, width, height);
dropDown.DoText(textData);
position.X += textData.Font.MeasureString(textData.Text).X;
if (DoTextButton(position, new TextDrawData("v", textData.Font, textData.Color), Color.DarkMagenta))
{
isOpen = !isOpen;
}
// TODO(ian): Can we get the button width somehow?
position.X += 25;
DoText(position, new TextDrawData(options[selectedIndex], textData.Font, textData.Color));
position.Y += textData.Font.LineSpacing;
if (isOpen)
{
// TODO(ian): Add some spacing and a border for the drop down.
// Todo(ian): Draw and update here.
int dropDownScrollValue = 0;// TODO(ian): where do i get this from?
dropDown.BeginScrollableSection(dropDownScrollValue);
foreach (string category in options)
{
dropDown.DoText(new TextDrawData(category, textData.Font, textData.Color));
}
dropDown.EndScrollableSection(ref dropDownScrollValue);
}
return(result);
}
