/// <summary>
/// Get X position on canvas based on canvas width, padding and horizontal orientation
/// </summary>
/// <param name="formatting"></param>
/// <param name="canvasWidth"></param>
/// <returns></returns>
private static float GetXPosition(SlideTextFormatting.TextBoxFormatting formatting, float canvasWidth)
{
float x = formatting.HorizontalPadding;
if (formatting.HorizontalOrientation == HorizontalOrientation.Center)
{
x = canvasWidth / 2f;
}
else if (formatting.HorizontalOrientation == HorizontalOrientation.Right)
{
x = canvasWidth - formatting.HorizontalPadding;
}
return(x);
}
/// <summary>
/// Draws a text box at the given coordinates
/// </summary>
/// <param name="gr">Graphics area to draw on</param>
/// <param name="text">Text (array element per line)</param>
/// <param name="x">Horizontal starting position</param>
/// <param name="y">Vertical starting position</param>
/// <param name="formatting">Formatting</param>
/// <param name="upwards">Calculate upwards from vertical starting position</param>
/// <param name="lineSpacing">Line spacing</param>
private void DrawTextBox(Graphics gr, string[] text, float x, float y,
SlideTextFormatting.TextBoxFormatting formatting, bool upwards, int lineSpacing)
{
var numberOfLines = text.Length;
// Measure text height
var textBlockHeight = gr.MeasureString(string.Join(Environment.NewLine, text), formatting.Text.Font).Height;
// Calculate y starting position if measuring upwards
if (upwards)
{
var lineSpacingHeight = ((numberOfLines - 1) * lineSpacing);
y -= textBlockHeight + lineSpacingHeight;
}
// Text height
var textLineHeight = (textBlockHeight / numberOfLines);
var lineHeight = textLineHeight + lineSpacing;
// Draw lines
DrawLines(gr, text, x, y, formatting.Text, formatting.HorizontalOrientation, lineHeight);
}
