/// <summary>
/// Defines the dimensions of the text that's being added. For this to
/// work, the <see cref="Entity"/> property must be defined beforehand.
/// </summary>
/// <param name="str">The text involved</param>
/// <returns>True if dimensions set ok. False if the entity type
/// was not defined, or it does not have an associated font.</returns>
protected bool SetDimensions(string str)
{
// Confirm the entity type has been defined
if (m_Entity == null)
{
MessageBox.Show("AddLabelUI.SetDimensions - Text type not specified.");
DialFinish(null);
return(false);
}
// Remember the text that the dimensions correspond to
m_Text = str;
// The entity type provides the height of the text (in point units)
IFont fontInfo = m_Entity.Font;
if (fontInfo == null)
{
fontInfo = FontInfo.Default;
}
// Figure out the ground height at the map's nominal scale
float fontSize = fontInfo.PointSize;
uint nominalScale = EditingController.Current.Project.Settings.NominalMapScale;
double ht = (double)fontSize * (double)nominalScale * MathConstants.POINTSIZE_TO_METERS;
// Convert into pixels on the active display
float htPixels = ActiveDisplay.LengthToDisplay(ht);
Font font = new Font(fontInfo.TypeFace, htPixels, fontInfo.Modifiers, GraphicsUnit.Pixel);
// Get the size of the text
Size proposedSize = new Size(int.MaxValue, int.MaxValue);
Size size = TextRenderer.MeasureText(str, font, proposedSize,
(TextFormatFlags.NoPadding | TextFormatFlags.NoClipping | TextFormatFlags.NoPrefix));
// Remember the width and height of the text, in ground units (if
// we stored logical units, the meaning of the values might change
// if the scale changed during label positioning).
ISpatialDisplay display = ActiveDisplay;
m_Width = display.DisplayToLength((float)size.Width);
m_Height = display.DisplayToLength((float)size.Height);
// Reset the position of the last text outline that was drawn.
m_LastPos = null;
return(true);
}
/// <summary>
/// The size of icons used during check reviews, in meters on the ground.
/// </summary>
/// <param name="display">The display where the icons will be drawn</param>
/// <returns>The size (height and width) of icons used as check markers</returns>
protected double IconSize(ISpatialDisplay display)
{
return(display.DisplayToLength(32.0F));
}
/// <summary>
/// The size of icons used during check reviews, in meters on the ground.
/// </summary>
/// <param name="display">The display where the icons will be drawn</param>
/// <returns>The size (height and width) of icons used as check markers</returns>
protected double IconSize(ISpatialDisplay display)
{
return display.DisplayToLength(32.0F);
}
