public static double GetLineHeight(string fontName)
{
var editorFont = Xwt.Drawing.Font.FromName(fontName);
using (var nsFont = NSFont.FromFontName(editorFont.Family, (nfloat)editorFont.Size))
using (var lm = new NSLayoutManager())
return(lm.DefaultLineHeightForFont(nsFont));
}
public static double GetLineHeight(Xwt.Drawing.Font font)
{
if (font is null)
{
throw new ArgumentNullException(nameof(font));
}
using (var lm = new NSLayoutManager())
return(lm.DefaultLineHeightForFont(font.ToNSFont()));
}
public static float LineHeight(this NSFont font)
{
return(manager.DefaultLineHeightForFont(font));
/*
* var leading = Math.Floor (Math.Max (0, font.Leading) + 0.5f);
* var lineHeight = (float)(Math.Floor(font.Ascender + 0.5f) - Math.Floor (font.Descender + 0.5f) + leading);
*
* if (leading > 0)
* return lineHeight;
* else
* return (float)(lineHeight + Math.Floor(0.2 * lineHeight + 0.5));*/
}
public override CGRect DrawingRectForBounds(CGRect theRect)
{
var lineHeight = lm.DefaultLineHeightForFont(Font);
// Vertical text position compensation for the case when the text field is too narrow.
// 1px is not enough, but 2px would cause artifacts.
var dr = base.DrawingRectForBounds(theRect);
if (lineHeight > dr.Height)
{
dr.Y -= 1;
}
return(dr);
}
private SCNNode NodeWithText(string message, TextType type, int level)
{
var textNode = SCNNode.Create();
// Bullet
if (type == TextType.Bullet)
{
if (level == 0)
{
message = "• " + message;
}
else
{
var bullet = SCNNode.Create();
bullet.Geometry = SCNPlane.Create(10.0f, 10.0f);
bullet.Geometry.FirstMaterial.Diffuse.Contents = NSColor.FromDeviceRgba((float)(160 / 255.0), (float)(182 / 255.0), (float)(203 / 255.0), 1);
bullet.Position = new SCNVector3(80, 30, 0);
bullet.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant;
bullet.Geometry.FirstMaterial.WritesToDepthBuffer = false;
bullet.RenderingOrder = 1;
textNode.AddChildNode(bullet);
message = "\t\t\t\t" + message;
}
}
// Text attributes
var extrusion = ExtrusionDepthForTextType(type);
var text = SCNText.Create(message, extrusion);
textNode.Geometry = text;
text.Flatness = TEXT_FLATNESS;
text.ChamferRadius = (extrusion == 0 ? 0 : TEXT_CHAMFER);
text.Font = FontForTextType(type, level);
// Layout
var layoutManager = new NSLayoutManager();
var leading = layoutManager.DefaultLineHeightForFont(text.Font);
var descender = text.Font.Descender;
int newlineCount = ((string[])(((string)text.String.ToString()).Split('\n'))).Length;
textNode.Pivot = SCNMatrix4.CreateTranslation(0, -descender + newlineCount * leading, 0);
if (type == TextType.Chapter)
{
var min = new SCNVector3();
var max = new SCNVector3();
textNode.GetBoundingBox(ref min, ref max);
textNode.Position = new SCNVector3(-11, (-min.Y + textNode.Pivot.M42) * TEXT_SCALE, 7);
textNode.Scale = new SCNVector3(TEXT_SCALE, TEXT_SCALE, TEXT_SCALE);
textNode.Rotation = new SCNVector4(0, 1, 0, (float)(Math.PI / 270.0));
}
else
{
textNode.Position = new SCNVector3(-16, CurrentBaseline, 0);
textNode.Scale = new SCNVector3(TEXT_SCALE, TEXT_SCALE, TEXT_SCALE);
}
// Material
if (type == TextType.Chapter)
{
var frontMaterial = SCNMaterial.Create();
var sideMaterial = SCNMaterial.Create();
frontMaterial.Emission.Contents = NSColor.DarkGray;
frontMaterial.Diffuse.Contents = ColorForTextType(type, level);
sideMaterial.Diffuse.Contents = NSColor.LightGray;
textNode.Geometry.Materials = new SCNMaterial[] {
frontMaterial,
frontMaterial,
sideMaterial,
frontMaterial,
frontMaterial
};
}
else
{
// Full white emissive material (visible even when there is no light)
textNode.Geometry.FirstMaterial = SCNMaterial.Create();
textNode.Geometry.FirstMaterial.Diffuse.Contents = NSColor.Black;
textNode.Geometry.FirstMaterial.Emission.Contents = ColorForTextType(type, level);
// Don't write to the depth buffer because we don't want the text to be reflected
textNode.Geometry.FirstMaterial.WritesToDepthBuffer = false;
// Render last
textNode.RenderingOrder = 1;
}
return(textNode);
}
private SCNNode NodeWithText (string message, TextType type, int level)
{
var textNode = SCNNode.Create ();
// Bullet
if (type == TextType.Bullet) {
if (level == 0)
message = "• " + message;
else {
var bullet = SCNNode.Create ();
bullet.Geometry = SCNPlane.Create (10.0f, 10.0f);
bullet.Geometry.FirstMaterial.Diffuse.Contents = NSColor.FromDeviceRgba ((float)(160 / 255.0), (float)(182 / 255.0), (float)(203 / 255.0), 1);
bullet.Position = new SCNVector3 (80, 30, 0);
bullet.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant;
bullet.Geometry.FirstMaterial.WritesToDepthBuffer = false;
bullet.RenderingOrder = 1;
textNode.AddChildNode (bullet);
message = "\t\t\t\t" + message;
}
}
// Text attributes
var extrusion = ExtrusionDepthForTextType (type);
var text = SCNText.Create (message, extrusion);
textNode.Geometry = text;
text.Flatness = TEXT_FLATNESS;
text.ChamferRadius = (extrusion == 0 ? 0 : TEXT_CHAMFER);
text.Font = FontForTextType (type, level);
// Layout
var layoutManager = new NSLayoutManager ();
var leading = layoutManager.DefaultLineHeightForFont (text.Font);
var descender = text.Font.Descender;
int newlineCount = ((string[])(((string)text.String.ToString ()).Split ('\n'))).Length;
textNode.Pivot = SCNMatrix4.CreateTranslation (0, -descender + newlineCount * leading, 0);
if (type == TextType.Chapter) {
var min = new SCNVector3 ();
var max = new SCNVector3 ();
textNode.GetBoundingBox (ref min, ref max);
textNode.Position = new SCNVector3 (-11, (-min.Y + textNode.Pivot.M42) * TEXT_SCALE, 7);
textNode.Scale = new SCNVector3 (TEXT_SCALE, TEXT_SCALE, TEXT_SCALE);
textNode.Rotation = new SCNVector4 (0, 1, 0, (float)(Math.PI / 270.0));
} else {
textNode.Position = new SCNVector3 (-16, CurrentBaseline, 0);
textNode.Scale = new SCNVector3 (TEXT_SCALE, TEXT_SCALE, TEXT_SCALE);
}
// Material
if (type == TextType.Chapter) {
var frontMaterial = SCNMaterial.Create ();
var sideMaterial = SCNMaterial.Create ();
frontMaterial.Emission.Contents = NSColor.DarkGray;
frontMaterial.Diffuse.Contents = ColorForTextType (type, level);
sideMaterial.Diffuse.Contents = NSColor.LightGray;
textNode.Geometry.Materials = new SCNMaterial[] {
frontMaterial,
frontMaterial,
sideMaterial,
frontMaterial,
frontMaterial
};
} else {
// Full white emissive material (visible even when there is no light)
textNode.Geometry.FirstMaterial = SCNMaterial.Create ();
textNode.Geometry.FirstMaterial.Diffuse.Contents = NSColor.Black;
textNode.Geometry.FirstMaterial.Emission.Contents = ColorForTextType (type, level);
// Don't write to the depth buffer because we don't want the text to be reflected
textNode.Geometry.FirstMaterial.WritesToDepthBuffer = false;
// Render last
textNode.RenderingOrder = 1;
}
return textNode;
}
