/// <summary>
/// <para>Draws a sprite graphic at a specified <see cref="Rect"/>.</para>
/// </summary>
/// <param name="rect">The <see cref="Rect"/> in which the item is drawn.</param>
/// <param name="sprite">The graphic to draw.</param>
/// <param name="style">A style used to modify the appearance of a graphic.</param>
/// <param name="selected">Whether the graphic should be rendered with a selection tint.</param>
/// <remarks>
/// <para>This implementation draws a <see cref="Texture2D"/> and crops the boundaries. This may result in
/// sprites that are tightly packed to draw artifacts.</para>
/// </remarks>
public static void DrawSprite(Rect rect, Sprite sprite,
CompiledStyleDefinition style = null, bool selected = false)
{
if (sprite == null || sprite.Equals(null) || Event.current.type != EventType.Repaint)
{
return;
}
Texture2D textureIcon = null;
Rect textureRect;
if (sprite.packed)
{
textureIcon = SpriteUtility.GetSpriteTexture(sprite, false);
}
if (textureIcon == null)
{
textureIcon = sprite.texture;
}
textureRect = sprite.rect;
DrawTexWithCoords(rect, textureIcon, textureRect, style, selected);
}
/// <summary>
/// <para>Draw a flat <see cref="Color"/>.</para>
/// </summary>
/// <param name="rect">The <see cref="Rect"/> in which the item is drawn.</param>
/// <param name="color">A <see cref="Color"/> to draw in the provided <see cref="Rect"/>.</param>
/// <param name="style">A style used to modify the appearance of a graphic.</param>
/// <param name="selected">Whether the graphic should be rendered with a selection tint.</param>
public static void DrawColor(Rect rect, Color color,
CompiledStyleDefinition style = null, bool selected = false)
{
if (Event.current.type != EventType.Repaint)
{
return;
}
if (Mathf.Abs(color.a) < 0.005f)
{
return;
}
var info = ApplyGeneralModifiers(rect, style);
if (!info.Display)
{
return;
}
// Take the edge off that color, we still want to resemble our original color.
var multiplyColor = Color.Lerp(info.Tint, Color.white, 0.5f);
multiplyColor.a = info.Tint.a;
// Blend the tint color into our color
color *= multiplyColor;
if (selected)
{
color = AssetIconsPreferences.SelectionTint.Value.Apply(color, 0.5f);
}
EditorGUI.DrawRect(info.Position, color);
}
public PositioningProcessor(CompiledStyleDefinition compiledStyleDefinition, StyleDefinition style)
{
widthProvider = new StaticValueProvider(new MathValue(1.0f, true));
heightProvider = new StaticValueProvider(new MathValue(1.0f, true));
var horizontalContext = new MathContextBuilder()
.WithTerm("width", widthProvider)
.WithTerm("height", heightProvider)
.ImplicitlyReferences(widthProvider)
.Build();
var verticalContext = new MathContextBuilder()
.WithTerm("width", widthProvider)
.WithTerm("height", heightProvider)
.ImplicitlyReferences(heightProvider)
.Build();
compiledWidth = CompiledExpression.Compile(style.Width, horizontalContext);
compiledHeight = CompiledExpression.Compile(style.Height, verticalContext);
compiledX = CompiledExpression.Compile(style.X, horizontalContext);
compiledY = CompiledExpression.Compile(style.Y, verticalContext);
compiledDisplay = CompiledExpression.Compile(style.Display, horizontalContext);
styleAnchoring = compiledStyleDefinition.Anchor;
}
/// <summary>
/// <para>Draws a portion of a texture at a specified <see cref="Rect"/>.</para>
/// </summary>
/// <param name="rect">The <see cref="Rect"/> in which the item is drawn.</param>
/// <param name="texture">The texture to draw.</param>
/// <param name="textureRect">The rect (in pixels) of the texture to draw.</param>
/// <param name="style">A style used to modify the appearance of a graphic.</param>
/// <param name="selected">Whether the graphic should be rendered with a selection tint.</param>
public static void DrawTexWithCoords(Rect rect, Texture texture, Rect textureRect,
CompiledStyleDefinition style = null, bool selected = false)
{
if (texture == null || texture.Equals(null) || Event.current.type != EventType.Repaint)
{
return;
}
var normalisedTextureRect = RemapRect(textureRect, texture.width, texture.height);
DrawTexWithUVCoords(rect, texture, normalisedTextureRect, style, selected);
}
/// <summary>
/// <para>Draws a texture graphic at a specified <see cref="Rect"/>.</para>
/// </summary>
/// <param name="rect">The <see cref="Rect"/> in which the item is drawn.</param>
/// <param name="texture">The texture to draw.</param>
/// <param name="style">A style used to modify the appearance of a graphic.</param>
/// <param name="selected">Whether the graphic should be rendered with a selection tint.</param>
public static void DrawTexture(Rect rect, Texture texture,
CompiledStyleDefinition style = null, bool selected = false)
{
if (texture == null || texture.Equals(null) || Event.current.type != EventType.Repaint)
{
return;
}
var textureRect = new Rect(0.0f, 0.0f, texture.width, texture.height);
DrawTexWithCoords(rect, texture, textureRect, style, selected);
}
/// <summary>
/// <para>Draws text at a specified <see cref="Rect"/>.</para>
/// </summary>
/// <param name="rect">The <see cref="Rect"/> in which the item is drawn.</param>
/// <param name="text">The text to draw for the asset icon.</param>
/// <param name="style">A style used to modify the appearance of a graphic.</param>
/// <param name="selected">Whether the graphic should be rendered with a selection tint.</param>
public static void DrawText(Rect rect, string text,
CompiledStyleDefinition style = null, bool selected = false)
{
if (Event.current.type != EventType.Repaint)
{
return;
}
var originalColor = GUI.color;
var guiStyle = new GUIStyle(EditorStyles.label)
{
alignment = TextAnchor.MiddleCenter,
fontStyle = FontStyle.Bold
};
if (style != null)
{
bool display;
rect = style.Filter(rect, out display);
if (!display)
{
return;
}
GUI.color = style.Tint;
TextStyle.normal.textColor = style.Tint;
TextStyle.alignment = style.TextAnchor;
TextStyle.fontStyle = style.FontStyle;
}
else
{
GUI.color = Color.black;
TextStyle.alignment = TextAnchor.MiddleCenter;
TextStyle.fontStyle = FontStyle.Normal;
}
TextStyle.fontSize = Mathf.FloorToInt(rect.height * 0.3f);
if (selected)
{
GUI.color = AssetIconsPreferences.SelectionTint.Value.Apply(GUI.color);
}
EditorGUI.LabelField(rect, text, TextStyle);
GUI.color = originalColor;
}
/// <summary>
/// <para>Draws a portion of a texture at a specified <see cref="Rect"/>.</para>
/// </summary>
/// <param name="rect">The <see cref="Rect"/> in which the item is drawn.</param>
/// <param name="texture">The texture to draw.</param>
/// <param name="uvCoords">The <see cref="Rect"/> (in normalised texture coordinates) of the <see cref="Texture"/> to draw.</param>
/// <param name="style">A style used to modify the appearance of a graphic.</param>
/// <param name="selected">Whether the graphic should be rendered with a selection tint.</param>
public static void DrawTexWithUVCoords(Rect rect, Texture texture, Rect uvCoords,
CompiledStyleDefinition style = null, bool selected = false)
{
if (texture == null || texture.Equals(null) || Event.current.type != EventType.Repaint)
{
return;
}
var info = ApplyGeneralModifiers(rect, style);
if (!info.Display)
{
return;
}
if (style != null)
{
// Get the targets aspect ratio
float aspectRatio = uvCoords.width * texture.width / (uvCoords.height * texture.height);
// Apply aspect handling
if (style.Aspect != IconAspect.Stretch)
{
info.Position = ForceAspectRatio(info.Position, aspectRatio,
style.Aspect == IconAspect.Envelop);
}
}
else
{
info.Position = ForceAspectRatio(info.Position,
texture.width * uvCoords.width / (texture.height / uvCoords.height));
}
var originalColor = GUI.color;
GUI.color = info.Tint;
if (SELECTION_TINT && selected)
{
GUI.color = AssetIconsPreferences.SelectionTint.Value.Apply(GUI.color);
}
GUI.DrawTextureWithTexCoords(info.Position, texture, uvCoords, true);
GUI.color = originalColor;
}
private static GeneralDrawInfo ApplyGeneralModifiers(Rect rect,
CompiledStyleDefinition style)
{
var info = new GeneralDrawInfo();
if (style != null)
{
info.Position = style.Filter(rect, out info.Display);
info.Tint = style.Tint;
}
else
{
info.Position = rect;
info.Tint = Color.white;
info.Display = true;
}
return(info);
}
/// <summary>
/// <para>Attempts to draw an icon for an object.</para>
/// </summary>
/// <param name="rect">The <see cref="Rect"/> in which the item is drawn.</param>
/// <param name="objectIcon">The target object to draw a graphic for.</param>
/// <param name="style">A style used to modify the appearance of a graphic.</param>
/// <param name="selected">Whether the graphic should be rendered with a selection tint.</param>
public static void DrawObject(Rect rect, object objectIcon,
CompiledStyleDefinition style = null, bool selected = false)
{
if (Event.current.type != EventType.Repaint)
{
return;
}
if (objectIcon == null)
{
return;
}
if (objectIcon.GetType() == typeof(AssetReference))
{
var assetReference = (AssetReference)objectIcon;
DrawObject(rect, assetReference.ObjectReference, style, selected);
return;
}
var iconType = objectIcon.GetType();
if (typeof(Sprite).IsAssignableFrom(iconType))
{
var spriteIcon = (Sprite)objectIcon;
if (spriteIcon != null)
{
DrawSprite(rect, spriteIcon, style, selected);
}
}
else if (typeof(Texture).IsAssignableFrom(iconType))
{
var textureIcon = (Texture)objectIcon;
if (textureIcon != null)
{
DrawTexture(rect, textureIcon, style, selected);
}
}
else if (typeof(Color).IsAssignableFrom(iconType))
{
var color = (Color)objectIcon;
DrawColor(rect, color, style, selected);
}
else if (typeof(Color32).IsAssignableFrom(iconType))
{
var color = (Color32)objectIcon;
DrawColor(rect, color, style, selected);
}
else if (typeof(string).IsAssignableFrom(iconType))
{
string iconText = (string)objectIcon;
if (!string.IsNullOrEmpty(iconText))
{
DrawText(rect, iconText, style, selected);
}
}
else if (typeof(int).IsAssignableFrom(iconType))
{
int iconText = (int)objectIcon;
DrawText(rect, iconText.ToString(), style, selected);
}
else if (typeof(GameObject).IsAssignableFrom(iconType))
{
var prefab = (GameObject)objectIcon;
if (prefab != null)
{
var col = BackgroundColor;
col = new Color(col.r, col.g, col.b, 0);
var setup = new CameraSetup()
{
BackgroundColor = col,
TransparentBackground = true,
Orthographic = style.Projection == IconProjection.Orthographic,
PreviewDirection = new Vector3(-1.0f, -1.0f, -1.0f)
};
var thumbnail = RenderCache.GetTexture(setup, prefab);
DrawTexture(rect, thumbnail, style, selected);
}
}
else
{
throw new InvalidOperationException("Could not draw icon of type " + iconType);
}
}
