private static void DrawBackgroundImage(StyleBlock block, Rect position, Color colorTint)
{
var backgroundImage = block.GetTexture(StyleCatalogKeyword.backgroundImage, true);
if (backgroundImage == null)
{
return;
}
var backgroundPosition = block.GetStruct <StyleBackgroundPosition>(StyleCatalogKeyword.backgroundPosition);
var backgroundSize = block.GetRect(StyleCatalogKeyword.backgroundSize, StyleRect.Size(backgroundImage.width, backgroundImage.height));
StyleRect anchor = StyleRect.Nil;
if (backgroundPosition.xEdge == StyleCatalogKeyword.left)
{
anchor.left = backgroundPosition.xOffset;
}
else if (backgroundPosition.yEdge == StyleCatalogKeyword.left)
{
anchor.left = backgroundPosition.yOffset;
}
if (backgroundPosition.xEdge == StyleCatalogKeyword.right)
{
anchor.right = backgroundPosition.xOffset;
}
else if (backgroundPosition.yEdge == StyleCatalogKeyword.right)
{
anchor.right = backgroundPosition.yOffset;
}
if (backgroundPosition.xEdge == StyleCatalogKeyword.top)
{
anchor.top = backgroundPosition.xOffset;
}
else if (backgroundPosition.yEdge == StyleCatalogKeyword.top)
{
anchor.top = backgroundPosition.yOffset;
}
if (backgroundPosition.xEdge == StyleCatalogKeyword.bottom)
{
anchor.bottom = backgroundPosition.xOffset;
}
else if (backgroundPosition.yEdge == StyleCatalogKeyword.bottom)
{
anchor.bottom = backgroundPosition.yOffset;
}
var bgRect = new Rect(position.xMin, position.yMin, backgroundSize.width, backgroundSize.height);
if (anchor.left < 1.0f)
{
bgRect.xMin = position.xMin + position.width * anchor.left - backgroundSize.width / 2f;
}
else if (anchor.left >= 1.0f)
{
bgRect.xMin = position.xMin + anchor.left;
}
if (anchor.top < 1.0f)
{
bgRect.yMin = position.yMin + position.height * anchor.top - backgroundSize.height / 2f;
}
else if (anchor.top >= 1.0f)
{
bgRect.yMin = position.yMin + anchor.top;
}
if (anchor.right == 0f || anchor.right >= 1.0f)
{
bgRect.xMin = position.xMax - backgroundSize.width - anchor.right;
}
else if (anchor.right < 1.0f)
{
bgRect.xMin = position.xMax - position.width * anchor.right - backgroundSize.width / 2f;
}
if (anchor.bottom == 0f || anchor.bottom >= 1.0f)
{
bgRect.yMin = position.yMax - backgroundSize.height - anchor.bottom;
}
if (anchor.bottom < 1.0f)
{
bgRect.yMin = position.yMax - position.height * anchor.bottom - backgroundSize.height / 2f;
}
bgRect.width = backgroundSize.width;
bgRect.height = backgroundSize.height;
using (new GUI.ColorScope(colorTint))
GUI.DrawTexture(bgRect, backgroundImage);
}
internal static void DrawBlock(GUIStyle basis, StyleBlock block, Rect drawRect, GUIContent content, DrawStates states)
{
var userRect = drawRect;
StyleRect offset = block.GetRect(StyleCatalogKeyword.position);
drawRect.xMin += offset.left;
drawRect.yMin += offset.top;
drawRect.yMax += offset.bottom;
drawRect.xMax += offset.right;
// Adjust width and height if enforced by style block
drawRect.width = basis.fixedWidth == 0f ? drawRect.width : basis.fixedWidth;
drawRect.height = basis.fixedHeight == 0f ? drawRect.height : basis.fixedHeight;
Color colorTint = GUI.color;
if (!GUI.enabled)
{
colorTint.a *= block.GetFloat(StyleCatalogKeyword.opacity, 0.5f);
}
var border = new StyleBorder(block);
var bgColorTint = GUI.backgroundColor * colorTint;
if (!block.Execute(StyleCatalogKeyword.background, DrawGradient, new GradientParams(drawRect, border.radius, bgColorTint)))
{
// Draw background color
var backgroundColor = block.GetColor(StyleCatalogKeyword.backgroundColor);
if (backgroundColor.a > 0f)
{
var smoothCorners = !border.all;
GUI.DrawTexture(drawRect, EditorGUIUtility.whiteTexture, ScaleMode.StretchToFill, false, 0f, backgroundColor * bgColorTint, Vector4.zero, border.radius, smoothCorners);
}
}
// Draw background image
if (block.HasValue(StyleCatalogKeyword.backgroundImage))
{
DrawBackgroundImage(block, drawRect, bgColorTint);
}
if (content != null)
{
var guiContentColor = GUI.contentColor;
// Compute content rect
Rect contentRect = drawRect;
if (block.GetKeyword(StyleCatalogKeyword.padding) == StyleValue.Keyword.Auto)
{
GetContentCenteredRect(basis, content, ref contentRect);
}
// Draw content (text & image)
bool hasImage = content.image != null;
float opacity = hasImage ? block.GetFloat(StyleCatalogKeyword.opacity, 1f) : 1f;
float contentImageOffsetX = hasImage ? block.GetFloat(StyleCatalogKeyword.contentImageOffsetX) : 0;
float contentImageOffsetY = hasImage ? block.GetFloat(StyleCatalogKeyword.contentImageOffsetY) : 0;
basis.Internal_DrawContent(contentRect, content, states.isHover, states.isActive, states.on, states.hasKeyboardFocus,
states.hasTextInput, states.drawSelectionAsComposition, states.cursorFirst, states.cursorLast,
states.cursorColor, states.selectionColor, guiContentColor * opacity,
0, 0, contentImageOffsetY, contentImageOffsetX, false, false);
// Handle tooltip and hovering region
if (!String.IsNullOrEmpty(content.tooltip) && contentRect.Contains(Event.current.mousePosition))
{
GUIStyle.SetMouseTooltip(content.tooltip, contentRect);
}
}
// Draw border
if (border.any)
{
GUI.DrawTexture(drawRect, EditorGUIUtility.whiteTexture, ScaleMode.StretchToFill, true, 0f, border.borderLeftColor * colorTint,
border.borderTopColor * colorTint, border.borderRightColor * colorTint, border.borderBottomColor * colorTint, border.widths, border.radius);
}
if (block.GetKeyword(k_EnableHovering) == StyleValue.Keyword.True)
{
var currentView = GUIView.current;
if (currentView != null)
{
currentView.MarkHotRegion(GUIClip.UnclipToWindow(userRect));
}
}
}
