【Unity】Unity编辑器搜索风格输入框

Unity编辑器搜索风格输入框

private GUIStyle TextFieldRoundEdge;
private GUIStyle TextFieldRoundEdgeCancelButton;
private GUIStyle TextFieldRoundEdgeCancelButtonEmpty;
private GUIStyle TransparentTextField;
/// <summary>
/// 绘制输入框，放在OnGUI函数里
/// </summary>
private void DrawInputTextField()
{
if (TextFieldRoundEdge == null)
{
TextFieldRoundEdge = new GUIStyle("SearchTextField");
TextFieldRoundEdgeCancelButton = new GUIStyle("SearchCancelButton");
TextFieldRoundEdgeCancelButtonEmpty = new GUIStyle("SearchCancelButtonEmpty");
TransparentTextField = new GUIStyle(EditorStyles.whiteLabel);
TransparentTextField.normal.textColor = EditorStyles.textField.normal.textColor;
}

//获取当前输入框的Rect(位置大小)
Rect position = EditorGUILayout.GetControlRect();
//设置圆角style的GUIStyle
GUIStyle textFieldRoundEdge = TextFieldRoundEdge;
//设置输入框的GUIStyle为透明，所以看到的“输入框”是TextFieldRoundEdge的风格
GUIStyle transparentTextField = TransparentTextField;
//选择取消按钮(x)的GUIStyle
GUIStyle gUIStyle = (m_InputSearchText != "") ? TextFieldRoundEdgeCancelButton : TextFieldRoundEdgeCancelButtonEmpty;

//输入框的水平位置向左移动取消按钮宽度的距离
position.width -= gUIStyle.fixedWidth;
//如果面板重绘
if (Event.current.type == EventType.Repaint)
{
//根据是否是专业版来选取颜色
GUI.contentColor = (EditorGUIUtility.isProSkin ? Color.black : new Color(0f, 0f, 0f, 0.5f));
//当没有输入的时候提示“请输入”
if (string.IsNullOrEmpty(m_InputSearchText))
{
textFieldRoundEdge.Draw(position, new GUIContent("请输入"), 0);
}
else
{
textFieldRoundEdge.Draw(position, new GUIContent(""), 0);
}
//因为是“全局变量”，用完要重置回来
GUI.contentColor = Color.white;
}
Rect rect = position;
//为了空出左边那个放大镜的位置
float num = textFieldRoundEdge.CalcSize(new GUIContent("")).x - 2f;
rect.width -= num;
rect.x += num;
rect.y += 1f;//为了和后面的style对其

m_InputSearchText = EditorGUI.TextField(rect, m_InputSearchText, transparentTextField);
//绘制取消按钮，位置要在输入框右边
position.x += position.width;
position.width = gUIStyle.fixedWidth;
position.height = gUIStyle.fixedHeight;
if (GUI.Button(position, GUIContent.none, gUIStyle) && m_InputSearchText != "")
{
m_InputSearchText = "";
//用户是否做了输入
GUI.changed = true;
//把焦点移开输入框
GUIUtility.keyboardControl = 0;
}
}