我正在使用Win2D编写一个Windows 10应用程序,并尝试绘制一个形状,该形状可以动态缩放以适应其中的任何文本。
我想做的是找出使用给定CanvasTextFormat绘制的特定字符串的大小,然后将其用于设置形状的大小。
我的问题是我似乎找不到一种方法来计算字符串的大小?
看下面的代码以计算所需的大小(查找“theRectYouAreLookingFor”)
private void CanvasControl_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
CanvasDrawingSession drawingSession = args.DrawingSession;
float xLoc = 100.0f;
float yLoc = 100.0f;
CanvasTextFormat format = new CanvasTextFormat {FontSize = 30.0f, WordWrapping = CanvasWordWrapping.NoWrap};
CanvasTextLayout textLayout = new CanvasTextLayout(drawingSession, "Hello World!", format, 0.0f, 0.0f);
Rect theRectYouAreLookingFor = new Rect(xLoc + textLayout.DrawBounds.X, yLoc + textLayout.DrawBounds.Y, textLayout.DrawBounds.Width, textLayout.DrawBounds.Height);
drawingSession.DrawRectangle(theRectYouAreLookingFor, Colors.Green, 1.0f);
drawingSession.DrawTextLayout(textLayout, xLoc, yLoc, Colors.Yellow);
}
如果您像Michael Vach
的示例中一样,使用0
的requestedWidth
创建了一个CanvasTextLayout
,则可能希望在Win2D 1.23中禁用自动换行。方法如下:
var textLayout = new CanvasTextLayout(drawingSession, "Hello World!", fontFormat, 0.0f, 0.0f) {
WordWrapping = CanvasWordWrapping.NoWrap
};
var completeOuterSize = textLayout.LayoutBounds