绘制蓝色“未读取点”在iPhone邮件应用程序 [英] Drawing the blue "unread dot" on the iPhone Mail app

问题描述

有谁有一个例子，如何绘制蓝色的未读点在苹果的邮件应用程序中使用？这一个特定：

Does anyone have an example of how to draw the blue "unread dot" used in Apple's Mail App? This one in specific:

使用Quartz2d绘制椭圆是直接的，但是阴影+渐变的微妙使用使得这看起来真的是3d。

Drawing an ellipse is straight forward with Quartz2d, but the subtle use of shadows+gradients make this look really 3d.

推荐答案

我认为邮件中的蓝点实际上是一个图像;我想象，blting一个图像将比绘制一个渐变更快。

I think the blue dot in mail is actually an image; I would imagine that blitting an image would be faster than drawing a gradient.

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