c - 在 GTK3 中在屏幕上绘制自定义内容的替代方法？

Question

我只知道一种在屏幕上绘制自定义内容的方法 - GTKDrawArea using Cairo

这就是我所做的： 除了每秒完全重绘屏幕 60 次之外，还有其他方法可以归档这样的东西吗？如果没有，是否存在优化选项（例如使用图层，因此不会在每帧重绘网格或一次渲染整个方案然后将其移动）？

编辑：我忘了提到 GtkGlArea，但在这个应用程序中使用起来非常困难，所以我认为它不合适。

标签： cgtk3

Answer 1

That's a very wide question, I'll have a go.

You can use GtkGLArea, that allows you to render using OpenGL which can be more low-level and thus faster than going through Cairo. It does of course make you do a lot more work.

You can also create an off-screen image and render the entire schematic to that, then just copy a suitable rectangle to match the current scroll location, that can probably be faster than doing lots of drawing.