Stage basic config

[nighca]

Fixed Map size

• width: 480
• height: 360

The map size is both

• size of map
• size of window

for spx. The concept "window" (or "camera") will not be exposed to the users of Go+ Builder.

Mode

Modes spx supports currently:

• repeat: no scale & repeat if image size smaller than map [OK]
• fill: scale image to fit map [OK]
• fillRatio: scale image (with initial ratio), to cover the map [Seems not OK]
• fillCut: ? [Seems not OK]

Modes that Go+ Builder provides the users:

• Tile: The image will not be scaled, it may be tiled (repeated) to fill the stage if smaller than stage (repeat for spx)
• Scale: The image will be proportionally scaled to ensure it covers the stage; some parts of the image may be cropped (fillRatio for spx)

P.S. in both modes, the image's position is centered.

References

• Scratch: fixed map (& window) size (480x360). Background images larger than map-size will be scaled with initial ratio, to be contained by the map, the position & size can not be further adjusted
• KittenN: several fixed map (& window) sizes (900x560, 560x900). Background images' position & size can be adjusted freely.

[nighca]

Note: we need to implement backdrop-mode in StageViewer, too.

[nighca]

补充下这里的文案

En:

* Tile Mode: The image will be tiled (repeated) to fill the stage
* Scale Mode: The image will be proportionally scaled to ensure it covers the stage; some parts of the image may be cropped

Zh:

* 平铺模式：图片会平铺（重复）以填满舞台
* 缩放模式：图片会被按比例缩放，以确保刚好覆盖舞台；图片的某些部分可能会被裁减

另外右侧切换组件中的文案也应当对应使用 Tile / Scale

[nighca]

https://github.com/goplus/builder/pull/552/files#r1625474768

补充个问题，就不单独建 issue 了

[ComfyFluffy]

#552