Spriteful TErminal GrAphics Protocol: Difference between revisions
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===Scrolling=== | ===Scrolling=== | ||
Pixels drawn in the lowermost, rightmost cell of the visible area <b>must not</b>, in and of themselves, result in scrolling. | Pixels drawn in the lowermost, rightmost cell of the visible area <b>must not</b>, in and of themselves, result in scrolling. | ||
Pixels logically below the visible area must be ignored if scrolling is disabled. If scrolling is enabled (see [[#Scrolling|below]]), such pixels must cause scrolling equivalent to the ceiling of (rows beyond the bottom / cell height), both measured in pixels. For instance, if graphics scrolling is enabled, and cells are 10 pixels tall, and the cursor is on the bottom row when the graphic is emitted, and the graphic is 32 pixels tall, the terminal ought scroll up three rows (10 can be displayed, 32 - 10 = 22, ⌈22 / 10⌉ = 3). If scrolling is disabled, the terminal <i>may</i> make such pixels visible if the visible area is made taller, but this is not required. | |||
==Terminal obligations== | ==Terminal obligations== | ||