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sixel: resize: don’t resize beyond the current max geometry

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Daniel Eklöf 2021-03-06 21:37:16 +01:00
parent 8ec0f15a34
commit 839b7dd32e
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1 changed files with 14 additions and 0 deletions
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sixel.c
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@ -855,6 +855,20 @@ resize(struct terminal *term, int new_width, int new_height)
new_height = (new_height + 6 - 1) / 6 * 6;
xassert(new_height % 6 == 0);
if (new_width > term->sixel.max_width)
return false;
/*
* Last row may be cropped by the max height, but don’t skip that
* last partial row entirely.
*
* I.e if max height is ‘4’, then allow resizing up to 6, to allow
* us to emit that last sixel row. The final image will be cropped
* to the current max geometry in unhook.
*/
if (new_height > (term->sixel.max_height + 5) / 6 * 6)
return false;
uint32_t *new_data = NULL;
if (new_width == old_width) {