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Ensure containers have a size of at least 1px after resize

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Fixes #2226.
Fixes #2776.
Fixes #3241.
Related to #3194.
This commit is contained in:
Orestis Floros
2018-09-06 04:56:31 +03:00
parent 09683d21a9
commit 23c1c13d34
3 changed files with 34 additions and 15 deletions
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17
src/resize.c
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@ -114,6 +114,19 @@ double px_resize_to_percent(Con *con, int px_diff) {
return ((double)target / (double)total);
}
/*
* Calculate the minimum percent needed for the given container to be at least 1
* pixel.
*
*/
double percent_for_1px(Con *con) {
Con *parent = con->parent;
const orientation_t o = con_orientation(parent);
const int total = (o == HORIZ ? parent->rect.width : parent->rect.height);
const int target = (o == HORIZ ? 1 : 1 + con->deco_rect.height);
return ((double)target / (double)total);
}
/*
* Resize the two given containers using the given amount of pixels or
* percentage points. One of the two needs to be 0. A positive amount means
@ -126,8 +139,6 @@ bool resize_neighboring_cons(Con *first, Con *second, int px, int ppt) {
assert(px * ppt == 0);
Con *parent = first->parent;
orientation_t orientation = con_orientation(parent);
const int total = (orientation == HORIZ ? parent->rect.width : parent->rect.height);
double new_first_percent;
double new_second_percent;
if (ppt) {
@ -139,7 +150,7 @@ bool resize_neighboring_cons(Con *first, Con *second, int px, int ppt) {
}
/* Ensure that no container will be less than 1 pixel in the resizing
* direction. */
if (lround(new_first_percent * total) <= 0 || lround(new_second_percent * total) <= 0) {
if (new_first_percent < percent_for_1px(first) || new_second_percent < percent_for_1px(second)) {
return false;
}