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Maintain relative positioning when moving floating windows between outputs.

This commit is contained in:
Deiz 2012-09-30 00:30:03 -04:00 committed by Michael Stapelberg
parent 85dc1b0865
commit f4b09862fc
1 changed files with 18 additions and 11 deletions
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29
src/floating.c
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@ -220,17 +220,22 @@ void floating_enable(Con *con, bool automatic) {
/* Sanity check: Are the coordinates on the appropriate output? If not, we
* need to change them */
Output *current_output = get_output_containing(nc->rect.x, nc->rect.y);
Output *current_output = get_output_containing(nc->rect.x +
(nc->rect.width / 2), nc->rect.y + (nc->rect.height / 2));
Con *correct_output = con_get_output(ws);
if (!current_output || current_output->con != correct_output) {
DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
nc->rect.x, nc->rect.y);
/* Take the relative coordinates of the current output, then add them
* to the coordinate space of the correct output */
uint32_t rel_x = (nc->rect.x - (current_output ? current_output->con->rect.x : 0));
uint32_t rel_y = (nc->rect.y - (current_output ? current_output->con->rect.y : 0));
nc->rect.x = correct_output->rect.x + rel_x;
nc->rect.y = correct_output->rect.y + rel_y;
/* If moving from one output to another, keep the relative position
* consistent (e.g. a centered dialog will remain centered). */
if (current_output)
floating_fix_coordinates(nc, &current_output->con->rect, &correct_output->rect);
else {
nc->rect.x = correct_output->rect.x;
nc->rect.y = correct_output->rect.y;
}
}
DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
@ -634,16 +639,18 @@ void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
new_rect->x, new_rect->y, new_rect->width, new_rect->height);
/* First we get the x/y coordinates relative to the x/y coordinates
* of the output on which the window is on */
int32_t rel_x = (con->rect.x - old_rect->x);
int32_t rel_y = (con->rect.y - old_rect->y);
int32_t rel_x = con->rect.x - old_rect->x + (int32_t)(con->rect.width / 2);
int32_t rel_y = con->rect.y - old_rect->y + (int32_t)(con->rect.height / 2);
/* Then we calculate a fraction, for example 0.63 for a window
* which is at y = 1212 of a 1920 px high output */
DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
rel_x, rel_y, (double)rel_x / old_rect->width, (double)rel_y / old_rect->height,
old_rect->width, old_rect->height);
/* Here we have to multiply at first. Or we will lose precision when not compiled with -msse2 */
con->rect.x = (int32_t)new_rect->x + (double)(rel_x * (int32_t)new_rect->width) / (int32_t)old_rect->width;
con->rect.y = (int32_t)new_rect->y + (double)(rel_y * (int32_t)new_rect->height) / (int32_t)old_rect->height;
con->rect.x = (int32_t)new_rect->x + (double)(rel_x * (int32_t)new_rect->width)
/ (int32_t)old_rect->width - (int32_t)(con->rect.width / 2);
con->rect.y = (int32_t)new_rect->y + (double)(rel_y * (int32_t)new_rect->height)
/ (int32_t)old_rect->height - (int32_t)(con->rect.height / 2);
DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
}