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floating_fix_coordinates: properly deal with negative positions

This commit is contained in:
Michael Stapelberg 2012-08-04 15:33:50 +02:00
parent d57d51da6d
commit 74510c59c7
1 changed files with 12 additions and 7 deletions
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19
src/floating.c
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@ -607,19 +607,24 @@ void floating_reposition(Con *con, Rect newrect) {
*
*/
void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
DLOG("Fixing coordinates of floating window %p\n", con);
DLOG("Fixing coordinates of floating window %p (rect (%d, %d), %d x %d)\n",
con, con->rect.x, con->rect.y, con->rect.width, con->rect.height);
DLOG("old_rect = (%d, %d), %d x %d\n",
old_rect->x, old_rect->y, old_rect->width, old_rect->height);
DLOG("new_rect = (%d, %d), %d x %d\n",
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 */
uint32_t rel_x = (con->rect.x - old_rect->x);
uint32_t rel_y = (con->rect.y - old_rect->y);
int32_t rel_x = (con->rect.x - old_rect->x);
int32_t rel_y = (con->rect.y - old_rect->y);
/* Then we calculate a fraction, for example 0.63 for a window
* which is at y = 1212 of a 1920 px high output */
double fraction_x = ((double)rel_x / old_rect->width);
double fraction_y = ((double)rel_y / old_rect->height);
double fraction_x = ((double)rel_x / (int32_t)old_rect->width);
double fraction_y = ((double)rel_y / (int32_t)old_rect->height);
DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
rel_x, rel_y, fraction_x, fraction_y, old_rect->width, old_rect->height);
con->rect.x = new_rect->x + (fraction_x * new_rect->width);
con->rect.y = new_rect->y + (fraction_y * new_rect->height);
con->rect.x = (int32_t)new_rect->x + (fraction_x * (int32_t)new_rect->width);
con->rect.y = (int32_t)new_rect->y + (fraction_y * (int32_t)new_rect->height);
DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
}