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xwindow_translate_for_gravity: Change instead of set argument

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Previously, this function overwrote the value of its argument with the
result. After this change, the function merely changes the given
variable by the calculated argument.

Thus, the old behaviour is achieved by setting the variable to zero
before the call, which all callers already did. However, for most
callers this change means that a temporary variable can be removed and
instead xwindow_translate_for_gravity() will directly change the target
variable.

No change in behaviour intended.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2018-08-17 09:58:30 +02:00
parent bbc4fba3c0
commit 21b7b29630
3 changed files with 8 additions and 18 deletions
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8
event.c
View file

@ -345,17 +345,13 @@ event_handle_configurerequest(xcb_configure_request_event_t *ev)
if(ev->value_mask & XCB_CONFIG_WINDOW_X)
{
int16_t diff = 0;
geometry.x = ev->x;
xwindow_translate_for_gravity(c->size_hints.win_gravity, deco_left, 0, deco_right, 0, &diff, NULL);
geometry.x += diff;
xwindow_translate_for_gravity(c->size_hints.win_gravity, deco_left, 0, deco_right, 0, &geometry.x, NULL);
}
if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
{
int16_t diff = 0;
geometry.y = ev->y;
xwindow_translate_for_gravity(c->size_hints.win_gravity, 0, deco_top, 0, deco_bottom, NULL, &diff);
geometry.y += diff;
xwindow_translate_for_gravity(c->size_hints.win_gravity, 0, deco_top, 0, deco_bottom, NULL, &geometry.y);
}
if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
{

10
objects/client.c
View file

@ -1387,12 +1387,9 @@ border_width_callback(client_t *c, uint16_t old_width, uint16_t new_width)
{
area_t geometry = c->geometry;
int16_t diff = new_width - old_width;
int16_t diff_x = 0, diff_y = 0;
xwindow_translate_for_gravity(c->size_hints.win_gravity,
diff, diff, diff, diff,
&diff_x, &diff_y);
geometry.x += diff_x;
geometry.y += diff_y;
&geometry.x, &geometry.y);
/* inform client about changes */
client_resize_do(c, geometry);
}
@ -2870,13 +2867,10 @@ titlebar_resize(lua_State *L, int cidx, client_t *c, client_titlebar_t bar, int
if(c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_WIN_GRAVITY)
{
int16_t diff_x = 0, diff_y = 0;
xwindow_translate_for_gravity(c->size_hints.win_gravity,
diff_left, diff_top,
diff_right, diff_bottom,
&diff_x, &diff_y);
geometry.x += diff_x;
geometry.y += diff_y;
&geometry.x, &geometry.y);
}
c->titlebar[bar].size = size;

8
xwindow.c
View file

@ -400,8 +400,8 @@ xwindow_set_shape(xcb_window_t win, int width, int height, enum xcb_shape_sk_t k
* \param change_height_before The window height difference that will be applied.
* \param change_width_after The window width difference that will be applied.
* \param change_height_after The window height difference that will be applied.
* \param dx On return, this will be set to the amount the pixel has to be moved.
* \param dy On return, this will be set to the amount the pixel has to be moved.
* \param dx On return, this will be changed by the amount the pixel has to be moved.
* \param dy On return, this will be changed by the amount the pixel has to be moved.
*/
void xwindow_translate_for_gravity(xcb_gravity_t gravity, int16_t change_width_before, int16_t change_height_before,
int16_t change_width_after, int16_t change_height_after, int16_t *dx, int16_t *dy)
@ -449,9 +449,9 @@ void xwindow_translate_for_gravity(xcb_gravity_t gravity, int16_t change_width_b
}
if (dx)
*dx = x;
*dx += x;
if (dy)
*dy = y;
*dy += y;
}
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