compsitor-x11: Report more accurate dimension of outputs
We use the X screen DPI to compute the X11 compositor output size,
which gives us a more accurate and useful value in the wl_output
geometry event.
diff --git a/src/compositor-x11.c b/src/compositor-x11.c
index ce1c071..56b3228 100644
--- a/src/compositor-x11.c
+++ b/src/compositor-x11.c
@@ -761,7 +761,7 @@
xcb_screen_iterator_t iter;
struct wm_normal_hints normal_hints;
struct wl_event_loop *loop;
- int output_width, output_height;
+ int output_width, output_height, width_mm, height_mm;
int ret;
uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
xcb_atom_t atom_list[1];
@@ -876,8 +876,12 @@
if (configured_name)
output->base.name = strdup(configured_name);
+ width_mm = width * c->screen->width_in_millimeters /
+ c->screen->width_in_pixels;
+ height_mm = height * c->screen->height_in_millimeters /
+ c->screen->height_in_pixels;
weston_output_init(&output->base, &c->base,
- x, y, width, height, transform, scale);
+ x, y, width_mm, height_mm, transform, scale);
if (c->use_pixman) {
if (x11_output_init_shm(c, output,