Lisp_Object display;
{
struct mac_display_info *dpyinfo = check_x_display_info (display);
+ float mm_per_pixel;
- /* Only of the main display. */
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1030
#if MAC_OS_X_VERSION_MIN_REQUIRED == 1020
if (CGDisplayScreenSize != NULL)
BLOCK_INPUT;
size = CGDisplayScreenSize (kCGDirectMainDisplay);
+ mm_per_pixel = size.height / CGDisplayPixelsHigh (kCGDirectMainDisplay);
UNBLOCK_INPUT;
-
- return make_number ((int) (size.height + .5f));
}
#if MAC_OS_X_VERSION_MIN_REQUIRED == 1020
else
#if MAC_OS_X_VERSION_MAX_ALLOWED < 1030 || MAC_OS_X_VERSION_MIN_REQUIRED == 1020
{
/* This is an approximation. */
- return make_number ((int) (dpyinfo->height * 25.4 / dpyinfo->resy));
+ mm_per_pixel = 25.4f / dpyinfo->resy;
}
#endif
+
+ return make_number ((int) (dpyinfo->height * mm_per_pixel + 0.5f));
}
DEFUN ("x-display-mm-width", Fx_display_mm_width, Sx_display_mm_width, 0, 1, 0,
Lisp_Object display;
{
struct mac_display_info *dpyinfo = check_x_display_info (display);
+ float mm_per_pixel;
- /* Only of the main display. */
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1030
#if MAC_OS_X_VERSION_MIN_REQUIRED == 1020
if (CGDisplayScreenSize != NULL)
BLOCK_INPUT;
size = CGDisplayScreenSize (kCGDirectMainDisplay);
+ mm_per_pixel = size.width / CGDisplayPixelsWide (kCGDirectMainDisplay);
UNBLOCK_INPUT;
-
- return make_number ((int) (size.width + .5f));
}
#if MAC_OS_X_VERSION_MIN_REQUIRED == 1020
else
#if MAC_OS_X_VERSION_MAX_ALLOWED < 1030 || MAC_OS_X_VERSION_MIN_REQUIRED == 1020
{
/* This is an approximation. */
- return make_number ((int) (dpyinfo->width * 25.4 / dpyinfo->resx));
+ mm_per_pixel = 25.4f / dpyinfo->resx;
}
#endif
+
+ return make_number ((int) (dpyinfo->width * mm_per_pixel + 0.5f));
}
DEFUN ("x-display-backing-store", Fx_display_backing_store,