BBjSystemMetrics::getDevicePixelRatio

Description

In BBj 15.0 and higher, this BBjSystemMetrics method returns the ratio of physical to logical pixels on the client screen device. High-DPI ("retina") displays report values greater than 1 (typically 2).

Syntax

Return Value	Method
BBjNumber	getDevicePixelRatio()
BBjNumber	getDevicePixelRatio(int `screen`)

Parameters

Variable	Description
screen	Specifies the screen number. Must be >= 0 and < BBjSystemMetrics::getScreenCount.

Return Value

Returns the ratio of physical to logical pixels on the client screen device.

Remarks

In BUI, this method corresponds to the browser's window.devicePixelRatio value.

Example

rem ' BBjSystemMetrics::getDevicePixelRatio

sysgui = unt
open (sysgui)"X0"
sysgui! = bbjapi().getSysGui()
metrics! = sysgui!.getSystemMetrics()
print "Default:"
print "getScreenResolution:",metrics!.getScreenResolution()," DPI"
print "getDevicePixelRatio:",metrics!.getDevicePixelRatio()
print "getScreenSize: ",metrics!.getScreenSize()
print "getScreenBounds: ",metrics!.getScreenBounds()
print "getScreenInsets: ",metrics!.getScreenInsets()
screens = metrics!.getScreenCount()
for screen = 0 to screens-1
    print ""
    print "Screen",screen,":"
    print "getDevicePixelRatio",screen,":",metrics!.getDevicePixelRatio(screen)
    print "getScreenSize",screen,":",metrics!.getScreenSize(screen)
    print "getScreenBounds",screen,":",metrics!.getScreenBounds(screen)
    print "getScreenInsets",screen,":",metrics!.getScreenInsets(screen)
next screen