package jalview.bin;
-import java.awt.Toolkit;
+import java.awt.HeadlessException;
public class HiDPISetting
{
- public static final int dpi;
+ private static final int hidpiThreshold = 160;
- public static final int scale;
+ private static final int hidpiMultiThreshold = 240;
- private static final int hidpi = 110;
+ private static final int bigScreenThreshold = 1400;
- private static final String scaleProperty = "sun.java2d.uiScale";
+ public static final String scalePropertyName = "sun.java2d.uiScale";
- private static final boolean isAMac = System.getProperty("os.name")
- .indexOf("Mac") > -1;
+ private static final boolean isLinux;
- private static final boolean isLinux = System.getProperty("os.name")
- .toLowerCase().indexOf("linux") > -1;
+ // private static final boolean isAMac;
- private static final boolean isWindows = System.getProperty("os.name")
- .toLowerCase().indexOf("windows") > -1;
+ // private static final boolean isWindows;
+
+ public static final String setHiDPIPropertyName = "setHiDPI";
+
+ public static final String setHiDPIScalePropertyName = "setHiDPIScale";
+
+ private static boolean setHiDPI = false;
+
+ private static int setHiDPIScale = 0;
+
+ public static int dpi = 0;
+
+ public static int mindimension = 0;
+
+ public static int width = 0;
+
+ public static int scale = 0;
+
+ private static boolean doneInit = false;
+
+ private static boolean allowScalePropertyArg = false;
+
+ private static ScreenInfo screenInfo = new ScreenInfo();
static
{
- dpi = Toolkit.getDefaultToolkit().getScreenResolution();
- scale = dpi / hidpi + 1;
- if (scale > 1 && isLinux)
+ String system = System.getProperty("os.name") == null ? null
+ : System.getProperty("os.name").toLowerCase();
+ if (system != null)
+ {
+ isLinux = system.indexOf("linux") > -1;
+ // isAMac = system.indexOf("mac") > -1;
+ // isWindows = system.indexOf("windows") > -1;
+ }
+ else
{
- System.out.println("DPI detected as " + dpi
- + ". Scaling factor set to " + scale + ".");
+ isLinux = false;
+ // isAMac = isWindows = false;
}
}
- public static String getScalePropertyArg()
+ private static void init()
{
- // HiDPI setting. Just looking at Linux to start with. Test with Windows.
- if (!isLinux)
+ if (doneInit)
{
- return null;
+ return;
}
- if (scale > 1)
+
+ // get and use command line property values first
+ String setHiDPIProperty = System.getProperty(setHiDPIPropertyName);
+ setHiDPI = setHiDPIProperty != null
+ && setHiDPIProperty.equalsIgnoreCase("true");
+
+ String setHiDPIScaleProperty = System
+ .getProperty(setHiDPIScalePropertyName);
+ if (setHiDPIScaleProperty != null)
+ {
+ try
+ {
+ setHiDPIScale = Integer.parseInt(setHiDPIScaleProperty);
+ } catch (NumberFormatException e)
+ {
+ System.err.println(setHiDPIScalePropertyName + " property give ("
+ + setHiDPIScaleProperty + ") but not parseable as integer");
+ }
+ }
+ if (setHiDPI && setHiDPIScale > 0)
+ {
+ setHiDPIScale(setHiDPIScale);
+ return;
+ }
+
+ // check to see if the scale property has already been set by something else
+ // (e.g. the OS)
+ String existingProperty = System.getProperty(scalePropertyName);
+ if (existingProperty != null)
+ {
+ try
+ {
+ int existingPropertyVal = Integer.parseInt(existingProperty);
+ System.out.println("Existing " + scalePropertyName + " is "
+ + existingPropertyVal);
+ if (existingPropertyVal > 1)
+ {
+ setHiDPIScale(existingPropertyVal);
+ return;
+ }
+ } catch (NumberFormatException e)
+ {
+ System.out.println("Could not convert property " + scalePropertyName
+ + " vale '" + existingProperty + "' to number");
+ }
+ }
+
+ // Try and auto guess a good scale based on reported DPI (not trustworthy)
+ // and screen resolution (more trustworthy)
+
+ // get screen dpi
+ screenInfo = getScreenInfo();
+ try
+ {
+ dpi = screenInfo.getScreenResolution();
+ } catch (HeadlessException e)
+ {
+ System.err.println("Cannot get screen resolution: " + e.getMessage());
+ }
+
+ // try and get screen size height and width
+ try
+ {
+ int height = screenInfo.getScreenHeight();
+ int width = screenInfo.getScreenWidth();
+ // using mindimension in case of portrait screens
+ mindimension = Math.min(height, width);
+ } catch (HeadlessException e)
+ {
+ System.err.println(
+ "Cannot get screen size height and width:" + e.getMessage());
+ }
+
+ // attempt at a formula for scaling based on screen dpi and mindimension.
+ // scale will be an integer >=1. This formula is based on some testing and
+ // guesswork!
+
+ // scale based on reported dpi. if dpi>hidpiThreshold then scale=2+multiples
+ // of hidpiMultiThreshold (else scale=1)
+ // (e.g. dpi of 110 scales 1. dpi of 120 scales 2. dpi of 360 scales 3)
+ int dpiScale = (dpi - hidpiThreshold > 0)
+ ? 2 + ((dpi - hidpiThreshold) / hidpiMultiThreshold)
+ : 1;
+
+ int dimensionScale = 1 + (mindimension / bigScreenThreshold);
+
+ // choose larger of dimensionScale or dpiScale (most likely dimensionScale
+ // as dpiScale often misreported)
+ int autoScale = Math.max(dpiScale, dimensionScale);
+
+ // only make an automatic change if scale is changed and other conditions
+ // (OS is linux) apply, or if setHiDPI has been specified
+ if ((autoScale > 1 && isLinux) || setHiDPI)
+ {
+ setHiDPIScale(autoScale);
+ return;
+ }
+
+ // looks like we're not doing any scaling
+ doneInit = true;
+ }
+
+ public static void setHiDPIScale(int s)
+ {
+ scale = s;
+ allowScalePropertyArg = true;
+ doneInit = true;
+ }
+
+ public static String getScalePropertyArg(int s)
+ {
+ return "-D" + scalePropertyName + "=" + String.valueOf(s);
+ }
+
+ public static String getScalePropertyArg()
+ {
+ init();
+ // HiDPI setting. Just looking at Linux to start with. Test with Windows.
+ return allowScalePropertyArg ? getScalePropertyArg(scale) : null;
+ }
+
+ public static void clear()
+ {
+ setHiDPI = false;
+ setHiDPIScale = 0;
+ dpi = 0;
+ mindimension = 0;
+ width = 0;
+ scale = 0;
+ doneInit = false;
+ allowScalePropertyArg = false;
+ }
+
+ public static void setScreenInfo(ScreenInfo si)
+ {
+ screenInfo = si;
+ }
+
+ public static ScreenInfo getScreenInfo()
+ {
+ if (screenInfo == null)
{
- return "-D" + scaleProperty + "=" + scale;
+ screenInfo = new ScreenInfo();
}
- return null;
+ return screenInfo;
}
}
git://source.jalview.org / jalview.git / blobdiff