com.sun.glass.ui.monocle.EPDPlatformFactory Maven / Gradle / Ivy
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package com.sun.glass.ui.monocle;
import com.sun.javafx.logging.PlatformLogger;
import com.sun.javafx.util.Logging;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.text.MessageFormat;
/**
* A factory object for creating the native platform on a Linux system with an
* electrophoretic display, also called an e-paper display, found on e-readers
* such as the Amazon Kindle and Rakuten Kobo.
*/
class EPDPlatformFactory extends NativePlatformFactory {
/**
* The major version number of this platform factory.
*/
private static final int MAJOR_VERSION = 1;
/**
* The minor version number of this platform factory.
*/
private static final int MINOR_VERSION = 0;
/**
* The file that contains the name of the frame buffer device when CONFIG_FB
* is defined during kernel compilation.
*/
private static final String FB_FILE = "/proc/fb";
/**
* The name of the Mobile Extreme Convergence Electrophoretic Display
* Controller Frame Buffer device.
*/
private static final String FB_NAME = "mxc_epdc_fb";
private final PlatformLogger logger = Logging.getJavaFXLogger();
/**
* Creates a new factory object for the Monocle EPD Platform.
*/
EPDPlatformFactory() {
}
@Override
protected boolean matches() {
@SuppressWarnings("removal")
String fbinfo = AccessController.doPrivileged((PrivilegedAction) () -> {
String line = null;
try (var reader = new BufferedReader(new FileReader(FB_FILE))) {
line = reader.readLine();
} catch (IOException e) {
logger.severe("Failed reading " + FB_FILE, e);
}
return line;
});
return fbinfo != null && fbinfo.contains(FB_NAME);
}
@Override
protected NativePlatform createNativePlatform() {
return new EPDPlatform();
}
@Override
protected int getMajorVersion() {
return MAJOR_VERSION;
}
@Override
protected int getMinorVersion() {
return MINOR_VERSION;
}
@Override
public String toString() {
return MessageFormat.format("{0}[majorVersion={1} minorVersion={2} matches=\"{3} in {4}\"]",
getClass().getName(), getMajorVersion(), getMinorVersion(), FB_NAME, FB_FILE);
}
}