blob: 09064ee16801e9c31d57e8f514d05563909ee28e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
package com.mapbox.mapboxsdk.utils;
import android.graphics.Typeface;
import com.mapbox.mapboxsdk.MapStrictMode;
import com.mapbox.mapboxsdk.log.Logger;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import static com.mapbox.mapboxsdk.constants.MapboxConstants.DEFAULT_FONT;
/**
* Utility class to select a font from a range of font names based on the availability of fonts on the device.
*/
public class FontUtils {
private static final String TAG = "Mbgl-FontUtils";
private FontUtils() {
// no instance
}
/**
* Select a font from a range of font names to match the availability of fonts on the device.
*
* @param fontNames the range of font names to select from
* @return the selected fon
*/
public static String extractValidFont(String... fontNames) {
if (fontNames == null) {
return null;
}
List<String> validFonts = getAvailableFonts();
for (String fontName : fontNames) {
if (validFonts.contains(fontName)) {
return fontName;
}
}
Logger.i(TAG, String.format(
"Couldn't map font family for local ideograph, using %s instead", DEFAULT_FONT)
);
return DEFAULT_FONT;
}
private static List<String> getAvailableFonts() {
List<String> fonts = new ArrayList<>();
try {
Typeface typeface = Typeface.create(Typeface.DEFAULT, Typeface.NORMAL);
Field f = Typeface.class.getDeclaredField("sSystemFontMap");
f.setAccessible(true);
Map<String, Typeface> fontMap = (Map<String, Typeface>) f.get(typeface);
fonts.addAll(fontMap.keySet());
} catch (Exception exception) {
Logger.e(TAG,"Couldn't load fonts from Typeface", exception);
MapStrictMode.strictModeViolation("Couldn't load fonts from Typeface", exception);
}
return fonts;
}
}
|
