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Support Typeface.createFromFile()

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Add support for Typeface.createFromFile() for platform fonts. The
feature existed in the KitKat LayoutLib but was dropped for the L
preview. This change adds it back.

Change-Id: Ib1abe67a32c28a1fb0e2a4f3061c358b55129434
This commit is contained in:
Deepanshu Gupta
2014-06-30 15:00:59 -07:00
parent 7ea293bc6a
commit 3c937cf5c7
2 changed files with 80 additions and 47 deletions
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88
tools/layoutlib/bridge/src/android/graphics/FontFamily_Delegate.java
View File

@@ -83,6 +83,13 @@ public class FontFamily_Delegate {
private List<String> mPath = new ArrayList<String>();
// ---- Public helper class ----
public enum FontVariant {
// The order needs to be kept in sync with android.graphics.FontFamily.
NONE, COMPACT, ELEGANT
}
// ---- Public Helper methods ----
public static FontFamily_Delegate getDelegate(long nativeFontFamily) {
@@ -124,6 +131,40 @@ public class FontFamily_Delegate {
return mVariant;
}
/*package*/ static int getFontStyle(String path) {
int style = Font.PLAIN;
String fontName = path.substring(path.lastIndexOf('/'));
if (fontName.endsWith(FONT_SUFFIX_BOLDITALIC)) {
style = Font.BOLD | Font.ITALIC;
} else if (fontName.endsWith(FONT_SUFFIX_BOLD)) {
style = Font.BOLD;
} else if (fontName.endsWith(FONT_SUFFIX_ITALIC)) {
style = Font.ITALIC;
}
return style;
}
/*package*/ static Font loadFont(String path) {
if (path.startsWith(SYSTEM_FONTS) ) {
String relativePath = path.substring(SYSTEM_FONTS.length());
File f = new File(sFontLocation, relativePath);
try {
return Font.createFont(Font.TRUETYPE_FONT, f);
} catch (Exception e) {
Bridge.getLog().fidelityWarning(LayoutLog.TAG_BROKEN,
String.format("Unable to load font %1$s", relativePath),
e /*throwable*/, null /*data*/);
}
} else {
Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED,
"Only platform fonts located in " + SYSTEM_FONTS + "can be loaded.",
null /*throwable*/, null /*data*/);
}
return null;
}
// ---- native methods ----
@@ -169,6 +210,9 @@ public class FontFamily_Delegate {
return false;
}
// ---- private helper methods ----
private void init() {
for (String path : mPath) {
addFont(path);
@@ -183,51 +227,9 @@ public class FontFamily_Delegate {
}
FontInfo fontInfo = new FontInfo();
fontInfo.mFont = font;
addFontMetadata(fontInfo, path);
fontInfo.mStyle = getFontStyle(path);
// TODO ensure that mFonts doesn't have the font with this style already.
mFonts.add(fontInfo);
return true;
}
private static void addFontMetadata(FontInfo fontInfo, String path) {
int style = Font.PLAIN;
String fontName = path.substring(path.lastIndexOf('/'), path.length());
if (fontName.endsWith(FONT_SUFFIX_BOLDITALIC)) {
style = Font.BOLD | Font.ITALIC;
} else if (fontName.endsWith(FONT_SUFFIX_BOLD)) {
style = Font.BOLD;
} else if (fontName.endsWith(FONT_SUFFIX_ITALIC)) {
style = Font.ITALIC;
}
fontInfo.mStyle = style;
}
private static Font loadFont(String path) {
if (path.startsWith(SYSTEM_FONTS) ) {
String relativePath = path.substring(SYSTEM_FONTS.length());
File f = new File(sFontLocation, relativePath);
try {
return Font.createFont(Font.TRUETYPE_FONT, f);
} catch (Exception e) {
Bridge.getLog().fidelityWarning(LayoutLog.TAG_BROKEN,
String.format("Unable to load font %1$s", relativePath),
e /*throwable*/, null /*data*/);
}
} else {
Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED,
"Only platform fonts located in " + SYSTEM_FONTS + "can be loaded.",
null /*throwable*/, null /*data*/);
}
return null;
}
// ---- Public helper class ----
public enum FontVariant {
// The order needs to be kept in sync with android.graphics.FontFamily.
NONE, COMPACT, ELEGANT
}
}

39
tools/layoutlib/bridge/src/android/graphics/Typeface_Delegate.java
View File

@@ -16,6 +16,8 @@
package android.graphics;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.ide.common.rendering.api.LayoutLog;
import com.android.layoutlib.bridge.Bridge;
import com.android.layoutlib.bridge.impl.DelegateManager;
@@ -27,6 +29,7 @@ import android.graphics.FontFamily_Delegate.FontVariant;
import java.awt.Font;
import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
@@ -55,8 +58,12 @@ public final class Typeface_Delegate {
// ---- delegate data ----
@Nullable
private final FontFamily_Delegate[] mFontFamilies; // the reference to FontFamily_Delegate.
private int mStyle;
@Nullable
private final Font mFont;
/** @see FontFamily_Delegate.FontInfo#mStyle */
private final int mStyle;
private static long sDefaultTypeface;
@@ -77,8 +84,14 @@ public final class Typeface_Delegate {
* @param variant The variant preferred. Can only be {@link FontVariant#COMPACT} or
* {@link FontVariant#ELEGANT}
*/
@NonNull
public List<Font> getFonts(FontVariant variant) {
assert variant != FontVariant.NONE;
if (mFontFamilies == null) {
// We don't care about the variant here, since the Typeface was created with a single
// Font File. So, we simply return that Font.
return getFontAsList();
}
List<Font> fonts = new ArrayList<Font>(mFontFamilies.length);
for (int i = 0; i < mFontFamilies.length; i++) {
FontFamily_Delegate ffd = mFontFamilies[i];
@@ -144,9 +157,13 @@ public final class Typeface_Delegate {
@LayoutlibDelegate
/*package*/ static synchronized long nativeCreateFromFile(String path) {
Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED,
"Typeface.createFromFile() is not supported.,", null, null);
return 0;
if (!path.startsWith(SYSTEM_FONTS)) {
Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED,
"Typeface.createFromFile() can only work with platform fonts located in " +
SYSTEM_FONTS, null, null);
return 0;
}
return sManager.addNewDelegate(new Typeface_Delegate(path));
}
@LayoutlibDelegate
@@ -188,6 +205,20 @@ public final class Typeface_Delegate {
private Typeface_Delegate(FontFamily_Delegate[] fontFamilies, int style) {
mFontFamilies = fontFamilies;
mFont = null;
mStyle = style;
}
private Typeface_Delegate(String path) {
mFont = FontFamily_Delegate.loadFont(path);
mFontFamilies = null;
mStyle = FontFamily_Delegate.getFontStyle(path);
}
private List<Font> getFontAsList() {
if (mFont != null) {
return Collections.singletonList(mFont);
}
return Collections.emptyList();
}
}