Java Code Examples for java.awt.Font#canDisplay()

@Override
public void setAdvanceValues(Font font) {
    List<RECT> newFontBoundsTable = new ArrayList<>();
    List<Integer> newFontAdvanceTable = new ArrayList<>();
    for (int i = 0; i < codeTable.size(); i++) {
        Integer character = codeTable.get(i);
        char ch = (char) (int) character;
        if (!font.canDisplay(ch) && fontFlagsHasLayout) { //cannot display, leave old if exist
            newFontAdvanceTable.add(fontAdvanceTable.get(i));
            newFontBoundsTable.add(fontBoundsTable.get(i));
            continue;
        }
        SHAPE shp = SHAPERECORD.fontCharacterToSHAPE(font, (int) Math.round(getDivider() * 1024), ch);
        newFontBoundsTable.add(shp.getBounds());
        int fontStyle = getFontStyle();
        Font advanceFont = font.deriveFont(fontStyle, 1024); // Not multiplied with divider as it causes problems to create font with height around 20k
        newFontAdvanceTable.add((int) getDivider() * Math.round(FontHelper.getFontAdvance(advanceFont, ch)));
    }
    fontAdvanceTable = newFontAdvanceTable;
    fontBoundsTable = newFontBoundsTable;
    fontKerningTable = new ArrayList<>();
    fontFlagsHasLayout = true;
}
 

public void runTest(Object ctx, int numReps) {
    Font font = ((TextContext)ctx).font;
    boolean b = false;
    do {
        for (int i = 0; i < 0x10000; i += 0x64) {
            b ^= font.canDisplay((char)i);
        }
    } while (--numReps >= 0);
}
 

@Override
public boolean 有這个字型無(int 控制碼, int 字體編號)
{
	if (字體編號 == 0)
	{
		for (Font 字體 : 字體集)
		{
			if (字體.canDisplay(控制碼))
			{
				return true;
			}
		}
	}
	return false;
}
 

public void runTest(Object ctx, int numReps) {
    Font font = ((TextContext)ctx).font;
    boolean b = false;
    do {
        for (int i = 0; i < 0x10000; i += 0x64) {
            b ^= font.canDisplay((char)i);
        }
    } while (--numReps >= 0);
}
 

protected boolean canDisplayRange(Font font, int rangeStart, int rangeEnd) {
    for (int i = rangeStart; i < rangeEnd; i++) {
        if (font.canDisplay(i)) {
            return true;
        }
    }
    return false;
}
 

protected boolean canDisplayRange(Font font, int rangeStart, int rangeEnd) {
    for (int i = rangeStart; i < rangeEnd; i++) {
        if (font.canDisplay(i)) {
            return true;
        }
    }
    return false;
}
 

public void runTest(Object ctx, int numReps) {
    Font font = ((TextContext)ctx).font;
    boolean b = false;
    do {
        for (int i = 0; i < 0x10000; i += 0x64) {
            b ^= font.canDisplay((char)i);
        }
    } while (--numReps >= 0);
}
 

protected boolean canDisplayRange(Font font, int rangeStart, int rangeEnd) {
    for (int i = rangeStart; i < rangeEnd; i++) {
        if (font.canDisplay(i)) {
            return true;
        }
    }
    return false;
}
 

private void updateCheckboxes() {
    Font f = getSelectedFont().deriveFont(12f);
    int rc = CharacterRanges.rangeCount();

    Set<Integer> allChars = new HashSet<>();
    for (int i = 0; i < rc; i++) {
        rangeNames[i] = CharacterRanges.rangeName(i);
        int[] codes = CharacterRanges.rangeCodes(i);
        int avail = 0;
        StringBuilder sample = new StringBuilder();
        for (int c = 0; c < codes.length; c++) {
            if (f.canDisplay(codes[c])) {
                allChars.add(codes[c]);
                if (avail < SAMPLE_MAX_LENGTH) {
                    sample.append((char) codes[c]);
                }
                avail++;
            }
        }
        rangeSamples[i].setText(sample.toString());
        rangeSamples[i].setFont(f);
        rangeCheckboxes[i].setText(translate("range.description").replace("%available%", Integer.toString(avail)).replace("%name%", rangeNames[i]).replace("%total%", Integer.toString(codes.length)));
    }
    allCheckbox.setText(translate("allcharacters").replace("%available%", Integer.toString(allChars.size())));
    individialSample.setFont(f);
    updateIndividual();
}
 

public void runTest(Object ctx, int numReps) {
    Font font = ((TextContext)ctx).font;
    boolean b = false;
    do {
        for (int i = 0; i < 0x10000; i += 0x64) {
            b ^= font.canDisplay((char)i);
        }
    } while (--numReps >= 0);
}
 

public void runTest(Object ctx, int numReps) {
    Font font = ((TextContext)ctx).font;
    boolean b = false;
    do {
        for (int i = 0; i < 0x10000; i += 0x64) {
            b ^= font.canDisplay((char)i);
        }
    } while (--numReps >= 0);
}
 

public void runTest(Object ctx, int numReps) {
    Font font = ((TextContext)ctx).font;
    boolean b = false;
    do {
        for (int i = 0; i < 0x10000; i += 0x64) {
            b ^= font.canDisplay((char)i);
        }
    } while (--numReps >= 0);
}
 

protected boolean canDisplayRange(Font font, int rangeStart, int rangeEnd) {
    for (int i = rangeStart; i < rangeEnd; i++) {
        if (font.canDisplay(i)) {
            return true;
        }
    }
    return false;
}
 

protected boolean canDisplayRange(Font font, int rangeStart, int rangeEnd) {
    for (int i = rangeStart; i < rangeEnd; i++) {
        if (font.canDisplay(i)) {
            return true;
        }
    }
    return false;
}
 

protected boolean canDisplayRange(Font font, int rangeStart, int rangeEnd) {
    for (int i = rangeStart; i < rangeEnd; i++) {
        if (font.canDisplay(i)) {
            return true;
        }
    }
    return false;
}
 

protected boolean canDisplayRange(Font font, int rangeStart, int rangeEnd) {
    for (int i = rangeStart; i < rangeEnd; i++) {
        if (font.canDisplay(i)) {
            return true;
        }
    }
    return false;
}
 

public void runTest(Object ctx, int numReps) {
    Font font = ((TextContext)ctx).font;
    boolean b = false;
    do {
        for (int i = 0; i < 0x10000; i += 0x64) {
            b ^= font.canDisplay((char)i);
        }
    } while (--numReps >= 0);
}
 

public static void main(String[] args) throws Exception {

        BufferedImage bi = new BufferedImage(1,1,1);
        Graphics2D g2d = bi.createGraphics();
        Font font = new Font(Font.DIALOG, Font.PLAIN, 12);
        if (!font.canDisplay(' ')) {
            return;
        }
        g2d.setFont(font);
        FontMetrics fm = g2d.getFontMetrics();
        if (fm.charWidth(' ') == 0) {
            throw new RuntimeException("Space has char width of 0");
        }
    }
 

/**
 * Makes the given String displayble. Probably there doesn't exists
 * perfect solution for all situation. (someone prefer display those
 * squares for undisplayable chars, someone unicode placeholders). So lets
 * try do the best compromise.
 */
private static String makeDisplayble(String str, Font f) {
    if (null == str) {
        return str;
    }

    if (null == f) {
        f = new JLabel().getFont();
    }

    StringBuffer buf = new StringBuffer((int) (str.length() * 1.3)); // x -> \u1234
    char[] chars = str.toCharArray();

    for (int i = 0; i < chars.length; i++) {
        char c = chars[i];

        switch (c) {
        case '\t':
            buf.append("&nbsp;&nbsp;&nbsp;&nbsp;" + // NOI18N
                "&nbsp;&nbsp;&nbsp;&nbsp;"
            ); // NOI18N
            break;

        case '\n':
            break;

        case '\r':
            break;

        case '\b':
            buf.append("\\b");

            break; // NOI18N

        case '\f':
            buf.append("\\f");

            break; // NOI18N

        default:

            if (!processHtmlEntity(buf, c)) {
                if ((null == f) || f.canDisplay(c)) {
                    buf.append(c);
                } else {
                    buf.append("\\u"); // NOI18N

                    String hex = Integer.toHexString(c);

                    for (int j = 0; j < (4 - hex.length()); j++)
                        buf.append('0');

                    buf.append(hex);
                }
            }
        }
    }

    return buf.toString();
}
 

/**
 * Makes the given String displayble. Probably there doesn't exists
 * perfect solution for all situation. (someone prefer display those
 * squares for undisplayable chars, someone unicode placeholders). So lets
 * try do the best compromise.
 */
private static String makeDisplayble(String str, Font f) {
    if (null == str) {
        return str;
    }

    if (null == f) {
        f = new JLabel().getFont();
    }

    StringBuffer buf = new StringBuffer(str.length() * 6); // x -> \u1234
    char[] chars = str.toCharArray();

    for (int i = 0; i < chars.length; i++) {
        char c = chars[i];

        switch (c) {
        // label doesn't interpret tab correctly
        case '\t':
            buf.append("        "); // NOI18N
            break;

        case '\n':
            break;

        case '\r':
            break;

        case '\b':
            buf.append("\\b");

            break; // NOI18N

        case '\f':
            buf.append("\\f");

            break; // NOI18N

        default:

            if ((null == f) || f.canDisplay(c)) {
                buf.append(c);
            } else {
                buf.append("\\u"); // NOI18N

                String hex = Integer.toHexString(c);

                for (int j = 0; j < (4 - hex.length()); j++)
                    buf.append('0');

                buf.append(hex);
            }
        }
    }

    return buf.toString();
}