Examples with TextHitInfo java.awt.font.TextHitInfo used on opensource projects

Example 1 with TextHitInfo

use of java.awt.font.TextHitInfo in project hid-serial by rayshobby.

the class GTextArea method moveCaretUp.

protected boolean moveCaretUp(TextLayoutHitInfo currPos) {
    if (currPos.tli.lineNo == 0)
        return false;
    TextLayoutInfo ntli = stext.getTLIforLineNo(currPos.tli.lineNo - 1);
    TextHitInfo nthi = ntli.layout.hitTestChar(caretX, 0);
    currPos.tli = ntli;
    currPos.thi = nthi;
    return true;
}

Example 2 with TextHitInfo

use of java.awt.font.TextHitInfo in project hid-serial by rayshobby.

the class GTextArea method moveCaretLeft.

/**
	 * Move caret left by one character. If necessary move to the end of the line above
	 * @return true if caret was moved else false
	 */
protected boolean moveCaretLeft(TextLayoutHitInfo currPos) {
    TextLayoutInfo ntli;
    TextHitInfo nthi = currPos.tli.layout.getNextLeftHit(currPos.thi);
    if (nthi == null) {
        // Move the caret to the end of the previous line 
        if (currPos.tli.lineNo == 0)
            // Can't goto previous line because this is the first line
            return false;
        else {
            // Move to end of previous line
            ntli = stext.getTLIforLineNo(currPos.tli.lineNo - 1);
            nthi = ntli.layout.getNextRightHit(ntli.nbrChars - 1);
            currPos.tli = ntli;
            currPos.thi = nthi;
        }
    } else {
        // Move the caret to the left of current position
        currPos.thi = nthi;
    }
    return true;
}

Example 3 with TextHitInfo

use of java.awt.font.TextHitInfo in project hid-serial by rayshobby.

the class GEditableTextControl method changeText.

// Only executed if text has changed
protected void changeText() {
    TextLayoutInfo tli;
    TextHitInfo thi = null, thiRight = null;
    pos += adjust;
    // Force layouts to be updated
    stext.getLines(buffer.g2);
    // Try to get text layout info for the current position
    tli = stext.getTLIforCharNo(pos);
    if (tli == null) {
        // If unable to get a layout for pos then reset everything
        endTLHI = null;
        startTLHI = null;
        ptx = pty = 0;
        caretX = caretY = 0;
    } else {
        int posInLine = pos - tli.startCharIndex;
        // Get some hit info so we can see what is happening
        try {
            thiRight = tli.layout.getNextRightHit(posInLine);
        } catch (Exception excp) {
            thiRight = null;
        }
        if (posInLine <= 0) {
            // At start of line
            thi = tli.layout.getNextLeftHit(thiRight);
        } else if (posInLine >= tli.nbrChars) {
            // End of line
            thi = tli.layout.getNextRightHit(tli.nbrChars - 1);
        } else {
            // Character in line;
            thi = tli.layout.getNextLeftHit(thiRight);
        }
        endTLHI.setInfo(tli, thi);
        // Cursor at end of paragraph graphic
        calculateCaretPos(endTLHI);
        // Is do we have to move cursor to start of next line
        if (newline) {
            ///stext.getWrapWidth() != Integer.MAX_VALUE && caretX > stext.getWrapWidth()){
            if (pos >= stext.length()) {
                stext.insertCharacters(pos, " ");
                stext.getLines(buffer.g2);
            }
            moveCaretRight(endTLHI);
            calculateCaretPos(endTLHI);
        }
        // Finish off by ensuring no selection, invalidate buffer etc.
        startTLHI.copyFrom(endTLHI);
    }
    bufferInvalid = true;
}

Example 4 with TextHitInfo

use of java.awt.font.TextHitInfo in project binnavi by google.

the class ZyCaret method calcHitPosition.

private int calcHitPosition(final int caretPosition, final double x, final double y, final double zoomFactor) {
    boolean switched = false;
    int lp = m_mouse_pressed_y;
    int lr = m_mouse_released_y;
    if (lp > lr) {
        lp = m_mouse_released_y;
        lr = m_mouse_pressed_y;
        switched = true;
    }
    final int linecount = m_content.getLineCount();
    final double height = (float) m_content.getLineHeight();
    int maxIndex = caretPosition;
    for (int line = lp; line <= lr; line++) {
        double deltaY = 0;
        if (switched) {
            deltaY = height * zoomFactor * line;
        } else {
            deltaY = -(height * zoomFactor * (linecount - line));
        }
        final TextLayout textLayout = m_content.getLineContent(line).getTextLayout();
        final TextHitInfo hitInfo = textLayout.hitTestChar((float) x, (float) (y + deltaY), textLayout.getBounds());
        final int insertionIndex = hitInfo.getInsertionIndex();
        if ((caretPosition < insertionIndex) && (insertionIndex > maxIndex)) {
            maxIndex = insertionIndex;
        }
    }
    return maxIndex;
}

Example 5 with TextHitInfo

use of java.awt.font.TextHitInfo in project jdk8u_jdk by JetBrains.

the class JTextComponent method setInputMethodCaretPosition.

//
// Sets the caret position according to the passed input method
// event. Also, sets/resets composed text caret appropriately.
//
private void setInputMethodCaretPosition(InputMethodEvent e) {
    int dot;
    if (composedTextExists()) {
        dot = composedTextStart.getOffset();
        if (!(caret instanceof ComposedTextCaret)) {
            if (composedTextCaret == null) {
                composedTextCaret = new ComposedTextCaret();
            }
            originalCaret = caret;
            // Sets composed text caret
            exchangeCaret(originalCaret, composedTextCaret);
        }
        TextHitInfo caretPos = e.getCaret();
        if (caretPos != null) {
            int index = caretPos.getInsertionIndex();
            dot += index;
            if (index == 0) {
                // becomes visible.
                try {
                    Rectangle d = modelToView(dot);
                    Rectangle end = modelToView(composedTextEnd.getOffset());
                    Rectangle b = getBounds();
                    d.x += Math.min(end.x - d.x, b.width);
                    scrollRectToVisible(d);
                } catch (BadLocationException ble) {
                }
            }
        }
        caret.setDot(dot);
    } else if (caret instanceof ComposedTextCaret) {
        dot = caret.getDot();
        // Restores original caret
        exchangeCaret(caret, originalCaret);
        caret.setDot(dot);
    }
}