sdabaseedit.java

很好的UI界面源码..还有自己的输入法,可以更换风格.可以学习和使用

                    fillRect(g, thisWidth - barwidth, barwidth + ppos, barwidth, pheight);
                    g.setColor(getBorderColor());
                    drawRect(g, thisWidth - barwidth, barwidth + ppos, barwidth, pheight);
                    //记录大小
                    VSLeft = thisWidth - barwidth;
                    VSTop = barwidth + ppos;
                    VSWidth = barwidth;
                    VSHeight = pheight;
                    //画块上的线
                    int tpos = VSHeight / 2 + VSTop;
                    drawRect(g, VSLeft + 2, tpos, barwidth - 4, 0);
                    if (tpos - 2 > VSTop) {
                        drawRect(g, VSLeft + 2, tpos - 2, VSWidth - 4, 0);
                    }
                    if (tpos + 2 < VSTop + VSHeight) {
                        drawRect(g, VSLeft + 2, tpos + 2, VSWidth - 4, 0);
                    }
                    //三角
                    g.setColor(getBorderColor());
                    fillTriangle(g, thisWidth - barwidth + barwidth / 2, barwidth / 2 - 2,
                            thisWidth - barwidth + barwidth / 2 - 4, barwidth / 2 + 2,
                            thisWidth - barwidth + barwidth / 2 + 4, barwidth / 2 + 2);
                    fillTriangle(g, thisWidth - barwidth + barwidth / 2 - 4, VBarHeight - barwidth + barwidth / 2 - 2,
                            thisWidth - barwidth + barwidth / 2 + 4, VBarHeight - barwidth + barwidth / 2 - 2,
                            thisWidth - barwidth + barwidth / 2, VBarHeight - barwidth / 2 + 2);
                }
            }
            PaintChilds();
        }
    }
    //获取最大可视行
    private int getMaxVisibleLineNum() {
        return getVBarHeight() / getFont().getHeight();
    }
    //对单行处理
    private void paintWordWrap(Graphics g, String str, int left) {
        int strLength = str.length();
        int currentWidth = 0;
        int startPoint = 0;
        int id = 0;
        Font ft = getFont();
        for (int i = 0; i < strLength; i++) {
            currentWidth += ft.charWidth(str.charAt(i));
            id++;
            if (currentWidth > maxLineLenght) {
                //如果cursorCol在最后，应该换行
                if (cursorCol > 0 && cursorCol == id && lineNo == cursorRow) {
                    cursorCol = 1;
                    cursorRow++;
                }
                //返回一个字符
                i--;
                id = 0;
                String subStr = str.substring(startPoint, i + 1);
                drawString(g, subStr, left, (lineNo - startLine) * getFont().getHeight());
                if (lineNo < cursorRow) {
                    cursorLineStartPos += subStr.length();
                    priorLineLen = subStr.length();
                }
                if (lineNo == cursorRow) {
                    paintCursor(g, 0, subStr);
                }
                startPoint = i + 1;
                currentWidth = 0;
                lineNo++;
            }
        }
        String subStr = str.substring(startPoint, strLength);
        drawString(g, subStr, left, (lineNo - startLine) * getFont().getHeight());
        if (lineNo < cursorRow) {
            if (cursorRow < lineNum) {
                cursorLineStartPos += subStr.length() + 1;
            }
            priorLineLen = subStr.length();
        }
        if (lineNo == cursorRow) {
            paintCursor(g, 0, subStr);
        }
        lineNo++;
    }
    //按指定字符转换
    private String getPassString(String str, char ch) {
        String rstr = "";
        for (int i = 0; i < str.length(); i++) {
            rstr += ch;
        }
        return rstr;
    }
    //画光标
    private void paintCursor(Graphics g, int left, String lineText) {
        if (isFoucsed()) {
            cursorLineText = lineText;
            int curLeft = 0;
            if (lineText.length() > cursorCol) {
                curLeft = getFont().stringWidth(lineText.substring(0, cursorCol));
            } else {
                curLeft = getFont().stringWidth(lineText);
                cursorCol = lineText.length();
            }
            g.setColor(foreColor);
            if (isMultiLine()) {
                drawLine(g, 2 + curLeft - startLeft, getFont().getHeight() * (cursorRow - startLine),
                        2 + curLeft - startLeft, getFont().getHeight() * (cursorRow - startLine + 1));
            } else {
                drawLine(g, curLeft - startLeft + left, 0, curLeft - startLeft + left, getFont().getHeight());
            }
        }
    }

    //获取换行
    private int getChangeLinePos(String text) {
        int intNpos = text.indexOf('\n');
        int intRpos = text.indexOf('\r');
        int pos = -1;
        if (intNpos > -1 && intRpos > -1) {
            if (intNpos > intRpos) {
                pos = intRpos;
            } else {
                pos = intNpos;
            }
        } else {
            if (intNpos > -1) {
                pos = intNpos;
            }
            if (intRpos > -1) {
                pos = intRpos;
            }
        }
        return pos;
    }
    //打字
    private void paintString(Graphics g, String text, int left, int top) {
        int fontHeight = getFont().getHeight();
        g.setColor(getForeColor());
        if (!isMultiLine()) {
            SetClip(g, 2, 2, width - 4, height - 4);
        } else {
            if (scrollBars == SDAConsts.srHorizontal) {
                SetClip(g, 2, 2, width - 4, height - 4 - barwidth);
            }
            if (scrollBars == SDAConsts.srVertical) {
                SetClip(g, 2, 2, width - 4 - barwidth, height - 4);
            }
            if (scrollBars == SDAConsts.srBoth) {
                SetClip(g, 2, 2, width - 4 - barwidth, height - 4 - barwidth);
            }
        }
        if ((scrollBars == SDAConsts.srVertical) || (scrollBars == SDAConsts.srBoth)) {
            maxLineLenght = width - barwidth;
        } else {
            maxLineLenght = width;
        }
        cursorLineStartPos = 0;
        lineNo = 0;
        if (!isMultiLine()) {
            //判断密码字符
            String str = (passwordChar == 0) ? text : (getPassString(text, passwordChar));
            if (textAlign == SDAConsts.alignLeft) {
                drawString(g, str, left - startLeft, top);
            } else {
                drawString(g, str, left, top);
            }
            paintCursor(g, left, str);
        } else {
            //如果是空的
            if (text.length() == 0) {
                paintCursor(g, 0, text);
            }
            //多行的
            if (isWordWrap()) {
                //长行自动分行，分行符自动到一行
                String str = "";
                int pos = 0;
                while (getChangeLinePos(text) > -1) {
                    pos = getChangeLinePos(text);
                    str = text.substring(0, pos);
                    String str1 = (passwordChar == 0) ? str : (getPassString(str, passwordChar));
                    paintWordWrap(g, str1, left);
                    text = text.substring(pos + 1);
                }
                String str1 = (passwordChar == 0) ? text : (getPassString(text, passwordChar));
                paintWordWrap(g, str1, left);
                lineNum = lineNo;
            } else {
                //不自动换行（根据"\n"换行）
                String str = "";
                lineNo = 0;
                maxLineLenght = 0;
                int pos = 0;
                if (isMultiLine()) {
                    while (getChangeLinePos(text) > -1) {
                        pos = getChangeLinePos(text);
                        str = text.substring(0, pos);
                        String str1 = (passwordChar == 0) ? str : (getPassString(str, passwordChar));
                        if (maxLineLenght < getFont().stringWidth(str1)) {
                            maxLineLenght = getFont().stringWidth(str1);
                        }
                        if (lineNo < cursorRow) {
                            cursorLineStartPos += str1.length() + 1;
                        }
                        if (lineNo == cursorRow) {
                            paintCursor(g, 0, str1);
                        }
                        drawString(g, str1, left - startLeft, top + fontHeight * (lineNo - startLine));
                        text = text.substring(pos + 1);
                        lineNo += 1;
                    }
                }
                if (text.length() > 0) {
                    String str1 = (passwordChar == 0) ? text : (getPassString(text, passwordChar));
                    drawString(g, str1, left - startLeft, top + fontHeight * (lineNo - startLine));
                    if (lineNo < cursorRow) {
                        cursorLineStartPos += str1.length() + 1;
                    }
                    if (lineNo == cursorRow) {
                        paintCursor(g, 0, str1);
                    }
                    lineNo += 1;
                    if (maxLineLenght < getFont().stringWidth(str1)) {
                        maxLineLenght = getFont().stringWidth(str1);
                    }
                }
                lineNum = lineNo;
                maxLineLenght += fontHeight / 2;
            }
        }
        lineNum = lineNo;
    }

    public int getHeight() {
        return internalGetHeight();
    }

    private int internalGetHeight() {
        if (!isMultiLine()) {
            return super.getFont().getHeight() + 3;
        } else {
            return super.getHeight();
        }
    }

    public void setHeight(int height) {
        internalSetHeight(height);
    }

    private void internalSetHeight(int height) {
        //对于单行不起作用
        if (isMultiLine()) {
            super.setHeight(height);
        } else {
            super.setHeight(getFont().getHeight() + 3);
        }
        internalPaint();
    }

    public int getBorderStyle() {
        return borderStyle;
    }

    public void setBorderStyle(int borderStyle) {
        this.borderStyle = borderStyle;
        internalPaint();
    }

    public boolean isHideSelection() {
        return hideSelection;
    }

    public void setHideSelection(boolean hideSelection) {
        this.hideSelection = hideSelection;
        internalPaint();
    }

    public int getMaxLength() {
        return maxLength;
    }

    public void setMaxLength(int maxLength) {
        this.maxLength = maxLength;
        //内容处理
        setText(getText());
        doTextChange();
        internalPaint();
    }

    public boolean isMultiLine() {
        return multiLine;
    }

    public void setMultiLine(boolean multiLine) {
        this.multiLine = multiLine;
        internalPaint();
    }

    public char getPasswordChar() {
        return passwordChar;
    }

    public void setPasswordChar(char passwordChar) {
        this.passwordChar = passwordChar;
        repaintControl();
    }

    public boolean isReadOnly() {
        return readOnly;
    }

    public void setReadOnly(boolean readOnly) {
        this.readOnly = readOnly;
    }

    public int getScrollBars() {
        return scrollBars;
    }

    public void setScrollBars(int scrollBars) {
        this.scrollBars = scrollBars;
        repaintControl();
    }

    public int getTextAlign() {
        return textAlign;
    }

    public void setTextAlign(int textAlign) {
        this.textAlign = textAlign;
        repaintControl();
    }

    public boolean isWordWrap() {
        return wordWrap;
    }

    public void setWordWrap(boolean wordWrap) {
        this.wordWrap = wordWrap;
        repaintControl();
    }

    public int getScrollBarWidth() {
        return barwidth;
    }

    public void setScrollBarWidth(int barwidth) {
        this.barwidth = barwidth;
        repaintControl();
    }

    public void setText(String text) {
        internalSetText(text);
    }

    private void internalSetText(String text) {
        //判断最大长度
        if (text.length() > getMaxLength()) {
            text = text.substring(0, getMaxLength());
        }
        super.setText(text);
        repaintControl();
    }

    public int getBorderColor() {
        return borderColor;
    }

    public void setBorderColor(int borderColor) {
        this.borderColor = borderColor;
        repaintControl();
    }

    public int getScrollBarColor() {