¼Ò¼³°°ÀºÀÚ¹Ù3ºÎ  13Àå AWT  13.9.8 ScrollBar  

 

13.9.8 ScrollBar

 

ºê¶ó¿ìÁ®ÀÇ Å©±â¸¦ ³Ñ¾î¼­´Â Å« ¹®¼­¸¦ º¼ ¶§, ¹®¼­ÀÇ ¿À¸¥ÂÊÀ̳ª ¾Æ·¡ÂÊ¿¡ »ý±â´Â ±ä ¸·´ë±â°¡ ÀÖÁÒ? ±×°ÍÀÌ ½ºÅ©·Ñ¹Ù¶ó´Â °ÍÀº ´©±¸³ª°¡ ´Ù ¾Æ´Â »ç½ÇÀÔ´Ï´Ù. ½ºÅ©·Ñ¹Ù¸¦ ÇÁ·Î±×·¥ÇÑ´Ù´Â °ÍÀº ±× ¸·´ë±â¸¦ »ç¿ëÇϰųª ¶Ç´Â ±× ¸·´ë±â¿¡ ¾î¶°ÇÑ ±â´ÉÀ» ÷°¡Çؼ­ »ç¿ëÇÏ´Â °ÍÀÔ´Ï´Ù. ½ºÅ©·Ñ¹Ù ÄÄÆ÷³ÍÆ®´Â ÀϹÝÀûÀ¸·Î »ç¿ëÇÏ´Â ¼öÆò ¶Ç´Â ¼öÁ÷ ½ºÅ©·Ñ¹Ù¿Í °°Àº ¸ñÀûÀ¸·Î »ç¿ëÇϰųª »ç¿ëÀÚ°¡ ƯÁ¤ÇÑ °ªÀ» ¼³Á¤Çϱâ À§ÇØ Á¶ÀÛÇÏ´Â µµ±¸·Î ÀÚÁÖ »ç¿ëµÇ°í ÀÖ½À´Ï´Ù. ƯÁ¤ÇÑ °ªÀ» ¼³Á¤ÇÏ´Â °ÍÀÌ ¹«½¼ ¾ß±×³Ä°í¿ä? ±Ã±ÝÇÏ½Ã¸é ´ÙÀ½¿¡ ³ª¿À´Â ¿¹Á¦¸¦ º¸½ÃÁÒ. ´ÙÀ½ ¿¹Á¦´Â ½ºÅ©·Ñ¹ÙÀÇ À§Ä¡¿¡ µû¶ó °ªÀÌ Áõ°¨ÇÏ´Â ½ºÅ©·Ñ¹Ù ÄÄÆ÷³ÍÆ® ¿¹Á¦ÀÔ´Ï´Ù.

 

ScrollbarTestŬ·¡½º()  (ScrollbarÄÄÆ÷³ÍÆ®¿¡ °üÇÑ ¿¹Á¦)

import java.awt.*;

import java.awt.event.*;

class ScrollbarTest extends Frame{

private Panel p;

private Scrollbar slider;

public ScrollbarTest(){

slider=new Scrollbar(Scrollbar.HORIZONTAL,0,4,0,100);

add("South", slider);        

setLocation(100, 100);

pack();

slider.addAdjustmentListener(new AdjustmentListener(){

public void adjustmentValueChanged(AdjustmentEvent e){

System.out.println(e.getAdjustmentType()+","+e.getValue());

}

});

}

public static void main(String[] args){

ScrollbarTest f=new ScrollbarTest();

f.setVisible(true);

}

}

C:\Java>javac ScrollbarTest.java

C:\Java>java ScrollbarTest

1,1  1,2  1,3  1,4  1,5  1,6  1,7  2,6  2,5  2,4  2,3  2,2  5,3  5,5  5,8  5,9  5,11  5,12

 

½ºÅ©·Ñ¹Ù¸¦ ¸¸µé°í FrameÀÇ ÇÏ´Ü¿¡ ºÙÀÔ´Ï´Ù. Scrollbar.HORIZONTAL·Î ¼³Á¤ÇÏ¿´À¸¹Ç·Î ½ºÅ©·Ñ¹Ù´Â ¼öÆò¹æÇâÀ¸·Î »ý¼ºµË´Ï´Ù. ¼öÁ÷¹æÇâÀ¸·Î »ý¼ºÇÏ°í ½Í´Ù¸é HORIZONTALÀ» VERTICAL·Î ¹Ù²ãÁÖ¸é µË´Ï´Ù. ±× µÚ·Î À̾îÁö´Â ¼ýÀÚµé Áß¿¡¼­ ù¹øÂ°ÀÇ 0Àº ½ºÅ©·Ñ¹Ù ¸·´ë±âÀÇ »ý¼º½Ã À§Ä¡°ª, µÎ¹øÂ°ÀÇ 4´Â ½ºÅ©·Ñ¹ÙÀÇ ¸·´ë±âÀÇ Å©±â, ¼¼¹øÂ°ÀÇ 0Àº ½ºÅ©·Ñ¹ÙÀÇ ÃÖ¼Ò°ª, ³×¹øÂ°ÀÇ 100Àº ½ºÅ©·Ñ¹ÙÀÇ ÃÖ´ë°ªÀ» ³ªÅ¸³À´Ï´Ù.

 

n        slider=new Scrollbar(Scrollbar.HORIZONTAL,0,4,0,100);

n        add("South", slider);

 

½ºÅ©·Ñ¹ÙÀÇ À̵¿À» °¨Áö, ¹æÇâ°ú °ªÀ» Ãâ·ÂÇÏ´Â ºÎºÐÀÔ´Ï´Ù. getAdjustmentType() ¸Þ¼­µå´Â ½ºÅ©·Ñ¹ÙÀÇ Á¶Á¤ ¹æÇâ°ªÀ» ¹ÝÈ¯ÇØÁÖ°í getValue()¸Þ¼­µå´Â ½ºÅ©·Ñ¹ÙÀÇ Á¶Á¤°ªÀ» ¹ÝÈ¯ÇØÁÖ°í ÀÖ½À´Ï´Ù.

 

n        System.out.print(e.getAdjustmentType()+","+e.getValue()+"  ");

 

ÀÌÁ¦´Â °á°ú°ªÀ» º¸ÁÒ. 1,1 À̶ó°í ÂïÇôÀÖÁÒ? ù¹øÂ°ÀÇ 1Àº ½ºÅ©·Ñ¹ÙÀÇ À̵¿ ¹æÇâÀ» ³ªÅ¸³À´Ï´Ù. ÄÄÆ÷³ÍÆ® ¿ìÃøÀÇ ¼¼¸ð¸¦ ´©¸£¸é 1, ÄÄÆ÷³ÍÆ® ÁÂÃøÀÇ ¼¼¸ð¸¦ ´©¸£¸é 2°¡ ÂïÈü´Ï´Ù. ´Ù½Ã ¸»Çؼ­ ½ºÅ©·Ñ¹Ù°¡ ¿ìÃøÀ¸·Î À̵¿Çϸé 1, ÁÂÃøÀ¸·Î À̵¿Çϸé 2ÀÔ´Ï´Ù. ½ºÅ©·Ñ¹Ù¸¦ ¸¶¿ì½º·Î ¼±ÅÃÇØ¼­ À̵¿½ÃŰ¸é ¹æÇâ¿¡ »ó°ü¾øÀÌ 5°¡ ³ª¿É´Ï´Ù. µÎ¹øÂ°ÀÇ 1Àº ¼³Á¤ °ªÀ» ³ªÅ¸³À´Ï´Ù. ÃÖ¼Ò°ªÀº 0, ÃÖ´ë°ªÀº 96ÀÔ´Ï´Ù. 100ÀÌ ¿ì¸®°¡ ¼³Á¤ÇÑ ÃÖ´ë°ªÀÌÁö¸¸ ½ºÅ©·Ñ¹Ù°¡ Â÷ÁöÇÏ´Â Å©±âÀÎ 4¸¦ »©ÁÖ¾î¾ß¸¸ Çϴϱî¿ä. ±×·¡¼­ 96ÀÌ µÈ °ÍÀÔ´Ï´Ù.

 

½ºÅ©·Ñ¹Ù¿¡ ´ëÇØ ¹è¿öºÃ½À´Ï´Ù. º°°Å ¾Æ´ÏÁÒ? ÇÏÁö¸¸ ½ºÅ©·Ñ¹Ù¸¦ ÀûÀýÇÏ°Ô »ç¿ëÇÏ¸é ¾ÆÁÖ ¸ÚÁø ÀÛǰÀÌ µË´Ï´Ù. À©¾ÚÇÁÀÇ ÀÌÄ÷¶óÀÌÁ® ½ºÅ©·Ñ¹Ù°¡ ´ëÇ¥ÀûÀÎ ¿¹ÀÌÁö¿ä. °£´ÜÇϸ鼭µµ »ç¿ëÇϱⰡ Æí¸®ÇÏÁÒ. Âü ¸ÚÁöÁö ¾Ê½À´Ï±î?

 

Scrollbar static »ó¼ö

static final int HORIZONTAL: ¼öÆò ½ºÅ©·Ñ¹Ù¸¦ ³ªÅ¸³À´Ï´Ù.

static final int VERTICAL: ¼öÁ÷ ½ºÅ©·Ñ¹Ù¸¦ ³ªÅ¸³À´Ï´Ù.

 

Scrollbar ÁÖ¿ä »ý¼ºÀÚ ¸Þ¼­µå

Scrollbar(): ½ºÅ©·Ñ¹Ù¸¦ »ý¼ºÇÕ´Ï´Ù.

Scrollbar(int orientation): ÁöÁ¤µÈ ¹æÇâÀÇ »õ·Î¿î ½ºÅ©·Ñ¹Ù¸¦ »ý¼ºÇÕ´Ï´Ù.

Scrollbar(int orientation, int value, int visible, int minimum, int maximum):ÁöÁ¤µÈ ¹æÇâ, ÃʱⰪ, ÆäÀÌÁö »çÀÌÁî, ÃÖ¼ÒÄ¡, ¹× ÃÖ´ëÄ¡¸¦ °¡Áö´Â »õ·Î¿î ½ºÅ©·Ñ¹Ù¸¦ »ý¼ºÇÕ´Ï´Ù.

 

Scrollbar ÁÖ¿ä ÀÏ¹Ý ¸Þ¼­µå

int getBlockIncrement(): ½ºÅ©·Ñ¹ÙÀÇ ºí·Ï Áõ°¡·®À» ¾ò½À´Ï´Ù

int getMaximum(): ½ºÅ©·Ñ¹ÙÀÇ ÃÖ´ë°ªÀ» ¾ò½À´Ï´Ù.

int getMinimum(): ½ºÅ©·Ñ¹ÙÀÇ ÃÖ¼Ò°ªÀ» ¾ò½À´Ï´Ù.

int getOrientation(): ½ºÅ©·Ñ¹ÙÀÇ ¹æÇ⼺°ªÀ» ¾ò½À´Ï´Ù

int getUnitIncrement(): ½ºÅ©·Ñ¹ÙÀÇ ´ÜÀ§ Áõ°¡(unit increment)·®À» ¾ò½À´Ï´Ù.

int getValue(): ½ºÅ©·Ñ¹ÙÀÇ ÇöÀç °ªÀ» ¾ò½À´Ï´Ù.

int getVisibleAmount(): ½ºÅ©·Ñ¹ÙÀÇ º¸ÀÌ´Â ºÎºÐÀÇ Å©±â¸¦ ¾ò½À´Ï´Ù

void setMaximum(int newMaximum): ½ºÅ©·Ñ¹ÙÀÇ ÃÖ´ë°ªÀ» ¼³Á¤ÇÕ´Ï´Ù.

void setMinimum(int newMinimum): ½ºÅ©·Ñ¹ÙÀÇ ÃÖ¼Ò°ªÀ» ¼³Á¤ÇÕ´Ï´Ù.

void setOrientation(int orientation): ½ºÅ©·Ñ¹ÙÀÇ ¹æÇ⼺À» ¼³Á¤ÇÕ´Ï´Ù.

void setUnitIncrement(int v): ½ºÅ©·Ñ¹ÙÀÇ ´ÜÀ§ Áõ°¡·®À» ¼³Á¤ÇÕ´Ï´Ù.

void setValue(int newValue): ½ºÅ©·Ñ¹ÙÀÇ ÇöÀç °ªÀ» ¼³Á¤ÇÕ´Ï´Ù 

void setValues(int value, int visible, int minimum, int maximum): ½ºÅ©·Ñ¹ÙÀÇ ¼Ó¼º °ªµéÀ» ¼³Á¤ÇÕ´Ï´Ù.

void setVisibleAmount(int newAmount): ½ºÅ©·Ñ¹ÙÀÇ º¸ÀÌ´Â ºÎºÐÀÇ Å©±â¸¦ ¼³Á¤ÇÕ´Ï´Ù.



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