Java로 화면 해상도를 얻으려면 어떻게해야합니까?

Java로 화면 해상도를 얻으려면 어떻게해야합니까?

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화면 해상도 (폭 x 높이)를 어떻게 픽셀 단위로 얻을 수 있습니까?

JFrame과 Java 스윙 메소드를 사용하고 있습니다.

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이 Toolkit.getScreenSize()방법으로 화면 크기를 얻을 수 있습니다 .

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
double width = screenSize.getWidth();
double height = screenSize.getHeight();

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다중 모니터 구성에서는 다음을 사용해야합니다.

GraphicsDevice gd = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
int width = gd.getDisplayMode().getWidth();
int height = gd.getDisplayMode().getHeight();

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DPI로 화면 해상도를 얻으려면의 getScreenResolution()방법 을 사용해야합니다 Toolkit.

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자료 :

• javadoc-Toolkit.getScreenSize ()
• Java 버그 5100801- Toolkit.getScreenSize ()가 multimon, Linux에서 올바른 차원을 반환하지 않습니다.

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이 코드는 시스템의 그래픽 장치를 열거하고 (여러 모니터가 설치된 경우) 해당 정보를 사용하여 모니터 선호도 또는 자동 배치를 결정할 수 있습니다 (일부 시스템은 앱이 실행되는 동안 실시간 디스플레이를 위해 작은 모니터를 사용함) 배경 및 이러한 모니터는 크기, 화면 색상 등으로 식별 할 수 있습니다.) :

// Test if each monitor will support my app's window
// Iterate through each monitor and see what size each is
GraphicsEnvironment ge      = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[]    gs      = ge.getScreenDevices();
Dimension           mySize  = new Dimension(myWidth, myHeight);
Dimension           maxSize = new Dimension(minRequiredWidth, minRequiredHeight);
for (int i = 0; i < gs.length; i++)
{
    DisplayMode dm = gs[i].getDisplayMode();
    if (dm.getWidth() > maxSize.getWidth() && dm.getHeight() > maxSize.getHeight())
    {   // Update the max size found on this monitor
        maxSize.setSize(dm.getWidth(), dm.getHeight());
    }

    // Do test if it will work here
}

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이 전화로 원하는 정보를 얻을 수 있습니다.

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();

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주어진 구성 요소가 현재 지정된 화면의 해상도입니다 (루트 창의 대부분이 해당 화면에 표시됨).

public Rectangle getCurrentScreenBounds(Component component) {
    return component.getGraphicsConfiguration().getBounds();
}

용법:

Rectangle currentScreen = getCurrentScreenBounds(frameOrWhateverComponent);
int currentScreenWidth = currentScreen.width // current screen width
int currentScreenHeight = currentScreen.height // current screen height
// absolute coordinate of current screen > 0 if left of this screen are further screens
int xOfCurrentScreen = currentScreen.x

툴바 등을 존중하려면 다음과 같이 계산해야합니다.

GraphicsConfiguration gc = component.getGraphicsConfiguration();
Insets screenInsets = Toolkit.getDefaultToolkit().getScreenInsets(gc);

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가장 오른쪽 화면의 가장 오른쪽 가장자리의 x 위치를 반환하는 일부 기능 코드 (Java 8)가 있습니다. 화면이 없으면 0을 반환합니다.

  GraphicsDevice devices[];

  devices = GraphicsEnvironment.
     getLocalGraphicsEnvironment().
     getScreenDevices();

  return Stream.
     of(devices).
     map(GraphicsDevice::getDefaultConfiguration).
     map(GraphicsConfiguration::getBounds).
     mapToInt(bounds -> bounds.x + bounds.width).
     max().
     orElse(0);

다음은 JavaDoc에 대한 링크입니다.

GraphicsEnvironment.getLocalGraphicsEnvironment()
GraphicsEnvironment.getScreenDevices()
GraphicsDevice.getDefaultConfiguration()
GraphicsConfiguration.getBounds()

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int resolution =Toolkit.getDefaultToolkit().getScreenResolution();

System.out.println(resolution);

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Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
double width = screenSize.getWidth();
double height = screenSize.getHeight();
framemain.setSize((int)width,(int)height);
framemain.setResizable(true);
framemain.setExtendedState(JFrame.MAXIMIZED_BOTH);

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These three functions return the screen size in Java. This code accounts for multi-monitor setups and task bars. The included functions are: getScreenInsets(), getScreenWorkingArea(), and getScreenTotalArea().

Code:

/**
 * getScreenInsets, This returns the insets of the screen, which are defined by any task bars
 * that have been set up by the user. This function accounts for multi-monitor setups. If a
 * window is supplied, then the the monitor that contains the window will be used. If a window
 * is not supplied, then the primary monitor will be used.
 */
static public Insets getScreenInsets(Window windowOrNull) {
    Insets insets;
    if (windowOrNull == null) {
        insets = Toolkit.getDefaultToolkit().getScreenInsets(GraphicsEnvironment
                .getLocalGraphicsEnvironment().getDefaultScreenDevice()
                .getDefaultConfiguration());
    } else {
        insets = windowOrNull.getToolkit().getScreenInsets(
                windowOrNull.getGraphicsConfiguration());
    }
    return insets;
}

/**
 * getScreenWorkingArea, This returns the working area of the screen. (The working area excludes
 * any task bars.) This function accounts for multi-monitor setups. If a window is supplied,
 * then the the monitor that contains the window will be used. If a window is not supplied, then
 * the primary monitor will be used.
 */
static public Rectangle getScreenWorkingArea(Window windowOrNull) {
    Insets insets;
    Rectangle bounds;
    if (windowOrNull == null) {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        insets = Toolkit.getDefaultToolkit().getScreenInsets(ge.getDefaultScreenDevice()
                .getDefaultConfiguration());
        bounds = ge.getDefaultScreenDevice().getDefaultConfiguration().getBounds();
    } else {
        GraphicsConfiguration gc = windowOrNull.getGraphicsConfiguration();
        insets = windowOrNull.getToolkit().getScreenInsets(gc);
        bounds = gc.getBounds();
    }
    bounds.x += insets.left;
    bounds.y += insets.top;
    bounds.width -= (insets.left + insets.right);
    bounds.height -= (insets.top + insets.bottom);
    return bounds;
}

/**
 * getScreenTotalArea, This returns the total area of the screen. (The total area includes any
 * task bars.) This function accounts for multi-monitor setups. If a window is supplied, then
 * the the monitor that contains the window will be used. If a window is not supplied, then the
 * primary monitor will be used.
 */
static public Rectangle getScreenTotalArea(Window windowOrNull) {
    Rectangle bounds;
    if (windowOrNull == null) {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        bounds = ge.getDefaultScreenDevice().getDefaultConfiguration().getBounds();
    } else {
        GraphicsConfiguration gc = windowOrNull.getGraphicsConfiguration();
        bounds = gc.getBounds();
    }
    return bounds;
}

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Here is a snippet of code I often use. It returns the full available screen area (even on multi-monitor setups) while retaining the native monitor positions.

public static Rectangle getMaximumScreenBounds() {
    int minx=0, miny=0, maxx=0, maxy=0;
    GraphicsEnvironment environment = GraphicsEnvironment.getLocalGraphicsEnvironment();
    for(GraphicsDevice device : environment.getScreenDevices()){
        Rectangle bounds = device.getDefaultConfiguration().getBounds();
        minx = Math.min(minx, bounds.x);
        miny = Math.min(miny, bounds.y);
        maxx = Math.max(maxx,  bounds.x+bounds.width);
        maxy = Math.max(maxy, bounds.y+bounds.height);
    }
    return new Rectangle(minx, miny, maxx-minx, maxy-miny);
}

On a computer with two full-HD monitors, where the left one is set as the main monitor (in Windows settings), the function returns

java.awt.Rectangle[x=0,y=0,width=3840,height=1080]

On the same setup, but with the right monitor set as the main monitor, the function returns

java.awt.Rectangle[x=-1920,y=0,width=3840,height=1080]

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int screenResolution = Toolkit.getDefaultToolkit().getScreenResolution();
System.out.println(""+screenResolution);

참고URL : https://stackoverflow.com/questions/3680221/how-can-i-get-screen-resolution-in-java