package net.miginfocom.layout; /* * License (BSD): * ============== * * Copyright (c) 2004, Mikael Grev, MiG InfoCom AB. (miglayout (at) miginfocom (dot) com) * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list * of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this * list of conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * Neither the name of the MiG InfoCom AB nor the names of its contributors may be * used to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * * @version 1.0 * @author Mikael Grev, MiG InfoCom AB * Date: 2006-sep-08 */ /** A class that wraps the important parts of a Component. *
* NOTE!.equals() and .hashcode() should be forwarded to the wrapped component. E.g. *
* public int hashCode() { return getComponent().hashCode(); } public final boolean equals(Object o) { if (o instanceof ComponentWrapper == false) return false; return getComponent().equals(((ComponentWrapper) o).getComponent()); } **/ public interface ComponentWrapper { static final int TYPE_UNSET = -1; public static final int TYPE_UNKNOWN = 0; public static final int TYPE_CONTAINER = 1; public static final int TYPE_LABEL = 2; public static final int TYPE_TEXT_FIELD = 3; public static final int TYPE_TEXT_AREA = 4; public static final int TYPE_BUTTON = 5; public static final int TYPE_LIST = 6; public static final int TYPE_TABLE = 7; public static final int TYPE_SCROLL_PANE = 8; public static final int TYPE_IMAGE = 9; public static final int TYPE_PANEL = 10; public static final int TYPE_COMBO_BOX = 11; public static final int TYPE_SLIDER = 12; public static final int TYPE_SPINNER = 13; public static final int TYPE_PROGRESS_BAR = 14; public static final int TYPE_TREE = 15; public static final int TYPE_CHECK_BOX = 16; public static final int TYPE_SCROLL_BAR = 17; public static final int TYPE_SEPARATOR = 18; public static final int TYPE_TABBED_PANE = 19; /** Returns the actual object that this wrapper is aggregating. This might be needed for getting * information about the object that the wrapper interface does not provide. *
* If this is a container the container should be returned instead.
* @return The actual object that this wrapper is aggregating. Not null
.
*/
public abstract Object getComponent();
/** Returns the current x coordinate for this component.
* @return The current x coordinate for this component.
*/
public abstract int getX();
/** Returns the current y coordinate for this component.
* @return The current y coordinate for this component.
*/
public abstract int getY();
/** Returns the current width for this component.
* @return The current width for this component.
*/
public abstract int getWidth();
/** Returns the current height for this component.
* @return The current height for this component.
*/
public abstract int getHeight();
/** Returns the screen x-coordinate for the upper left coordinate of the component layout-able bounds.
* @return The screen x-coordinate for the upper left coordinate of the component layout-able bounds.
*/
public abstract int getScreenLocationX();
/** Returns the screen y-coordinate for the upper left coordinate of the component layout-able bounds.
* @return The screen y-coordinate for the upper left coordinate of the component layout-able bounds.
*/
public abstract int getScreenLocationY();
/** Returns the minimum width of the component.
* @param hHint The Size hint for the other dimension. An implementation can use this value or the
* current size for the widget in this dimension, or a combination of both, to calculate the correct size.
* Use -1 to denote that there is no hint. This corresponds with SWT.DEFAULT.
* @return The minimum width of the component.
* @since 3.5. Added the hint as a parameter knowing that a correction and recompilation is necessary for
* any implementing classes. This change was worth it though.
*/
public abstract int getMinimumWidth(int hHint);
/** Returns the minimum height of the component.
* @param wHint The Size hint for the other dimension. An implementation can use this value or the
* current size for the widget in this dimension, or a combination of both, to calculate the correct size.
* Use -1 to denote that there is no hint. This corresponds with SWT.DEFAULT.
* @return The minimum height of the component.
* @since 3.5. Added the hint as a parameter knowing that a correction and recompilation is necessary for
* any implementing classes. This change was worth it though.
*/
public abstract int getMinimumHeight(int wHint);
/** Returns the preferred width of the component.
* @param hHint The Size hint for the other dimension. An implementation can use this value or the
* current size for the widget in this dimension, or a combination of both, to calculate the correct size.
* Use -1 to denote that there is no hint. This corresponds with SWT.DEFAULT.
* @return The preferred width of the component.
* @since 3.5. Added the hint as a parameter knowing that a correction and recompilation is necessary for
* any implementing classes. This change was worth it though.
*/
public abstract int getPreferredWidth(int hHint);
/** Returns the preferred height of the component.
* @param wHint The Size hint for the other dimension. An implementation can use this value or the
* current size for the widget in this dimension, or a combination of both, to calculate the correct size.
* Use -1 to denote that there is no hint. This corresponds with SWT.DEFAULT.
* @return The preferred height of the component.
* @since 3.5. Added the hint as a parameter knowing that a correction and recompilation is necessary for
* any implementing classes. This change was worth it though.
*/
public abstract int getPreferredHeight(int wHint);
/** Returns the maximum width of the component.
* @param hHint The Size hint for the other dimension. An implementation can use this value or the
* current size for the widget in this dimension, or a combination of both, to calculate the correct size.
* Use -1 to denote that there is no hint. This corresponds with SWT.DEFAULT.
* @return The maximum width of the component.
* @since 3.5. Added the hint as a parameter knowing that a correction and recompilation is necessary for
* any implementing classes. This change was worth it though.
*/
public abstract int getMaximumWidth(int hHint);
/** Returns the maximum height of the component.
* @param wHint The Size hint for the other dimension. An implementation can use this value or the
* current size for the widget in this dimension, or a combination of both, to calculate the correct size.
* Use -1 to denote that there is no hint. This corresponds with SWT.DEFAULT.
* @return The maximum height of the component.
* @since 3.5. Added the hint as a parameter knowing that a correction and recompilation is necessary for
* any implementing classes. This change was worth it though.
*/
public abstract int getMaximumHeight(int wHint);
/** Sets the component's bounds.
* @param x The x coordinate.
* @param y The y coordinate.
* @param width The width.
* @param height The height.
*/
public abstract void setBounds(int x, int y, int width, int height);
/** Returns if the component's visibility is set to true
. This should not return if the component is
* actually visible, but if the visibility is set to true or not.
* @return true
means visible.
*/
public abstract boolean isVisible();
/** Returns the baseline for the component given the suggested height.
* @param width The width to calculate for if other than the current. If -1
the current size should be used.
* @param height The height to calculate for if other than the current. If -1
the current size should be used.
* @return The baseline from the top or -1 if not applicable.
*/
public abstract int getBaseline(int width, int height);
/** Returns if the component has a baseline and if it can be retrieved. Should for instance return
* false
for Swing before mustang.
* @return If the component has a baseline and if it can be retrieved.
*/
public abstract boolean hasBaseline();
/** Returns the container for this component.
* @return The container for this component. Will return null
if the component has no parent.
*/
public abstract ContainerWrapper getParent();
/** Returns the pixel unit factor for the horizontal or vertical dimension.
*
* The factor is 1 for both dimensions on the normal font in a JPanel on Windows. The factor should increase with a bigger "X". *
* This is the Swing version: *
* Rectangle2D r = fm.getStringBounds("X", parent.getGraphics()); * wFactor = r.getWidth() / 6; * hFactor = r.getHeight() / 13.27734375f; ** @param isHor If it is the horizontal factor that should be returned. * @return The factor. */ public abstract float getPixelUnitFactor(boolean isHor); /** Returns the DPI (Dots Per Inch) of the screen the component is currently in or for the default * screen if the component is not visible. *
* If headless mode {@link net.miginfocom.layout.PlatformDefaults#getDefaultDPI} will be returned. * @return The DPI. */ public abstract int getHorizontalScreenDPI(); /** Returns the DPI (Dots Per Inch) of the screen the component is currently in or for the default * screen if the component is not visible. *
* If headless mode {@link net.miginfocom.layout.PlatformDefaults#getDefaultDPI} will be returned.
* @return The DPI.
*/
public abstract int getVerticalScreenDPI();
/** Returns the pixel size of the screen that the component is currently in or for the default
* screen if the component is not visible or null
.
*
* If in headless mode 1024
is returned.
* @return The screen size. E.g. 1280
.
*/
public abstract int getScreenWidth();
/** Returns the pixel size of the screen that the component is currently in or for the default
* screen if the component is not visible or null
.
*
* If in headless mode 768
is returned.
* @return The screen size. E.g. 1024
.
*/
public abstract int getScreenHeight();
/** Returns a String id that can be used to reference the component in link constraints. This value should
* return the default id for the component. The id can be set for a component in the constraints and if
* so the value returned by this method will never be used. If there are no sensible id for the component
* null
should be returned.
*
* For instance the Swing implementation returns the string returned from Component.getName()
.
* @return The string link id or null
.
*/
public abstract String getLinkId();
/** Returns a hash code that should be reasonably different for anything that might change the layout. This value is used to
* know if the component layout needs to clear any caches.
* @return A hash code that should be reasonably different for anything that might change the layout. Returns -1 if the widget is
* disposed.
*/
public abstract int getLayoutHashCode();
/** Returns the padding on a component by component basis. This method can be overridden to return padding to compensate for example for
* borders that have shadows or where the outer most pixel is not the visual "edge" to align to.
*
* Default implementation returns null
for all components except for Windows XP's JTabbedPane which will return new Insets(0, 0, 2, 2).
*
* NOTE! To reduce generated garbage the returned padding should never be changed so that the same insets can be returned many times.
* @return null
if no padding. NOTE! To reduce generated garbage the returned padding should never be changed so that
* the same insets can be returned many times. [top, left, bottom, right]
*/
public int[] getVisualPadding();
/** Paints component outline to indicate where it is.
* @param showVisualPadding If the visual padding should be shown in the debug drawing.
*/
public abstract void paintDebugOutline(boolean showVisualPadding);
/** Returns the type of component that this wrapper is wrapping.
*
* This method can be invoked often so the result should be cached. *
* @param disregardScrollPane Is true
any wrapping scroll pane should be disregarded and the type
* of the scrolled component should be returned.
* @return The type of component that this wrapper is wrapping. E.g. {@link #TYPE_LABEL}.
*/
public abstract int getComponentType(boolean disregardScrollPane);
/** Returns in what way the min/pref/max sizes relates to it's height or width for the current settings of the component (like wrapText).
* If the min/pref/max height depends on it's width return {@link net.miginfocom.layout.LayoutUtil#HORIZONTAL}
* If the min/pref/max width depends on it's height (not common) return {@link net.miginfocom.layout.LayoutUtil#VERTICAL}
* If there is no connection between the preferred min/pref/max and the size of the component return -1.
* @since 5.0
*/
public abstract int getContentBias();
}