Mercurial > projects > dwt2
view org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/graphics/Color.d @ 120:536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
===D2===
* added [Try]Immutable/Const/Shared templates to work with differenses in D1/D2 instead of version statements
used these templates to work with strict type storage rules of dmd-2.053
* com.ibm.icu now also compilable with D2, but not tested yet
* small fixes
Snippet288 - shared data is in TLS
===Phobos===
* fixed critical bugs in Phobos implemention
completely incorrect segfault prone fromStringz (Linux's port ruthless killer)
terrible, incorrect StringBuffer realization (StyledText killer)
* fixed small bugs as well
Snippet72 - misprint in the snippet
* implemented missed functionality for Phobos
ByteArrayOutputStream implemented (image loading available)
formatting correctly works for all DWT's cases
As a result, folowing snippets now works with Phobos (Snippet### - what is fixed):
Snippet24, 42, 111, 115, 130, 235, 276 - bad string formatting
Snippet48, 282 - crash on image loading
Snippet163, 189, 211, 213, 217, 218, 222 - crash on copy/cut in StyledText
Snippet244 - hang-up
===Tango===
* few changes for the latest Tango trunc-r5661
* few small performance improvments
===General===
* implMissing-s for only one version changed to implMissingInTango/InPhobos
* incorrect calls to Format in toString-s fixed
* fixed loading \uXXXX characters in ResourceBundle
* added good UTF-8 support for StyledText, TextLayout (Win32) and friends
UTF functions revised and tested. It is now in java.nonstandard.*Utf modules
StyledText and TextLayout (Win32) modules revised for UTF-8 support
* removed small diferences in most identical files in *.swt.* folders
*.swt.internal.image, *.swt.events and *.swt.custom are identical in Win32/Linux32
now 179 of 576 (~31%) files in *.swt.* folders are fully identical
* Win32: snippets now have right subsystem, pretty icons and native system style controls
* small fixes in snippets
Snippet44 - it's not Snippet44
Snippet212 - functions work with different images and offsets arrays
Win32: Snippet282 - crash on close if the button has an image
Snippet293 - setGrayed is commented
and others
Win32: As a result, folowing snippets now works
Snippet68 - color doesn't change
Snippet163, 189, 211, 213, 217, 218, 222 - UTF-8 issues (see above)
Snippet193 - no tabel headers
author | Denis Shelomovskij <verylonglogin.reg@gmail.com> |
---|---|
date | Sat, 09 Jul 2011 15:50:20 +0300 |
parents | b98647bc0aef |
children |
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/******************************************************************************* * Copyright (c) 2000, 2008 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module org.eclipse.swt.graphics.Color; import org.eclipse.swt.SWT; import org.eclipse.swt.SWTException; import org.eclipse.swt.internal.win32.OS; import org.eclipse.swt.graphics.Resource; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.graphics.Device; import java.lang.all; /** * Instances of this class manage the operating system resources that * implement SWT's RGB color model. To create a color you can either * specify the individual color components as integers in the range * 0 to 255 or provide an instance of an <code>RGB</code>. * <p> * Application code must explicitly invoke the <code>Color.dispose()</code> * method to release the operating system resources managed by each instance * when those instances are no longer required. * </p> * * @see RGB * @see Device#getSystemColor * @see <a href="http://www.eclipse.org/swt/snippets/#color">Color and RGB snippets</a> * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: PaintExample</a> * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> */ public final class Color : Resource { alias Resource.init_ init_; /** * the handle to the OS color resource * (Warning: This field is platform dependent) * <p> * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT * public API. It is marked public only so that it can be shared * within the packages provided by SWT. It is not available on all * platforms and should never be accessed from application code. * </p> */ public COLORREF handle; /** * Prevents uninitialized instances from being created outside the package. */ this(Device device) { super(device); } /** * Constructs a new instance of this class given a device and the * desired red, green and blue values expressed as ints in the range * 0 to 255 (where 0 is black and 255 is full brightness). On limited * color devices, the color instance created by this call may not have * the same RGB values as the ones specified by the arguments. The * RGB values on the returned instance will be the color values of * the operating system color. * <p> * You must dispose the color when it is no longer required. * </p> * * @param device the device on which to allocate the color * @param red the amount of red in the color * @param green the amount of green in the color * @param blue the amount of blue in the color * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li> * </ul> * * @see #dispose */ public this (Device device, int red, int green, int blue) { super(device); init_(red, green, blue); init_(); } /** * Constructs a new instance of this class given a device and an * <code>RGB</code> describing the desired red, green and blue values. * On limited color devices, the color instance created by this call * may not have the same RGB values as the ones specified by the * argument. The RGB values on the returned instance will be the color * values of the operating system color. * <p> * You must dispose the color when it is no longer required. * </p> * * @param device the device on which to allocate the color * @param rgb the RGB values of the desired color * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> * <li>ERROR_NULL_ARGUMENT - if the rgb argument is null</li> * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue components of the argument are not between 0 and 255</li> * </ul> * * @see #dispose */ public this (Device device, constRGB rgb) { super(device); if (rgb is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); init_(rgb.red, rgb.green, rgb.blue); init_(); } void destroy() { /* * If this is a palette-based device, * Decrease the reference count for this color. * If the reference count reaches 0, the slot may * be reused when another color is allocated. */ auto hPal = device.hPalette; if (hPal !is null) { int index = OS.GetNearestPaletteIndex(hPal, handle); int[] colorRefCount = device.colorRefCount; if (colorRefCount[index] > 0) { colorRefCount[index]--; } } handle = -1; } /** * Compares the argument to the receiver, and returns true * if they represent the <em>same</em> object using a class * specific comparison. * * @param object the object to compare with this object * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise * * @see #hashCode */ public override equals_t opEquals (Object object) { if (object is this) return true; if (!(cast(Color)object)) return false; Color color = cast(Color) object; return device is color.device && (handle & 0xFFFFFF) is (color.handle & 0xFFFFFF); } /** * Returns the amount of blue in the color, from 0 to 255. * * @return the blue component of the color * * @exception SWTException <ul> * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> * </ul> */ public int getBlue () { if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); return (handle & 0xFF0000) >> 16; } /** * Returns the amount of green in the color, from 0 to 255. * * @return the green component of the color * * @exception SWTException <ul> * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> * </ul> */ public int getGreen () { if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); return (handle & 0xFF00) >> 8 ; } /** * Returns the amount of red in the color, from 0 to 255. * * @return the red component of the color * * @exception SWTException <ul> * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> * </ul> */ public int getRed () { if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); return handle & 0xFF; } /** * Returns an <code>RGB</code> representing the receiver. * * @return the RGB for the color * * @exception SWTException <ul> * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> * </ul> */ public RGB getRGB () { if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); return new RGB(cast(int)handle & 0xFF,cast(int) (handle & 0xFF00) >> 8,cast(int) (handle & 0xFF0000) >> 16); } /** * Returns an integer hash code for the receiver. Any two * objects that return <code>true</code> when passed to * <code>equals</code> must return the same value for this * method. * * @return the receiver's hash * * @see #equals */ public int hashCode () { return handle; } /** * Allocates the operating system resources associated * with the receiver. * * @param device the device on which to allocate the color * @param red the amount of red in the color * @param green the amount of green in the color * @param blue the amount of blue in the color * * @exception IllegalArgumentException <ul> * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li> * </ul> * * @see #dispose */ void init_(int red, int green, int blue) { if (red > 255 || red < 0 || green > 255 || green < 0 || blue > 255 || blue < 0) { SWT.error(SWT.ERROR_INVALID_ARGUMENT); } handle = (red & 0xFF) | ((green & 0xFF) << 8) | ((blue & 0xFF) << 16); /* If this is not a palette-based device, return */ auto hPal = device.hPalette; if (hPal is null) return; int[] colorRefCount = device.colorRefCount; /* Add this color to the default palette now */ /* First find out if the color already exists */ int index = OS.GetNearestPaletteIndex(hPal, handle); /* See if the nearest color actually is the color */ PALETTEENTRY entry; OS.GetPaletteEntries(hPal, index, 1, &entry); if ((entry.peRed is cast(byte)red) && (entry.peGreen is cast(byte)green) && (entry.peBlue is cast(byte)blue)) { /* Found the color. Increment the ref count and return */ colorRefCount[index]++; return; } /* Didn't find the color, allocate it now. Find the first free entry */ int i = 0; while (i < colorRefCount.length) { if (colorRefCount[i] is 0) { index = i; break; } i++; } if (i is colorRefCount.length) { /* No free entries, use the closest one */ /* Remake the handle from the actual rgbs */ handle = (entry.peRed & 0xFF) | ((entry.peGreen & 0xFF) << 8) | ((entry.peBlue & 0xFF) << 16); } else { /* Found a free entry */ entry.peRed = cast(BYTE)(red & 0xFF); entry.peGreen = cast(BYTE)(green & 0xFF); entry.peBlue = cast(BYTE)(blue & 0xFF); entry.peFlags = 0; OS.SetPaletteEntries(hPal, index, 1, &entry); } colorRefCount[index]++; } /** * Returns <code>true</code> if the color has been disposed, * and <code>false</code> otherwise. * <p> * This method gets the dispose state for the color. * When a color has been disposed, it is an error to * invoke any other method using the color. * * @return <code>true</code> when the color is disposed and <code>false</code> otherwise */ override public bool isDisposed() { return handle is -1; } /** * Returns a string containing a concise, human-readable * description of the receiver. * * @return a string representation of the receiver */ override public String toString () { if (isDisposed()) return "Color {*DISPOSED*}"; //$NON-NLS-1$ return Format( "Color {{{}, {}, {}}", getRed(), getGreen(), getBlue()); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ } /** * Invokes platform specific functionality to allocate a new color. * <p> * <b>IMPORTANT:</b> This method is <em>not</em> part of the public * API for <code>Color</code>. It is marked public only so that it * can be shared within the packages provided by SWT. It is not * available on all platforms, and should never be called from * application code. * </p> * * @param device the device on which to allocate the color * @param handle the handle for the color * @return a new color object containing the specified device and handle */ public static Color win32_new(Device device, int handle) { Color color = new Color(device); color.disposeChecking = false; color.handle = handle; return color; } }