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comparison dwt/graphics/Color.d @ 213:36f5cb12e1a2

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Update to SWT 3.4M7
author Frank Benoit <benoit@tionex.de>
date Sat, 17 May 2008 17:34:28 +0200
parents ab60f3309436
children fd9c62a2998e
comparison
equal deleted inserted replaced
212:ab60f3309436 213:36f5cb12e1a2
37 * @see RGB 37 * @see RGB
38 * @see Device#getSystemColor 38 * @see Device#getSystemColor
39 */ 39 */
40 40
41 public final class Color : Resource { 41 public final class Color : Resource {
42
43 alias Resource.init_ init_;
42 44
43 /** 45 /**
44 * the handle to the OS color resource 46 * the handle to the OS color resource
45 * (Warning: This field is platform dependent) 47 * (Warning: This field is platform dependent)
46 * <p> 48 * <p>
53 public COLORREF handle; 55 public COLORREF handle;
54 56
55 /** 57 /**
56 * Prevents uninitialized instances from being created outside the package. 58 * Prevents uninitialized instances from being created outside the package.
57 */ 59 */
58 this() { 60 this(Device device) {
61 super(device);
59 } 62 }
60 63
61 /** 64 /**
62 * Constructs a new instance of this class given a device and the 65 * Constructs a new instance of this class given a device and the
63 * desired red, green and blue values expressed as ints in the range 66 * desired red, green and blue values expressed as ints in the range
81 * </ul> 84 * </ul>
82 * 85 *
83 * @see #dispose 86 * @see #dispose
84 */ 87 */
85 public this (Device device, int red, int green, int blue) { 88 public this (Device device, int red, int green, int blue) {
86 if (device is null) device = Device.getDevice(); 89 super(device);
87 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); 90 init_(red, green, blue);
88 init_(device, red, green, blue); 91 init_();
89 if (device.tracking) device.new_Object(this);
90 } 92 }
91 93
92 /** 94 /**
93 * Constructs a new instance of this class given a device and an 95 * Constructs a new instance of this class given a device and an
94 * <code>RGB</code> describing the desired red, green and blue values. 96 * <code>RGB</code> describing the desired red, green and blue values.
110 * </ul> 112 * </ul>
111 * 113 *
112 * @see #dispose 114 * @see #dispose
113 */ 115 */
114 public this (Device device, RGB rgb) { 116 public this (Device device, RGB rgb) {
115 if (device is null) device = Device.getDevice(); 117 super(device);
116 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
117 if (rgb is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); 118 if (rgb is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
118 init_(device, rgb.red, rgb.green, rgb.blue); 119 init_(rgb.red, rgb.green, rgb.blue);
119 if (device.tracking) device.new_Object(this); 120 init_();
120 } 121 }
121 122
122 /** 123 void destroy() {
123 * Disposes of the operating system resources associated with
124 * the color. Applications must dispose of all colors which
125 * they allocate.
126 */
127 override public void dispose() {
128 if (handle is -1) return;
129 if (device.isDisposed()) return;
130
131 /* 124 /*
132 * If this is a palette-based device, 125 * If this is a palette-based device,
133 * Decrease the reference count for this color. 126 * Decrease the reference count for this color.
134 * If the reference count reaches 0, the slot may 127 * If the reference count reaches 0, the slot may
135 * be reused when another color is allocated. 128 * be reused when another color is allocated.
141 if (colorRefCount[index] > 0) { 134 if (colorRefCount[index] > 0) {
142 colorRefCount[index]--; 135 colorRefCount[index]--;
143 } 136 }
144 } 137 }
145 handle = -1; 138 handle = -1;
146 if (device.tracking) device.dispose_Object(this);
147 device = null;
148 } 139 }
149 140
150 /** 141 /**
151 * Compares the argument to the receiver, and returns true 142 * Compares the argument to the receiver, and returns true
152 * if they represent the <em>same</em> object using a class 143 * if they represent the <em>same</em> object using a class
247 * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li> 238 * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li>
248 * </ul> 239 * </ul>
249 * 240 *
250 * @see #dispose 241 * @see #dispose
251 */ 242 */
252 void init_(Device device, int red, int green, int blue) { 243 void init_(int red, int green, int blue) {
253 if (red > 255 || red < 0 || green > 255 || green < 0 || blue > 255 || blue < 0) { 244 if (red > 255 || red < 0 || green > 255 || green < 0 || blue > 255 || blue < 0) {
254 DWT.error(DWT.ERROR_INVALID_ARGUMENT); 245 DWT.error(DWT.ERROR_INVALID_ARGUMENT);
255 } 246 }
256 this.device = device;
257 handle = (red & 0xFF) | ((green & 0xFF) << 8) | ((blue & 0xFF) << 16); 247 handle = (red & 0xFF) | ((green & 0xFF) << 8) | ((blue & 0xFF) << 16);
258 248
259 /* If this is not a palette-based device, return */ 249 /* If this is not a palette-based device, return */
260 auto hPal = device.hPalette; 250 auto hPal = device.hPalette;
261 if (hPal is null) return; 251 if (hPal is null) return;
336 * @param device the device on which to allocate the color 326 * @param device the device on which to allocate the color
337 * @param handle the handle for the color 327 * @param handle the handle for the color
338 * @return a new color object containing the specified device and handle 328 * @return a new color object containing the specified device and handle
339 */ 329 */
340 public static Color win32_new(Device device, int handle) { 330 public static Color win32_new(Device device, int handle) {
341 if (device is null) device = Device.getDevice(); 331 Color color = new Color(device);
342 Color color = new Color();
343 color.handle = handle; 332 color.handle = handle;
344 color.device = device;
345 return color; 333 return color;
346 } 334 }
347 335
348 } 336 }