Mercurial > projects > dwt-win
annotate dwt/widgets/FontDialog.d @ 246:fd9c62a2998e
Updater SWT 3.4M7 to 3.4
author | Frank Benoit <benoit@tionex.de> |
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date | Tue, 01 Jul 2008 10:15:59 +0200 |
parents | 36f5cb12e1a2 |
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rev | line source |
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1 /******************************************************************************* |
246 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module dwt.widgets.FontDialog; |
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14 |
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15 import dwt.DWT; |
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16 import dwt.DWTException; |
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17 import dwt.graphics.Font; |
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18 import dwt.graphics.FontData; |
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19 import dwt.graphics.PaletteData; |
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20 import dwt.graphics.RGB; |
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21 import dwt.internal.win32.OS; |
76 | 22 |
23 import dwt.widgets.Dialog; | |
24 import dwt.widgets.Shell; | |
25 import dwt.widgets.Display; | |
26 | |
27 import dwt.dwthelper.utils; | |
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28 |
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29 /** |
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30 * Instances of this class allow the user to select a font |
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31 * from all available fonts in the system. |
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32 * <dl> |
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33 * <dt><b>Styles:</b></dt> |
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34 * <dd>(none)</dd> |
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35 * <dt><b>Events:</b></dt> |
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36 * <dd>(none)</dd> |
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37 * </dl> |
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38 * <p> |
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39 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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40 * within the DWT implementation. |
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41 * </p> |
246 | 42 * |
43 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample, Dialog tab</a> | |
44 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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45 */ |
76 | 46 public class FontDialog : Dialog { |
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47 FontData fontData; |
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48 RGB rgb; |
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49 |
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50 /** |
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51 * Constructs a new instance of this class given only its parent. |
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52 * |
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53 * @param parent a shell which will be the parent of the new instance |
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54 * |
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55 * @exception IllegalArgumentException <ul> |
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56 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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57 * </ul> |
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58 * @exception DWTException <ul> |
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59 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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60 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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61 * </ul> |
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62 */ |
76 | 63 public this (Shell parent) { |
213 | 64 this (parent, DWT.APPLICATION_MODAL); |
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65 } |
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66 |
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67 /** |
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68 * Constructs a new instance of this class given its parent |
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69 * and a style value describing its behavior and appearance. |
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70 * <p> |
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71 * The style value is either one of the style constants defined in |
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72 * class <code>DWT</code> which is applicable to instances of this |
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73 * class, or must be built by <em>bitwise OR</em>'ing together |
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74 * (that is, using the <code>int</code> "|" operator) two or more |
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75 * of those <code>DWT</code> style constants. The class description |
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76 * lists the style constants that are applicable to the class. |
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77 * Style bits are also inherited from superclasses. |
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78 * </p> |
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79 * |
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80 * @param parent a shell which will be the parent of the new instance |
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81 * @param style the style of dialog to construct |
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82 * |
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83 * @exception IllegalArgumentException <ul> |
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84 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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85 * </ul> |
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86 * @exception DWTException <ul> |
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87 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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88 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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89 * </ul> |
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90 */ |
76 | 91 public this (Shell parent, int style) { |
213 | 92 super (parent, checkStyle (parent, style)); |
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93 checkSubclass (); |
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94 } |
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95 |
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96 /** |
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97 * Returns a FontData object describing the font that was |
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98 * selected in the dialog, or null if none is available. |
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99 * |
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100 * @return the FontData for the selected font, or null |
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101 * @deprecated use #getFontList () |
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102 */ |
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103 public FontData getFontData () { |
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104 return fontData; |
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105 } |
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106 |
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107 /** |
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108 * Returns a FontData set describing the font that was |
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109 * selected in the dialog, or null if none is available. |
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110 * |
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111 * @return the FontData for the selected font, or null |
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112 * @since 2.1.1 |
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113 */ |
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114 public FontData [] getFontList () { |
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115 if (fontData is null) return null; |
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116 FontData [] result = new FontData [1]; |
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117 result [0] = fontData; |
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118 return result; |
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119 } |
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120 |
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121 /** |
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122 * Returns an RGB describing the color that was selected |
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123 * in the dialog, or null if none is available. |
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124 * |
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125 * @return the RGB value for the selected color, or null |
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126 * |
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127 * @see PaletteData#getRGBs |
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128 * |
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129 * @since 2.1 |
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130 */ |
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131 public RGB getRGB () { |
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132 return rgb; |
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133 } |
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134 |
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135 /** |
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136 * Makes the dialog visible and brings it to the front |
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137 * of the display. |
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138 * |
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139 * @return a FontData object describing the font that was selected, |
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140 * or null if the dialog was cancelled or an error occurred |
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141 * |
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142 * @exception DWTException <ul> |
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143 * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li> |
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144 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li> |
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145 * </ul> |
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146 */ |
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147 public FontData open () { |
117 | 148 static if (OS.IsWinCE) DWT.error (DWT.ERROR_NOT_IMPLEMENTED); |
31
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149 |
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150 /* Get the owner HWND for the dialog */ |
213 | 151 HWND hwndOwner = parent.handle; |
152 auto hwndParent = parent.handle; | |
153 | |
154 /* | |
155 * Feature in Windows. There is no API to set the orientation of a | |
156 * font dialog. It is always inherited from the parent. The fix is | |
157 * to create a hidden parent and set the orientation in the hidden | |
158 * parent for the dialog to inherit. | |
159 */ | |
160 bool enabled = false; | |
161 if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) { | |
162 int dialogOrientation = style & (DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT); | |
163 int parentOrientation = parent.style & (DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT); | |
164 if (dialogOrientation !is parentOrientation) { | |
165 int exStyle = OS.WS_EX_NOINHERITLAYOUT; | |
166 if (dialogOrientation is DWT.RIGHT_TO_LEFT) exStyle |= OS.WS_EX_LAYOUTRTL; | |
167 hwndOwner = OS.CreateWindowEx ( | |
168 exStyle, | |
169 Shell.DialogClass.ptr, | |
170 null, | |
171 0, | |
172 OS.CW_USEDEFAULT, 0, OS.CW_USEDEFAULT, 0, | |
173 hwndParent, | |
174 null, | |
175 OS.GetModuleHandle (null), | |
176 null); | |
177 enabled = OS.IsWindowEnabled (hwndParent) !is 0; | |
178 if (enabled) OS.EnableWindow (hwndParent, false); | |
179 } | |
180 } | |
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181 |
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182 /* Open the dialog */ |
76 | 183 auto hHeap = OS.GetProcessHeap (); |
184 CHOOSEFONT lpcf; | |
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185 lpcf.lStructSize = CHOOSEFONT.sizeof; |
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186 lpcf.hwndOwner = hwndOwner; |
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187 lpcf.Flags = OS.CF_SCREENFONTS | OS.CF_EFFECTS; |
76 | 188 auto lpLogFont = cast(LOGFONT*) OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, LOGFONT.sizeof); |
189 if (fontData !is null /+&& fontData.data !is null+/) { | |
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190 LOGFONT logFont = fontData.data; |
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191 int lfHeight = logFont.lfHeight; |
76 | 192 auto hDC = OS.GetDC (null); |
193 int pixels = -cast(int)(0.5f + (fontData.height * OS.GetDeviceCaps(hDC, OS.LOGPIXELSY) / 72)); | |
194 OS.ReleaseDC (null, hDC); | |
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195 logFont.lfHeight = pixels; |
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196 lpcf.Flags |= OS.CF_INITTOLOGFONTSTRUCT; |
76 | 197 OS.MoveMemory (lpLogFont, &logFont, LOGFONT.sizeof); |
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198 logFont.lfHeight = lfHeight; |
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199 } |
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200 lpcf.lpLogFont = lpLogFont; |
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201 if (rgb !is null) { |
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202 int red = rgb.red & 0xFF; |
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203 int green = (rgb.green << 8) & 0xFF00; |
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204 int blue = (rgb.blue << 16) & 0xFF0000; |
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205 lpcf.rgbColors = red | green | blue; |
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206 } |
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207 |
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208 /* Make the parent shell be temporary modal */ |
213 | 209 Dialog oldModal = null; |
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210 Display display = null; |
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211 if ((style & (DWT.APPLICATION_MODAL | DWT.SYSTEM_MODAL)) !is 0) { |
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212 display = parent.getDisplay (); |
213 | 213 oldModal = display.getModalDialog (); |
214 display.setModalDialog (this); | |
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215 } |
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216 |
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217 /* Open the dialog */ |
76 | 218 bool success = cast(bool) OS.ChooseFont (&lpcf); |
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219 |
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220 /* Clear the temporary dialog modal parent */ |
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221 if ((style & (DWT.APPLICATION_MODAL | DWT.SYSTEM_MODAL)) !is 0) { |
213 | 222 display.setModalDialog (oldModal); |
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223 } |
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224 |
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225 /* Compute the result */ |
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226 if (success) { |
76 | 227 LOGFONT* logFont = lpLogFont; |
228 //OS.MoveMemory (logFont, lpLogFont, LOGFONT.sizeof); | |
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229 |
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230 /* |
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231 * This will not work on multiple screens or |
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232 * for printing. Should use DC for the proper device. |
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233 */ |
76 | 234 auto hDC = OS.GetDC(null); |
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235 int logPixelsY = OS.GetDeviceCaps(hDC, OS.LOGPIXELSY); |
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236 int pixels = 0; |
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237 if (logFont.lfHeight > 0) { |
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238 /* |
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239 * Feature in Windows. If the lfHeight of the LOGFONT structure |
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240 * is positive, the lfHeight measures the height of the entire |
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241 * cell, including internal leading, in logical units. Since the |
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242 * height of a font in points does not include the internal leading, |
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243 * we must subtract the internal leading, which requires a TEXTMETRIC, |
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244 * which in turn requires font creation. |
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245 */ |
76 | 246 auto hFont = OS.CreateFontIndirect(logFont); |
247 auto oldFont = OS.SelectObject(hDC, hFont); | |
248 TEXTMETRIC lptm ; | |
249 OS.GetTextMetrics(hDC, &lptm); | |
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250 OS.SelectObject(hDC, oldFont); |
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251 OS.DeleteObject(hFont); |
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252 pixels = logFont.lfHeight - lptm.tmInternalLeading; |
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253 } else { |
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254 pixels = -logFont.lfHeight; |
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255 } |
76 | 256 OS.ReleaseDC(null, hDC); |
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257 |
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258 float points = pixels * 72f /logPixelsY; |
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259 fontData = FontData.win32_new (logFont, points); |
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260 int red = lpcf.rgbColors & 0xFF; |
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261 int green = (lpcf.rgbColors >> 8) & 0xFF; |
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262 int blue = (lpcf.rgbColors >> 16) & 0xFF; |
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263 rgb = new RGB (red, green, blue); |
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264 } |
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265 |
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266 /* Free the OS memory */ |
76 | 267 if (lpLogFont !is null) OS.HeapFree (hHeap, 0, lpLogFont); |
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268 |
213 | 269 /* Destroy the BIDI orientation window */ |
270 if (hwndParent !is hwndOwner) { | |
271 if (enabled) OS.EnableWindow (hwndParent, true); | |
272 OS.SetActiveWindow (hwndParent); | |
273 OS.DestroyWindow (hwndOwner); | |
274 } | |
275 | |
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276 /* |
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277 * This code is intentionally commented. On some |
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278 * platforms, the owner window is repainted right |
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279 * away when a dialog window exits. This behavior |
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280 * is currently unspecified. |
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281 */ |
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282 // if (hwndOwner !is 0) OS.UpdateWindow (hwndOwner); |
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283 |
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284 if (!success) return null; |
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285 return fontData; |
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286 } |
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287 |
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288 /** |
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289 * Sets a FontData object describing the font to be |
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290 * selected by default in the dialog, or null to let |
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291 * the platform choose one. |
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292 * |
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293 * @param fontData the FontData to use initially, or null |
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294 * @deprecated use #setFontList (FontData []) |
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295 */ |
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296 public void setFontData (FontData fontData) { |
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297 this.fontData = fontData; |
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298 } |
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299 |
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300 /** |
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301 * Sets the set of FontData objects describing the font to |
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302 * be selected by default in the dialog, or null to let |
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303 * the platform choose one. |
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304 * |
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305 * @param fontData the set of FontData objects to use initially, or null |
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306 * to let the platform select a default when open() is called |
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307 * |
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308 * @see Font#getFontData |
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309 * |
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310 * @since 2.1.1 |
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311 */ |
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312 public void setFontList (FontData [] fontData) { |
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313 if (fontData !is null && fontData.length > 0) { |
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314 this.fontData = fontData [0]; |
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315 } else { |
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316 this.fontData = null; |
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317 } |
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318 } |
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319 |
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320 /** |
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321 * Sets the RGB describing the color to be selected by default |
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322 * in the dialog, or null to let the platform choose one. |
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323 * |
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324 * @param rgb the RGB value to use initially, or null to let |
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325 * the platform select a default when open() is called |
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326 * |
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327 * @see PaletteData#getRGBs |
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328 * |
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329 * @since 2.1 |
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330 */ |
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331 public void setRGB (RGB rgb) { |
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332 this.rgb = rgb; |
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333 } |
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334 |
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335 } |
76 | 336 |