1 2 /* 3 ******************************************************************************* 4 * 5 * 2016 and later: Unicode, Inc. and others. 6 * License & terms of use: http://www.unicode.org/copyright.html#License 7 * 8 ******************************************************************************* 9 ****************************************************************************** * 10 * 11 * Copyright (C) 1999-2007, International Business Machines 12 * Corporation and others. All Rights Reserved. 13 * 14 ****************************************************************************** * 15 * file name: gnomelayout.cpp 16 * 17 * created on: 09/04/2001 18 * created by: Eric R. Mader 19 */ 20 21 #include <gnome.h> 22 #include <ft2build.h> 23 #include FT_FREETYPE_H 24 25 #include "unicode/ustring.h" 26 #include "unicode/uscript.h" 27 28 #include "GnomeFontInstance.h" 29 30 #include "paragraph.h" 31 32 #include "GnomeGUISupport.h" 33 #include "GnomeFontMap.h" 34 #include "UnicodeReader.h" 35 #include "ScriptCompositeFontInstance.h" 36 37 #define ARRAY_LENGTH(array) (sizeof array / sizeof array[0]) 38 39 struct Context 40 { 41 long width; 42 long height; 43 Paragraph *paragraph; 44 }; 45 46 static FT_Library engine; 47 static GnomeGUISupport *guiSupport; 48 static GnomeFontMap *fontMap; 49 static ScriptCompositeFontInstance *font; 50 51 static GSList *appList = NULL; 52 53 GtkWidget *newSample(const gchar *fileName); 54 void closeSample(GtkWidget *sample); 55 56 void showabout(GtkWidget */*widget*/, gpointer /*data*/) 57 { 58 GtkWidget *aboutBox; 59 const gchar *documentedBy[] = {NULL}; 60 const gchar *writtenBy[] = { 61 "Eric Mader", 62 NULL 63 }; 64 65 aboutBox = gnome_about_new("Gnome Layout Sample", 66 "0.1", 67 "Copyright (C) 1998-2006 By International Business Machines Corporation and others. All Rights Reserved.", 68 "A simple demo of the ICU LayoutEngine.", 69 writtenBy, 70 documentedBy, 71 "", 72 NULL); 73 74 gtk_widget_show(aboutBox); 75 } 76 77 void notimpl(GtkObject */*object*/, gpointer /*data*/) 78 { 79 gnome_ok_dialog("Not implemented..."); 80 } 81 82 gchar *prettyTitle(const gchar *path) 83 { 84 const gchar *name = g_basename(path); 85 gchar *title = g_strconcat("Gnome Layout Sample - ", name, NULL); 86 87 return title; 88 } 89 90 void openOK(GtkObject */*object*/, gpointer data) 91 { 92 GtkFileSelection *fileselection = GTK_FILE_SELECTION(data); 93 GtkWidget *app = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(fileselection), "app")); 94 Context *context = (Context *) gtk_object_get_data(GTK_OBJECT(app), "context"); 95 gchar *fileName = g_strdup(gtk_file_selection_get_filename(fileselection)); 96 Paragraph *newPara; 97 98 gtk_widget_destroy(GTK_WIDGET(fileselection)); 99 100 newPara = Paragraph::paragraphFactory(fileName, font, guiSupport); 101 102 if (newPara != NULL) { 103 gchar *title = prettyTitle(fileName); 104 GtkWidget *area = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(app), "area")); 105 106 if (context->paragraph != NULL) { 107 delete context->paragraph; 108 } 109 110 context->paragraph = newPara; 111 gtk_window_set_title(GTK_WINDOW(app), title); 112 113 gtk_widget_hide(area); 114 context->paragraph->breakLines(context->width, context->height); 115 gtk_widget_show_all(area); 116 117 g_free(title); 118 } 119 120 g_free(fileName); 121 } 122 123 void openfile(GtkObject */*object*/, gpointer data) 124 { 125 GtkWidget *app = GTK_WIDGET(data); 126 GtkWidget *fileselection; 127 GtkWidget *okButton; 128 GtkWidget *cancelButton; 129 130 fileselection = 131 gtk_file_selection_new("Open File"); 132 133 gtk_object_set_data(GTK_OBJECT(fileselection), "app", app); 134 135 okButton = 136 GTK_FILE_SELECTION(fileselection)->ok_button; 137 138 cancelButton = 139 GTK_FILE_SELECTION(fileselection)->cancel_button; 140 141 gtk_signal_connect(GTK_OBJECT(fileselection), "destroy", 142 GTK_SIGNAL_FUNC(gtk_main_quit), NULL); 143 144 gtk_signal_connect(GTK_OBJECT(okButton), "clicked", 145 GTK_SIGNAL_FUNC(openOK), fileselection); 146 147 gtk_signal_connect_object(GTK_OBJECT(cancelButton), "clicked", 148 GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT(fileselection)); 149 150 gtk_window_set_modal(GTK_WINDOW(fileselection), TRUE); 151 gtk_widget_show(fileselection); 152 gtk_main(); 153 } 154 155 void newapp(GtkObject */*object*/, gpointer /*data*/) 156 { 157 GtkWidget *app = newSample("Sample.txt"); 158 159 gtk_widget_show_all(app); 160 } 161 162 void closeapp(GtkWidget */*widget*/, gpointer data) 163 { 164 GtkWidget *app = GTK_WIDGET(data); 165 166 closeSample(app); 167 } 168 169 void shutdown(GtkObject */*object*/, gpointer /*data*/) 170 { 171 gtk_main_quit(); 172 } 173 174 GnomeUIInfo fileMenu[] = 175 { 176 GNOMEUIINFO_MENU_NEW_ITEM((gchar *) "_New Sample", 177 (gchar *) "Create a new Gnome Layout Sample", 178 newapp, NULL), 179 180 GNOMEUIINFO_MENU_OPEN_ITEM(openfile, NULL), 181 GNOMEUIINFO_SEPARATOR, 182 GNOMEUIINFO_MENU_CLOSE_ITEM(closeapp, NULL), 183 GNOMEUIINFO_MENU_EXIT_ITEM(shutdown, NULL), 184 GNOMEUIINFO_END 185 }; 186 187 GnomeUIInfo helpMenu[] = 188 { 189 // GNOMEUIINFO_HELP("gnomelayout"), 190 GNOMEUIINFO_MENU_ABOUT_ITEM(showabout, NULL), 191 GNOMEUIINFO_END 192 }; 193 194 GnomeUIInfo mainMenu[] = 195 { 196 GNOMEUIINFO_SUBTREE(N_((gchar *) "File"), fileMenu), 197 GNOMEUIINFO_SUBTREE(N_((gchar *) "Help"), helpMenu), 198 GNOMEUIINFO_END 199 }; 200 201 gint eventDelete(GtkWidget *widget, GdkEvent */*event*/, gpointer /*data*/) 202 { 203 closeSample(widget); 204 205 // indicate that closeapp already destroyed the window 206 return TRUE; 207 } 208 209 gint eventConfigure(GtkWidget */*widget*/, GdkEventConfigure *event, Context *context) 210 { 211 if (context->paragraph != NULL) { 212 context->width = event->width; 213 context->height = event->height; 214 215 if (context->width > 0 && context->height > 0) { 216 context->paragraph->breakLines(context->width, context->height); 217 } 218 } 219 220 return TRUE; 221 } 222 223 gint eventExpose(GtkWidget *widget, GdkEvent */*event*/, Context *context) 224 { 225 if (context->paragraph != NULL) { 226 gint maxLines = context->paragraph->getLineCount() - 1; 227 gint firstLine = 0, lastLine = context->height / context->paragraph->getLineHeight(); 228 GnomeSurface surface(widget); 229 230 context->paragraph->draw(&surface, firstLine, (maxLines < lastLine)? maxLines : lastLine); 231 } 232 233 return TRUE; 234 } 235 236 GtkWidget *newSample(const gchar *fileName) 237 { 238 Context *context = new Context(); 239 240 context->width = 600; 241 context->height = 400; 242 context->paragraph = Paragraph::paragraphFactory(fileName, font, guiSupport); 243 244 gchar *title = prettyTitle(fileName); 245 GtkWidget *app = gnome_app_new("gnomeLayout", title); 246 247 gtk_object_set_data(GTK_OBJECT(app), "context", context); 248 249 gtk_window_set_default_size(GTK_WINDOW(app), 600 - 24, 400); 250 251 gnome_app_create_menus_with_data(GNOME_APP(app), mainMenu, app); 252 253 gtk_signal_connect(GTK_OBJECT(app), "delete_event", 254 GTK_SIGNAL_FUNC(eventDelete), NULL); 255 256 GtkWidget *area = gtk_drawing_area_new(); 257 gtk_object_set_data(GTK_OBJECT(app), "area", area); 258 259 GtkStyle *style = gtk_style_copy(gtk_widget_get_style(area)); 260 261 for (int i = 0; i < 5; i += 1) { 262 style->fg[i] = style->white; 263 } 264 265 gtk_widget_set_style(area, style); 266 267 gnome_app_set_contents(GNOME_APP(app), area); 268 269 gtk_signal_connect(GTK_OBJECT(area), 270 "expose_event", 271 GTK_SIGNAL_FUNC(eventExpose), 272 context); 273 274 gtk_signal_connect(GTK_OBJECT(area), 275 "configure_event", 276 GTK_SIGNAL_FUNC(eventConfigure), 277 context); 278 279 appList = g_slist_prepend(appList, app); 280 281 g_free(title); 282 283 return app; 284 } 285 286 void closeSample(GtkWidget *app) 287 { 288 Context *context = (Context *) gtk_object_get_data(GTK_OBJECT(app), "context"); 289 290 if (context->paragraph != NULL) { 291 delete context->paragraph; 292 } 293 294 delete context; 295 296 appList = g_slist_remove(appList, app); 297 298 gtk_widget_destroy(app); 299 300 if (appList == NULL) { 301 gtk_main_quit(); 302 } 303 } 304 305 int main (int argc, char *argv[]) 306 { 307 LEErrorCode fontStatus = LE_NO_ERROR; 308 poptContext ptctx; 309 GtkWidget *app; 310 311 FT_Init_FreeType(&engine); 312 313 gnome_init_with_popt_table("gnomelayout", "0.1", argc, argv, NULL, 0, &ptctx); 314 315 guiSupport = new GnomeGUISupport(); 316 fontMap = new GnomeFontMap(engine, "FontMap.Gnome", 24, guiSupport, fontStatus); 317 font = new ScriptCompositeFontInstance(fontMap); 318 319 if (LE_FAILURE(fontStatus)) { 320 FT_Done_FreeType(engine); 321 return 1; 322 } 323 324 const char *defaultArgs[] = {"Sample.txt", NULL}; 325 const char **args = poptGetArgs(ptctx); 326 327 if (args == NULL) { 328 args = defaultArgs; 329 } 330 331 for (int i = 0; args[i] != NULL; i += 1) { 332 app = newSample(args[i]); 333 334 gtk_widget_show_all(app); 335 } 336 337 poptFreeContext(ptctx); 338 339 gtk_main(); 340 341 delete font; 342 delete guiSupport; 343 344 FT_Done_FreeType(engine); 345 346 exit(0); 347 } 348
