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