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EDIT :: cgnomelayout.c

/* ******************************************************************************* * * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html * ******************************************************************************* ****************************************************************************** * * * Copyright (C) 1999-2007, International Business Machines * Corporation and others. All Rights Reserved. * ****************************************************************************** * */ #include <stdbool.h> #include <gnome.h> #include <ft2build.h> #include FT_FREETYPE_H #include "pflow.h" #include "gnomeglue.h" #include "arraymem.h" struct Context { long width; long height; pf_flow *paragraph; }; typedef struct Context Context; static FT_Library engine; static gs_guiSupport *guiSupport; static fm_fontMap *fontMap; static le_font *font; static GSList *appList = NULL; GtkWidget *newSample(const gchar *fileName); void closeSample(GtkWidget *sample); static void showabout(GtkWidget *widget, gpointer data) { GtkWidget *aboutBox; const gchar *documentedBy[] = {NULL}; const gchar *writtenBy[] = { "Eric Mader", NULL }; aboutBox = gnome_about_new("Gnome Layout Sample", "0.1", "Copyright (C) 1998-2006 By International Business Machines Corporation and others. All Rights Reserved.", "A simple demo of the ICU LayoutEngine.", writtenBy, documentedBy, "", NULL); gtk_widget_show(aboutBox); } #if 0 static void notimpl(GtkObject *object, gpointer data) { gnome_ok_dialog("Not implemented..."); } #endif static gchar *prettyTitle(const gchar *path) { const gchar *name = g_basename(path); gchar *title = g_strconcat("Gnome Layout Sample - ", name, NULL); return title; } static void openOK(GtkObject *object, gpointer data) { GtkFileSelection *fileselection = GTK_FILE_SELECTION(data); GtkWidget *app = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(fileselection), "app")); Context *context = (Context *) gtk_object_get_data(GTK_OBJECT(app), "context"); gchar *fileName = g_strdup(gtk_file_selection_get_filename(fileselection)); pf_flow *newPara; gtk_widget_destroy(GTK_WIDGET(fileselection)); newPara = pf_factory(fileName, font, guiSupport); if (newPara != NULL) { gchar *title = prettyTitle(fileName); GtkWidget *area = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(app), "area")); if (context->paragraph != NULL) { pf_close(context->paragraph); } context->paragraph = newPara; gtk_window_set_title(GTK_WINDOW(app), title); gtk_widget_hide(area); pf_breakLines(context->paragraph, context->width, context->height); gtk_widget_show_all(area); g_free(title); } g_free(fileName); } static void openfile(GtkObject *object, gpointer data) { GtkWidget *app = GTK_WIDGET(data); GtkWidget *fileselection; GtkWidget *okButton; GtkWidget *cancelButton; fileselection = gtk_file_selection_new("Open File"); gtk_object_set_data(GTK_OBJECT(fileselection), "app", app); okButton = GTK_FILE_SELECTION(fileselection)->ok_button; cancelButton = GTK_FILE_SELECTION(fileselection)->cancel_button; gtk_signal_connect(GTK_OBJECT(fileselection), "destroy", GTK_SIGNAL_FUNC(gtk_main_quit), NULL); gtk_signal_connect(GTK_OBJECT(okButton), "clicked", GTK_SIGNAL_FUNC(openOK), fileselection); gtk_signal_connect_object(GTK_OBJECT(cancelButton), "clicked", GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT(fileselection)); gtk_window_set_modal(GTK_WINDOW(fileselection), true); gtk_widget_show(fileselection); gtk_main(); } static void newapp(GtkObject *object, gpointer data) { GtkWidget *app = newSample("Sample.txt"); gtk_widget_show_all(app); } static void closeapp(GtkWidget *widget, gpointer data) { GtkWidget *app = GTK_WIDGET(data); closeSample(app); } static void shutdown(GtkObject *object, gpointer data) { gtk_main_quit(); } GnomeUIInfo fileMenu[] = { GNOMEUIINFO_MENU_NEW_ITEM((gchar *) "_New Sample", (gchar *) "Create a new Gnome Layout Sample", newapp, NULL), GNOMEUIINFO_MENU_OPEN_ITEM(openfile, NULL), GNOMEUIINFO_SEPARATOR, GNOMEUIINFO_MENU_CLOSE_ITEM(closeapp, NULL), GNOMEUIINFO_MENU_EXIT_ITEM(shutdown, NULL), GNOMEUIINFO_END }; GnomeUIInfo helpMenu[] = { /* GNOMEUIINFO_HELP("gnomelayout"), */ GNOMEUIINFO_MENU_ABOUT_ITEM(showabout, NULL), GNOMEUIINFO_END }; GnomeUIInfo mainMenu[] = { GNOMEUIINFO_SUBTREE(N_((gchar *) "File"), fileMenu), GNOMEUIINFO_SUBTREE(N_((gchar *) "Help"), helpMenu), GNOMEUIINFO_END }; static gint eventDelete(GtkWidget *widget, GdkEvent *event, gpointer data) { closeSample(widget); /* indicate that closeapp already destroyed the window */ return true; } static gint eventConfigure(GtkWidget *widget, GdkEventConfigure *event, Context *context) { if (context->paragraph != NULL) { context->width = event->width; context->height = event->height; if (context->width > 0 && context->height > 0) { pf_breakLines(context->paragraph, context->width, context->height); } } return true; } static gint eventExpose(GtkWidget *widget, GdkEvent *event, Context *context) { if (context->paragraph != NULL) { gint maxLines = pf_getLineCount(context->paragraph) - 1; gint firstLine = 0, lastLine = context->height / pf_getLineHeight(context->paragraph); rs_surface *surface = rs_gnomeRenderingSurfaceOpen(widget); pf_draw(context->paragraph, surface, firstLine, (maxLines < lastLine)? maxLines : lastLine); rs_gnomeRenderingSurfaceClose(surface); } return true; } GtkWidget *newSample(const gchar *fileName) { Context *context = NEW_ARRAY(Context, 1); gchar *title; GtkWidget *app; GtkWidget *area; GtkStyle *style; int i; context->width = 600; context->height = 400; context->paragraph = pf_factory(fileName, font, guiSupport); title = prettyTitle(fileName); app = gnome_app_new("gnomeLayout", title); gtk_object_set_data(GTK_OBJECT(app), "context", context); gtk_window_set_default_size(GTK_WINDOW(app), 600 - 24, 400); gnome_app_create_menus_with_data(GNOME_APP(app), mainMenu, app); gtk_signal_connect(GTK_OBJECT(app), "delete_event", GTK_SIGNAL_FUNC(eventDelete), NULL); area = gtk_drawing_area_new(); gtk_object_set_data(GTK_OBJECT(app), "area", area); style = gtk_style_copy(gtk_widget_get_style(area)); for (i = 0; i < 5; i += 1) { style->fg[i] = style->white; } gtk_widget_set_style(area, style); gnome_app_set_contents(GNOME_APP(app), area); gtk_signal_connect(GTK_OBJECT(area), "expose_event", GTK_SIGNAL_FUNC(eventExpose), context); gtk_signal_connect(GTK_OBJECT(area), "configure_event", GTK_SIGNAL_FUNC(eventConfigure), context); appList = g_slist_prepend(appList, app); g_free(title); return app; } void closeSample(GtkWidget *app) { Context *context = (Context *) gtk_object_get_data(GTK_OBJECT(app), "context"); if (context->paragraph != NULL) { pf_close(context->paragraph); } DELETE_ARRAY(context); appList = g_slist_remove(appList, app); gtk_widget_destroy(app); if (appList == NULL) { gtk_main_quit(); } } int main (int argc, char *argv[]) { LEErrorCode fontStatus = LE_NO_ERROR; poptContext ptctx; GtkWidget *app; const char *defaultArgs[] = {"Sample.txt", NULL}; const char **args; int i; FT_Init_FreeType(&engine); gnome_init_with_popt_table("gnomelayout", "0.1", argc, argv, NULL, 0, &ptctx); guiSupport = gs_gnomeGuiSupportOpen(); fontMap = fm_gnomeFontMapOpen(engine, "FontMap.Gnome", 24, guiSupport, &fontStatus); font = le_scriptCompositeFontOpen(fontMap); if (LE_FAILURE(fontStatus)) { FT_Done_FreeType(engine); return 1; } args = poptGetArgs(ptctx); if (args == NULL) { args = defaultArgs; } for (i = 0; args[i] != NULL; i += 1) { app = newSample(args[i]); gtk_widget_show_all(app); } poptFreeContext(ptctx); gtk_main(); le_fontClose(font); gs_gnomeGuiSupportClose(guiSupport); FT_Done_FreeType(engine); exit(0); }

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