/* font_utils.c * Utilities to use for font manipulation * * $Id$ * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #ifdef _WIN32 #include #include #include #endif #include "../simple_dialog.h" #include "gtk/main.h" #include "gtk/recent.h" #include "gtk/gtkglobals.h" #include "gtk/font_utils.h" #include "gtk/main_packet_list.h" #include "gtk/main_proto_draw.h" #include "gtk/follow_tcp.h" PangoFontDescription *m_r_font, *m_b_font; /* Get the regular user font. * * @return the regular user font */ PangoFontDescription *user_font_get_regular(void) { return m_r_font; } /* Get the bold user font. * * @return the bold user font */ PangoFontDescription *user_font_get_bold(void) { return m_b_font; } static void set_fonts(PangoFontDescription *regular, PangoFontDescription *bold) { /* Yes, assert. The code that loads the font should check * for NULL and provide its own error message. */ g_assert(m_r_font && m_b_font); m_r_font = regular; m_b_font = bold; } void view_zoom_in_cb(GtkWidget *w _U_, gpointer d _U_) { gint save_gui_zoom_level; save_gui_zoom_level = recent.gui_zoom_level; recent.gui_zoom_level++; switch (user_font_apply(FALSE)) { case FA_SUCCESS: break; case FA_FONT_NOT_RESIZEABLE: /* "font_apply()" popped up an alert box. */ recent.gui_zoom_level = save_gui_zoom_level; /* undo zoom */ break; case FA_FONT_NOT_AVAILABLE: /* We assume this means that the specified size isn't available. */ simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "Your current font isn't available in the next larger size.\n"); recent.gui_zoom_level = save_gui_zoom_level; /* undo zoom */ break; } } void view_zoom_out_cb(GtkWidget *w _U_, gpointer d _U_) { gint save_gui_zoom_level; save_gui_zoom_level = recent.gui_zoom_level; recent.gui_zoom_level--; switch (user_font_apply(FALSE)) { case FA_SUCCESS: break; case FA_FONT_NOT_RESIZEABLE: /* "font_apply()" popped up an alert box. */ recent.gui_zoom_level = save_gui_zoom_level; /* undo zoom */ break; case FA_FONT_NOT_AVAILABLE: /* We assume this means that the specified size isn't available. */ simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "Your current font isn't available in the next smaller size.\n"); recent.gui_zoom_level = save_gui_zoom_level; /* undo zoom */ break; } } void view_zoom_100_cb(GtkWidget *w _U_, gpointer d _U_) { gint save_gui_zoom_level; save_gui_zoom_level = recent.gui_zoom_level; recent.gui_zoom_level = 0; switch (user_font_apply(FALSE)) { case FA_SUCCESS: break; case FA_FONT_NOT_RESIZEABLE: /* "font_apply()" popped up an alert box. */ recent.gui_zoom_level = save_gui_zoom_level; /* undo zoom */ break; case FA_FONT_NOT_AVAILABLE: /* We assume this means that the specified size isn't available. XXX - this "shouldn't happen". */ simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "Your current font couldn't be reloaded at the size you selected.\n"); recent.gui_zoom_level = save_gui_zoom_level; /* undo zoom */ break; } } gboolean user_font_test(gchar *font_name) { PangoFontDescription *new_r_font, *new_b_font; new_r_font = pango_font_description_from_string(font_name); if (new_r_font == NULL) { /* Oops, that font didn't work. Tell the user, but don't tear down the font selection dialog, so that they can try again. */ simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "The font you selected can't be loaded."); return FALSE; } new_b_font = pango_font_description_copy(new_r_font); pango_font_description_set_weight(new_b_font, PANGO_WEIGHT_BOLD); if (new_b_font == NULL) { /* Oops, that font didn't work. Tell the user, but don't tear down the font selection dialog, so that they can try again. */ simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "The font you selected doesn't have a boldface version."); pango_font_description_free(new_r_font); return FALSE; } return TRUE; } /* Given a font name, construct the name of a version of that font with the current zoom factor applied. */ static char * font_zoom(char *gui_font_name) { char *new_font_name; char *font_name_dup; char *font_name_p; long font_point_size_l; if (recent.gui_zoom_level == 0) { /* There is no zoom factor - just return the name, so that if this is GTK+ 1.2[.x] and the font name isn't an XLFD font name, we don't fail. */ return g_strdup(gui_font_name); } font_name_dup = g_strdup(gui_font_name); font_name_p = font_name_dup; /* find the start of the font_size string */ font_name_p = strrchr(font_name_dup, ' '); *font_name_p = '\0'; font_name_p++; /* calculate the new font size */ font_point_size_l = strtol(font_name_p, NULL, 10); font_point_size_l += recent.gui_zoom_level; /* build a new font name */ new_font_name = g_strdup_printf("%s %ld", font_name_dup, font_point_size_l); g_free(font_name_dup); return new_font_name; } fa_ret_t user_font_apply(gboolean saved_column_width) { char *gui_font_name; PangoFontDescription *new_r_font, *new_b_font; PangoFontDescription *old_r_font = NULL, *old_b_font = NULL; /* convert font name to reflect the zoom level */ gui_font_name = font_zoom(prefs.gui_font_name); if (gui_font_name == NULL) { /* * This means the font name isn't an XLFD font name. * We just report that for now as a font not available in * multiple sizes. */ simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "Your current font isn't available in any other sizes.\n"); return FA_FONT_NOT_RESIZEABLE; } /* load normal and bold font */ new_r_font = pango_font_description_from_string(gui_font_name); new_b_font = pango_font_description_copy(new_r_font); pango_font_description_set_weight(new_b_font, PANGO_WEIGHT_BOLD); if (new_r_font == NULL || new_b_font == NULL) { /* We're no longer using the new fonts; unreference them. */ if (new_r_font != NULL) pango_font_description_free(new_r_font); if (new_b_font != NULL) pango_font_description_free(new_b_font); g_free(gui_font_name); /* We let our caller pop up a dialog box, as the error message depends on the context (did they zoom in or out, or did they do something else? */ return FA_FONT_NOT_AVAILABLE; } /* the font(s) seem to be ok */ packet_list_set_font(new_r_font, saved_column_width); set_ptree_font_all(new_r_font); old_r_font = m_r_font; old_b_font = m_b_font; set_fonts(new_r_font, new_b_font); /* Redraw the hex dump windows. */ redraw_hex_dump_all(); /* Redraw the "Follow TCP Stream" windows. */ follow_tcp_redraw_all(); /* We're no longer using the old fonts; unreference them. */ if (old_r_font != NULL) pango_font_description_free(old_r_font); if (old_b_font != NULL) pango_font_description_free(old_b_font); g_free(gui_font_name); return FA_SUCCESS; } #ifdef _WIN32 #define NAME_BUFFER_LEN 32 static char appfontname[128] = "tahoma 8"; static void set_app_font_gtk2(const char *fontname) { GtkSettings *settings; if (fontname != NULL && *fontname == 0) return; settings = gtk_settings_get_default(); if (fontname == NULL) { g_object_set(G_OBJECT(settings), "gtk-font-name", appfontname, NULL); } else { GtkWidget *w; PangoFontDescription *pfd; PangoContext *pc; PangoFont *pfont; w = gtk_label_new(NULL); pfd = pango_font_description_from_string(fontname); pc = gtk_widget_get_pango_context(w); pfont = pango_context_load_font(pc, pfd); if (pfont != NULL) { g_strlcpy(appfontname, fontname, 128); appfontname[127] = '\0'; g_object_set(G_OBJECT(settings), "gtk-font-name", appfontname, NULL); } gtk_widget_destroy(w); pango_font_description_free(pfd); } } static char *default_windows_menu_fontspec_gtk2(void) { gchar *fontspec = NULL; NONCLIENTMETRICS ncm; memset(&ncm, 0, sizeof ncm); ncm.cbSize = sizeof ncm; if (SystemParametersInfo(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0)) { HDC screen = GetDC(0); double y_scale = 72.0 / GetDeviceCaps(screen, LOGPIXELSY); int point_size = (int) (ncm.lfMenuFont.lfHeight * y_scale); if (point_size < 0) point_size = -point_size; fontspec = g_strdup_printf("%s %d", ncm.lfMenuFont.lfFaceName, point_size); ReleaseDC(0, screen); } return fontspec; } static void try_to_get_windows_font_gtk2(void) { gchar *fontspec; fontspec = default_windows_menu_fontspec_gtk2(); if (fontspec != NULL) { int match = 0; PangoFontDescription *pfd; PangoFont *pfont; PangoContext *pc; GtkWidget *w; pfd = pango_font_description_from_string(fontspec); w = gtk_label_new(NULL); pc = gtk_widget_get_pango_context(w); pfont = pango_context_load_font(pc, pfd); match = (pfont != NULL); pango_font_description_free(pfd); g_object_unref(G_OBJECT(pc)); gtk_widget_destroy(w); if (match) set_app_font_gtk2(fontspec); g_free(fontspec); } } #endif /* _WIN32 */ void font_init(void) { #ifdef _WIN32 /* try to load the application font for GTK2 */ try_to_get_windows_font_gtk2(); #endif /* Try to load the regular and boldface fixed-width fonts */ m_r_font = pango_font_description_from_string(prefs.gui_font_name); m_b_font = pango_font_description_copy(m_r_font); pango_font_description_set_weight(m_b_font, PANGO_WEIGHT_BOLD); if (m_r_font == NULL || m_b_font == NULL) { /* XXX - pop this up as a dialog box? no */ if (m_r_font == NULL) { fprintf(stderr, "wireshark: Warning: font %s not found - defaulting to Monospace 9\n", prefs.gui_font_name); } else { pango_font_description_free(m_r_font); } if (m_b_font == NULL) { fprintf(stderr, "wireshark: Warning: bold font %s not found - defaulting" " to Monospace 9\n", prefs.gui_font_name); } else { pango_font_description_free(m_b_font); } if ((m_r_font = pango_font_description_from_string("Monospace 9")) == NULL) { fprintf(stderr, "wireshark: Error: font Monospace 9 not found\n"); exit(1); } if ((m_b_font = pango_font_description_copy(m_r_font)) == NULL) { fprintf(stderr, "wireshark: Error: font Monospace 9 bold not found\n"); exit(1); } g_free(prefs.gui_font_name); pango_font_description_set_weight(m_b_font, PANGO_WEIGHT_BOLD); prefs.gui_font_name = g_strdup("Monospace 9"); } /* Call this for the side-effects that set_fonts() produces */ set_fonts(m_r_font, m_b_font); }