Move gtk to ui/gtk.

This looses the last checkin to gtk, will add this manually back.

svn path=/trunk/; revision=40518

1 files changed, 431 insertions, 0 deletions

diff --git a/ui/gtk/font_utils.c b/ui/gtk/font_utils.c
new file mode 100644
index 0000000000..693087ed44
--- /dev/null
+++ b/ui/gtk/font_utils.c
@@ -0,0 +1,431 @@
+/* font_utils.c
+ * Utilities to use for font manipulation
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * 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 <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <gtk/gtk.h>
+
+#include <epan/packet.h>
+#include <epan/prefs.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#include <tchar.h>
+#include <wsutil/unicode-utils.h>
+#endif
+
+#include "../simple_dialog.h"
+
+#include "ui/gtk/main.h"
+#include "ui/gtk/recent.h"
+#include "ui/gtk/gtkglobals.h"
+#include "ui/gtk/font_utils.h"
+#include "ui/gtk/main_proto_draw.h"
+#include "ui/gtk/follow_tcp.h"
+#include "ui/gtk/new_packet_list.h"
+
+
+static 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()) {
+
+    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()) {
+
+    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()) {
+
+    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);
+
+    /* 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(void) {
+    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 */
+    new_packet_list_set_font(new_r_font);
+    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 packet bytes windows. */
+    redraw_packet_bytes_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);
+}