Sylpheed

/*

 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client

 * Copyright (C) 1999-2009 Hiroyuki Yamamoto

 *

 * 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 <glib.h>

#include <glib/gi18n.h>

#include <gdk/gdkkeysyms.h>

#include <gtk/gtkwidget.h>

#include <gtk/gtkwindow.h>

#include <gtk/gtksignal.h>

#include <gtk/gtkscrolledwindow.h>

#include <gtk/gtktextview.h>

#include <gtk/gtkstyle.h>

#include "logwindow.h"

#include "prefs_common.h"

#include "utils.h"

#include "gtkutils.h"

#include "codeconv.h"

#define TRIM_LINES        25

static LogWindow *logwindow;

#if USE_THREADS

static GThread *main_thread;

#endif

static void log_window_print_func        (const gchar        *str);

static void log_window_message_func        (const gchar        *str);

static void log_window_warning_func        (const gchar        *str);

static void log_window_error_func        (const gchar        *str);

static void hide_cb                (GtkWidget        *widget,

                                 LogWindow        *logwin);

static gboolean key_pressed        (GtkWidget        *widget,

                                 GdkEventKey        *event,

                                 LogWindow        *logwin);

LogWindow *log_window_create(void)

{

        LogWindow *logwin;

        GtkWidget *window;

        GtkWidget *scrolledwin;

        GtkWidget *text;

        GtkTextBuffer *buffer;

        GtkTextIter iter;

        debug_print("Creating log window...\n");

        logwin = g_new0(LogWindow, 1);

        window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

        gtk_window_set_title(GTK_WINDOW(window), _("Protocol log"));

        gtk_window_set_wmclass(GTK_WINDOW(window), "log_window", "Sylpheed");

        gtk_window_set_policy(GTK_WINDOW(window), TRUE, TRUE, FALSE);

        gtk_widget_set_size_request(window, 520, 400);

        g_signal_connect(G_OBJECT(window), "delete_event",

                         G_CALLBACK(gtk_widget_hide_on_delete), NULL);

        g_signal_connect(G_OBJECT(window), "key_press_event",

                         G_CALLBACK(key_pressed), logwin);

        g_signal_connect(G_OBJECT(window), "hide",

                         G_CALLBACK(hide_cb), logwin);

        gtk_widget_realize(window);

        scrolledwin = gtk_scrolled_window_new(NULL, NULL);

        gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),

                                       GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);

        gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolledwin),

                                            GTK_SHADOW_IN);

        gtk_container_add(GTK_CONTAINER(window), scrolledwin);

        gtk_widget_show(scrolledwin);

        text = gtk_text_view_new();

        gtk_text_view_set_editable(GTK_TEXT_VIEW(text), FALSE);

        gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text), GTK_WRAP_WORD);

        buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));

        gtk_text_buffer_get_start_iter(buffer, &iter);

        gtk_text_buffer_create_mark(buffer, "end", &iter, FALSE);

        gtk_container_add(GTK_CONTAINER(scrolledwin), text);

        gtk_widget_show(text);

        logwin->window = window;

        logwin->scrolledwin = scrolledwin;

        logwin->text = text;

        logwin->lines = 1;

#if USE_THREADS

        logwin->aqueue = g_async_queue_new();

        main_thread = g_thread_self();

        debug_print("main_thread = %p\n", main_thread);

#endif

        logwindow = logwin;

        return logwin;

}

void log_window_init(LogWindow *logwin)

{

        GtkTextBuffer *buffer;

        GdkColormap *colormap;

        GdkColor color[3] =

                {{0, 0, 0xafff, 0}, {0, 0xefff, 0, 0}, {0, 0xefff, 0, 0}};

        gboolean success[3];

        gint i;

        logwin->msg_color   = color[0];

        logwin->warn_color  = color[1];

        logwin->error_color = color[2];

        colormap = gdk_window_get_colormap(logwin->window->window);

        gdk_colormap_alloc_colors(colormap, color, 3, FALSE, TRUE, success);

        for (i = 0; i < 3; i++) {

                if (success[i] == FALSE) {

                        GtkStyle *style;

                        g_warning("LogWindow: color allocation failed\n");

                        style = gtk_widget_get_style(logwin->window);

                        logwin->msg_color = logwin->warn_color =

                        logwin->error_color = style->black;

                        break;

                }

        }

        buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(logwin->text));

        gtk_text_buffer_create_tag(buffer, "message",

                                   "foreground-gdk", &logwindow->msg_color,

                                   NULL);

        gtk_text_buffer_create_tag(buffer, "warn",

                                   "foreground-gdk", &logwindow->warn_color,

                                   NULL);

        gtk_text_buffer_create_tag(buffer, "error",

                                   "foreground-gdk", &logwindow->error_color,

                                   NULL);

        set_log_ui_func_full(log_window_print_func, log_window_message_func,

                             log_window_warning_func, log_window_error_func,

                             log_window_flush);

}

void log_window_show(LogWindow *logwin)

{

        GtkTextView *text = GTK_TEXT_VIEW(logwin->text);

        GtkTextBuffer *buffer;

        GtkTextMark *mark;

        buffer = gtk_text_view_get_buffer(text);

        mark = gtk_text_buffer_get_mark(buffer, "end");

        gtk_text_view_scroll_mark_onscreen(text, mark);

        gtk_window_present(GTK_WINDOW(logwin->window));

}

static void log_window_append_real(const gchar *str, LogType type)

{

        GtkTextView *text;

        GtkTextBuffer *buffer;

        GtkTextIter iter;

        GdkColor *color = NULL;

        gchar *head = NULL;

        const gchar *tag;

        gint line_limit = prefs_common.logwin_line_limit;

        g_return_if_fail(logwindow != NULL);

#if USE_THREADS

        if (g_thread_self() != main_thread) {

                g_fprintf(stderr, "log_window_append_real called from non-main thread (%p)\n", g_thread_self());

                return;

        }

#endif

        gdk_threads_enter();

        text = GTK_TEXT_VIEW(logwindow->text);

        buffer = gtk_text_view_get_buffer(text);

        if (line_limit > 0 && logwindow->lines >= line_limit) {

                GtkTextIter start, end;

                gtk_text_buffer_get_start_iter(buffer, &start);

                end = start;

                gtk_text_iter_forward_lines(&end, TRIM_LINES);

                gtk_text_buffer_delete(buffer, &start, &end);

                logwindow->lines = gtk_text_buffer_get_line_count(buffer);

        }

        switch (type) {

        case LOG_MSG:

                color = &logwindow->msg_color;

                tag = "message";

                head = "* ";

                break;

        case LOG_WARN:

                color = &logwindow->warn_color;

                tag = "warn";

                head = "** ";

                break;

        case LOG_ERROR:

                color = &logwindow->error_color;

                tag = "error";

                head = "*** ";

                break;

        default:

                tag = NULL;

                break;

        }

        gtk_text_buffer_get_end_iter(buffer, &iter);

        if (head)

                gtk_text_buffer_insert_with_tags_by_name

                        (buffer, &iter, head, -1, tag, NULL);

        if (!g_utf8_validate(str, -1, NULL)) {

                gchar *str_;

                str_ = conv_utf8todisp(str, NULL);

                if (str_) {

                        gtk_text_buffer_insert_with_tags_by_name

                                (buffer, &iter, str_, -1, tag, NULL);

                        g_free(str_);

                }

        } else {

                gtk_text_buffer_insert_with_tags_by_name

                        (buffer, &iter, str, -1, tag, NULL);

        }

        if (GTK_WIDGET_VISIBLE(text)) {

                GtkTextMark *mark;

                mark = gtk_text_buffer_get_mark(buffer, "end");

                gtk_text_view_scroll_mark_onscreen(text, mark);

        }

        logwindow->lines++;

        gdk_threads_leave();

}

void log_window_append(const gchar *str, LogType type)

{

#if USE_THREADS

        if (g_thread_self() != main_thread) {

                log_window_append_queue(str, type);

                return;

        }

        log_window_flush();

#endif

        log_window_append_real(str, type);

}

typedef struct _LogData

{

        gchar *str;

        LogType type;

} LogData;

void log_window_append_queue(const gchar *str, LogType type)

{

#if USE_THREADS

        LogData *logdata;

        logdata = g_new(LogData, 1);

        logdata->str = g_strdup(str);

        logdata->type = type;

        g_async_queue_push(logwindow->aqueue, logdata);

#endif

}

void log_window_flush(void)

{

#if USE_THREADS

        LogData *logdata;

        if (g_thread_self() != main_thread) {

                g_fprintf(stderr, "log_window_flush called from non-main thread (%p)\n", g_thread_self());

                return;

        }

        while ((logdata = g_async_queue_try_pop(logwindow->aqueue))) {

                log_window_append_real(logdata->str, logdata->type);

                g_free(logdata->str);

                g_free(logdata);

        }

#endif

}

static void log_window_print_func(const gchar *str)

{

        log_window_append(str, LOG_NORMAL);

}

static void log_window_message_func(const gchar *str)

{

        log_window_append(str, LOG_MSG);

}

static void log_window_warning_func(const gchar *str)

{

        log_window_append(str, LOG_WARN);

}

static void log_window_error_func(const gchar *str)

{

        log_window_append(str, LOG_ERROR);

}

static void hide_cb(GtkWidget *widget, LogWindow *logwin)

{

}

static gboolean key_pressed(GtkWidget *widget, GdkEventKey *event,

                            LogWindow *logwin)

{

        if (event && event->keyval == GDK_Escape)

                gtk_widget_hide(logwin->window);

        return FALSE;

}