gseisviewtoolhlight.c

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    }

    if (1 == event->button && FALSE == private->drawing_rubberband &&
        GDK_BUTTON_RELEASE == event->type) {
        gtk_seis_view_gl_set_highlight_area (GTK_SEIS_VIEW_GL (seis_view_gl), data_visibility->slow_pointer_pos_data, 0.0);
        gtk_seis_view_gl_redraw (seis_view);
    }
}

static void g_seis_view_tool_scroll_event_int (GSeisViewTool *tool, GtkWidget *seis_view_gl, GdkEventScroll *event,
                                               GSeisViewDataVisibility *data_visibility) {
    GSeisViewToolHighlightPrivate *private = G_SEIS_VIEW_TOOL_HIGHLIGHT_GET_PRIVATE (G_SEIS_VIEW_TOOL (tool));

    if (FALSE == private->drawing_rubberband) {
        if (GDK_SCROLL_UP == event->direction)
            g_idle_add ((GSourceFunc)g_seis_view_tool_highlight_scroll_up_signal, (gpointer)G_SEIS_VIEW_TOOL_HIGHLIGHT (tool));
        else if (GDK_SCROLL_DOWN == event->direction)
            g_idle_add ((GSourceFunc)g_seis_view_tool_highlight_scroll_down_signal, (gpointer)G_SEIS_VIEW_TOOL_HIGHLIGHT (tool));
    }
}

static void g_seis_view_tool_motion_event_int (GSeisViewTool *tool, GtkWidget *seis_view_gl, GdkEventMotion *event,
                                               GSeisViewDataVisibility *data_visibility) {
    GSeisViewToolHighlightPrivate *private = G_SEIS_VIEW_TOOL_HIGHLIGHT_GET_PRIVATE (G_SEIS_VIEW_TOOL (tool));
    GdkGLContext *gl_context = gtk_widget_get_gl_context (seis_view_gl);
    GdkGLDrawable *gl_drawable = gtk_widget_get_gl_drawable (seis_view_gl);

    if (private->drawing_rubberband) {
        if (private->is_threaded)
            gdk_threads_enter ();
        if (gdk_gl_drawable_gl_begin (gl_drawable, gl_context)) {

            glDrawBuffer (GL_FRONT);
            glEnable (GL_COLOR_LOGIC_OP);
            glLogicOp (GL_XOR);

            glColor3f (1, 1, 1);

            if (private->rubberband_is_drawn) {
                glBegin (GL_LINE_STRIP);
                glVertex2f (private->rubberband_slow_start_object, private->rubberband_fast_start_object);
                glVertex2f (private->rubberband_slow_end_object, private->rubberband_fast_end_object);
                glEnd ();
            }

            private->hlight_area_end = data_visibility->slow_pointer_pos_data;

            private->rubberband_slow_end_object = data_visibility->slow_pointer_pos_object;
            private->rubberband_fast_end_object = data_visibility->fast_pointer_pos_object;

            glBegin (GL_LINE_STRIP);
            glVertex2f (private->rubberband_slow_start_object, private->rubberband_fast_start_object);
            glVertex2f (private->rubberband_slow_end_object, private->rubberband_fast_end_object);
            glEnd ();

            glLogicOp (GL_SET);
            glDisable (GL_COLOR_LOGIC_OP);
            glDrawBuffer (GL_BACK);
            glFlush ();
            gdk_gl_drawable_gl_end (gl_drawable);

            private->rubberband_is_drawn = TRUE;
        }
        if (private->is_threaded)
            gdk_threads_leave ();
    }
}

void g_seis_view_tool_highlight_set_rubberband_selection (GSeisViewToolHighlight *self, gboolean on) {
    GSeisViewToolHighlightPrivate *private = G_SEIS_VIEW_TOOL_HIGHLIGHT_GET_PRIVATE (self);

    if (private->data_mutex)
        g_mutex_lock (private->data_mutex);

    private->rubberband_selection = on;

    g_idle_add ((GSourceFunc)g_seis_view_tool_highlight_rb_selection_notify_signal, (gpointer)self);

    if (private->data_mutex)
        g_mutex_unlock (private->data_mutex);
}

static void g_seis_view_tool_highlight_init (GSeisViewToolHighlight *self) {
    GSeisViewToolHighlightPrivate *private = G_SEIS_VIEW_TOOL_HIGHLIGHT_GET_PRIVATE (self);

    (G_SEIS_VIEW_TOOL (self))->event_mask |= G_SEIS_VIEW_TOOL_MOTION_EVENT |
                                             G_SEIS_VIEW_TOOL_BUTTON_EVENT |
                                             G_SEIS_VIEW_TOOL_SCROLL_EVENT;

    (G_SEIS_VIEW_TOOL (self))->show_cross = TRUE;

    private->drawing_rubberband = FALSE;
    private->rubberband_is_drawn = FALSE;
    private->cursor_window = NULL;

    private->hand1_cursor = gdk_cursor_new (GDK_HAND1);
    private->hand2_cursor = gdk_cursor_new (GDK_HAND2);

    private->is_threaded = FALSE;
    private->data_mutex = NULL;

    private->rubberband_selection = TRUE;

#ifdef DEBUG
    g_print ("<GSeisViewToolHighlight is inited>\n");
#endif
}

static void g_seis_view_tool_highlight_finalize (GObject *object) {
    GSeisViewToolHighlightPrivate *private = G_SEIS_VIEW_TOOL_HIGHLIGHT_GET_PRIVATE (G_SEIS_VIEW_TOOL_HIGHLIGHT (object));

    if (private->hand1_cursor)
        gdk_cursor_unref (private->hand1_cursor);

    if (private->hand2_cursor)
        gdk_cursor_unref (private->hand2_cursor);

    if (private->data_mutex)
        g_mutex_free (private->data_mutex);

#ifdef DEBUG
    g_print ("<GSeisViewToolHighlight is finalized>\n");
#endif
    if (G_OBJECT_CLASS (g_seis_view_tool_highlight_parent_class)->finalize)
        G_OBJECT_CLASS (g_seis_view_tool_highlight_parent_class)->finalize (object);
}

enum {
    PROP_0,
    PROP_RUBBERBAND_SELECTION
};

static void g_seis_view_tool_highlight_set_property (GObject *object, guint prop_id,
                                                     const GValue *value, GParamSpec *pspec) {
    GSeisViewToolHighlight *self = G_SEIS_VIEW_TOOL_HIGHLIGHT (object);
    GSeisViewToolHighlightPrivate *private = G_SEIS_VIEW_TOOL_HIGHLIGHT_GET_PRIVATE (self);

    if (private->data_mutex)
        g_mutex_lock (private->data_mutex);
    switch (prop_id) {
        case PROP_RUBBERBAND_SELECTION:
            g_seis_view_tool_highlight_set_rubberband_selection (self, g_value_get_boolean (value));
            break;
        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
            break;
    }
    if (private->data_mutex)
        g_mutex_unlock (private->data_mutex);
}

static void g_seis_view_tool_highlight_get_property (GObject *object, guint prop_id,
                                                   GValue *value, GParamSpec *pspec) {
    GSeisViewToolHighlight *self = G_SEIS_VIEW_TOOL_HIGHLIGHT (object);
    GSeisViewToolHighlightPrivate *private = G_SEIS_VIEW_TOOL_HIGHLIGHT_GET_PRIVATE (self);

    if (private->data_mutex)
        g_mutex_lock (private->data_mutex);
    switch (prop_id) {
        case PROP_RUBBERBAND_SELECTION:
            g_value_set_boolean (value, private->rubberband_selection);
            break;
        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
            break;
    }
    if (private->data_mutex)
        g_mutex_unlock (private->data_mutex);
}

static void g_seis_view_tool_highlight_class_init (GSeisViewToolHighlightClass *klass) {
    GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
    GSeisViewToolClass *tool_class = G_SEIS_VIEW_TOOL_CLASS (klass);

    gobject_class->finalize = g_seis_view_tool_highlight_finalize;
    gobject_class->set_property = g_seis_view_tool_highlight_set_property;
    gobject_class->get_property = g_seis_view_tool_highlight_get_property;

    g_type_class_add_private (klass, sizeof (GSeisViewToolHighlightPrivate));

    tool_class->view_attach_notify = g_seis_view_tool_attach_notify_int;
    tool_class->view_detach_notify = g_seis_view_tool_detach_notify_int;
    tool_class->view_button_event = g_seis_view_tool_button_event_int;
    tool_class->view_scroll_event = g_seis_view_tool_scroll_event_int;
    tool_class->view_motion_event = g_seis_view_tool_motion_event_int;

    klass->highlight_scroll_up = NULL;
    klass->highlight_scroll_down = NULL;

    klass->highlight_scroll_up_id = g_signal_new ("highlight_scroll_up",
                                                  G_TYPE_FROM_CLASS ((gpointer)G_OBJECT_CLASS (klass)),
                                                  G_SIGNAL_RUN_LAST,
                                                  G_STRUCT_OFFSET (GSeisViewToolHighlightClass, highlight_scroll_up),
                                                  NULL, NULL,
                                                  gtkseisviewgl_marshal_VOID__VOID,
                                                  G_TYPE_NONE, 0);

    klass->highlight_scroll_down_id = g_signal_new ("highlight_scroll_down",
                                                    G_TYPE_FROM_CLASS ((gpointer)G_OBJECT_CLASS (klass)),
                                                    G_SIGNAL_RUN_LAST,
                                                    G_STRUCT_OFFSET (GSeisViewToolHighlightClass, highlight_scroll_down),
                                                    NULL, NULL,
                                                    gtkseisviewgl_marshal_VOID__VOID,
                                                    G_TYPE_NONE, 0);

    g_object_class_install_property (gobject_class,
                                     PROP_RUBBERBAND_SELECTION,
                                     g_param_spec_boolean ("rubberband_selection", "RubberbandSelection",
                                     "If TRUE then MB3 drag performs the highlight selection with the rubberband",
                                     TRUE,
                                     G_PARAM_READWRITE));

#ifdef DEBUG
    g_print ("<GSeisViewToolHighlight class is inited>\n");
#endif
}

GSeisViewToolHighlight* g_seis_view_tool_highlight_new () {
    return g_object_new (G_SEIS_TYPE_VIEW_TOOL_HIGHLIGHT, NULL);
}