path: root/addressbook/gui/widgets/e-minicard-label.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Chris Lahey <clahey@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-minicard-label.h"

#include <gtk/gtk.h>
#include <libgnomecanvas/libgnomecanvas.h>
#include <glib/gi18n.h>
#include <e-util/e-util.h>
#include <text/e-text.h>
#include <misc/e-canvas.h>
#include <misc/e-canvas-utils.h>
#include <gdk/gdkkeysyms.h>

static void e_minicard_label_init       (EMinicardLabel      *card);
static void e_minicard_label_class_init (EMinicardLabelClass     *klass);
static void e_minicard_label_set_property  (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec);
static void e_minicard_label_get_property  (GObject *object, guint property_id, GValue *value, GParamSpec *pspec);
static gboolean e_minicard_label_event (GnomeCanvasItem *item, GdkEvent *event);
static void e_minicard_label_realize (GnomeCanvasItem *item);
static void e_minicard_label_unrealize (GnomeCanvasItem *item);
static void e_minicard_label_reflow (GnomeCanvasItem *item, gint flags);
static void e_minicard_label_style_set (EMinicardLabel *label, GtkStyle *previous_style);

static void e_minicard_label_resize_children ( EMinicardLabel *e_minicard_label );

static void set_colors (EMinicardLabel *label);

static GnomeCanvasGroupClass *parent_class = NULL;

/* The arguments we take */
enum {
    PROP_0,
    PROP_WIDTH,
    PROP_HEIGHT,
    PROP_HAS_FOCUS,
    PROP_FIELD,
    PROP_FIELDNAME,
    PROP_TEXT_MODEL,
    PROP_MAX_FIELD_NAME_WIDTH,
    PROP_EDITABLE
};

enum {
    STYLE_SET,
    LAST_SIGNAL
};

static guint e_minicard_label_signals[LAST_SIGNAL] = {0, };

GType
e_minicard_label_get_type (void)
{
    static GType type = 0;

    if (!type) {
        static const GTypeInfo info =  {
            sizeof (EMinicardLabelClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_minicard_label_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (EMinicardLabel),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_minicard_label_init,
        };

        type = g_type_register_static (gnome_canvas_group_get_type (), "EMinicardLabel", &info, 0);
    }

    return type;
}

static void
e_minicard_label_class_init (EMinicardLabelClass *klass)
{
    GObjectClass *object_class;
    GnomeCanvasItemClass *item_class;

    object_class = G_OBJECT_CLASS (klass);
    item_class = (GnomeCanvasItemClass *) klass;

    klass->style_set = e_minicard_label_style_set;

    parent_class = g_type_class_peek_parent (klass);

    object_class->set_property = e_minicard_label_set_property;
    object_class->get_property = e_minicard_label_get_property;
    /*  object_class->destroy = e_minicard_label_destroy; */

    g_object_class_install_property (object_class, PROP_WIDTH,
                     g_param_spec_double ("width",
                                  "Width",
                                  NULL,
                                  0.0, G_MAXDOUBLE, 10.0,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_HEIGHT,
                     g_param_spec_double ("height",
                                  "Height",
                                  NULL,
                                  0.0, G_MAXDOUBLE, 10.0,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_HAS_FOCUS,
                     g_param_spec_boolean ("has_focus",
                                   "Has Focus",
                                   NULL,
                                   FALSE,
                                   G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_FIELD,
                     g_param_spec_string ("field",
                                  "Field",
                                  NULL,
                                  NULL,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_FIELDNAME,
                     g_param_spec_string ("fieldname",
                                  "Field Name",
                                  NULL,
                                  NULL,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_TEXT_MODEL,
                     g_param_spec_object ("text_model",
                                  "Text Model",
                                  NULL,
                                  E_TYPE_TEXT_MODEL,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_MAX_FIELD_NAME_WIDTH,
                     g_param_spec_double ("max_field_name_length",
                                  "Max field name length",
                                  NULL,
                                  -1.0, G_MAXDOUBLE, -1.0,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_EDITABLE,
                     g_param_spec_boolean ("editable",
                                   "Editable",
                                   NULL,
                                   FALSE,
                                   G_PARAM_READWRITE));

    e_minicard_label_signals[STYLE_SET] =
        g_signal_new ("style_set",
                  G_TYPE_FROM_CLASS (object_class),
                  G_SIGNAL_RUN_FIRST,
                  G_STRUCT_OFFSET (EMinicardLabelClass, style_set),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__OBJECT,
                  G_TYPE_NONE, 1,
                  GTK_TYPE_STYLE);

    /* GnomeCanvasItem method overrides */
    item_class->realize     = e_minicard_label_realize;
    item_class->unrealize   = e_minicard_label_unrealize;
    item_class->event       = e_minicard_label_event;
}

static void
e_minicard_label_init (EMinicardLabel *minicard_label)
{
  minicard_label->width = 10;
  minicard_label->height = 10;
  minicard_label->rect = NULL;
  minicard_label->fieldname = NULL;
  minicard_label->field = NULL;

  minicard_label->max_field_name_length = -1;

  e_canvas_item_set_reflow_callback (GNOME_CANVAS_ITEM (minicard_label), e_minicard_label_reflow);
}

static void
e_minicard_label_set_property (GObject *object,
                               guint property_id,
                               const GValue *value,
                               GParamSpec *pspec)
{
    EMinicardLabel *e_minicard_label;
    GnomeCanvasItem *item;

    e_minicard_label = E_MINICARD_LABEL (object);
    item = GNOME_CANVAS_ITEM (object);

    switch (property_id) {
    case PROP_WIDTH:
        e_minicard_label->width = g_value_get_double (value);
        e_minicard_label_resize_children (e_minicard_label);
        e_canvas_item_request_reflow (item);
        break;
    case PROP_HAS_FOCUS:
        if (e_minicard_label->field && (g_value_get_boolean (value) != E_FOCUS_NONE))
            e_canvas_item_grab_focus (e_minicard_label->field, FALSE);
        break;
    case PROP_FIELD:
        gnome_canvas_item_set( e_minicard_label->field, "text", g_value_get_string (value), NULL );
        break;
    case PROP_FIELDNAME:
        gnome_canvas_item_set( e_minicard_label->fieldname, "text", g_value_get_string (value), NULL );
        break;
    case PROP_TEXT_MODEL:
        gnome_canvas_item_set( e_minicard_label->field, "model", g_value_get_object (value), NULL);
        break;
    case PROP_MAX_FIELD_NAME_WIDTH:
        e_minicard_label->max_field_name_length = g_value_get_double (value);
        break;
    case PROP_EDITABLE:
        e_minicard_label->editable = g_value_get_boolean (value);
        g_object_set (e_minicard_label->field, "editable", FALSE /* e_minicard_label->editable */, NULL);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
        break;
    }
}

static void
e_minicard_label_get_property (GObject *object,
                               guint property_id,
                               GValue *value,
                               GParamSpec *pspec)
{
    EMinicardLabel *e_minicard_label;

    e_minicard_label = E_MINICARD_LABEL (object);

    switch (property_id) {
    case PROP_WIDTH:
        g_value_set_double (value, e_minicard_label->width);
        break;
    case PROP_HEIGHT:
        g_value_set_double (value, e_minicard_label->height);
        break;
    case PROP_HAS_FOCUS:
        g_value_set_boolean (value, e_minicard_label->has_focus ? E_FOCUS_CURRENT : E_FOCUS_NONE);
        break;
    case PROP_FIELD:
        g_object_get_property (G_OBJECT (e_minicard_label->field),
                       "text", value);
        break;
    case PROP_FIELDNAME:
        g_object_get_property (G_OBJECT (e_minicard_label->fieldname),
                       "text", value);
        break;
    case PROP_TEXT_MODEL:
        g_object_get_property (G_OBJECT (e_minicard_label->field),
                       "model", value);
        break;
    case PROP_MAX_FIELD_NAME_WIDTH:
        g_value_set_double (value, e_minicard_label->max_field_name_length);
        break;
    case PROP_EDITABLE:
        g_value_set_boolean (value, e_minicard_label->editable);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
        break;
    }
}

static void
e_minicard_label_realize (GnomeCanvasItem *item)
{
    EMinicardLabel *e_minicard_label;
    GnomeCanvasGroup *group;

    e_minicard_label = E_MINICARD_LABEL (item);
    group = GNOME_CANVAS_GROUP ( item );

    if (GNOME_CANVAS_ITEM_CLASS ( parent_class )->realize)
        (* GNOME_CANVAS_ITEM_CLASS ( parent_class )->realize) (item);

    e_canvas_item_request_reflow (item);

    e_minicard_label->rect =
      gnome_canvas_item_new ( group,
                 gnome_canvas_rect_get_type (),
                 "x1", (double) 0,
                 "y1", (double) 0,
                 "x2", (double) e_minicard_label->width - 1,
                 "y2", (double) e_minicard_label->height - 1,
                 "outline_color", NULL,
                 NULL );
    e_minicard_label->fieldname =
      gnome_canvas_item_new ( group,
                 e_text_get_type (),
                 "clip_width", (double) ( e_minicard_label->width / 2 - 4 ),
                 "clip", TRUE,
                 "use_ellipsis", TRUE,
                 "fill_color", "black",
                 "draw_background", FALSE,
                 "im_context", E_CANVAS (item->canvas)->im_context,
                 NULL );
    e_canvas_item_move_absolute (e_minicard_label->fieldname, 2, 1);

    e_minicard_label->field =
      gnome_canvas_item_new ( group,
                 e_text_get_type (),
                 "clip_width", (double) ( ( e_minicard_label->width + 1 ) / 2 - 4 ),
                 "clip", TRUE,
                 "use_ellipsis", TRUE,
                 "fill_color", "black",
                 "editable", FALSE, /* e_minicard_label->editable, */
                 "draw_background", FALSE,
                 "im_context", E_CANVAS (item->canvas)->im_context,
                 NULL );
    e_canvas_item_move_absolute (e_minicard_label->field, ( e_minicard_label->width / 2 + 2), 1);

    set_colors (e_minicard_label);

    e_canvas_item_request_reflow (item);
}

static void
e_minicard_label_unrealize (GnomeCanvasItem *item)
{
    if (GNOME_CANVAS_ITEM_CLASS ( parent_class )->unrealize)
        (* GNOME_CANVAS_ITEM_CLASS ( parent_class )->unrealize) (item);
}

static gboolean
e_minicard_label_event (GnomeCanvasItem *item,
                        GdkEvent *event)
{
    EMinicardLabel *e_minicard_label;

    e_minicard_label = E_MINICARD_LABEL (item);

    switch (event->type) {
    case GDK_KEY_PRESS:
        if (event->key.keyval == GDK_KEY_Escape) {
            GnomeCanvasItem *parent;

            e_text_cancel_editing (E_TEXT (e_minicard_label->field));

            parent = GNOME_CANVAS_ITEM (e_minicard_label)->parent;
            if (parent)
                e_canvas_item_grab_focus (parent, FALSE);
        }
        break;
    case GDK_FOCUS_CHANGE: {
        GdkEventFocus *focus_event = (GdkEventFocus *) event;

        e_minicard_label->has_focus = focus_event->in;
        set_colors (e_minicard_label);

        g_object_set (e_minicard_label->field,
                  "handle_popup", e_minicard_label->has_focus,
                  NULL);
        break;
    }
    case GDK_BUTTON_PRESS:
    case GDK_BUTTON_RELEASE:
    case GDK_MOTION_NOTIFY:
    case GDK_ENTER_NOTIFY:
    case GDK_LEAVE_NOTIFY: {
        gboolean return_val;
        g_signal_emit_by_name(e_minicard_label->field, "event", event, &return_val);
        return return_val;
    }
    default:
        break;
    }

    if (GNOME_CANVAS_ITEM_CLASS ( parent_class )->event)
        return (* GNOME_CANVAS_ITEM_CLASS ( parent_class )->event) (item, event);
    else
        return 0;
}

static void
e_minicard_label_resize_children (EMinicardLabel *e_minicard_label)
{
    gdouble left_width;
    gdouble fieldnamewidth;
    gdouble fieldwidth;
    gboolean is_rtl = (gtk_widget_get_default_direction () == GTK_TEXT_DIR_RTL);
    if (e_minicard_label->max_field_name_length != -1 && ((e_minicard_label->width / 2) - 4 > e_minicard_label->max_field_name_length))
        left_width = e_minicard_label->max_field_name_length;
    else
        left_width = e_minicard_label->width / 2 - 4;

    fieldnamewidth = (double) MAX ( left_width, 0 );
    fieldwidth = (double) MAX ( e_minicard_label->width - 8 - left_width, 0 );
    gnome_canvas_item_set ( e_minicard_label->fieldname,
                   "clip_width", is_rtl ? fieldwidth : fieldnamewidth,
                   NULL );
    gnome_canvas_item_set ( e_minicard_label->field,
                   "clip_width", is_rtl ? fieldnamewidth : fieldwidth,
                   NULL );
}

static void
set_colors (EMinicardLabel *label)
{
    GnomeCanvasItem *item = GNOME_CANVAS_ITEM (label);

    if ((item->flags & GNOME_CANVAS_ITEM_REALIZED)) {
        GnomeCanvas *canvas;
        GtkStyle *style;

        canvas = GNOME_CANVAS_ITEM (label)->canvas;
        style = gtk_widget_get_style (GTK_WIDGET (canvas));

        if (label->has_focus) {
            gnome_canvas_item_set (label->rect,
                           "outline_color_gdk", &style->mid[GTK_STATE_SELECTED],
                           "fill_color_gdk", &style->bg[GTK_STATE_NORMAL],
                           NULL);

            gnome_canvas_item_set (label->field,
                           "fill_color_gdk", &style->text[GTK_STATE_NORMAL],
                           NULL);

            gnome_canvas_item_set (label->fieldname,
                           "fill_color_gdk", &style->text[GTK_STATE_NORMAL],
                           NULL);
        }
        else {
            gnome_canvas_item_set (label->rect,
                           "outline_color_gdk", NULL,
                           "fill_color_gdk", NULL,
                           NULL);

            gnome_canvas_item_set (label->field,
                           "fill_color_gdk", &style->text[GTK_STATE_NORMAL],
                           NULL);

            gnome_canvas_item_set (label->fieldname,
                           "fill_color_gdk", &style->text[GTK_STATE_NORMAL],
                           NULL);
        }
    }
}

static void
e_minicard_label_style_set (EMinicardLabel *label,
                            GtkStyle *previous_style)
{
    set_colors (label);
}

static void
e_minicard_label_reflow (GnomeCanvasItem *item,
                         gint flags)
{
    EMinicardLabel *e_minicard_label = E_MINICARD_LABEL (item);

    gint old_height;
    gdouble text_height;
    gdouble left_width;

    old_height = e_minicard_label->height;

    g_object_get (e_minicard_label->fieldname,
             "text_height", &text_height,
             NULL);

    e_minicard_label->height = text_height;

    g_object_get (e_minicard_label->field,
             "text_height", &text_height,
             NULL);

    if (e_minicard_label->height < text_height)
        e_minicard_label->height = text_height;
    e_minicard_label->height += 3;

    gnome_canvas_item_set ( e_minicard_label->rect,
                   "x2", (double) e_minicard_label->width - 1,
                   "y2", (double) e_minicard_label->height - 1,
                   NULL );

    gnome_canvas_item_set ( e_minicard_label->fieldname,
                   "clip_height", (double) e_minicard_label->height - 3,
                   NULL );

    if (e_minicard_label->max_field_name_length != -1 && ((e_minicard_label->width / 2) - 4 > e_minicard_label->max_field_name_length))
        left_width = e_minicard_label->max_field_name_length;
    else
        left_width = e_minicard_label->width / 2 - 4;

    e_canvas_item_move_absolute (e_minicard_label->field, left_width + 6, 1);

    if (old_height != e_minicard_label->height)
        e_canvas_item_request_parent_reflow (item);
}

GnomeCanvasItem *
e_minicard_label_new (GnomeCanvasGroup *parent)
{
    GnomeCanvasItem *item = gnome_canvas_item_new (parent, e_minicard_label_get_type (), NULL);
    return item;
}