path: root/lib/widgets/ephy-icon-entry.c

/*
 *  Copyright (C) 2003, 2004, 2005  Christian Persch
 *
 *  This library 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) any later version.
 *
 *  This library 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 this library; if not, write to the
 *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 *  Boston, MA 02111-1307, USA.
 *
 *  Adapted and modified from gtk+ code:
 *
 *  Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *  Modified by the GTK+ Team and others 1997-2005.  See the AUTHORS
 *  file in the gtk+ distribution for a list of people on the GTK+ Team.
 *  See the ChangeLog in the gtk+ distribution files for a list of changes.
 *  These files are distributed with GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 *
 *  $Id$
 */

#include "config.h"

#include "ephy-icon-entry.h"

#include <gtk/gtkentry.h>
#include <gtk/gtkbox.h>
#include <gtk/gtkhbox.h>

#define EPHY_ICON_ENTRY_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_ICON_ENTRY, EphyIconEntryPrivate))

struct _EphyIconEntryPrivate
{
    GtkWidget *hbox;
};

static GtkWidgetClass *parent_class = NULL;

/* private helper functions */

static gboolean
entry_focus_change_cb (GtkWidget *widget,
               GdkEventFocus *event,
               GtkWidget *entry)
{
    gtk_widget_queue_draw (entry);

    return FALSE;
}

static void
ephy_icon_entry_get_borders (GtkWidget *widget,
                 GtkWidget *entry,
                 int *xborder,
                 int *yborder)
{
    int focus_width;
    gboolean interior_focus;

    g_return_if_fail (entry->style != NULL);

    gtk_widget_style_get (entry,
                  "focus-line-width", &focus_width,
                  "interior-focus", &interior_focus,
                  NULL);

    *xborder = entry->style->xthickness;
    *yborder = entry->style->ythickness;

    if (!interior_focus)
    {
        *xborder += focus_width;
        *yborder += focus_width;
    }
}

static void
ephy_icon_entry_paint (GtkWidget *widget,
               GdkEventExpose *event)
{
    EphyIconEntry *entry = EPHY_ICON_ENTRY (widget);
    GtkWidget *entry_widget = entry->entry;
    int x = 0, y = 0, width, height, focus_width;
    gboolean interior_focus;

    gtk_widget_style_get (entry_widget,
                  "interior-focus", &interior_focus,
                  "focus-line-width", &focus_width,
                  NULL);

    gdk_drawable_get_size (widget->window, &width, &height);

    if (GTK_WIDGET_HAS_FOCUS (entry_widget) && !interior_focus)
    {
        x += focus_width;
        y += focus_width;
        width -= 2 * focus_width;
        height -= 2 * focus_width;
    }

    gtk_paint_flat_box (entry_widget->style, widget->window, 
                GTK_WIDGET_STATE (entry_widget), GTK_SHADOW_NONE,
                NULL, entry_widget, "entry_bg", 
                /* FIXME: was 0, 0 in gtk_entry_expose, but I think this is correct: */
                x, y, width, height);
     
    gtk_paint_shadow (entry_widget->style, widget->window,
              GTK_STATE_NORMAL, GTK_SHADOW_IN,
              NULL, entry_widget, "entry",
              x, y, width, height);

    if (GTK_WIDGET_HAS_FOCUS (entry_widget) && !interior_focus)
    {
        x -= focus_width;
        y -= focus_width;
        width += 2 * focus_width;
        height += 2 * focus_width;

        gtk_paint_focus (entry_widget->style, widget->window,
                 GTK_WIDGET_STATE (entry_widget),
                 NULL, entry_widget, "entry",
                 /* FIXME: was 0, 0 in gtk_entry_draw_frame, but I think this is correct: */
                 x, y, width, height);
    }
}

/* Class implementation */

static void
ephy_icon_entry_init (EphyIconEntry *entry)
{
    EphyIconEntryPrivate *priv;
    GtkWidget *widget = (GtkWidget *) entry;

    priv = entry->priv = EPHY_ICON_ENTRY_GET_PRIVATE (entry);

    GTK_WIDGET_UNSET_FLAGS (widget, GTK_NO_WINDOW);

    priv->hbox = gtk_hbox_new (FALSE, /* FIXME */ 0);
    gtk_container_add (GTK_CONTAINER (entry), priv->hbox);

    entry->entry = gtk_entry_new ();
    gtk_entry_set_has_frame (GTK_ENTRY (entry->entry), FALSE);
    gtk_box_pack_start (GTK_BOX (priv->hbox), entry->entry, TRUE, TRUE, /* FIXME */ 0);

    /* We need to queue a redraw when focus changes, to comply with themes
     * (like Clearlooks) which draw focused and unfocused entries differently.
     */
    g_signal_connect_after (entry->entry, "focus-in-event",
                G_CALLBACK (entry_focus_change_cb), entry);
    g_signal_connect_after (entry->entry, "focus-out-event",
                G_CALLBACK (entry_focus_change_cb), entry);
}

static void
ephy_icon_entry_realize (GtkWidget *widget)
{
    GdkWindowAttr attributes;
    gint attributes_mask;
    gint border_width;

    GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

    border_width = GTK_CONTAINER (widget)->border_width;

    attributes.x = widget->allocation.x + border_width;
    attributes.y = widget->allocation.y + border_width;
    attributes.width = widget->allocation.width - 2 * border_width;
    attributes.height = widget->allocation.height - 2 * border_width;
    attributes.window_type = GDK_WINDOW_CHILD;
    attributes.event_mask = gtk_widget_get_events (widget)
                | GDK_EXPOSURE_MASK;

    attributes.visual = gtk_widget_get_visual (widget);
    attributes.colormap = gtk_widget_get_colormap (widget);
    attributes.wclass = GDK_INPUT_OUTPUT;
    attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

    widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
                     &attributes, attributes_mask);
    gdk_window_set_user_data (widget->window, widget);

    widget->style = gtk_style_attach (widget->style, widget->window);

    gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}

static void
ephy_icon_entry_size_request (GtkWidget *widget,
                  GtkRequisition *requisition)
{
    EphyIconEntry *entry = EPHY_ICON_ENTRY (widget);
    GtkContainer *container = GTK_CONTAINER (widget);
    GtkBin *bin = GTK_BIN (widget);
    int xborder, yborder;

    requisition->width = requisition->height = container->border_width * 2;

    gtk_widget_ensure_style (entry->entry);
    ephy_icon_entry_get_borders (widget, entry->entry, &xborder, &yborder);

    if (GTK_WIDGET_VISIBLE (bin->child))
    {
        GtkRequisition child_requisition;

        gtk_widget_size_request (bin->child, &child_requisition);
        requisition->width += child_requisition.width;
        requisition->height += child_requisition.height;
    }

    requisition->width += 2 * xborder;
    requisition->height += 2 * yborder;
}

static void
ephy_icon_entry_size_allocate (GtkWidget *widget,
                   GtkAllocation *allocation)
{
    EphyIconEntry *entry = EPHY_ICON_ENTRY (widget);
    GtkContainer *container = GTK_CONTAINER (widget);
    GtkBin *bin = GTK_BIN (widget);
    GtkAllocation child_allocation;
    int xborder, yborder;

    widget->allocation = *allocation;

    ephy_icon_entry_get_borders (widget, entry->entry, &xborder, &yborder);

    if (GTK_WIDGET_REALIZED (widget))
    {
        child_allocation.x = container->border_width;
        child_allocation.y = container->border_width;
        child_allocation.width = MAX (allocation->width - container->border_width * 2, 0);
        child_allocation.height = MAX (allocation->height - container->border_width * 2, 0);

        gdk_window_move_resize (widget->window,
                    allocation->x + child_allocation.x,
                    allocation->y + child_allocation.y,
                    child_allocation.width,
                    child_allocation.height);
    }
  
    child_allocation.x = container->border_width + xborder;
    child_allocation.y = container->border_width + yborder;
    child_allocation.width = MAX (allocation->width - (container->border_width + xborder) * 2, 0);
    child_allocation.height = MAX (allocation->height - (container->border_width + yborder) * 2, 0);

    gtk_widget_size_allocate (bin->child, &child_allocation);
}

static gboolean
ephy_icon_entry_expose (GtkWidget *widget,
            GdkEventExpose *event)
{
    if (GTK_WIDGET_DRAWABLE (widget) &&
        event->window == widget->window)
    {
        ephy_icon_entry_paint (widget, event);
    }

    return parent_class->expose_event (widget, event);
}

static void
ephy_icon_entry_class_init (EphyIconEntryClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);
    GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);

    parent_class = GTK_WIDGET_CLASS (g_type_class_peek_parent (klass));

    widget_class->realize = ephy_icon_entry_realize;
    widget_class->size_request = ephy_icon_entry_size_request;
    widget_class->size_allocate = ephy_icon_entry_size_allocate;
    widget_class->expose_event = ephy_icon_entry_expose;

    g_type_class_add_private (object_class, sizeof (EphyIconEntryPrivate));
}

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

    if (G_UNLIKELY (type == 0))
    {
        static const GTypeInfo our_info =
        {
            sizeof (EphyIconEntryClass),
            NULL,
            NULL,
            (GClassInitFunc) ephy_icon_entry_class_init,
            NULL,
            NULL,
            sizeof (EphyIconEntry),
            0,
            (GInstanceInitFunc) ephy_icon_entry_init
        };

        type = g_type_register_static (GTK_TYPE_BIN,
                           "EphyIconEntry",
                           &our_info, 0);
    }

    return type;
}

/* public functions */

GtkWidget *
ephy_icon_entry_new (void)
{
    return GTK_WIDGET (g_object_new (EPHY_TYPE_ICON_ENTRY, NULL));
}

void
ephy_icon_entry_pack_widget (EphyIconEntry *entry,
                 GtkWidget *widget,
                 gboolean start)
{
    EphyIconEntryPrivate *priv;

    g_return_if_fail (EPHY_IS_ICON_ENTRY (entry));

    priv = entry->priv;

    if (start)
    {
        gtk_box_pack_start (GTK_BOX (priv->hbox), widget, FALSE, FALSE, /* FIXME */ 2);
        gtk_box_reorder_child (GTK_BOX (priv->hbox), widget, 0);
    }
    else
    {
        gtk_box_pack_end (GTK_BOX (priv->hbox), widget, FALSE, FALSE, /* FIXME */ 2);
    }
}