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author | Perberos <[email protected]> | 2011-11-09 18:17:43 -0300 |
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committer | Perberos <[email protected]> | 2011-11-09 18:17:43 -0300 |
commit | f6ce926719943751cf65cacde7fae050593eb2d6 (patch) | |
tree | 9224d1751678cf2d1fbd0431f128b711311c0287 /cut-n-paste/zoom-control/ephy-zoom-action.c | |
download | atril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.bz2 atril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.xz |
inicial
Diffstat (limited to 'cut-n-paste/zoom-control/ephy-zoom-action.c')
-rw-r--r-- | cut-n-paste/zoom-control/ephy-zoom-action.c | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/cut-n-paste/zoom-control/ephy-zoom-action.c b/cut-n-paste/zoom-control/ephy-zoom-action.c new file mode 100644 index 00000000..b6250c8b --- /dev/null +++ b/cut-n-paste/zoom-control/ephy-zoom-action.c @@ -0,0 +1,336 @@ +/* + * Copyright (C) 2003 Marco Pesenti Gritti + * Copyright (C) 2003, 2004 Christian Persch + * + * Modified 2005 by James Bowes for use in evince. + * + * 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $Id$ + */ + +#include "config.h" + +#include "ephy-zoom-action.h" +#include "ephy-zoom-control.h" +#include "ephy-zoom.h" + +#include <glib-object.h> +#include <glib/gi18n.h> +#include <gtk/gtk.h> + +#define EPHY_ZOOM_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_ZOOM_ACTION, EphyZoomActionPrivate)) + +struct _EphyZoomActionPrivate +{ + float zoom; + float min_zoom; + float max_zoom; +}; + +enum +{ + PROP_0, + PROP_ZOOM, + PROP_MIN_ZOOM, + PROP_MAX_ZOOM +}; + + +static void ephy_zoom_action_init (EphyZoomAction *action); +static void ephy_zoom_action_class_init (EphyZoomActionClass *class); + +enum +{ + ZOOM_TO_LEVEL_SIGNAL, + LAST_SIGNAL +}; + +static guint signals[LAST_SIGNAL] = { 0 }; + +G_DEFINE_TYPE (EphyZoomAction, ephy_zoom_action, GTK_TYPE_ACTION) + +static void +zoom_to_level_cb (EphyZoomControl *control, + float zoom, + EphyZoomAction *action) +{ + g_signal_emit (action, signals[ZOOM_TO_LEVEL_SIGNAL], 0, zoom); +} + +static void +sync_zoom_cb (GtkAction *action, GParamSpec *pspec, GtkWidget *proxy) +{ + EphyZoomAction *zoom_action = EPHY_ZOOM_ACTION (action); + + g_object_set (G_OBJECT (proxy), "zoom", zoom_action->priv->zoom, NULL); +} + +static void +sync_min_zoom_cb (GtkAction *action, GParamSpec *pspec, GtkWidget *proxy) +{ + EphyZoomAction *zoom_action = EPHY_ZOOM_ACTION (action); + + g_object_set (G_OBJECT (proxy), "min-zoom", zoom_action->priv->min_zoom, NULL); +} + +static void +sync_max_zoom_cb (GtkAction *action, GParamSpec *pspec, GtkWidget *proxy) +{ + EphyZoomAction *zoom_action = EPHY_ZOOM_ACTION (action); + + g_object_set (G_OBJECT (proxy), "max-zoom", zoom_action->priv->max_zoom, NULL); +} + +static void +connect_proxy (GtkAction *action, GtkWidget *proxy) +{ + if (EPHY_IS_ZOOM_CONTROL (proxy)) + { + g_signal_connect_object (action, "notify::zoom", + G_CALLBACK (sync_zoom_cb), proxy, 0); + g_signal_connect_object (action, "notify::min-zoom", + G_CALLBACK (sync_min_zoom_cb), proxy, 0); + g_signal_connect_object (action, "notify::max-zoom", + G_CALLBACK (sync_max_zoom_cb), proxy, 0); + g_signal_connect (proxy, "zoom_to_level", + G_CALLBACK (zoom_to_level_cb), action); + } + + GTK_ACTION_CLASS (ephy_zoom_action_parent_class)->connect_proxy (action, proxy); +} + +static void +proxy_menu_activate_cb (GtkMenuItem *menu_item, EphyZoomAction *action) +{ + gint index; + float zoom; + + /* menu item was toggled OFF */ + if (!gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (menu_item))) return; + + index = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menu_item), "zoom-level")); + zoom = zoom_levels[index].level; + + if (zoom != action->priv->zoom) + { + g_signal_emit (action, signals[ZOOM_TO_LEVEL_SIGNAL], 0, zoom); + } +} + +static GtkWidget * +create_menu_item (GtkAction *action) +{ + EphyZoomActionPrivate *p = EPHY_ZOOM_ACTION (action)->priv; + GtkWidget *menu, *menu_item; + GSList *group = NULL; + int i; + + menu = gtk_menu_new (); + + for (i = 0; i < n_zoom_levels; i++) + { + if (zoom_levels[i].level == EPHY_ZOOM_SEPARATOR) + { + menu_item = gtk_separator_menu_item_new (); + } + else + { + menu_item = gtk_radio_menu_item_new_with_label (group, + _(zoom_levels[i].name)); + group = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM (menu_item)); + + gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menu_item), + p->zoom == zoom_levels[i].level); + + g_object_set_data (G_OBJECT (menu_item), "zoom-level", GINT_TO_POINTER (i)); + g_signal_connect_object (G_OBJECT (menu_item), "activate", + G_CALLBACK (proxy_menu_activate_cb), action, 0); + } + + gtk_widget_show (menu_item); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item); + } + + gtk_widget_show (menu); + + menu_item = GTK_ACTION_CLASS (ephy_zoom_action_parent_class)->create_menu_item (action); + + gtk_menu_item_set_submenu (GTK_MENU_ITEM (menu_item), menu); + + gtk_widget_show (menu_item); + + return menu_item; +} + +static void +ephy_zoom_action_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + EphyZoomAction *action; + + action = EPHY_ZOOM_ACTION (object); + + switch (prop_id) + { + case PROP_ZOOM: + action->priv->zoom = g_value_get_float (value); + break; + case PROP_MIN_ZOOM: + action->priv->min_zoom = g_value_get_float (value); + break; + case PROP_MAX_ZOOM: + action->priv->max_zoom = g_value_get_float (value); + break; + } +} + +static void +ephy_zoom_action_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EphyZoomAction *action; + + action = EPHY_ZOOM_ACTION (object); + + switch (prop_id) + { + case PROP_ZOOM: + g_value_set_float (value, action->priv->zoom); + break; + case PROP_MIN_ZOOM: + g_value_set_float (value, action->priv->min_zoom); + break; + case PROP_MAX_ZOOM: + g_value_set_float (value, action->priv->max_zoom); + break; + } +} + +static void +ephy_zoom_action_class_init (EphyZoomActionClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + GtkActionClass *action_class = GTK_ACTION_CLASS (class); + + object_class->set_property = ephy_zoom_action_set_property; + object_class->get_property = ephy_zoom_action_get_property; + + action_class->toolbar_item_type = EPHY_TYPE_ZOOM_CONTROL; + action_class->connect_proxy = connect_proxy; + action_class->create_menu_item = create_menu_item; + + g_object_class_install_property (object_class, + PROP_ZOOM, + g_param_spec_float ("zoom", + "Zoom", + "Zoom", + ZOOM_MINIMAL, + ZOOM_MAXIMAL, + 1.0, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_MIN_ZOOM, + g_param_spec_float ("min-zoom", + "MinZoom", + "The minimum zoom", + ZOOM_MINIMAL, + ZOOM_MAXIMAL, + ZOOM_MINIMAL, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_MAX_ZOOM, + g_param_spec_float ("max-zoom", + "MaxZoom", + "The maximum zoom", + ZOOM_MINIMAL, + ZOOM_MAXIMAL, + ZOOM_MAXIMAL, + G_PARAM_READWRITE)); + + signals[ZOOM_TO_LEVEL_SIGNAL] = + g_signal_new ("zoom_to_level", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (EphyZoomActionClass, zoom_to_level), + NULL, NULL, + g_cclosure_marshal_VOID__FLOAT, + G_TYPE_NONE, + 1, + G_TYPE_FLOAT); + + g_type_class_add_private (object_class, sizeof (EphyZoomActionPrivate)); +} + +static void +ephy_zoom_action_init (EphyZoomAction *action) +{ + action->priv = EPHY_ZOOM_ACTION_GET_PRIVATE (action); + + action->priv->zoom = 1.0; +} + +void +ephy_zoom_action_set_zoom_level (EphyZoomAction *action, float zoom) +{ + g_return_if_fail (EPHY_IS_ZOOM_ACTION (action)); + + if (zoom < ZOOM_MINIMAL || zoom > ZOOM_MAXIMAL) return; + + action->priv->zoom = zoom; + g_object_notify (G_OBJECT (action), "zoom"); +} + +float +ephy_zoom_action_get_zoom_level (EphyZoomAction *action) +{ + g_return_val_if_fail (EPHY_IS_ZOOM_ACTION (action), 1.0); + + return action->priv->zoom; +} + +void +ephy_zoom_action_set_min_zoom_level (EphyZoomAction *action, + float zoom) +{ + g_return_if_fail (EPHY_IS_ZOOM_ACTION (action)); + + if (zoom < ZOOM_MINIMAL || zoom > ZOOM_MAXIMAL) return; + + action->priv->min_zoom = zoom; + if (action->priv->zoom > 0 && action->priv->zoom < zoom) + ephy_zoom_action_set_zoom_level (action, zoom); + + g_object_notify (G_OBJECT (action), "min-zoom"); +} + +void +ephy_zoom_action_set_max_zoom_level (EphyZoomAction *action, + float zoom) +{ + g_return_if_fail (EPHY_IS_ZOOM_ACTION (action)); + + if (zoom < ZOOM_MINIMAL || zoom > ZOOM_MAXIMAL) return; + + action->priv->max_zoom = zoom; + if (action->priv->zoom > 0 && action->priv->zoom > zoom) + ephy_zoom_action_set_zoom_level (action, zoom); + + g_object_notify (G_OBJECT (action), "max-zoom"); +} |