541 lines
18 KiB
C
541 lines
18 KiB
C
/*
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Copyright (C) 2007-2008 Christian Dywan <christian@twotoasts.de>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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See the file COPYING for the full license text.
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*/
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#include "katze-utils.h"
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#include <glib/gi18n.h>
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#include <string.h>
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static void
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proxy_toggle_button_toggled_cb (GtkToggleButton* button, GObject* object)
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{
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gboolean toggled = gtk_toggle_button_get_active (button);
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const gchar* property = g_object_get_data (G_OBJECT (button), "property");
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g_object_set (object, property, toggled, NULL);
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}
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static void
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proxy_file_file_set_cb (GtkFileChooser* button,
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GObject* object)
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{
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const gchar* file = gtk_file_chooser_get_filename (button);
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const gchar* property = g_object_get_data (G_OBJECT (button), "property");
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g_object_set (object, property, file, NULL);
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}
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static void
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proxy_folder_file_set_cb (GtkFileChooser* button,
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GObject* object)
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{
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const gchar* file = gtk_file_chooser_get_current_folder (button);
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const gchar* property = g_object_get_data (G_OBJECT (button), "property");
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g_object_set (object, property, file, NULL);
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}
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static void
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proxy_uri_file_set_cb (GtkFileChooser* button,
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GObject* object)
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{
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const gchar* file = gtk_file_chooser_get_uri (button);
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const gchar* property = g_object_get_data (G_OBJECT (button), "property");
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g_object_set (object, property, file, NULL);
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}
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static gchar*
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proxy_combo_box_text_changed_cb (GtkComboBox* button, GObject* object)
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{
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gchar* text = gtk_combo_box_get_active_text (button);
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const gchar* property = g_object_get_data (G_OBJECT (button), "property");
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g_object_set (object, property, text, NULL);
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return FALSE;
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}
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static gboolean
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proxy_entry_activate_cb (GtkEntry* entry,
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GObject* object)
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{
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const gchar* text = gtk_entry_get_text (entry);
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const gchar* property = g_object_get_data (G_OBJECT (entry), "property");
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g_object_set (object, property, text, NULL);
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return FALSE;
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}
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static gboolean
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proxy_entry_focus_out_event_cb (GtkEntry* entry,
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GdkEventFocus* event,
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GObject* object)
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{
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const gchar* text = gtk_entry_get_text (entry);
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const gchar* property = g_object_get_data (G_OBJECT (entry), "property");
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g_object_set (object, property, text, NULL);
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return FALSE;
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}
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static gboolean
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proxy_spin_button_changed_cb (GtkSpinButton* button, GObject* object)
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{
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GObjectClass* class = G_OBJECT_GET_CLASS (object);
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const gchar* property = g_object_get_data (G_OBJECT (button), "property");
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GParamSpec* pspec = g_object_class_find_property (class, property);
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if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_INT)
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{
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gint value = gtk_spin_button_get_value_as_int (button);
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g_object_set (object, property, value, NULL);
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}
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else
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{
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gdouble value = gtk_spin_button_get_value (button);
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g_object_set (object, property, value, NULL);
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}
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return FALSE;
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}
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static gchar*
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proxy_combo_box_changed_cb (GtkComboBox* button, GObject* object)
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{
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gint value = gtk_combo_box_get_active (button);
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const gchar* property = g_object_get_data (G_OBJECT (button), "property");
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g_object_set (object, property, value, NULL);
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return FALSE;
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}
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/**
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* katze_property_proxy:
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* @object: a #GObject
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* @property: the name of a property
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* @hint: a special hint
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*
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* Create a widget of an appropriate type to represent the specified
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* object's property. If the property is writable changes of the value
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* through the widget will be reflected in the value of the property.
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*
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* Supported values for @hint are as follows:
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* "blurb": the blurb of the property will be used to provide a kind
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* of label, instead of the name.
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* "file": the widget created will be particularly suitable for
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* choosing an existing filename.
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* "folder": the widget created will be particularly suitable for
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* choosing an existing folder.
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* "uri": the widget created will be particularly suitable for
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* choosing an existing filename, encoded as an URI.
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* "font": the widget created will be particularly suitable for
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* choosing a font from installed fonts.
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*
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* Any other values for @hint are silently ignored.
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*
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* Return value: a new widget
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**/
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GtkWidget*
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katze_property_proxy (gpointer object,
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const gchar* property,
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const gchar* hint)
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{
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g_return_val_if_fail (G_IS_OBJECT (object), NULL);
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GObjectClass* class = G_OBJECT_GET_CLASS (object);
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GParamSpec* pspec = g_object_class_find_property (class, property);
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if (!pspec)
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{
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g_warning (_("Property '%s' is invalid for %s"),
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property, G_OBJECT_CLASS_NAME (class));
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return gtk_label_new (property);
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}
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GType type = G_PARAM_SPEC_TYPE (pspec);
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const gchar* nick = g_param_spec_get_nick (pspec);
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const gchar* _hint = g_intern_string (hint);
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if (_hint == g_intern_string ("blurb"))
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nick = g_param_spec_get_blurb (pspec);
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GtkWidget* widget;
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gchar* string = NULL;
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if (type == G_TYPE_PARAM_BOOLEAN)
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{
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widget = gtk_check_button_new_with_label (gettext (nick));
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gboolean toggled;
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g_object_get (object, property, &toggled, NULL);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), toggled);
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g_signal_connect (widget, "toggled",
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G_CALLBACK (proxy_toggle_button_toggled_cb), object);
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}
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else if (type == G_TYPE_PARAM_STRING && _hint == g_intern_string ("file"))
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{
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widget = gtk_file_chooser_button_new (_("Choose file"),
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GTK_FILE_CHOOSER_ACTION_OPEN);
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g_object_get (object, property, &string, NULL);
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if (!string)
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string = g_strdup (G_PARAM_SPEC_STRING (pspec)->default_value);
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gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (widget),
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string ? string : "");
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#if GTK_CHECK_VERSION (2, 12, 0)
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g_signal_connect (widget, "file-set",
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G_CALLBACK (proxy_file_file_set_cb), object);
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#else
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if (pspec->flags & G_PARAM_WRITABLE)
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g_signal_connect (widget, "selection-changed",
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G_CALLBACK (proxy_file_file_set_cb), object);
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#endif
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}
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else if (type == G_TYPE_PARAM_STRING && _hint == g_intern_string ("folder"))
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{
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widget = gtk_file_chooser_button_new (_("Choose folder"),
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GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER);
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g_object_get (object, property, &string, NULL);
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if (!string)
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string = g_strdup (G_PARAM_SPEC_STRING (pspec)->default_value);
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gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (widget),
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string ? string : "");
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#if GTK_CHECK_VERSION (2, 12, 0)
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g_signal_connect (widget, "file-set",
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G_CALLBACK (proxy_folder_file_set_cb), object);
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#else
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if (pspec->flags & G_PARAM_WRITABLE)
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g_signal_connect (widget, "selection-changed",
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G_CALLBACK (proxy_folder_file_set_cb), object);
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#endif
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}
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else if (type == G_TYPE_PARAM_STRING && _hint == g_intern_string ("uri"))
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{
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widget = gtk_file_chooser_button_new (_("Choose file"),
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GTK_FILE_CHOOSER_ACTION_OPEN);
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g_object_get (object, property, &string, NULL);
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if (!string)
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string = g_strdup (G_PARAM_SPEC_STRING (pspec)->default_value);
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gtk_file_chooser_set_uri (GTK_FILE_CHOOSER (widget),
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string ? string : "");
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#if GTK_CHECK_VERSION (2, 12, 0)
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g_signal_connect (widget, "file-set",
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G_CALLBACK (proxy_uri_file_set_cb), object);
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#else
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if (pspec->flags & G_PARAM_WRITABLE)
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g_signal_connect (widget, "selection-changed",
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G_CALLBACK (proxy_uri_file_set_cb), object);
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#endif
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}
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else if (type == G_TYPE_PARAM_STRING && _hint == g_intern_string ("font"))
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{
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widget = gtk_combo_box_new_text ();
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PangoContext* context = gtk_widget_get_pango_context (widget);
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PangoFontFamily** families;
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int n_families;
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pango_context_list_families (context, &families, &n_families);
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g_object_get (object, property, &string, NULL);
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if (!string)
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string = g_strdup (G_PARAM_SPEC_STRING (pspec)->default_value);
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gint i = 0;
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while (i < n_families)
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{
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const gchar* font = pango_font_family_get_name (families[i]);
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gtk_combo_box_append_text (GTK_COMBO_BOX (widget), font);
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if (string && !strcmp (font, string))
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gtk_combo_box_set_active (GTK_COMBO_BOX (widget), i);
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i++;
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}
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gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (
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gtk_combo_box_get_model (GTK_COMBO_BOX (widget))),
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0, GTK_SORT_ASCENDING);
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g_signal_connect (widget, "changed",
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G_CALLBACK (proxy_combo_box_text_changed_cb), object);
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g_free (families);
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}
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else if (type == G_TYPE_PARAM_STRING)
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{
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widget = gtk_entry_new ();
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g_object_get (object, property, &string, NULL);
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if (!string)
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string = g_strdup (G_PARAM_SPEC_STRING (pspec)->default_value);
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gtk_entry_set_text (GTK_ENTRY (widget), string ? string : "");
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g_signal_connect (widget, "activate",
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G_CALLBACK (proxy_entry_activate_cb), object);
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g_signal_connect (widget, "focus-out-event",
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G_CALLBACK (proxy_entry_focus_out_event_cb), object);
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}
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else if (type == G_TYPE_PARAM_FLOAT)
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{
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widget = gtk_spin_button_new_with_range (
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G_PARAM_SPEC_FLOAT (pspec)->minimum,
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G_PARAM_SPEC_FLOAT (pspec)->maximum, 1);
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/* Keep it narrow, 5 + 2 digits are usually fine */
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gtk_entry_set_width_chars (GTK_ENTRY (widget), 5 + 2);
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gtk_spin_button_set_digits (GTK_SPIN_BUTTON (widget), 2);
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gfloat value;
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g_object_get (object, property, &value, NULL);
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gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), value);
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g_signal_connect (widget, "value-changed",
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G_CALLBACK (proxy_spin_button_changed_cb), object);
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}
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else if (type == G_TYPE_PARAM_INT)
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{
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widget = gtk_spin_button_new_with_range (
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G_PARAM_SPEC_INT (pspec)->minimum,
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G_PARAM_SPEC_INT (pspec)->maximum, 1);
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/* Keep it narrow, 5 digits are usually fine */
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gtk_entry_set_width_chars (GTK_ENTRY (widget), 5);
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gint value;
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g_object_get (object, property, &value, NULL);
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gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), value);
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g_signal_connect (widget, "value-changed",
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G_CALLBACK (proxy_spin_button_changed_cb), object);
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}
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else if (type == G_TYPE_PARAM_ENUM)
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{
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GEnumClass* enum_class = G_ENUM_CLASS (
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g_type_class_ref (pspec->value_type));
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widget = gtk_combo_box_new_text ();
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gint i = 0;
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while (i < enum_class->n_values)
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{
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const gchar* label = gettext (enum_class->values[i].value_nick);
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gtk_combo_box_append_text (GTK_COMBO_BOX (widget), label);
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i++;
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}
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gint value;
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g_object_get (object, property, &value, NULL);
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gtk_combo_box_set_active (GTK_COMBO_BOX (widget), value);
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g_signal_connect (widget, "changed",
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G_CALLBACK (proxy_combo_box_changed_cb), object);
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g_type_class_unref (enum_class);
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}
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else
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widget = gtk_label_new (gettext (nick));
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g_free (string);
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gtk_widget_set_sensitive (widget, pspec->flags & G_PARAM_WRITABLE);
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g_object_set_data_full (G_OBJECT (widget), "property",
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g_strdup (property), g_free);
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return widget;
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}
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/**
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* katze_property_label:
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* @object: a #GObject
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* @property: the name of a property
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*
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* Create a label widget displaying the name of the specified object's property.
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*
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* Return value: a new label widget
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**/
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GtkWidget*
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katze_property_label (gpointer object,
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const gchar* property)
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{
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g_return_val_if_fail (G_IS_OBJECT (object), NULL);
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GObjectClass* class = G_OBJECT_GET_CLASS (object);
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GParamSpec* pspec = g_object_class_find_property (class, property);
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if (!pspec)
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{
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g_warning (_("Property '%s' is invalid for %s"),
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property, G_OBJECT_CLASS_NAME (class));
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return gtk_label_new (property);
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}
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const gchar* nick = g_param_spec_get_nick (pspec);
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GtkWidget* widget = gtk_label_new (nick);
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return widget;
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}
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typedef struct
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{
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GtkWidget* widget;
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KatzeMenuPos position;
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} KatzePopupInfo;
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static void
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katze_widget_popup_position_menu (GtkMenu* menu,
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gint* x,
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gint* y,
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gboolean* push_in,
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gpointer user_data)
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{
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gint wx, wy;
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gint menu_width;
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GtkRequisition menu_req;
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GtkRequisition widget_req;
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KatzePopupInfo* info = user_data;
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GtkWidget* widget = info->widget;
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gint widget_height;
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/* Retrieve size and position of both widget and menu */
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if (GTK_WIDGET_NO_WINDOW (widget))
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{
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gdk_window_get_position (widget->window, &wx, &wy);
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wx += widget->allocation.x;
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wy += widget->allocation.y;
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}
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else
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gdk_window_get_origin (widget->window, &wx, &wy);
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gtk_widget_size_request (GTK_WIDGET (menu), &menu_req);
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gtk_widget_size_request (widget, &widget_req);
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menu_width = menu_req.width;
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widget_height = widget_req.height; /* Better than allocation.height */
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/* Calculate menu position */
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if (info->position == KATZE_MENU_POSITION_CURSOR)
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; /* Do nothing? */
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else if (info->position == KATZE_MENU_POSITION_RIGHT)
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{
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*x = wx + widget->allocation.width - menu_width;
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*y = wy + widget_height;
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} else if (info->position == KATZE_MENU_POSITION_LEFT)
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{
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*x = wx;
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*y = wy + widget_height;
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}
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*push_in = TRUE;
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}
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/**
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* katze_widget_popup:
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* @widget: a widget
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* @menu: the menu to popup
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* @event: a button event, or %NULL
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* @pos: the preferred positioning
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*
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* Pops up the given menu relative to @widget. Use this
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* instead of writing custom positioning functions.
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*
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* Return value: a new label widget
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**/
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void
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katze_widget_popup (GtkWidget* widget,
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GtkMenu* menu,
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GdkEventButton* event,
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KatzeMenuPos pos)
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{
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int button, event_time;
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if (event)
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{
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button = event->button;
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event_time = event->time;
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}
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else
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{
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button = 0;
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event_time = gtk_get_current_event_time ();
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}
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if (!gtk_menu_get_attach_widget (menu))
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gtk_menu_attach_to_widget (menu, widget, NULL);
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if (widget)
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{
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KatzePopupInfo info = { widget, pos };
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gtk_menu_popup (menu, NULL, NULL,
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katze_widget_popup_position_menu, &info,
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button, event_time);
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}
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else
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gtk_menu_popup (menu, NULL, NULL, NULL, NULL, button, event_time);
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}
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/**
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* katze_image_menu_item_new_ellipsized:
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* @label: a label or %NULL
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*
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* Creates an image menu item where the label is
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* reasonably ellipsized for you.
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*
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* Return value: a new label widget
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**/
|
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GtkWidget*
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katze_image_menu_item_new_ellipsized (const gchar* label)
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{
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GtkWidget* menuitem;
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GtkWidget* label_widget;
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menuitem = gtk_image_menu_item_new ();
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label_widget = gtk_label_new (label);
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/* FIXME: Should text direction be respected here? */
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gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.0);
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gtk_label_set_max_width_chars (GTK_LABEL (label_widget), 50);
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gtk_label_set_ellipsize (GTK_LABEL (label_widget), PANGO_ELLIPSIZE_MIDDLE);
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gtk_widget_show (label_widget);
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gtk_container_add (GTK_CONTAINER (menuitem), label_widget);
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return menuitem;
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}
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/**
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|
* katze_pixbuf_new_from_buffer:
|
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* @buffer: Buffer with image data
|
|
* @length: Length of the buffer
|
|
* @mime_type: a MIME type, or %NULL
|
|
* @error: return location for a #GError, or %NULL
|
|
*
|
|
* Creates a new #GdkPixbuf out of the specified buffer.
|
|
*
|
|
* You can specify a MIME type if looking at the buffer
|
|
* is not enough to determine the right type.
|
|
*
|
|
* Return value: A newly-allocated #GdkPixbuf
|
|
**/
|
|
GdkPixbuf*
|
|
katze_pixbuf_new_from_buffer (const guchar* buffer,
|
|
gsize length,
|
|
const gchar* mime_type,
|
|
GError** error)
|
|
{
|
|
/* Proposed for inclusion in GdkPixbuf
|
|
See http://bugzilla.gnome.org/show_bug.cgi?id=74291 */
|
|
GdkPixbufLoader* loader;
|
|
GdkPixbuf* pixbuf;
|
|
|
|
g_return_val_if_fail (buffer != NULL, NULL);
|
|
g_return_val_if_fail (length > 0, NULL);
|
|
|
|
if (mime_type)
|
|
{
|
|
loader = gdk_pixbuf_loader_new_with_mime_type (mime_type, error);
|
|
if (!loader)
|
|
return NULL;
|
|
}
|
|
else
|
|
loader = gdk_pixbuf_loader_new ();
|
|
if (!gdk_pixbuf_loader_write (loader, buffer, length, error))
|
|
{
|
|
g_object_unref (loader);
|
|
return NULL;
|
|
}
|
|
if (!gdk_pixbuf_loader_close (loader, error))
|
|
{
|
|
g_object_unref (loader);
|
|
return NULL;
|
|
}
|
|
|
|
pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
|
|
g_object_ref (pixbuf);
|
|
g_object_unref (loader);
|
|
return pixbuf;
|
|
}
|
|
|
|
/**
|
|
* katze_object_get_object:
|
|
* @object: a #GObject
|
|
* @property_name: the name of the property to get
|
|
*
|
|
* Retrieve the object value of the specified property.
|
|
*
|
|
* Return value: Return value: an object
|
|
**/
|
|
gpointer
|
|
katze_object_get_object (gpointer object,
|
|
const gchar* property)
|
|
{
|
|
GObject* value = NULL;
|
|
|
|
g_return_val_if_fail (G_IS_OBJECT (object), NULL);
|
|
/* FIXME: Check value type */
|
|
|
|
g_object_get (object, property, &value, NULL);
|
|
return value;
|
|
}
|