/* GTK - The GIMP Toolkit * Copyright (C) 2005 Ronald S. Bultje * Copyright (C) 2006, 2007 Christian Persch * Copyright (C) 2006 Jan Arne Petersen * Copyright (C) 2005-2007 Red Hat, Inc. * * Authors: * - Ronald S. Bultje * - Bastien Nocera * - Jan Arne Petersen * - 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. */ /* * Modified by the GTK+ Team and others 2007. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include #define _GNU_SOURCE #include #include #include #include "gtkmain.h" #include "gtkintl.h" #include "gtkrange.h" #include "gtkbindings.h" #include "gtkscale.h" #include "gtkvscale.h" #include "gtkframe.h" #include "gtkvbox.h" #include "gtkwindow.h" #include "gtkmarshalers.h" #include "gtkstock.h" #include "gtkprivate.h" #include #include #include "gtkscalebutton.h" #include "gtkalias.h" #define SCALE_SIZE 100 #define CLICK_TIMEOUT 250 enum { VALUE_CHANGED, POPUP, POPDOWN, LAST_SIGNAL }; enum { PROP_0, PROP_VALUE, PROP_SIZE, PROP_ADJUSTMENT, PROP_ICONS }; #define GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_SCALE_BUTTON, GtkScaleButtonPrivate)) struct _GtkScaleButtonPrivate { GtkWidget *dock; GtkWidget *scale; GtkWidget *image; GtkIconSize size; guint click_id; gint click_timeout; guint timeout : 1; gdouble direction; guint32 pop_time; gchar **icon_list; }; static void gtk_scale_button_class_init (GtkScaleButtonClass *klass); static void gtk_scale_button_init (GtkScaleButton *button); static void gtk_scale_button_dispose (GObject *object); static void gtk_scale_button_finalize (GObject *object); static void gtk_scale_button_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_scale_button_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static gboolean gtk_scale_button_scroll (GtkWidget *widget, GdkEventScroll *event); static void gtk_scale_button_screen_changed (GtkWidget *widget, GdkScreen *previous_screen); static gboolean gtk_scale_button_press (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_scale_button_key_release (GtkWidget *widget, GdkEventKey *event); static void gtk_scale_button_popup_from_bindings (GtkWidget *widget); static void gtk_scale_button_popdown_from_bindings (GtkWidget *widget); static gboolean cb_dock_button_press (GtkWidget *widget, GdkEventButton *event, gpointer user_data); static gboolean cb_dock_key_release (GtkWidget *widget, GdkEventKey *event, gpointer user_data); static gboolean cb_button_press (GtkWidget *widget, GdkEventButton *event, gpointer user_data); static gboolean cb_button_release (GtkWidget *widget, GdkEventButton *event, gpointer user_data); static void cb_dock_grab_notify (GtkWidget *widget, gboolean was_grabbed, gpointer user_data); static gboolean cb_dock_grab_broken_event (GtkWidget *widget, gboolean was_grabbed, gpointer user_data); static void cb_scale_grab_notify (GtkWidget *widget, gboolean was_grabbed, gpointer user_data); static void gtk_scale_button_update_icon (GtkScaleButton *button); static void gtk_scale_button_scale_value_changed(GtkRange *range); /* see below for scale definitions */ static GtkWidget *gtk_scale_button_scale_new (GtkScaleButton *button, gdouble min, gdouble max, gdouble step); static guint signals[LAST_SIGNAL] = { 0, }; G_DEFINE_TYPE (GtkScaleButton, gtk_scale_button, GTK_TYPE_BUTTON) static void gtk_scale_button_class_init (GtkScaleButtonClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); GtkBindingSet *binding_set; g_type_class_add_private (klass, sizeof (GtkScaleButtonPrivate)); gobject_class->finalize = gtk_scale_button_finalize; gobject_class->dispose = gtk_scale_button_dispose; gobject_class->set_property = gtk_scale_button_set_property; gobject_class->get_property = gtk_scale_button_get_property; widget_class->button_press_event = gtk_scale_button_press; widget_class->key_release_event = gtk_scale_button_key_release; widget_class->scroll_event = gtk_scale_button_scroll; widget_class->screen_changed = gtk_scale_button_screen_changed; g_object_class_install_property (gobject_class, PROP_VALUE, g_param_spec_double ("value", P_("Value"), P_("The value of the scale"), -G_MAXDOUBLE, G_MAXDOUBLE, 0, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_SIZE, g_param_spec_enum ("size", P_("Icon size"), P_("The icon size"), GTK_TYPE_ICON_SIZE, GTK_ICON_SIZE_SMALL_TOOLBAR, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_ADJUSTMENT, g_param_spec_object ("adjustment", P_("Adjustment"), P_("The GtkAdjustment that contains the current value of this scale button object"), GTK_TYPE_ADJUSTMENT, GTK_PARAM_READWRITE)); /** * GtkScaleButton:icons: * * The names of the icons to be used by the scale button. * The first item in the array will be used in the button * when the current value is the lowest value, the second * item for the highest value. All the subsequent icons will * be used for all the other values, spread evenly over the * range of values. * * If there's only one icon name in the @icons array, it will * be used for all the values. If only two icon names are in * the @icons array, the first one will be used for the bottom * 50% of the scale, and the second one for the top 50%. * * It is recommended to use at least 3 icons so that the * #GtkScaleButton reflects the current value of the scale * better for the users. * * Since: 2.12 */ g_object_class_install_property (gobject_class, PROP_ICONS, g_param_spec_boxed ("icons", P_("Icons"), P_("List of icon names"), G_TYPE_STRV, GTK_PARAM_READWRITE)); /** * GtkScaleButton::value-changed: * @button: the object that received the signal * * Emitted when the value field has changed. * * Since: 2.12 * */ signals[VALUE_CHANGED] = g_signal_new (I_("value-changed"), G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkScaleButtonClass, value_changed), NULL, NULL, _gtk_marshal_VOID__DOUBLE, G_TYPE_NONE, 1, G_TYPE_DOUBLE); signals[POPUP] = _gtk_binding_signal_new (I_("popup"), G_OBJECT_CLASS_TYPE (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_CALLBACK (gtk_scale_button_popup_from_bindings), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); signals[POPDOWN] = _gtk_binding_signal_new (I_("popdown"), G_OBJECT_CLASS_TYPE (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_CALLBACK (gtk_scale_button_popdown_from_bindings), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); /* Key bindings */ binding_set = gtk_binding_set_by_class (widget_class); gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "popup", 0); gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "popup", 0); gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "popup", 0); gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "popup", 0); gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "popdown", 0); } static void gtk_scale_button_init (GtkScaleButton *button) { GtkWidget *frame, *box; GtkScaleButtonPrivate *priv; button->priv = priv = GET_PRIVATE (button); priv->timeout = FALSE; priv->click_id = 0; priv->click_timeout = CLICK_TIMEOUT; gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE); gtk_button_set_focus_on_click (GTK_BUTTON (button), FALSE); /* image */ priv->image = gtk_image_new (); gtk_container_add (GTK_CONTAINER (button), priv->image); gtk_widget_show_all (priv->image); /* window */ priv->dock = gtk_window_new (GTK_WINDOW_POPUP); g_signal_connect (priv->dock, "button-press-event", G_CALLBACK (cb_dock_button_press), button); g_signal_connect (priv->dock, "key-release-event", G_CALLBACK (cb_dock_key_release), button); g_signal_connect (priv->dock, "grab-notify", G_CALLBACK (cb_dock_grab_notify), button); g_signal_connect (priv->dock, "grab-broken-event", G_CALLBACK (cb_dock_grab_broken_event), button); gtk_window_set_decorated (GTK_WINDOW (priv->dock), FALSE); /* frame */ frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT); gtk_container_add (GTK_CONTAINER (priv->dock), frame); box = gtk_vbox_new (FALSE, 0); gtk_container_add (GTK_CONTAINER (frame), box); /* + */ button->plus_button = gtk_button_new_with_label ("+"); gtk_button_set_relief (GTK_BUTTON (button->plus_button), GTK_RELIEF_NONE); g_signal_connect (button->plus_button, "button-press-event", G_CALLBACK (cb_button_press), button); g_signal_connect (button->plus_button, "button-release-event", G_CALLBACK (cb_button_release), button); gtk_box_pack_start (GTK_BOX (box), button->plus_button, TRUE, FALSE, 0); /* scale */ priv->scale = gtk_scale_button_scale_new (button, 0., 100., 2.); gtk_widget_set_size_request (priv->scale, -1, SCALE_SIZE); gtk_scale_set_draw_value (GTK_SCALE (priv->scale), FALSE); gtk_range_set_inverted (GTK_RANGE (priv->scale), TRUE); gtk_box_pack_start (GTK_BOX (box), priv->scale, TRUE, FALSE, 0); g_signal_connect (priv->scale, "grab-notify", G_CALLBACK (cb_scale_grab_notify), button); /* - */ button->minus_button = gtk_button_new_with_label ("-"); gtk_button_set_relief (GTK_BUTTON (button->minus_button), GTK_RELIEF_NONE); g_signal_connect (button->minus_button, "button-press-event", G_CALLBACK (cb_button_press), button); g_signal_connect (button->minus_button, "button-release-event", G_CALLBACK (cb_button_release), button); gtk_box_pack_start (GTK_BOX (box), button->minus_button, TRUE, FALSE, 0); /* set button text and size */ priv->size = GTK_ICON_SIZE_SMALL_TOOLBAR; gtk_scale_button_update_icon (button); } static void gtk_scale_button_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkScaleButton *button; button = GTK_SCALE_BUTTON (object); switch (prop_id) { case PROP_VALUE: gtk_scale_button_set_value (button, g_value_get_double (value)); break; case PROP_SIZE: { GtkIconSize size; size = g_value_get_enum (value); if (button->priv->size != size) { button->priv->size = size; gtk_scale_button_update_icon (button); } } break; case PROP_ADJUSTMENT: gtk_scale_button_set_adjustment (button, g_value_get_object (value)); break; case PROP_ICONS: gtk_scale_button_set_icons (button, (const gchar **)g_value_get_boxed (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_scale_button_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkScaleButton *button; GtkScaleButtonPrivate *priv; button = GTK_SCALE_BUTTON (object); priv = button->priv; switch (prop_id) { case PROP_VALUE: g_value_set_float (value, gtk_scale_button_get_value (button)); break; case PROP_SIZE: g_value_set_enum (value, priv->size); break; case PROP_ADJUSTMENT: g_value_set_object (value, gtk_scale_button_get_adjustment (button)); break; case PROP_ICONS: g_value_set_boxed (value, priv->icon_list); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_scale_button_finalize (GObject *object) { GtkScaleButton *button = GTK_SCALE_BUTTON (object); GtkScaleButtonPrivate *priv = button->priv; if (priv->icon_list) { g_strfreev (priv->icon_list); priv->icon_list = NULL; } G_OBJECT_CLASS (gtk_scale_button_parent_class)->finalize (object); } static void gtk_scale_button_dispose (GObject *object) { GtkScaleButton *button = GTK_SCALE_BUTTON (object); GtkScaleButtonPrivate *priv = button->priv; if (priv->dock) { gtk_widget_destroy (priv->dock); priv->dock = NULL; } if (priv->click_id != 0) { g_source_remove (priv->click_id); priv->click_id = 0; } G_OBJECT_CLASS (gtk_scale_button_parent_class)->dispose (object); } /** * gtk_scale_button_new * @size: a stock icon size * @min: the minimum value of the scale (usually 0) * @max: the maximum value of the scale (usually 100) * @step: the stepping of value when a scroll-wheel event, * or up/down arrow event occurs (usually 2) * @icons: a %NULL-terminated array of icon names, or %NULL if * you want to set the list later with gtk_scale_button_set_icons() * * Creates a #GtkScaleButton, with a range between @min and @max, with * a stepping of @step. * * Return value: a new #GtkScaleButton * * Since: 2.12 */ GtkWidget * gtk_scale_button_new (GtkIconSize size, gdouble min, gdouble max, gdouble step, const gchar **icons) { GtkScaleButton *button; GtkObject *adj; adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0); button = g_object_new (GTK_TYPE_SCALE_BUTTON, "adjustment", adj, "icons", icons, "size", size, NULL); return GTK_WIDGET (button); } /** * gtk_scale_button_get_value * @button: a #GtkScaleButton * * Gets the current value of the scale button. * * Return value: current value of the scale button * * Since: 2.12 */ gdouble gtk_scale_button_get_value (GtkScaleButton * button) { GtkScaleButtonPrivate *priv; g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), 0); priv = button->priv; return gtk_range_get_value (GTK_RANGE (priv->scale)); } /** * gtk_scale_button_set_value * @button: a #GtkScaleButton * @value: new value of the scale button * * Sets the current value of the scale; if the value is outside * the minimum or maximum range values, it will be clamped to fit * inside them. The scale button emits the #GtkScaleButton::value-changed * signal if the value changes. * * Since: 2.12 */ void gtk_scale_button_set_value (GtkScaleButton *button, gdouble value) { GtkScaleButtonPrivate *priv; g_return_if_fail (GTK_IS_SCALE_BUTTON (button)); priv = button->priv; gtk_range_set_value (GTK_RANGE (priv->scale), value); } /** * gtk_scale_button_set_icons * @button: a #GtkScaleButton * @icons: a %NULL-terminated array of icon names * * Sets the icons to be used by the scale button. * For details, see the #GtkScaleButton:icons property. * * Since 2.12 */ void gtk_scale_button_set_icons (GtkScaleButton *button, const gchar **icons) { GtkScaleButtonPrivate *priv; gchar **tmp; g_return_if_fail (GTK_IS_SCALE_BUTTON (button)); priv = button->priv; tmp = priv->icon_list; priv->icon_list = g_strdupv ((gchar **) icons); g_strfreev (tmp); gtk_scale_button_update_icon (button); g_object_notify (G_OBJECT (button), "icons"); } /** * gtk_scale_button_get_adjustment: * @button: a #GtkScaleButton * * Gets the #GtkAdjustment associated with the #GtkScaleButton's scale. * See gtk_range_get_adjustment() for details. * * Returns: the adjustment associated with the scale * * Since: 2.12 */ GtkAdjustment* gtk_scale_button_get_adjustment (GtkScaleButton *button) { GtkRange *range; g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL); range = GTK_RANGE (button->priv->scale); g_return_val_if_fail (range != NULL, NULL); return gtk_range_get_adjustment (range); } /** * gtk_scale_button_set_adjustment * @button: a #GtkScaleButton * @adjustment: a #GtkAdjustment * * Sets the #GtkAdjustment to be used as a model * for the #GtkScaleButton's scale. * See gtk_range_set_adjustment() for details. * * Since: 2.12 */ void gtk_scale_button_set_adjustment (GtkScaleButton *button, GtkAdjustment *adjustment) { g_return_if_fail (GTK_IS_SCALE_BUTTON (button)); g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); gtk_range_set_adjustment (GTK_RANGE (button->priv->scale), adjustment); g_object_notify (G_OBJECT (button), "adjustment"); } /* * button callbacks. */ static gboolean gtk_scale_button_scroll (GtkWidget *widget, GdkEventScroll *event) { GtkScaleButton *button; GtkScaleButtonPrivate *priv; GtkAdjustment *adj; gdouble d; button = GTK_SCALE_BUTTON (widget); priv = button->priv; adj = gtk_range_get_adjustment (GTK_RANGE (priv->scale)); if (event->type != GDK_SCROLL) return FALSE; d = gtk_scale_button_get_value (button); if (event->direction == GDK_SCROLL_UP) { d += adj->step_increment; if (d > adj->upper) d = adj->upper; } else { d -= adj->step_increment; if (d < adj->lower) d = adj->lower; } gtk_scale_button_set_value (button, d); return TRUE; } static void gtk_scale_button_screen_changed (GtkWidget *widget, GdkScreen *previous_screen) { GtkScaleButton *button = (GtkScaleButton *) widget; GtkScaleButtonPrivate *priv; GdkScreen *screen; GValue value = { 0, }; if (gtk_widget_has_screen (widget) == FALSE) return; priv = button->priv; screen = gtk_widget_get_screen (widget); g_value_init (&value, G_TYPE_INT); if (gdk_screen_get_setting (screen, "gtk-double-click-time", &value) == FALSE) { priv->click_timeout = CLICK_TIMEOUT; return; } priv->click_timeout = g_value_get_int (&value); } static gboolean gtk_scale_popup (GtkWidget *widget, GdkEvent *event, guint32 time) { GtkScaleButton *button; GtkScaleButtonPrivate *priv; GtkAdjustment *adj; gint x, y, m, dx, dy, sx, sy, ystartoff; gdouble v; GdkDisplay *display; GdkScreen *screen; button = GTK_SCALE_BUTTON (widget); priv = button->priv; adj = gtk_range_get_adjustment (GTK_RANGE (priv->scale)); display = gtk_widget_get_display (widget); screen = gtk_widget_get_screen (widget); /* position roughly */ gtk_window_set_screen (GTK_WINDOW (priv->dock), screen); gdk_window_get_origin (widget->window, &x, &y); x += widget->allocation.x; y += widget->allocation.y; gtk_window_move (GTK_WINDOW (priv->dock), x, y - (SCALE_SIZE / 2)); gtk_widget_show_all (priv->dock); gdk_window_get_origin (priv->dock->window, &dx, &dy); dy += priv->dock->allocation.y; gdk_window_get_origin (priv->scale->window, &sx, &sy); sy += priv->scale->allocation.y; ystartoff = sy - dy; priv->timeout = TRUE; /* position (needs widget to be shown already) */ v = gtk_scale_button_get_value (button) / (adj->upper - adj->lower); x += (widget->allocation.width - priv->dock->allocation.width) / 2; y -= ystartoff; y -= GTK_RANGE (priv->scale)->min_slider_size / 2; m = priv->scale->allocation.height - GTK_RANGE (priv->scale)->min_slider_size; y -= m * (1.0 - v); /* Make sure the dock stays inside the monitor */ if (event->type == GDK_BUTTON_PRESS) { int monitor; GdkEventButton *button_event = (GdkEventButton *) event; GdkRectangle rect; GtkWidget *d; d = GTK_WIDGET (priv->dock); monitor = gdk_screen_get_monitor_at_point (screen, button_event->x_root, button_event->y_root); gdk_screen_get_monitor_geometry (screen, monitor, &rect); y += button_event->y; if (y < rect.y) y = rect.y; else if (y + d->allocation.height > rect.height + rect.y) y = rect.y + rect.height - d->allocation.height; if (x < rect.x) x = rect.x; else if (x + d->allocation.width > rect.width + rect.x) x = rect.x + rect.width - d->allocation.width; } gtk_window_move (GTK_WINDOW (priv->dock), x, y); if (event->type == GDK_BUTTON_PRESS) GTK_WIDGET_CLASS (gtk_scale_button_parent_class)->button_press_event (widget, (GdkEventButton *) event); /* grab focus */ gtk_grab_add (priv->dock); if (gdk_pointer_grab (priv->dock->window, TRUE, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK, NULL, NULL, time) != GDK_GRAB_SUCCESS) { gtk_grab_remove (priv->dock); gtk_widget_hide (priv->dock); return FALSE; } if (gdk_keyboard_grab (priv->dock->window, TRUE, time) != GDK_GRAB_SUCCESS) { gdk_display_pointer_ungrab (display, time); gtk_grab_remove (priv->dock); gtk_widget_hide (priv->dock); return FALSE; } gtk_widget_grab_focus (priv->dock); if (event->type == GDK_BUTTON_PRESS) { GdkEventButton *e; GdkEventButton *button_event = (GdkEventButton *) event; /* forward event to the slider */ e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event); e->window = priv->scale->window; /* position: the X position isn't relevant, halfway will work just fine. * The vertical position should be *exactly* in the middle of the slider * of the scale; if we don't do that correctly, it'll move from its current * position, which means a position change on-click, which is bad. */ e->x = priv->scale->allocation.width / 2; m = priv->scale->allocation.height - GTK_RANGE (priv->scale)->min_slider_size; e->y = ((1.0 - v) * m) + GTK_RANGE (priv->scale)->min_slider_size / 2; gtk_widget_event (priv->scale, (GdkEvent *) e); e->window = button_event->window; gdk_event_free ((GdkEvent *) e); } gtk_widget_grab_focus (priv->scale); priv->pop_time = time; return TRUE; } static gboolean gtk_scale_button_press (GtkWidget *widget, GdkEventButton *event) { return gtk_scale_popup (widget, (GdkEvent *) event, event->time); } static void gtk_scale_button_popup_from_bindings (GtkWidget *widget) { GdkEvent *ev; ev = gdk_event_new (GDK_KEY_RELEASE); gtk_scale_popup (widget, ev, GDK_CURRENT_TIME); gdk_event_free (ev); } static gboolean gtk_scale_button_key_release (GtkWidget *widget, GdkEventKey *event) { return gtk_bindings_activate_event (GTK_OBJECT (widget), event); } /* This is called when the grab is broken for * either the dock, or the scale itself */ static void gtk_scale_button_grab_notify (GtkScaleButton *button, gboolean was_grabbed) { GdkDisplay *display; GtkScaleButtonPrivate *priv; if (was_grabbed != FALSE) return; priv = button->priv; if (gtk_widget_is_ancestor (gtk_grab_get_current (), priv->dock)) return; display = gtk_widget_get_display (priv->dock); gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME); gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME); gtk_grab_remove (priv->dock); /* hide again */ gtk_widget_hide (priv->dock); priv->timeout = FALSE; } /* * +/- button callbacks. */ static gboolean cb_button_timeout (gpointer user_data) { GtkScaleButton *button; GtkScaleButtonPrivate *priv; GtkAdjustment *adj; gdouble val; gboolean res = TRUE; button = GTK_SCALE_BUTTON (user_data); priv = button->priv; if (priv->click_id == 0) return FALSE; adj = gtk_range_get_adjustment (GTK_RANGE (priv->scale)); val = gtk_scale_button_get_value (button); val += priv->direction; if (val <= adj->lower) { res = FALSE; val = adj->lower; } else if (val > adj->upper) { res = FALSE; val = adj->upper; } gtk_scale_button_set_value (button, val); if (!res) { g_source_remove (priv->click_id); priv->click_id = 0; } return res; } static gboolean cb_button_press (GtkWidget *widget, GdkEventButton *event, gpointer user_data) { GtkScaleButton *button; GtkScaleButtonPrivate *priv; GtkAdjustment *adj; button = GTK_SCALE_BUTTON (user_data); priv = button->priv; adj = gtk_range_get_adjustment (GTK_RANGE (priv->scale)); if (priv->click_id != 0) g_source_remove (priv->click_id); if (widget == button->plus_button) priv->direction = fabs (adj->page_increment); else priv->direction = - fabs (adj->page_increment); priv->click_id = gdk_threads_add_timeout (priv->click_timeout, cb_button_timeout, button); cb_button_timeout (button); return TRUE; } static gboolean cb_button_release (GtkWidget *widget, GdkEventButton *event, gpointer user_data) { GtkScaleButton *button; GtkScaleButtonPrivate *priv; button = GTK_SCALE_BUTTON (user_data); priv = button->priv; if (priv->click_id != 0) { g_source_remove (priv->click_id); priv->click_id = 0; } return TRUE; } static void cb_dock_grab_notify (GtkWidget *widget, gboolean was_grabbed, gpointer user_data) { GtkScaleButton *button = (GtkScaleButton *) user_data; gtk_scale_button_grab_notify (button, was_grabbed); } static gboolean cb_dock_grab_broken_event (GtkWidget *widget, gboolean was_grabbed, gpointer user_data) { GtkScaleButton *button = (GtkScaleButton *) user_data; gtk_scale_button_grab_notify (button, FALSE); return FALSE; } /* * Scale callbacks. */ static void gtk_scale_button_release_grab (GtkScaleButton *button, GdkEventButton *event) { GdkEventButton *e; GdkDisplay *display; GtkScaleButtonPrivate *priv; priv = button->priv; /* ungrab focus */ display = gtk_widget_get_display (GTK_WIDGET (button)); gdk_display_keyboard_ungrab (display, event->time); gdk_display_pointer_ungrab (display, event->time); gtk_grab_remove (priv->dock); /* hide again */ gtk_widget_hide (priv->dock); priv->timeout = FALSE; e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event); e->window = GTK_WIDGET (button)->window; e->type = GDK_BUTTON_RELEASE; gtk_widget_event (GTK_WIDGET (button), (GdkEvent *) e); e->window = event->window; gdk_event_free ((GdkEvent *) e); } static gboolean cb_dock_button_press (GtkWidget *widget, GdkEventButton *event, gpointer user_data) { GtkScaleButton *button = GTK_SCALE_BUTTON (user_data); if (event->type == GDK_BUTTON_PRESS) { gtk_scale_button_release_grab (button, event); return TRUE; } return FALSE; } static void gtk_scale_button_popdown_from_bindings (GtkWidget *widget) { GtkScaleButton *button; GtkScaleButtonPrivate *priv; GdkDisplay *display; button = GTK_SCALE_BUTTON (widget); priv = button->priv; /* ungrab focus */ display = gtk_widget_get_display (widget); gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME); gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME); gtk_grab_remove (priv->dock); /* hide again */ gtk_widget_hide (priv->dock); priv->timeout = FALSE; } static gboolean cb_dock_key_release (GtkWidget *widget, GdkEventKey *event, gpointer user_data) { if (event->keyval == GDK_Escape) { gtk_scale_button_popdown_from_bindings (GTK_WIDGET (user_data)); return TRUE; } if (!gtk_bindings_activate_event (GTK_OBJECT (widget), event)) { /* The popup hasn't managed the event, pass onto the button */ gtk_bindings_activate_event (GTK_OBJECT (user_data), event); } return TRUE; } static void cb_scale_grab_notify (GtkWidget *widget, gboolean was_grabbed, gpointer user_data) { GtkScaleButton *button = (GtkScaleButton *) user_data; gtk_scale_button_grab_notify (button, was_grabbed); } /* * Scale stuff. */ #define GTK_TYPE_SCALE_BUTTON_SCALE \ (gtk_scale_button_scale_get_type ()) #define GTK_SCALE_BUTTON_SCALE(obj) \ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCALE_BUTTON_SCALE, \ GtkScaleButtonScale)) typedef struct _GtkScaleButtonScaleClass { GtkVScaleClass parent_class; } GtkScaleButtonScaleClass; typedef struct _GtkScaleButtonScale { GtkVScale parent; GtkScaleButton *button; } GtkScaleButtonScale; static GType gtk_scale_button_scale_get_type (void); static void gtk_scale_button_scale_class_init (GtkScaleButtonScaleClass *klass); static gboolean gtk_scale_button_scale_press (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_scale_button_scale_release (GtkWidget *widget, GdkEventButton *event); G_DEFINE_TYPE (GtkScaleButtonScale, gtk_scale_button_scale, GTK_TYPE_VSCALE) static void gtk_scale_button_scale_class_init (GtkScaleButtonScaleClass *klass) { GtkWidgetClass *gtkwidget_class = GTK_WIDGET_CLASS (klass); GtkRangeClass *gtkrange_class = GTK_RANGE_CLASS (klass); gtkwidget_class->button_press_event = gtk_scale_button_scale_press; gtkwidget_class->button_release_event = gtk_scale_button_scale_release; gtkrange_class->value_changed = gtk_scale_button_scale_value_changed; } static void gtk_scale_button_scale_init (GtkScaleButtonScale *scale) { } static GtkWidget * gtk_scale_button_scale_new (GtkScaleButton *button, gdouble min, gdouble max, gdouble step) { GtkScaleButtonScale *scale; GtkScaleButtonPrivate *priv; GtkObject *adj; priv = button->priv; scale = g_object_new (GTK_TYPE_SCALE_BUTTON_SCALE, NULL); adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0); gtk_range_set_adjustment (GTK_RANGE (scale), GTK_ADJUSTMENT (adj)); scale->button = button; return GTK_WIDGET (scale); } static gboolean gtk_scale_button_scale_press (GtkWidget *widget, GdkEventButton *event) { GtkScaleButtonScale *scale; GtkScaleButtonPrivate *priv; scale = GTK_SCALE_BUTTON_SCALE (widget); priv = scale->button->priv; /* the scale will grab input; if we have input grabbed, all goes * horribly wrong, so let's not do that. */ gtk_grab_remove (priv->dock); return GTK_WIDGET_CLASS (gtk_scale_button_scale_parent_class)->button_press_event (widget, event); } static gboolean gtk_scale_button_scale_release (GtkWidget *widget, GdkEventButton *event) { GtkScaleButtonScale *scale; GtkScaleButtonPrivate *priv; GtkWidgetClass *widget_class; gboolean res; scale = GTK_SCALE_BUTTON_SCALE (widget); priv = scale->button->priv; widget_class = GTK_WIDGET_CLASS (gtk_scale_button_scale_parent_class); if (priv->timeout) { /* if we did a quick click, leave the window open; else, hide it */ if (event->time > priv->pop_time + priv->click_timeout) { gtk_scale_button_release_grab (scale->button, event); widget_class->button_release_event (widget, event); return TRUE; } priv->timeout = FALSE; } res = widget_class->button_release_event (widget, event); /* the scale will release input; right after that, we *have to* grab * it back so we can catch out-of-scale clicks and hide the popup, * so I basically want a g_signal_connect_after_always(), but I can't * find that, so we do this complex 'first-call-parent-then-do-actual- * action' thingy... */ gtk_grab_add (priv->dock); return res; } static void gtk_scale_button_update_icon (GtkScaleButton *button) { GtkScaleButtonPrivate *priv; GtkRange *range; GtkAdjustment *adj; gdouble value; const gchar *name; guint num_icons; priv = button->priv; if (!priv->icon_list || priv->icon_list[0] == '\0') { gtk_image_set_from_stock (GTK_IMAGE (priv->image), GTK_STOCK_MISSING_IMAGE, priv->size); return; } num_icons = g_strv_length (priv->icon_list); /* The 1-icon special case */ if (num_icons == 1) { gtk_image_set_from_icon_name (GTK_IMAGE (priv->image), priv->icon_list[0], priv->size); return; } range = GTK_RANGE (priv->scale); adj = gtk_range_get_adjustment (range); value = gtk_scale_button_get_value (button); /* The 2-icons special case */ if (num_icons == 2) { gdouble limit; limit = (adj->upper - adj->lower) / 2 + adj->lower; if (value < limit) name = priv->icon_list[0]; else name = priv->icon_list[1]; gtk_image_set_from_icon_name (GTK_IMAGE (priv->image), name, priv->size); return; } /* With 3 or more icons */ if (value == adj->lower) { name = priv->icon_list[0]; } else if (value == adj->upper) { name = priv->icon_list[1]; } else { gdouble step; guint i; step = (adj->upper - adj->lower) / (num_icons - 2); i = (guint) ((value - adj->lower) / step) + 2; g_assert (i < num_icons); name = priv->icon_list[i]; } gtk_image_set_from_icon_name (GTK_IMAGE (priv->image), name, priv->size); } static void gtk_scale_button_scale_value_changed (GtkRange *range) { GtkScaleButtonScale *scale = GTK_SCALE_BUTTON_SCALE (range); GtkScaleButton *button = scale->button; gdouble value; value = gtk_range_get_value (range); gtk_scale_button_update_icon (button); g_signal_emit (button, signals[VALUE_CHANGED], 0, value); g_object_notify (G_OBJECT (button), "value"); } #define __GTK_SCALE_BUTTON_C__ #include "gtkaliasdef.c"