/* gtktooltip.c * * Copyright (C) 2006-2007 Imendio AB * Contact: Kristian Rietveld * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library. If not, see . */ #include "config.h" #include "gtktooltip.h" #include "gtktooltipprivate.h" #include #include #include "gtkintl.h" #include "gtkwindow.h" #include "gtkmain.h" #include "gtksettings.h" #include "gtksizerequest.h" #include "gtkstylecontext.h" #include "gtktooltipwindowprivate.h" #include "gtkwindowprivate.h" #include "gtkwidgetprivate.h" #include "gtkaccessible.h" #include "gtknative.h" /** * SECTION:gtktooltip * @Short_description: Add tips to your widgets * @Title: GtkTooltip * * Basic tooltips can be realized simply by using gtk_widget_set_tooltip_text() * or gtk_widget_set_tooltip_markup() without any explicit tooltip object. * * When you need a tooltip with a little more fancy contents, like adding an * image, or you want the tooltip to have different contents per #GtkTreeView * row or cell, you will have to do a little more work: * * - Set the #GtkWidget:has-tooltip property to %TRUE, this will make GTK+ * monitor the widget for motion and related events which are needed to * determine when and where to show a tooltip. * * - Connect to the #GtkWidget::query-tooltip signal. This signal will be * emitted when a tooltip is supposed to be shown. One of the arguments passed * to the signal handler is a GtkTooltip object. This is the object that we * are about to display as a tooltip, and can be manipulated in your callback * using functions like gtk_tooltip_set_icon(). There are functions for setting * the tooltip’s markup, setting an image from a named icon, or even putting in * a custom widget. * * Return %TRUE from your query-tooltip handler. This causes the tooltip to be * show. If you return %FALSE, it will not be shown. * * In the probably rare case where you want to have even more control over the * tooltip that is about to be shown, you can set your own #GtkWindow which * will be used as tooltip window. This works as follows: * * - Set #GtkWidget:has-tooltip and connect to #GtkWidget::query-tooltip as before. * Use gtk_widget_set_tooltip_window() to set a #GtkWindow created by you as * tooltip window. * * - In the #GtkWidget::query-tooltip callback you can access your window using * gtk_widget_get_tooltip_window() and manipulate as you wish. The semantics of * the return value are exactly as before, return %TRUE to show the window, * %FALSE to not show it. */ #define HOVER_TIMEOUT 500 #define BROWSE_TIMEOUT 60 #define BROWSE_DISABLE_TIMEOUT 500 #define GTK_TOOLTIP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TOOLTIP, GtkTooltipClass)) #define GTK_IS_TOOLTIP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TOOLTIP)) #define GTK_TOOLTIP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TOOLTIP, GtkTooltipClass)) /* We keep a single GtkTooltip object per display. The tooltip object * owns a GtkTooltipWindow widget, which is using a popup surface, similar * to what a GtkPopover does. It gets reparented to the right native widget * whenever a tooltip is to be shown. The tooltip object keeps a weak * ref on the native in order to remove the tooltip window when the * native goes away. */ typedef struct _GtkTooltipClass GtkTooltipClass; struct _GtkTooltip { GObject parent_instance; GtkWidget *window; GtkWidget *tooltip_widget; GtkWidget *native; guint timeout_id; guint browse_mode_timeout_id; GdkRectangle tip_area; guint browse_mode_enabled : 1; guint tip_area_set : 1; guint custom_was_reset : 1; }; struct _GtkTooltipClass { GObjectClass parent_class; }; #define GTK_TOOLTIP_VISIBLE(tooltip) ((tooltip)->window && gtk_widget_get_visible (GTK_WIDGET((tooltip)->window))) static void gtk_tooltip_dispose (GObject *object); static void gtk_tooltip_window_hide (GtkWidget *widget, gpointer user_data); static void gtk_tooltip_display_closed (GdkDisplay *display, gboolean was_error, GtkTooltip *tooltip); static void gtk_tooltip_set_surface (GtkTooltip *tooltip, GdkSurface *surface); static void gtk_tooltip_handle_event_internal (GdkEventType event_type, GdkSurface *surface, GtkWidget *target_widget, gdouble dx, gdouble dy); static GQuark quark_current_tooltip; G_DEFINE_TYPE (GtkTooltip, gtk_tooltip, G_TYPE_OBJECT); static void gtk_tooltip_class_init (GtkTooltipClass *klass) { GObjectClass *object_class; quark_current_tooltip = g_quark_from_static_string ("gdk-display-current-tooltip"); object_class = G_OBJECT_CLASS (klass); object_class->dispose = gtk_tooltip_dispose; } static void gtk_tooltip_init (GtkTooltip *tooltip) { tooltip->timeout_id = 0; tooltip->browse_mode_timeout_id = 0; tooltip->browse_mode_enabled = FALSE; tooltip->tooltip_widget = NULL; tooltip->native = NULL; tooltip->window = gtk_tooltip_window_new (); g_object_ref_sink (tooltip->window); g_signal_connect (tooltip->window, "hide", G_CALLBACK (gtk_tooltip_window_hide), tooltip); } static void gtk_tooltip_dispose (GObject *object) { GtkTooltip *tooltip = GTK_TOOLTIP (object); if (tooltip->timeout_id) { g_source_remove (tooltip->timeout_id); tooltip->timeout_id = 0; } if (tooltip->browse_mode_timeout_id) { g_source_remove (tooltip->browse_mode_timeout_id); tooltip->browse_mode_timeout_id = 0; } gtk_tooltip_set_custom (tooltip, NULL); gtk_tooltip_set_surface (tooltip, NULL); if (tooltip->window) { GdkDisplay *display; display = gtk_widget_get_display (tooltip->window); g_signal_handlers_disconnect_by_func (display, gtk_tooltip_display_closed, tooltip); gtk_tooltip_window_set_relative_to (GTK_TOOLTIP_WINDOW (tooltip->window), NULL); g_clear_object (&tooltip->window); } G_OBJECT_CLASS (gtk_tooltip_parent_class)->dispose (object); } /* public API */ /** * gtk_tooltip_set_markup: * @tooltip: a #GtkTooltip * @markup: (allow-none): a markup string (see [Pango markup format][PangoMarkupFormat]) or %NULL * * Sets the text of the tooltip to be @markup, which is marked up * with the [Pango text markup language][PangoMarkupFormat]. * If @markup is %NULL, the label will be hidden. */ void gtk_tooltip_set_markup (GtkTooltip *tooltip, const gchar *markup) { g_return_if_fail (GTK_IS_TOOLTIP (tooltip)); gtk_tooltip_window_set_label_markup (GTK_TOOLTIP_WINDOW (tooltip->window), markup); } /** * gtk_tooltip_set_text: * @tooltip: a #GtkTooltip * @text: (allow-none): a text string or %NULL * * Sets the text of the tooltip to be @text. If @text is %NULL, the label * will be hidden. See also gtk_tooltip_set_markup(). */ void gtk_tooltip_set_text (GtkTooltip *tooltip, const gchar *text) { g_return_if_fail (GTK_IS_TOOLTIP (tooltip)); gtk_tooltip_window_set_label_text (GTK_TOOLTIP_WINDOW (tooltip->window), text); } /** * gtk_tooltip_set_icon: * @tooltip: a #GtkTooltip * @paintable: (allow-none): a #GdkPaintable, or %NULL * * Sets the icon of the tooltip (which is in front of the text) to be * @paintable. If @paintable is %NULL, the image will be hidden. */ void gtk_tooltip_set_icon (GtkTooltip *tooltip, GdkPaintable *paintable) { g_return_if_fail (GTK_IS_TOOLTIP (tooltip)); g_return_if_fail (paintable == NULL || GDK_IS_PAINTABLE (paintable)); gtk_tooltip_window_set_image_icon (GTK_TOOLTIP_WINDOW (tooltip->window), paintable); } /** * gtk_tooltip_set_icon_from_icon_name: * @tooltip: a #GtkTooltip * @icon_name: (allow-none): an icon name, or %NULL * * Sets the icon of the tooltip (which is in front of the text) to be * the icon indicated by @icon_name with the size indicated * by @size. If @icon_name is %NULL, the image will be hidden. */ void gtk_tooltip_set_icon_from_icon_name (GtkTooltip *tooltip, const gchar *icon_name) { g_return_if_fail (GTK_IS_TOOLTIP (tooltip)); gtk_tooltip_window_set_image_icon_from_name (GTK_TOOLTIP_WINDOW (tooltip->window), icon_name); } /** * gtk_tooltip_set_icon_from_gicon: * @tooltip: a #GtkTooltip * @gicon: (allow-none): a #GIcon representing the icon, or %NULL * * Sets the icon of the tooltip (which is in front of the text) * to be the icon indicated by @gicon with the size indicated * by @size. If @gicon is %NULL, the image will be hidden. */ void gtk_tooltip_set_icon_from_gicon (GtkTooltip *tooltip, GIcon *gicon) { g_return_if_fail (GTK_IS_TOOLTIP (tooltip)); gtk_tooltip_window_set_image_icon_from_gicon (GTK_TOOLTIP_WINDOW (tooltip->window), gicon); } /** * gtk_tooltip_set_custom: * @tooltip: a #GtkTooltip * @custom_widget: (allow-none): a #GtkWidget, or %NULL to unset the old custom widget. * * Replaces the widget packed into the tooltip with * @custom_widget. @custom_widget does not get destroyed when the tooltip goes * away. * By default a box with a #GtkImage and #GtkLabel is embedded in * the tooltip, which can be configured using gtk_tooltip_set_markup() * and gtk_tooltip_set_icon(). */ void gtk_tooltip_set_custom (GtkTooltip *tooltip, GtkWidget *custom_widget) { g_return_if_fail (GTK_IS_TOOLTIP (tooltip)); g_return_if_fail (custom_widget == NULL || GTK_IS_WIDGET (custom_widget)); /* The custom widget has been updated from the query-tooltip * callback, so we do not want to reset the custom widget later on. */ tooltip->custom_was_reset = TRUE; gtk_tooltip_window_set_custom_widget (GTK_TOOLTIP_WINDOW (tooltip->window), custom_widget); } /** * gtk_tooltip_set_tip_area: * @tooltip: a #GtkTooltip * @rect: a #GdkRectangle * * Sets the area of the widget, where the contents of this tooltip apply, * to be @rect (in widget coordinates). This is especially useful for * properly setting tooltips on #GtkTreeView rows and cells, #GtkIconViews, * etc. * * For setting tooltips on #GtkTreeView, please refer to the convenience * functions for this: gtk_tree_view_set_tooltip_row() and * gtk_tree_view_set_tooltip_cell(). */ void gtk_tooltip_set_tip_area (GtkTooltip *tooltip, const GdkRectangle *rect) { g_return_if_fail (GTK_IS_TOOLTIP (tooltip)); if (!rect) tooltip->tip_area_set = FALSE; else { tooltip->tip_area_set = TRUE; tooltip->tip_area = *rect; } } /** * gtk_tooltip_trigger_tooltip_query: * @display: a #GdkDisplay * * Triggers a new tooltip query on @display, in order to update the current * visible tooltip, or to show/hide the current tooltip. This function is * useful to call when, for example, the state of the widget changed by a * key press. */ void gtk_tooltip_trigger_tooltip_query (GtkWidget *widget) { GdkDisplay *display; double x, y; GdkSurface *surface; GdkDevice *device; GtkWidget *toplevel; int dx, dy; g_return_if_fail (GTK_IS_WIDGET (widget)); display = gtk_widget_get_display (widget); /* Trigger logic as if the mouse moved */ device = gdk_seat_get_pointer (gdk_display_get_default_seat (display)); surface = gdk_device_get_surface_at_position (device, &x, &y); if (!surface) return; toplevel = GTK_WIDGET (gtk_widget_get_root (widget)); if (toplevel == NULL) return; if (gtk_native_get_surface (GTK_NATIVE (toplevel)) != surface) return; gtk_widget_translate_coordinates (toplevel, widget, round (x), round (y), &dx, &dy); gtk_tooltip_handle_event_internal (GDK_MOTION_NOTIFY, surface, widget, dx, dy); } static void gtk_tooltip_window_hide (GtkWidget *widget, gpointer user_data) { GtkTooltip *tooltip = GTK_TOOLTIP (user_data); gtk_tooltip_set_custom (tooltip, NULL); } GtkWidget * _gtk_widget_find_at_coords (GdkSurface *surface, gint surface_x, gint surface_y, gint *widget_x, gint *widget_y) { GtkWidget *event_widget; GtkWidget *picked_widget; g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL); event_widget = gtk_native_get_for_surface (surface); if (!event_widget) return NULL; picked_widget = gtk_widget_pick (event_widget, surface_x, surface_y, GTK_PICK_INSENSITIVE); if (picked_widget != NULL) gtk_widget_translate_coordinates (event_widget, picked_widget, surface_x, surface_y, widget_x, widget_y); return picked_widget; } static gint tooltip_browse_mode_expired (gpointer data) { GtkTooltip *tooltip; GdkDisplay *display; tooltip = GTK_TOOLTIP (data); tooltip->browse_mode_enabled = FALSE; tooltip->browse_mode_timeout_id = 0; if (tooltip->timeout_id) { g_source_remove (tooltip->timeout_id); tooltip->timeout_id = 0; } /* destroy tooltip */ display = gtk_widget_get_display (tooltip->window); g_object_set_qdata (G_OBJECT (display), quark_current_tooltip, NULL); return FALSE; } static void gtk_tooltip_display_closed (GdkDisplay *display, gboolean was_error, GtkTooltip *tooltip) { if (tooltip->timeout_id) { g_source_remove (tooltip->timeout_id); tooltip->timeout_id = 0; } g_object_set_qdata (G_OBJECT (display), quark_current_tooltip, NULL); } static void native_weak_notify (gpointer data, GObject *former_object) { GtkTooltip *tooltip = data; gtk_tooltip_window_set_relative_to (GTK_TOOLTIP_WINDOW (tooltip->window), NULL); tooltip->native = NULL; } static void gtk_tooltip_set_surface (GtkTooltip *tooltip, GdkSurface *surface) { GtkWidget *native; if (surface) native = gtk_native_get_for_surface (surface); else native = NULL; if (tooltip->native == native) return; if (GTK_IS_TOOLTIP_WINDOW (native)) return; if (tooltip->native) g_object_weak_unref (G_OBJECT (tooltip->native), native_weak_notify, tooltip); tooltip->native = native; if (tooltip->native) g_object_weak_ref (G_OBJECT (tooltip->native), native_weak_notify, tooltip); if (native) gtk_tooltip_window_set_relative_to (GTK_TOOLTIP_WINDOW (tooltip->window), native); else gtk_tooltip_window_set_relative_to (GTK_TOOLTIP_WINDOW (tooltip->window), NULL); } static gboolean gtk_tooltip_run_requery (GtkWidget **widget, GtkTooltip *tooltip, gint *x, gint *y) { gboolean has_tooltip = FALSE; gboolean return_value = FALSE; /* Reset tooltip */ gtk_tooltip_set_markup (tooltip, NULL); gtk_tooltip_set_icon (tooltip, NULL); gtk_tooltip_set_tip_area (tooltip, NULL); /* See if the custom widget is again set from the query-tooltip * callback. */ tooltip->custom_was_reset = FALSE; do { has_tooltip = gtk_widget_get_has_tooltip (*widget); if (has_tooltip) return_value = gtk_widget_query_tooltip (*widget, *x, *y, FALSE, tooltip); if (!return_value) { GtkWidget *parent = gtk_widget_get_parent (*widget); if (parent) gtk_widget_translate_coordinates (*widget, parent, *x, *y, x, y); *widget = parent; } else break; } while (*widget); /* If the custom widget was not reset in the query-tooltip * callback, we clear it here. */ if (!tooltip->custom_was_reset) gtk_tooltip_set_custom (tooltip, NULL); return return_value; } static void gtk_tooltip_position (GtkTooltip *tooltip, GdkDisplay *display, GtkWidget *new_tooltip_widget, GdkDevice *device) { GtkSettings *settings; graphene_rect_t anchor_bounds; GdkRectangle anchor_rect; GdkSurface *effective_toplevel; GtkWidget *toplevel; int rect_anchor_dx = 0; int cursor_size; int anchor_rect_padding; gtk_widget_realize (GTK_WIDGET (tooltip->window)); tooltip->tooltip_widget = new_tooltip_widget; toplevel = GTK_WIDGET (gtk_widget_get_native (new_tooltip_widget)); if (gtk_widget_compute_bounds (new_tooltip_widget, toplevel, &anchor_bounds)) { anchor_rect = (GdkRectangle) { floorf (anchor_bounds.origin.x), floorf (anchor_bounds.origin.y), ceilf (anchor_bounds.size.width), ceilf (anchor_bounds.size.height) }; } else { anchor_rect = (GdkRectangle) { 0, 0, 0, 0 }; } settings = gtk_settings_get_for_display (display); g_object_get (settings, "gtk-cursor-theme-size", &cursor_size, NULL); if (cursor_size == 0) cursor_size = 16; if (device) anchor_rect_padding = MAX (4, cursor_size - 32); else anchor_rect_padding = 4; anchor_rect.x -= anchor_rect_padding; anchor_rect.y -= anchor_rect_padding; anchor_rect.width += anchor_rect_padding * 2; anchor_rect.height += anchor_rect_padding * 2; if (device) { const int max_x_distance = 32; /* Max 48x48 icon + default padding */ const int max_anchor_rect_height = 48 + 8; double px, py; int pointer_x, pointer_y; /* * For pointer position triggered tooltips, implement the following * semantics: * * If the anchor rectangle is too tall (meaning if we'd be constrained * and flip, it'd flip too far away), rely only on the pointer position * to position the tooltip. The approximate pointer cursorrectangle is * used as an anchor rectantgle. * * If the anchor rectangle isn't to tall, make sure the tooltip isn't too * far away from the pointer position. */ effective_toplevel = gtk_native_get_surface (GTK_NATIVE (toplevel)); gdk_surface_get_device_position (effective_toplevel, device, &px, &py, NULL); pointer_x = round (px); pointer_y = round (py); if (anchor_rect.height > max_anchor_rect_height) { anchor_rect.x = pointer_x - 4; anchor_rect.y = pointer_y - 4; anchor_rect.width = cursor_size; anchor_rect.height = cursor_size; } else { int anchor_point_x; int x_distance; anchor_point_x = anchor_rect.x + anchor_rect.width / 2; x_distance = pointer_x - anchor_point_x; if (x_distance > max_x_distance) rect_anchor_dx = x_distance - max_x_distance; else if (x_distance < -max_x_distance) rect_anchor_dx = x_distance + max_x_distance; } } gtk_tooltip_window_position (GTK_TOOLTIP_WINDOW (tooltip->window), &anchor_rect, GDK_GRAVITY_SOUTH, GDK_GRAVITY_NORTH, GDK_ANCHOR_FLIP_Y | GDK_ANCHOR_SLIDE_X, rect_anchor_dx, 0); } static void gtk_tooltip_show_tooltip (GdkDisplay *display) { double px, py; gint x, y; GdkSurface *surface; GtkWidget *tooltip_widget; GdkDevice *device; GtkTooltip *tooltip; gboolean return_value = FALSE; tooltip = g_object_get_qdata (G_OBJECT (display), quark_current_tooltip); if (!tooltip->native) return; surface = gtk_native_get_surface (GTK_NATIVE (tooltip->native)); device = gdk_seat_get_pointer (gdk_display_get_default_seat (display)); gdk_surface_get_device_position (surface, device, &px, &py, NULL); x = round (px); y = round (py); tooltip_widget = _gtk_widget_find_at_coords (surface, x, y, &x, &y); if (!tooltip_widget) return; return_value = gtk_tooltip_run_requery (&tooltip_widget, tooltip, &x, &y); if (!return_value) return; /* FIXME: should use tooltip->window iso tooltip->window */ if (display != gtk_widget_get_display (tooltip->window)) { g_signal_handlers_disconnect_by_func (display, gtk_tooltip_display_closed, tooltip); gtk_window_set_display (GTK_WINDOW (tooltip->window), display); g_signal_connect (display, "closed", G_CALLBACK (gtk_tooltip_display_closed), tooltip); } gtk_tooltip_position (tooltip, display, tooltip_widget, device); gtk_widget_show (GTK_WIDGET (tooltip->window)); /* Now a tooltip is visible again on the display, make sure browse * mode is enabled. */ tooltip->browse_mode_enabled = TRUE; if (tooltip->browse_mode_timeout_id) { g_source_remove (tooltip->browse_mode_timeout_id); tooltip->browse_mode_timeout_id = 0; } } static void gtk_tooltip_hide_tooltip (GtkTooltip *tooltip) { guint timeout = BROWSE_DISABLE_TIMEOUT; if (!tooltip) return; if (tooltip->timeout_id) { g_source_remove (tooltip->timeout_id); tooltip->timeout_id = 0; } if (!GTK_TOOLTIP_VISIBLE (tooltip)) return; tooltip->tooltip_widget = NULL; /* The tooltip is gone, after (by default, should be configurable) 500ms * we want to turn off browse mode */ if (!tooltip->browse_mode_timeout_id) { tooltip->browse_mode_timeout_id = g_timeout_add_full (0, timeout, tooltip_browse_mode_expired, g_object_ref (tooltip), g_object_unref); g_source_set_name_by_id (tooltip->browse_mode_timeout_id, "[gtk] tooltip_browse_mode_expired"); } if (tooltip->window) gtk_widget_hide (tooltip->window); } static gint tooltip_popup_timeout (gpointer data) { GdkDisplay *display; GtkTooltip *tooltip; display = GDK_DISPLAY (data); tooltip = g_object_get_qdata (G_OBJECT (display), quark_current_tooltip); /* This usually does not happen. However, it does occur in language * bindings were reference counting of objects behaves differently. */ if (!tooltip) return FALSE; gtk_tooltip_show_tooltip (display); tooltip->timeout_id = 0; return FALSE; } static void gtk_tooltip_start_delay (GdkDisplay *display) { guint timeout; GtkTooltip *tooltip; tooltip = g_object_get_qdata (G_OBJECT (display), quark_current_tooltip); if (!tooltip || GTK_TOOLTIP_VISIBLE (tooltip)) return; if (tooltip->timeout_id) g_source_remove (tooltip->timeout_id); if (tooltip->browse_mode_enabled) timeout = BROWSE_TIMEOUT; else timeout = HOVER_TIMEOUT; tooltip->timeout_id = g_timeout_add_full (0, timeout, tooltip_popup_timeout, g_object_ref (display), g_object_unref); g_source_set_name_by_id (tooltip->timeout_id, "[gtk] tooltip_popup_timeout"); } void _gtk_tooltip_hide (GtkWidget *widget) { GdkDisplay *display; GtkTooltip *tooltip; display = gtk_widget_get_display (widget); tooltip = g_object_get_qdata (G_OBJECT (display), quark_current_tooltip); if (!tooltip || !tooltip->window || !tooltip->tooltip_widget) return; if (widget == tooltip->tooltip_widget) gtk_tooltip_hide_tooltip (tooltip); } static gboolean tooltips_enabled (GdkEvent *event) { GdkDevice *source_device; GdkInputSource source; GdkModifierType event_state = 0; switch ((guint)gdk_event_get_event_type (event)) { case GDK_ENTER_NOTIFY: case GDK_LEAVE_NOTIFY: case GDK_BUTTON_PRESS: case GDK_KEY_PRESS: case GDK_DRAG_ENTER: case GDK_GRAB_BROKEN: case GDK_MOTION_NOTIFY: case GDK_TOUCH_UPDATE: case GDK_SCROLL: break; /* OK */ default: return FALSE; } event_state = gdk_event_get_modifier_state (event); if ((event_state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK | GDK_BUTTON4_MASK | GDK_BUTTON5_MASK)) != 0) return FALSE; source_device = gdk_event_get_source_device (event); if (!source_device) return FALSE; source = gdk_device_get_source (source_device); if (source != GDK_SOURCE_TOUCHSCREEN) return TRUE; return FALSE; } void _gtk_tooltip_handle_event (GtkWidget *target, GdkEvent *event) { GdkEventType event_type; GdkSurface *surface; gdouble dx, dy; if (!tooltips_enabled (event)) return; event_type = gdk_event_get_event_type (event); surface = gdk_event_get_surface (event); gdk_event_get_position (event, &dx, &dy); gtk_tooltip_handle_event_internal (event_type, surface, target, dx, dy); } /* dx/dy must be in @target_widget's coordinates */ static void gtk_tooltip_handle_event_internal (GdkEventType event_type, GdkSurface *surface, GtkWidget *target_widget, gdouble dx, gdouble dy) { int x = dx, y = dy; GdkDisplay *display; GtkTooltip *tooltip; display = gdk_surface_get_display (surface); tooltip = g_object_get_qdata (G_OBJECT (display), quark_current_tooltip); if (tooltip) gtk_tooltip_set_surface (tooltip, surface); /* Hide the tooltip when there's no new tooltip widget */ if (!target_widget) { if (tooltip) gtk_tooltip_hide_tooltip (tooltip); return; } switch ((guint) event_type) { case GDK_BUTTON_PRESS: case GDK_KEY_PRESS: case GDK_DRAG_ENTER: case GDK_GRAB_BROKEN: case GDK_SCROLL: gtk_tooltip_hide_tooltip (tooltip); break; case GDK_MOTION_NOTIFY: case GDK_ENTER_NOTIFY: case GDK_LEAVE_NOTIFY: if (tooltip) { gboolean tip_area_set; GdkRectangle tip_area; gboolean hide_tooltip; tip_area_set = tooltip->tip_area_set; tip_area = tooltip->tip_area; gtk_tooltip_run_requery (&target_widget, tooltip, &x, &y); /* Leave notify should override the query function */ hide_tooltip = (event_type == GDK_LEAVE_NOTIFY); /* Is the pointer above another widget now? */ if (GTK_TOOLTIP_VISIBLE (tooltip)) hide_tooltip |= target_widget != tooltip->tooltip_widget; /* Did the pointer move out of the previous "context area"? */ if (tip_area_set) hide_tooltip |= !gdk_rectangle_contains_point (&tip_area, x, y); if (hide_tooltip) gtk_tooltip_hide_tooltip (tooltip); else gtk_tooltip_start_delay (display); } else { /* Need a new tooltip for this display */ tooltip = g_object_new (GTK_TYPE_TOOLTIP, NULL); g_object_set_qdata_full (G_OBJECT (display), quark_current_tooltip, tooltip, g_object_unref); g_signal_connect (display, "closed", G_CALLBACK (gtk_tooltip_display_closed), tooltip); gtk_tooltip_set_surface (tooltip, surface); gtk_tooltip_start_delay (display); } break; default: break; } }