diff options
Diffstat (limited to 'shell/ev-tooltip.c')
| -rw-r--r-- | shell/ev-tooltip.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/shell/ev-tooltip.c b/shell/ev-tooltip.c new file mode 100644 index 0000000..f66f22f --- /dev/null +++ b/shell/ev-tooltip.c @@ -0,0 +1,205 @@ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2004 Red Hat, Inc. + * + * Author: + * Marco Pesenti Gritti <marco@gnome.org> + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "ev-tooltip.h" + +#include <gtk/gtklabel.h> + +#define DEFAULT_DELAY 500 +#define STICKY_DELAY 500 +#define STICKY_REVERT_DELAY 1000 +#define SPACE_FROM_CURSOR 10 + +struct _EvTooltipPrivate { + GtkWidget *label; + GTimeVal last_deactivate; + int timer_tag; + gboolean active; +}; + +G_DEFINE_TYPE (EvTooltip, ev_tooltip, GTK_TYPE_WINDOW) + +#define EV_TOOLTIP_GET_PRIVATE(object) \ + (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_TOOLTIP, EvTooltipPrivate)) + +static gboolean +ev_tooltip_expose_event (GtkWidget *widget, + GdkEventExpose *event) +{ + gtk_paint_flat_box (widget->style, widget->window, + GTK_STATE_NORMAL, GTK_SHADOW_OUT, + NULL, widget, "tooltip", 0, 0, + widget->allocation.width, widget->allocation.height); + + return GTK_WIDGET_CLASS (ev_tooltip_parent_class)->expose_event (widget, event); +} + +static void +ev_tooltip_dispose (GObject *object) +{ + EvTooltip *tooltip = EV_TOOLTIP (object); + + if (tooltip->priv->timer_tag) { + g_source_remove (tooltip->priv->timer_tag); + tooltip->priv->timer_tag = 0; + } +} + +static void +ev_tooltip_class_init (EvTooltipClass *class) +{ + GObjectClass *g_object_class = G_OBJECT_CLASS (class); + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); + + g_object_class->dispose = ev_tooltip_dispose; + widget_class->expose_event = ev_tooltip_expose_event; + + g_type_class_add_private (g_object_class, sizeof (EvTooltipPrivate)); +} + +static void +ev_tooltip_init (EvTooltip *tooltip) +{ + GtkWidget *window = GTK_WIDGET (tooltip); + GtkWidget *label; + + tooltip->priv = EV_TOOLTIP_GET_PRIVATE (tooltip); + + gtk_widget_set_app_paintable (GTK_WIDGET (tooltip), TRUE); + gtk_window_set_resizable (GTK_WINDOW (tooltip), FALSE); + gtk_widget_set_name (window, "gtk-tooltips"); + + label = gtk_label_new (NULL); + gtk_label_set_line_wrap (GTK_LABEL (label), TRUE); + gtk_container_add (GTK_CONTAINER (window), label); + gtk_container_set_border_width (GTK_CONTAINER (window), 3); + tooltip->priv->label = label; + + gtk_widget_show (label); +} + +/* Public functions */ + +GtkWidget * +ev_tooltip_new (GtkWidget *parent) +{ + GtkWidget *tooltip; + GtkWidget *toplevel; + + tooltip = g_object_new (EV_TYPE_TOOLTIP, NULL); + + GTK_WINDOW (tooltip)->type = GTK_WINDOW_POPUP; + EV_TOOLTIP (tooltip)->parent = parent; + + toplevel = gtk_widget_get_toplevel (parent); + gtk_window_set_transient_for (GTK_WINDOW (tooltip), GTK_WINDOW (toplevel)); + + return tooltip; +} + +void +ev_tooltip_set_text (EvTooltip *tooltip, const char *text) +{ + gtk_label_set_text (GTK_LABEL (tooltip->priv->label), text); +} + +void +ev_tooltip_set_position (EvTooltip *tooltip, int x, int y) +{ + int root_x, root_y; + + if (tooltip->parent != NULL) { + gdk_window_get_origin (tooltip->parent->window, &root_x, &root_y); + } + + gtk_window_move (GTK_WINDOW (tooltip), + x + root_x + SPACE_FROM_CURSOR, + y + root_y + SPACE_FROM_CURSOR); +} + +static gboolean +ev_tooltip_recently_shown (EvTooltip *tooltip) +{ + GTimeVal now; + glong msec; + + g_get_current_time (&now); + + msec = (now.tv_sec - tooltip->priv->last_deactivate.tv_sec) * 1000 + + (now.tv_usec - tooltip->priv->last_deactivate.tv_usec) / 1000; + + return (msec < STICKY_REVERT_DELAY); +} + +static gint +ev_tooltip_timeout (gpointer data) +{ + GtkWidget *tooltip = GTK_WIDGET (data); + + gtk_widget_show (tooltip); + + return FALSE; +} + +void +ev_tooltip_activate (EvTooltip *tooltip) +{ + int delay; + + if (tooltip->priv->active) { + return; + } else { + tooltip->priv->active = TRUE; + } + + if (ev_tooltip_recently_shown (tooltip)) { + delay = STICKY_DELAY; + } else { + delay = DEFAULT_DELAY; + } + + tooltip->priv->timer_tag = g_timeout_add (delay, ev_tooltip_timeout, + (gpointer)tooltip); +} + +void +ev_tooltip_deactivate (EvTooltip *tooltip) +{ + if (!tooltip->priv->active) { + return; + } else { + tooltip->priv->active = FALSE; + } + + if (tooltip->priv->timer_tag) { + g_source_remove (tooltip->priv->timer_tag); + tooltip->priv->timer_tag = 0; + } + + gtk_widget_hide (GTK_WIDGET (tooltip)); + + g_get_current_time (&tooltip->priv->last_deactivate); +} |