f6393199be
Kinetic scrolling is only done on touch devices, since it is sort of meaningless on pointer devices, besides it implies a different input event handling on child widgets that is unnecessary there. If the scrolling doesn't start after a long press, the scrolling is cancelled and events are handled by child widgets normally. When clicked again close to the previous button press location (assuming it had ~0 movement), the scrolled window will allow the child to handle the events immediately. This is so the user doesn't have to wait to the press-and-hold timeout in order to operate on the scrolledwindow child. The innermost scrolled window always gets to capture the events, all scrolled windows above it just let the event go through. Ideally reaching a limit on the innermost scrolled window would propagate the dragging up the hierarchy in order to keep following the touch coords, although that'd involve rather evil hacks just to cater for broken UIs.
137 lines
6.1 KiB
C
137 lines
6.1 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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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 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#ifndef __GTK_SCROLLED_WINDOW_H__
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#define __GTK_SCROLLED_WINDOW_H__
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#include <gtk/gtkbin.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_SCROLLED_WINDOW (gtk_scrolled_window_get_type ())
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#define GTK_SCROLLED_WINDOW(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCROLLED_WINDOW, GtkScrolledWindow))
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#define GTK_SCROLLED_WINDOW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_SCROLLED_WINDOW, GtkScrolledWindowClass))
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#define GTK_IS_SCROLLED_WINDOW(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCROLLED_WINDOW))
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#define GTK_IS_SCROLLED_WINDOW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_SCROLLED_WINDOW))
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#define GTK_SCROLLED_WINDOW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_SCROLLED_WINDOW, GtkScrolledWindowClass))
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typedef struct _GtkScrolledWindow GtkScrolledWindow;
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typedef struct _GtkScrolledWindowPrivate GtkScrolledWindowPrivate;
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typedef struct _GtkScrolledWindowClass GtkScrolledWindowClass;
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struct _GtkScrolledWindow
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{
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GtkBin container;
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GtkScrolledWindowPrivate *priv;
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};
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struct _GtkScrolledWindowClass
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{
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GtkBinClass parent_class;
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gint scrollbar_spacing;
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/* Action signals for keybindings. Do not connect to these signals
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*/
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/* Unfortunately, GtkScrollType is deficient in that there is
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* no horizontal/vertical variants for GTK_SCROLL_START/END,
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* so we have to add an additional boolean flag.
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*/
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gboolean (*scroll_child) (GtkScrolledWindow *scrolled_window,
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GtkScrollType scroll,
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gboolean horizontal);
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void (* move_focus_out) (GtkScrolledWindow *scrolled_window,
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GtkDirectionType direction);
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/* Padding for future expansion */
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void (*_gtk_reserved1) (void);
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void (*_gtk_reserved2) (void);
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void (*_gtk_reserved3) (void);
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void (*_gtk_reserved4) (void);
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};
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GType gtk_scrolled_window_get_type (void) G_GNUC_CONST;
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GtkWidget* gtk_scrolled_window_new (GtkAdjustment *hadjustment,
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GtkAdjustment *vadjustment);
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void gtk_scrolled_window_set_hadjustment (GtkScrolledWindow *scrolled_window,
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GtkAdjustment *hadjustment);
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void gtk_scrolled_window_set_vadjustment (GtkScrolledWindow *scrolled_window,
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GtkAdjustment *vadjustment);
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GtkAdjustment* gtk_scrolled_window_get_hadjustment (GtkScrolledWindow *scrolled_window);
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GtkAdjustment* gtk_scrolled_window_get_vadjustment (GtkScrolledWindow *scrolled_window);
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GtkWidget* gtk_scrolled_window_get_hscrollbar (GtkScrolledWindow *scrolled_window);
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GtkWidget* gtk_scrolled_window_get_vscrollbar (GtkScrolledWindow *scrolled_window);
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void gtk_scrolled_window_set_policy (GtkScrolledWindow *scrolled_window,
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GtkPolicyType hscrollbar_policy,
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GtkPolicyType vscrollbar_policy);
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void gtk_scrolled_window_get_policy (GtkScrolledWindow *scrolled_window,
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GtkPolicyType *hscrollbar_policy,
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GtkPolicyType *vscrollbar_policy);
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void gtk_scrolled_window_set_placement (GtkScrolledWindow *scrolled_window,
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GtkCornerType window_placement);
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void gtk_scrolled_window_unset_placement (GtkScrolledWindow *scrolled_window);
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GtkCornerType gtk_scrolled_window_get_placement (GtkScrolledWindow *scrolled_window);
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void gtk_scrolled_window_set_shadow_type (GtkScrolledWindow *scrolled_window,
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GtkShadowType type);
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GtkShadowType gtk_scrolled_window_get_shadow_type (GtkScrolledWindow *scrolled_window);
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void gtk_scrolled_window_add_with_viewport (GtkScrolledWindow *scrolled_window,
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GtkWidget *child);
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gint gtk_scrolled_window_get_min_content_width (GtkScrolledWindow *scrolled_window);
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void gtk_scrolled_window_set_min_content_width (GtkScrolledWindow *scrolled_window,
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gint width);
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gint gtk_scrolled_window_get_min_content_height (GtkScrolledWindow *scrolled_window);
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void gtk_scrolled_window_set_min_content_height (GtkScrolledWindow *scrolled_window,
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gint height);
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GDK_AVAILABLE_IN_3_4
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void gtk_scrolled_window_set_kinetic_scrolling (GtkScrolledWindow *scrolled_window,
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gboolean kinetic_scrolling);
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GDK_AVAILABLE_IN_3_4
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gboolean gtk_scrolled_window_get_kinetic_scrolling (GtkScrolledWindow *scrolled_window);
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GDK_AVAILABLE_IN_3_4
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void gtk_scrolled_window_set_capture_button_press (GtkScrolledWindow *scrolled_window,
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gboolean capture_button_press);
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GDK_AVAILABLE_IN_3_4
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gboolean gtk_scrolled_window_get_capture_button_press (GtkScrolledWindow *scrolled_window);
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gint _gtk_scrolled_window_get_scrollbar_spacing (GtkScrolledWindow *scrolled_window);
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G_END_DECLS
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#endif /* __GTK_SCROLLED_WINDOW_H__ */
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