--- /dev/null
+/* scrollbar implementation -- X interface.
+ Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
+ Copyright (C) 1994 Amdahl Corporation.
+ Copyright (C) 1995 Sun Microsystems, Inc.
+ Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>.
+
+This file is part of XEmacs.
+
+XEmacs 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, or (at your option) any
+later version.
+
+XEmacs 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 XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: Not in FSF. */
+
+/* This file Mule-ized (more like Mule-verified) by Ben Wing, 7-8-00. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "console-x.h"
+#include "EmacsFrame.h"
+#include "glyphs-x.h"
+#include "gui-x.h"
+#include "scrollbar-x.h"
+
+#include "frame.h"
+#include "window.h"
+
+static void x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id,
+ XtPointer client_data);
+static void x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id,
+ XtPointer client_data);
+
+/* Used to prevent changing the size of the slider while drag
+ scrolling, under Motif. This is necessary because the Motif
+ scrollbar is incredibly stupid about updating the slider and causes
+ lots of flicker if it is done too often. */
+static int inhibit_slider_size_change;
+int stupid_vertical_scrollbar_drag_hack;
+
+/* Doesn't work with athena */
+#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
+static int vertical_drag_in_progress;
+#endif
+
+\f
+/* A device method. */
+static int
+x_inhibit_scrollbar_slider_size_change (void)
+{
+ /* Doesn't work with Athena */
+#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
+ return inhibit_slider_size_change;
+#else
+ return 0;
+#endif
+}
+
+/* A device method. */
+static void
+x_free_scrollbar_instance (struct scrollbar_instance *instance)
+{
+ if (SCROLLBAR_X_NAME (instance))
+ xfree (SCROLLBAR_X_NAME (instance));
+
+ if (SCROLLBAR_X_WIDGET (instance))
+ {
+ if (XtIsManaged (SCROLLBAR_X_WIDGET (instance)))
+ XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
+
+ lw_destroy_all_widgets (SCROLLBAR_X_ID (instance));
+ }
+
+ if (instance->scrollbar_data)
+ xfree (instance->scrollbar_data);
+}
+
+/* A device method. */
+static void
+x_release_scrollbar_instance (struct scrollbar_instance *instance)
+{
+ if (XtIsManaged (SCROLLBAR_X_WIDGET (instance)))
+ XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
+}
+
+/* A device method. */
+static void
+x_create_scrollbar_instance (struct frame *f, int vertical,
+ struct scrollbar_instance *instance)
+{
+ char buffer[32];
+
+ /* initialize the X specific data section. */
+ instance->scrollbar_data = xnew_and_zero (struct x_scrollbar_data);
+
+ SCROLLBAR_X_ID (instance) = new_lwlib_id ();
+ sprintf (buffer, "scrollbar_%d", SCROLLBAR_X_ID (instance));
+ SCROLLBAR_X_NAME (instance) = xstrdup (buffer);
+#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) || \
+ defined (LWLIB_SCROLLBARS_ATHENA3D)
+ SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = -1;
+#endif
+
+ if (vertical)
+ {
+ SCROLLBAR_X_WIDGET (instance) =
+ lw_create_widget ("vertical-scrollbar", SCROLLBAR_X_NAME (instance),
+ SCROLLBAR_X_ID (instance),
+ NULL, FRAME_X_CONTAINER_WIDGET (f), 0,
+ x_update_vertical_scrollbar_callback, NULL, NULL);
+ }
+ else
+ {
+ SCROLLBAR_X_WIDGET (instance) =
+ lw_create_widget ("horizontal-scrollbar", SCROLLBAR_X_NAME (instance),
+ SCROLLBAR_X_ID (instance),
+ NULL, FRAME_X_CONTAINER_WIDGET (f), 0,
+ x_update_horizontal_scrollbar_callback, NULL, NULL);
+ }
+}
+
+#define UPDATE_DATA_FIELD(field) \
+ if (new_##field >= 0 && \
+ SCROLLBAR_X_POS_DATA (inst).field != new_##field) { \
+ SCROLLBAR_X_POS_DATA (inst).field = new_##field; \
+ inst->scrollbar_instance_changed = 1; \
+ }
+
+/* A device method. */
+/* #### The -1 check is such a hack. */
+static void
+x_update_scrollbar_instance_values (struct window *w,
+ struct scrollbar_instance *inst,
+ int new_line_increment,
+ int new_page_increment,
+ int new_minimum, int new_maximum,
+ int new_slider_size,
+ int new_slider_position,
+ int new_scrollbar_width,
+ int new_scrollbar_height,
+ int new_scrollbar_x, int new_scrollbar_y)
+{
+ UPDATE_DATA_FIELD (line_increment);
+ UPDATE_DATA_FIELD (page_increment);
+ UPDATE_DATA_FIELD (minimum);
+ UPDATE_DATA_FIELD (maximum);
+ UPDATE_DATA_FIELD (slider_size);
+ UPDATE_DATA_FIELD (slider_position);
+ UPDATE_DATA_FIELD (scrollbar_width);
+ UPDATE_DATA_FIELD (scrollbar_height);
+ UPDATE_DATA_FIELD (scrollbar_x);
+ UPDATE_DATA_FIELD (scrollbar_y);
+
+ /* This doesn't work with Athena, why? */
+#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
+ if (w && !vertical_drag_in_progress)
+ {
+ int new_vov = SCROLLBAR_X_POS_DATA (inst).slider_position;
+ int new_vows = marker_position (w->start[CURRENT_DISP]);
+
+ if (SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) != new_vov)
+ {
+ SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) = new_vov;
+ inst->scrollbar_instance_changed = 1;
+ }
+ if (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) != new_vows)
+ {
+ SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) = new_vows;
+ inst->scrollbar_instance_changed = 1;
+ }
+ }
+#endif
+}
+
+/* Used by x_update_scrollbar_instance_status. */
+static void
+update_one_scrollbar_bs (struct frame *f, Widget sb_widget)
+{
+ Boolean use_backing_store;
+
+ Xt_GET_VALUE (FRAME_X_TEXT_WIDGET (f), XtNuseBackingStore, &use_backing_store);
+
+ if (use_backing_store && sb_widget)
+ {
+ unsigned long mask = CWBackingStore;
+ XSetWindowAttributes attrs;
+
+ attrs.backing_store = Always;
+ XChangeWindowAttributes (XtDisplay (sb_widget),
+ XtWindow (sb_widget),
+ mask,
+ &attrs);
+ }
+}
+
+/* Create a widget value structure for passing down to lwlib so that
+ it can update the scrollbar widgets. Used by
+ x_update_scrollbar_instance_status. */
+static widget_value *
+scrollbar_instance_to_widget_value (struct scrollbar_instance *instance)
+{
+ widget_value *wv;
+
+ wv = xmalloc_widget_value ();
+ /* #### maybe should add malloc_scrollbar_values to resource these? */
+ wv->scrollbar_data = xnew (scrollbar_values);
+
+ wv->name = SCROLLBAR_X_NAME (instance);
+ wv->name = xstrdup (wv->name);
+ wv->value = 0;
+ wv->key = 0;
+ wv->enabled = instance->scrollbar_is_active;
+ wv->selected = 0;
+ wv->call_data = NULL;
+
+ *wv->scrollbar_data = SCROLLBAR_X_POS_DATA (instance);
+
+ wv->next = NULL;
+
+ return wv;
+}
+
+/* Used by x_update_scrollbar_instance_status. */
+static void
+update_one_widget_scrollbar_pointer (struct window *w, Widget wid)
+{
+ if (POINTER_IMAGE_INSTANCEP (w->scrollbar_pointer))
+ {
+ XDefineCursor (XtDisplay (wid), XtWindow (wid),
+ XIMAGE_INSTANCE_X_CURSOR (w->scrollbar_pointer));
+ XSync (XtDisplay (wid), False);
+ }
+}
+
+/* A device method. */
+static void
+x_update_scrollbar_instance_status (struct window *w, int active, int size,
+ struct scrollbar_instance *instance)
+{
+ struct frame *f = XFRAME (w->frame);
+ Boolean managed = XtIsManaged (SCROLLBAR_X_WIDGET (instance));
+
+ if (active && size)
+ {
+ widget_value *wv = scrollbar_instance_to_widget_value (instance);
+
+ if (instance->scrollbar_instance_changed)
+ {
+ lw_modify_all_widgets (SCROLLBAR_X_ID (instance), wv, 0);
+ instance->scrollbar_instance_changed = 0;
+ }
+
+ if (!managed)
+ {
+ XtManageChild (SCROLLBAR_X_WIDGET (instance));
+ if (XtWindow (SCROLLBAR_X_WIDGET (instance)))
+ {
+ /* Raise this window so that it's visible on top of the
+ text window below it. */
+ XRaiseWindow (XtDisplay (SCROLLBAR_X_WIDGET (instance)),
+ XtWindow (SCROLLBAR_X_WIDGET (instance)));
+ update_one_widget_scrollbar_pointer
+ (w, SCROLLBAR_X_WIDGET (instance));
+ if (!SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance))
+ {
+ update_one_scrollbar_bs (f, SCROLLBAR_X_WIDGET (instance));
+ SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance) = 1;
+ }
+ }
+ }
+
+ if (!wv->scrollbar_data) ABORT ();
+ free_widget_value_tree (wv);
+ }
+ else if (managed)
+ {
+#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
+ /* This isn't needed with Athena Scrollbars. It might not be needed */
+ /* with Motif scrollbars (it is apparently needed with Lesstif). */
+ XtUngrabKeyboard (SCROLLBAR_X_WIDGET (instance), CurrentTime);
+#endif
+ XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
+ }
+}
+
+enum x_scrollbar_loop
+{
+ X_FIND_SCROLLBAR_WINDOW_MIRROR,
+ X_SET_SCROLLBAR_POINTER,
+ X_WINDOW_IS_SCROLLBAR,
+ X_UPDATE_FRAME_SCROLLBARS
+};
+
+static struct window_mirror *
+x_scrollbar_loop (enum x_scrollbar_loop type, Lisp_Object window,
+ struct window_mirror *mir,
+ LWLIB_ID id, Window x_win)
+{
+ struct window_mirror *retval = NULL;
+
+ while (mir)
+ {
+ struct scrollbar_instance *vinstance = mir->scrollbar_vertical_instance;
+ struct scrollbar_instance *hinstance = mir->scrollbar_horizontal_instance;
+ struct window *w = XWINDOW (window);
+
+ if (mir->vchild)
+ retval = x_scrollbar_loop (type, w->vchild, mir->vchild, id, x_win);
+ else if (mir->hchild)
+ retval = x_scrollbar_loop (type, w->hchild, mir->hchild, id, x_win);
+ if (retval)
+ return retval;
+
+ if (hinstance || vinstance)
+ {
+ switch (type)
+ {
+ case X_FIND_SCROLLBAR_WINDOW_MIRROR:
+ if ((vinstance && SCROLLBAR_X_ID (vinstance) == id) ||
+ (hinstance && SCROLLBAR_X_ID (hinstance) == id))
+ return mir;
+ break;
+ case X_UPDATE_FRAME_SCROLLBARS:
+ if (!mir->vchild && !mir->hchild)
+ update_window_scrollbars (w, mir, 1, 0);
+ break;
+ case X_SET_SCROLLBAR_POINTER:
+ if (!mir->vchild && !mir->hchild)
+ {
+ Widget widget;
+
+ widget = SCROLLBAR_X_WIDGET (hinstance);
+ if (widget && XtIsManaged (widget))
+ update_one_widget_scrollbar_pointer (w, widget);
+
+ widget = SCROLLBAR_X_WIDGET (vinstance);
+ if (widget && XtIsManaged (widget))
+ update_one_widget_scrollbar_pointer (w, widget);
+ }
+ break;
+ case X_WINDOW_IS_SCROLLBAR:
+ if (!mir->vchild && !mir->hchild)
+ {
+ Widget widget;
+
+ widget = SCROLLBAR_X_WIDGET (hinstance);
+ if (widget && XtIsManaged (widget) &&
+ XtWindow (widget) == x_win)
+ return (struct window_mirror *) 1;
+
+ widget = SCROLLBAR_X_WIDGET (vinstance);
+ if (widget && XtIsManaged (widget) &&
+ XtWindow (widget) == x_win)
+ return (struct window_mirror *) 1;
+ }
+ break;
+ default:
+ ABORT ();
+ }
+ }
+
+ mir = mir->next;
+ window = w->next;
+ }
+
+ return NULL;
+}
+
+/* Used by callbacks. */
+static struct window_mirror *
+find_scrollbar_window_mirror (struct frame *f, LWLIB_ID id)
+{
+ if (f->mirror_dirty)
+ update_frame_window_mirror (f);
+ return x_scrollbar_loop (X_FIND_SCROLLBAR_WINDOW_MIRROR, f->root_window,
+ f->root_mirror, id, (Window) NULL);
+}
+
+/*
+ * This is the only callback provided for vertical scrollbars. It
+ * should be able to handle all of the scrollbar events in
+ * scroll_action (see lwlib.h). The client data will be of type
+ * scroll_event (see lwlib.h). */
+static void
+x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id,
+ XtPointer client_data)
+{
+ /* This function can GC */
+ scroll_event *data = (scroll_event *) client_data;
+ struct device *d = get_device_from_display (XtDisplay (widget));
+ struct frame *f = x_any_window_to_frame (d, XtWindow (widget));
+ Lisp_Object win, frame;
+ struct scrollbar_instance *instance;
+ struct window_mirror *mirror;
+
+ if (!f)
+ return;
+
+ mirror = find_scrollbar_window_mirror (f, id);
+ if (!mirror)
+ return;
+
+ win = real_window (mirror, 1);
+
+ if (NILP (win))
+ return;
+ instance = mirror->scrollbar_vertical_instance;
+ frame = WINDOW_FRAME (XWINDOW (win));
+
+ /* It seems that this is necessary whenever signal_special_Xt_user_event()
+ is called. #### Why??? */
+ DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d);
+
+ switch (data->action)
+ {
+ case SCROLLBAR_LINE_UP:
+ signal_special_Xt_user_event (frame, Qscrollbar_line_up, win);
+ break;
+
+ case SCROLLBAR_LINE_DOWN:
+ signal_special_Xt_user_event (frame, Qscrollbar_line_down, win);
+ break;
+
+ /* The Athena scrollbar paging behavior is that of xterms.
+ Depending on where you click the size of the page varies.
+ Motif always does a standard Emacs page. */
+ case SCROLLBAR_PAGE_UP:
+#if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \
+ !defined (LWLIB_SCROLLBARS_ATHENA3D)
+ {
+ double tmp = ((double) data->slider_value /
+ (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height);
+ double line = tmp *
+ (double) window_displayed_height (XWINDOW (win));
+
+ if (line > -1.0)
+ line = -1.0;
+ signal_special_Xt_user_event (frame, Qscrollbar_page_up,
+ Fcons (win, make_int ((int) line)));
+ }
+#else
+ signal_special_Xt_user_event (frame, Qscrollbar_page_up,
+ Fcons (win, Qnil));
+#endif
+ break;
+
+ case SCROLLBAR_PAGE_DOWN:
+#if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \
+ !defined (LWLIB_SCROLLBARS_ATHENA3D)
+ {
+ double tmp = ((double) data->slider_value /
+ (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height);
+ double line = tmp *
+ (double) window_displayed_height (XWINDOW (win));
+
+ if (SCROLLBAR_X_POS_DATA(instance).maximum >
+ (SCROLLBAR_X_POS_DATA(instance).slider_size + SCROLLBAR_X_POS_DATA(instance).slider_position))
+ {
+ if (line < 1.0)
+ line = 1.0;
+ signal_special_Xt_user_event (frame, Qscrollbar_page_down,
+ Fcons (win,
+ make_int ((int) line)));
+ }
+ }
+#else
+ signal_special_Xt_user_event (frame, Qscrollbar_page_down,
+ Fcons (win, Qnil));
+#endif
+ break;
+
+ case SCROLLBAR_TOP:
+ signal_special_Xt_user_event (frame, Qscrollbar_to_top, win);
+ break;
+
+ case SCROLLBAR_BOTTOM:
+ signal_special_Xt_user_event (frame, Qscrollbar_to_bottom, win);
+ break;
+
+
+ case SCROLLBAR_CHANGE:
+ inhibit_slider_size_change = 0;
+#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
+ vertical_drag_in_progress = 0;
+ SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value;
+ SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) =
+ XINT (Fwindow_start (win));
+#else
+ stupid_vertical_scrollbar_drag_hack = 0;
+#endif
+ break;
+
+ case SCROLLBAR_DRAG:
+ {
+ int value;
+
+ inhibit_slider_size_change = 1;
+
+#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
+ /* Doing drags with Motif-like scrollbars is a mess, since we
+ want to avoid having the window position jump when you
+ first grab the scrollbar, but we also want to ensure that
+ you can scroll all the way to the top or bottom of the
+ buffer. This can all be replaced with something sane when
+ we get line-based scrolling. */
+
+ vertical_drag_in_progress = 1;
+
+ if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) < 0)
+ {
+ SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value;
+ SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) =
+ XINT (Fwindow_start (win));
+ }
+
+ /* Could replace this piecewise linear scrolling with a
+ quadratic through the three points, but I'm not sure that
+ would feel any nicer in practice. */
+ if (data->slider_value < SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))
+ {
+ /* We've dragged up; slide linearly from original position to
+ window-start=data.minimum, slider-value=data.minimum. */
+
+ if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
+ <= SCROLLBAR_X_POS_DATA (instance).minimum)
+ {
+ /* shouldn't get here, but just in case */
+ value = SCROLLBAR_X_POS_DATA (instance).minimum;
+ }
+ else
+ {
+ value = (int)
+ (SCROLLBAR_X_POS_DATA (instance).minimum
+ + (((double)
+ (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)
+ - SCROLLBAR_X_POS_DATA (instance).minimum)
+ * (data->slider_value -
+ SCROLLBAR_X_POS_DATA (instance).minimum))
+ / (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
+ - SCROLLBAR_X_POS_DATA (instance).minimum)));
+ }
+ }
+ else
+ {
+ /* We've dragged down; slide linearly from original position to
+ window-start=data.maximum, slider-value=data.maximum. */
+
+ if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
+ >= (SCROLLBAR_X_POS_DATA (instance).maximum -
+ SCROLLBAR_X_POS_DATA (instance).slider_size))
+ {
+ /* avoid divide by zero */
+ value = SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance);
+ }
+ else
+ {
+ value = (int)
+ (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)
+ + (((double)
+ (SCROLLBAR_X_POS_DATA (instance).maximum
+ - SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance))
+ * (data->slider_value
+ - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)))
+ / (SCROLLBAR_X_POS_DATA (instance).maximum
+ - SCROLLBAR_X_POS_DATA (instance).slider_size
+ - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))));
+ }
+ }
+#else
+ stupid_vertical_scrollbar_drag_hack = 0;
+ value = data->slider_value;
+#endif
+
+ if (value >= SCROLLBAR_X_POS_DATA (instance).maximum)
+ value = SCROLLBAR_X_POS_DATA (instance).maximum - 1;
+ if (value < SCROLLBAR_X_POS_DATA (instance).minimum)
+ value = SCROLLBAR_X_POS_DATA (instance).minimum;
+
+ signal_special_Xt_user_event (frame, Qscrollbar_vertical_drag,
+ Fcons (win, make_int (value)));
+ }
+ break;
+
+ }
+}
+
+/*
+ * This is the only callback provided for horizontal scrollbars. It
+ * should be able to handle all of the scrollbar events in
+ * scroll_action (see lwlib.h). The client data will be of type
+ * scroll_event (see lwlib.h). */
+static void
+x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id,
+ XtPointer client_data)
+{
+ scroll_event *data = (scroll_event *) client_data;
+ struct device *d = get_device_from_display (XtDisplay (widget));
+ struct frame *f = x_any_window_to_frame (d, XtWindow (widget));
+ Lisp_Object win, frame;
+ struct window_mirror *mirror;
+
+ if (!f)
+ return;
+
+ mirror = find_scrollbar_window_mirror (f, id);
+ if (!mirror)
+ return;
+
+ win = real_window (mirror, 1);
+
+ if (NILP (win))
+ return;
+ frame = WINDOW_FRAME (XWINDOW (win));
+
+ /* It seems that this is necessary whenever signal_special_Xt_user_event()
+ is called. #### Why??? */
+ DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d);
+
+ switch (data->action)
+ {
+ case SCROLLBAR_LINE_UP:
+ signal_special_Xt_user_event (frame, Qscrollbar_char_left, win);
+ break;
+ case SCROLLBAR_LINE_DOWN:
+ signal_special_Xt_user_event (frame, Qscrollbar_char_right, win);
+ break;
+ case SCROLLBAR_PAGE_UP:
+ signal_special_Xt_user_event (frame, Qscrollbar_page_left, win);
+ break;
+ case SCROLLBAR_PAGE_DOWN:
+ signal_special_Xt_user_event (frame, Qscrollbar_page_right, win);
+ break;
+ case SCROLLBAR_TOP:
+ signal_special_Xt_user_event (frame, Qscrollbar_to_left, win);
+ break;
+ case SCROLLBAR_BOTTOM:
+ signal_special_Xt_user_event (frame, Qscrollbar_to_right, win);
+ break;
+ case SCROLLBAR_CHANGE:
+ inhibit_slider_size_change = 0;
+ break;
+ case SCROLLBAR_DRAG:
+ inhibit_slider_size_change = 1;
+ /* #### Fix the damn toolkit code so they all work the same way.
+ Lucid is the one mostly wrong.*/
+#if defined (LWLIB_SCROLLBARS_LUCID) || defined (LWLIB_SCROLLBARS_ATHENA3D)
+ signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag,
+ (Fcons
+ (win, make_int (data->slider_value))));
+#else
+ signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag,
+ (Fcons
+ (win,
+ make_int (data->slider_value - 1))));
+#endif
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+x_scrollbar_pointer_changed_in_window (struct window *w)
+{
+ Lisp_Object window;
+
+ XSETWINDOW (window, w);
+ x_scrollbar_loop (X_SET_SCROLLBAR_POINTER, window, find_window_mirror (w),
+ 0, (Window) NULL);
+}
+
+/* Make sure that all scrollbars on frame are up-to-date. Called
+ directly from x_set_frame_properties in frame-x.c*/
+void
+x_update_frame_scrollbars (struct frame *f)
+{
+ /* Consider this code to be "in_display" so that we ABORT() if Fsignal()
+ gets called. */
+ in_display++;
+ x_scrollbar_loop (X_UPDATE_FRAME_SCROLLBARS, f->root_window, f->root_mirror,
+ 0, (Window) NULL);
+ in_display--;
+ if (in_display < 0) ABORT ();
+}
+
+#ifdef MEMORY_USAGE_STATS
+
+static int
+x_compute_scrollbar_instance_usage (struct device *d,
+ struct scrollbar_instance *inst,
+ struct overhead_stats *ovstats)
+{
+ int total = 0;
+
+ while (inst)
+ {
+ struct x_scrollbar_data *data =
+ (struct x_scrollbar_data *) inst->scrollbar_data;
+
+ total += malloced_storage_size (data, sizeof (*data), ovstats);
+ total += malloced_storage_size (data->name, 1 + strlen (data->name),
+ ovstats);
+ inst = inst->next;
+ }
+
+ return total;
+}
+
+#endif /* MEMORY_USAGE_STATS */
+
+
+/************************************************************************/
+/* initialization */
+/************************************************************************/
+
+void
+console_type_create_scrollbar_x (void)
+{
+ CONSOLE_HAS_METHOD (x, inhibit_scrollbar_slider_size_change);
+ CONSOLE_HAS_METHOD (x, free_scrollbar_instance);
+ CONSOLE_HAS_METHOD (x, release_scrollbar_instance);
+ CONSOLE_HAS_METHOD (x, create_scrollbar_instance);
+ CONSOLE_HAS_METHOD (x, update_scrollbar_instance_values);
+ CONSOLE_HAS_METHOD (x, update_scrollbar_instance_status);
+ CONSOLE_HAS_METHOD (x, scrollbar_pointer_changed_in_window);
+#ifdef MEMORY_USAGE_STATS
+ CONSOLE_HAS_METHOD (x, compute_scrollbar_instance_usage);
+#endif /* MEMORY_USAGE_STATS */
+}
+
+void
+reinit_vars_of_scrollbar_x (void)
+{
+ stupid_vertical_scrollbar_drag_hack = 1;
+}
+
+void
+vars_of_scrollbar_x (void)
+{
+ reinit_vars_of_scrollbar_x ();
+
+#if defined (LWLIB_SCROLLBARS_LUCID)
+ Fprovide (intern ("lucid-scrollbars"));
+#elif defined (LWLIB_SCROLLBARS_MOTIF)
+ Fprovide (intern ("motif-scrollbars"));
+#elif defined (LWLIB_SCROLLBARS_ATHENA)
+ Fprovide (intern ("athena-scrollbars"));
+#endif
+}
projects / chise / xemacs-chise.git- / blobdiff