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-rw-r--r--widgets/shortcut-bar/e-vscrolled-bar.c652
1 files changed, 0 insertions, 652 deletions
diff --git a/widgets/shortcut-bar/e-vscrolled-bar.c b/widgets/shortcut-bar/e-vscrolled-bar.c
deleted file mode 100644
index 5d5f0ab2e2..0000000000
--- a/widgets/shortcut-bar/e-vscrolled-bar.c
+++ /dev/null
@@ -1,652 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-
-/*
- * Author :
- * Damon Chaplin <damon@gtk.org>
- *
- * Copyright 1999, Helix Code, Inc.
- *
- * This program 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.
- *
- * This program 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
- */
-
-/*
- * EVScrolledBar is like GtkScrolledWindow but only scrolls the child widget
- * vertically. It is intended for scrolling narrow vertical bars.
- */
-
-#include <gtk/gtkarrow.h>
-#include <gtk/gtkbutton.h>
-#include <gtk/gtksignal.h>
-
-#include "e-vscrolled-bar.h"
-
-/* These are the offsets of the up & down buttons from the right and top/bottom
- of the widget. */
-#define E_VSCROLLED_BAR_BUTTON_X_OFFSET 2
-#define E_VSCROLLED_BAR_BUTTON_Y_OFFSET 2
-
-/* This is the time between scrolls. */
-#define E_VSCROLLED_BAR_SCROLL_TIMEOUT 20
-
-static void e_vscrolled_bar_class_init (EVScrolledBarClass *class);
-static void e_vscrolled_bar_init (EVScrolledBar *vscrolled_bar);
-static void e_vscrolled_bar_destroy (GtkObject *object);
-static void e_vscrolled_bar_finalize (GtkObject *object);
-static void e_vscrolled_bar_map (GtkWidget *widget);
-static void e_vscrolled_bar_unmap (GtkWidget *widget);
-static void e_vscrolled_bar_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
-static void e_vscrolled_bar_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static void e_vscrolled_bar_draw (GtkWidget *widget,
- GdkRectangle *area);
-static void e_vscrolled_bar_add (GtkContainer *container,
- GtkWidget *child);
-static void e_vscrolled_bar_remove (GtkContainer *container,
- GtkWidget *child);
-static void e_vscrolled_bar_forall (GtkContainer *container,
- gboolean include_internals,
- GtkCallback callback,
- gpointer callback_data);
-static void e_vscrolled_bar_adjustment_changed (GtkAdjustment *adjustment,
- gpointer data);
-static void e_vscrolled_bar_button_pressed (GtkWidget *button,
- EVScrolledBar *vscrolled_bar);
-static void e_vscrolled_bar_button_released (GtkWidget *button,
- EVScrolledBar *vscrolled_bar);
-static void e_vscrolled_bar_button_clicked (GtkWidget *button,
- EVScrolledBar *vscrolled_bar);
-static gboolean e_vscrolled_bar_timeout_handler (gpointer data);
-
-
-static GtkBinClass *parent_class;
-
-
-GtkType
-e_vscrolled_bar_get_type (void)
-{
- static GtkType e_vscrolled_bar_type = 0;
-
- if (!e_vscrolled_bar_type) {
- GtkTypeInfo e_vscrolled_bar_info = {
- "EVScrolledBar",
- sizeof (EVScrolledBar),
- sizeof (EVScrolledBarClass),
- (GtkClassInitFunc) e_vscrolled_bar_class_init,
- (GtkObjectInitFunc) e_vscrolled_bar_init,
- NULL, /* reserved 1 */
- NULL, /* reserved 2 */
- (GtkClassInitFunc) NULL
- };
-
- parent_class = gtk_type_class (GTK_TYPE_BIN);
- e_vscrolled_bar_type = gtk_type_unique (GTK_TYPE_BIN,
- &e_vscrolled_bar_info);
- }
-
- return e_vscrolled_bar_type;
-}
-
-
-static void
-e_vscrolled_bar_class_init (EVScrolledBarClass *class)
-{
- GtkObjectClass *object_class;
- GtkWidgetClass *widget_class;
- GtkContainerClass *container_class;
-
- object_class = (GtkObjectClass *) class;
- widget_class = (GtkWidgetClass *) class;
- container_class = (GtkContainerClass *) class;
-
- /* Method override */
- object_class->destroy = e_vscrolled_bar_destroy;
- object_class->finalize = e_vscrolled_bar_finalize;
-
- widget_class->map = e_vscrolled_bar_map;
- widget_class->unmap = e_vscrolled_bar_unmap;
- widget_class->size_request = e_vscrolled_bar_size_request;
- widget_class->size_allocate = e_vscrolled_bar_size_allocate;
- widget_class->draw = e_vscrolled_bar_draw;
-
- container_class->add = e_vscrolled_bar_add;
- container_class->remove = e_vscrolled_bar_remove;
- container_class->forall = e_vscrolled_bar_forall;
-}
-
-
-static void
-e_vscrolled_bar_init (EVScrolledBar *vscrolled_bar)
-{
- GtkWidget *arrow;
-
- GTK_WIDGET_SET_FLAGS (vscrolled_bar, GTK_NO_WINDOW);
-
- gtk_container_set_resize_mode (GTK_CONTAINER (vscrolled_bar),
- GTK_RESIZE_QUEUE);
-
- gtk_widget_push_composite_child ();
-
- vscrolled_bar->up_button = gtk_button_new ();
- gtk_widget_set_composite_name (vscrolled_bar->up_button,
- "up_button");
- gtk_widget_set_parent (vscrolled_bar->up_button,
- GTK_WIDGET (vscrolled_bar));
- arrow = gtk_arrow_new (GTK_ARROW_UP, GTK_SHADOW_OUT);
- gtk_misc_set_padding (GTK_MISC (arrow), 1, 1);
- gtk_widget_show (arrow);
- gtk_container_add (GTK_CONTAINER (vscrolled_bar->up_button), arrow);
- gtk_signal_connect_after (GTK_OBJECT (vscrolled_bar->up_button), "pressed", GTK_SIGNAL_FUNC (e_vscrolled_bar_button_pressed), vscrolled_bar);
- gtk_signal_connect_after (GTK_OBJECT (vscrolled_bar->up_button), "released", GTK_SIGNAL_FUNC (e_vscrolled_bar_button_released), vscrolled_bar);
- gtk_signal_connect (GTK_OBJECT (vscrolled_bar->up_button), "clicked", GTK_SIGNAL_FUNC (e_vscrolled_bar_button_clicked), vscrolled_bar);
-
- vscrolled_bar->down_button = gtk_button_new ();
- gtk_widget_set_composite_name (vscrolled_bar->up_button,
- "down_button");
- gtk_widget_set_parent (vscrolled_bar->down_button,
- GTK_WIDGET (vscrolled_bar));
- arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
- gtk_misc_set_padding (GTK_MISC (arrow), 1, 1);
- gtk_widget_show (arrow);
- gtk_container_add (GTK_CONTAINER (vscrolled_bar->down_button), arrow);
- gtk_signal_connect_after (GTK_OBJECT (vscrolled_bar->down_button), "pressed", GTK_SIGNAL_FUNC (e_vscrolled_bar_button_pressed), vscrolled_bar);
- gtk_signal_connect_after (GTK_OBJECT (vscrolled_bar->down_button), "released", GTK_SIGNAL_FUNC (e_vscrolled_bar_button_released), vscrolled_bar);
- gtk_signal_connect (GTK_OBJECT (vscrolled_bar->down_button), "clicked", GTK_SIGNAL_FUNC (e_vscrolled_bar_button_clicked), vscrolled_bar);
-
- gtk_widget_pop_composite_child ();
-
- vscrolled_bar->adjustment = NULL;
- vscrolled_bar->timeout_id = 0;
- vscrolled_bar->scrolling_up = FALSE;
- vscrolled_bar->min_distance = -1.0;
- vscrolled_bar->button_pressed = FALSE;
-}
-
-
-/**
- * e_vscrolled_bar_new:
- *
- * @adjustment: The #GtkAdjustment to use for scrolling, or NULL.
- * @Return: A new #EVScrolledBar.
- *
- * Creates a new #EVScrolledBar with the given adjustment.
- **/
-GtkWidget *
-e_vscrolled_bar_new (GtkAdjustment *adjustment)
-{
- GtkWidget *vscrolled_bar;
-
- vscrolled_bar = GTK_WIDGET (gtk_type_new (e_vscrolled_bar_get_type ()));
- e_vscrolled_bar_set_adjustment (E_VSCROLLED_BAR (vscrolled_bar),
- adjustment);
-
- return vscrolled_bar;
-}
-
-
-static void
-e_vscrolled_bar_destroy (GtkObject *object)
-{
- EVScrolledBar *vscrolled_bar;
-
- vscrolled_bar = E_VSCROLLED_BAR (object);
-
- if (vscrolled_bar->timeout_id) {
- g_source_remove (vscrolled_bar->timeout_id);
- vscrolled_bar->timeout_id = 0;
- }
-
- gtk_widget_unparent (vscrolled_bar->up_button);
- gtk_widget_unparent (vscrolled_bar->down_button);
-
- GTK_OBJECT_CLASS (parent_class)->destroy (object);
-}
-
-
-static void
-e_vscrolled_bar_finalize (GtkObject *object)
-{
- EVScrolledBar *vscrolled_bar;
-
- vscrolled_bar = E_VSCROLLED_BAR (object);
-
- gtk_object_unref (GTK_OBJECT (vscrolled_bar->adjustment));
-
- GTK_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-
-static void
-e_vscrolled_bar_map (GtkWidget *widget)
-{
- EVScrolledBar *vscrolled_bar;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (widget));
-
- vscrolled_bar = E_VSCROLLED_BAR (widget);
-
- /* chain parent class handler to map self and child */
- GTK_WIDGET_CLASS (parent_class)->map (widget);
-
- if (GTK_WIDGET_VISIBLE (vscrolled_bar->up_button) &&
- !GTK_WIDGET_MAPPED (vscrolled_bar->up_button))
- gtk_widget_map (vscrolled_bar->up_button);
-
- if (GTK_WIDGET_VISIBLE (vscrolled_bar->down_button) &&
- !GTK_WIDGET_MAPPED (vscrolled_bar->down_button))
- gtk_widget_map (vscrolled_bar->down_button);
-}
-
-
-static void
-e_vscrolled_bar_unmap (GtkWidget *widget)
-{
- EVScrolledBar *vscrolled_bar;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (widget));
-
- vscrolled_bar = E_VSCROLLED_BAR (widget);
-
- /* chain parent class handler to unmap self and child */
- GTK_WIDGET_CLASS (parent_class)->unmap (widget);
-
- if (GTK_WIDGET_MAPPED (vscrolled_bar->up_button))
- gtk_widget_unmap (vscrolled_bar->up_button);
-
- if (GTK_WIDGET_MAPPED (vscrolled_bar->down_button))
- gtk_widget_unmap (vscrolled_bar->down_button);
-}
-
-
-static void
-e_vscrolled_bar_size_request (GtkWidget *widget,
- GtkRequisition *requisition)
-{
- EVScrolledBar *vscrolled_bar;
- GtkBin *bin;
- GtkRequisition child_requisition;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (widget));
- g_return_if_fail (requisition != NULL);
-
- vscrolled_bar = E_VSCROLLED_BAR (widget);
- bin = GTK_BIN (widget);
-
- requisition->width = 0;
- requisition->height = 0;
-
- /* We just return the requisition of the child widget, plus the
- border width. */
- if (bin->child && GTK_WIDGET_VISIBLE (bin->child)) {
- gtk_widget_size_request (bin->child, &child_requisition);
- *requisition = child_requisition;
- }
-
- /* We remember the requested heights of the up & down buttons. */
- gtk_widget_size_request (vscrolled_bar->up_button,
- &child_requisition);
- vscrolled_bar->up_button_width = child_requisition.width;
- vscrolled_bar->up_button_height = child_requisition.height;
-
- gtk_widget_size_request (vscrolled_bar->down_button,
- &child_requisition);
- vscrolled_bar->down_button_width = child_requisition.width;
- vscrolled_bar->down_button_height = child_requisition.height;
-
- /* Add on the standard container border widths. */
- requisition->width += GTK_CONTAINER (widget)->border_width * 2;
- requisition->height += GTK_CONTAINER (widget)->border_width * 2;
-}
-
-
-static void
-e_vscrolled_bar_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
-{
- EVScrolledBar *vscrolled_bar;
- GtkBin *bin;
- GtkAllocation button_allocation, child_allocation;
- gint border_width;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (widget));
- g_return_if_fail (allocation != NULL);
-
- vscrolled_bar = E_VSCROLLED_BAR (widget);
- bin = GTK_BIN (widget);
-
- widget->allocation = *allocation;
-
- border_width = GTK_CONTAINER (widget)->border_width;
-
- child_allocation.x = border_width;
- child_allocation.y = border_width;
- child_allocation.width = allocation->width - 2 * border_width;
- child_allocation.height = allocation->height - 2 * border_width;
- gtk_widget_size_allocate (bin->child, &child_allocation);
-
- button_allocation.x = allocation->width - border_width
- - vscrolled_bar->up_button_width
- - E_VSCROLLED_BAR_BUTTON_X_OFFSET;
- button_allocation.y = border_width + E_VSCROLLED_BAR_BUTTON_Y_OFFSET;
- button_allocation.width = vscrolled_bar->up_button_width;
- button_allocation.height = vscrolled_bar->up_button_height;
- gtk_widget_size_allocate (vscrolled_bar->up_button,
- &button_allocation);
-
- button_allocation.x = allocation->width - border_width
- - vscrolled_bar->down_button_width
- - E_VSCROLLED_BAR_BUTTON_X_OFFSET;
- button_allocation.y = allocation->height - border_width
- - vscrolled_bar->down_button_height
- - E_VSCROLLED_BAR_BUTTON_Y_OFFSET;
- button_allocation.width = vscrolled_bar->down_button_width;
- button_allocation.height = vscrolled_bar->down_button_height;
- gtk_widget_size_allocate (vscrolled_bar->down_button,
- &button_allocation);
-}
-
-
-static void
-e_vscrolled_bar_draw (GtkWidget *widget,
- GdkRectangle *area)
-{
- EVScrolledBar *vscrolled_bar;
- GtkBin *bin;
- GdkRectangle child_area;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (widget));
- g_return_if_fail (area != NULL);
-
- vscrolled_bar = E_VSCROLLED_BAR (widget);
- bin = GTK_BIN (widget);
-
- if (bin->child && GTK_WIDGET_VISIBLE (bin->child) &&
- gtk_widget_intersect (bin->child, area, &child_area))
- gtk_widget_draw (bin->child, &child_area);
-
- if (GTK_WIDGET_VISIBLE (vscrolled_bar->up_button) &&
- gtk_widget_intersect (vscrolled_bar->up_button, area, &child_area))
- gtk_widget_draw (vscrolled_bar->up_button, &child_area);
-
- if (GTK_WIDGET_VISIBLE (vscrolled_bar->down_button) &&
- gtk_widget_intersect (vscrolled_bar->down_button, area, &child_area))
- gtk_widget_draw (vscrolled_bar->down_button, &child_area);
-}
-
-
-static void
-e_vscrolled_bar_add (GtkContainer *container,
- GtkWidget *child)
-{
- EVScrolledBar *vscrolled_bar;
- GtkBin *bin;
-
- g_return_if_fail (container != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (container));
-
- vscrolled_bar = E_VSCROLLED_BAR (container);
- bin = GTK_BIN (container);
-
- g_return_if_fail (bin->child == NULL);
-
- bin->child = child;
- gtk_widget_set_parent (child, GTK_WIDGET (bin));
-
- gtk_widget_set_scroll_adjustments (child, NULL,
- vscrolled_bar->adjustment);
-
- if (GTK_WIDGET_REALIZED (child->parent))
- gtk_widget_realize (child);
-
- if (GTK_WIDGET_VISIBLE (child->parent) && GTK_WIDGET_VISIBLE (child)) {
- if (GTK_WIDGET_MAPPED (child->parent))
- gtk_widget_map (child);
-
- gtk_widget_queue_resize (child);
- }
-}
-
-
-static void
-e_vscrolled_bar_remove (GtkContainer *container,
- GtkWidget *child)
-{
- g_return_if_fail (container != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (container));
- g_return_if_fail (child != NULL);
- g_return_if_fail (GTK_BIN (container)->child == child);
-
- gtk_widget_set_scroll_adjustments (child, NULL, NULL);
-
- /* chain parent class handler to remove child */
- GTK_CONTAINER_CLASS (parent_class)->remove (container, child);
-}
-
-
-static void
-e_vscrolled_bar_forall (GtkContainer *container,
- gboolean include_internals,
- GtkCallback callback,
- gpointer callback_data)
-{
- g_return_if_fail (container != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (container));
- g_return_if_fail (callback != NULL);
-
- GTK_CONTAINER_CLASS (parent_class)->forall (container,
- include_internals,
- callback,
- callback_data);
- if (include_internals) {
- EVScrolledBar *vscrolled_bar;
-
- vscrolled_bar = E_VSCROLLED_BAR (container);
-
- if (vscrolled_bar->up_button)
- callback (vscrolled_bar->up_button, callback_data);
- if (vscrolled_bar->down_button)
- callback (vscrolled_bar->down_button, callback_data);
- }
-}
-
-
-/**
- * e_vscrolled_bar_get_adjustment:
- *
- * @vscrolled_bar: An #EVScrolledBar.
- * @Return: The #GtkAdjustment used for scrolling @vscrolled_bar.
- *
- * Returns the #GtkAdjustment used for scrolling the #EVscrolledBar.
- **/
-GtkAdjustment*
-e_vscrolled_bar_get_adjustment (EVScrolledBar *vscrolled_bar)
-{
- g_return_val_if_fail (vscrolled_bar != NULL, NULL);
- g_return_val_if_fail (E_IS_VSCROLLED_BAR (vscrolled_bar), NULL);
-
- return vscrolled_bar->adjustment;
-}
-
-
-/**
- * e_vscrolled_bar_set_adjustment:
- *
- * @vscrolled_bar: An #EVScrolledBar.
- * @adjustment: The #GtkAdjustment to use for scrolling @vscrolled_bar.
- *
- * Sets the #GtkAdjustment to use for scrolling the #EVscrolledBar.
- **/
-void
-e_vscrolled_bar_set_adjustment (EVScrolledBar *vscrolled_bar,
- GtkAdjustment *adjustment)
-{
- g_return_if_fail (vscrolled_bar != NULL);
- g_return_if_fail (E_IS_VSCROLLED_BAR (vscrolled_bar));
-
- if (adjustment)
- g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
- else
- adjustment = (GtkAdjustment*) gtk_object_new (GTK_TYPE_ADJUSTMENT, NULL);
-
- if (vscrolled_bar->adjustment == adjustment)
- return;
-
- if (vscrolled_bar->adjustment) {
- gtk_signal_disconnect_by_func (GTK_OBJECT (vscrolled_bar->adjustment),
- GTK_SIGNAL_FUNC (e_vscrolled_bar_adjustment_changed),
- vscrolled_bar);
- gtk_object_unref (GTK_OBJECT (vscrolled_bar->adjustment));
- }
-
- vscrolled_bar->adjustment = adjustment;
- gtk_object_ref (GTK_OBJECT (vscrolled_bar->adjustment));
- gtk_object_sink (GTK_OBJECT (vscrolled_bar->adjustment));
-
- /* I've used connect_after here to avoid a problem when using a
- GnomeCanvas as the child widget. When just using connect it would
- leave a blank space when one of the buttons is hidden. We want
- the GtkLayout to handle the scrolling before we hide any buttons. */
- gtk_signal_connect_after (GTK_OBJECT (adjustment), "changed",
- GTK_SIGNAL_FUNC (e_vscrolled_bar_adjustment_changed),
- vscrolled_bar);
- gtk_signal_connect_after (GTK_OBJECT (adjustment), "value_changed",
- GTK_SIGNAL_FUNC (e_vscrolled_bar_adjustment_changed),
- vscrolled_bar);
-
- e_vscrolled_bar_adjustment_changed (adjustment, vscrolled_bar);
-
- if (GTK_BIN (vscrolled_bar)->child)
- gtk_widget_set_scroll_adjustments (GTK_BIN (vscrolled_bar)->child, NULL, adjustment);
-}
-
-
-static void
-e_vscrolled_bar_adjustment_changed (GtkAdjustment *adjustment,
- gpointer data)
-{
- EVScrolledBar *vscrolled_bar;
-
- g_return_if_fail (adjustment != NULL);
- g_return_if_fail (data != NULL);
-
- vscrolled_bar = E_VSCROLLED_BAR (data);
-
- /* If the adjustment value is not 0, show the up button. */
- if (adjustment->value != 0)
- gtk_widget_show (vscrolled_bar->up_button);
- else
- gtk_widget_hide (vscrolled_bar->up_button);
-
- /* If the adjustment value is less than the maximum value, show the
- down button. */
- if (adjustment->value < adjustment->upper - adjustment->page_size)
- gtk_widget_show (vscrolled_bar->down_button);
- else
- gtk_widget_hide (vscrolled_bar->down_button);
-}
-
-
-static void
-e_vscrolled_bar_button_pressed (GtkWidget *button,
- EVScrolledBar *vscrolled_bar)
-{
- if (vscrolled_bar->timeout_id != 0)
- g_source_remove (vscrolled_bar->timeout_id);
-
- vscrolled_bar->timeout_id = g_timeout_add (E_VSCROLLED_BAR_SCROLL_TIMEOUT, e_vscrolled_bar_timeout_handler, vscrolled_bar);
- vscrolled_bar->scrolling_up = (button == vscrolled_bar->up_button) ? TRUE : FALSE;
- vscrolled_bar->min_distance = vscrolled_bar->adjustment->page_size / 4;
- vscrolled_bar->button_pressed = TRUE;
-
- e_vscrolled_bar_timeout_handler (vscrolled_bar);
-}
-
-
-static void
-e_vscrolled_bar_button_released (GtkWidget *button,
- EVScrolledBar *vscrolled_bar)
-{
- vscrolled_bar->button_pressed = FALSE;
-}
-
-
-/* This will be called when the user hits the space key to activate the button.
- It will also be called just before button_released() is called, but since
- we already handle that we simply return if the button is pressed. */
-static void
-e_vscrolled_bar_button_clicked (GtkWidget *button,
- EVScrolledBar *vscrolled_bar)
-{
- if (vscrolled_bar->button_pressed)
- return;
-
- /* We act as if the button is pressed and released immediately. */
- e_vscrolled_bar_button_pressed (button, vscrolled_bar);
- vscrolled_bar->button_pressed = FALSE;
-}
-
-
-static gboolean
-e_vscrolled_bar_timeout_handler (gpointer data)
-{
- EVScrolledBar *vscrolled_bar;
- GtkAdjustment *adjustment;
- gfloat new_value;
- gboolean retval = TRUE;
-
- vscrolled_bar = E_VSCROLLED_BAR (data);
- adjustment = vscrolled_bar->adjustment;
-
- GDK_THREADS_ENTER ();
-
- /* Check if the user has released the button and we have already
- scrolled the minimum distance. */
- if (vscrolled_bar->button_pressed == FALSE
- && vscrolled_bar->min_distance <= 0) {
- GDK_THREADS_LEAVE ();
- return FALSE;
- }
-
- vscrolled_bar->min_distance -= adjustment->step_increment;
-
- if (vscrolled_bar->scrolling_up) {
- new_value = adjustment->value - adjustment->step_increment;
- if (new_value <= adjustment->lower) {
- new_value = adjustment->lower;
- retval = FALSE;
- }
- } else {
- new_value = adjustment->value + adjustment->step_increment;
- if (new_value >= adjustment->upper - adjustment->page_size) {
- new_value = adjustment->upper - adjustment->page_size;
- retval = FALSE;
- }
- }
-
- if (adjustment->value != new_value) {
- adjustment->value = new_value;
- gtk_signal_emit_by_name (GTK_OBJECT (adjustment),
- "value_changed");
- }
-
- GDK_THREADS_LEAVE ();
- return retval;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 08:30:46 +0800