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gtk2/gtk/gtkspinbutton.c
Owen Taylor 9205edae41 gtk/gtkentry.[ch] gtktext.c gtkeditable.[ch] 
Sat Feb 28 23:58:54 1998  Owen Taylor  <owt1@cornell.edu>

	* gtk/gtkentry.[ch] gtktext.c gtkeditable.[ch]

	Created a new base widget type Editable for the entry and
	text widgets, which encapsulates most of the selection and
	clipboard handling stuff, plus some common signals.

	Changed the Entry widget extensively to support this,
	but the interface and appearance should be the same.

	Changed the Text widget moderately to support this.

	It now supports:

	- Selection style cut and paste
	- Clipboard style cut and paste
	- Emacs style key bindings (~same as Entry)
	- Word motion
	- "changed" signal

	There are definitely still some bugs in the new stuff.

	* gtkfilesel.c gtkspinbutton.c testgtk.c: small changes
	to fit the new interface more exactly.
1998-03-01 05:11:05 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "gdk/gdkkeysyms.h"
#include "gtkspinbutton.h"
#include "gtkmain.h"
#include "gtksignal.h"
#define MIN_SPIN_BUTTON_WIDTH 30
#define ARROW_SIZE 11
#define SPIN_BUTTON_INITIAL_TIMER_DELAY 200
#define SPIN_BUTTON_TIMER_DELAY 20
#define MAX_TEXT_LENGTH 256
#define MAX_TIMER_CALLS 5
static void gtk_spin_button_class_init (GtkSpinButtonClass *klass);
static void gtk_spin_button_init (GtkSpinButton *spin_button);
static void gtk_spin_button_finalize (GtkObject *object);
static void gtk_spin_button_map (GtkWidget *widget);
static void gtk_spin_button_unmap (GtkWidget *widget);
static void gtk_spin_button_realize (GtkWidget *widget);
static void gtk_spin_button_unrealize (GtkWidget *widget);
static void gtk_spin_button_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_spin_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_spin_button_paint (GtkWidget *widget,
GdkRectangle *area);
static void gtk_spin_button_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_spin_button_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_spin_button_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_spin_button_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_spin_button_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_spin_button_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_spin_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_spin_button_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
guint arrow);
static gint gtk_spin_button_timer (GtkSpinButton *spin_button);
static void gtk_spin_button_spin (GtkSpinButton *spin_button,
guint direction,
gfloat step);
static void gtk_spin_button_value_changed (GtkWidget *widget,
GtkSpinButton *spin_button);
static gint gtk_spin_button_key_press (GtkWidget *widget,
GdkEventKey *event);
static void gtk_spin_button_update (GtkSpinButton *spin_button);
static void gtk_spin_button_changed (GtkEditable *editable);
static void gtk_spin_button_activate (GtkEntry *entry);
static GtkWidgetClass *parent_class = NULL;
guint
gtk_spin_button_get_type ()
{
static guint spin_button_type = 0;
if (!spin_button_type)
{
GtkTypeInfo spin_button_info =
{
"GtkSpinButton",
sizeof (GtkSpinButton),
sizeof (GtkSpinButtonClass),
(GtkClassInitFunc) gtk_spin_button_class_init,
(GtkObjectInitFunc) gtk_spin_button_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
spin_button_type = gtk_type_unique (gtk_entry_get_type (),
&spin_button_info);
}
return spin_button_type;
}
static void
gtk_spin_button_class_init (GtkSpinButtonClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkEditableClass *editable_class;
GtkEntryClass *entry_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
entry_class = (GtkEntryClass*) class;
editable_class = (GtkEditableClass*) class;
parent_class = gtk_type_class (gtk_entry_get_type ());
object_class->finalize = gtk_spin_button_finalize;
widget_class->map = gtk_spin_button_map;
widget_class->unmap = gtk_spin_button_unmap;
widget_class->realize = gtk_spin_button_realize;
widget_class->unrealize = gtk_spin_button_unrealize;
widget_class->size_request = gtk_spin_button_size_request;
widget_class->size_allocate = gtk_spin_button_size_allocate;
widget_class->draw = gtk_spin_button_draw;
widget_class->expose_event = gtk_spin_button_expose;
widget_class->button_press_event = gtk_spin_button_button_press;
widget_class->button_release_event = gtk_spin_button_button_release;
widget_class->motion_notify_event = gtk_spin_button_motion_notify;
widget_class->key_press_event = gtk_spin_button_key_press;
widget_class->enter_notify_event = gtk_spin_button_enter_notify;
widget_class->leave_notify_event = gtk_spin_button_leave_notify;
widget_class->focus_out_event = gtk_spin_button_focus_out;
editable_class->changed = gtk_spin_button_changed;
entry_class->activate = gtk_spin_button_activate;
}
static void
gtk_spin_button_init (GtkSpinButton *spin_button)
{
spin_button->adjustment = NULL;
spin_button->panel = NULL;
spin_button->timer = 0;
spin_button->climb_rate = 0.0;
spin_button->timer_step = 0.0;
spin_button->update_policy = GTK_UPDATE_ALWAYS | GTK_UPDATE_SNAP_TO_TICKS;
spin_button->snapped = 0;
spin_button->in_child = 2;
spin_button->click_child = 2;
spin_button->button = 0;
spin_button->need_timer = 0;
spin_button->timer_calls = 0;
spin_button->digits = 0;
}
GtkWidget*
gtk_spin_button_new (GtkAdjustment *adjustment,
gfloat climb_rate,
gint digits)
{
GtkSpinButton *spin;
char buf[MAX_TEXT_LENGTH];
g_return_val_if_fail (digits >= 0 && digits < 128, NULL);
spin = gtk_type_new (gtk_spin_button_get_type ());
if (!adjustment)
adjustment = (GtkAdjustment*) gtk_adjustment_new (0, 0, 0, 0, 0, 0);
gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (spin), adjustment);
spin->digits = digits;
sprintf (buf, "%0.*f", digits, adjustment->value);
gtk_entry_set_text (GTK_ENTRY (spin), buf);
spin->climb_rate = climb_rate;
return GTK_WIDGET (spin);
}
static void
gtk_spin_button_finalize (GtkObject *object)
{
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (object));
gtk_object_unref (GTK_OBJECT (GTK_SPIN_BUTTON (object)->adjustment));
(* GTK_OBJECT_CLASS (parent_class)->finalize) (object);
}
static void
gtk_spin_button_map (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
if (!GTK_WIDGET_MAPPED (widget))
{
gdk_window_show (GTK_SPIN_BUTTON (widget)->panel);
GTK_WIDGET_CLASS (parent_class)->map (widget);
}
}
static void
gtk_spin_button_unmap (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
if (GTK_WIDGET_MAPPED (widget))
{
gdk_window_hide (GTK_SPIN_BUTTON (widget)->panel);
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
}
static void
gtk_spin_button_realize (GtkWidget *widget)
{
GtkSpinButton *spin;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
spin = GTK_SPIN_BUTTON (widget);
GTK_WIDGET_CLASS (parent_class)->realize (widget);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK
| GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
attributes.x = widget->allocation.x + widget->allocation.width
- ARROW_SIZE - 2 * widget->style->klass->xthickness;
attributes.y = widget->allocation.y;
attributes.width = ARROW_SIZE;
attributes.height = widget->allocation.height;
spin->panel = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gtk_style_set_background (widget->style, spin->panel, GTK_STATE_NORMAL);
gdk_window_set_user_data (spin->panel, widget);
}
static void
gtk_spin_button_unrealize (GtkWidget *widget)
{
GtkSpinButton *spin;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
spin = GTK_SPIN_BUTTON (widget);
GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
if (spin->panel)
{
gdk_window_destroy (spin->panel);
spin->panel = NULL;
}
}
static void
gtk_spin_button_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (requisition != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
requisition->width = MIN_SPIN_BUTTON_WIDTH + ARROW_SIZE
+ 2 * widget->style->klass->xthickness;
}
static void
gtk_spin_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAllocation child_allocation;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
g_return_if_fail (allocation != NULL);
child_allocation = *allocation;
child_allocation.width = allocation->width - ARROW_SIZE
- 2 * widget->style->klass->xthickness;
child_allocation.height = allocation->height;
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, &child_allocation);
widget->allocation = *allocation;
child_allocation.width = ARROW_SIZE + 2 * widget->style->klass->xthickness;
child_allocation.height = widget->requisition.height;
child_allocation.x = allocation->x + allocation->width - ARROW_SIZE
- 2 * widget->style->klass->xthickness;
child_allocation.y = allocation->y +
(allocation->height - widget->requisition.height) / 2;
gdk_window_move_resize (GTK_SPIN_BUTTON (widget)->panel,
child_allocation.x,
child_allocation.y,
child_allocation.width,
child_allocation.height);
}
static void
gtk_spin_button_paint (GtkWidget *widget,
GdkRectangle *area)
{
GtkSpinButton *spin;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
spin = GTK_SPIN_BUTTON (widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_draw_shadow (widget->style, spin->panel,
GTK_STATE_NORMAL, GTK_SHADOW_OUT,
0, 0, ARROW_SIZE + 2 * widget->style->klass->xthickness,
widget->requisition.height);
gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP);
gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN);
GTK_WIDGET_CLASS (parent_class)->draw (widget, area);
}
}
static void
gtk_spin_button_draw (GtkWidget *widget,
GdkRectangle *area)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
gtk_spin_button_paint (widget, area);
}
static gint
gtk_spin_button_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
gtk_spin_button_paint (widget, &event->area);
return FALSE;
}
static void
gtk_spin_button_draw_arrow (GtkSpinButton *spin_button,
guint arrow)
{
GtkStateType state_type;
GtkShadowType shadow_type;
GtkWidget *widget;
g_return_if_fail (spin_button != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
widget = GTK_WIDGET (spin_button);
if (GTK_WIDGET_DRAWABLE (spin_button))
{
if (spin_button->in_child == arrow)
{
if (spin_button->click_child == arrow)
state_type = GTK_STATE_ACTIVE;
else
state_type = GTK_STATE_PRELIGHT;
}
else
state_type = GTK_STATE_NORMAL;
if (spin_button->click_child == arrow)
shadow_type = GTK_SHADOW_IN;
else
shadow_type = GTK_SHADOW_OUT;
if (arrow == GTK_ARROW_UP)
{
gtk_draw_arrow (widget->style, spin_button->panel,
state_type, shadow_type, arrow, TRUE,
widget->style->klass->xthickness,
widget->style->klass->ythickness,
ARROW_SIZE,
widget->requisition.height / 2
- widget->style->klass->ythickness);
}
else
{
gtk_draw_arrow (widget->style, spin_button->panel,
state_type, shadow_type, arrow, TRUE,
widget->style->klass->xthickness,
widget->requisition.height / 2,
ARROW_SIZE,
widget->requisition.height / 2
- widget->style->klass->ythickness);
}
}
}
static gint
gtk_spin_button_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
spin = GTK_SPIN_BUTTON (widget);
if (event->window == spin->panel)
{
gint x;
gint y;
gdk_window_get_pointer (spin->panel, &x, &y, NULL);
if (y <= widget->requisition.height / 2)
{
spin->in_child = GTK_ARROW_UP;
if (spin->click_child == 2)
gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP);
}
else
{
spin->in_child = GTK_ARROW_DOWN;
if (spin->click_child == 2)
gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN);
}
}
return FALSE;
}
static gint
gtk_spin_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
spin = GTK_SPIN_BUTTON (widget);
if (event->window == spin->panel && spin->click_child == 2)
{
if (spin->in_child == GTK_ARROW_UP)
{
spin->in_child = 2;
gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP);
}
else
{
spin->in_child = 2;
gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN);
}
}
return FALSE;
}
static gint
gtk_spin_button_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
spin = GTK_SPIN_BUTTON (widget);
if ((spin->update_policy & GTK_UPDATE_SNAP_TO_TICKS) && !spin->snapped)
gtk_spin_button_update (spin);
GTK_WIDGET_CLASS (parent_class)->focus_out_event (widget, event);
return FALSE;
}
static gint
gtk_spin_button_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
spin = GTK_SPIN_BUTTON (widget);
if (event->type != GDK_BUTTON_PRESS)
return FALSE;
if (!spin->button)
{
if (event->window == spin->panel)
{
if (!GTK_WIDGET_HAS_FOCUS (widget))
gtk_widget_grab_focus (widget);
gtk_grab_add (widget);
spin->button = event->button;
if (event->y <= widget->requisition.height / 2)
{
spin->click_child = GTK_ARROW_UP;
if (event->button == 1)
{
gtk_spin_button_spin (spin, spin->click_child,
spin->adjustment->step_increment);
if (!spin->timer)
{
spin->timer_step = spin->adjustment->step_increment;
spin->need_timer = TRUE;
spin->timer = gtk_timeout_add
(SPIN_BUTTON_INITIAL_TIMER_DELAY,
(GtkFunction) gtk_spin_button_timer, (gpointer) spin);
}
}
else if (event->button == 2)
{
gtk_spin_button_spin (spin, spin->click_child,
spin->adjustment->page_increment);
if (!spin->timer)
{
spin->timer_step = spin->adjustment->page_increment;
spin->need_timer = TRUE;
spin->timer = gtk_timeout_add
(SPIN_BUTTON_INITIAL_TIMER_DELAY,
(GtkFunction) gtk_spin_button_timer, (gpointer) spin);
}
}
gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP);
}
else
{
spin->click_child = GTK_ARROW_DOWN;
if (event->button == 1)
{
gtk_spin_button_spin (spin, spin->click_child,
spin->adjustment->step_increment);
if (!spin->timer)
{
spin->timer_step = spin->adjustment->step_increment;
spin->need_timer = TRUE;
spin->timer = gtk_timeout_add
(SPIN_BUTTON_INITIAL_TIMER_DELAY,
(GtkFunction) gtk_spin_button_timer, (gpointer) spin);
}
}
else if (event->button == 2)
{
gtk_spin_button_spin (spin, spin->click_child,
spin->adjustment->page_increment);
if (!spin->timer)
{
spin->timer_step = spin->adjustment->page_increment;
spin->need_timer = TRUE;
spin->timer = gtk_timeout_add
(SPIN_BUTTON_INITIAL_TIMER_DELAY,
(GtkFunction) gtk_spin_button_timer, (gpointer) spin);
}
}
gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN);
}
}
else
GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, event);
}
return FALSE;
}
static gint
gtk_spin_button_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (event->type != GDK_BUTTON_RELEASE)
return FALSE;
spin = GTK_SPIN_BUTTON (widget);
if (event->button == spin->button)
{
guint click_child;
if (spin->timer)
{
gtk_timeout_remove (spin->timer);
spin->timer = 0;
spin->timer_calls = 0;
spin->need_timer = FALSE;
}
if (event->button == 3)
{
if (event->y >= 0 && event->x >= 0 &&
event->y <= widget->requisition.height &&
event->x <= ARROW_SIZE + 2 * widget->style->klass->xthickness)
{
if (spin->click_child == GTK_ARROW_UP &&
spin->adjustment->value < spin->adjustment->upper &&
event->y <= widget->requisition.height / 2)
{
spin->adjustment->value = spin->adjustment->upper;
gtk_signal_emit_by_name (GTK_OBJECT (spin->adjustment),
"value_changed");
}
else if (spin->click_child == GTK_ARROW_DOWN &&
spin->adjustment->value > spin->adjustment->lower &&
event->y > widget->requisition.height / 2)
{
spin->adjustment->value = spin->adjustment->lower;
gtk_signal_emit_by_name (GTK_OBJECT (spin->adjustment),
"value_changed");
}
}
}
gtk_grab_remove (widget);
click_child = spin->click_child;
spin->click_child = 2;
spin->button = 0;
gtk_spin_button_draw_arrow (spin, click_child);
}
else
GTK_WIDGET_CLASS (parent_class)->button_release_event (widget, event);
return FALSE;
}
static gint
gtk_spin_button_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
spin = GTK_SPIN_BUTTON (widget);
if (spin->button)
return FALSE;
if (event->window == spin->panel)
{
gint y;
y = event->y;
if (event->is_hint)
gdk_window_get_pointer (spin->panel, NULL, &y, NULL);
if (y <= widget->requisition.height / 2 &&
spin->in_child == GTK_ARROW_DOWN)
{
spin->in_child = GTK_ARROW_UP;
gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP);
gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN);
}
else if (y > widget->requisition.height / 2 &&
spin->in_child == GTK_ARROW_UP)
{
spin->in_child = GTK_ARROW_DOWN;
gtk_spin_button_draw_arrow (spin, GTK_ARROW_UP);
gtk_spin_button_draw_arrow (spin, GTK_ARROW_DOWN);
}
return FALSE;
}
GTK_WIDGET_CLASS (parent_class)->motion_notify_event (widget, event);
return FALSE;
}
static gint
gtk_spin_button_timer (GtkSpinButton *spin_button)
{
g_return_val_if_fail (spin_button != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), FALSE);
if (spin_button->timer)
{
gtk_spin_button_spin (spin_button, spin_button->click_child,
spin_button->timer_step);
if (spin_button->need_timer) {
spin_button->need_timer = FALSE;
spin_button->timer = gtk_timeout_add
(SPIN_BUTTON_TIMER_DELAY, (GtkFunction) gtk_spin_button_timer,
(gpointer) spin_button);
return FALSE;
}
else if (spin_button->climb_rate > 0.0 &&
spin_button->timer_step < spin_button->adjustment->page_increment)
{
if (spin_button->timer_calls < MAX_TIMER_CALLS)
spin_button->timer_calls++;
else
{
spin_button->timer_calls = 0;
spin_button->timer_step += spin_button->climb_rate;
}
}
return TRUE;
}
return FALSE;
}
static void
gtk_spin_button_spin (GtkSpinButton *spin_button,
guint direction,
gfloat step)
{
gfloat new_value = 0.0;
g_return_if_fail (spin_button != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (direction == GTK_ARROW_UP)
{
new_value = MIN (spin_button->adjustment->value + step,
spin_button->adjustment->upper);
}
else if (direction == GTK_ARROW_DOWN)
{
new_value = MAX (spin_button->adjustment->value - step,
spin_button->adjustment->lower);
}
if (new_value != spin_button->adjustment->value)
{
spin_button->adjustment->value = new_value;
gtk_signal_emit_by_name (GTK_OBJECT (spin_button->adjustment),
"value_changed");
}
}
static void
gtk_spin_button_value_changed (GtkWidget *widget,
GtkSpinButton *spin_button)
{
char buf[MAX_TEXT_LENGTH];
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ADJUSTMENT (widget));
sprintf (buf, "%0.*f", spin_button->digits, spin_button->adjustment->value);
gtk_entry_set_text (GTK_ENTRY (spin_button), buf);
}
static gint
gtk_spin_button_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkSpinButton *spin;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
spin = GTK_SPIN_BUTTON (widget);
switch (event->keyval)
{
case GDK_Up:
if (GTK_WIDGET_HAS_FOCUS (widget))
{
gtk_signal_emit_stop_by_name (GTK_OBJECT (widget),
"key_press_event");
gtk_spin_button_spin (spin, GTK_ARROW_UP,
spin->adjustment->step_increment);
return TRUE;
}
return FALSE;
case GDK_Down:
if (GTK_WIDGET_HAS_FOCUS (widget))
{
gtk_signal_emit_stop_by_name (GTK_OBJECT (widget),
"key_press_event");
gtk_spin_button_spin (spin, GTK_ARROW_DOWN,
spin->adjustment->step_increment);
return TRUE;
}
return FALSE;
case GDK_Page_Up:
if (event->state & GDK_CONTROL_MASK)
{
spin->adjustment->value = spin->adjustment->upper;
gtk_signal_emit_by_name (GTK_OBJECT (spin->adjustment),
"value_changed");
}
else
gtk_spin_button_spin (spin, GTK_ARROW_UP,
spin->adjustment->page_increment);
return TRUE;
case GDK_Page_Down:
if (event->state & GDK_CONTROL_MASK)
{
spin->adjustment->value = spin->adjustment->lower;
gtk_signal_emit_by_name (GTK_OBJECT (spin->adjustment),
"value_changed");
}
else
gtk_spin_button_spin (spin, GTK_ARROW_DOWN,
spin->adjustment->page_increment);
return TRUE;
default:
break;
}
return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
}
static void
gtk_spin_button_update (GtkSpinButton *spin_button)
{
gfloat tmp;
gfloat val;
gchar *error = NULL;
g_return_if_fail (spin_button != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
val = strtod (GTK_ENTRY (spin_button)->text, &error);
if (spin_button->update_policy & GTK_UPDATE_ALWAYS)
{
if (val < spin_button->adjustment->lower)
val = spin_button->adjustment->lower;
else if (val > spin_button->adjustment->upper)
val = spin_button->adjustment->upper;
}
else if ((spin_button->update_policy & GTK_UPDATE_IF_VALID) &&
(*error ||
val < spin_button->adjustment->lower ||
val > spin_button->adjustment->upper))
{
gtk_signal_emit_by_name (GTK_OBJECT (spin_button->adjustment),
"value_changed");
return;
}
if (spin_button->update_policy & GTK_UPDATE_SNAP_TO_TICKS)
{
gfloat inc;
inc = spin_button->adjustment->step_increment;
tmp = (val - spin_button->adjustment->lower) / inc;
if (tmp - floor (tmp) < ceil (tmp) - tmp)
val = spin_button->adjustment->lower + floor (tmp) * inc;
else
val = spin_button->adjustment->lower + ceil (tmp) * inc;
spin_button->snapped = 1;
}
spin_button->adjustment->value = val;
gtk_signal_emit_by_name (GTK_OBJECT (spin_button->adjustment),
"value_changed");
}
static void
gtk_spin_button_changed (GtkEditable *editable)
{
g_return_if_fail (editable != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (editable));
GTK_EDITABLE_CLASS (parent_class)->changed (editable);
if (GTK_WIDGET_VISIBLE (GTK_WIDGET (editable)))
{
GtkSpinButton *spin;
gfloat val;
gchar *error = NULL;
spin = GTK_SPIN_BUTTON (editable);
spin->snapped = 0;
val = strtod (GTK_ENTRY (editable)->text, &error);
if (val < spin->adjustment->lower)
val = spin->adjustment->lower;
else if (val > spin->adjustment->upper)
val = spin->adjustment->upper;
spin->adjustment->value = val;
}
}
static void
gtk_spin_button_activate (GtkEntry *entry)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (entry));
if (GTK_EDITABLE(entry)->editable)
gtk_spin_button_update (GTK_SPIN_BUTTON (entry));
}
void
gtk_spin_button_set_adjustment (GtkSpinButton *spin_button,
GtkAdjustment *adjustment)
{
g_return_if_fail (spin_button != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (spin_button->adjustment != adjustment)
{
if (spin_button->adjustment)
{
gtk_signal_disconnect_by_data (GTK_OBJECT (spin_button->adjustment),
(gpointer) spin_button);
gtk_object_unref (GTK_OBJECT (spin_button->adjustment));
}
spin_button->adjustment = adjustment;
if (adjustment)
{
gtk_object_ref (GTK_OBJECT (adjustment));
gtk_object_sink (GTK_OBJECT (adjustment));
gtk_signal_connect
(GTK_OBJECT (adjustment), "value_changed",
(GtkSignalFunc) gtk_spin_button_value_changed,
(gpointer) spin_button);
}
}
}
GtkAdjustment *
gtk_spin_button_get_adjustment (GtkSpinButton *spin_button)
{
g_return_val_if_fail (spin_button != NULL, NULL);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), NULL);
return spin_button->adjustment;
}
void
gtk_spin_button_set_digits (GtkSpinButton *spin_button,
gint digits)
{
g_return_if_fail (spin_button != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
g_return_if_fail (digits >= 0 || digits < 128);
if (spin_button->digits != digits)
{
spin_button->digits = digits;
if (GTK_WIDGET_VISIBLE (spin_button) && GTK_WIDGET_MAPPED (spin_button))
gtk_signal_emit_by_name (GTK_OBJECT (spin_button->adjustment),
"value_changed");
}
}
gfloat
gtk_spin_button_get_value_as_float (GtkSpinButton *spin_button)
{
g_return_val_if_fail (spin_button != NULL, 0.0);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0.0);
return spin_button->adjustment->value;
}
gint
gtk_spin_button_get_value_as_int (GtkSpinButton *spin_button)
{
gfloat val;
g_return_val_if_fail (spin_button != NULL, 0);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spin_button), 0);
val = spin_button->adjustment->value;
if (val - floor (val) < ceil (val) - val)
return floor (val);
else
return ceil (val);
}
void
gtk_spin_button_set_value (GtkSpinButton *spin_button,
gfloat value)
{
g_return_if_fail (spin_button != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
if (spin_button->adjustment->value != value)
{
spin_button->adjustment->value = value;
if (GTK_WIDGET_VISIBLE (spin_button) && GTK_WIDGET_MAPPED (spin_button))
gtk_signal_emit_by_name (GTK_OBJECT (spin_button->adjustment),
"value_changed");
}
}
void
gtk_spin_button_set_update_policy (GtkSpinButton *spin_button,
GtkSpinButtonUpdatePolicy policy)
{
g_return_if_fail (spin_button != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
spin_button->update_policy = policy;
}
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