AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
2395ed0826
gtk2/gtk/gtkspinbutton.c
Tim Janik 3eac46a981 realization fixes by lars. 
-timj
1998-03-03 00:20:49 +00:00

1043 lines
29 KiB
C
Raw Blame History

/* 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_REALIZED (widget) && !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_set_user_data (spin->panel, NULL);
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;
if (GTK_WIDGET_REALIZED (widget))
{
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 (!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;
}
Reference in New Issue View Git Blame Copy Permalink