forked from AuroraMiddleware/gtk
480 lines
12 KiB
C
480 lines
12 KiB
C
/* 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 Lesser 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GTK+ Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include "gtkalias.h"
|
|
#include "gtkruler.h"
|
|
#include "gtkintl.h"
|
|
|
|
enum {
|
|
PROP_0,
|
|
PROP_LOWER,
|
|
PROP_UPPER,
|
|
PROP_POSITION,
|
|
PROP_MAX_SIZE
|
|
};
|
|
|
|
static void gtk_ruler_class_init (GtkRulerClass *klass);
|
|
static void gtk_ruler_init (GtkRuler *ruler);
|
|
static void gtk_ruler_realize (GtkWidget *widget);
|
|
static void gtk_ruler_unrealize (GtkWidget *widget);
|
|
static void gtk_ruler_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation);
|
|
static gint gtk_ruler_expose (GtkWidget *widget,
|
|
GdkEventExpose *event);
|
|
static void gtk_ruler_make_pixmap (GtkRuler *ruler);
|
|
static void gtk_ruler_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec);
|
|
static void gtk_ruler_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec);
|
|
|
|
static GtkWidgetClass *parent_class;
|
|
|
|
static const GtkRulerMetric ruler_metrics[] =
|
|
{
|
|
{"Pixels", "Pi", 1.0, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }},
|
|
{"Inches", "In", 72.0, { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 }, { 1, 2, 4, 8, 16 }},
|
|
{"Centimeters", "Cn", 28.35, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }},
|
|
};
|
|
|
|
|
|
GType
|
|
gtk_ruler_get_type (void)
|
|
{
|
|
static GType ruler_type = 0;
|
|
|
|
if (!ruler_type)
|
|
{
|
|
static const GTypeInfo ruler_info =
|
|
{
|
|
sizeof (GtkRulerClass),
|
|
NULL, /* base_init */
|
|
NULL, /* base_finalize */
|
|
(GClassInitFunc) gtk_ruler_class_init,
|
|
NULL, /* class_finalize */
|
|
NULL, /* class_data */
|
|
sizeof (GtkRuler),
|
|
0, /* n_preallocs */
|
|
(GInstanceInitFunc) gtk_ruler_init,
|
|
};
|
|
|
|
ruler_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkRuler",
|
|
&ruler_info, 0);
|
|
}
|
|
|
|
return ruler_type;
|
|
}
|
|
|
|
static void
|
|
gtk_ruler_class_init (GtkRulerClass *class)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GtkWidgetClass *widget_class;
|
|
|
|
gobject_class = G_OBJECT_CLASS (class);
|
|
widget_class = (GtkWidgetClass*) class;
|
|
|
|
parent_class = g_type_class_peek_parent (class);
|
|
|
|
gobject_class->set_property = gtk_ruler_set_property;
|
|
gobject_class->get_property = gtk_ruler_get_property;
|
|
|
|
widget_class->realize = gtk_ruler_realize;
|
|
widget_class->unrealize = gtk_ruler_unrealize;
|
|
widget_class->size_allocate = gtk_ruler_size_allocate;
|
|
widget_class->expose_event = gtk_ruler_expose;
|
|
|
|
class->draw_ticks = NULL;
|
|
class->draw_pos = NULL;
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_LOWER,
|
|
g_param_spec_double ("lower",
|
|
P_("Lower"),
|
|
P_("Lower limit of ruler"),
|
|
-G_MAXDOUBLE,
|
|
G_MAXDOUBLE,
|
|
0.0,
|
|
G_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_UPPER,
|
|
g_param_spec_double ("upper",
|
|
P_("Upper"),
|
|
P_("Upper limit of ruler"),
|
|
-G_MAXDOUBLE,
|
|
G_MAXDOUBLE,
|
|
0.0,
|
|
G_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_POSITION,
|
|
g_param_spec_double ("position",
|
|
P_("Position"),
|
|
P_("Position of mark on the ruler"),
|
|
-G_MAXDOUBLE,
|
|
G_MAXDOUBLE,
|
|
0.0,
|
|
G_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_MAX_SIZE,
|
|
g_param_spec_double ("max-size",
|
|
P_("Max Size"),
|
|
P_("Maximum size of the ruler"),
|
|
-G_MAXDOUBLE,
|
|
G_MAXDOUBLE,
|
|
0.0,
|
|
G_PARAM_READWRITE));
|
|
}
|
|
|
|
static void
|
|
gtk_ruler_init (GtkRuler *ruler)
|
|
{
|
|
ruler->backing_store = NULL;
|
|
ruler->non_gr_exp_gc = NULL;
|
|
ruler->xsrc = 0;
|
|
ruler->ysrc = 0;
|
|
ruler->slider_size = 0;
|
|
ruler->lower = 0;
|
|
ruler->upper = 0;
|
|
ruler->position = 0;
|
|
ruler->max_size = 0;
|
|
|
|
gtk_ruler_set_metric (ruler, GTK_PIXELS);
|
|
}
|
|
|
|
static void
|
|
gtk_ruler_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkRuler *ruler = GTK_RULER (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_LOWER:
|
|
gtk_ruler_set_range (ruler, g_value_get_double (value), ruler->upper,
|
|
ruler->position, ruler->max_size);
|
|
break;
|
|
case PROP_UPPER:
|
|
gtk_ruler_set_range (ruler, ruler->lower, g_value_get_double (value),
|
|
ruler->position, ruler->max_size);
|
|
break;
|
|
case PROP_POSITION:
|
|
gtk_ruler_set_range (ruler, ruler->lower, ruler->upper,
|
|
g_value_get_double (value), ruler->max_size);
|
|
break;
|
|
case PROP_MAX_SIZE:
|
|
gtk_ruler_set_range (ruler, ruler->lower, ruler->upper,
|
|
ruler->position, g_value_get_double (value));
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_ruler_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkRuler *ruler = GTK_RULER (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_LOWER:
|
|
g_value_set_double (value, ruler->lower);
|
|
break;
|
|
case PROP_UPPER:
|
|
g_value_set_double (value, ruler->upper);
|
|
break;
|
|
case PROP_POSITION:
|
|
g_value_set_double (value, ruler->position);
|
|
break;
|
|
case PROP_MAX_SIZE:
|
|
g_value_set_double (value, ruler->max_size);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_ruler_set_metric (GtkRuler *ruler,
|
|
GtkMetricType metric)
|
|
{
|
|
g_return_if_fail (GTK_IS_RULER (ruler));
|
|
|
|
ruler->metric = (GtkRulerMetric *) &ruler_metrics[metric];
|
|
|
|
if (GTK_WIDGET_DRAWABLE (ruler))
|
|
gtk_widget_queue_draw (GTK_WIDGET (ruler));
|
|
}
|
|
|
|
/**
|
|
* gtk_ruler_get_metric:
|
|
* @ruler: a #GtkRuler
|
|
*
|
|
* Gets the units used for a #GtkRuler. See gtk_ruler_set_metric().
|
|
*
|
|
* Return value: the units currently used for @ruler
|
|
**/
|
|
GtkMetricType
|
|
gtk_ruler_get_metric (GtkRuler *ruler)
|
|
{
|
|
gint i;
|
|
|
|
g_return_val_if_fail (GTK_IS_RULER (ruler), 0);
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (ruler_metrics); i++)
|
|
if (ruler->metric == &ruler_metrics[i])
|
|
return i;
|
|
|
|
g_assert_not_reached ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
gtk_ruler_set_range (GtkRuler *ruler,
|
|
gdouble lower,
|
|
gdouble upper,
|
|
gdouble position,
|
|
gdouble max_size)
|
|
{
|
|
g_return_if_fail (GTK_IS_RULER (ruler));
|
|
|
|
g_object_freeze_notify (G_OBJECT (ruler));
|
|
if (ruler->lower != lower)
|
|
{
|
|
ruler->lower = lower;
|
|
g_object_notify (G_OBJECT (ruler), "lower");
|
|
}
|
|
if (ruler->upper != upper)
|
|
{
|
|
ruler->upper = upper;
|
|
g_object_notify (G_OBJECT (ruler), "upper");
|
|
}
|
|
if (ruler->position != position)
|
|
{
|
|
ruler->position = position;
|
|
g_object_notify (G_OBJECT (ruler), "position");
|
|
}
|
|
if (ruler->max_size != max_size)
|
|
{
|
|
ruler->max_size = max_size;
|
|
g_object_notify (G_OBJECT (ruler), "max_size");
|
|
}
|
|
g_object_thaw_notify (G_OBJECT (ruler));
|
|
|
|
if (GTK_WIDGET_DRAWABLE (ruler))
|
|
gtk_widget_queue_draw (GTK_WIDGET (ruler));
|
|
}
|
|
|
|
/**
|
|
* gtk_ruler_get_range:
|
|
* @ruler: a #GtkRuler
|
|
* @lower: location to store lower limit of the ruler, or %NULL
|
|
* @upper: location to store upper limit of the ruler, or %NULL
|
|
* @position: location to store the current position of the mark on the ruler, or %NULL
|
|
* @max_size: location to store the maximum size of the ruler used when calculating
|
|
* the space to leave for the text, or %NULL.
|
|
*
|
|
* Retrieves values indicating the range and current position of a #GtkRuler.
|
|
* See gtk_ruler_set_range().
|
|
**/
|
|
void
|
|
gtk_ruler_get_range (GtkRuler *ruler,
|
|
gdouble *lower,
|
|
gdouble *upper,
|
|
gdouble *position,
|
|
gdouble *max_size)
|
|
{
|
|
g_return_if_fail (GTK_IS_RULER (ruler));
|
|
|
|
if (lower)
|
|
*lower = ruler->lower;
|
|
if (upper)
|
|
*upper = ruler->upper;
|
|
if (position)
|
|
*position = ruler->position;
|
|
if (max_size)
|
|
*max_size = ruler->max_size;
|
|
}
|
|
|
|
void
|
|
gtk_ruler_draw_ticks (GtkRuler *ruler)
|
|
{
|
|
g_return_if_fail (GTK_IS_RULER (ruler));
|
|
|
|
if (GTK_RULER_GET_CLASS (ruler)->draw_ticks)
|
|
GTK_RULER_GET_CLASS (ruler)->draw_ticks (ruler);
|
|
}
|
|
|
|
void
|
|
gtk_ruler_draw_pos (GtkRuler *ruler)
|
|
{
|
|
g_return_if_fail (GTK_IS_RULER (ruler));
|
|
|
|
if (GTK_RULER_GET_CLASS (ruler)->draw_pos)
|
|
GTK_RULER_GET_CLASS (ruler)->draw_pos (ruler);
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_ruler_realize (GtkWidget *widget)
|
|
{
|
|
GtkRuler *ruler;
|
|
GdkWindowAttr attributes;
|
|
gint attributes_mask;
|
|
|
|
ruler = GTK_RULER (widget);
|
|
GTK_WIDGET_SET_FLAGS (ruler, GTK_REALIZED);
|
|
|
|
attributes.window_type = GDK_WINDOW_CHILD;
|
|
attributes.x = widget->allocation.x;
|
|
attributes.y = widget->allocation.y;
|
|
attributes.width = widget->allocation.width;
|
|
attributes.height = widget->allocation.height;
|
|
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_POINTER_MOTION_MASK |
|
|
GDK_POINTER_MOTION_HINT_MASK);
|
|
|
|
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
|
|
|
|
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
|
|
gdk_window_set_user_data (widget->window, ruler);
|
|
|
|
widget->style = gtk_style_attach (widget->style, widget->window);
|
|
gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
|
|
|
|
gtk_ruler_make_pixmap (ruler);
|
|
}
|
|
|
|
static void
|
|
gtk_ruler_unrealize (GtkWidget *widget)
|
|
{
|
|
GtkRuler *ruler = GTK_RULER (widget);
|
|
|
|
if (ruler->backing_store)
|
|
g_object_unref (ruler->backing_store);
|
|
if (ruler->non_gr_exp_gc)
|
|
g_object_unref (ruler->non_gr_exp_gc);
|
|
|
|
ruler->backing_store = NULL;
|
|
ruler->non_gr_exp_gc = NULL;
|
|
|
|
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
|
|
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
|
|
}
|
|
|
|
static void
|
|
gtk_ruler_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GtkRuler *ruler = GTK_RULER (widget);
|
|
|
|
widget->allocation = *allocation;
|
|
|
|
if (GTK_WIDGET_REALIZED (widget))
|
|
{
|
|
gdk_window_move_resize (widget->window,
|
|
allocation->x, allocation->y,
|
|
allocation->width, allocation->height);
|
|
|
|
gtk_ruler_make_pixmap (ruler);
|
|
}
|
|
}
|
|
|
|
static gint
|
|
gtk_ruler_expose (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
GtkRuler *ruler;
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
ruler = GTK_RULER (widget);
|
|
|
|
gtk_ruler_draw_ticks (ruler);
|
|
|
|
gdk_draw_drawable (widget->window,
|
|
ruler->non_gr_exp_gc,
|
|
ruler->backing_store,
|
|
0, 0, 0, 0,
|
|
widget->allocation.width,
|
|
widget->allocation.height);
|
|
|
|
gtk_ruler_draw_pos (ruler);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_ruler_make_pixmap (GtkRuler *ruler)
|
|
{
|
|
GtkWidget *widget;
|
|
gint width;
|
|
gint height;
|
|
|
|
widget = GTK_WIDGET (ruler);
|
|
|
|
if (ruler->backing_store)
|
|
{
|
|
gdk_drawable_get_size (ruler->backing_store, &width, &height);
|
|
if ((width == widget->allocation.width) &&
|
|
(height == widget->allocation.height))
|
|
return;
|
|
|
|
g_object_unref (ruler->backing_store);
|
|
}
|
|
|
|
ruler->backing_store = gdk_pixmap_new (widget->window,
|
|
widget->allocation.width,
|
|
widget->allocation.height,
|
|
-1);
|
|
|
|
ruler->xsrc = 0;
|
|
ruler->ysrc = 0;
|
|
|
|
if (!ruler->non_gr_exp_gc)
|
|
{
|
|
ruler->non_gr_exp_gc = gdk_gc_new (widget->window);
|
|
gdk_gc_set_exposures (ruler->non_gr_exp_gc, FALSE);
|
|
}
|
|
}
|