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gtk/gtk/gtkruler.c
Matthias Clasen 98c23811f5 Don't leak no_gr_exp_gc. (#350050, Chris Wilson) 
2006-08-15  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtkruler.c (gtk_ruler_unrealize): Don't leak
	no_gr_exp_gc.  (#350050, Chris Wilson)
2006-08-15 17:12:23 +00:00

482 lines
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C
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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 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 "gtkruler.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkalias.h"
enum {
PROP_0,
PROP_LOWER,
PROP_UPPER,
PROP_POSITION,
PROP_MAX_SIZE,
PROP_METRIC
};
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 const GtkRulerMetric ruler_metrics[] =
{
{ "Pixel", "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 }},
};
G_DEFINE_TYPE (GtkRuler, gtk_ruler, GTK_TYPE_WIDGET)
static void
gtk_ruler_class_init (GtkRulerClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass*) 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,
GTK_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,
GTK_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,
GTK_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,
GTK_PARAM_READWRITE));
/**
* GtkRuler:metric:
*
* The metric used for the ruler.
*
* Since: 2.8
*/
g_object_class_install_property (gobject_class,
PROP_METRIC,
g_param_spec_enum ("metric",
P_("Metric"),
P_("The metric used for the ruler"),
GTK_TYPE_METRIC_TYPE,
GTK_PIXELS,
GTK_PARAM_READWRITE));
}
static void
gtk_ruler_init (GtkRuler *ruler)
{
ruler->backing_store = 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;
case PROP_METRIC:
gtk_ruler_set_metric (ruler, g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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;
case PROP_METRIC:
g_value_set_enum (value, gtk_ruler_get_metric (ruler));
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));
g_object_notify (G_OBJECT (ruler), "metric");
}
/**
* 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);
ruler->backing_store = NULL;
}
if (ruler->non_gr_exp_gc)
{
g_object_unref (ruler->non_gr_exp_gc);
ruler->non_gr_exp_gc = NULL;
}
if (GTK_WIDGET_CLASS (gtk_ruler_parent_class)->unrealize)
(* GTK_WIDGET_CLASS (gtk_ruler_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);
}
}
#define __GTK_RULER_C__
#include "gtkaliasdef.c"
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