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gtk2/gtk/gtkprogress.c
Tim Janik 7726d989b3 introduced ::xspacing and ::yspacing style properties which make all 
Fri Jul 14 16:13:37 2006  Tim Janik  <timj@gtk.org>

        * gtk/gtkprogressbar.c: introduced ::xspacing and ::yspacing style
        properties which make all hardcoded padding and spacing values
        configurable. properly swap ::text-xalign treatment for RTL widgets.

        * gtk/gtkprogress.c: fixed style property blurbs. made alignment
        proeprty more consistent with GtkMisc alignment blurbs. mention
        RTL treatment for text-xalign.
2006-08-29 10:22:27 +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 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 <math.h>
#include <string.h>
#undef GTK_DISABLE_DEPRECATED
#include "gtkprogress.h"
#define GTK_DISABLE_DEPRECATED
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkalias.h"
#define EPSILON 1e-5
#define DEFAULT_FORMAT "%P %%"
enum {
PROP_0,
PROP_ACTIVITY_MODE,
PROP_SHOW_TEXT,
PROP_TEXT_XALIGN,
PROP_TEXT_YALIGN
};
static void gtk_progress_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_progress_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_progress_destroy (GtkObject *object);
static void gtk_progress_finalize (GObject *object);
static void gtk_progress_realize (GtkWidget *widget);
static gboolean gtk_progress_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_progress_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_progress_create_pixmap (GtkProgress *progress);
static void gtk_progress_value_changed (GtkAdjustment *adjustment,
GtkProgress *progress);
static void gtk_progress_changed (GtkAdjustment *adjustment,
GtkProgress *progress);
G_DEFINE_TYPE (GtkProgress, gtk_progress, GTK_TYPE_WIDGET)
static void
gtk_progress_class_init (GtkProgressClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
gobject_class->finalize = gtk_progress_finalize;
gobject_class->set_property = gtk_progress_set_property;
gobject_class->get_property = gtk_progress_get_property;
object_class->destroy = gtk_progress_destroy;
widget_class->realize = gtk_progress_realize;
widget_class->expose_event = gtk_progress_expose;
widget_class->size_allocate = gtk_progress_size_allocate;
/* to be overridden */
class->paint = NULL;
class->update = NULL;
class->act_mode_enter = NULL;
g_object_class_install_property (gobject_class,
PROP_ACTIVITY_MODE,
g_param_spec_boolean ("activity-mode",
P_("Activity mode"),
P_("If TRUE, the GtkProgress is in activity mode, meaning that it signals "
"something is happening, but not how much of the activity is finished. "
"This is used when you're doing something but don't know how long it will take."),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_SHOW_TEXT,
g_param_spec_boolean ("show-text",
P_("Show text"),
P_("Whether the progress is shown as text."),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_TEXT_XALIGN,
g_param_spec_float ("text-xalign",
P_("Text x alignment"),
P_("The horizontal text alignment, from 0 (left) to 1 (right). Reversed for RTL layouts."),
0.0, 1.0, 0.5,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_TEXT_YALIGN,
g_param_spec_float ("text-yalign",
P_("Text y alignment"),
P_("The vertical text alignment, from 0 (top) to 1 (bottom)."),
0.0, 1.0, 0.5,
GTK_PARAM_READWRITE));
}
static void
gtk_progress_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkProgress *progress;
progress = GTK_PROGRESS (object);
switch (prop_id)
{
case PROP_ACTIVITY_MODE:
gtk_progress_set_activity_mode (progress, g_value_get_boolean (value));
break;
case PROP_SHOW_TEXT:
gtk_progress_set_show_text (progress, g_value_get_boolean (value));
break;
case PROP_TEXT_XALIGN:
gtk_progress_set_text_alignment (progress,
g_value_get_float (value),
progress->y_align);
break;
case PROP_TEXT_YALIGN:
gtk_progress_set_text_alignment (progress,
progress->x_align,
g_value_get_float (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_progress_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkProgress *progress;
progress = GTK_PROGRESS (object);
switch (prop_id)
{
case PROP_ACTIVITY_MODE:
g_value_set_boolean (value, (progress->activity_mode != FALSE));
break;
case PROP_SHOW_TEXT:
g_value_set_boolean (value, (progress->show_text != FALSE));
break;
case PROP_TEXT_XALIGN:
g_value_set_float (value, progress->x_align);
break;
case PROP_TEXT_YALIGN:
g_value_set_float (value, progress->y_align);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_progress_init (GtkProgress *progress)
{
progress->adjustment = NULL;
progress->offscreen_pixmap = NULL;
progress->format = g_strdup (DEFAULT_FORMAT);
progress->x_align = 0.5;
progress->y_align = 0.5;
progress->show_text = FALSE;
progress->activity_mode = FALSE;
progress->use_text_format = TRUE;
}
static void
gtk_progress_realize (GtkWidget *widget)
{
GtkProgress *progress;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (GTK_IS_PROGRESS (widget));
progress = GTK_PROGRESS (widget);
GTK_WIDGET_SET_FLAGS (widget, 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;
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, progress);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
gtk_progress_create_pixmap (progress);
}
static void
gtk_progress_destroy (GtkObject *object)
{
GtkProgress *progress;
g_return_if_fail (GTK_IS_PROGRESS (object));
progress = GTK_PROGRESS (object);
if (progress->adjustment)
{
g_signal_handlers_disconnect_by_func (progress->adjustment,
gtk_progress_value_changed,
progress);
g_signal_handlers_disconnect_by_func (progress->adjustment,
gtk_progress_changed,
progress);
g_object_unref (progress->adjustment);
progress->adjustment = NULL;
}
GTK_OBJECT_CLASS (gtk_progress_parent_class)->destroy (object);
}
static void
gtk_progress_finalize (GObject *object)
{
GtkProgress *progress;
g_return_if_fail (GTK_IS_PROGRESS (object));
progress = GTK_PROGRESS (object);
if (progress->offscreen_pixmap)
g_object_unref (progress->offscreen_pixmap);
if (progress->format)
g_free (progress->format);
G_OBJECT_CLASS (gtk_progress_parent_class)->finalize (object);
}
static gboolean
gtk_progress_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (GTK_IS_PROGRESS (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
gdk_draw_drawable (widget->window,
widget->style->black_gc,
GTK_PROGRESS (widget)->offscreen_pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width,
event->area.height);
return FALSE;
}
static void
gtk_progress_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
g_return_if_fail (GTK_IS_PROGRESS (widget));
g_return_if_fail (allocation != NULL);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gtk_progress_create_pixmap (GTK_PROGRESS (widget));
}
}
static void
gtk_progress_create_pixmap (GtkProgress *progress)
{
GtkWidget *widget;
g_return_if_fail (GTK_IS_PROGRESS (progress));
if (GTK_WIDGET_REALIZED (progress))
{
widget = GTK_WIDGET (progress);
if (progress->offscreen_pixmap)
g_object_unref (progress->offscreen_pixmap);
progress->offscreen_pixmap = gdk_pixmap_new (widget->window,
widget->allocation.width,
widget->allocation.height,
-1);
/* clear the pixmap for transparent themes */
gtk_paint_flat_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_NORMAL, GTK_SHADOW_NONE,
NULL, widget, "trough", 0, 0, -1, -1);
GTK_PROGRESS_GET_CLASS (progress)->paint (progress);
}
}
static void
gtk_progress_changed (GtkAdjustment *adjustment,
GtkProgress *progress)
{
/* A change in the value of adjustment->upper can change
* the size request
*/
if (progress->use_text_format && progress->show_text)
gtk_widget_queue_resize (GTK_WIDGET (progress));
else
GTK_PROGRESS_GET_CLASS (progress)->update (progress);
}
static void
gtk_progress_value_changed (GtkAdjustment *adjustment,
GtkProgress *progress)
{
GTK_PROGRESS_GET_CLASS (progress)->update (progress);
}
static gchar *
gtk_progress_build_string (GtkProgress *progress,
gdouble value,
gdouble percentage)
{
gchar buf[256] = { 0 };
gchar tmp[256] = { 0 };
gchar *src;
gchar *dest;
gchar fmt[10];
src = progress->format;
/* This is the new supported version of this function */
if (!progress->use_text_format)
return g_strdup (src);
/* And here's all the deprecated goo. */
dest = buf;
while (src && *src)
{
if (*src != '%')
{
*dest = *src;
dest++;
}
else
{
gchar c;
gint digits;
c = *(src + sizeof(gchar));
digits = 0;
if (c >= '0' && c <= '2')
{
digits = (gint) (c - '0');
src++;
c = *(src + sizeof(gchar));
}
switch (c)
{
case '%':
*dest = '%';
src++;
dest++;
break;
case 'p':
case 'P':
if (digits)
{
g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
g_snprintf (tmp, sizeof (tmp), fmt, 100 * percentage);
}
else
g_snprintf (tmp, sizeof (tmp), "%.0f", 100 * percentage);
strcat (buf, tmp);
dest = &(buf[strlen (buf)]);
src++;
break;
case 'v':
case 'V':
if (digits)
{
g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
g_snprintf (tmp, sizeof (tmp), fmt, value);
}
else
g_snprintf (tmp, sizeof (tmp), "%.0f", value);
strcat (buf, tmp);
dest = &(buf[strlen (buf)]);
src++;
break;
case 'l':
case 'L':
if (digits)
{
g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
g_snprintf (tmp, sizeof (tmp), fmt, progress->adjustment->lower);
}
else
g_snprintf (tmp, sizeof (tmp), "%.0f", progress->adjustment->lower);
strcat (buf, tmp);
dest = &(buf[strlen (buf)]);
src++;
break;
case 'u':
case 'U':
if (digits)
{
g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
g_snprintf (tmp, sizeof (tmp), fmt, progress->adjustment->upper);
}
else
g_snprintf (tmp, sizeof (tmp), "%.0f", progress->adjustment->upper);
strcat (buf, tmp);
dest = &(buf[strlen (buf)]);
src++;
break;
default:
break;
}
}
src++;
}
return g_strdup (buf);
}
/***************************************************************/
void
gtk_progress_set_adjustment (GtkProgress *progress,
GtkAdjustment *adjustment)
{
g_return_if_fail (GTK_IS_PROGRESS (progress));
if (adjustment)
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
else
adjustment = (GtkAdjustment*) gtk_adjustment_new (0, 0, 100, 0, 0, 0);
if (progress->adjustment != adjustment)
{
if (progress->adjustment)
{
g_signal_handlers_disconnect_by_func (progress->adjustment,
gtk_progress_changed,
progress);
g_signal_handlers_disconnect_by_func (progress->adjustment,
gtk_progress_value_changed,
progress);
g_object_unref (progress->adjustment);
}
progress->adjustment = adjustment;
if (adjustment)
{
g_object_ref_sink (adjustment);
g_signal_connect (adjustment, "changed",
G_CALLBACK (gtk_progress_changed),
progress);
g_signal_connect (adjustment, "value_changed",
G_CALLBACK (gtk_progress_value_changed),
progress);
}
gtk_progress_changed (adjustment, progress);
}
}
void
gtk_progress_configure (GtkProgress *progress,
gdouble value,
gdouble min,
gdouble max)
{
GtkAdjustment *adj;
gboolean changed = FALSE;
g_return_if_fail (GTK_IS_PROGRESS (progress));
g_return_if_fail (min <= max);
g_return_if_fail (value >= min && value <= max);
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
adj = progress->adjustment;
if (fabs (adj->lower - min) > EPSILON || fabs (adj->upper - max) > EPSILON)
changed = TRUE;
adj->value = value;
adj->lower = min;
adj->upper = max;
gtk_adjustment_value_changed (adj);
if (changed)
gtk_adjustment_changed (adj);
}
void
gtk_progress_set_percentage (GtkProgress *progress,
gdouble percentage)
{
g_return_if_fail (GTK_IS_PROGRESS (progress));
g_return_if_fail (percentage >= 0 && percentage <= 1.0);
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
gtk_progress_set_value (progress, progress->adjustment->lower + percentage *
(progress->adjustment->upper - progress->adjustment->lower));
}
gdouble
gtk_progress_get_current_percentage (GtkProgress *progress)
{
g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
return gtk_progress_get_percentage_from_value (progress, progress->adjustment->value);
}
gdouble
gtk_progress_get_percentage_from_value (GtkProgress *progress,
gdouble value)
{
g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
if (progress->adjustment->lower < progress->adjustment->upper &&
value >= progress->adjustment->lower &&
value <= progress->adjustment->upper)
return (value - progress->adjustment->lower) /
(progress->adjustment->upper - progress->adjustment->lower);
else
return 0.0;
}
void
gtk_progress_set_value (GtkProgress *progress,
gdouble value)
{
g_return_if_fail (GTK_IS_PROGRESS (progress));
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
if (fabs (progress->adjustment->value - value) > EPSILON)
gtk_adjustment_set_value (progress->adjustment, value);
}
gdouble
gtk_progress_get_value (GtkProgress *progress)
{
g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
return progress->adjustment ? progress->adjustment->value : 0;
}
void
gtk_progress_set_show_text (GtkProgress *progress,
gboolean show_text)
{
g_return_if_fail (GTK_IS_PROGRESS (progress));
if (progress->show_text != show_text)
{
progress->show_text = show_text;
gtk_widget_queue_resize (GTK_WIDGET (progress));
g_object_notify (G_OBJECT (progress), "show-text");
}
}
void
gtk_progress_set_text_alignment (GtkProgress *progress,
gfloat x_align,
gfloat y_align)
{
g_return_if_fail (GTK_IS_PROGRESS (progress));
g_return_if_fail (x_align >= 0.0 && x_align <= 1.0);
g_return_if_fail (y_align >= 0.0 && y_align <= 1.0);
if (progress->x_align != x_align || progress->y_align != y_align)
{
g_object_freeze_notify (G_OBJECT (progress));
if (progress->x_align != x_align)
{
progress->x_align = x_align;
g_object_notify (G_OBJECT (progress), "text-xalign");
}
if (progress->y_align != y_align)
{
progress->y_align = y_align;
g_object_notify (G_OBJECT (progress), "text-yalign");
}
g_object_thaw_notify (G_OBJECT (progress));
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
gtk_widget_queue_resize (GTK_WIDGET (progress));
}
}
void
gtk_progress_set_format_string (GtkProgress *progress,
const gchar *format)
{
gchar *old_format;
g_return_if_fail (GTK_IS_PROGRESS (progress));
/* Turn on format, in case someone called
* gtk_progress_bar_set_text() and turned it off.
*/
progress->use_text_format = TRUE;
old_format = progress->format;
if (!format)
format = DEFAULT_FORMAT;
progress->format = g_strdup (format);
g_free (old_format);
gtk_widget_queue_resize (GTK_WIDGET (progress));
}
gchar *
gtk_progress_get_current_text (GtkProgress *progress)
{
g_return_val_if_fail (GTK_IS_PROGRESS (progress), NULL);
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
return gtk_progress_build_string (progress, progress->adjustment->value,
gtk_progress_get_current_percentage (progress));
}
gchar *
gtk_progress_get_text_from_value (GtkProgress *progress,
gdouble value)
{
g_return_val_if_fail (GTK_IS_PROGRESS (progress), NULL);
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
return gtk_progress_build_string (progress, value,
gtk_progress_get_percentage_from_value (progress, value));
}
void
gtk_progress_set_activity_mode (GtkProgress *progress,
gboolean activity_mode)
{
g_return_if_fail (GTK_IS_PROGRESS (progress));
if (progress->activity_mode != (activity_mode != FALSE))
{
progress->activity_mode = (activity_mode != FALSE);
if (progress->activity_mode)
GTK_PROGRESS_GET_CLASS (progress)->act_mode_enter (progress);
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
gtk_widget_queue_resize (GTK_WIDGET (progress));
g_object_notify (G_OBJECT (progress), "activity-mode");
}
}
#define __GTK_PROGRESS_C__
#include "gtkaliasdef.c"
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