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gtk2/gtk/gtkprogressbar.c
Owen Taylor 4e2b60ac4d Patch from Matthias Clasen to remove remove all instances of 
Wed Jul 18 19:28:46 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/*.c: Patch from Matthias Clasen to remove remove
	all instances of g_return_if_fail (foo != NULL); that are
	immediately before a g_return_if_fail (GTK_IS_FOO (foo));
	since the second check catches the NULL anyways.
2001-07-18 23:39:26 +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/.
*/
#if HAVE_CONFIG_H
# include <config.h>
# if STDC_HEADERS
# include <string.h>
# include <stdio.h>
# endif
#else
# include <stdio.h>
#endif
#include "gtkprogressbar.h"
#include "gtksignal.h"
#include "gtkintl.h"
#define MIN_HORIZONTAL_BAR_WIDTH 150
#define MIN_HORIZONTAL_BAR_HEIGHT 20
#define MIN_VERTICAL_BAR_WIDTH 22
#define MIN_VERTICAL_BAR_HEIGHT 80
#define MAX_TEXT_LENGTH 80
#define TEXT_SPACING 2
enum {
PROP_0,
/* Supported args */
PROP_FRACTION,
PROP_PULSE_STEP,
PROP_ORIENTATION,
PROP_TEXT,
/* Deprecated args */
PROP_ADJUSTMENT,
PROP_BAR_STYLE,
PROP_ACTIVITY_STEP,
PROP_ACTIVITY_BLOCKS,
PROP_DISCRETE_BLOCKS
};
static void gtk_progress_bar_class_init (GtkProgressBarClass *klass);
static void gtk_progress_bar_init (GtkProgressBar *pbar);
static void gtk_progress_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_progress_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_progress_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_progress_bar_real_update (GtkProgress *progress);
static void gtk_progress_bar_paint (GtkProgress *progress);
static void gtk_progress_bar_act_mode_enter (GtkProgress *progress);
GtkType
gtk_progress_bar_get_type (void)
{
static GtkType progress_bar_type = 0;
if (!progress_bar_type)
{
static const GtkTypeInfo progress_bar_info =
{
"GtkProgressBar",
sizeof (GtkProgressBar),
sizeof (GtkProgressBarClass),
(GtkClassInitFunc) gtk_progress_bar_class_init,
(GtkObjectInitFunc) gtk_progress_bar_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
progress_bar_type = gtk_type_unique (GTK_TYPE_PROGRESS, &progress_bar_info);
}
return progress_bar_type;
}
static void
gtk_progress_bar_class_init (GtkProgressBarClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkProgressClass *progress_class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass *) class;
progress_class = (GtkProgressClass *) class;
gobject_class->set_property = gtk_progress_bar_set_property;
gobject_class->get_property = gtk_progress_bar_get_property;
widget_class->size_request = gtk_progress_bar_size_request;
progress_class->paint = gtk_progress_bar_paint;
progress_class->update = gtk_progress_bar_real_update;
progress_class->act_mode_enter = gtk_progress_bar_act_mode_enter;
g_object_class_install_property (gobject_class,
PROP_ADJUSTMENT,
g_param_spec_object ("adjustment",
_("Adjustment"),
_("The GtkAdjustment connected to the progress bar (Deprecated)"),
GTK_TYPE_ADJUSTMENT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ORIENTATION,
g_param_spec_enum ("orientation",
_("Orientation"),
_("Orientation and growth of the progress bar"),
GTK_TYPE_PROGRESS_BAR_ORIENTATION,
GTK_PROGRESS_LEFT_TO_RIGHT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_BAR_STYLE,
g_param_spec_enum ("bar_style",
_("Bar style"),
_("Specifies the visual style of the bar in percentage mode (Deprecated)"),
GTK_TYPE_PROGRESS_BAR_STYLE,
GTK_PROGRESS_CONTINUOUS,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ACTIVITY_STEP,
g_param_spec_uint ("activity_step",
_("Activity Step"),
_("The increment used for each iteration in activity mode (Deprecated)"),
-G_MAXUINT,
G_MAXUINT,
3,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ACTIVITY_BLOCKS,
g_param_spec_uint ("activity_blocks",
_("Activity Blocks"),
_("The number of blocks which can fit in the progress bar area in activity mode (Deprecated)"),
2,
G_MAXUINT,
5,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_DISCRETE_BLOCKS,
g_param_spec_uint ("discrete_blocks",
_("Discrete Blocks"),
_("The number of discrete blocks in a progress bar (when shown in the discrete style"),
2,
G_MAXUINT,
10,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_FRACTION,
g_param_spec_double ("fraction",
_("Fraction"),
_("The fraction of total work that has been completed"),
0.0,
1.0,
0.0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PULSE_STEP,
g_param_spec_double ("pulse_step",
_("Pulse Step"),
_("The fraction of total progress to move the bouncing block when pulsed"),
0.0,
1.0,
0.1,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_TEXT,
g_param_spec_string ("text",
_("Text"),
_("Text to be displayed in the progress bar"),
"%P %%",
G_PARAM_READWRITE));
}
static void
gtk_progress_bar_init (GtkProgressBar *pbar)
{
pbar->bar_style = GTK_PROGRESS_CONTINUOUS;
pbar->blocks = 10;
pbar->in_block = -1;
pbar->orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
pbar->pulse_fraction = 0.1;
pbar->activity_pos = 0;
pbar->activity_dir = 1;
pbar->activity_step = 3;
pbar->activity_blocks = 5;
}
static void
gtk_progress_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkProgressBar *pbar;
pbar = GTK_PROGRESS_BAR (object);
switch (prop_id)
{
case PROP_ADJUSTMENT:
gtk_progress_set_adjustment (GTK_PROGRESS (pbar),
GTK_ADJUSTMENT (g_value_get_object (value)));
break;
case PROP_ORIENTATION:
gtk_progress_bar_set_orientation (pbar, g_value_get_enum (value));
break;
case PROP_BAR_STYLE:
gtk_progress_bar_set_bar_style (pbar, g_value_get_enum (value));
break;
case PROP_ACTIVITY_STEP:
gtk_progress_bar_set_activity_step (pbar, g_value_get_uint (value));
break;
case PROP_ACTIVITY_BLOCKS:
gtk_progress_bar_set_activity_blocks (pbar, g_value_get_uint (value));
break;
case PROP_DISCRETE_BLOCKS:
gtk_progress_bar_set_discrete_blocks (pbar, g_value_get_uint (value));
break;
case PROP_FRACTION:
gtk_progress_bar_set_fraction (pbar, g_value_get_double (value));
break;
case PROP_PULSE_STEP:
gtk_progress_bar_set_pulse_step (pbar, g_value_get_double (value));
break;
case PROP_TEXT:
gtk_progress_bar_set_text (pbar, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_progress_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkProgressBar *pbar;
pbar = GTK_PROGRESS_BAR (object);
switch (prop_id)
{
case PROP_ADJUSTMENT:
g_value_set_object (value, G_OBJECT (GTK_PROGRESS (pbar)->adjustment));
break;
case PROP_ORIENTATION:
g_value_set_enum (value, pbar->orientation);
break;
case PROP_BAR_STYLE:
g_value_set_enum (value, pbar->bar_style);
break;
case PROP_ACTIVITY_STEP:
g_value_set_uint (value, pbar->activity_step);
break;
case PROP_ACTIVITY_BLOCKS:
g_value_set_uint (value, pbar->activity_blocks);
break;
case PROP_DISCRETE_BLOCKS:
g_value_set_uint (value, pbar->blocks);
break;
case PROP_FRACTION:
g_value_set_double (value, gtk_progress_get_current_percentage (GTK_PROGRESS (pbar)));
break;
case PROP_PULSE_STEP:
g_value_set_double (value, pbar->pulse_fraction);
break;
case PROP_TEXT:
g_value_set_string (value, gtk_progress_bar_get_text (pbar));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
GtkWidget*
gtk_progress_bar_new (void)
{
GtkWidget *pbar;
pbar = gtk_widget_new (GTK_TYPE_PROGRESS_BAR, NULL);
return pbar;
}
GtkWidget*
gtk_progress_bar_new_with_adjustment (GtkAdjustment *adjustment)
{
GtkWidget *pbar;
g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL);
pbar = gtk_widget_new (GTK_TYPE_PROGRESS_BAR,
"adjustment", adjustment,
NULL);
return pbar;
}
static void
gtk_progress_bar_real_update (GtkProgress *progress)
{
GtkProgressBar *pbar;
GtkWidget *widget;
g_return_if_fail (GTK_IS_PROGRESS (progress));
pbar = GTK_PROGRESS_BAR (progress);
widget = GTK_WIDGET (progress);
if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS ||
GTK_PROGRESS (pbar)->activity_mode)
{
if (GTK_PROGRESS (pbar)->activity_mode)
{
guint size;
/* advance the block */
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
{
/* Update our activity step. */
pbar->activity_step = widget->allocation.width * pbar->pulse_fraction;
size = MAX (2, widget->allocation.width / pbar->activity_blocks);
if (pbar->activity_dir == 0)
{
pbar->activity_pos += pbar->activity_step;
if (pbar->activity_pos + size >=
widget->allocation.width -
widget->style->xthickness)
{
pbar->activity_pos = widget->allocation.width -
widget->style->xthickness - size;
pbar->activity_dir = 1;
}
}
else
{
pbar->activity_pos -= pbar->activity_step;
if (pbar->activity_pos <= widget->style->xthickness)
{
pbar->activity_pos = widget->style->xthickness;
pbar->activity_dir = 0;
}
}
}
else
{
/* Update our activity step. */
pbar->activity_step = widget->allocation.height * pbar->pulse_fraction;
size = MAX (2, widget->allocation.height / pbar->activity_blocks);
if (pbar->activity_dir == 0)
{
pbar->activity_pos += pbar->activity_step;
if (pbar->activity_pos + size >=
widget->allocation.height -
widget->style->ythickness)
{
pbar->activity_pos = widget->allocation.height -
widget->style->ythickness - size;
pbar->activity_dir = 1;
}
}
else
{
pbar->activity_pos -= pbar->activity_step;
if (pbar->activity_pos <= widget->style->ythickness)
{
pbar->activity_pos = widget->style->ythickness;
pbar->activity_dir = 0;
}
}
}
}
gtk_progress_bar_paint (progress);
gtk_widget_queue_draw (GTK_WIDGET (progress));
}
else
{
gint in_block;
in_block = -1 + (gint)(gtk_progress_get_current_percentage (progress) *
(gdouble)pbar->blocks);
if (pbar->in_block != in_block)
{
pbar->in_block = in_block;
gtk_progress_bar_paint (progress);
gtk_widget_queue_draw (GTK_WIDGET (progress));
}
}
}
static void
gtk_progress_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkProgress *progress;
GtkProgressBar *pbar;
gchar *buf;
PangoRectangle logical_rect;
PangoLayout *layout;
g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
g_return_if_fail (requisition != NULL);
progress = GTK_PROGRESS (widget);
pbar = GTK_PROGRESS_BAR (widget);
if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
{
buf = gtk_progress_get_text_from_value (progress, progress->adjustment->upper);
layout = gtk_widget_create_pango_layout (widget, buf);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
g_object_unref (G_OBJECT (layout));
g_free (buf);
}
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
{
if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
{
requisition->width = MAX (MIN_HORIZONTAL_BAR_WIDTH,
2 * widget->style->xthickness + 3 +
logical_rect.width + 2 * TEXT_SPACING);
requisition->height = MAX (MIN_HORIZONTAL_BAR_HEIGHT,
2 * widget->style->ythickness + 3 +
logical_rect.height + 2 * TEXT_SPACING);
}
else
{
requisition->width = MIN_HORIZONTAL_BAR_WIDTH;
requisition->height = MIN_HORIZONTAL_BAR_HEIGHT;
}
}
else
{
if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
{
requisition->width = MAX (MIN_VERTICAL_BAR_WIDTH,
2 * widget->style->xthickness + 3 +
logical_rect.width + 2 * TEXT_SPACING);
requisition->height = MAX (MIN_VERTICAL_BAR_HEIGHT,
2 * widget->style->ythickness + 3 +
logical_rect.height + 2 * TEXT_SPACING);
}
else
{
requisition->width = MIN_VERTICAL_BAR_WIDTH;
requisition->height = MIN_VERTICAL_BAR_HEIGHT;
}
}
}
static void
gtk_progress_bar_act_mode_enter (GtkProgress *progress)
{
GtkProgressBar *pbar;
GtkWidget *widget;
gint size;
pbar = GTK_PROGRESS_BAR (progress);
widget = GTK_WIDGET (progress);
/* calculate start pos */
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
{
size = MAX (2, widget->allocation.width / pbar->activity_blocks);
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
{
pbar->activity_pos = widget->style->xthickness;
pbar->activity_dir = 0;
}
else
{
pbar->activity_pos = widget->allocation.width -
widget->style->xthickness - (widget->allocation.height -
widget->style->ythickness * 2);
pbar->activity_dir = 1;
}
}
else
{
size = MAX (2, widget->allocation.height / pbar->activity_blocks);
if (pbar->orientation == GTK_PROGRESS_TOP_TO_BOTTOM)
{
pbar->activity_pos = widget->style->ythickness;
pbar->activity_dir = 0;
}
else
{
pbar->activity_pos = widget->allocation.height -
widget->style->ythickness - (widget->allocation.width -
widget->style->xthickness * 2);
pbar->activity_dir = 1;
}
}
}
static void
gtk_progress_bar_paint (GtkProgress *progress)
{
GtkProgressBar *pbar;
GtkWidget *widget;
gint amount;
gint block_delta = 0;
gint space = 0;
gint i;
gint x;
gint y;
gdouble percentage;
gint size;
g_return_if_fail (GTK_IS_PROGRESS_BAR (progress));
pbar = GTK_PROGRESS_BAR (progress);
widget = GTK_WIDGET (progress);
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
space = widget->allocation.width -
2 * widget->style->xthickness;
else
space = widget->allocation.height -
2 * widget->style->ythickness;
percentage = gtk_progress_get_current_percentage (progress);
if (progress->offscreen_pixmap)
{
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_NORMAL, GTK_SHADOW_IN,
NULL, widget, "trough",
0, 0,
widget->allocation.width,
widget->allocation.height);
if (progress->activity_mode)
{
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
{
size = MAX (2, widget->allocation.width / pbar->activity_blocks);
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
pbar->activity_pos,
widget->style->ythickness,
size,
widget->allocation.height - widget->style->ythickness * 2);
return;
}
else
{
size = MAX (2, widget->allocation.height / pbar->activity_blocks);
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
widget->style->xthickness,
pbar->activity_pos,
widget->allocation.width - widget->style->xthickness * 2,
size);
return;
}
}
amount = percentage * space;
if (amount > 0)
{
switch (pbar->orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
{
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
widget->style->xthickness,
widget->style->ythickness,
amount,
widget->allocation.height - widget->style->ythickness * 2);
}
else
{
x = widget->style->xthickness;
for (i = 0; i <= pbar->in_block; i++)
{
block_delta = (((i + 1) * space) / pbar->blocks)
- ((i * space) / pbar->blocks);
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
x,
widget->style->ythickness,
block_delta,
widget->allocation.height - widget->style->ythickness * 2);
x += block_delta;
}
}
break;
case GTK_PROGRESS_RIGHT_TO_LEFT:
if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
{
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
widget->allocation.width -
widget->style->xthickness - amount,
widget->style->ythickness,
amount,
widget->allocation.height -
widget->style->ythickness * 2);
}
else
{
x = widget->allocation.width -
widget->style->xthickness;
for (i = 0; i <= pbar->in_block; i++)
{
block_delta = (((i + 1) * space) / pbar->blocks) -
((i * space) / pbar->blocks);
x -= block_delta;
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
x,
widget->style->ythickness,
block_delta,
widget->allocation.height -
widget->style->ythickness * 2);
}
}
break;
case GTK_PROGRESS_BOTTOM_TO_TOP:
if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
{
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
widget->style->xthickness,
widget->allocation.height -
widget->style->ythickness - amount,
widget->allocation.width -
widget->style->xthickness * 2,
amount);
}
else
{
y = widget->allocation.height -
widget->style->ythickness;
for (i = 0; i <= pbar->in_block; i++)
{
block_delta = (((i + 1) * space) / pbar->blocks) -
((i * space) / pbar->blocks);
y -= block_delta;
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
widget->style->xthickness,
y,
widget->allocation.width -
widget->style->xthickness * 2,
block_delta);
}
}
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
{
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
widget->style->xthickness,
widget->style->ythickness,
widget->allocation.width -
widget->style->xthickness * 2,
amount);
}
else
{
y = widget->style->ythickness;
for (i = 0; i <= pbar->in_block; i++)
{
block_delta = (((i + 1) * space) / pbar->blocks)
- ((i * space) / pbar->blocks);
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
widget->style->xthickness,
y,
widget->allocation.width -
widget->style->xthickness * 2,
block_delta);
y += block_delta;
}
}
break;
default:
break;
}
}
if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
{
gint x;
gint y;
gchar *buf;
GdkRectangle rect;
PangoLayout *layout;
PangoRectangle logical_rect;
buf = gtk_progress_get_current_text (progress);
layout = gtk_widget_create_pango_layout (widget, buf);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
x = widget->style->xthickness + 1 +
(widget->allocation.width - 2 * widget->style->xthickness -
3 - logical_rect.width)
* progress->x_align;
y = widget->style->ythickness + 1 +
(widget->allocation.height - 2 * widget->style->ythickness -
3 - logical_rect.height)
* progress->y_align;
rect.x = widget->style->xthickness + 1;
rect.y = widget->style->ythickness + 1;
rect.width = widget->allocation.width -
2 * widget->style->xthickness - 3;
rect.height = widget->allocation.height -
2 * widget->style->ythickness - 3;
gtk_paint_layout (widget->style,
progress->offscreen_pixmap,
GTK_WIDGET_STATE (widget),
FALSE,
&rect,
widget,
"progressbar",
x, y,
layout);
g_object_unref (G_OBJECT (layout));
g_free (buf);
}
}
}
/*******************************************************************/
/**
* gtk_progress_bar_set_fraction:
* @pbar: a #GtkProgressBar
* @fraction: fraction of the task that's been completed
*
* Causes the progress bar to "fill in" the given fraction
* of the bar. The fraction should be between 0.0 and 1.0,
* inclusive.
*
**/
void
gtk_progress_bar_set_fraction (GtkProgressBar *pbar,
gdouble fraction)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
/* If we know the percentage, we don't want activity mode. */
gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), FALSE);
/* We use the deprecated GtkProgress interface internally.
* Once everything's been deprecated for a good long time,
* we can clean up all this code.
*/
gtk_progress_set_percentage (GTK_PROGRESS (pbar), fraction);
g_object_notify (G_OBJECT (pbar), "fraction");
}
/**
* gtk_progress_bar_pulse:
* @pbar: a #GtkProgressBar
*
* Indicates that some progress is made, but you don't know how much.
* Causes the progress bar to enter "activity mode," where a block
* bounces back and forth. Each call to gtk_progress_bar_pulse()
* causes the block to move by a little bit (the amount of movement
* per pulse is determined by gtk_progress_bar_set_pulse_step()).
**/
void
gtk_progress_bar_pulse (GtkProgressBar *pbar)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
/* If we don't know the percentage, we must want activity mode. */
gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), TRUE);
/* Sigh. */
gtk_progress_bar_real_update (GTK_PROGRESS (pbar));
}
/**
* gtk_progress_bar_set_text:
* @pbar: a #GtkProgressBar
* @text: a UTF-8 string
*
* Causes the given @text to appear superimposed on the progress bar.
**/
void
gtk_progress_bar_set_text (GtkProgressBar *pbar,
const gchar *text)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
/* We don't support formats in this interface */
GTK_PROGRESS (pbar)->use_text_format = FALSE;
if (text && *text)
{
gtk_progress_set_show_text (GTK_PROGRESS (pbar), TRUE);
gtk_progress_set_format_string (GTK_PROGRESS (pbar), text);
}
else
{
gtk_progress_set_show_text (GTK_PROGRESS (pbar), FALSE);
gtk_progress_set_format_string (GTK_PROGRESS (pbar), "");
}
g_object_notify (G_OBJECT (pbar), "text");
}
/**
* gtk_progress_bar_set_pulse_step:
* @pbar: a #GtkProgressBar
* @fraction: fraction between 0.0 and 1.0
*
* Sets the fraction of total progress bar length to move the
* bouncing block for each call to gtk_progress_bar_pulse().
**/
void
gtk_progress_bar_set_pulse_step (GtkProgressBar *pbar,
gdouble fraction)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
pbar->pulse_fraction = fraction;
g_object_notify (G_OBJECT (pbar), "pulse_step");
}
void
gtk_progress_bar_update (GtkProgressBar *pbar,
gdouble percentage)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
/* Use of gtk_progress_bar_update() is deprecated !
* Use gtk_progress_bar_set_percentage ()
*/
gtk_progress_set_percentage (GTK_PROGRESS (pbar), percentage);
}
/**
* gtk_progress_bar_set_orientation:
* @pbar: a #GtkProgressBar
* @orientation: orientation of the progress bar
*
* Causes the progress bar to switch to a different orientation
* (left-to-right, right-to-left, top-to-bottom, or bottom-to-top).
**/
void
gtk_progress_bar_set_orientation (GtkProgressBar *pbar,
GtkProgressBarOrientation orientation)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
if (pbar->orientation != orientation)
{
pbar->orientation = orientation;
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify (G_OBJECT (pbar), "orientation");
}
}
/**
* gtk_progress_bar_get_text:
* @pbar: a #GtkProgressBar
*
* Retrieves the text displayed superimposed on the progress bar,
* if any, otherwise %NULL. The return value is a reference
* to the text, not a copy of it, so will become invalid
* if you change the text in the progress bar.
*
* Return value: text, or %NULL; don't free the string
**/
G_CONST_RETURN gchar*
gtk_progress_bar_get_text (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL);
if (GTK_PROGRESS (pbar)->use_text_format)
return NULL;
else
return GTK_PROGRESS (pbar)->format;
}
/**
* gtk_progress_bar_get_fraction:
* @pbar: a #GtkProgressBar
*
* Returns the current fraction of the task that's been completed.
*
* Return value: a fraction from 0.0 to 1.0
**/
gdouble
gtk_progress_bar_get_fraction (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
return gtk_progress_get_current_percentage (GTK_PROGRESS (pbar));
}
/**
* gtk_progress_bar_get_pulse_step:
* @pbar: a #GtkProgressBar
*
* Retrieves the pulse step set with gtk_progress_bar_set_pulse_step()
*
* Return value: a fraction from 0.0 to 1.0
**/
gdouble
gtk_progress_bar_get_pulse_step (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
return pbar->pulse_fraction;
}
/**
* gtk_progress_bar_get_orientation:
* @pbar: a #GtkProgressBar
*
* Retrieves the current progress bar orientation.
*
* Return value: orientation of the progress bar
**/
GtkProgressBarOrientation
gtk_progress_bar_get_orientation (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
return pbar->orientation;
}
void
gtk_progress_bar_set_bar_style (GtkProgressBar *pbar,
GtkProgressBarStyle bar_style)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
if (pbar->bar_style != bar_style)
{
pbar->bar_style = bar_style;
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify (G_OBJECT (pbar), "bar_style");
}
}
void
gtk_progress_bar_set_discrete_blocks (GtkProgressBar *pbar,
guint blocks)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
g_return_if_fail (blocks > 1);
if (pbar->blocks != blocks)
{
pbar->blocks = blocks;
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify (G_OBJECT (pbar), "discrete_blocks");
}
}
void
gtk_progress_bar_set_activity_step (GtkProgressBar *pbar,
guint step)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
if (pbar->activity_step != step)
{
pbar->activity_step = step;
g_object_notify (G_OBJECT (pbar), "activity_step");
}
}
void
gtk_progress_bar_set_activity_blocks (GtkProgressBar *pbar,
guint blocks)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
g_return_if_fail (blocks > 1);
if (pbar->activity_blocks != blocks)
{
pbar->activity_blocks = blocks;
g_object_notify (G_OBJECT (pbar), "activity_blocks");
}
}
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