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gtk2/gtk/gtkprogressbar.c
Anders Carlsson b1167d1d11 Don't pass NULL to pango_context_get_metrics. Use 
2005-01-09  Anders Carlsson <andersca@gnome.org>

	* gtk/gtkcellrenderertext.c: (get_size):
	* gtk/gtklabel.c: (gtk_label_size_request):
	* gtk/gtkprogressbar.c: (gtk_progress_bar_size_request):
	Don't pass NULL to pango_context_get_metrics. Use
	pango_context_get_language instead, which is way faster.
2005-01-09 17:32:25 +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 "gtkalias.h"
#include "gtkprogressbar.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,
PROP_ELLIPSIZE,
/* 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);
static void gtk_progress_bar_set_bar_style_internal (GtkProgressBar *pbar,
GtkProgressBarStyle style);
static void gtk_progress_bar_set_discrete_blocks_internal (GtkProgressBar *pbar,
guint blocks);
static void gtk_progress_bar_set_activity_step_internal (GtkProgressBar *pbar,
guint step);
static void gtk_progress_bar_set_activity_blocks_internal (GtkProgressBar *pbar,
guint blocks);
GType
gtk_progress_bar_get_type (void)
{
static GType progress_bar_type = 0;
if (!progress_bar_type)
{
static const GTypeInfo progress_bar_info =
{
sizeof (GtkProgressBarClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_progress_bar_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkProgressBar),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_progress_bar_init,
};
progress_bar_type =
g_type_register_static (GTK_TYPE_PROGRESS, "GtkProgressBar",
&progress_bar_info, 0);
}
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",
P_("Adjustment"),
P_("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",
P_("Orientation"),
P_("Orientation and growth direction 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",
P_("Bar style"),
P_("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",
P_("Activity Step"),
P_("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",
P_("Activity Blocks"),
P_("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",
P_("Discrete Blocks"),
P_("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",
P_("Fraction"),
P_("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",
P_("Pulse Step"),
P_("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",
P_("Text"),
P_("Text to be displayed in the progress bar"),
"%P %%",
G_PARAM_READWRITE));
/**
* GtkProgressBar:ellipsize:
*
* The preferred place to ellipsize the string, if the progressbar does
* not have enough room to display the entire string, specified as a
* #PangoEllisizeMode.
*
* Note that setting this property to a value other than
* %PANGO_ELLIPSIZE_NONE has the side-effect that the progressbar requests
* only enough space to display the ellipsis "...". Another means to set a
* progressbar's width is gtk_widget_set_size_request().
*
* Since: 2.6
*/
g_object_class_install_property (gobject_class,
PROP_ELLIPSIZE,
g_param_spec_enum ("ellipsize",
P_("Ellipsize"),
P_("The preferred place to ellipsize the string, if the progressbar does not have enough room to display the entire string, if at all"),
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
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;
pbar->ellipsize = PANGO_ELLIPSIZE_NONE;
}
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_internal (pbar, g_value_get_enum (value));
break;
case PROP_ACTIVITY_STEP:
gtk_progress_bar_set_activity_step_internal (pbar, g_value_get_uint (value));
break;
case PROP_ACTIVITY_BLOCKS:
gtk_progress_bar_set_activity_blocks_internal (pbar, g_value_get_uint (value));
break;
case PROP_DISCRETE_BLOCKS:
gtk_progress_bar_set_discrete_blocks_internal (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;
case PROP_ELLIPSIZE:
gtk_progress_bar_set_ellipsize (pbar, g_value_get_enum (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, 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;
case PROP_ELLIPSIZE:
g_value_set_enum (value, pbar->ellipsize);
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;
gint width, height;
g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
g_return_if_fail (requisition != NULL);
progress = GTK_PROGRESS (widget);
pbar = GTK_PROGRESS_BAR (widget);
width = 2 * widget->style->xthickness + 3 + 2 * TEXT_SPACING;
height = 2 * widget->style->ythickness + 3 + 2 * TEXT_SPACING;
if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
{
if (!progress->adjustment)
gtk_progress_set_adjustment (progress, NULL);
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);
if (pbar->ellipsize)
{
PangoContext *context;
PangoFontMetrics *metrics;
gint char_width;
/* The minimum size for ellipsized text is ~ 3 chars */
context = pango_layout_get_context (layout);
metrics = pango_context_get_metrics (context, widget->style->font_desc, pango_context_get_language (context));
char_width = pango_font_metrics_get_approximate_char_width (metrics);
pango_font_metrics_unref (metrics);
width += PANGO_PIXELS (char_width) * 3;
}
else
width += logical_rect.width;
height += logical_rect.height;
g_object_unref (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, width);
requisition->height = MAX (MIN_HORIZONTAL_BAR_HEIGHT, height);
}
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, width);
requisition->height = MAX (MIN_VERTICAL_BAR_HEIGHT, height);
}
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;
GtkProgressBarOrientation orientation;
pbar = GTK_PROGRESS_BAR (progress);
widget = GTK_WIDGET (progress);
orientation = pbar->orientation;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
else if (pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
}
/* calculate start pos */
if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
{
size = MAX (2, widget->allocation.width / pbar->activity_blocks);
if (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 (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_activity (GtkProgressBar *pbar,
GtkProgressBarOrientation orientation)
{
GtkWidget *widget = GTK_WIDGET (pbar);
GtkProgress *progress = GTK_PROGRESS (pbar);
gint x, y, w, h;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
case GTK_PROGRESS_RIGHT_TO_LEFT:
x = pbar->activity_pos;
y = widget->style->ythickness;
w = MAX (2, widget->allocation.width / pbar->activity_blocks);
h = widget->allocation.height - 2 * widget->style->ythickness;
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
case GTK_PROGRESS_BOTTOM_TO_TOP:
x = widget->style->xthickness;
y = pbar->activity_pos;
w = widget->allocation.width - 2 * widget->style->xthickness;
h = MAX (2, widget->allocation.height / pbar->activity_blocks);
break;
default:
return;
break;
}
gtk_paint_box (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
x, y, w, h);
}
static void
gtk_progress_bar_paint_continuous (GtkProgressBar *pbar,
gint amount,
GtkProgressBarOrientation orientation)
{
GtkWidget *widget = GTK_WIDGET (pbar);
gint x, y, w, h;
if (amount <= 0)
return;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
case GTK_PROGRESS_RIGHT_TO_LEFT:
w = amount;
h = widget->allocation.height - widget->style->ythickness * 2;
y = widget->style->ythickness;
x = widget->style->xthickness;
if (orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
x = widget->allocation.width - amount - x;
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
case GTK_PROGRESS_BOTTOM_TO_TOP:
w = widget->allocation.width - widget->style->xthickness * 2;
h = amount;
x = widget->style->xthickness;
y = widget->style->ythickness;
if (orientation == GTK_PROGRESS_BOTTOM_TO_TOP)
y = widget->allocation.height - amount - y;
break;
default:
return;
break;
}
gtk_paint_box (widget->style,
GTK_PROGRESS (pbar)->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
x, y, w, h);
}
static void
gtk_progress_bar_paint_discrete (GtkProgressBar *pbar,
GtkProgressBarOrientation orientation)
{
GtkWidget *widget = GTK_WIDGET (pbar);
gint i;
for (i = 0; i <= pbar->in_block; i++)
{
gint x, y, w, h, space;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
case GTK_PROGRESS_RIGHT_TO_LEFT:
space = widget->allocation.width - 2 * widget->style->xthickness;
x = widget->style->xthickness + (i * space) / pbar->blocks;
y = widget->style->ythickness;
w = widget->style->xthickness + ((i + 1) * space) / pbar->blocks - x;
h = widget->allocation.height - 2 * widget->style->ythickness;
if (orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
x = widget->allocation.width - w - x;
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
case GTK_PROGRESS_BOTTOM_TO_TOP:
space = widget->allocation.height - 2 * widget->style->ythickness;
x = widget->style->xthickness;
y = widget->style->ythickness + (i * space) / pbar->blocks;
w = widget->allocation.width - 2 * widget->style->xthickness;
h = widget->style->ythickness + ((i + 1) * space) / pbar->blocks - y;
if (orientation == GTK_PROGRESS_BOTTOM_TO_TOP)
y = widget->allocation.height - h - y;
break;
default:
return;
break;
}
gtk_paint_box (widget->style,
GTK_PROGRESS (pbar)->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
NULL, widget, "bar",
x, y, w, h);
}
}
static void
gtk_progress_bar_paint_text (GtkProgressBar *pbar,
gint amount,
GtkProgressBarOrientation orientation)
{
GtkProgress *progress = GTK_PROGRESS (pbar);
GtkWidget *widget = GTK_WIDGET (pbar);
gint x;
gint y;
gchar *buf;
GdkRectangle rect;
PangoLayout *layout;
PangoRectangle logical_rect;
GdkRectangle prelight_clip, normal_clip;
buf = gtk_progress_get_current_text (progress);
layout = gtk_widget_create_pango_layout (widget, buf);
pango_layout_set_ellipsize (layout, pbar->ellipsize);
if (pbar->ellipsize)
pango_layout_set_width (layout, widget->allocation.width * PANGO_SCALE);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
x = widget->style->xthickness + 1 +
(widget->allocation.width - 2 * widget->style->xthickness -
2 - logical_rect.width)
* progress->x_align;
y = widget->style->ythickness + 1 +
(widget->allocation.height - 2 * widget->style->ythickness -
2 - logical_rect.height)
* progress->y_align;
rect.x = widget->style->xthickness;
rect.y = widget->style->ythickness;
rect.width = widget->allocation.width - 2 * widget->style->xthickness;
rect.height = widget->allocation.height - 2 * widget->style->ythickness;
prelight_clip = normal_clip = rect;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
prelight_clip.width = amount;
normal_clip.x += amount;
normal_clip.width -= amount;
break;
case GTK_PROGRESS_RIGHT_TO_LEFT:
normal_clip.width -= amount;
prelight_clip.x += normal_clip.width;
prelight_clip.width -= normal_clip.width;
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
prelight_clip.height = amount;
normal_clip.y += amount;
normal_clip.height -= amount;
break;
case GTK_PROGRESS_BOTTOM_TO_TOP:
normal_clip.height -= amount;
prelight_clip.y += normal_clip.height;
prelight_clip.height -= normal_clip.height;
break;
}
gtk_paint_layout (widget->style,
progress->offscreen_pixmap,
GTK_STATE_PRELIGHT,
FALSE,
&prelight_clip,
widget,
"progressbar",
x, y,
layout);
gtk_paint_layout (widget->style,
progress->offscreen_pixmap,
GTK_STATE_NORMAL,
FALSE,
&normal_clip,
widget,
"progressbar",
x, y,
layout);
g_object_unref (layout);
g_free (buf);
}
static void
gtk_progress_bar_paint (GtkProgress *progress)
{
GtkProgressBar *pbar;
GtkWidget *widget;
GtkProgressBarOrientation orientation;
g_return_if_fail (GTK_IS_PROGRESS_BAR (progress));
pbar = GTK_PROGRESS_BAR (progress);
widget = GTK_WIDGET (progress);
orientation = pbar->orientation;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
else if (pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
}
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)
{
gtk_progress_bar_paint_activity (pbar, orientation);
}
else
{
gint amount;
gint space;
if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
space = widget->allocation.width - 2 * widget->style->xthickness;
else
space = widget->allocation.height - 2 * widget->style->ythickness;
amount = space *
gtk_progress_get_current_percentage (GTK_PROGRESS (pbar));
if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
{
gtk_progress_bar_paint_continuous (pbar, amount, orientation);
if (GTK_PROGRESS (pbar)->show_text)
gtk_progress_bar_paint_text (pbar, amount, orientation);
}
else
gtk_progress_bar_paint_discrete (pbar, orientation);
}
}
}
static void
gtk_progress_bar_set_bar_style_internal (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");
}
}
static void
gtk_progress_bar_set_discrete_blocks_internal (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");
}
}
static void
gtk_progress_bar_set_activity_step_internal (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");
}
}
static void
gtk_progress_bar_set_activity_blocks_internal (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");
}
}
/*******************************************************************/
/**
* 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));
gtk_progress_set_show_text (GTK_PROGRESS (pbar), text && *text);
gtk_progress_set_format_string (GTK_PROGRESS (pbar), text);
/* We don't support formats in this interface, but turn
* them back on for NULL, which should put us back to
* the initial state.
*/
GTK_PROGRESS (pbar)->use_text_format = (text == NULL);
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; this string is owned by the widget
* and should not be modified or freed.
**/
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));
gtk_progress_bar_set_bar_style_internal (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);
gtk_progress_bar_set_discrete_blocks_internal (pbar, blocks);
}
void
gtk_progress_bar_set_activity_step (GtkProgressBar *pbar,
guint step)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
gtk_progress_bar_set_activity_step_internal (pbar, 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);
gtk_progress_bar_set_activity_blocks_internal (pbar, blocks);
}
/**
* gtk_progress_bar_set_ellipsize:
* @pbar: a #GtkProgressBar
* @mode: a #PangoEllipsizeMode
*
* Sets the mode used to ellipsize (add an ellipsis: "...") the text
* if there is not enough space to render the entire string.
*
* Since: 2.6
**/
void
gtk_progress_bar_set_ellipsize (GtkProgressBar *pbar,
PangoEllipsizeMode mode)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE &&
mode <= PANGO_ELLIPSIZE_END);
if ((PangoEllipsizeMode)pbar->ellipsize != mode)
{
pbar->ellipsize = mode;
g_object_notify (G_OBJECT (pbar), "ellipsize");
gtk_widget_queue_resize (GTK_WIDGET (pbar));
}
}
/**
* gtk_pgrogress_bar_get_ellipsize:
* @pbar: a #GtkProgressBar
*
* Returns the ellipsizing position of the progressbar.
* See gtk_progress_bar_set_ellipsize().
*
* Return value: #PangoEllipsizeMode
*
* Since: 2.6
**/
PangoEllipsizeMode
gtk_progress_bar_get_ellipsize (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), PANGO_ELLIPSIZE_NONE);
return pbar->ellipsize;
}
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