AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
054165d406
gtk2/gtk/gtkprogressbar.c
Benjamin Otte e7bb83988f progressbar: Never stop never stopping 
Reinstate code that was accidentally deleted during the port to
GtkProgressTracker in commit d57ebe2de7.

Without that code, pulsing the progressbar will stop doing anything
after 3 iterations.
2018-06-26 04:14:25 +02:00

1823 lines
61 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* 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, see <http://www.gnu.org/licenses/>.
*/
/*
* 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 <string.h>
#include "gtkprogressbar.h"
#include "gtkorientableprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkcssshadowsvalueprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkcsscustomgadgetprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkprogresstrackerprivate.h"
#include "a11y/gtkprogressbaraccessible.h"
#include "fallback-c89.c"
/**
* SECTION:gtkprogressbar
* @Short_description: A widget which indicates progress visually
* @Title: GtkProgressBar
*
* The #GtkProgressBar is typically used to display the progress of a long
* running operation. It provides a visual clue that processing is underway.
* The GtkProgressBar can be used in two different modes: percentage mode
* and activity mode.
*
* When an application can determine how much work needs to take place
* (e.g. read a fixed number of bytes from a file) and can monitor its
* progress, it can use the GtkProgressBar in percentage mode and the
* user sees a growing bar indicating the percentage of the work that
* has been completed. In this mode, the application is required to call
* gtk_progress_bar_set_fraction() periodically to update the progress bar.
*
* When an application has no accurate way of knowing the amount of work
* to do, it can use the #GtkProgressBar in activity mode, which shows
* activity by a block moving back and forth within the progress area. In
* this mode, the application is required to call gtk_progress_bar_pulse()
* periodically to update the progress bar.
*
* There is quite a bit of flexibility provided to control the appearance
* of the #GtkProgressBar. Functions are provided to control the orientation
* of the bar, optional text can be displayed along with the bar, and the
* step size used in activity mode can be set.
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* progressbar[.osd]
* ├── [text]
* ╰── trough[.empty][.full]
* ╰── progress[.pulse]
* ]|
*
* GtkProgressBar has a main CSS node with name progressbar and subnodes with
* names text and trough, of which the latter has a subnode named progress. The
* text subnode is only present if text is shown. The progress subnode has the
* style class .pulse when in activity mode. It gets the style classes .left,
* .right, .top or .bottom added when the progress 'touches' the corresponding
* end of the GtkProgressBar. The .osd class on the progressbar node is for use
* in overlays like the one Epiphany has for page loading progress.
*/
#define MIN_HORIZONTAL_BAR_WIDTH 150
#define MIN_HORIZONTAL_BAR_HEIGHT 6
#define MIN_VERTICAL_BAR_WIDTH 7
#define MIN_VERTICAL_BAR_HEIGHT 80
#define DEFAULT_PULSE_DURATION 250000000
struct _GtkProgressBarPrivate
{
gchar *text;
GtkCssGadget *gadget;
GtkCssGadget *text_gadget;
GtkCssGadget *trough_gadget;
GtkCssGadget *progress_gadget;
gdouble fraction;
gdouble pulse_fraction;
double activity_pos;
guint activity_blocks;
GtkOrientation orientation;
guint tick_id;
GtkProgressTracker tracker;
gint64 pulse1;
gint64 pulse2;
gdouble last_iteration;
guint activity_dir : 1;
guint activity_mode : 1;
guint ellipsize : 3;
guint show_text : 1;
guint inverted : 1;
};
enum {
PROP_0,
PROP_FRACTION,
PROP_PULSE_STEP,
PROP_INVERTED,
PROP_TEXT,
PROP_SHOW_TEXT,
PROP_ELLIPSIZE,
PROP_ORIENTATION,
NUM_PROPERTIES = PROP_ORIENTATION
};
static GParamSpec *progress_props[NUM_PROPERTIES] = { NULL, };
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_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_progress_bar_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_progress_bar_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
static gboolean gtk_progress_bar_draw (GtkWidget *widget,
cairo_t *cr);
static void gtk_progress_bar_act_mode_enter (GtkProgressBar *progress);
static void gtk_progress_bar_act_mode_leave (GtkProgressBar *progress);
static void gtk_progress_bar_finalize (GObject *object);
static void gtk_progress_bar_set_orientation (GtkProgressBar *progress,
GtkOrientation orientation);
static void gtk_progress_bar_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir);
static void gtk_progress_bar_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static void gtk_progress_bar_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline,
gpointer data);
static void gtk_progress_bar_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
gint baseline,
GtkAllocation *out_clip,
gpointer data);
static gboolean gtk_progress_bar_render (GtkCssGadget *gadget,
cairo_t *cr,
gint x,
gint y,
gint width,
gint height,
gpointer data);
static void gtk_progress_bar_allocate_trough (GtkCssGadget *gadget,
const GtkAllocation *allocation,
gint baseline,
GtkAllocation *out_clip,
gpointer data);
static void gtk_progress_bar_measure_trough (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline,
gpointer data);
static gboolean gtk_progress_bar_render_trough (GtkCssGadget *gadget,
cairo_t *cr,
gint x,
gint y,
gint width,
gint height,
gpointer data);
static void gtk_progress_bar_measure_progress (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline,
gpointer data);
static void gtk_progress_bar_measure_text (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline,
gpointer data);
static gboolean gtk_progress_bar_render_text (GtkCssGadget *gadget,
cairo_t *cr,
gint x,
gint y,
gint width,
gint height,
gpointer data);
G_DEFINE_TYPE_WITH_CODE (GtkProgressBar, gtk_progress_bar, GTK_TYPE_WIDGET,
G_ADD_PRIVATE (GtkProgressBar)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL))
static void
gtk_progress_bar_class_init (GtkProgressBarClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass *) class;
gobject_class->set_property = gtk_progress_bar_set_property;
gobject_class->get_property = gtk_progress_bar_get_property;
gobject_class->finalize = gtk_progress_bar_finalize;
widget_class->draw = gtk_progress_bar_draw;
widget_class->size_allocate = gtk_progress_bar_size_allocate;
widget_class->get_preferred_width = gtk_progress_bar_get_preferred_width;
widget_class->get_preferred_height = gtk_progress_bar_get_preferred_height;
widget_class->direction_changed = gtk_progress_bar_direction_changed;
widget_class->state_flags_changed = gtk_progress_bar_state_flags_changed;
g_object_class_override_property (gobject_class, PROP_ORIENTATION, "orientation");
progress_props[PROP_INVERTED] =
g_param_spec_boolean ("inverted",
P_("Inverted"),
P_("Invert the direction in which the progress bar grows"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
progress_props[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,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
progress_props[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,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
progress_props[PROP_TEXT] =
g_param_spec_string ("text",
P_("Text"),
P_("Text to be displayed in the progress bar"),
NULL,
GTK_PARAM_READWRITE);
/**
* GtkProgressBar:show-text:
*
* Sets whether the progress bar will show a text in addition
* to the bar itself. The shown text is either the value of
* the #GtkProgressBar:text property or, if that is %NULL,
* the #GtkProgressBar:fraction value, as a percentage.
*
* To make a progress bar that is styled and sized suitably for
* showing text (even if the actual text is blank), set
* #GtkProgressBar:show-text to %TRUE and #GtkProgressBar:text
* to the empty string (not %NULL).
*
* Since: 3.0
*/
progress_props[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_PARAM_EXPLICIT_NOTIFY);
/**
* GtkProgressBar:ellipsize:
*
* The preferred place to ellipsize the string, if the progress bar does
* not have enough room to display the entire string, specified as a
* #PangoEllipsizeMode.
*
* Note that setting this property to a value other than
* %PANGO_ELLIPSIZE_NONE has the side-effect that the progress bar requests
* only enough space to display the ellipsis ("..."). Another means to set a
* progress bar's width is gtk_widget_set_size_request().
*
* Since: 2.6
*/
progress_props[PROP_ELLIPSIZE] =
g_param_spec_enum ("ellipsize",
P_("Ellipsize"),
P_("The preferred place to ellipsize the string, if the progress bar "
"does not have enough room to display the entire string, if at all."),
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, NUM_PROPERTIES, progress_props);
/**
* GtkProgressBar:xspacing:
*
* Extra spacing applied to the width of a progress bar.
*
* Deprecated: 3.20: Use the standard CSS padding and margins; the
* value of this style property is ignored.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("xspacing",
P_("X spacing"),
P_("Extra spacing applied to the width of a progress bar."),
0, G_MAXINT, 2,
G_PARAM_READWRITE|G_PARAM_DEPRECATED));
/**
* GtkProgressBar:yspacing:
*
* Extra spacing applied to the height of a progress bar.
*
* Deprecated: 3.20: Use the standard CSS padding and margins; the
* value of this style property is ignored.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("yspacing",
P_("Y spacing"),
P_("Extra spacing applied to the height of a progress bar."),
0, G_MAXINT, 2,
G_PARAM_READWRITE|G_PARAM_DEPRECATED));
/**
* GtkProgressBar:min-horizontal-bar-width:
*
* The minimum horizontal width of the progress bar.
*
* Since: 2.14
*
* Deprecated: 3.20: Use the standard CSS property min-width.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-horizontal-bar-width",
P_("Minimum horizontal bar width"),
P_("The minimum horizontal width of the progress bar"),
1, G_MAXINT, MIN_HORIZONTAL_BAR_WIDTH,
G_PARAM_READWRITE|G_PARAM_DEPRECATED));
/**
* GtkProgressBar:min-horizontal-bar-height:
*
* Minimum horizontal height of the progress bar.
*
* Since: 2.14
*
* Deprecated: 3.20: Use the standard CSS property min-height.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-horizontal-bar-height",
P_("Minimum horizontal bar height"),
P_("Minimum horizontal height of the progress bar"),
1, G_MAXINT, MIN_HORIZONTAL_BAR_HEIGHT,
G_PARAM_READWRITE|G_PARAM_DEPRECATED));
/**
* GtkProgressBar:min-vertical-bar-width:
*
* The minimum vertical width of the progress bar.
*
* Since: 2.14
*
* Deprecated: 3.20: Use the standard CSS property min-width.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-vertical-bar-width",
P_("Minimum vertical bar width"),
P_("The minimum vertical width of the progress bar"),
1, G_MAXINT, MIN_VERTICAL_BAR_WIDTH,
G_PARAM_READWRITE|G_PARAM_DEPRECATED));
/**
* GtkProgressBar:min-vertical-bar-height:
*
* The minimum vertical height of the progress bar.
*
* Since: 2.14
*
* Deprecated: 3.20: Use the standard CSS property min-height.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-vertical-bar-height",
P_("Minimum vertical bar height"),
P_("The minimum vertical height of the progress bar"),
1, G_MAXINT, MIN_VERTICAL_BAR_HEIGHT,
G_PARAM_READWRITE|G_PARAM_DEPRECATED));
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_PROGRESS_BAR_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, "progressbar");
}
static void
update_fraction_classes (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv = pbar->priv;
gboolean empty = FALSE;
gboolean full = FALSE;
/* Here we set classes based on fill-level unless we're in activity-mode.
*/
if (!priv->activity_mode)
{
if (priv->fraction <= 0.0)
empty = TRUE;
else if (priv->fraction >= 1.0)
full = TRUE;
}
if (empty)
gtk_css_gadget_add_class (priv->trough_gadget, "empty");
else
gtk_css_gadget_remove_class (priv->trough_gadget, "empty");
if (full)
gtk_css_gadget_add_class (priv->trough_gadget, "full");
else
gtk_css_gadget_remove_class (priv->trough_gadget, "full");
}
static void
update_node_classes (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv = pbar->priv;
gboolean left = FALSE;
gboolean right = FALSE;
gboolean top = FALSE;
gboolean bottom = FALSE;
/* Here we set positional classes, depending on which end of the
* progressbar the progress touches.
*/
if (priv->activity_mode)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
left = priv->activity_pos <= 0.0;
right = priv->activity_pos >= 1.0;
}
else
{
top = priv->activity_pos <= 0.0;
bottom = priv->activity_pos >= 1.0;
}
}
else /* continuous */
{
gboolean inverted;
inverted = priv->inverted;
if (gtk_widget_get_direction (GTK_WIDGET (pbar)) == GTK_TEXT_DIR_RTL)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
inverted = !inverted;
}
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
left = !inverted || priv->fraction >= 1.0;
right = inverted || priv->fraction >= 1.0;
}
else
{
top = !inverted || priv->fraction >= 1.0;
bottom = inverted || priv->fraction >= 1.0;
}
}
if (left)
gtk_css_gadget_add_class (priv->progress_gadget, GTK_STYLE_CLASS_LEFT);
else
gtk_css_gadget_remove_class (priv->progress_gadget, GTK_STYLE_CLASS_LEFT);
if (right)
gtk_css_gadget_add_class (priv->progress_gadget, GTK_STYLE_CLASS_RIGHT);
else
gtk_css_gadget_remove_class (priv->progress_gadget, GTK_STYLE_CLASS_RIGHT);
if (top)
gtk_css_gadget_add_class (priv->progress_gadget, GTK_STYLE_CLASS_TOP);
else
gtk_css_gadget_remove_class (priv->progress_gadget, GTK_STYLE_CLASS_TOP);
if (bottom)
gtk_css_gadget_add_class (priv->progress_gadget, GTK_STYLE_CLASS_BOTTOM);
else
gtk_css_gadget_remove_class (priv->progress_gadget, GTK_STYLE_CLASS_BOTTOM);
update_fraction_classes (pbar);
}
static void
update_node_state (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv = pbar->priv;
GtkStateFlags state;
state = gtk_widget_get_state_flags (GTK_WIDGET (pbar));
gtk_css_gadget_set_state (priv->gadget, state);
gtk_css_gadget_set_state (priv->trough_gadget, state);
gtk_css_gadget_set_state (priv->progress_gadget, state);
if (priv->text_gadget)
gtk_css_gadget_set_state (priv->text_gadget, state);
}
static void
gtk_progress_bar_init (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv;
GtkCssNode *widget_node;
pbar->priv = gtk_progress_bar_get_instance_private (pbar);
priv = pbar->priv;
priv->orientation = GTK_ORIENTATION_HORIZONTAL;
priv->inverted = FALSE;
priv->pulse_fraction = 0.1;
priv->activity_pos = 0;
priv->activity_dir = 1;
priv->activity_blocks = 5;
priv->ellipsize = PANGO_ELLIPSIZE_NONE;
priv->show_text = FALSE;
priv->text = NULL;
priv->fraction = 0.0;
gtk_widget_set_has_window (GTK_WIDGET (pbar), FALSE);
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (pbar));
widget_node = gtk_widget_get_css_node (GTK_WIDGET (pbar));
priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
GTK_WIDGET (pbar),
gtk_progress_bar_measure,
gtk_progress_bar_allocate,
gtk_progress_bar_render,
NULL,
NULL);
priv->trough_gadget = gtk_css_custom_gadget_new ("trough",
GTK_WIDGET (pbar),
priv->gadget,
NULL,
gtk_progress_bar_measure_trough,
gtk_progress_bar_allocate_trough,
gtk_progress_bar_render_trough,
NULL,
NULL);
priv->progress_gadget = gtk_css_custom_gadget_new ("progress",
GTK_WIDGET (pbar),
priv->trough_gadget,
NULL,
gtk_progress_bar_measure_progress,
NULL,
NULL,
NULL,
NULL);
update_node_state (pbar);
update_node_classes (pbar);
}
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_ORIENTATION:
gtk_progress_bar_set_orientation (pbar, g_value_get_enum (value));
break;
case PROP_INVERTED:
gtk_progress_bar_set_inverted (pbar, g_value_get_boolean (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_SHOW_TEXT:
gtk_progress_bar_set_show_text (pbar, g_value_get_boolean (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 = GTK_PROGRESS_BAR (object);
GtkProgressBarPrivate* priv = pbar->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, priv->orientation);
break;
case PROP_INVERTED:
g_value_set_boolean (value, priv->inverted);
break;
case PROP_FRACTION:
g_value_set_double (value, priv->fraction);
break;
case PROP_PULSE_STEP:
g_value_set_double (value, priv->pulse_fraction);
break;
case PROP_TEXT:
g_value_set_string (value, priv->text);
break;
case PROP_SHOW_TEXT:
g_value_set_boolean (value, priv->show_text);
break;
case PROP_ELLIPSIZE:
g_value_set_enum (value, priv->ellipsize);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_progress_bar_new:
*
* Creates a new #GtkProgressBar.
*
* Returns: a #GtkProgressBar.
*/
GtkWidget*
gtk_progress_bar_new (void)
{
GtkWidget *pbar;
pbar = g_object_new (GTK_TYPE_PROGRESS_BAR, NULL);
return pbar;
}
static void
gtk_progress_bar_finalize (GObject *object)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (object);
GtkProgressBarPrivate *priv = pbar->priv;
if (priv->activity_mode)
gtk_progress_bar_act_mode_leave (pbar);
g_free (priv->text);
g_clear_object (&priv->text_gadget);
g_clear_object (&priv->progress_gadget);
g_clear_object (&priv->trough_gadget);
g_clear_object (&priv->gadget);
G_OBJECT_CLASS (gtk_progress_bar_parent_class)->finalize (object);
}
static gchar *
get_current_text (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv = pbar->priv;
if (priv->text)
return g_strdup (priv->text);
else
return g_strdup_printf (C_("progress bar label", "%.0f %%"), priv->fraction * 100.0);
}
static void
gtk_progress_bar_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget;
GtkProgressBar *pbar;
GtkProgressBarPrivate *priv;
gint text_minimum, text_natural;
gint trough_minimum, trough_natural;
widget = gtk_css_gadget_get_owner (gadget);
pbar = GTK_PROGRESS_BAR (widget);
priv = pbar->priv;
if (priv->show_text)
gtk_css_gadget_get_preferred_size (priv->text_gadget,
orientation,
-1,
&text_minimum, &text_natural,
NULL, NULL);
else
text_minimum = text_natural = 0;
gtk_css_gadget_get_preferred_size (priv->trough_gadget,
orientation,
-1,
&trough_minimum, &trough_natural,
NULL, NULL);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
*minimum = MAX (text_minimum, trough_minimum);
*natural = MAX (text_natural, trough_natural);
}
else
{
*minimum = text_minimum + trough_minimum;
*natural = text_natural + trough_natural;
}
}
else
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
*minimum = text_minimum + trough_minimum;
*natural = text_natural + trough_natural;
}
else
{
*minimum = MAX (text_minimum, trough_minimum);
*natural = MAX (text_natural, trough_natural);
}
}
}
static PangoLayout *
gtk_progress_bar_get_layout (GtkProgressBar *pbar)
{
PangoLayout *layout;
gchar *buf;
GtkCssStyle *style;
PangoAttrList *attrs;
PangoFontDescription *desc;
buf = get_current_text (pbar);
layout = gtk_widget_create_pango_layout (GTK_WIDGET (pbar), buf);
style = gtk_css_node_get_style (gtk_css_gadget_get_node (pbar->priv->text_gadget));
attrs = gtk_css_style_get_pango_attributes (style);
desc = gtk_css_style_get_pango_font (style);
pango_layout_set_attributes (layout, attrs);
pango_layout_set_font_description (layout, desc);
if (attrs)
pango_attr_list_unref (attrs);
pango_font_description_free (desc);
g_free (buf);
return layout;
}
static void
gtk_progress_bar_measure_text (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget;
GtkProgressBar *pbar;
GtkProgressBarPrivate *priv;
PangoLayout *layout;
PangoRectangle logical_rect;
widget = gtk_css_gadget_get_owner (gadget);
pbar = GTK_PROGRESS_BAR (widget);
priv = pbar->priv;
layout = gtk_progress_bar_get_layout (pbar);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (priv->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,
pango_layout_get_font_description (layout),
pango_context_get_language (context));
char_width = pango_font_metrics_get_approximate_char_width (metrics);
pango_font_metrics_unref (metrics);
*minimum = PANGO_PIXELS (char_width) * 3;
}
else
*minimum = logical_rect.width;
*natural = MAX (*minimum, logical_rect.width);
}
else
*minimum = *natural = logical_rect.height;
g_object_unref (layout);
}
static gint
get_number (GtkCssStyle *style,
guint property)
{
double d = _gtk_css_number_value_get (gtk_css_style_get_value (style, property), 100.0);
if (d < 1)
return ceil (d);
else
return floor (d);
}
static void
gtk_progress_bar_measure_trough (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget;
GtkProgressBarPrivate *priv;
GtkCssStyle *style;
widget = gtk_css_gadget_get_owner (gadget);
priv = GTK_PROGRESS_BAR (widget)->priv;
style = gtk_css_gadget_get_style (gadget);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gdouble min_width;
min_width = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_MIN_WIDTH), 100.0);
if (min_width > 0.0)
*minimum = 0;
else if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_widget_style_get (widget, "min-horizontal-bar-width", minimum, NULL);
else
gtk_widget_style_get (widget, "min-vertical-bar-width", minimum, NULL);
}
else
{
gdouble min_height;
min_height = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_MIN_HEIGHT), 100.0);
if (min_height > 0.0)
*minimum = 0;
else if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_widget_style_get (widget, "min-horizontal-bar-height", minimum, NULL);
else
gtk_widget_style_get (widget, "min-vertical-bar-height", minimum, NULL);
}
*natural = *minimum;
if (minimum_baseline)
*minimum_baseline = -1;
if (natural_baseline)
*natural_baseline = -1;
}
static void
gtk_progress_bar_measure_progress (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget;
GtkProgressBar *pbar;
GtkProgressBarPrivate *priv;
GtkCssStyle *style;
widget = gtk_css_gadget_get_owner (gadget);
pbar = GTK_PROGRESS_BAR (widget);
priv = pbar->priv;
style = gtk_css_gadget_get_style (gadget);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gint min_width;
min_width = get_number (style, GTK_CSS_PROPERTY_MIN_WIDTH);
if (min_width != 0)
*minimum = min_width;
else if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
*minimum = 0;
else
gtk_widget_style_get (widget, "min-vertical-bar-width", minimum, NULL);
}
else
{
gint min_height;
min_height = get_number (style, GTK_CSS_PROPERTY_MIN_HEIGHT);
if (min_height != 0)
*minimum = min_height;
else if (priv->orientation == GTK_ORIENTATION_VERTICAL)
*minimum = 0;
else
gtk_widget_style_get (widget, "min-horizontal-bar-height", minimum, NULL);
}
*natural = *minimum;
if (minimum_baseline)
*minimum_baseline = -1;
if (natural_baseline)
*natural_baseline = -1;
}
static void
gtk_progress_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAllocation clip;
gtk_widget_set_allocation (widget, allocation);
gtk_css_gadget_allocate (GTK_PROGRESS_BAR (widget)->priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
static void
gtk_progress_bar_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget;
GtkProgressBarPrivate *priv;
gint bar_width, bar_height;
gint text_width, text_height, text_min, text_nat;
GtkAllocation alloc;
GtkAllocation text_clip;
widget = gtk_css_gadget_get_owner (gadget);
priv = GTK_PROGRESS_BAR (widget)->priv;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_css_gadget_get_preferred_size (priv->trough_gadget,
GTK_ORIENTATION_VERTICAL,
-1,
&bar_height, NULL,
NULL, NULL);
bar_width = allocation->width;
}
else
{
gtk_css_gadget_get_preferred_size (priv->trough_gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&bar_width, NULL,
NULL, NULL);
bar_height = allocation->height;
}
alloc.x = allocation->x + allocation->width - bar_width;
alloc.y = allocation->y + allocation->height - bar_height;
alloc.width = bar_width;
alloc.height = bar_height;
gtk_css_gadget_allocate (priv->trough_gadget, &alloc, -1, out_clip);
if (!priv->show_text)
return;
gtk_css_gadget_get_preferred_size (priv->text_gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&text_min, &text_nat,
NULL, NULL);
gtk_css_gadget_get_preferred_size (priv->text_gadget,
GTK_ORIENTATION_VERTICAL,
-1,
&text_height, NULL,
NULL, NULL);
text_width = CLAMP (text_nat, text_min, allocation->width);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
alloc.x = allocation->x + (allocation->width - text_width) / 2;
alloc.y = allocation->y;
alloc.width = text_width;
alloc.height = text_height;
}
else
{
alloc.x = allocation->x + allocation->width - text_width;
alloc.y = allocation->y + (allocation->height - text_height) / 2;
alloc.width = text_width;
alloc.height = text_height;
}
gtk_css_gadget_allocate (priv->text_gadget, &alloc, -1, &text_clip);
gdk_rectangle_union (out_clip, &text_clip, out_clip);
}
static void
gtk_progress_bar_allocate_trough (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget;
GtkProgressBarPrivate *priv;
GtkAllocation alloc;
gint width, height;
gboolean inverted;
widget = gtk_css_gadget_get_owner (gadget);
priv = GTK_PROGRESS_BAR (widget)->priv;
inverted = priv->inverted;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
inverted = !inverted;
}
gtk_css_gadget_get_preferred_size (priv->progress_gadget,
GTK_ORIENTATION_VERTICAL,
-1,
&height, NULL,
NULL, NULL);
gtk_css_gadget_get_preferred_size (priv->progress_gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&width, NULL,
NULL, NULL);
if (priv->activity_mode)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
alloc.width = width + (allocation->width - width) / priv->activity_blocks;
alloc.x = allocation->x + priv->activity_pos * (allocation->width - alloc.width);
alloc.y = allocation->y + (allocation->height - height) / 2;
alloc.height = height;
}
else
{
alloc.height = height + (allocation->height - height) / priv->activity_blocks;
alloc.y = allocation->y + priv->activity_pos * (allocation->height - alloc.height);
alloc.x = allocation->x + (allocation->width - width) / 2;
alloc.width = width;
}
}
else
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
alloc.width = width + (allocation->width - width) * priv->fraction;
alloc.height = height;
alloc.y = allocation->y + (allocation->height - height) / 2;
if (!inverted)
alloc.x = allocation->x;
else
alloc.x = allocation->x + allocation->width - alloc.width;
}
else
{
alloc.width = width;
alloc.height = height + (allocation->height - height) * priv->fraction;
alloc.x = allocation->x + (allocation->width - width) / 2;
if (!inverted)
alloc.y = allocation->y;
else
alloc.y = allocation->y + allocation->height - alloc.height;
}
}
gtk_css_gadget_allocate (priv->progress_gadget, &alloc, -1, out_clip);
}
static void
gtk_progress_bar_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_PROGRESS_BAR (widget)->priv->gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_progress_bar_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_PROGRESS_BAR (widget)->priv->gadget,
GTK_ORIENTATION_VERTICAL,
-1,
minimum, natural,
NULL, NULL);
}
static gboolean
tick_cb (GtkWidget *widget,
GdkFrameClock *frame_clock,
gpointer user_data)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
GtkProgressBarPrivate *priv = pbar->priv;
gint64 frame_time;
gdouble iteration, pulse_iterations, current_iterations, fraction;
if (priv->pulse2 == 0 && priv->pulse1 == 0)
return G_SOURCE_CONTINUE;
frame_time = gdk_frame_clock_get_frame_time (frame_clock);
gtk_progress_tracker_advance_frame (&priv->tracker, frame_time);
g_assert (priv->pulse2 > priv->pulse1);
pulse_iterations = (priv->pulse2 - priv->pulse1) / (gdouble) G_USEC_PER_SEC;
current_iterations = (frame_time - priv->pulse1) / (gdouble) G_USEC_PER_SEC;
iteration = gtk_progress_tracker_get_iteration (&priv->tracker);
/* Determine the fraction to move the block from one frame
* to the next when pulse_fraction is how far the block should
* move between two calls to gtk_progress_bar_pulse().
*/
fraction = priv->pulse_fraction * (iteration - priv->last_iteration) / MAX (pulse_iterations, current_iterations);
priv->last_iteration = iteration;
if (current_iterations > 3 * pulse_iterations)
{
priv->pulse1 = 0;
return G_SOURCE_CONTINUE;
}
/* advance the block */
if (priv->activity_dir == 0)
{
priv->activity_pos += fraction;
if (priv->activity_pos > 1.0)
{
priv->activity_pos = 1.0;
priv->activity_dir = 1;
}
}
else
{
priv->activity_pos -= fraction;
if (priv->activity_pos <= 0)
{
priv->activity_pos = 0;
priv->activity_dir = 0;
}
}
update_node_classes (pbar);
gtk_widget_queue_allocate (widget);
return G_SOURCE_CONTINUE;
}
static void
gtk_progress_bar_act_mode_enter (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv = pbar->priv;
GtkWidget *widget = GTK_WIDGET (pbar);
gboolean inverted;
gtk_css_gadget_add_class (priv->progress_gadget, GTK_STYLE_CLASS_PULSE);
inverted = priv->inverted;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
inverted = !inverted;
}
/* calculate start pos */
if (!inverted)
{
priv->activity_pos = 0.0;
priv->activity_dir = 0;
}
else
{
priv->activity_pos = 1.0;
priv->activity_dir = 1;
}
update_node_classes (pbar);
/* No fixed schedule for pulses, will adapt after calls to update_pulse. Just
* start the tracker to repeat forever with iterations every second.*/
gtk_progress_tracker_start (&priv->tracker, G_USEC_PER_SEC, 0, INFINITY);
priv->tick_id = gtk_widget_add_tick_callback (widget, tick_cb, NULL, NULL);
priv->pulse2 = 0;
priv->pulse1 = 0;
priv->last_iteration = 0;
}
static void
gtk_progress_bar_act_mode_leave (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv = pbar->priv;
if (priv->tick_id)
gtk_widget_remove_tick_callback (GTK_WIDGET (pbar), priv->tick_id);
priv->tick_id = 0;
gtk_css_gadget_remove_class (priv->progress_gadget, GTK_STYLE_CLASS_PULSE);
update_node_classes (pbar);
}
static gboolean
gtk_progress_bar_render_text (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget;
GtkProgressBar *pbar;
GtkProgressBarPrivate *priv;
GtkStyleContext *context;
PangoLayout *layout;
widget = gtk_css_gadget_get_owner (gadget);
pbar = GTK_PROGRESS_BAR (widget);
priv = pbar->priv;
context = gtk_widget_get_style_context (widget);
gtk_style_context_save_to_node (context, gtk_css_gadget_get_node (gadget));
layout = gtk_progress_bar_get_layout (pbar);
pango_layout_set_ellipsize (layout, priv->ellipsize);
if (priv->ellipsize)
pango_layout_set_width (layout, width * PANGO_SCALE);
gtk_render_layout (context, cr, x, y, layout);
g_object_unref (layout);
gtk_style_context_restore (context);
return FALSE;
}
static gboolean
gtk_progress_bar_render_trough (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget;
GtkProgressBarPrivate *priv;
widget = gtk_css_gadget_get_owner (gadget);
priv = GTK_PROGRESS_BAR (widget)->priv;
gtk_css_gadget_draw (priv->progress_gadget, cr);
return FALSE;
}
static gboolean
gtk_progress_bar_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget;
GtkProgressBarPrivate *priv;
widget = gtk_css_gadget_get_owner (gadget);
priv = GTK_PROGRESS_BAR (widget)->priv;
gtk_css_gadget_draw (priv->trough_gadget, cr);
if (priv->show_text)
gtk_css_gadget_draw (priv->text_gadget, cr);
return FALSE;
}
static gboolean
gtk_progress_bar_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
GtkProgressBarPrivate *priv = pbar->priv;
gtk_css_gadget_draw (priv->gadget, cr);
return FALSE;
}
static void
gtk_progress_bar_set_activity_mode (GtkProgressBar *pbar,
gboolean activity_mode)
{
GtkProgressBarPrivate *priv = pbar->priv;
activity_mode = !!activity_mode;
if (priv->activity_mode != activity_mode)
{
priv->activity_mode = activity_mode;
if (priv->activity_mode)
gtk_progress_bar_act_mode_enter (pbar);
else
gtk_progress_bar_act_mode_leave (pbar);
gtk_widget_queue_resize (GTK_WIDGET (pbar));
}
}
/**
* 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)
{
GtkProgressBarPrivate* priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
priv->fraction = CLAMP (fraction, 0.0, 1.0);
gtk_progress_bar_set_activity_mode (pbar, FALSE);
gtk_widget_queue_allocate (GTK_WIDGET (pbar));
update_fraction_classes (pbar);
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_FRACTION]);
}
static void
gtk_progress_bar_update_pulse (GtkProgressBar *pbar)
{
GtkProgressBarPrivate *priv = pbar->priv;
gint64 pulse_time = g_get_monotonic_time ();
if (priv->pulse2 == pulse_time)
return;
priv->pulse1 = priv->pulse2;
priv->pulse2 = pulse_time;
}
/**
* gtk_progress_bar_pulse:
* @pbar: a #GtkProgressBar
*
* Indicates that some progress has been 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));
gtk_progress_bar_set_activity_mode (pbar, TRUE);
gtk_progress_bar_update_pulse (pbar);
}
/**
* gtk_progress_bar_set_text:
* @pbar: a #GtkProgressBar
* @text: (allow-none): a UTF-8 string, or %NULL
*
* Causes the given @text to appear next to the progress bar.
*
* If @text is %NULL and #GtkProgressBar:show-text is %TRUE, the current
* value of #GtkProgressBar:fraction will be displayed as a percentage.
*
* If @text is non-%NULL and #GtkProgressBar:show-text is %TRUE, the text
* will be displayed. In this case, it will not display the progress
* percentage. If @text is the empty string, the progress bar will still
* be styled and sized suitably for containing text, as long as
* #GtkProgressBar:show-text is %TRUE.
*/
void
gtk_progress_bar_set_text (GtkProgressBar *pbar,
const gchar *text)
{
GtkProgressBarPrivate *priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
/* Don't notify again if nothing's changed. */
if (g_strcmp0 (priv->text, text) == 0)
return;
g_free (priv->text);
priv->text = g_strdup (text);
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_TEXT]);
}
static void
gtk_progress_bar_text_style_changed (GtkCssNode *node,
GtkCssStyleChange *change,
GtkProgressBar *pbar)
{
if (change == NULL ||
gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_TEXT_ATTRS) ||
gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_FONT))
{
gtk_widget_queue_resize (GTK_WIDGET (pbar));
}
}
/**
* gtk_progress_bar_set_show_text:
* @pbar: a #GtkProgressBar
* @show_text: whether to show text
*
* Sets whether the progress bar will show text next to the bar.
* The shown text is either the value of the #GtkProgressBar:text
* property or, if that is %NULL, the #GtkProgressBar:fraction value,
* as a percentage.
*
* To make a progress bar that is styled and sized suitably for containing
* text (even if the actual text is blank), set #GtkProgressBar:show-text to
* %TRUE and #GtkProgressBar:text to the empty string (not %NULL).
*
* Since: 3.0
*/
void
gtk_progress_bar_set_show_text (GtkProgressBar *pbar,
gboolean show_text)
{
GtkProgressBarPrivate *priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
show_text = !!show_text;
if (priv->show_text == show_text)
return;
priv->show_text = show_text;
if (show_text)
{
priv->text_gadget = gtk_css_custom_gadget_new ("text",
GTK_WIDGET (pbar),
priv->gadget,
priv->trough_gadget,
gtk_progress_bar_measure_text,
NULL,
gtk_progress_bar_render_text,
NULL,
NULL);
g_signal_connect (gtk_css_gadget_get_node (priv->text_gadget), "style-changed",
G_CALLBACK (gtk_progress_bar_text_style_changed), pbar);
update_node_state (pbar);
}
else
{
if (priv->text_gadget)
gtk_css_node_set_parent (gtk_css_gadget_get_node (priv->text_gadget), NULL);
g_clear_object (&priv->text_gadget);
}
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_SHOW_TEXT]);
}
/**
* gtk_progress_bar_get_show_text:
* @pbar: a #GtkProgressBar
*
* Gets the value of the #GtkProgressBar:show-text property.
* See gtk_progress_bar_set_show_text().
*
* Returns: %TRUE if text is shown in the progress bar
*
* Since: 3.0
*/
gboolean
gtk_progress_bar_get_show_text (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), FALSE);
return pbar->priv->show_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)
{
GtkProgressBarPrivate *priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
priv->pulse_fraction = fraction;
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_PULSE_STEP]);
}
static void
gtk_progress_bar_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
update_node_classes (pbar);
update_node_state (pbar);
GTK_WIDGET_CLASS (gtk_progress_bar_parent_class)->direction_changed (widget, previous_dir);
}
static void
gtk_progress_bar_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
update_node_state (pbar);
GTK_WIDGET_CLASS (gtk_progress_bar_parent_class)->state_flags_changed (widget, previous_state);
}
static void
gtk_progress_bar_set_orientation (GtkProgressBar *pbar,
GtkOrientation orientation)
{
GtkProgressBarPrivate *priv = pbar->priv;
if (priv->orientation == orientation)
return;
priv->orientation = orientation;
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (pbar));
update_node_classes (pbar);
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify (G_OBJECT (pbar), "orientation");
}
/**
* gtk_progress_bar_set_inverted:
* @pbar: a #GtkProgressBar
* @inverted: %TRUE to invert the progress bar
*
* Progress bars normally grow from top to bottom or left to right.
* Inverted progress bars grow in the opposite direction.
*/
void
gtk_progress_bar_set_inverted (GtkProgressBar *pbar,
gboolean inverted)
{
GtkProgressBarPrivate *priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
if (priv->inverted == inverted)
return;
priv->inverted = inverted;
update_node_classes (pbar);
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_INVERTED]);
}
/**
* gtk_progress_bar_get_text:
* @pbar: a #GtkProgressBar
*
* Retrieves the text that is displayed with 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.
*
* Returns: (nullable): text, or %NULL; this string is owned by the widget
* and should not be modified or freed.
*/
const gchar*
gtk_progress_bar_get_text (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL);
return pbar->priv->text;
}
/**
* gtk_progress_bar_get_fraction:
* @pbar: a #GtkProgressBar
*
* Returns the current fraction of the task that’s been completed.
*
* Returns: 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 pbar->priv->fraction;
}
/**
* gtk_progress_bar_get_pulse_step:
* @pbar: a #GtkProgressBar
*
* Retrieves the pulse step set with gtk_progress_bar_set_pulse_step().
*
* Returns: 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->priv->pulse_fraction;
}
/**
* gtk_progress_bar_get_inverted:
* @pbar: a #GtkProgressBar
*
* Gets the value set by gtk_progress_bar_set_inverted().
*
* Returns: %TRUE if the progress bar is inverted
*/
gboolean
gtk_progress_bar_get_inverted (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), FALSE);
return pbar->priv->inverted;
}
/**
* 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)
{
GtkProgressBarPrivate *priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE &&
mode <= PANGO_ELLIPSIZE_END);
priv = pbar->priv;
if ((PangoEllipsizeMode)priv->ellipsize != mode)
{
priv->ellipsize = mode;
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_ELLIPSIZE]);
gtk_widget_queue_resize (GTK_WIDGET (pbar));
}
}
/**
* gtk_progress_bar_get_ellipsize:
* @pbar: a #GtkProgressBar
*
* Returns the ellipsizing position of the progress bar.
* See gtk_progress_bar_set_ellipsize().
*
* Returns: #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->priv->ellipsize;
}
Reference in New Issue View Git Blame Copy Permalink