/* 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 "gtkprogressbar.h"
#include "gtkaccessiblerange.h"
#include "gtkboxlayout.h"
#include "gtkcssboxesprivate.h"
#include "gtkgizmoprivate.h"
#include <glib/gi18n-lib.h>
#include "gtklabel.h"
#include "gtkorientable.h"
#include "gtkprogresstrackerprivate.h"
#include "gtkprivate.h"
#include "gtksnapshot.h"
#include "gtkwidgetprivate.h"
#include <string.h>
/**
* GtkProgressBar :
*
* Displays the progress of a long - running operation .
*
* ` GtkProgressBar ` provides a visual clue that processing is underway .
* It can be used in two different modes : percentage mode and activity mode .
*
* < picture >
* < source srcset = " progressbar - dark . png " media = " ( prefers - color - scheme : dark ) " >
* < img alt = " An example GtkProgressBar " src = " progressbar . png " >
* < / picture >
*
* 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
* [ method @ Gtk . ProgressBar . 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 [ method @ Gtk . ProgressBar . 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
*
* ` ` `
* 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 .
*
* # Accessibility
*
* ` GtkProgressBar ` uses the [ enum @ Gtk . AccessibleRole . progress_bar ] role
* and sets the [ enum @ Gtk . AccessibleProperty . value_min ] , [ enum @ Gtk . AccessibleProperty . value_max ] and [ enum @ Gtk . AccessibleProperty . value_now ] properties to reflect
* the progress .
*/
typedef struct _GtkProgressBarClass GtkProgressBarClass;
struct _GtkProgressBar
{
GtkWidget parent_instance;
char *text;
GtkWidget *label;
GtkWidget *trough_widget;
GtkWidget *progress_widget;
double fraction;
double pulse_fraction;
double activity_pos;
guint activity_blocks;
GtkOrientation orientation;
guint tick_id;
GtkProgressTracker tracker;
gint64 pulse1;
gint64 pulse2;
double last_iteration;
guint activity_dir : 1 ;
guint activity_mode : 1 ;
guint ellipsize : 3 ;
guint show_text : 1 ;
guint inverted : 1 ;
};
struct _GtkProgressBarClass
{
GtkWidgetClass parent_class;
};
enum {
PROP_0,
PROP_FRACTION,
PROP_PULSE_STEP,
PROP_INVERTED,
PROP_TEXT,
PROP_SHOW_TEXT,
PROP_ELLIPSIZE,
/* GtkOrientable */
PROP_ORIENTATION,
NUM_PROPERTIES
};
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_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_dispose (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);
G_DEFINE_TYPE_WITH_CODE (GtkProgressBar, gtk_progress_bar, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACCESSIBLE_RANGE, 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->dispose = gtk_progress_bar_dispose;
gobject_class->finalize = gtk_progress_bar_finalize;
widget_class->direction_changed = gtk_progress_bar_direction_changed;
progress_props[PROP_ORIENTATION] = g_param_spec_override ("orientation" ,
g_object_interface_find_property (g_type_default_interface_ref (GTK_TYPE_ORIENTABLE), "orientation" ));
/**
* GtkProgressBar : inverted :
*
* Invert the direction in which the progress bar grows .
*/
progress_props[PROP_INVERTED] =
g_param_spec_boolean ("inverted" , NULL, NULL,
FALSE ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkProgressBar : fraction :
*
* The fraction of total work that has been completed .
*/
progress_props[PROP_FRACTION] =
g_param_spec_double ("fraction" , NULL, NULL,
0 .0 , 1 .0 ,
0 .0 ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkProgressBar : pulse - step :
*
* The fraction of total progress to move the bounding block when pulsed .
*/
progress_props[PROP_PULSE_STEP] =
g_param_spec_double ("pulse-step" , NULL, NULL,
0 .0 , 1 .0 ,
0 .1 ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkProgressBar : text :
*
* Text to be displayed in the progress bar .
*/
progress_props[PROP_TEXT] =
g_param_spec_string ("text" , NULL, NULL,
NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME);
/**
* 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 [ property @ Gtk . ProgressBar : text ]
* property or , if that is % NULL , the [ property @ Gtk . ProgressBar : 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 [ property @ Gtk . ProgressBar : show - text ]
* to % TRUE and [ property @ Gtk . ProgressBar : text ] to the empty string ( not % NULL ) .
*/
progress_props[PROP_SHOW_TEXT] =
g_param_spec_boolean ("show-text" , NULL, NULL,
FALSE ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkProgressBar : ellipsize :
*
* The preferred place to ellipsize the string .
*
* The text will be ellipsized 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 [ method @ Gtk . Widget . set_size_request ] .
*/
progress_props[PROP_ELLIPSIZE] =
g_param_spec_enum ("ellipsize" , NULL, NULL,
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, NUM_PROPERTIES, progress_props);
gtk_widget_class_set_css_name (widget_class, I_("progressbar" ));
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_PROGRESS_BAR);
}
static void
update_fraction_classes (GtkProgressBar *pbar)
{
gboolean empty = FALSE ;
gboolean full = FALSE ;
/* Here we set classes based on fill-level unless we're in activity-mode.
*/
if (!pbar->activity_mode)
{
if (pbar->fraction <= 0 .0 )
empty = TRUE ;
else if (pbar->fraction >= 1 .0 )
full = TRUE ;
}
if (empty)
gtk_widget_add_css_class (pbar->trough_widget, "empty" );
else
gtk_widget_remove_css_class (pbar->trough_widget, "empty" );
if (full)
gtk_widget_add_css_class (pbar->trough_widget, "full" );
else
gtk_widget_remove_css_class (pbar->trough_widget, "full" );
}
static void
update_node_classes (GtkProgressBar *pbar)
{
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 (pbar->activity_mode)
{
if (pbar->orientation == GTK_ORIENTATION_HORIZONTAL)
{
left = pbar->activity_pos <= 0 .0 ;
right = pbar->activity_pos >= 1 .0 ;
}
else
{
top = pbar->activity_pos <= 0 .0 ;
bottom = pbar->activity_pos >= 1 .0 ;
}
}
else /* continuous */
{
gboolean inverted;
inverted = pbar->inverted;
if (gtk_widget_get_direction (GTK_WIDGET (pbar)) == GTK_TEXT_DIR_RTL)
{
if (pbar->orientation == GTK_ORIENTATION_HORIZONTAL)
inverted = !inverted;
}
if (pbar->orientation == GTK_ORIENTATION_HORIZONTAL)
{
left = !inverted || pbar->fraction >= 1 .0 ;
right = inverted || pbar->fraction >= 1 .0 ;
}
else
{
top = !inverted || pbar->fraction >= 1 .0 ;
bottom = inverted || pbar->fraction >= 1 .0 ;
}
}
if (left)
gtk_widget_add_css_class (pbar->progress_widget, "left" );
else
gtk_widget_remove_css_class (pbar->progress_widget, "left" );
if (right)
gtk_widget_add_css_class (pbar->progress_widget, "right" );
else
gtk_widget_remove_css_class (pbar->progress_widget, "right" );
if (top)
gtk_widget_add_css_class (pbar->progress_widget, "top" );
else
gtk_widget_remove_css_class (pbar->progress_widget, "top" );
if (bottom)
gtk_widget_add_css_class (pbar->progress_widget, "bottom" );
else
gtk_widget_remove_css_class (pbar->progress_widget, "bottom" );
update_fraction_classes (pbar);
}
static void
allocate_trough (GtkGizmo *gizmo,
int width,
int height,
int baseline)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (gtk_widget_get_parent (GTK_WIDGET (gizmo)));
GtkAllocation alloc;
int progress_width, progress_height;
gboolean inverted;
inverted = pbar->inverted;
if (gtk_widget_get_direction (GTK_WIDGET (pbar)) == GTK_TEXT_DIR_RTL)
{
if (pbar->orientation == GTK_ORIENTATION_HORIZONTAL)
inverted = !inverted;
}
gtk_widget_measure (pbar->progress_widget, GTK_ORIENTATION_VERTICAL, -1 ,
&progress_height, NULL,
NULL, NULL);
gtk_widget_measure (pbar->progress_widget, GTK_ORIENTATION_HORIZONTAL, -1 ,
&progress_width, NULL,
NULL, NULL);
if (pbar->activity_mode)
{
if (pbar->orientation == GTK_ORIENTATION_HORIZONTAL)
{
alloc.width = progress_width + (width - progress_width) / pbar->activity_blocks;
alloc.x = pbar->activity_pos * (width - alloc.width);
alloc.y = (height - progress_height) / 2 ;
alloc.height = progress_height;
}
else
{
alloc.height = progress_height + (height - progress_height) / pbar->activity_blocks;
alloc.y = pbar->activity_pos * (height - alloc.height);
alloc.x = (width - progress_width) / 2 ;
alloc.width = progress_width;
}
}
else
{
if (pbar->orientation == GTK_ORIENTATION_HORIZONTAL)
{
alloc.width = progress_width + (width - progress_width) * pbar->fraction;
alloc.height = progress_height;
alloc.y = (height - progress_height) / 2 ;
if (!inverted)
alloc.x = 0 ;
else
alloc.x = width - alloc.width;
}
else
{
alloc.width = progress_width;
alloc.height = progress_height + (height - progress_height) * pbar->fraction;
alloc.x = (width - progress_width) / 2 ;
if (!inverted)
alloc.y = 0 ;
else
alloc.y = height - alloc.height;
}
}
gtk_widget_size_allocate (pbar->progress_widget, &alloc, -1 );
}
static void
snapshot_trough (GtkGizmo *gizmo,
GtkSnapshot *snapshot)
{
GtkWidget *widget = gtk_widget_get_parent (GTK_WIDGET (gizmo));
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
if (pbar->progress_widget)
{
GtkCssBoxes boxes;
gtk_css_boxes_init (&boxes, GTK_WIDGET (gizmo));
gtk_snapshot_push_rounded_clip (snapshot, gtk_css_boxes_get_border_box (&boxes));
gtk_widget_snapshot_child (GTK_WIDGET (gizmo), pbar->progress_widget, snapshot);
gtk_snapshot_pop (snapshot);
}
}
static void
gtk_progress_bar_init (GtkProgressBar *pbar)
{
pbar->inverted = FALSE ;
pbar->pulse_fraction = 0 .1 ;
pbar->activity_pos = 0 ;
pbar->activity_dir = 1 ;
pbar->activity_blocks = 5 ;
pbar->ellipsize = PANGO_ELLIPSIZE_NONE;
pbar->show_text = FALSE ;
pbar->text = NULL;
pbar->fraction = 0 .0 ;
pbar->trough_widget = gtk_gizmo_new_with_role ("trough" ,
GTK_ACCESSIBLE_ROLE_NONE,
NULL,
allocate_trough,
snapshot_trough,
NULL,
NULL, NULL);
gtk_widget_set_parent (pbar->trough_widget, GTK_WIDGET (pbar));
pbar->progress_widget = gtk_gizmo_new_with_role ("progress" ,
GTK_ACCESSIBLE_ROLE_NONE,
NULL, NULL, NULL, NULL, NULL, NULL);
gtk_widget_set_parent (pbar->progress_widget, pbar->trough_widget);
/* horizontal is default */
pbar->orientation = GTK_ORIENTATION_VERTICAL; /* Just to force an update... */
gtk_progress_bar_set_orientation (pbar, GTK_ORIENTATION_HORIZONTAL);
gtk_widget_update_orientation (GTK_WIDGET (pbar), pbar->orientation);
gtk_accessible_update_property (GTK_ACCESSIBLE (pbar),
GTK_ACCESSIBLE_PROPERTY_VALUE_MAX, 1 .0 ,
GTK_ACCESSIBLE_PROPERTY_VALUE_MIN, 0 .0 ,
GTK_ACCESSIBLE_PROPERTY_VALUE_NOW, 0 .0 ,
-1 );
}
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);
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, pbar->orientation);
break ;
case PROP_INVERTED:
g_value_set_boolean (value, pbar->inverted);
break ;
case PROP_FRACTION:
g_value_set_double (value, pbar->fraction);
break ;
case PROP_PULSE_STEP:
g_value_set_double (value, pbar->pulse_fraction);
break ;
case PROP_TEXT:
g_value_set_string (value, pbar->text);
break ;
case PROP_SHOW_TEXT:
g_value_set_boolean (value, pbar->show_text);
break ;
case PROP_ELLIPSIZE:
g_value_set_enum (value, pbar->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_dispose (GObject *object)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (object);
if (pbar->activity_mode)
gtk_progress_bar_act_mode_leave (pbar);
g_clear_pointer (&pbar->label, gtk_widget_unparent);
g_clear_pointer (&pbar->progress_widget, gtk_widget_unparent);
g_clear_pointer (&pbar->trough_widget, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_progress_bar_parent_class)->dispose (object);
}
static void
gtk_progress_bar_finalize (GObject *object)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (object);
g_free (pbar->text);
G_OBJECT_CLASS (gtk_progress_bar_parent_class)->finalize (object);
}
static char *
get_current_text (GtkProgressBar *pbar)
{
if (pbar->text)
return g_strdup (pbar->text);
else
return g_strdup_printf (C_("progress bar label" , "%.0f %%" ), pbar->fraction * 100 .0 );
}
static gboolean
tick_cb (GtkWidget *widget,
GdkFrameClock *frame_clock,
gpointer user_data)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
gint64 frame_time;
double iteration, pulse_iterations, current_iterations, fraction;
if (pbar->pulse2 == 0 && pbar->pulse1 == 0 )
return G_SOURCE_CONTINUE;
frame_time = gdk_frame_clock_get_frame_time (frame_clock);
gtk_progress_tracker_advance_frame (&pbar->tracker, frame_time);
g_assert (pbar->pulse2 > pbar->pulse1);
pulse_iterations = (pbar->pulse2 - pbar->pulse1) / (double ) G_USEC_PER_SEC;
current_iterations = (frame_time - pbar->pulse1) / (double ) G_USEC_PER_SEC;
iteration = gtk_progress_tracker_get_iteration (&pbar->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 = pbar->pulse_fraction * (iteration - pbar->last_iteration) / MAX (pulse_iterations, current_iterations);
pbar->last_iteration = iteration;
if (current_iterations > 3 * pulse_iterations)
return G_SOURCE_CONTINUE;
/* advance the block */
if (pbar->activity_dir == 0 )
{
pbar->activity_pos += fraction;
if (pbar->activity_pos > 1 .0 )
{
pbar->activity_pos = 1 .0 ;
pbar->activity_dir = 1 ;
}
}
else
{
pbar->activity_pos -= fraction;
if (pbar->activity_pos <= 0 )
{
pbar->activity_pos = 0 ;
pbar->activity_dir = 0 ;
}
}
update_node_classes (pbar);
gtk_widget_queue_allocate (pbar->trough_widget);
return G_SOURCE_CONTINUE;
}
static void
gtk_progress_bar_act_mode_enter (GtkProgressBar *pbar)
{
GtkWidget *widget = GTK_WIDGET (pbar);
gboolean inverted;
gtk_widget_add_css_class (pbar->progress_widget, "pulse" );
gtk_accessible_update_state (GTK_ACCESSIBLE (pbar),
GTK_ACCESSIBLE_STATE_BUSY, TRUE ,
-1 );
inverted = pbar->inverted;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
if (pbar->orientation == GTK_ORIENTATION_HORIZONTAL)
inverted = !inverted;
}
/* calculate start pos */
if (!inverted)
{
pbar->activity_pos = 0 .0 ;
pbar->activity_dir = 0 ;
}
else
{
pbar->activity_pos = 1 .0 ;
pbar->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 (&pbar->tracker, G_USEC_PER_SEC, 0 , INFINITY);
pbar->tick_id = gtk_widget_add_tick_callback (widget, tick_cb, NULL, NULL);
pbar->pulse2 = 0 ;
pbar->pulse1 = 0 ;
pbar->last_iteration = 0 ;
}
static void
gtk_progress_bar_act_mode_leave (GtkProgressBar *pbar)
{
if (pbar->tick_id)
gtk_widget_remove_tick_callback (GTK_WIDGET (pbar), pbar->tick_id);
pbar->tick_id = 0 ;
gtk_accessible_update_state (GTK_ACCESSIBLE (pbar),
GTK_ACCESSIBLE_STATE_BUSY, FALSE ,
-1 );
gtk_widget_remove_css_class (pbar->progress_widget, "pulse" );
update_node_classes (pbar);
}
static void
gtk_progress_bar_set_activity_mode (GtkProgressBar *pbar,
gboolean activity_mode)
{
if (pbar->activity_mode == activity_mode)
return ;
pbar->activity_mode = activity_mode;
if (pbar->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,
double fraction)
{
char *text = NULL;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
pbar->fraction = CLAMP (fraction, 0 .0 , 1 .0 );
if (pbar->label)
{
text = get_current_text (pbar);
gtk_label_set_label (GTK_LABEL (pbar->label), text);
}
gtk_progress_bar_set_activity_mode (pbar, FALSE );
gtk_widget_queue_allocate (pbar->trough_widget);
update_fraction_classes (pbar);
gtk_accessible_update_property (GTK_ACCESSIBLE (pbar),
GTK_ACCESSIBLE_PROPERTY_VALUE_MAX, 1 .0 ,
GTK_ACCESSIBLE_PROPERTY_VALUE_MIN, 0 .0 ,
GTK_ACCESSIBLE_PROPERTY_VALUE_NOW, fraction,
-1 );
if (text != NULL)
{
gtk_accessible_update_property (GTK_ACCESSIBLE (pbar),
GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT, text,
-1 );
}
else
{
gtk_accessible_reset_property (GTK_ACCESSIBLE (pbar), GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT);
}
g_free (text);
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_FRACTION]);
}
static void
gtk_progress_bar_update_pulse (GtkProgressBar *pbar)
{
gint64 pulse_time = g_get_monotonic_time ();
if (pbar->pulse2 == pulse_time)
return ;
pbar->pulse1 = pbar->pulse2;
pbar->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 [ method @ Gtk . ProgressBar . pulse ]
* causes the block to move by a little bit ( the amount of movement
* per pulse is determined by [ method @ Gtk . ProgressBar . 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 : ( nullable ) : a UTF - 8 string
*
* Causes the given @ text to appear next to the progress bar .
*
* If @ text is % NULL and [ property @ Gtk . ProgressBar : show - text ] is % TRUE ,
* the current value of [ property @ Gtk . ProgressBar : fraction ] will be displayed
* as a percentage .
*
* If @ text is non - % NULL and [ property @ Gtk . ProgressBar : 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
* [ property @ Gtk . ProgressBar : show - text ] is % TRUE .
*/
void
gtk_progress_bar_set_text (GtkProgressBar *pbar,
const char *text)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
/* Don't notify again if nothing's changed. */
if (g_strcmp0 (pbar->text, text) == 0 )
return ;
g_free (pbar->text);
pbar->text = g_strdup (text);
if (pbar->label)
gtk_label_set_label (GTK_LABEL (pbar->label), text);
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_TEXT]);
}
/**
* 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 [ property @ Gtk . ProgressBar : text ]
* property or , if that is % NULL , the [ property @ Gtk . ProgressBar : 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 [ property @ Gtk . ProgressBar : show - text ]
* to % TRUE and [ property @ Gtk . ProgressBar : text ] to the empty string ( not % NULL ) .
*/
void
gtk_progress_bar_set_show_text (GtkProgressBar *pbar,
gboolean show_text)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
show_text = !!show_text;
if (pbar->show_text == show_text)
return ;
pbar->show_text = show_text;
if (show_text)
{
char *text = get_current_text (pbar);
pbar->label = g_object_new (GTK_TYPE_LABEL,
"accessible-role" , GTK_ACCESSIBLE_ROLE_NONE,
"css-name" , "text" ,
"label" , text,
"ellipsize" , pbar->ellipsize,
NULL);
gtk_widget_insert_after (pbar->label, GTK_WIDGET (pbar), NULL);
g_free (text);
}
else
{
g_clear_pointer (&pbar->label, gtk_widget_unparent);
}
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_SHOW_TEXT]);
}
/**
* gtk_progress_bar_get_show_text :
* @ pbar : a ` GtkProgressBar `
*
* Returns whether the ` GtkProgressBar ` shows text .
*
* See [ method @ Gtk . ProgressBar . set_show_text ] .
*
* Returns : % TRUE if text is shown in the progress bar
*/
gboolean
gtk_progress_bar_get_show_text (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), FALSE );
return pbar->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 .
*
* The bouncing block is moved when [ method @ Gtk . ProgressBar . pulse ]
* is called .
*/
void
gtk_progress_bar_set_pulse_step (GtkProgressBar *pbar,
double fraction)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
pbar->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);
GTK_WIDGET_CLASS (gtk_progress_bar_parent_class)->direction_changed (widget, previous_dir);
}
static void
gtk_progress_bar_set_orientation (GtkProgressBar *pbar,
GtkOrientation orientation)
{
GtkBoxLayout *layout;
if (pbar->orientation == orientation)
return ;
pbar->orientation = orientation;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_widget_set_vexpand (pbar->trough_widget, FALSE );
gtk_widget_set_hexpand (pbar->trough_widget, TRUE );
gtk_widget_set_halign (pbar->trough_widget, GTK_ALIGN_FILL);
gtk_widget_set_valign (pbar->trough_widget, GTK_ALIGN_CENTER);
}
else
{
gtk_widget_set_vexpand (pbar->trough_widget, TRUE );
gtk_widget_set_hexpand (pbar->trough_widget, FALSE );
gtk_widget_set_halign (pbar->trough_widget, GTK_ALIGN_CENTER);
gtk_widget_set_valign (pbar->trough_widget, GTK_ALIGN_FILL);
}
gtk_widget_update_orientation (GTK_WIDGET (pbar), pbar->orientation);
update_node_classes (pbar);
layout = GTK_BOX_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (pbar)));
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_VERTICAL);
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_ORIENTATION]);
}
/**
* gtk_progress_bar_set_inverted :
* @ pbar : a ` GtkProgressBar `
* @ inverted : % TRUE to invert the progress bar
*
* Sets whether the progress bar is inverted .
*
* 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)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
if (pbar->inverted == inverted)
return ;
pbar->inverted = inverted;
gtk_widget_queue_allocate (pbar->trough_widget);
update_node_classes (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 .
*
* 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 ) : the text
*/
const char *
gtk_progress_bar_get_text (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL);
return pbar->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
*/
double
gtk_progress_bar_get_fraction (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0 );
return pbar->fraction;
}
/**
* gtk_progress_bar_get_pulse_step :
* @ pbar : a ` GtkProgressBar `
*
* Retrieves the pulse step .
*
* See [ method @ Gtk . ProgressBar . set_pulse_step ] .
*
* Returns : a fraction from 0 . 0 to 1 . 0
*/
double
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_inverted :
* @ pbar : a ` GtkProgressBar `
*
* Returns whether the progress bar is 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->inverted;
}
/**
* gtk_progress_bar_set_ellipsize :
* @ pbar : a ` GtkProgressBar `
* @ mode : a ` PangoEllipsizeMode `
*
* Sets the mode used to ellipsize the text .
*
* The text is ellipsized if there is not enough space
* to render the entire string .
*/
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)
return ;
pbar->ellipsize = mode;
if (pbar->label)
gtk_label_set_ellipsize (GTK_LABEL (pbar->label), mode);
g_object_notify_by_pspec (G_OBJECT (pbar), progress_props[PROP_ELLIPSIZE]);
}
/**
* gtk_progress_bar_get_ellipsize :
* @ pbar : a ` GtkProgressBar `
*
* Returns the ellipsizing position of the progress bar .
*
* See [ method @ Gtk . ProgressBar . set_ellipsize ] .
*
* Returns : ` PangoEllipsizeMode `
*/
PangoEllipsizeMode
gtk_progress_bar_get_ellipsize (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), PANGO_ELLIPSIZE_NONE);
return pbar->ellipsize;
}
Messung V0.5 in Prozent C=99 H=93 G=95
¤ Dauer der Verarbeitung: 0.21 Sekunden
(vorverarbeitet am 2026-07-03)
¤
*© Formatika GbR, Deutschland