1331 lines
42 KiB
C
1331 lines
42 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include <string.h>
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#include "gtkprogressbar.h"
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#include "gtkorientableprivate.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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#include "a11y/gtkprogressbaraccessible.h"
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/**
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* SECTION:gtkprogressbar
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* @Short_description: A widget which indicates progress visually
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* @Title: GtkProgressBar
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*
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* The #GtkProgressBar is typically used to display the progress of a long
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* running operation. It provides a visual clue that processing
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* is underway. The #GtkProgressBar can be used in two different
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* modes: percentage mode and activity mode.
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*
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* When an application can determine how much work needs to take place
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* (e.g. read a fixed number of bytes from a file) and can monitor its
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* progress, it can use the #GtkProgressBar in percentage mode and the user
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* sees a growing bar indicating the percentage of the work that has
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* been completed. In this mode, the application is required to call
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* gtk_progress_bar_set_fraction() periodically to update the progress bar.
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*
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* When an application has no accurate way of knowing the amount of work
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* to do, it can use the #GtkProgressBar in activity mode, which shows
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* activity by a block moving back and forth within the progress area. In
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* this mode, the application is required to call gtk_progress_bar_pulse()
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* periodically to update the progress bar.
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*
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* There is quite a bit of flexibility provided to control the appearance
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* of the #GtkProgressBar. Functions are provided to control the
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* orientation of the bar, optional text can be displayed along with
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* the bar, and the step size used in activity mode can be set.
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*/
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#define MIN_HORIZONTAL_BAR_WIDTH 150
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#define MIN_HORIZONTAL_BAR_HEIGHT 20
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#define MIN_VERTICAL_BAR_WIDTH 22
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#define MIN_VERTICAL_BAR_HEIGHT 80
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struct _GtkProgressBarPrivate
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{
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gchar *text;
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gdouble fraction;
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gdouble pulse_fraction;
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double activity_pos;
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guint activity_blocks;
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GtkOrientation orientation;
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guint activity_dir : 1;
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guint activity_mode : 1;
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guint ellipsize : 3;
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guint show_text : 1;
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guint inverted : 1;
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};
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enum {
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PROP_0,
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PROP_FRACTION,
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PROP_PULSE_STEP,
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PROP_ORIENTATION,
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PROP_INVERTED,
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PROP_TEXT,
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PROP_SHOW_TEXT,
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PROP_ELLIPSIZE
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};
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static void gtk_progress_bar_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_progress_bar_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_progress_bar_get_preferred_width (GtkWidget *widget,
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gint *minimum,
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gint *natural);
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static void gtk_progress_bar_get_preferred_height (GtkWidget *widget,
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gint *minimum,
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gint *natural);
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static void gtk_progress_bar_real_update (GtkProgressBar *progress);
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static gboolean gtk_progress_bar_draw (GtkWidget *widget,
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cairo_t *cr);
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static void gtk_progress_bar_act_mode_enter (GtkProgressBar *progress);
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static void gtk_progress_bar_finalize (GObject *object);
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static void gtk_progress_bar_set_orientation (GtkProgressBar *progress,
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GtkOrientation orientation);
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G_DEFINE_TYPE_WITH_CODE (GtkProgressBar, gtk_progress_bar, GTK_TYPE_WIDGET,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL))
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static void
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gtk_progress_bar_class_init (GtkProgressBarClass *class)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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gobject_class = G_OBJECT_CLASS (class);
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widget_class = (GtkWidgetClass *) class;
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gobject_class->set_property = gtk_progress_bar_set_property;
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gobject_class->get_property = gtk_progress_bar_get_property;
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gobject_class->finalize = gtk_progress_bar_finalize;
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widget_class->draw = gtk_progress_bar_draw;
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widget_class->get_preferred_width = gtk_progress_bar_get_preferred_width;
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widget_class->get_preferred_height = gtk_progress_bar_get_preferred_height;
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g_object_class_override_property (gobject_class, PROP_ORIENTATION, "orientation");
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g_object_class_install_property (gobject_class,
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PROP_INVERTED,
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g_param_spec_boolean ("inverted",
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P_("Inverted"),
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P_("Invert the direction in which the progress bar grows"),
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FALSE,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_FRACTION,
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g_param_spec_double ("fraction",
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P_("Fraction"),
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P_("The fraction of total work that has been completed"),
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0.0, 1.0, 0.0,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_PULSE_STEP,
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g_param_spec_double ("pulse-step",
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P_("Pulse Step"),
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P_("The fraction of total progress to move the bouncing block when pulsed"),
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0.0, 1.0, 0.1,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_TEXT,
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g_param_spec_string ("text",
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P_("Text"),
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P_("Text to be displayed in the progress bar"),
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NULL,
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GTK_PARAM_READWRITE));
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/**
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* GtkProgressBar:show-text:
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*
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* Sets whether the progress bar will show text superimposed
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* over the bar. The shown text is either the value of
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* the #GtkProgressBar:text property or, if that is %NULL,
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* the #GtkProgressBar:fraction value, as a percentage.
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*
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* To make a progress bar that is styled and sized suitably for containing
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* text (even if the actual text is blank), set #GtkProgressBar:show-text to
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* %TRUE and #GtkProgressBar:text to the empty string (not %NULL).
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*
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* Since: 3.0
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*/
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g_object_class_install_property (gobject_class,
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PROP_SHOW_TEXT,
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g_param_spec_boolean ("show-text",
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P_("Show text"),
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P_("Whether the progress is shown as text."),
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FALSE,
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GTK_PARAM_READWRITE));
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/**
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* GtkProgressBar:ellipsize:
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*
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* The preferred place to ellipsize the string, if the progress bar does
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* not have enough room to display the entire string, specified as a
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* #PangoEllipsizeMode.
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*
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* Note that setting this property to a value other than
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* %PANGO_ELLIPSIZE_NONE has the side-effect that the progress bar requests
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* only enough space to display the ellipsis ("..."). Another means to set a
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* progress bar's width is gtk_widget_set_size_request().
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*
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* Since: 2.6
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*/
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g_object_class_install_property (gobject_class,
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PROP_ELLIPSIZE,
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g_param_spec_enum ("ellipsize",
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P_("Ellipsize"),
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P_("The preferred place to ellipsize the string, if the progress bar "
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"does not have enough room to display the entire string, if at all."),
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PANGO_TYPE_ELLIPSIZE_MODE,
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PANGO_ELLIPSIZE_NONE,
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GTK_PARAM_READWRITE));
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("xspacing",
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P_("X spacing"),
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P_("Extra spacing applied to the width of a progress bar."),
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0, G_MAXINT, 7,
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G_PARAM_READWRITE));
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("yspacing",
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P_("Y spacing"),
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P_("Extra spacing applied to the height of a progress bar."),
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0, G_MAXINT, 7,
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G_PARAM_READWRITE));
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/**
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* GtkProgressBar:min-horizontal-bar-width:
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*
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* The minimum horizontal width of the progress bar.
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*
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* Since: 2.14
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*/
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("min-horizontal-bar-width",
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P_("Minimum horizontal bar width"),
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P_("The minimum horizontal width of the progress bar"),
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1, G_MAXINT, MIN_HORIZONTAL_BAR_WIDTH,
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G_PARAM_READWRITE));
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/**
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* GtkProgressBar:min-horizontal-bar-height:
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*
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* Minimum horizontal height of the progress bar.
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*
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* Since: 2.14
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*/
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("min-horizontal-bar-height",
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P_("Minimum horizontal bar height"),
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P_("Minimum horizontal height of the progress bar"),
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1, G_MAXINT, MIN_HORIZONTAL_BAR_HEIGHT,
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G_PARAM_READWRITE));
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/**
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* GtkProgressBar:min-vertical-bar-width:
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*
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* The minimum vertical width of the progress bar.
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*
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* Since: 2.14
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*/
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("min-vertical-bar-width",
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P_("Minimum vertical bar width"),
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P_("The minimum vertical width of the progress bar"),
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1, G_MAXINT, MIN_VERTICAL_BAR_WIDTH,
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G_PARAM_READWRITE));
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/**
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* GtkProgressBar:min-vertical-bar-height:
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*
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* The minimum vertical height of the progress bar.
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*
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* Since: 2.14
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*/
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("min-vertical-bar-height",
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P_("Minimum vertical bar height"),
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P_("The minimum vertical height of the progress bar"),
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1, G_MAXINT, MIN_VERTICAL_BAR_HEIGHT,
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G_PARAM_READWRITE));
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g_type_class_add_private (class, sizeof (GtkProgressBarPrivate));
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_PROGRESS_BAR_ACCESSIBLE);
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}
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static void
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gtk_progress_bar_init (GtkProgressBar *pbar)
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{
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GtkProgressBarPrivate *priv;
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pbar->priv = G_TYPE_INSTANCE_GET_PRIVATE (pbar,
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GTK_TYPE_PROGRESS_BAR,
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GtkProgressBarPrivate);
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priv = pbar->priv;
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priv->orientation = GTK_ORIENTATION_HORIZONTAL;
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priv->inverted = FALSE;
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priv->pulse_fraction = 0.1;
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priv->activity_pos = 0;
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priv->activity_dir = 1;
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priv->activity_blocks = 5;
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priv->ellipsize = PANGO_ELLIPSIZE_NONE;
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priv->show_text = FALSE;
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priv->text = NULL;
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priv->fraction = 0.0;
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gtk_widget_set_has_window (GTK_WIDGET (pbar), FALSE);
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}
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static void
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gtk_progress_bar_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkProgressBar *pbar;
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pbar = GTK_PROGRESS_BAR (object);
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switch (prop_id)
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{
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case PROP_ORIENTATION:
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gtk_progress_bar_set_orientation (pbar, g_value_get_enum (value));
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break;
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case PROP_INVERTED:
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gtk_progress_bar_set_inverted (pbar, g_value_get_boolean (value));
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break;
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case PROP_FRACTION:
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gtk_progress_bar_set_fraction (pbar, g_value_get_double (value));
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break;
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case PROP_PULSE_STEP:
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gtk_progress_bar_set_pulse_step (pbar, g_value_get_double (value));
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break;
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case PROP_TEXT:
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gtk_progress_bar_set_text (pbar, g_value_get_string (value));
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break;
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case PROP_SHOW_TEXT:
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gtk_progress_bar_set_show_text (pbar, g_value_get_boolean (value));
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break;
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case PROP_ELLIPSIZE:
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gtk_progress_bar_set_ellipsize (pbar, g_value_get_enum (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_progress_bar_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkProgressBar *pbar = GTK_PROGRESS_BAR (object);
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GtkProgressBarPrivate* priv = pbar->priv;
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switch (prop_id)
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{
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case PROP_ORIENTATION:
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g_value_set_enum (value, priv->orientation);
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break;
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case PROP_INVERTED:
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g_value_set_boolean (value, priv->inverted);
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break;
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case PROP_FRACTION:
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g_value_set_double (value, priv->fraction);
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break;
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case PROP_PULSE_STEP:
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g_value_set_double (value, priv->pulse_fraction);
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break;
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case PROP_TEXT:
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g_value_set_string (value, priv->text);
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break;
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case PROP_SHOW_TEXT:
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g_value_set_boolean (value, priv->show_text);
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break;
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case PROP_ELLIPSIZE:
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g_value_set_enum (value, priv->ellipsize);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/**
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* gtk_progress_bar_new:
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*
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* Creates a new #GtkProgressBar.
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*
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* Returns: a #GtkProgressBar.
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*/
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GtkWidget*
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gtk_progress_bar_new (void)
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{
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GtkWidget *pbar;
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pbar = g_object_new (GTK_TYPE_PROGRESS_BAR, NULL);
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return pbar;
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}
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static void
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gtk_progress_bar_real_update (GtkProgressBar *pbar)
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{
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GtkProgressBarPrivate *priv;
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GtkWidget *widget;
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g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
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priv = pbar->priv;
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widget = GTK_WIDGET (pbar);
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if (priv->activity_mode)
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{
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/* advance the block */
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if (priv->activity_dir == 0)
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{
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priv->activity_pos += priv->pulse_fraction;
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if (priv->activity_pos > 1.0)
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{
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priv->activity_pos = 1.0;
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priv->activity_dir = 1;
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}
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}
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else
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{
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priv->activity_pos -= priv->pulse_fraction;
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if (priv->activity_pos <= 0)
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{
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priv->activity_pos = 0;
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priv->activity_dir = 0;
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}
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}
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}
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gtk_widget_queue_draw (widget);
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}
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static void
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gtk_progress_bar_finalize (GObject *object)
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{
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GtkProgressBar *pbar = GTK_PROGRESS_BAR (object);
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GtkProgressBarPrivate *priv = pbar->priv;
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g_free (priv->text);
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G_OBJECT_CLASS (gtk_progress_bar_parent_class)->finalize (object);
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}
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static gchar *
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get_current_text (GtkProgressBar *pbar)
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{
|
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GtkProgressBarPrivate *priv = pbar->priv;
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if (priv->text)
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return g_strdup (priv->text);
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else
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return g_strdup_printf ("%.0f %%", priv->fraction * 100.0);
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}
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|
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static void
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gtk_progress_bar_get_preferred_width (GtkWidget *widget,
|
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gint *minimum,
|
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gint *natural)
|
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{
|
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GtkProgressBar *pbar;
|
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GtkProgressBarPrivate *priv;
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GtkStyleContext *style_context;
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GtkStateFlags state;
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GtkBorder padding;
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gchar *buf;
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PangoRectangle logical_rect;
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PangoLayout *layout;
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gint width;
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gint xspacing;
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gint min_width;
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g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
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style_context = gtk_widget_get_style_context (widget);
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state = gtk_widget_get_state_flags (widget);
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gtk_style_context_get_padding (style_context, state, &padding);
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gtk_widget_style_get (widget,
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"xspacing", &xspacing,
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NULL);
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pbar = GTK_PROGRESS_BAR (widget);
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priv = pbar->priv;
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width = padding.left + padding.right + xspacing;
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|
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if (priv->show_text)
|
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{
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buf = get_current_text (pbar);
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layout = gtk_widget_create_pango_layout (widget, buf);
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pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
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if (priv->ellipsize)
|
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{
|
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PangoContext *context;
|
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PangoFontMetrics *metrics;
|
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gint char_width;
|
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|
|
/* The minimum size for ellipsized text is ~ 3 chars */
|
|
context = pango_layout_get_context (layout);
|
|
metrics = pango_context_get_metrics (context,
|
|
pango_context_get_font_description (context),
|
|
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;
|
|
|
|
g_object_unref (layout);
|
|
g_free (buf);
|
|
}
|
|
|
|
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
gtk_widget_style_get (widget,
|
|
"min-horizontal-bar-width", &min_width,
|
|
NULL);
|
|
else
|
|
gtk_widget_style_get (widget,
|
|
"min-vertical-bar-width", &min_width,
|
|
NULL);
|
|
|
|
*minimum = *natural = MAX (min_width, width);
|
|
}
|
|
|
|
static void
|
|
gtk_progress_bar_get_preferred_height (GtkWidget *widget,
|
|
gint *minimum,
|
|
gint *natural)
|
|
{
|
|
GtkProgressBar *pbar;
|
|
GtkProgressBarPrivate *priv;
|
|
GtkStyleContext *context;
|
|
GtkStateFlags state;
|
|
GtkBorder padding;
|
|
gchar *buf;
|
|
PangoRectangle logical_rect;
|
|
PangoLayout *layout;
|
|
gint height;
|
|
gint yspacing;
|
|
gint min_height;
|
|
|
|
g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_widget_get_state_flags (widget);
|
|
gtk_style_context_get_padding (context, state, &padding);
|
|
|
|
gtk_widget_style_get (widget,
|
|
"yspacing", &yspacing,
|
|
NULL);
|
|
|
|
pbar = GTK_PROGRESS_BAR (widget);
|
|
priv = pbar->priv;
|
|
|
|
height = padding.top + padding.bottom + yspacing;
|
|
|
|
if (priv->show_text)
|
|
{
|
|
buf = get_current_text (pbar);
|
|
layout = gtk_widget_create_pango_layout (widget, buf);
|
|
|
|
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
|
|
|
|
height += logical_rect.height;
|
|
|
|
g_object_unref (layout);
|
|
g_free (buf);
|
|
}
|
|
|
|
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
gtk_widget_style_get (widget,
|
|
"min-horizontal-bar-height", &min_height,
|
|
NULL);
|
|
else
|
|
gtk_widget_style_get (widget,
|
|
"min-vertical-bar-height", &min_height,
|
|
NULL);
|
|
|
|
*minimum = *natural = MAX (min_height, height);
|
|
}
|
|
|
|
static void
|
|
gtk_progress_bar_act_mode_enter (GtkProgressBar *pbar)
|
|
{
|
|
GtkProgressBarPrivate *priv = pbar->priv;
|
|
GtkStyleContext *context;
|
|
GtkStateFlags state;
|
|
GtkBorder padding;
|
|
GtkWidget *widget = GTK_WIDGET (pbar);
|
|
GtkOrientation orientation;
|
|
gboolean inverted;
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_widget_get_state_flags (widget);
|
|
gtk_style_context_get_padding (context, state, &padding);
|
|
|
|
orientation = priv->orientation;
|
|
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 (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
{
|
|
if (!inverted)
|
|
{
|
|
priv->activity_pos = 0.0;
|
|
priv->activity_dir = 0;
|
|
}
|
|
else
|
|
{
|
|
priv->activity_pos = 1.0;
|
|
priv->activity_dir = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!inverted)
|
|
{
|
|
priv->activity_pos = 0.0;
|
|
priv->activity_dir = 0;
|
|
}
|
|
else
|
|
{
|
|
priv->activity_pos = 1.0;
|
|
priv->activity_dir = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_progress_bar_get_activity (GtkProgressBar *pbar,
|
|
GtkOrientation orientation,
|
|
gint *offset,
|
|
gint *amount)
|
|
{
|
|
GtkProgressBarPrivate *priv = pbar->priv;
|
|
GtkWidget *widget = GTK_WIDGET (pbar);
|
|
GtkStyleContext *context;
|
|
GtkAllocation allocation;
|
|
GtkStateFlags state;
|
|
GtkBorder padding;
|
|
int size;
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_style_context_get_state (context);
|
|
gtk_widget_get_allocation (widget, &allocation);
|
|
gtk_style_context_get_padding (context, state, &padding);
|
|
|
|
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
size = allocation.width - padding.left - padding.top;
|
|
else
|
|
size = allocation.height - padding.left - padding.top;
|
|
|
|
*amount = MAX (2, size / priv->activity_blocks);
|
|
*offset = priv->activity_pos * (size - *amount);
|
|
}
|
|
|
|
static void
|
|
gtk_progress_bar_paint_activity (GtkProgressBar *pbar,
|
|
cairo_t *cr,
|
|
GtkOrientation orientation,
|
|
gboolean inverted,
|
|
int width,
|
|
int height)
|
|
{
|
|
GtkStyleContext *context;
|
|
GtkStateFlags state;
|
|
GtkBorder padding;
|
|
GtkWidget *widget = GTK_WIDGET (pbar);
|
|
GdkRectangle area;
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_widget_get_state_flags (widget);
|
|
gtk_style_context_get_padding (context, state, &padding);
|
|
|
|
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
{
|
|
gtk_progress_bar_get_activity (pbar, orientation, &area.x, &area.width);
|
|
area.y = padding.top;
|
|
area.height = height - padding.top - padding.bottom;
|
|
}
|
|
else
|
|
{
|
|
gtk_progress_bar_get_activity (pbar, orientation, &area.y, &area.height);
|
|
area.x = padding.left;
|
|
area.width = width - padding.left - padding.right;
|
|
}
|
|
|
|
gtk_style_context_save (context);
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_PROGRESSBAR);
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_PULSE);
|
|
|
|
gtk_render_activity (context, cr, area.x, area.y, area.width, area.height);
|
|
|
|
gtk_style_context_restore (context);
|
|
}
|
|
|
|
static void
|
|
gtk_progress_bar_paint_continuous (GtkProgressBar *pbar,
|
|
cairo_t *cr,
|
|
gint amount,
|
|
GtkOrientation orientation,
|
|
gboolean inverted,
|
|
int width,
|
|
int height)
|
|
{
|
|
GtkStyleContext *context;
|
|
GtkStateFlags state;
|
|
GtkBorder padding;
|
|
GtkWidget *widget = GTK_WIDGET (pbar);
|
|
GdkRectangle area;
|
|
|
|
if (amount <= 0)
|
|
return;
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_widget_get_state_flags (widget);
|
|
gtk_style_context_get_padding (context, state, &padding);
|
|
|
|
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
{
|
|
area.width = amount;
|
|
area.height = height - padding.top - padding.bottom;
|
|
area.y = padding.top;
|
|
|
|
if (!inverted)
|
|
area.x = padding.left;
|
|
else
|
|
area.x = width - amount - padding.right;
|
|
}
|
|
else
|
|
{
|
|
area.width = width - padding.left - padding.right;
|
|
area.height = amount;
|
|
area.x = padding.left;
|
|
|
|
if (!inverted)
|
|
area.y = padding.top;
|
|
else
|
|
area.y = height - amount - padding.bottom;
|
|
}
|
|
|
|
gtk_style_context_save (context);
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_PROGRESSBAR);
|
|
|
|
gtk_render_activity (context, cr, area.x, area.y, area.width, area.height);
|
|
|
|
gtk_style_context_restore (context);
|
|
}
|
|
|
|
static void
|
|
gtk_progress_bar_paint_text (GtkProgressBar *pbar,
|
|
cairo_t *cr,
|
|
gint offset,
|
|
gint amount,
|
|
GtkOrientation orientation,
|
|
gboolean inverted,
|
|
int width,
|
|
int height)
|
|
{
|
|
GtkProgressBarPrivate *priv = pbar->priv;
|
|
GtkStyleContext *context;
|
|
GtkStateFlags state;
|
|
GtkBorder padding;
|
|
GtkWidget *widget = GTK_WIDGET (pbar);
|
|
gint x;
|
|
gint y;
|
|
gchar *buf;
|
|
GdkRectangle rect;
|
|
PangoLayout *layout;
|
|
PangoRectangle logical_rect;
|
|
GdkRectangle prelight_clip, start_clip, end_clip;
|
|
gfloat text_xalign = 0.5;
|
|
gfloat text_yalign = 0.5;
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_widget_get_state_flags (widget);
|
|
gtk_style_context_get_padding (context, state, &padding);
|
|
|
|
if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
|
|
text_xalign = 1.0 - text_xalign;
|
|
|
|
buf = get_current_text (pbar);
|
|
|
|
layout = gtk_widget_create_pango_layout (widget, buf);
|
|
pango_layout_set_ellipsize (layout, priv->ellipsize);
|
|
if (priv->ellipsize)
|
|
pango_layout_set_width (layout, width * PANGO_SCALE);
|
|
|
|
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
|
|
|
|
x = padding.left + 1 + text_xalign * (width - padding.left - padding.right - 2 - logical_rect.width);
|
|
y = padding.top + 1 + text_yalign * (height - padding.top - padding.bottom - 2 - logical_rect.height);
|
|
|
|
rect.x = padding.left;
|
|
rect.y = padding.top;
|
|
rect.width = width - padding.left - padding.right;
|
|
rect.height = height - padding.top - padding.bottom;
|
|
|
|
prelight_clip = start_clip = end_clip = rect;
|
|
|
|
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
{
|
|
if (!inverted)
|
|
{
|
|
if (offset != -1)
|
|
prelight_clip.x = offset;
|
|
prelight_clip.width = amount;
|
|
start_clip.width = prelight_clip.x - start_clip.x;
|
|
end_clip.x = start_clip.x + start_clip.width + prelight_clip.width;
|
|
end_clip.width -= prelight_clip.width + start_clip.width;
|
|
}
|
|
else
|
|
{
|
|
if (offset != -1)
|
|
prelight_clip.x = offset;
|
|
else
|
|
prelight_clip.x = rect.x + rect.width - amount;
|
|
prelight_clip.width = amount;
|
|
start_clip.width = prelight_clip.x - start_clip.x;
|
|
end_clip.x = start_clip.x + start_clip.width + prelight_clip.width;
|
|
end_clip.width -= prelight_clip.width + start_clip.width;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!inverted)
|
|
{
|
|
if (offset != -1)
|
|
prelight_clip.y = offset;
|
|
prelight_clip.height = amount;
|
|
start_clip.height = prelight_clip.y - start_clip.y;
|
|
end_clip.y = start_clip.y + start_clip.height + prelight_clip.height;
|
|
end_clip.height -= prelight_clip.height + start_clip.height;
|
|
}
|
|
else
|
|
{
|
|
if (offset != -1)
|
|
prelight_clip.y = offset;
|
|
else
|
|
prelight_clip.y = rect.y + rect.height - amount;
|
|
prelight_clip.height = amount;
|
|
start_clip.height = prelight_clip.y - start_clip.y;
|
|
end_clip.y = start_clip.y + start_clip.height + prelight_clip.height;
|
|
end_clip.height -= prelight_clip.height + start_clip.height;
|
|
}
|
|
}
|
|
|
|
gtk_style_context_save (context);
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_TROUGH);
|
|
|
|
if (start_clip.width > 0 && start_clip.height > 0)
|
|
{
|
|
cairo_save (cr);
|
|
gdk_cairo_rectangle (cr, &start_clip);
|
|
cairo_clip (cr);
|
|
|
|
gtk_render_layout (context, cr, x, y, layout);
|
|
cairo_restore (cr);
|
|
}
|
|
|
|
if (end_clip.width > 0 && end_clip.height > 0)
|
|
{
|
|
cairo_save (cr);
|
|
gdk_cairo_rectangle (cr, &end_clip);
|
|
cairo_clip (cr);
|
|
|
|
gtk_render_layout (context, cr, x, y, layout);
|
|
cairo_restore (cr);
|
|
}
|
|
|
|
gtk_style_context_restore (context);
|
|
|
|
cairo_save (cr);
|
|
gdk_cairo_rectangle (cr, &prelight_clip);
|
|
cairo_clip (cr);
|
|
|
|
gtk_style_context_save (context);
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_PROGRESSBAR);
|
|
|
|
gtk_render_layout (context, cr, x, y, layout);
|
|
|
|
gtk_style_context_restore (context);
|
|
cairo_restore (cr);
|
|
|
|
g_object_unref (layout);
|
|
g_free (buf);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_progress_bar_draw (GtkWidget *widget,
|
|
cairo_t *cr)
|
|
{
|
|
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
|
|
GtkProgressBarPrivate *priv = pbar->priv;
|
|
GtkOrientation orientation;
|
|
gboolean inverted;
|
|
GtkStyleContext *context;
|
|
GtkStateFlags state;
|
|
GtkBorder padding;
|
|
int width, height;
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_widget_get_state_flags (widget);
|
|
gtk_style_context_get_padding (context, state, &padding);
|
|
|
|
orientation = priv->orientation;
|
|
inverted = priv->inverted;
|
|
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
|
|
{
|
|
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
inverted = !inverted;
|
|
}
|
|
width = gtk_widget_get_allocated_width (widget);
|
|
height = gtk_widget_get_allocated_height (widget);
|
|
|
|
gtk_style_context_save (context);
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_TROUGH);
|
|
|
|
gtk_render_background (context, cr, 0, 0, width, height);
|
|
gtk_render_frame (context, cr, 0, 0, width, height);
|
|
|
|
gtk_style_context_restore (context);
|
|
|
|
if (priv->activity_mode)
|
|
{
|
|
gtk_progress_bar_paint_activity (pbar, cr,
|
|
orientation, inverted,
|
|
width, height);
|
|
|
|
if (priv->show_text)
|
|
{
|
|
gint offset;
|
|
gint amount;
|
|
|
|
gtk_progress_bar_get_activity (pbar, orientation, &offset, &amount);
|
|
gtk_progress_bar_paint_text (pbar, cr,
|
|
offset, amount,
|
|
orientation, inverted,
|
|
width, height);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gint amount;
|
|
gint space;
|
|
|
|
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
space = width - padding.left - padding.right;
|
|
else
|
|
space = height - padding.top - padding.bottom;
|
|
|
|
amount = space * gtk_progress_bar_get_fraction (pbar);
|
|
|
|
gtk_progress_bar_paint_continuous (pbar, cr, amount, orientation, inverted, width, height);
|
|
|
|
if (priv->show_text)
|
|
gtk_progress_bar_paint_text (pbar, cr, -1, amount, orientation, inverted, width, height);
|
|
}
|
|
|
|
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);
|
|
|
|
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_progress_bar_real_update (pbar);
|
|
|
|
g_object_notify (G_OBJECT (pbar), "fraction");
|
|
}
|
|
|
|
/**
|
|
* 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_real_update (pbar);
|
|
}
|
|
|
|
/**
|
|
* gtk_progress_bar_set_text:
|
|
* @pbar: a #GtkProgressBar
|
|
* @text: (allow-none): a UTF-8 string, or %NULL
|
|
*
|
|
* Causes the given @text to appear superimposed on 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 (G_OBJECT (pbar), "text");
|
|
}
|
|
|
|
/**
|
|
* gtk_progress_bar_set_show_text:
|
|
* @pbar: a #GtkProgressBar
|
|
* @show_text: whether to show superimposed text
|
|
*
|
|
* Sets whether the progress bar will show text superimposed
|
|
* over 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)
|
|
{
|
|
priv->show_text = show_text;
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (pbar));
|
|
|
|
g_object_notify (G_OBJECT (pbar), "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 (G_OBJECT (pbar), "pulse-step");
|
|
}
|
|
|
|
static void
|
|
gtk_progress_bar_set_orientation (GtkProgressBar *pbar,
|
|
GtkOrientation orientation)
|
|
{
|
|
GtkProgressBarPrivate *priv = pbar->priv;
|
|
|
|
if (priv->orientation != orientation)
|
|
{
|
|
priv->orientation = orientation;
|
|
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (pbar));
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (pbar));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
priv->inverted = inverted;
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (pbar));
|
|
|
|
g_object_notify (G_OBJECT (pbar), "inverted");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
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.
|
|
*
|
|
* 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 pbar->priv->fraction;
|
|
}
|
|
|
|
/**
|
|
* 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->priv->pulse_fraction;
|
|
}
|
|
|
|
/**
|
|
* gtk_progress_bar_get_inverted:
|
|
* @pbar: a #GtkProgressBar
|
|
*
|
|
* Gets the value set by gtk_progress_bar_set_inverted().
|
|
*
|
|
* Return value: %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 (G_OBJECT (pbar), "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().
|
|
*
|
|
* 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->priv->ellipsize;
|
|
}
|