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gtk2/gtk/gtkprogressbar.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <string.h>
#include "gtkprogressbar.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#define MIN_HORIZONTAL_BAR_WIDTH 150
#define MIN_HORIZONTAL_BAR_HEIGHT 20
#define MIN_VERTICAL_BAR_WIDTH 22
#define MIN_VERTICAL_BAR_HEIGHT 80
struct _GtkProgressBarPriv
{
GtkProgressBarOrientation orientation;
GdkPixmap *offscreen_pixmap;
gchar *text;
gdouble fraction;
gdouble pulse_fraction;
guint blocks;
gint in_block;
gint activity_pos;
guint activity_blocks;
guint activity_step;
guint activity_dir : 1;
guint activity_mode : 1;
guint dirty : 1;
guint ellipsize : 3;
guint show_text : 1;
};
enum {
PROP_0,
PROP_FRACTION,
PROP_PULSE_STEP,
PROP_ORIENTATION,
PROP_TEXT,
PROP_SHOW_TEXT,
PROP_ELLIPSIZE
};
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 gboolean gtk_progress_bar_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_progress_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_progress_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_progress_bar_style_set (GtkWidget *widget,
GtkStyle *previous);
static void gtk_progress_bar_real_update (GtkProgressBar *progress);
static void gtk_progress_bar_paint (GtkProgressBar *progress);
static void gtk_progress_bar_act_mode_enter (GtkProgressBar *progress);
static void gtk_progress_bar_realize (GtkWidget *widget);
static void gtk_progress_bar_finalize (GObject *object);
static void gtk_progress_bar_create_pixmap (GtkProgressBar *pbar);
G_DEFINE_TYPE (GtkProgressBar, gtk_progress_bar, GTK_TYPE_WIDGET)
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->realize = gtk_progress_bar_realize;
widget_class->expose_event = gtk_progress_bar_expose;
widget_class->size_request = gtk_progress_bar_size_request;
widget_class->size_allocate = gtk_progress_bar_size_allocate;
widget_class->style_set = gtk_progress_bar_style_set;
class->paint = gtk_progress_bar_paint;
class->update = gtk_progress_bar_real_update;
class->act_mode_enter = gtk_progress_bar_act_mode_enter;
g_object_class_install_property (gobject_class,
PROP_ORIENTATION,
g_param_spec_enum ("orientation",
P_("Orientation"),
P_("Orientation and growth direction of the progress bar"),
GTK_TYPE_PROGRESS_BAR_ORIENTATION,
GTK_PROGRESS_LEFT_TO_RIGHT,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_FRACTION,
g_param_spec_double ("fraction",
P_("Fraction"),
P_("The fraction of total work that has been completed"),
0.0, 1.0, 0.0,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PULSE_STEP,
g_param_spec_double ("pulse-step",
P_("Pulse Step"),
P_("The fraction of total progress to move the bouncing block when pulsed"),
0.0, 1.0, 0.1,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_TEXT,
g_param_spec_string ("text",
P_("Text"),
P_("Text to be displayed in the progress bar"),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_SHOW_TEXT,
g_param_spec_boolean ("show-text",
P_("Show text"),
P_("Whether the progress is shown as text."),
FALSE,
GTK_PARAM_READWRITE));
/**
* GtkProgressBar:ellipsize:
*
* The preferred place to ellipsize the string, if the progressbar does
* not have enough room to display the entire string, specified as a
* #PangoEllisizeMode.
*
* Note that setting this property to a value other than
* %PANGO_ELLIPSIZE_NONE has the side-effect that the progressbar requests
* only enough space to display the ellipsis "...". Another means to set a
* progressbar's width is gtk_widget_set_size_request().
*
* Since: 2.6
*/
g_object_class_install_property (gobject_class,
PROP_ELLIPSIZE,
g_param_spec_enum ("ellipsize",
P_("Ellipsize"),
P_("The preferred place to ellipsize the string, if the 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));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("xspacing",
P_("XSpacing"),
P_("Extra spacing applied to the width of a progress bar."),
0, G_MAXINT, 7,
G_PARAM_READWRITE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("yspacing",
P_("YSpacing"),
P_("Extra spacing applied to the height of a progress bar."),
0, G_MAXINT, 7,
G_PARAM_READWRITE));
/**
* GtkProgressBar:min-horizontal-bar-width:
*
* The minimum horizontal width of the progress bar.
*
* Since: 2.14
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-horizontal-bar-width",
P_("Min horizontal bar width"),
P_("The minimum horizontal width of the progress bar"),
1, G_MAXINT, MIN_HORIZONTAL_BAR_WIDTH,
G_PARAM_READWRITE));
/**
* GtkProgressBar:min-horizontal-bar-height:
*
* Minimum horizontal height of the progress bar.
*
* Since: 2.14
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-horizontal-bar-height",
P_("Min horizontal bar height"),
P_("Minimum horizontal height of the progress bar"),
1, G_MAXINT, MIN_HORIZONTAL_BAR_HEIGHT,
G_PARAM_READWRITE));
/**
* GtkProgressBar:min-vertical-bar-width:
*
* The minimum vertical width of the progress bar.
*
* Since: 2.14
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-vertical-bar-width",
P_("Min vertical bar width"),
P_("The minimum vertical width of the progress bar"),
1, G_MAXINT, MIN_VERTICAL_BAR_WIDTH,
G_PARAM_READWRITE));
/**
* GtkProgressBar:min-vertical-bar-height:
*
* The minimum vertical height of the progress bar.
*
* Since: 2.14
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("min-vertical-bar-height",
P_("Min vertical bar height"),
P_("The minimum vertical height of the progress bar"),
1, G_MAXINT, MIN_VERTICAL_BAR_HEIGHT,
G_PARAM_READWRITE));
g_type_class_add_private (class, sizeof (GtkProgressBarPriv));
}
static void
gtk_progress_bar_init (GtkProgressBar *pbar)
{
GtkProgressBarPriv *priv;
pbar->priv = G_TYPE_INSTANCE_GET_PRIVATE (pbar,
GTK_TYPE_PROGRESS_BAR,
GtkProgressBarPriv);
priv = pbar->priv;
priv->blocks = 10;
priv->in_block = -1;
priv->orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
priv->pulse_fraction = 0.1;
priv->activity_pos = 0;
priv->activity_dir = 1;
priv->activity_step = 3;
priv->activity_blocks = 5;
priv->ellipsize = PANGO_ELLIPSIZE_NONE;
priv->show_text = FALSE;
priv->text = NULL;
priv->fraction = 0.0;
}
static void
gtk_progress_bar_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
gtk_widget_set_realized (widget, TRUE);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
gtk_progress_bar_create_pixmap (GTK_PROGRESS_BAR (widget));
}
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_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);
GtkProgressBarPriv* priv = pbar->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, priv->orientation);
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;
}
}
GtkWidget*
gtk_progress_bar_new (void)
{
GtkWidget *pbar;
pbar = g_object_new (GTK_TYPE_PROGRESS_BAR, NULL);
return pbar;
}
static void
gtk_progress_bar_real_update (GtkProgressBar *pbar)
{
GtkProgressBarPriv *priv;
GtkWidget *widget;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
widget = GTK_WIDGET (pbar);
if (priv->activity_mode)
{
guint size;
/* advance the block */
if (priv->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
priv->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
{
/* Update our activity step. */
priv->activity_step = widget->allocation.width * priv->pulse_fraction;
size = MAX (2, widget->allocation.width / priv->activity_blocks);
if (priv->activity_dir == 0)
{
priv->activity_pos += priv->activity_step;
if (priv->activity_pos + size >= widget->allocation.width - widget->style->xthickness)
{
priv->activity_pos = widget->allocation.width -
widget->style->xthickness - size;
priv->activity_dir = 1;
}
}
else
{
priv->activity_pos -= priv->activity_step;
if (priv->activity_pos <= widget->style->xthickness)
{
priv->activity_pos = widget->style->xthickness;
priv->activity_dir = 0;
}
}
}
else
{
/* Update our activity step. */
priv->activity_step = widget->allocation.height * priv->pulse_fraction;
size = MAX (2, widget->allocation.height / priv->activity_blocks);
if (priv->activity_dir == 0)
{
priv->activity_pos += priv->activity_step;
if (priv->activity_pos + size >= widget->allocation.height - widget->style->ythickness)
{
priv->activity_pos = widget->allocation.height -
widget->style->ythickness - size;
priv->activity_dir = 1;
}
}
else
{
priv->activity_pos -= priv->activity_step;
if (priv->activity_pos <= widget->style->ythickness)
{
priv->activity_pos = widget->style->ythickness;
priv->activity_dir = 0;
}
}
}
}
priv->dirty = TRUE;
gtk_widget_queue_draw (widget);
}
static void
gtk_progress_bar_finalize (GObject *object)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (object);
GtkProgressBarPriv *priv = pbar->priv;
if (priv->offscreen_pixmap)
g_object_unref (priv->offscreen_pixmap);
g_free (priv->text);
G_OBJECT_CLASS (gtk_progress_bar_parent_class)->finalize (object);
}
static gboolean
gtk_progress_bar_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
GtkProgressBarPriv *priv = pbar->priv;
if (gtk_widget_is_drawable (widget))
{
if (priv->dirty)
gtk_progress_bar_paint (pbar);
gdk_draw_drawable (widget->window,
widget->style->black_gc,
priv->offscreen_pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width,
event->area.height);
}
return FALSE;
}
static gchar *
get_current_text (GtkProgressBar *pbar)
{
GtkProgressBarPriv *priv = pbar->priv;
if (priv->text)
return g_strdup (priv->text);
else
return g_strdup_printf ("%.0f %%", priv->fraction * 100.0);
}
static void
gtk_progress_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkProgressBar *pbar;
GtkProgressBarPriv *priv;
gchar *buf;
PangoRectangle logical_rect;
PangoLayout *layout;
gint width, height;
gint xspacing, yspacing;
gint min_width, min_height;
g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
g_return_if_fail (requisition != NULL);
gtk_widget_style_get (widget,
"xspacing", &xspacing,
"yspacing", &yspacing,
NULL);
pbar = GTK_PROGRESS_BAR (widget);
priv = pbar->priv;
width = 2 * widget->style->xthickness + xspacing;
height = 2 * widget->style->ythickness + 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);
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, widget->style->font_desc, pango_context_get_language (context));
char_width = pango_font_metrics_get_approximate_char_width (metrics);
pango_font_metrics_unref (metrics);
width += PANGO_PIXELS (char_width) * 3;
}
else
width += logical_rect.width;
height += logical_rect.height;
g_object_unref (layout);
g_free (buf);
}
if (priv->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
priv->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
gtk_widget_style_get (widget,
"min-horizontal-bar-width", &min_width,
"min-horizontal-bar-height", &min_height,
NULL);
else
gtk_widget_style_get (widget,
"min-vertical-bar-width", &min_width,
"min-vertical-bar-height", &min_height,
NULL);
requisition->width = MAX (min_width, width);
requisition->height = MAX (min_height, height);
}
static void
gtk_progress_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
widget->allocation = *allocation;
if (gtk_widget_get_realized (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gtk_progress_bar_create_pixmap (GTK_PROGRESS_BAR (widget));
}
}
static void
gtk_progress_bar_create_pixmap (GtkProgressBar *pbar)
{
GtkProgressBarPriv *priv = pbar->priv;
GtkWidget *widget = GTK_WIDGET (pbar);
if (gtk_widget_get_realized (widget))
{
if (priv->offscreen_pixmap)
g_object_unref (priv->offscreen_pixmap);
priv->offscreen_pixmap = gdk_pixmap_new (widget->window,
widget->allocation.width,
widget->allocation.height,
-1);
/* clear the pixmap for transparent themes */
gtk_paint_flat_box (widget->style,
priv->offscreen_pixmap,
GTK_STATE_NORMAL,
GTK_SHADOW_NONE,
NULL, widget, "trough", 0, 0, -1, -1);
GTK_PROGRESS_BAR_GET_CLASS (pbar)->paint (pbar);
}
}
static void
gtk_progress_bar_style_set (GtkWidget *widget,
GtkStyle *previous)
{
GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget);
GtkProgressBarPriv *priv = pbar->priv;
priv->dirty = TRUE;
GTK_WIDGET_CLASS (gtk_progress_bar_parent_class)->style_set (widget, previous);
}
static void
gtk_progress_bar_act_mode_enter (GtkProgressBar *pbar)
{
GtkProgressBarPriv *priv = pbar->priv;
GtkWidget *widget = GTK_WIDGET (pbar);
GtkProgressBarOrientation orientation;
orientation = priv->orientation;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
if (priv->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
else if (priv->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
}
/* calculate start pos */
if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
{
if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
{
priv->activity_pos = widget->style->xthickness;
priv->activity_dir = 0;
}
else
{
priv->activity_pos = widget->allocation.width -
widget->style->xthickness - (widget->allocation.height -
widget->style->ythickness * 2);
priv->activity_dir = 1;
}
}
else
{
if (orientation == GTK_PROGRESS_TOP_TO_BOTTOM)
{
priv->activity_pos = widget->style->ythickness;
priv->activity_dir = 0;
}
else
{
priv->activity_pos = widget->allocation.height -
widget->style->ythickness - (widget->allocation.width -
widget->style->xthickness * 2);
priv->activity_dir = 1;
}
}
}
static void
gtk_progress_bar_get_activity (GtkProgressBar *pbar,
GtkProgressBarOrientation orientation,
gint *offset,
gint *amount)
{
GtkProgressBarPriv *priv = pbar->priv;
GtkWidget *widget = GTK_WIDGET (pbar);
*offset = priv->activity_pos;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
case GTK_PROGRESS_RIGHT_TO_LEFT:
*amount = MAX (2, widget->allocation.width / priv->activity_blocks);
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
case GTK_PROGRESS_BOTTOM_TO_TOP:
*amount = MAX (2, widget->allocation.height / priv->activity_blocks);
break;
}
}
static void
gtk_progress_bar_paint_activity (GtkProgressBar *pbar,
GtkProgressBarOrientation orientation)
{
GtkProgressBarPriv *priv = pbar->priv;
GtkWidget *widget = GTK_WIDGET (pbar);
GdkRectangle area;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
case GTK_PROGRESS_RIGHT_TO_LEFT:
gtk_progress_bar_get_activity (pbar, orientation, &area.x, &area.width);
area.y = widget->style->ythickness;
area.height = widget->allocation.height - 2 * widget->style->ythickness;
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
case GTK_PROGRESS_BOTTOM_TO_TOP:
gtk_progress_bar_get_activity (pbar, orientation, &area.y, &area.height);
area.x = widget->style->xthickness;
area.width = widget->allocation.width - 2 * widget->style->xthickness;
break;
default:
return;
break;
}
gtk_paint_box (widget->style,
priv->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
&area, widget, "bar",
area.x, area.y, area.width, area.height);
}
static void
gtk_progress_bar_paint_continuous (GtkProgressBar *pbar,
gint amount,
GtkProgressBarOrientation orientation)
{
GtkProgressBarPriv *priv = pbar->priv;
GtkWidget *widget = GTK_WIDGET (pbar);
GdkRectangle area;
if (amount <= 0)
return;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
case GTK_PROGRESS_RIGHT_TO_LEFT:
area.width = amount;
area.height = widget->allocation.height - widget->style->ythickness * 2;
area.y = widget->style->ythickness;
area.x = widget->style->xthickness;
if (orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
area.x = widget->allocation.width - amount - area.x;
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
case GTK_PROGRESS_BOTTOM_TO_TOP:
area.width = widget->allocation.width - widget->style->xthickness * 2;
area.height = amount;
area.x = widget->style->xthickness;
area.y = widget->style->ythickness;
if (orientation == GTK_PROGRESS_BOTTOM_TO_TOP)
area.y = widget->allocation.height - amount - area.y;
break;
default:
return;
break;
}
gtk_paint_box (widget->style,
priv->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
&area, widget, "bar",
area.x, area.y, area.width, area.height);
}
static void
gtk_progress_bar_paint_text (GtkProgressBar *pbar,
gint offset,
gint amount,
GtkProgressBarOrientation orientation)
{
GtkProgressBarPriv *priv = pbar->priv;
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;
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, widget->allocation.width * PANGO_SCALE);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
x = widget->style->xthickness + 1 + text_xalign *
(widget->allocation.width - 2 * widget->style->xthickness -
2 - logical_rect.width);
y = widget->style->ythickness + 1 + text_yalign *
(widget->allocation.height - 2 * widget->style->ythickness -
2 - logical_rect.height);
rect.x = widget->style->xthickness;
rect.y = widget->style->ythickness;
rect.width = widget->allocation.width - 2 * widget->style->xthickness;
rect.height = widget->allocation.height - 2 * widget->style->ythickness;
prelight_clip = start_clip = end_clip = rect;
switch (orientation)
{
case GTK_PROGRESS_LEFT_TO_RIGHT:
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;
break;
case GTK_PROGRESS_RIGHT_TO_LEFT:
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;
break;
case GTK_PROGRESS_TOP_TO_BOTTOM:
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;
break;
case GTK_PROGRESS_BOTTOM_TO_TOP:
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;
break;
}
if (start_clip.width > 0 && start_clip.height > 0)
gtk_paint_layout (widget->style,
priv->offscreen_pixmap,
GTK_STATE_NORMAL,
FALSE,
&start_clip,
widget,
"progressbar",
x, y,
layout);
if (end_clip.width > 0 && end_clip.height > 0)
gtk_paint_layout (widget->style,
priv->offscreen_pixmap,
GTK_STATE_NORMAL,
FALSE,
&end_clip,
widget,
"progressbar",
x, y,
layout);
gtk_paint_layout (widget->style,
priv->offscreen_pixmap,
GTK_STATE_PRELIGHT,
FALSE,
&prelight_clip,
widget,
"progressbar",
x, y,
layout);
g_object_unref (layout);
g_free (buf);
}
static void
gtk_progress_bar_paint (GtkProgressBar *pbar)
{
GtkProgressBarPriv *priv = pbar->priv;
GtkWidget *widget = GTK_WIDGET (pbar);
GtkProgressBarOrientation orientation;
orientation = priv->orientation;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
if (priv->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
else if (priv->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
}
if (priv->offscreen_pixmap)
{
gtk_paint_box (widget->style,
priv->offscreen_pixmap,
GTK_STATE_NORMAL, GTK_SHADOW_IN,
NULL, widget, "trough",
0, 0,
widget->allocation.width,
widget->allocation.height);
if (priv->activity_mode)
{
gtk_progress_bar_paint_activity (pbar, orientation);
if (priv->show_text)
{
gint offset;
gint amount;
gtk_progress_bar_get_activity (pbar, orientation, &offset, &amount);
gtk_progress_bar_paint_text (pbar, offset, amount, orientation);
}
}
else
{
gint amount;
gint space;
if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
space = widget->allocation.width - 2 * widget->style->xthickness;
else
space = widget->allocation.height - 2 * widget->style->ythickness;
amount = space * gtk_progress_bar_get_fraction (pbar);
gtk_progress_bar_paint_continuous (pbar, amount, orientation);
if (priv->show_text)
gtk_progress_bar_paint_text (pbar, -1, amount, orientation);
}
priv->dirty = FALSE;
}
}
static void
gtk_progress_bar_set_activity_mode (GtkProgressBar *pbar,
gboolean activity_mode)
{
GtkProgressBarPriv *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_GET_CLASS (pbar)->act_mode_enter (pbar);
if (gtk_widget_is_drawable (GTK_WIDGET (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)
{
GtkProgressBarPriv* priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
priv->fraction = fraction;
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 is made, but you don't know how much.
* Causes the progress bar to enter "activity mode," where a block
* bounces back and forth. Each call to gtk_progress_bar_pulse()
* causes the block to move by a little bit (the amount of movement
* per pulse is determined by gtk_progress_bar_set_pulse_step()).
**/
void
gtk_progress_bar_pulse (GtkProgressBar *pbar)
{
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
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.
**/
void
gtk_progress_bar_set_text (GtkProgressBar *pbar,
const gchar *text)
{
GtkProgressBarPriv *priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
g_free (priv->text);
priv->text = text && *text ? g_strdup (text) : NULL;
if (gtk_widget_is_drawable (GTK_WIDGET (pbar)))
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 progressbar 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.
*
* Since: 3.0
*/
void
gtk_progress_bar_set_show_text (GtkProgressBar *pbar,
gboolean show_text)
{
GtkProgressBarPriv *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;
if (gtk_widget_is_drawable (GTK_WIDGET (pbar)))
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)
{
GtkProgressBarPriv *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");
}
/**
* gtk_progress_bar_set_orientation:
* @pbar: a #GtkProgressBar
* @orientation: orientation of the progress bar
*
* Causes the progress bar to switch to a different orientation
* (left-to-right, right-to-left, top-to-bottom, or bottom-to-top).
**/
void
gtk_progress_bar_set_orientation (GtkProgressBar *pbar,
GtkProgressBarOrientation orientation)
{
GtkProgressBarPriv *priv;
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
priv = pbar->priv;
if (priv->orientation != orientation)
{
priv->orientation = orientation;
if (gtk_widget_is_drawable (GTK_WIDGET (pbar)))
gtk_widget_queue_resize (GTK_WIDGET (pbar));
g_object_notify (G_OBJECT (pbar), "orientation");
}
}
/**
* gtk_progress_bar_get_text:
* @pbar: a #GtkProgressBar
*
* Retrieves the text displayed superimposed on the progress bar,
* if any, otherwise %NULL. The return value is a reference
* to the text, not a copy of it, so will become invalid
* if you change the text in the progress bar.
*
* Return value: text, or %NULL; this string is owned by the widget
* and should not be modified or freed.
**/
G_CONST_RETURN gchar*
gtk_progress_bar_get_text (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL);
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_orientation:
* @pbar: a #GtkProgressBar
*
* Retrieves the current progress bar orientation.
*
* Return value: orientation of the progress bar
**/
GtkProgressBarOrientation
gtk_progress_bar_get_orientation (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
return pbar->priv->orientation;
}
/**
* 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)
{
GtkProgressBarPriv *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 progressbar.
* See gtk_progress_bar_set_ellipsize().
*
* Return value: #PangoEllipsizeMode
*
* Since: 2.6
**/
PangoEllipsizeMode
gtk_progress_bar_get_ellipsize (GtkProgressBar *pbar)
{
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), PANGO_ELLIPSIZE_NONE);
return pbar->priv->ellipsize;
}
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