/* gtkcellrendererprogress.c
* Copyright ( C ) 2002 Naba Kumar < kh_naba @ users . sourceforge . net >
* heavily modified by J ö rgen Scheibengruber < mfcn @ gmx . de >
* heavily modified by Marco Pesenti Gritti < marco @ gnome . org >
*
* This library is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details .
*
* You should have received a copy of the GNU Library General Public
* License along with this library . If not , see < http : //www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK + Team and others 1997 - 2007 . 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 <stdlib.h>
#include "gtkcellrendererprogress.h"
#include <glib/gi18n-lib.h>
#include "gtkorientable.h"
#include "gtkprivate.h"
#include "deprecated/gtkrender.h"
#include "gtkstylecontext.h"
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
/**
* GtkCellRendererProgress :
*
* Renders numbers as progress bars
*
* ` GtkCellRendererProgress ` renders a numeric value as a progress par in a cell .
* Additionally , it can display a text on top of the progress bar .
*
* Deprecated : 4 . 10 : List views use widgets to display their contents .
* You should use [ class @ Gtk . ProgressBar ] instead
*/
enum
{
PROP_0,
PROP_VALUE,
PROP_TEXT,
PROP_PULSE,
PROP_TEXT_XALIGN,
PROP_TEXT_YALIGN,
PROP_INVERTED,
/* GtkOrientable */
PROP_ORIENTATION,
N_PROPS
};
static GParamSpec *props[N_PROPS] = { NULL, };
typedef struct _GtkCellRendererProgressClass GtkCellRendererProgressClass;
typedef struct _GtkCellRendererProgressPrivate GtkCellRendererProgressPrivate;
struct _GtkCellRendererProgress
{
GtkCellRenderer parent_instance;
};
struct _GtkCellRendererProgressClass
{
GtkCellRendererClass parent_class;
};
struct _GtkCellRendererProgressPrivate
{
int value;
char *text;
char *label;
int min_h;
int min_w;
int pulse;
int offset;
float text_xalign;
float text_yalign;
GtkOrientation orientation;
gboolean inverted;
};
static void gtk_cell_renderer_progress_finalize (GObject *object);
static void gtk_cell_renderer_progress_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_progress_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_progress_set_value (GtkCellRendererProgress *cellprogress,
int value);
static void gtk_cell_renderer_progress_set_text (GtkCellRendererProgress *cellprogress,
const char *text);
static void gtk_cell_renderer_progress_set_pulse (GtkCellRendererProgress *cellprogress,
int pulse);
static void compute_dimensions (GtkCellRenderer *cell,
GtkWidget *widget,
const char *text,
int *width,
int *height);
static void gtk_cell_renderer_progress_snapshot (GtkCellRenderer *cell,
GtkSnapshot *snapshot,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
G_DEFINE_TYPE_WITH_CODE (GtkCellRendererProgress, gtk_cell_renderer_progress, GTK_TYPE_CELL_RENDERER,
G_ADD_PRIVATE (GtkCellRendererProgress)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL))
static void
recompute_label (GtkCellRendererProgress *cellprogress)
{
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
char *label;
if (priv->text)
label = g_strdup (priv->text);
else if (priv->pulse < 0 )
label = g_strdup_printf (C_("progress bar label" , "%d %%" ), priv->value);
else
label = NULL;
g_free (priv->label);
priv->label = label;
}
static void
gtk_cell_renderer_progress_set_value (GtkCellRendererProgress *cellprogress,
int value)
{
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
if (priv->value != value)
{
priv->value = value;
recompute_label (cellprogress);
g_object_notify_by_pspec (G_OBJECT (cellprogress), props[PROP_VALUE]);
}
}
static void
gtk_cell_renderer_progress_set_text (GtkCellRendererProgress *cellprogress,
const char *text)
{
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
char *new_text;
new_text = g_strdup (text);
g_free (priv->text);
priv->text = new_text;
recompute_label (cellprogress);
g_object_notify_by_pspec (G_OBJECT (cellprogress), props[PROP_TEXT]);
}
static void
gtk_cell_renderer_progress_set_pulse (GtkCellRendererProgress *cellprogress,
int pulse)
{
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
if (pulse != priv->pulse)
{
if (pulse <= 0 )
priv->offset = 0 ;
else
priv->offset = pulse;
g_object_notify_by_pspec (G_OBJECT (cellprogress), props[PROP_PULSE]);
}
priv->pulse = pulse;
recompute_label (cellprogress);
}
static void
gtk_cell_renderer_progress_finalize (GObject *object)
{
GtkCellRendererProgress *cellprogress = GTK_CELL_RENDERER_PROGRESS (object);
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
g_free (priv->text);
g_free (priv->label);
G_OBJECT_CLASS (gtk_cell_renderer_progress_parent_class)->finalize (object);
}
static void
gtk_cell_renderer_progress_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellRendererProgress *cellprogress = GTK_CELL_RENDERER_PROGRESS (object);
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
switch (param_id)
{
case PROP_VALUE:
g_value_set_int (value, priv->value);
break ;
case PROP_TEXT:
g_value_set_string (value, priv->text);
break ;
case PROP_PULSE:
g_value_set_int (value, priv->pulse);
break ;
case PROP_TEXT_XALIGN:
g_value_set_float (value, priv->text_xalign);
break ;
case PROP_TEXT_YALIGN:
g_value_set_float (value, priv->text_yalign);
break ;
case PROP_ORIENTATION:
g_value_set_enum (value, priv->orientation);
break ;
case PROP_INVERTED:
g_value_set_boolean (value, priv->inverted);
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
}
static void
gtk_cell_renderer_progress_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellRendererProgress *cellprogress = GTK_CELL_RENDERER_PROGRESS (object);
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
switch (param_id)
{
case PROP_VALUE:
gtk_cell_renderer_progress_set_value (cellprogress,
g_value_get_int (value));
break ;
case PROP_TEXT:
gtk_cell_renderer_progress_set_text (cellprogress,
g_value_get_string (value));
break ;
case PROP_PULSE:
gtk_cell_renderer_progress_set_pulse (cellprogress,
g_value_get_int (value));
break ;
case PROP_TEXT_XALIGN:
priv->text_xalign = g_value_get_float (value);
break ;
case PROP_TEXT_YALIGN:
priv->text_yalign = g_value_get_float (value);
break ;
case PROP_ORIENTATION:
if (priv->orientation != g_value_get_enum (value))
{
priv->orientation = g_value_get_enum (value);
g_object_notify_by_pspec (object, pspec);
}
break ;
case PROP_INVERTED:
if (priv->inverted != g_value_get_boolean (value))
{
priv->inverted = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
}
static void
compute_dimensions (GtkCellRenderer *cell,
GtkWidget *widget,
const char *text,
int *width,
int *height)
{
PangoRectangle logical_rect;
PangoLayout *layout;
int xpad, ypad;
layout = gtk_widget_create_pango_layout (widget, text);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
if (width)
*width = logical_rect.width + xpad * 2 ;
if (height)
*height = logical_rect.height + ypad * 2 ;
g_object_unref (layout);
}
static void
gtk_cell_renderer_progress_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum,
int *natural)
{
GtkCellRendererProgress *self = GTK_CELL_RENDERER_PROGRESS (cell);
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (self);
int w, h;
int size;
if (priv->min_w < 0 )
{
char *text = g_strdup_printf (C_("progress bar label" , "%d %%" ), 100 );
compute_dimensions (cell, widget, text,
&priv->min_w,
&priv->min_h);
g_free (text);
}
compute_dimensions (cell, widget, priv->label, &w, &h);
size = MAX (priv->min_w, w);
if (minimum != NULL)
*minimum = size;
if (natural != NULL)
*natural = size;
}
static void
gtk_cell_renderer_progress_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum,
int *natural)
{
GtkCellRendererProgress *self = GTK_CELL_RENDERER_PROGRESS (cell);
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (self);
int w, h;
int size;
if (priv->min_w < 0 )
{
char *text = g_strdup_printf (C_("progress bar label" , "%d %%" ), 100 );
compute_dimensions (cell, widget, text,
&priv->min_w,
&priv->min_h);
g_free (text);
}
compute_dimensions (cell, widget, priv->label, &w, &h);
size = MIN (priv->min_h, h);
if (minimum != NULL)
*minimum = size;
if (natural != NULL)
*natural = size;
}
static inline int
get_bar_size (int pulse,
int value,
int full_size)
{
int bar_size;
if (pulse < 0 )
bar_size = full_size * MAX (0 , value) / 100 ;
else if (pulse == 0 )
bar_size = 0 ;
else if (pulse == G_MAXINT)
bar_size = full_size;
else
bar_size = MAX (2 , full_size / 5 );
return bar_size;
}
static inline int
get_bar_position (int start,
int full_size,
int bar_size,
int pulse,
int offset,
gboolean is_rtl)
{
int position;
if (pulse < 0 || pulse == 0 || pulse == G_MAXINT)
{
position = is_rtl ? (start + full_size - bar_size) : start;
}
else
{
position = (is_rtl ? offset + 12 : offset) % 24 ;
if (position > 12 )
position = 24 - position;
position = start + full_size * position / 15 ;
}
return position;
}
static void
gtk_cell_renderer_progress_snapshot (GtkCellRenderer *cell,
GtkSnapshot *snapshot,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererProgress *cellprogress = GTK_CELL_RENDERER_PROGRESS (cell);
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
GtkStyleContext *context;
GtkBorder padding;
PangoLayout *layout;
PangoRectangle logical_rect;
int x, y, w, h, x_pos, y_pos, bar_position, bar_size, start, full_size;
int xpad, ypad;
GdkRectangle clip;
gboolean is_rtl;
context = gtk_widget_get_style_context (widget);
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
x = cell_area->x + xpad;
y = cell_area->y + ypad;
w = cell_area->width - xpad * 2 ;
h = cell_area->height - ypad * 2 ;
gtk_style_context_save (context);
gtk_style_context_add_class (context, "trough" );
gtk_snapshot_render_background (snapshot, context, x, y, w, h);
gtk_snapshot_render_frame (snapshot, context, x, y, w, h);
gtk_style_context_get_padding (context, &padding);
x += padding.left;
y += padding.top;
w -= padding.left + padding.right;
h -= padding.top + padding.bottom;
gtk_style_context_restore (context);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
clip.y = y;
clip.height = h;
start = x;
full_size = w;
bar_size = get_bar_size (priv->pulse, priv->value, full_size);
if (!priv->inverted)
bar_position = get_bar_position (start, full_size, bar_size,
priv->pulse, priv->offset, is_rtl);
else
bar_position = get_bar_position (start, full_size, bar_size,
priv->pulse, priv->offset, !is_rtl);
clip.width = bar_size;
clip.x = bar_position;
}
else
{
clip.x = x;
clip.width = w;
start = y;
full_size = h;
bar_size = get_bar_size (priv->pulse, priv->value, full_size);
if (priv->inverted)
bar_position = get_bar_position (start, full_size, bar_size,
priv->pulse, priv->offset, TRUE );
else
bar_position = get_bar_position (start, full_size, bar_size,
priv->pulse, priv->offset, FALSE );
clip.height = bar_size;
clip.y = bar_position;
}
if (bar_size > 0 )
{
gtk_style_context_save (context);
gtk_style_context_add_class (context, "progressbar" );
gtk_snapshot_render_background (snapshot, context, clip.x, clip.y, clip.width, clip.height);
gtk_snapshot_render_frame (snapshot, context, clip.x, clip.y, clip.width, clip.height);
gtk_style_context_restore (context);
}
if (priv->label)
{
float text_xalign;
layout = gtk_widget_create_pango_layout (widget, priv->label);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
text_xalign = 1 .0 - priv->text_xalign;
else
text_xalign = priv->text_xalign;
x_pos = x + padding.left + text_xalign *
(w - padding.left - padding.right - logical_rect.width);
y_pos = y + padding.top + priv->text_yalign *
(h - padding.top - padding.bottom - logical_rect.height);
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT(
clip.x, clip.y,
clip.width, clip.height
));
gtk_style_context_save (context);
gtk_style_context_add_class (context, "progressbar" );
gtk_snapshot_render_layout (snapshot, context,
x_pos, y_pos,
layout);
gtk_style_context_restore (context);
gtk_snapshot_pop (snapshot);
gtk_style_context_save (context);
gtk_style_context_add_class (context, "trough" );
if (bar_position > start)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
clip.x = x;
clip.width = bar_position - x;
}
else
{
clip.y = y;
clip.height = bar_position - y;
}
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT(
clip.x, clip.y,
clip.width, clip.height
));
gtk_snapshot_render_layout (snapshot, context,
x_pos, y_pos,
layout);
gtk_snapshot_pop (snapshot);
}
if (bar_position + bar_size < start + full_size)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
clip.x = bar_position + bar_size;
clip.width = x + w - (bar_position + bar_size);
}
else
{
clip.y = bar_position + bar_size;
clip.height = y + h - (bar_position + bar_size);
}
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT(
clip.x, clip.y,
clip.width, clip.height
));
gtk_snapshot_render_layout (snapshot, context,
x_pos, y_pos,
layout);
gtk_snapshot_pop (snapshot);
}
gtk_style_context_restore (context);
g_object_unref (layout);
}
}
static void
gtk_cell_renderer_progress_class_init (GtkCellRendererProgressClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (klass);
object_class->finalize = gtk_cell_renderer_progress_finalize;
object_class->get_property = gtk_cell_renderer_progress_get_property;
object_class->set_property = gtk_cell_renderer_progress_set_property;
cell_class->get_preferred_width = gtk_cell_renderer_progress_get_preferred_width;
cell_class->get_preferred_height = gtk_cell_renderer_progress_get_preferred_height;
cell_class->snapshot = gtk_cell_renderer_progress_snapshot;
/**
* GtkCellRendererProgress : value :
*
* The " value " property determines the percentage to which the
* progress bar will be " filled in " .
**/
props[PROP_VALUE] = g_param_spec_int ("value" , NULL, NULL,
0 , 100 , 0 ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkCellRendererProgress : text :
*
* The " text " property determines the label which will be drawn
* over the progress bar . Setting this property to % NULL causes the default
* label to be displayed . Setting this property to an empty string causes
* no label to be displayed .
**/
props[PROP_TEXT] = g_param_spec_string ("text" , NULL, NULL,
NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME);
/**
* GtkCellRendererProgress : pulse :
*
* Setting this to a non - negative value causes the cell renderer to
* enter " activity mode " , where a block bounces back and forth to
* indicate that some progress is made , without specifying exactly how
* much .
*
* Each increment of the property causes the block to move by a little
* bit .
*
* To indicate that the activity has not started yet , set the property
* to zero . To indicate completion , set the property to % G_MAXINT .
*/
props[PROP_PULSE] = g_param_spec_int ("pulse" , NULL, NULL,
-1 , G_MAXINT, -1 ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkCellRendererProgress : text - xalign :
*
* The " text - xalign " property controls the horizontal alignment of the
* text in the progress bar . Valid values range from 0 ( left ) to 1
* ( right ) . Reserved for RTL layouts .
*/
props[PROP_TEXT_XALIGN] = g_param_spec_float ("text-xalign" , NULL, NULL,
0 .0 , 1 .0 , 0 .5 ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME);
/**
* GtkCellRendererProgress : text - yalign :
*
* The " text - yalign " property controls the vertical alignment of the
* text in the progress bar . Valid values range from 0 ( top ) to 1
* ( bottom ) .
*/
props[PROP_TEXT_YALIGN] = g_param_spec_float ("text-yalign" , NULL, NULL,
0 .0 , 1 .0 , 0 .5 ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME);
props[PROP_ORIENTATION] = g_param_spec_override ("orientation" ,
g_object_interface_find_property (g_type_default_interface_ref (GTK_TYPE_ORIENTABLE), "orientation" ));
/**
* GtkCellRendererProgress : inverted :
*
* Whether progess is inverted .
*/
props[PROP_INVERTED] = g_param_spec_boolean ("inverted" , NULL, NULL,
FALSE ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, N_PROPS, props);
}
static void
gtk_cell_renderer_progress_init (GtkCellRendererProgress *cellprogress)
{
GtkCellRendererProgressPrivate *priv = gtk_cell_renderer_progress_get_instance_private (cellprogress);
priv->value = 0 ;
priv->text = NULL;
priv->label = NULL;
priv->min_w = -1 ;
priv->min_h = -1 ;
priv->pulse = -1 ;
priv->offset = 0 ;
priv->text_xalign = 0 .5 ;
priv->text_yalign = 0 .5 ;
priv->orientation = GTK_ORIENTATION_HORIZONTAL,
priv->inverted = FALSE ;
}
/**
* gtk_cell_renderer_progress_new :
*
* Creates a new ` GtkCellRendererProgress ` .
*
* Returns : the new cell renderer
*
* Deprecated : 4 . 10
**/
GtkCellRenderer*
gtk_cell_renderer_progress_new (void )
{
return g_object_new (GTK_TYPE_CELL_RENDERER_PROGRESS, NULL);
}
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