forked from AuroraMiddleware/gtk
36ab70ddf5
Since setting a clip is mandatory for almost all widgets, we can as well change the size-allocate signature to include a out_clip parameter, just like GtkCssGadget did. And since we now always propagate baselines, we might as well pass that one on to size-allocate. This way we can also make sure to transform the clip returned from size-allocate to parent-coordinates, i.e. the same coordinate space priv->allocation is in.
2099 lines
65 KiB
C
2099 lines
65 KiB
C
/* GTK - The GIMP Toolkit
|
||
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
||
* Copyright (C) 2001 Red Hat, Inc.
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
/*
|
||
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
||
* file for a list of people on the GTK+ Team. See the ChangeLog
|
||
* files for a list of changes. These files are distributed with
|
||
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
||
*/
|
||
|
||
#include "config.h"
|
||
|
||
#include <math.h>
|
||
#include <stdlib.h>
|
||
|
||
#include "gtkrangeprivate.h"
|
||
|
||
#include "gtkadjustment.h"
|
||
#include "gtkbindings.h"
|
||
#include "gtkbuildable.h"
|
||
#include "gtkbuilderprivate.h"
|
||
#include "gtkicontheme.h"
|
||
#include "gtkintl.h"
|
||
#include "gtkmarshalers.h"
|
||
#include "gtkorientable.h"
|
||
#include "gtkprivate.h"
|
||
#include "gtktypebuiltins.h"
|
||
#include "gtkstylecontextprivate.h"
|
||
#include "gtkstylepropertyprivate.h"
|
||
#include "gtkwidgetprivate.h"
|
||
#include "gtkcsswidgetnodeprivate.h"
|
||
#include "gtkgizmoprivate.h"
|
||
|
||
#include "a11y/gtkscaleaccessible.h"
|
||
|
||
|
||
/**
|
||
* SECTION:gtkscale
|
||
* @Short_description: A slider widget for selecting a value from a range
|
||
* @Title: GtkScale
|
||
*
|
||
* A GtkScale is a slider control used to select a numeric value.
|
||
* To use it, you’ll probably want to investigate the methods on
|
||
* its base class, #GtkRange, in addition to the methods for GtkScale itself.
|
||
* To set the value of a scale, you would normally use gtk_range_set_value().
|
||
* To detect changes to the value, you would normally use the
|
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* #GtkRange::value-changed signal.
|
||
*
|
||
* Note that using the same upper and lower bounds for the #GtkScale (through
|
||
* the #GtkRange methods) will hide the slider itself. This is useful for
|
||
* applications that want to show an undeterminate value on the scale, without
|
||
* changing the layout of the application (such as movie or music players).
|
||
*
|
||
* # GtkScale as GtkBuildable
|
||
*
|
||
* GtkScale supports a custom <marks> element, which can contain multiple
|
||
* <mark> elements. The “value” and “position” attributes have the same
|
||
* meaning as gtk_scale_add_mark() parameters of the same name. If the
|
||
* element is not empty, its content is taken as the markup to show at
|
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* the mark. It can be translated with the usual ”translatable” and
|
||
* “context” attributes.
|
||
*
|
||
* # CSS nodes
|
||
*
|
||
* |[<!-- language="plain" -->
|
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* scale[.fine-tune][.marks-before][.marks-after]
|
||
* ├── marks.top
|
||
* │ ├── mark
|
||
* │ ┊ ├── [label]
|
||
* │ ┊ ╰── indicator
|
||
* ┊ ┊
|
||
* │ ╰── mark
|
||
* ├── [value]
|
||
* ├── trough
|
||
* │ ├── slider
|
||
* │ ├── [highlight]
|
||
* │ ╰── [fill]
|
||
* ╰── marks.bottom
|
||
* ├── mark
|
||
* ┊ ├── indicator
|
||
* ┊ ╰── [label]
|
||
* ╰── mark
|
||
* ]|
|
||
*
|
||
* GtkScale has a main CSS node with name scale and a subnode for its contents,
|
||
* with subnodes named trough and slider.
|
||
*
|
||
* The main node gets the style class .fine-tune added when the scale is in
|
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* 'fine-tuning' mode.
|
||
*
|
||
* If the scale has an origin (see gtk_scale_set_has_origin()), there is a
|
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* subnode with name highlight below the trough node that is used for rendering
|
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* the highlighted part of the trough.
|
||
*
|
||
* If the scale is showing a fill level (see gtk_range_set_show_fill_level()),
|
||
* there is a subnode with name fill below the trough node that is used for
|
||
* rendering the filled in part of the trough.
|
||
*
|
||
* If marks are present, there is a marks subnode before or after the trough
|
||
* node, below which each mark gets a node with name mark. The marks nodes get
|
||
* either the .top or .bottom style class.
|
||
*
|
||
* The mark node has a subnode named indicator. If the mark has text, it also
|
||
* has a subnode named label. When the mark is either above or left of the
|
||
* scale, the label subnode is the first when present. Otherwise, the indicator
|
||
* subnode is the first.
|
||
*
|
||
* The main CSS node gets the 'marks-before' and/or 'marks-after' style classes
|
||
* added depending on what marks are present.
|
||
*
|
||
* If the scale is displaying the value (see #GtkScale:draw-value), there is
|
||
* subnode with name value.
|
||
*/
|
||
|
||
|
||
#define MAX_DIGITS (64) /* don't change this,
|
||
* a) you don't need to and
|
||
* b) you might cause buffer owerflows in
|
||
* unrelated code portions otherwise
|
||
*/
|
||
|
||
typedef struct _GtkScaleMark GtkScaleMark;
|
||
|
||
struct _GtkScalePrivate
|
||
{
|
||
GSList *marks;
|
||
|
||
GtkWidget *value_widget;
|
||
GtkWidget *top_marks_widget;
|
||
GtkWidget *bottom_marks_widget;
|
||
|
||
gint digits;
|
||
|
||
guint draw_value : 1;
|
||
guint value_pos : 2;
|
||
};
|
||
|
||
struct _GtkScaleMark
|
||
{
|
||
gdouble value;
|
||
int stop_position;
|
||
gchar *markup;
|
||
GtkWidget *label_widget;
|
||
GtkWidget *indicator_widget;
|
||
GtkWidget *widget;
|
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GtkPositionType position; /* always GTK_POS_TOP or GTK_POS_BOTTOM */
|
||
};
|
||
|
||
enum {
|
||
PROP_0,
|
||
PROP_DIGITS,
|
||
PROP_DRAW_VALUE,
|
||
PROP_HAS_ORIGIN,
|
||
PROP_VALUE_POS,
|
||
LAST_PROP
|
||
};
|
||
|
||
enum {
|
||
FORMAT_VALUE,
|
||
LAST_SIGNAL
|
||
};
|
||
|
||
static GParamSpec *properties[LAST_PROP];
|
||
static guint signals[LAST_SIGNAL];
|
||
|
||
static void gtk_scale_set_property (GObject *object,
|
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guint prop_id,
|
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const GValue *value,
|
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GParamSpec *pspec);
|
||
static void gtk_scale_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gtk_scale_measure (GtkWidget *widget,
|
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GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline);
|
||
static void gtk_scale_get_range_border (GtkRange *range,
|
||
GtkBorder *border);
|
||
static void gtk_scale_get_range_size_request (GtkRange *range,
|
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GtkOrientation orientation,
|
||
gint *minimum,
|
||
gint *natural);
|
||
static void gtk_scale_finalize (GObject *object);
|
||
static void gtk_scale_snapshot (GtkWidget *widget,
|
||
GtkSnapshot *snapshot);
|
||
static void gtk_scale_real_get_layout_offsets (GtkScale *scale,
|
||
gint *x,
|
||
gint *y);
|
||
static void gtk_scale_buildable_interface_init (GtkBuildableIface *iface);
|
||
static gboolean gtk_scale_buildable_custom_tag_start (GtkBuildable *buildable,
|
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GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
GMarkupParser *parser,
|
||
gpointer *data);
|
||
static void gtk_scale_buildable_custom_finished (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer user_data);
|
||
static gchar * gtk_scale_format_value (GtkScale *scale,
|
||
gdouble value);
|
||
|
||
|
||
G_DEFINE_TYPE_WITH_CODE (GtkScale, gtk_scale, GTK_TYPE_RANGE,
|
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G_ADD_PRIVATE (GtkScale)
|
||
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
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||
gtk_scale_buildable_interface_init))
|
||
|
||
static gint
|
||
compare_marks (gconstpointer a, gconstpointer b, gpointer data)
|
||
{
|
||
gboolean inverted = GPOINTER_TO_INT (data);
|
||
gint val;
|
||
const GtkScaleMark *ma, *mb;
|
||
|
||
val = inverted ? -1 : 1;
|
||
|
||
ma = a; mb = b;
|
||
|
||
return (ma->value > mb->value) ? val : ((ma->value < mb->value) ? -val : 0);
|
||
}
|
||
|
||
static void
|
||
update_label_request (GtkScale *scale)
|
||
{
|
||
GtkScalePrivate *priv = gtk_scale_get_instance_private (scale);
|
||
GtkAdjustment *adjustment = gtk_range_get_adjustment (GTK_RANGE (scale));
|
||
double lowest_value, highest_value;
|
||
char *old_text;
|
||
char *text;
|
||
int size = 0;
|
||
int min;
|
||
|
||
g_assert (priv->value_widget != NULL);
|
||
|
||
lowest_value = gtk_adjustment_get_lower (adjustment);
|
||
highest_value = gtk_adjustment_get_upper (adjustment);
|
||
|
||
old_text = g_strdup (gtk_label_get_label (GTK_LABEL (priv->value_widget)));
|
||
|
||
text = gtk_scale_format_value (scale, lowest_value);
|
||
gtk_label_set_label (GTK_LABEL (priv->value_widget), text);
|
||
|
||
gtk_widget_measure (priv->value_widget, GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&min, NULL, NULL, NULL);
|
||
size = MAX (size, min);
|
||
g_free (text);
|
||
|
||
|
||
text = gtk_scale_format_value (scale, highest_value);
|
||
gtk_label_set_label (GTK_LABEL (priv->value_widget), text);
|
||
|
||
gtk_widget_measure (priv->value_widget, GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&min, NULL, NULL, NULL);
|
||
size = MAX (size, min);
|
||
g_free (text);
|
||
|
||
gtk_widget_set_size_request (priv->value_widget, size, -1);
|
||
gtk_label_set_label (GTK_LABEL (priv->value_widget), old_text);
|
||
g_free (old_text);
|
||
}
|
||
|
||
static void
|
||
gtk_scale_notify (GObject *object,
|
||
GParamSpec *pspec)
|
||
{
|
||
if (strcmp (pspec->name, "inverted") == 0)
|
||
{
|
||
GtkScale *scale = GTK_SCALE (object);
|
||
GtkScaleMark *mark;
|
||
GSList *m;
|
||
gint i, n;
|
||
gdouble *values;
|
||
|
||
scale->priv->marks = g_slist_sort_with_data (scale->priv->marks,
|
||
compare_marks,
|
||
GINT_TO_POINTER (gtk_range_get_inverted (GTK_RANGE (scale))));
|
||
|
||
n = g_slist_length (scale->priv->marks);
|
||
values = g_new (gdouble, n);
|
||
for (m = scale->priv->marks, i = 0; m; m = m->next, i++)
|
||
{
|
||
mark = m->data;
|
||
values[i] = mark->value;
|
||
}
|
||
|
||
_gtk_range_set_stop_values (GTK_RANGE (scale), values, n);
|
||
|
||
g_free (values);
|
||
}
|
||
else if (strcmp (pspec->name, "adjustment"))
|
||
{
|
||
GtkScale *scale = GTK_SCALE (object);
|
||
if (scale->priv->value_widget)
|
||
update_label_request (scale);
|
||
}
|
||
|
||
if (G_OBJECT_CLASS (gtk_scale_parent_class)->notify)
|
||
G_OBJECT_CLASS (gtk_scale_parent_class)->notify (object, pspec);
|
||
}
|
||
|
||
static void
|
||
gtk_scale_allocate_value (GtkScale *scale,
|
||
GtkAllocation *out_clip)
|
||
{
|
||
GtkScalePrivate *priv = scale->priv;
|
||
GtkWidget *widget = GTK_WIDGET (scale);
|
||
GtkRange *range = GTK_RANGE (widget);
|
||
GtkWidget *slider_widget;
|
||
GtkAllocation range_alloc, slider_alloc, value_alloc;
|
||
|
||
gtk_widget_get_content_allocation (widget, &range_alloc);
|
||
|
||
slider_widget = gtk_range_get_slider_widget (range);
|
||
gtk_widget_get_border_allocation (slider_widget, &slider_alloc);
|
||
|
||
gtk_widget_measure (priv->value_widget,
|
||
GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&value_alloc.width, NULL,
|
||
NULL, NULL);
|
||
gtk_widget_measure (priv->value_widget,
|
||
GTK_ORIENTATION_VERTICAL, -1,
|
||
&value_alloc.height, NULL,
|
||
NULL, NULL);
|
||
|
||
if (gtk_orientable_get_orientation (GTK_ORIENTABLE (range)) == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
switch (priv->value_pos)
|
||
{
|
||
case GTK_POS_LEFT:
|
||
value_alloc.x = 0;
|
||
value_alloc.y = (range_alloc.height - value_alloc.height) / 2;
|
||
break;
|
||
|
||
case GTK_POS_RIGHT:
|
||
value_alloc.x = range_alloc.width - value_alloc.width;
|
||
value_alloc.y = (range_alloc.height - value_alloc.height) / 2;
|
||
break;
|
||
|
||
case GTK_POS_TOP:
|
||
value_alloc.x = slider_alloc.x + (slider_alloc.width - value_alloc.width) / 2;
|
||
value_alloc.x = CLAMP (value_alloc.x, range_alloc.x, range_alloc.x + range_alloc.width - value_alloc.width);
|
||
value_alloc.y = 0;
|
||
break;
|
||
|
||
case GTK_POS_BOTTOM:
|
||
value_alloc.x = slider_alloc.x + (slider_alloc.width - value_alloc.width) / 2;
|
||
value_alloc.x = CLAMP (value_alloc.x, range_alloc.x, range_alloc.x + range_alloc.width - value_alloc.width);
|
||
value_alloc.y = range_alloc.height - value_alloc.height;
|
||
break;
|
||
|
||
default:
|
||
g_return_if_reached ();
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
switch (priv->value_pos)
|
||
{
|
||
case GTK_POS_LEFT:
|
||
value_alloc.x = 0;
|
||
value_alloc.y = CLAMP (value_alloc.y, range_alloc.y, range_alloc.y + range_alloc.height - value_alloc.height);
|
||
break;
|
||
|
||
case GTK_POS_RIGHT:
|
||
value_alloc.x = range_alloc.width - value_alloc.width;
|
||
value_alloc.y = CLAMP (value_alloc.y, range_alloc.y, range_alloc.y + range_alloc.height - value_alloc.height);
|
||
break;
|
||
|
||
case GTK_POS_TOP:
|
||
value_alloc.x = (range_alloc.width - value_alloc.width) / 2;
|
||
value_alloc.y = 0;
|
||
break;
|
||
|
||
case GTK_POS_BOTTOM:
|
||
value_alloc.x = (range_alloc.width - value_alloc.width) / 2;
|
||
value_alloc.y = range_alloc.height - value_alloc.height;
|
||
break;
|
||
|
||
default:
|
||
g_return_if_reached ();
|
||
}
|
||
}
|
||
|
||
gtk_widget_size_allocate (priv->value_widget, &value_alloc, -1, out_clip);
|
||
}
|
||
|
||
static void
|
||
gtk_scale_allocate_mark (GtkGizmo *gizmo,
|
||
const GtkAllocation *allocation,
|
||
int baseline,
|
||
GtkAllocation *out_clip)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (gizmo);
|
||
GtkScale *scale = GTK_SCALE (gtk_widget_get_parent (gtk_widget_get_parent (widget)));
|
||
GtkScaleMark *mark = g_object_get_data (G_OBJECT (gizmo), "mark");
|
||
int indicator_width, indicator_height;
|
||
GtkAllocation indicator_alloc;
|
||
GtkOrientation orientation;
|
||
|
||
orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (scale));
|
||
gtk_widget_measure (mark->indicator_widget,
|
||
GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&indicator_width, NULL,
|
||
NULL, NULL);
|
||
gtk_widget_measure (mark->indicator_widget,
|
||
GTK_ORIENTATION_VERTICAL, -1,
|
||
&indicator_height, NULL,
|
||
NULL, NULL);
|
||
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
indicator_alloc.x = (allocation->width - indicator_width) / 2;
|
||
if (mark->position == GTK_POS_TOP)
|
||
indicator_alloc.y = allocation->y + allocation->height - indicator_height;
|
||
else
|
||
indicator_alloc.y = allocation->y;
|
||
indicator_alloc.width = indicator_width;
|
||
indicator_alloc.height = indicator_height;
|
||
}
|
||
else
|
||
{
|
||
if (mark->position == GTK_POS_TOP)
|
||
indicator_alloc.x = allocation->x + allocation->width - indicator_width;
|
||
else
|
||
indicator_alloc.x = allocation->x;
|
||
indicator_alloc.y = (allocation->height - indicator_height) / 2;
|
||
indicator_alloc.width = indicator_width;
|
||
indicator_alloc.height = indicator_height;
|
||
}
|
||
|
||
gtk_widget_size_allocate (mark->indicator_widget, &indicator_alloc, baseline, out_clip);
|
||
|
||
if (mark->label_widget)
|
||
{
|
||
GtkAllocation label_alloc, label_clip;
|
||
|
||
label_alloc = *allocation;
|
||
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
label_alloc.height = allocation->height - indicator_alloc.height;
|
||
if (mark->position == GTK_POS_BOTTOM)
|
||
label_alloc.y = indicator_alloc.y + indicator_alloc.height;
|
||
}
|
||
else
|
||
{
|
||
label_alloc.width = allocation->width - indicator_alloc.width;
|
||
if (mark->position == GTK_POS_BOTTOM)
|
||
label_alloc.x = indicator_alloc.x + indicator_alloc.width;
|
||
}
|
||
|
||
gtk_widget_size_allocate (mark->label_widget, &label_alloc, baseline, &label_clip);
|
||
gdk_rectangle_union (out_clip, &label_clip, out_clip);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_allocate_marks (GtkGizmo *gizmo,
|
||
const GtkAllocation *allocation,
|
||
int baseline,
|
||
GtkAllocation *out_clip)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (gizmo);
|
||
GtkScale *scale = GTK_SCALE (gtk_widget_get_parent (widget));
|
||
GtkScalePrivate *priv = scale->priv;
|
||
GtkOrientation orientation;
|
||
int *marks;
|
||
int i;
|
||
GSList *m;
|
||
|
||
orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (scale));
|
||
_gtk_range_get_stop_positions (GTK_RANGE (scale), &marks);
|
||
|
||
for (m = priv->marks, i = 0; m; m = m->next, i++)
|
||
{
|
||
GtkScaleMark *mark = m->data;
|
||
GtkAllocation mark_alloc, mark_clip;
|
||
int mark_size;
|
||
|
||
if ((mark->position == GTK_POS_TOP && widget == priv->bottom_marks_widget) ||
|
||
(mark->position == GTK_POS_BOTTOM && widget == priv->top_marks_widget))
|
||
continue;
|
||
|
||
gtk_widget_measure (mark->widget,
|
||
orientation, -1,
|
||
&mark_size, NULL,
|
||
NULL, NULL);
|
||
mark->stop_position = marks[i];
|
||
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
mark_alloc.x = mark->stop_position;
|
||
mark_alloc.y = allocation->y;
|
||
mark_alloc.width = mark_size;
|
||
mark_alloc.height = allocation->height;
|
||
|
||
mark_alloc.x -= mark_size / 2;
|
||
}
|
||
else
|
||
{
|
||
mark_alloc.x = allocation->x;
|
||
mark_alloc.y = mark->stop_position;
|
||
mark_alloc.width = allocation->width;
|
||
mark_alloc.height = mark_size;
|
||
|
||
mark_alloc.y -= mark_size / 2;
|
||
}
|
||
|
||
gtk_widget_size_allocate (mark->widget, &mark_alloc, baseline, &mark_clip);
|
||
gdk_rectangle_union (out_clip, &mark_clip, out_clip);
|
||
}
|
||
|
||
g_free (marks);
|
||
}
|
||
|
||
static void
|
||
gtk_scale_size_allocate (GtkWidget *widget,
|
||
const GtkAllocation *allocation,
|
||
int baseline,
|
||
GtkAllocation *out_clip)
|
||
{
|
||
GtkScale *scale = GTK_SCALE (widget);
|
||
GtkScalePrivate *priv = scale->priv;
|
||
GtkAllocation marks_clip, range_rect, marks_rect;
|
||
GtkOrientation orientation;
|
||
|
||
GTK_WIDGET_CLASS (gtk_scale_parent_class)->size_allocate (widget, allocation, baseline, out_clip);
|
||
|
||
orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (widget));
|
||
gtk_range_get_range_rect (GTK_RANGE (scale), &range_rect);
|
||
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
int marks_height = 0;
|
||
|
||
if (priv->top_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->top_marks_widget,
|
||
GTK_ORIENTATION_VERTICAL, -1,
|
||
&marks_height, NULL,
|
||
NULL, NULL);
|
||
marks_rect = range_rect;
|
||
marks_rect.y = 0;
|
||
marks_rect.height = marks_height;
|
||
gtk_widget_size_allocate (priv->top_marks_widget, &marks_rect, -1, &marks_clip);
|
||
gdk_rectangle_union (out_clip, &marks_clip, out_clip);
|
||
}
|
||
|
||
if (priv->bottom_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->bottom_marks_widget,
|
||
GTK_ORIENTATION_VERTICAL, -1,
|
||
&marks_height, NULL,
|
||
NULL, NULL);
|
||
marks_rect = range_rect;
|
||
marks_rect.y += range_rect.height;
|
||
marks_rect.height = marks_height;
|
||
gtk_widget_size_allocate (priv->bottom_marks_widget, &marks_rect, -1, &marks_clip);
|
||
gdk_rectangle_union (out_clip, &marks_clip, out_clip);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
int marks_width = 0;
|
||
|
||
if (priv->top_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->top_marks_widget,
|
||
GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&marks_width, NULL,
|
||
NULL, NULL);
|
||
marks_rect = range_rect;
|
||
marks_rect.x -= marks_width;
|
||
marks_rect.width = marks_width;
|
||
gtk_widget_size_allocate (priv->top_marks_widget, &marks_rect, -1, &marks_clip);
|
||
gdk_rectangle_union (out_clip, &marks_clip, out_clip);
|
||
}
|
||
|
||
if (priv->bottom_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->bottom_marks_widget,
|
||
GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&marks_width, NULL,
|
||
NULL, NULL);
|
||
marks_rect = range_rect;
|
||
marks_rect.x += range_rect.width;
|
||
marks_rect.width = marks_width;
|
||
gtk_widget_size_allocate (priv->bottom_marks_widget, &marks_rect, -1, &marks_clip);
|
||
gdk_rectangle_union (out_clip, &marks_clip, out_clip);
|
||
}
|
||
}
|
||
|
||
if (priv->value_widget)
|
||
{
|
||
GtkAllocation value_clip;
|
||
|
||
gtk_scale_allocate_value (scale, &value_clip);
|
||
gdk_rectangle_union (out_clip, &value_clip, out_clip);
|
||
}
|
||
}
|
||
|
||
#define add_slider_binding(binding_set, keyval, mask, scroll) \
|
||
gtk_binding_entry_add_signal (binding_set, keyval, mask, \
|
||
I_("move-slider"), 1, \
|
||
GTK_TYPE_SCROLL_TYPE, scroll)
|
||
|
||
static void
|
||
gtk_scale_value_changed (GtkRange *range)
|
||
{
|
||
GtkScalePrivate *priv = gtk_scale_get_instance_private (GTK_SCALE (range));
|
||
GtkAdjustment *adjustment = gtk_range_get_adjustment (range);
|
||
|
||
if (priv->value_widget)
|
||
{
|
||
char *text = gtk_scale_format_value (GTK_SCALE (range),
|
||
gtk_adjustment_get_value (adjustment));
|
||
gtk_label_set_label (GTK_LABEL (priv->value_widget), text);
|
||
|
||
g_free (text);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_class_init (GtkScaleClass *class)
|
||
{
|
||
GObjectClass *gobject_class;
|
||
GtkWidgetClass *widget_class;
|
||
GtkRangeClass *range_class;
|
||
GtkBindingSet *binding_set;
|
||
|
||
gobject_class = G_OBJECT_CLASS (class);
|
||
range_class = (GtkRangeClass*) class;
|
||
widget_class = (GtkWidgetClass*) class;
|
||
|
||
gobject_class->set_property = gtk_scale_set_property;
|
||
gobject_class->get_property = gtk_scale_get_property;
|
||
gobject_class->notify = gtk_scale_notify;
|
||
gobject_class->finalize = gtk_scale_finalize;
|
||
|
||
widget_class->snapshot = gtk_scale_snapshot;
|
||
widget_class->size_allocate = gtk_scale_size_allocate;
|
||
widget_class->measure = gtk_scale_measure;
|
||
|
||
range_class->get_range_border = gtk_scale_get_range_border;
|
||
range_class->get_range_size_request = gtk_scale_get_range_size_request;
|
||
range_class->value_changed = gtk_scale_value_changed;
|
||
|
||
class->get_layout_offsets = gtk_scale_real_get_layout_offsets;
|
||
|
||
/**
|
||
* GtkScale::format-value:
|
||
* @scale: the object which received the signal
|
||
* @value: the value to format
|
||
*
|
||
* Signal which allows you to change how the scale value is displayed.
|
||
* Connect a signal handler which returns an allocated string representing
|
||
* @value. That string will then be used to display the scale's value.
|
||
*
|
||
* If no user-provided handlers are installed, the value will be displayed on
|
||
* its own, rounded according to the value of the #GtkScale:digits property.
|
||
*
|
||
* Here's an example signal handler which displays a value 1.0 as
|
||
* with "-->1.0<--".
|
||
* |[<!-- language="C" -->
|
||
* static gchar*
|
||
* format_value_callback (GtkScale *scale,
|
||
* gdouble value)
|
||
* {
|
||
* return g_strdup_printf ("-->\%0.*g<--",
|
||
* gtk_scale_get_digits (scale), value);
|
||
* }
|
||
* ]|
|
||
*
|
||
* Returns: allocated string representing @value
|
||
*/
|
||
signals[FORMAT_VALUE] =
|
||
g_signal_new (I_("format-value"),
|
||
G_TYPE_FROM_CLASS (gobject_class),
|
||
G_SIGNAL_RUN_LAST,
|
||
G_STRUCT_OFFSET (GtkScaleClass, format_value),
|
||
_gtk_single_string_accumulator, NULL,
|
||
_gtk_marshal_STRING__DOUBLE,
|
||
G_TYPE_STRING, 1,
|
||
G_TYPE_DOUBLE);
|
||
|
||
properties[PROP_DIGITS] =
|
||
g_param_spec_int ("digits",
|
||
P_("Digits"),
|
||
P_("The number of decimal places that are displayed in the value"),
|
||
-1, MAX_DIGITS,
|
||
1,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
properties[PROP_DRAW_VALUE] =
|
||
g_param_spec_boolean ("draw-value",
|
||
P_("Draw Value"),
|
||
P_("Whether the current value is displayed as a string next to the slider"),
|
||
TRUE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
properties[PROP_HAS_ORIGIN] =
|
||
g_param_spec_boolean ("has-origin",
|
||
P_("Has Origin"),
|
||
P_("Whether the scale has an origin"),
|
||
TRUE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
properties[PROP_VALUE_POS] =
|
||
g_param_spec_enum ("value-pos",
|
||
P_("Value Position"),
|
||
P_("The position in which the current value is displayed"),
|
||
GTK_TYPE_POSITION_TYPE,
|
||
GTK_POS_TOP,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
g_object_class_install_properties (gobject_class, LAST_PROP, properties);
|
||
|
||
/* All bindings (even arrow keys) are on both h/v scale, because
|
||
* blind users etc. don't care about scale orientation.
|
||
*/
|
||
|
||
binding_set = gtk_binding_set_by_class (class);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Left, 0,
|
||
GTK_SCROLL_STEP_LEFT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_LEFT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Left, 0,
|
||
GTK_SCROLL_STEP_LEFT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_LEFT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Right, 0,
|
||
GTK_SCROLL_STEP_RIGHT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_RIGHT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Right, 0,
|
||
GTK_SCROLL_STEP_RIGHT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_RIGHT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Up, 0,
|
||
GTK_SCROLL_STEP_UP);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Up, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_UP);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Up, 0,
|
||
GTK_SCROLL_STEP_UP);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Up, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_UP);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Down, 0,
|
||
GTK_SCROLL_STEP_DOWN);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Down, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_DOWN);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Down, 0,
|
||
GTK_SCROLL_STEP_DOWN);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Down, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_DOWN);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Page_Up, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_LEFT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Page_Up, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_LEFT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Page_Up, 0,
|
||
GTK_SCROLL_PAGE_UP);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Page_Up, 0,
|
||
GTK_SCROLL_PAGE_UP);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Page_Down, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_RIGHT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Page_Down, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_RIGHT);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Page_Down, 0,
|
||
GTK_SCROLL_PAGE_DOWN);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Page_Down, 0,
|
||
GTK_SCROLL_PAGE_DOWN);
|
||
|
||
/* Logical bindings (vs. visual bindings above) */
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_plus, 0,
|
||
GTK_SCROLL_STEP_FORWARD);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_minus, 0,
|
||
GTK_SCROLL_STEP_BACKWARD);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_plus, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_FORWARD);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_minus, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_BACKWARD);
|
||
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Add, 0,
|
||
GTK_SCROLL_STEP_FORWARD);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Subtract, 0,
|
||
GTK_SCROLL_STEP_BACKWARD);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Add, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_FORWARD);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Subtract, GDK_CONTROL_MASK,
|
||
GTK_SCROLL_PAGE_BACKWARD);
|
||
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_Home, 0,
|
||
GTK_SCROLL_START);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_Home, 0,
|
||
GTK_SCROLL_START);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_End, 0,
|
||
GTK_SCROLL_END);
|
||
|
||
add_slider_binding (binding_set, GDK_KEY_KP_End, 0,
|
||
GTK_SCROLL_END);
|
||
|
||
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_SCALE_ACCESSIBLE);
|
||
gtk_widget_class_set_css_name (widget_class, "scale");
|
||
}
|
||
|
||
static void
|
||
gtk_scale_init (GtkScale *scale)
|
||
{
|
||
GtkScalePrivate *priv;
|
||
GtkRange *range = GTK_RANGE (scale);
|
||
|
||
scale->priv = gtk_scale_get_instance_private (scale);
|
||
priv = scale->priv;
|
||
|
||
priv->value_pos = GTK_POS_TOP;
|
||
priv->digits = 1;
|
||
|
||
gtk_widget_set_can_focus (GTK_WIDGET (scale), TRUE);
|
||
|
||
gtk_range_set_slider_size_fixed (range, TRUE);
|
||
|
||
_gtk_range_set_has_origin (range, TRUE);
|
||
|
||
gtk_scale_set_draw_value (scale, TRUE);
|
||
gtk_range_set_round_digits (range, priv->digits);
|
||
|
||
gtk_range_set_flippable (range, TRUE);
|
||
}
|
||
|
||
static void
|
||
gtk_scale_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkScale *scale;
|
||
|
||
scale = GTK_SCALE (object);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_DIGITS:
|
||
gtk_scale_set_digits (scale, g_value_get_int (value));
|
||
break;
|
||
case PROP_DRAW_VALUE:
|
||
gtk_scale_set_draw_value (scale, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_HAS_ORIGIN:
|
||
gtk_scale_set_has_origin (scale, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_VALUE_POS:
|
||
gtk_scale_set_value_pos (scale, g_value_get_enum (value));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkScale *scale = GTK_SCALE (object);
|
||
GtkScalePrivate *priv = scale->priv;
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_DIGITS:
|
||
g_value_set_int (value, priv->digits);
|
||
break;
|
||
case PROP_DRAW_VALUE:
|
||
g_value_set_boolean (value, priv->draw_value);
|
||
break;
|
||
case PROP_HAS_ORIGIN:
|
||
g_value_set_boolean (value, gtk_scale_get_has_origin (scale));
|
||
break;
|
||
case PROP_VALUE_POS:
|
||
g_value_set_enum (value, priv->value_pos);
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_new:
|
||
* @orientation: the scale’s orientation.
|
||
* @adjustment: (nullable): the #GtkAdjustment which sets the range
|
||
* of the scale, or %NULL to create a new adjustment.
|
||
*
|
||
* Creates a new #GtkScale.
|
||
*
|
||
* Returns: a new #GtkScale
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
GtkWidget *
|
||
gtk_scale_new (GtkOrientation orientation,
|
||
GtkAdjustment *adjustment)
|
||
{
|
||
g_return_val_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment),
|
||
NULL);
|
||
|
||
return g_object_new (GTK_TYPE_SCALE,
|
||
"orientation", orientation,
|
||
"adjustment", adjustment,
|
||
NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_new_with_range:
|
||
* @orientation: the scale’s orientation.
|
||
* @min: minimum value
|
||
* @max: maximum value
|
||
* @step: step increment (tick size) used with keyboard shortcuts
|
||
*
|
||
* Creates a new scale widget with the given orientation that lets the
|
||
* user input a number between @min and @max (including @min and @max)
|
||
* with the increment @step. @step must be nonzero; it’s the distance
|
||
* the slider moves when using the arrow keys to adjust the scale
|
||
* value.
|
||
*
|
||
* Note that the way in which the precision is derived works best if @step
|
||
* is a power of ten. If the resulting precision is not suitable for your
|
||
* needs, use gtk_scale_set_digits() to correct it.
|
||
*
|
||
* Returns: a new #GtkScale
|
||
*
|
||
* Since: 3.0
|
||
*/
|
||
GtkWidget *
|
||
gtk_scale_new_with_range (GtkOrientation orientation,
|
||
gdouble min,
|
||
gdouble max,
|
||
gdouble step)
|
||
{
|
||
GtkAdjustment *adj;
|
||
gint digits;
|
||
|
||
g_return_val_if_fail (min < max, NULL);
|
||
g_return_val_if_fail (step != 0.0, NULL);
|
||
|
||
adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
|
||
|
||
if (fabs (step) >= 1.0 || step == 0.0)
|
||
{
|
||
digits = 0;
|
||
}
|
||
else
|
||
{
|
||
digits = abs ((gint) floor (log10 (fabs (step))));
|
||
if (digits > 5)
|
||
digits = 5;
|
||
}
|
||
|
||
return g_object_new (GTK_TYPE_SCALE,
|
||
"orientation", orientation,
|
||
"adjustment", adj,
|
||
"digits", digits,
|
||
NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_set_digits:
|
||
* @scale: a #GtkScale
|
||
* @digits: the number of decimal places to display,
|
||
* e.g. use 1 to display 1.0, 2 to display 1.00, etc
|
||
*
|
||
* Sets the number of decimal places that are displayed in the value. Also
|
||
* causes the value of the adjustment to be rounded to this number of digits,
|
||
* so the retrieved value matches the displayed one, if #GtkScale:draw-value is
|
||
* %TRUE when the value changes. If you want to enforce rounding the value when
|
||
* #GtkScale:draw-value is %FALSE, you can set #GtkRange:round-digits instead.
|
||
*
|
||
* Note that rounding to a small number of digits can interfere with
|
||
* the smooth autoscrolling that is built into #GtkScale. As an alternative,
|
||
* you can use the #GtkScale::format-value signal to format the displayed
|
||
* value yourself.
|
||
*/
|
||
void
|
||
gtk_scale_set_digits (GtkScale *scale,
|
||
gint digits)
|
||
{
|
||
GtkScalePrivate *priv;
|
||
GtkRange *range;
|
||
|
||
g_return_if_fail (GTK_IS_SCALE (scale));
|
||
|
||
priv = scale->priv;
|
||
range = GTK_RANGE (scale);
|
||
|
||
digits = CLAMP (digits, -1, MAX_DIGITS);
|
||
|
||
if (priv->digits != digits)
|
||
{
|
||
priv->digits = digits;
|
||
if (priv->draw_value)
|
||
gtk_range_set_round_digits (range, digits);
|
||
|
||
gtk_widget_queue_resize (GTK_WIDGET (scale));
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (scale), properties[PROP_DIGITS]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_get_digits:
|
||
* @scale: a #GtkScale
|
||
*
|
||
* Gets the number of decimal places that are displayed in the value.
|
||
*
|
||
* Returns: the number of decimal places that are displayed
|
||
*/
|
||
gint
|
||
gtk_scale_get_digits (GtkScale *scale)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_SCALE (scale), -1);
|
||
|
||
return scale->priv->digits;
|
||
}
|
||
|
||
static void
|
||
update_value_position (GtkScale *scale)
|
||
{
|
||
GtkScalePrivate *priv = scale->priv;
|
||
GtkStyleContext *context;
|
||
|
||
if (!priv->value_widget)
|
||
return;
|
||
|
||
context = gtk_widget_get_style_context (priv->value_widget);
|
||
|
||
if (priv->value_pos == GTK_POS_TOP || priv->value_pos == GTK_POS_LEFT)
|
||
{
|
||
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_BOTTOM);
|
||
gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP);
|
||
}
|
||
else
|
||
{
|
||
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_TOP);
|
||
gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_set_draw_value:
|
||
* @scale: a #GtkScale
|
||
* @draw_value: %TRUE to draw the value
|
||
*
|
||
* Specifies whether the current value is displayed as a string next
|
||
* to the slider.
|
||
*/
|
||
void
|
||
gtk_scale_set_draw_value (GtkScale *scale,
|
||
gboolean draw_value)
|
||
{
|
||
GtkScalePrivate *priv;
|
||
GtkWidget *widget;
|
||
|
||
g_return_if_fail (GTK_IS_SCALE (scale));
|
||
|
||
priv = scale->priv;
|
||
widget = GTK_WIDGET (scale);
|
||
|
||
draw_value = draw_value != FALSE;
|
||
|
||
if (priv->draw_value != draw_value)
|
||
{
|
||
priv->draw_value = draw_value;
|
||
if (draw_value)
|
||
{
|
||
char *txt;
|
||
|
||
txt = gtk_scale_format_value (scale,
|
||
gtk_adjustment_get_value (gtk_range_get_adjustment (GTK_RANGE (scale))));
|
||
|
||
priv->value_widget = g_object_new (GTK_TYPE_LABEL,
|
||
"css-name", "value",
|
||
"label", txt,
|
||
NULL);
|
||
|
||
g_free (txt);
|
||
|
||
if (priv->value_pos == GTK_POS_TOP || priv->value_pos == GTK_POS_LEFT)
|
||
gtk_widget_insert_after (priv->value_widget, widget, NULL);
|
||
else
|
||
gtk_widget_insert_before (priv->value_widget, widget, NULL);
|
||
|
||
gtk_range_set_round_digits (GTK_RANGE (scale), priv->digits);
|
||
update_value_position (scale);
|
||
update_label_request (scale);
|
||
}
|
||
else if (priv->value_widget)
|
||
{
|
||
gtk_widget_unparent (priv->value_widget);
|
||
priv->value_widget = NULL;
|
||
gtk_range_set_round_digits (GTK_RANGE (scale), -1);
|
||
}
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (scale), properties[PROP_DRAW_VALUE]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_get_draw_value:
|
||
* @scale: a #GtkScale
|
||
*
|
||
* Returns whether the current value is displayed as a string
|
||
* next to the slider.
|
||
*
|
||
* Returns: whether the current value is displayed as a string
|
||
*/
|
||
gboolean
|
||
gtk_scale_get_draw_value (GtkScale *scale)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_SCALE (scale), FALSE);
|
||
|
||
return scale->priv->draw_value;
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_set_has_origin:
|
||
* @scale: a #GtkScale
|
||
* @has_origin: %TRUE if the scale has an origin
|
||
*
|
||
* If #GtkScale:has-origin is set to %TRUE (the default), the scale will
|
||
* highlight the part of the trough between the origin (bottom or left side)
|
||
* and the current value.
|
||
*
|
||
* Since: 3.4
|
||
*/
|
||
void
|
||
gtk_scale_set_has_origin (GtkScale *scale,
|
||
gboolean has_origin)
|
||
{
|
||
g_return_if_fail (GTK_IS_SCALE (scale));
|
||
|
||
has_origin = has_origin != FALSE;
|
||
|
||
if (_gtk_range_get_has_origin (GTK_RANGE (scale)) != has_origin)
|
||
{
|
||
_gtk_range_set_has_origin (GTK_RANGE (scale), has_origin);
|
||
|
||
gtk_widget_queue_draw (GTK_WIDGET (scale));
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (scale), properties[PROP_HAS_ORIGIN]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_get_has_origin:
|
||
* @scale: a #GtkScale
|
||
*
|
||
* Returns whether the scale has an origin.
|
||
*
|
||
* Returns: %TRUE if the scale has an origin.
|
||
*
|
||
* Since: 3.4
|
||
*/
|
||
gboolean
|
||
gtk_scale_get_has_origin (GtkScale *scale)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_SCALE (scale), FALSE);
|
||
|
||
return _gtk_range_get_has_origin (GTK_RANGE (scale));
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_set_value_pos:
|
||
* @scale: a #GtkScale
|
||
* @pos: the position in which the current value is displayed
|
||
*
|
||
* Sets the position in which the current value is displayed.
|
||
*/
|
||
void
|
||
gtk_scale_set_value_pos (GtkScale *scale,
|
||
GtkPositionType pos)
|
||
{
|
||
GtkScalePrivate *priv;
|
||
GtkWidget *widget;
|
||
|
||
g_return_if_fail (GTK_IS_SCALE (scale));
|
||
|
||
priv = scale->priv;
|
||
|
||
if (priv->value_pos != pos)
|
||
{
|
||
priv->value_pos = pos;
|
||
widget = GTK_WIDGET (scale);
|
||
|
||
update_value_position (scale);
|
||
|
||
if (gtk_widget_get_visible (widget) && gtk_widget_get_mapped (widget))
|
||
gtk_widget_queue_resize (widget);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (scale), properties[PROP_VALUE_POS]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_get_value_pos:
|
||
* @scale: a #GtkScale
|
||
*
|
||
* Gets the position in which the current value is displayed.
|
||
*
|
||
* Returns: the position in which the current value is displayed
|
||
*/
|
||
GtkPositionType
|
||
gtk_scale_get_value_pos (GtkScale *scale)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_SCALE (scale), 0);
|
||
|
||
return scale->priv->value_pos;
|
||
}
|
||
|
||
static void
|
||
gtk_scale_get_range_border (GtkRange *range,
|
||
GtkBorder *border)
|
||
{
|
||
GtkScalePrivate *priv;
|
||
GtkScale *scale;
|
||
|
||
scale = GTK_SCALE (range);
|
||
priv = scale->priv;
|
||
|
||
border->left = 0;
|
||
border->right = 0;
|
||
border->top = 0;
|
||
border->bottom = 0;
|
||
|
||
if (priv->value_widget)
|
||
{
|
||
int value_size;
|
||
GtkOrientation value_orientation;
|
||
|
||
if (priv->value_pos == GTK_POS_LEFT || priv->value_pos == GTK_POS_RIGHT)
|
||
value_orientation = GTK_ORIENTATION_HORIZONTAL;
|
||
else
|
||
value_orientation = GTK_ORIENTATION_VERTICAL;
|
||
|
||
gtk_widget_measure (priv->value_widget,
|
||
value_orientation, -1,
|
||
&value_size, NULL,
|
||
NULL, NULL);
|
||
|
||
switch (priv->value_pos)
|
||
{
|
||
case GTK_POS_LEFT:
|
||
border->left += value_size;
|
||
break;
|
||
case GTK_POS_RIGHT:
|
||
border->right += value_size;
|
||
break;
|
||
case GTK_POS_TOP:
|
||
border->top += value_size;
|
||
break;
|
||
case GTK_POS_BOTTOM:
|
||
border->bottom += value_size;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (gtk_orientable_get_orientation (GTK_ORIENTABLE (range)) == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
int height;
|
||
|
||
if (priv->top_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->top_marks_widget,
|
||
GTK_ORIENTATION_VERTICAL, -1,
|
||
&height, NULL,
|
||
NULL, NULL);
|
||
if (height > 0)
|
||
border->top += height;
|
||
}
|
||
|
||
if (priv->bottom_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->bottom_marks_widget,
|
||
GTK_ORIENTATION_VERTICAL, -1,
|
||
&height, NULL,
|
||
NULL, NULL);
|
||
if (height > 0)
|
||
border->bottom += height;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
int width;
|
||
|
||
if (priv->top_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->top_marks_widget,
|
||
GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&width, NULL,
|
||
NULL, NULL);
|
||
if (width > 0)
|
||
border->left += width;
|
||
}
|
||
|
||
if (priv->bottom_marks_widget)
|
||
{
|
||
gtk_widget_measure (priv->bottom_marks_widget,
|
||
GTK_ORIENTATION_HORIZONTAL, -1,
|
||
&width, NULL,
|
||
NULL, NULL);
|
||
if (width > 0)
|
||
border->right += width;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_get_range_size_request (GtkRange *range,
|
||
GtkOrientation orientation,
|
||
gint *minimum,
|
||
gint *natural)
|
||
{
|
||
GtkScalePrivate *priv = GTK_SCALE (range)->priv;
|
||
|
||
/* Ensure the range requests enough size for our value */
|
||
if (priv->value_widget)
|
||
gtk_widget_measure (priv->value_widget,
|
||
orientation, -1,
|
||
minimum, natural,
|
||
NULL, NULL);
|
||
else
|
||
{
|
||
*minimum = 0;
|
||
*natural = 0;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_measure_mark (GtkGizmo *gizmo,
|
||
GtkOrientation orientation,
|
||
gint for_size,
|
||
gint *minimum,
|
||
gint *natural,
|
||
gint *minimum_baseline,
|
||
gint *natural_baseline)
|
||
{
|
||
GtkScaleMark *mark = g_object_get_data (G_OBJECT (gizmo), "mark");
|
||
|
||
gtk_widget_measure (mark->indicator_widget,
|
||
orientation, -1,
|
||
minimum, natural,
|
||
NULL, NULL);
|
||
|
||
if (mark->label_widget)
|
||
{
|
||
int label_min, label_nat;
|
||
|
||
gtk_widget_measure (mark->label_widget,
|
||
orientation, -1,
|
||
&label_min, &label_nat,
|
||
NULL, NULL);
|
||
*minimum += label_min;
|
||
*natural += label_nat;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_measure_marks (GtkGizmo *gizmo,
|
||
GtkOrientation orientation,
|
||
gint for_size,
|
||
gint *minimum,
|
||
gint *natural,
|
||
gint *minimum_baseline,
|
||
gint *natural_baseline)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (gizmo);
|
||
GtkScale *scale = GTK_SCALE (gtk_widget_get_parent (widget));;
|
||
GtkScalePrivate *priv = scale->priv;
|
||
GtkOrientation scale_orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (scale));
|
||
GSList *m;
|
||
|
||
*minimum = *natural = 0;
|
||
|
||
for (m = priv->marks; m; m = m->next)
|
||
{
|
||
GtkScaleMark *mark = m->data;
|
||
int mark_size;
|
||
|
||
if ((mark->position == GTK_POS_TOP && widget == priv->bottom_marks_widget) ||
|
||
(mark->position == GTK_POS_BOTTOM && widget == priv->top_marks_widget))
|
||
continue;
|
||
|
||
gtk_widget_measure (mark->widget,
|
||
orientation, -1,
|
||
&mark_size, NULL,
|
||
NULL, NULL);
|
||
|
||
if (scale_orientation == orientation)
|
||
{
|
||
*minimum += mark_size;
|
||
*natural += mark_size;
|
||
}
|
||
else
|
||
{
|
||
*minimum = MAX (*minimum, mark_size);
|
||
*natural = MAX (*natural, mark_size);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_measure (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline)
|
||
{
|
||
GtkScale *scale = GTK_SCALE (widget);
|
||
GtkScalePrivate *priv = scale->priv;
|
||
|
||
GTK_WIDGET_CLASS (gtk_scale_parent_class)->measure (widget,
|
||
orientation,
|
||
for_size,
|
||
minimum, natural,
|
||
minimum_baseline, natural_baseline);
|
||
|
||
if (gtk_orientable_get_orientation (GTK_ORIENTABLE (widget)) == orientation)
|
||
{
|
||
int top_marks_size = 0, bottom_marks_size = 0, marks_size;
|
||
|
||
if (priv->top_marks_widget)
|
||
gtk_widget_measure (priv->top_marks_widget,
|
||
orientation, for_size,
|
||
&top_marks_size, NULL,
|
||
NULL, NULL);
|
||
if (priv->bottom_marks_widget)
|
||
gtk_widget_measure (priv->bottom_marks_widget,
|
||
orientation, for_size,
|
||
&bottom_marks_size, NULL,
|
||
NULL, NULL);
|
||
|
||
marks_size = MAX (top_marks_size, bottom_marks_size);
|
||
|
||
*minimum = MAX (*minimum, marks_size);
|
||
*natural = MAX (*natural, marks_size);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_snapshot (GtkWidget *widget,
|
||
GtkSnapshot *snapshot)
|
||
{
|
||
GtkScale *scale = GTK_SCALE (widget);
|
||
GtkScalePrivate *priv = scale->priv;
|
||
|
||
if (priv->top_marks_widget)
|
||
gtk_widget_snapshot_child (widget, priv->top_marks_widget, snapshot);
|
||
|
||
if (priv->bottom_marks_widget)
|
||
gtk_widget_snapshot_child (widget, priv->bottom_marks_widget, snapshot);
|
||
|
||
if (priv->value_widget)
|
||
gtk_widget_snapshot_child (widget, priv->value_widget, snapshot);
|
||
|
||
GTK_WIDGET_CLASS (gtk_scale_parent_class)->snapshot (widget, snapshot);
|
||
}
|
||
|
||
static void
|
||
gtk_scale_real_get_layout_offsets (GtkScale *scale,
|
||
gint *x,
|
||
gint *y)
|
||
{
|
||
GtkScalePrivate *priv = scale->priv;
|
||
GtkAllocation value_alloc;
|
||
|
||
if (!priv->value_widget)
|
||
{
|
||
*x = 0;
|
||
*y = 0;
|
||
|
||
return;
|
||
}
|
||
|
||
gtk_widget_get_content_allocation (priv->value_widget, &value_alloc);
|
||
|
||
*x = value_alloc.x;
|
||
*y = value_alloc.y;
|
||
}
|
||
|
||
static gchar *
|
||
weed_out_neg_zero (gchar *str,
|
||
gint digits)
|
||
{
|
||
if (str[0] == '-')
|
||
{
|
||
gchar neg_zero[8];
|
||
g_snprintf (neg_zero, 8, "%0.*f", digits, -0.0);
|
||
if (strcmp (neg_zero, str) == 0)
|
||
memmove (str, str + 1, strlen (str) - 1);
|
||
}
|
||
return str;
|
||
}
|
||
|
||
/*
|
||
* Emits #GtkScale:format-value signal to format the value;
|
||
* if no user signal handlers, falls back to a default format.
|
||
*
|
||
* Returns: formatted value
|
||
*/
|
||
static gchar *
|
||
gtk_scale_format_value (GtkScale *scale,
|
||
gdouble value)
|
||
{
|
||
gchar *fmt = NULL;
|
||
|
||
g_signal_emit (scale, signals[FORMAT_VALUE], 0, value, &fmt);
|
||
|
||
if (fmt)
|
||
return fmt;
|
||
else
|
||
{
|
||
fmt = g_strdup_printf ("%0.*f", scale->priv->digits, value);
|
||
return weed_out_neg_zero (fmt, scale->priv->digits);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_scale_finalize (GObject *object)
|
||
{
|
||
GtkScale *scale = GTK_SCALE (object);
|
||
GtkScalePrivate *priv = scale->priv;
|
||
|
||
gtk_scale_clear_marks (scale);
|
||
|
||
if (priv->value_widget)
|
||
gtk_widget_unparent (priv->value_widget);
|
||
|
||
G_OBJECT_CLASS (gtk_scale_parent_class)->finalize (object);
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_get_layout:
|
||
* @scale: A #GtkScale
|
||
*
|
||
* Gets the #PangoLayout used to display the scale. The returned
|
||
* object is owned by the scale so does not need to be freed by
|
||
* the caller.
|
||
*
|
||
* Returns: (transfer none) (nullable): the #PangoLayout for this scale,
|
||
* or %NULL if the #GtkScale:draw-value property is %FALSE.
|
||
*
|
||
* Since: 2.4
|
||
*/
|
||
PangoLayout *
|
||
gtk_scale_get_layout (GtkScale *scale)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_SCALE (scale), NULL);
|
||
|
||
if (scale->priv->value_widget)
|
||
return gtk_label_get_layout (GTK_LABEL (scale->priv->value_widget));
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_get_layout_offsets:
|
||
* @scale: a #GtkScale
|
||
* @x: (out) (allow-none): location to store X offset of layout, or %NULL
|
||
* @y: (out) (allow-none): location to store Y offset of layout, or %NULL
|
||
*
|
||
* Obtains the coordinates where the scale will draw the
|
||
* #PangoLayout representing the text in the scale. Remember
|
||
* when using the #PangoLayout function you need to convert to
|
||
* and from pixels using PANGO_PIXELS() or #PANGO_SCALE.
|
||
*
|
||
* If the #GtkScale:draw-value property is %FALSE, the return
|
||
* values are undefined.
|
||
*
|
||
* Since: 2.4
|
||
*/
|
||
void
|
||
gtk_scale_get_layout_offsets (GtkScale *scale,
|
||
gint *x,
|
||
gint *y)
|
||
{
|
||
gint local_x = 0;
|
||
gint local_y = 0;
|
||
|
||
g_return_if_fail (GTK_IS_SCALE (scale));
|
||
|
||
if (GTK_SCALE_GET_CLASS (scale)->get_layout_offsets)
|
||
(GTK_SCALE_GET_CLASS (scale)->get_layout_offsets) (scale, &local_x, &local_y);
|
||
|
||
if (x)
|
||
*x = local_x;
|
||
|
||
if (y)
|
||
*y = local_y;
|
||
}
|
||
|
||
static void
|
||
gtk_scale_mark_free (gpointer data)
|
||
{
|
||
GtkScaleMark *mark = data;
|
||
|
||
if (mark->label_widget)
|
||
gtk_widget_unparent (mark->label_widget);
|
||
|
||
gtk_widget_unparent (mark->indicator_widget);
|
||
gtk_widget_unparent (mark->widget);
|
||
g_free (mark->markup);
|
||
g_free (mark);
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_clear_marks:
|
||
* @scale: a #GtkScale
|
||
*
|
||
* Removes any marks that have been added with gtk_scale_add_mark().
|
||
*
|
||
* Since: 2.16
|
||
*/
|
||
void
|
||
gtk_scale_clear_marks (GtkScale *scale)
|
||
{
|
||
GtkScalePrivate *priv;
|
||
GtkStyleContext *context;
|
||
|
||
g_return_if_fail (GTK_IS_SCALE (scale));
|
||
|
||
priv = scale->priv;
|
||
|
||
g_slist_free_full (priv->marks, gtk_scale_mark_free);
|
||
priv->marks = NULL;
|
||
|
||
if (priv->top_marks_widget)
|
||
{
|
||
gtk_widget_unparent (priv->top_marks_widget);
|
||
priv->top_marks_widget = NULL;
|
||
}
|
||
|
||
if (priv->bottom_marks_widget)
|
||
{
|
||
gtk_widget_unparent (priv->bottom_marks_widget);
|
||
priv->bottom_marks_widget = NULL;
|
||
}
|
||
|
||
context = gtk_widget_get_style_context (GTK_WIDGET (scale));
|
||
gtk_style_context_remove_class (context, "marks-before");
|
||
gtk_style_context_remove_class (context, "marks-after");
|
||
|
||
_gtk_range_set_stop_values (GTK_RANGE (scale), NULL, 0);
|
||
|
||
gtk_widget_queue_resize (GTK_WIDGET (scale));
|
||
}
|
||
|
||
/**
|
||
* gtk_scale_add_mark:
|
||
* @scale: a #GtkScale
|
||
* @value: the value at which the mark is placed, must be between
|
||
* the lower and upper limits of the scales’ adjustment
|
||
* @position: where to draw the mark. For a horizontal scale, #GTK_POS_TOP
|
||
* and %GTK_POS_LEFT are drawn above the scale, anything else below.
|
||
* For a vertical scale, #GTK_POS_LEFT and %GTK_POS_TOP are drawn to
|
||
* the left of the scale, anything else to the right.
|
||
* @markup: (allow-none): Text to be shown at the mark, using [Pango markup][PangoMarkupFormat], or %NULL
|
||
*
|
||
*
|
||
* Adds a mark at @value.
|
||
*
|
||
* A mark is indicated visually by drawing a tick mark next to the scale,
|
||
* and GTK+ makes it easy for the user to position the scale exactly at the
|
||
* marks value.
|
||
*
|
||
* If @markup is not %NULL, text is shown next to the tick mark.
|
||
*
|
||
* To remove marks from a scale, use gtk_scale_clear_marks().
|
||
*
|
||
* Since: 2.16
|
||
*/
|
||
void
|
||
gtk_scale_add_mark (GtkScale *scale,
|
||
gdouble value,
|
||
GtkPositionType position,
|
||
const gchar *markup)
|
||
{
|
||
GtkWidget *widget;
|
||
GtkScalePrivate *priv;
|
||
GtkScaleMark *mark;
|
||
GSList *m;
|
||
gdouble *values;
|
||
gint n, i;
|
||
GtkStyleContext *context;
|
||
GtkWidget *marks_widget;
|
||
|
||
g_return_if_fail (GTK_IS_SCALE (scale));
|
||
|
||
priv = scale->priv;
|
||
widget = GTK_WIDGET (scale);
|
||
|
||
mark = g_new0 (GtkScaleMark, 1);
|
||
mark->value = value;
|
||
mark->markup = g_strdup (markup);
|
||
if (position == GTK_POS_LEFT ||
|
||
position == GTK_POS_TOP)
|
||
mark->position = GTK_POS_TOP;
|
||
else
|
||
mark->position = GTK_POS_BOTTOM;
|
||
|
||
priv->marks = g_slist_insert_sorted_with_data (priv->marks, mark,
|
||
compare_marks,
|
||
GINT_TO_POINTER (gtk_range_get_inverted (GTK_RANGE (scale))));
|
||
|
||
if (mark->position == GTK_POS_TOP)
|
||
{
|
||
if (!priv->top_marks_widget)
|
||
{
|
||
priv->top_marks_widget = gtk_gizmo_new ("marks",
|
||
gtk_scale_measure_marks,
|
||
gtk_scale_allocate_marks,
|
||
NULL);
|
||
|
||
gtk_widget_insert_after (priv->top_marks_widget,
|
||
GTK_WIDGET (scale),
|
||
(priv->value_widget &&
|
||
(priv->value_pos == GTK_POS_TOP || priv->value_pos == GTK_POS_LEFT)) ?
|
||
priv->value_widget : NULL);
|
||
gtk_style_context_add_class (gtk_widget_get_style_context (priv->top_marks_widget),
|
||
GTK_STYLE_CLASS_TOP);
|
||
}
|
||
marks_widget = priv->top_marks_widget;
|
||
}
|
||
else
|
||
{
|
||
if (!priv->bottom_marks_widget)
|
||
{
|
||
priv->bottom_marks_widget = gtk_gizmo_new ("marks",
|
||
gtk_scale_measure_marks,
|
||
gtk_scale_allocate_marks,
|
||
NULL);
|
||
|
||
gtk_widget_insert_before (priv->bottom_marks_widget,
|
||
GTK_WIDGET (scale),
|
||
(priv->value_widget &&
|
||
(priv->value_pos == GTK_POS_BOTTOM || priv->value_pos == GTK_POS_RIGHT)) ?
|
||
priv->value_widget: NULL);
|
||
gtk_style_context_add_class (gtk_widget_get_style_context (priv->bottom_marks_widget),
|
||
GTK_STYLE_CLASS_BOTTOM);
|
||
}
|
||
marks_widget = priv->bottom_marks_widget;
|
||
}
|
||
|
||
mark->widget = gtk_gizmo_new ("mark",
|
||
gtk_scale_measure_mark,
|
||
gtk_scale_allocate_mark,
|
||
NULL);
|
||
g_object_set_data (G_OBJECT (mark->widget), "mark", mark);
|
||
|
||
mark->indicator_widget = gtk_gizmo_new ("indicator",
|
||
NULL,
|
||
NULL,
|
||
NULL);
|
||
gtk_widget_set_parent (mark->indicator_widget, mark->widget);
|
||
if (mark->markup && *mark->markup)
|
||
{
|
||
mark->label_widget = g_object_new (GTK_TYPE_LABEL,
|
||
"css-name", "label",
|
||
"use-markup", TRUE,
|
||
"label", mark->markup,
|
||
NULL);
|
||
if (marks_widget == priv->top_marks_widget)
|
||
gtk_widget_insert_after (mark->label_widget, mark->widget, NULL);
|
||
else
|
||
gtk_widget_insert_before (mark->label_widget, mark->widget, NULL);
|
||
}
|
||
|
||
m = g_slist_find (priv->marks, mark);
|
||
m = m->next;
|
||
while (m)
|
||
{
|
||
GtkScaleMark *next = m->data;
|
||
if (next->position == mark->position)
|
||
break;
|
||
m = m->next;
|
||
}
|
||
|
||
if (m)
|
||
{
|
||
GtkScaleMark *next = m->data;
|
||
gtk_widget_insert_before (mark->widget, marks_widget, next->widget);
|
||
}
|
||
else
|
||
{
|
||
gtk_widget_set_parent (mark->widget, marks_widget);
|
||
}
|
||
|
||
n = g_slist_length (priv->marks);
|
||
values = g_new (gdouble, n);
|
||
for (m = priv->marks, i = 0; m; m = m->next, i++)
|
||
{
|
||
mark = m->data;
|
||
values[i] = mark->value;
|
||
}
|
||
|
||
_gtk_range_set_stop_values (GTK_RANGE (scale), values, n);
|
||
|
||
g_free (values);
|
||
|
||
context = gtk_widget_get_style_context (GTK_WIDGET (scale));
|
||
if (priv->top_marks_widget)
|
||
gtk_style_context_add_class (context, "marks-before");
|
||
if (priv->bottom_marks_widget)
|
||
gtk_style_context_add_class (context, "marks-after");
|
||
|
||
gtk_widget_queue_resize (widget);
|
||
}
|
||
|
||
static GtkBuildableIface *parent_buildable_iface;
|
||
|
||
static void
|
||
gtk_scale_buildable_interface_init (GtkBuildableIface *iface)
|
||
{
|
||
parent_buildable_iface = g_type_interface_peek_parent (iface);
|
||
iface->custom_tag_start = gtk_scale_buildable_custom_tag_start;
|
||
iface->custom_finished = gtk_scale_buildable_custom_finished;
|
||
}
|
||
|
||
typedef struct
|
||
{
|
||
GtkScale *scale;
|
||
GtkBuilder *builder;
|
||
GSList *marks;
|
||
} MarksSubparserData;
|
||
|
||
typedef struct
|
||
{
|
||
gdouble value;
|
||
GtkPositionType position;
|
||
GString *markup;
|
||
gchar *context;
|
||
gboolean translatable;
|
||
} MarkData;
|
||
|
||
static void
|
||
mark_data_free (MarkData *data)
|
||
{
|
||
g_string_free (data->markup, TRUE);
|
||
g_free (data->context);
|
||
g_slice_free (MarkData, data);
|
||
}
|
||
|
||
static void
|
||
marks_start_element (GMarkupParseContext *context,
|
||
const gchar *element_name,
|
||
const gchar **names,
|
||
const gchar **values,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
MarksSubparserData *data = (MarksSubparserData*)user_data;
|
||
|
||
if (strcmp (element_name, "marks") == 0)
|
||
{
|
||
if (!_gtk_builder_check_parent (data->builder, context, "object", error))
|
||
return;
|
||
|
||
if (!g_markup_collect_attributes (element_name, names, values, error,
|
||
G_MARKUP_COLLECT_INVALID, NULL, NULL,
|
||
G_MARKUP_COLLECT_INVALID))
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
}
|
||
else if (strcmp (element_name, "mark") == 0)
|
||
{
|
||
const gchar *value_str;
|
||
gdouble value = 0;
|
||
const gchar *position_str = NULL;
|
||
GtkPositionType position = GTK_POS_BOTTOM;
|
||
const gchar *msg_context = NULL;
|
||
gboolean translatable = FALSE;
|
||
MarkData *mark;
|
||
|
||
if (!_gtk_builder_check_parent (data->builder, context, "marks", error))
|
||
return;
|
||
|
||
if (!g_markup_collect_attributes (element_name, names, values, error,
|
||
G_MARKUP_COLLECT_STRING, "value", &value_str,
|
||
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "translatable", &translatable,
|
||
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "comments", NULL,
|
||
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "context", &msg_context,
|
||
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "position", &position_str,
|
||
G_MARKUP_COLLECT_INVALID))
|
||
{
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
return;
|
||
}
|
||
|
||
if (value_str != NULL)
|
||
{
|
||
GValue gvalue = G_VALUE_INIT;
|
||
|
||
if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_DOUBLE, value_str, &gvalue, error))
|
||
{
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
return;
|
||
}
|
||
|
||
value = g_value_get_double (&gvalue);
|
||
}
|
||
|
||
if (position_str != NULL)
|
||
{
|
||
GValue gvalue = G_VALUE_INIT;
|
||
|
||
if (!gtk_builder_value_from_string_type (data->builder, GTK_TYPE_POSITION_TYPE, position_str, &gvalue, error))
|
||
{
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
return;
|
||
}
|
||
|
||
position = g_value_get_enum (&gvalue);
|
||
}
|
||
|
||
mark = g_slice_new (MarkData);
|
||
mark->value = value;
|
||
if (position == GTK_POS_LEFT || position == GTK_POS_TOP)
|
||
mark->position = GTK_POS_TOP;
|
||
else
|
||
mark->position = GTK_POS_BOTTOM;
|
||
mark->markup = g_string_new ("");
|
||
mark->context = g_strdup (msg_context);
|
||
mark->translatable = translatable;
|
||
|
||
data->marks = g_slist_prepend (data->marks, mark);
|
||
}
|
||
else
|
||
{
|
||
_gtk_builder_error_unhandled_tag (data->builder, context,
|
||
"GtkScale", element_name,
|
||
error);
|
||
}
|
||
}
|
||
|
||
static void
|
||
marks_text (GMarkupParseContext *context,
|
||
const gchar *text,
|
||
gsize text_len,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
MarksSubparserData *data = (MarksSubparserData*)user_data;
|
||
|
||
if (strcmp (g_markup_parse_context_get_element (context), "mark") == 0)
|
||
{
|
||
MarkData *mark = data->marks->data;
|
||
|
||
g_string_append_len (mark->markup, text, text_len);
|
||
}
|
||
}
|
||
|
||
static const GMarkupParser marks_parser =
|
||
{
|
||
marks_start_element,
|
||
NULL,
|
||
marks_text,
|
||
};
|
||
|
||
|
||
static gboolean
|
||
gtk_scale_buildable_custom_tag_start (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
GMarkupParser *parser,
|
||
gpointer *parser_data)
|
||
{
|
||
MarksSubparserData *data;
|
||
|
||
if (child)
|
||
return FALSE;
|
||
|
||
if (strcmp (tagname, "marks") == 0)
|
||
{
|
||
data = g_slice_new0 (MarksSubparserData);
|
||
data->scale = GTK_SCALE (buildable);
|
||
data->builder = builder;
|
||
data->marks = NULL;
|
||
|
||
*parser = marks_parser;
|
||
*parser_data = data;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
return parent_buildable_iface->custom_tag_start (buildable, builder, child,
|
||
tagname, parser, parser_data);
|
||
}
|
||
|
||
static void
|
||
gtk_scale_buildable_custom_finished (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer user_data)
|
||
{
|
||
GtkScale *scale = GTK_SCALE (buildable);
|
||
MarksSubparserData *marks_data;
|
||
|
||
if (strcmp (tagname, "marks") == 0)
|
||
{
|
||
GSList *m;
|
||
const gchar *markup;
|
||
|
||
marks_data = (MarksSubparserData *)user_data;
|
||
|
||
for (m = marks_data->marks; m; m = m->next)
|
||
{
|
||
MarkData *mdata = m->data;
|
||
|
||
if (mdata->translatable && mdata->markup->len)
|
||
markup = _gtk_builder_parser_translate (gtk_builder_get_translation_domain (builder),
|
||
mdata->context,
|
||
mdata->markup->str);
|
||
else
|
||
markup = mdata->markup->str;
|
||
|
||
gtk_scale_add_mark (scale, mdata->value, mdata->position, markup);
|
||
|
||
mark_data_free (mdata);
|
||
}
|
||
|
||
g_slist_free (marks_data->marks);
|
||
g_slice_free (MarksSubparserData, marks_data);
|
||
}
|
||
else
|
||
{
|
||
parent_buildable_iface->custom_finished (buildable, builder, child,
|
||
tagname, user_data);
|
||
}
|
||
|
||
}
|