gtk2/gtk/gtkscale.c

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1997-11-24 22:37:52 +00:00
/* 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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
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*/
#include <math.h>
#include "gtkcontainer.h"
#include "gtkscale.h"
#define SCALE_CLASS(w) GTK_SCALE_CLASS (GTK_OBJECT (w)->klass)
static void gtk_scale_class_init (GtkScaleClass *klass);
static void gtk_scale_init (GtkScale *scale);
static void gtk_scale_draw_background (GtkRange *range);
static GtkRangeClass *parent_class = NULL;
guint
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gtk_scale_get_type (void)
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{
static guint scale_type = 0;
if (!scale_type)
{
GtkTypeInfo scale_info =
{
"GtkScale",
sizeof (GtkScale),
sizeof (GtkScaleClass),
(GtkClassInitFunc) gtk_scale_class_init,
(GtkObjectInitFunc) gtk_scale_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
call the base class init fucntions from all parent types upon class Sun Jun 28 04:29:10 1998 Tim Janik <timj@gtk.org> * gtk/gtktypeutils.c (gtk_type_class_init): call the base class init fucntions from all parent types upon class initialization. * gtk/gtkcontainer.c: (gtk_container_get_type): announce gtk_container_base_class_init to the type system. (gtk_container_base_class_init): new function to feature base class initialization. (gtk_container_get_child_arg): (gtk_container_set_child_arg): call the GtkContainerClass get_child_arg and set_child_arg methods of the class indicated through the argument name. * gtk/gtkobject.c: (gtk_object_base_class_init): new function to feature base class initialization. (gtk_object_init_type): announce gtk_object_base_class_init to the type system. (gtk_object_class_init): setup the get_arg and set_arg pointers for GtkObjectClass. (gtk_object_setv): (gtk_object_getv): call the GtkObjectClass get_arg and set_arg methods, instead of bothering the type system with this. * gtk/gtkaccellabel.c: * gtk/gtkbutton.c: * gtk/gtkradiobutton.c: * gtk/gtktable.c: * gtk/gtktogglebutton.c: * gtk/gtktipsquery.c: * gtk/gtkbox.c: * gtk/gtkpacker.c: * gtk/gtkwidget.c: * gtk/gtkwindow.c: * gtk/gtkframe.c: * gtk/gtkmisc.c: * gtk/gtklabel.c: set the object_class->{g|s}et_arg pointers to the corresponding gtk_*_{g|s]et_arg functions and updated the gtk_*_get_type functions wrt GtkTypeInfo initialization. changed a lot of the set/get arg functions to take a GtkObject argument. gtk/gtkadjustment.c: gtk/gtkalignment.c: gtk/gtkarrow.c: gtk/gtkaspectframe.c: gtk/gtkbbox.c: gtk/gtkbin.c: gtk/gtkcheckbutton.c: gtk/gtkcheckmenuitem.c: gtk/gtkclist.c: gtk/gtkcolorsel.c: gtk/gtkcombo.c: gtk/gtkctree.c: gtk/gtkcurve.c: gtk/gtkdata.c: gtk/gtkdialog.c: gtk/gtkdrawingarea.c: gtk/gtkeditable.c: gtk/gtkentry.c: gtk/gtkeventbox.c: gtk/gtkfilesel.c: gtk/gtkfixed.c: gtk/gtkfontsel.c: gtk/gtkgamma.c: gtk/gtkhandlebox.c: gtk/gtkhbbox.c: gtk/gtkhbox.c: gtk/gtkhpaned.c: gtk/gtkhruler.c: gtk/gtkhscale.c: gtk/gtkhscrollbar.c: gtk/gtkhseparator.c: gtk/gtkimage.c: gtk/gtkinputdialog.c: gtk/gtkitem.c: gtk/gtkitemfactory.c: gtk/gtklist.c: gtk/gtklistitem.c: gtk/gtkmenu.c: gtk/gtkmenubar.c: gtk/gtkmenuitem.c: gtk/gtkmenushell.c: gtk/gtknotebook.c: gtk/gtkoptionmenu.c: gtk/gtkpaned.c: gtk/gtkpixmap.c: gtk/gtkpreview.c: gtk/gtkprogressbar.c: gtk/gtkradiomenuitem.c: gtk/gtkrange.c: gtk/gtkruler.c: gtk/gtkscale.c: gtk/gtkscrollbar.c: gtk/gtkscrolledwindow.c: gtk/gtkseparator.c: gtk/gtkspinbutton.c: gtk/gtkstatusbar.c: gtk/gtktext.c: gtk/gtktoolbar.c: gtk/gtktooltips.c: gtk/gtktree.c: gtk/gtktreeitem.c: gtk/gtkvbbox.c: gtk/gtkvbox.c: gtk/gtkviewport.c: gtk/gtkvpaned.c: gtk/gtkvruler.c: gtk/gtkvscale.c: gtk/gtkvscrollbar.c: gtk/gtkvseparator.c: updated the GtkTypeInfo initialization code to match the modified GtkTypeInfo structure.
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(GtkClassInitFunc) NULL,
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};
scale_type = gtk_type_unique (gtk_range_get_type (), &scale_info);
}
return scale_type;
}
static void
gtk_scale_class_init (GtkScaleClass *class)
{
GtkObjectClass *object_class;
GtkRangeClass *range_class;
object_class = (GtkObjectClass*) class;
range_class = (GtkRangeClass*) class;
parent_class = gtk_type_class (gtk_range_get_type ());
range_class->draw_background = gtk_scale_draw_background;
class->slider_length = 31;
class->value_spacing = 2;
class->draw_value = NULL;
}
static void
gtk_scale_init (GtkScale *scale)
{
GTK_WIDGET_SET_FLAGS (scale, GTK_CAN_FOCUS);
GTK_RANGE (scale)->digits = 1;
scale->draw_value = TRUE;
scale->value_pos = GTK_POS_TOP;
}
void
gtk_scale_set_digits (GtkScale *scale,
gint digits)
{
g_return_if_fail (scale != NULL);
g_return_if_fail (GTK_IS_SCALE (scale));
if (GTK_RANGE (scale)->digits != digits)
{
GTK_RANGE (scale)->digits = digits;
if (GTK_WIDGET_VISIBLE (scale) && GTK_WIDGET_MAPPED (scale))
gtk_widget_queue_resize (GTK_WIDGET (scale));
}
}
void
gtk_scale_set_draw_value (GtkScale *scale,
gint draw_value)
{
g_return_if_fail (scale != NULL);
g_return_if_fail (GTK_IS_SCALE (scale));
if (scale->draw_value != draw_value)
{
scale->draw_value = (draw_value != 0);
if (GTK_WIDGET_VISIBLE (scale) && GTK_WIDGET_MAPPED (scale))
gtk_widget_queue_resize (GTK_WIDGET (scale));
}
}
void
gtk_scale_set_value_pos (GtkScale *scale,
GtkPositionType pos)
{
g_return_if_fail (scale != NULL);
g_return_if_fail (GTK_IS_SCALE (scale));
if (scale->value_pos != pos)
{
scale->value_pos = pos;
if (GTK_WIDGET_VISIBLE (scale) && GTK_WIDGET_MAPPED (scale))
gtk_widget_queue_resize (GTK_WIDGET (scale));
}
}
gint
gtk_scale_value_width (GtkScale *scale)
{
GtkRange *range;
gchar buffer[128];
gfloat value;
gint temp;
gint return_val;
gint digits;
gint i, j;
g_return_val_if_fail (scale != NULL, 0);
g_return_val_if_fail (GTK_IS_SCALE (scale), 0);
return_val = 0;
if (scale->draw_value)
{
range = GTK_RANGE (scale);
value = ABS (range->adjustment->lower);
if (value == 0) value = 1;
digits = log10 (value) + 1;
if (digits > 13)
digits = 13;
i = 0;
if (range->adjustment->lower < 0)
buffer[i++] = '-';
for (j = 0; j < digits; j++)
buffer[i++] = '0';
if (GTK_RANGE (scale)->digits)
buffer[i++] = '.';
for (j = 0; j < GTK_RANGE (scale)->digits; j++)
buffer[i++] = '0';
buffer[i] = '\0';
return_val = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
value = ABS (range->adjustment->upper);
if (value == 0) value = 1;
digits = log10 (value) + 1;
if (digits > 13)
digits = 13;
i = 0;
if (range->adjustment->lower < 0)
buffer[i++] = '-';
for (j = 0; j < digits; j++)
buffer[i++] = '0';
if (GTK_RANGE (scale)->digits)
buffer[i++] = '.';
for (j = 0; j < GTK_RANGE (scale)->digits; j++)
buffer[i++] = '0';
buffer[i] = '\0';
temp = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
return_val = MAX (return_val, temp);
}
return return_val;
}
void
gtk_scale_draw_value (GtkScale *scale)
{
g_return_if_fail (scale != NULL);
g_return_if_fail (GTK_IS_SCALE (scale));
if (SCALE_CLASS (scale)->draw_value)
(* SCALE_CLASS (scale)->draw_value) (scale);
}
static void
gtk_scale_draw_background (GtkRange *range)
{
g_return_if_fail (range != NULL);
g_return_if_fail (GTK_IS_SCALE (range));
gtk_scale_draw_value (GTK_SCALE (range));
}