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3779493d173ebd1e51016b68440d7bc9d9f51b7e
gtk3/gtk/gtkruler.c
Owen Taylor 11d37c5067 gtkbutton.c gtkclist.c gtkdrawingarea.c gtkentry.c gtkeventbox.c 
Sun Jan 18 09:57:00 1998  Owen Taylor  <owt1@cornell.edu>
* gtkbutton.c gtkclist.c gtkdrawingarea.c gtkentry.c gtkeventbox.c
  gtkfixed.c gtkhandlebox.c gtkhscale.c gtkhscrollbar.c gtkitem.c
  gtklist.c gtkmenushell.c gtkmisc.c gtknotebook.c gtkpaned.c
  gtkpreview.c gtkprogressbar.c gtkruler.c gtktext.c gtktree.c
  gtkviewport.c gtkvscale.c gtkvscrollbar.c gtkwidget.{c,h}

  Added gtk_widget_set_parent and gtk_widget_get_parent. All
  widgets should use:

   gtk_widget_get_parent() instead of widget->parent->window.

  Any widget that wants to have children not in the parent window,
  should use gtk_widget_set_parent () in their realize() and
  add () routines.

  CList and Viewport widgets changed to do this. (Viewport
  widget using code from gtk-fortier-980117-0.patch.)
1998-01-18 15:09:10 +00:00

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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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "gtkruler.h"
static void gtk_ruler_class_init (GtkRulerClass *klass);
static void gtk_ruler_init (GtkRuler *ruler);
static void gtk_ruler_realize (GtkWidget *widget);
static void gtk_ruler_unrealize (GtkWidget *widget);
static void gtk_ruler_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_ruler_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_ruler_make_pixmap (GtkRuler *ruler);
static GtkRulerMetric ruler_metrics[] =
{
{"Pixels", "Pi", 1.0, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }},
{"Inches", "In", 72.0, { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 }, { 1, 2, 4, 8, 16 }},
{"Centimeters", "Cn", 28.35, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }},
};
guint
gtk_ruler_get_type ()
{
static guint ruler_type = 0;
if (!ruler_type)
{
GtkTypeInfo ruler_info =
{
"GtkRuler",
sizeof (GtkRuler),
sizeof (GtkRulerClass),
(GtkClassInitFunc) gtk_ruler_class_init,
(GtkObjectInitFunc) gtk_ruler_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
ruler_type = gtk_type_unique (gtk_widget_get_type (), &ruler_info);
}
return ruler_type;
}
static void
gtk_ruler_class_init (GtkRulerClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
widget_class->realize = gtk_ruler_realize;
widget_class->unrealize = gtk_ruler_unrealize;
widget_class->size_allocate = gtk_ruler_size_allocate;
widget_class->expose_event = gtk_ruler_expose;
class->draw_ticks = NULL;
class->draw_pos = NULL;
}
static void
gtk_ruler_init (GtkRuler *ruler)
{
ruler->backing_store = NULL;
ruler->non_gr_exp_gc = NULL;
ruler->xsrc = 0;
ruler->ysrc = 0;
ruler->slider_size = 0;
ruler->lower = 0;
ruler->upper = 0;
ruler->position = 0;
ruler->max_size = 0;
gtk_ruler_set_metric (ruler, GTK_PIXELS);
}
void
gtk_ruler_set_metric (GtkRuler *ruler,
GtkMetricType metric)
{
g_return_if_fail (ruler != NULL);
g_return_if_fail (GTK_IS_RULER (ruler));
ruler->metric = &ruler_metrics[metric];
if (GTK_WIDGET_DRAWABLE (ruler))
gtk_widget_queue_draw (GTK_WIDGET (ruler));
}
void
gtk_ruler_set_range (GtkRuler *ruler,
gfloat lower,
gfloat upper,
gfloat position,
gfloat max_size)
{
g_return_if_fail (ruler != NULL);
g_return_if_fail (GTK_IS_RULER (ruler));
ruler->lower = lower;
ruler->upper = upper;
ruler->position = position;
ruler->max_size = max_size;
if (GTK_WIDGET_DRAWABLE (ruler))
gtk_widget_queue_draw (GTK_WIDGET (ruler));
}
void
gtk_ruler_draw_ticks (GtkRuler *ruler)
{
g_return_if_fail (ruler != NULL);
g_return_if_fail (GTK_IS_RULER (ruler));
if (GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_ticks)
(* GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_ticks) (ruler);
}
void
gtk_ruler_draw_pos (GtkRuler *ruler)
{
g_return_if_fail (ruler != NULL);
g_return_if_fail (GTK_IS_RULER (ruler));
if (GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_pos)
(* GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_pos) (ruler);
}
static void
gtk_ruler_realize (GtkWidget *widget)
{
GtkRuler *ruler;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_RULER (widget));
ruler = GTK_RULER (widget);
GTK_WIDGET_SET_FLAGS (ruler, GTK_REALIZED);
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 |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_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, ruler);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
gtk_ruler_make_pixmap (ruler);
}
static void
gtk_ruler_unrealize (GtkWidget *widget)
{
GtkRuler *ruler;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_RULER (widget));
ruler = GTK_RULER (widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED | GTK_MAPPED);
gtk_style_detach (widget->style);
gdk_window_destroy (widget->window);
widget->window = NULL;
if (ruler->backing_store)
gdk_pixmap_unref (ruler->backing_store);
if (ruler->non_gr_exp_gc)
gdk_gc_destroy (ruler->non_gr_exp_gc);
ruler->backing_store = NULL;
ruler->non_gr_exp_gc = NULL;
}
static void
gtk_ruler_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkRuler *ruler;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_RULER (widget));
ruler = GTK_RULER (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gtk_ruler_make_pixmap (ruler);
}
}
static gint
gtk_ruler_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkRuler *ruler;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_RULER (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
ruler = GTK_RULER (widget);
gdk_draw_rectangle (ruler->backing_store,
widget->style->bg_gc[GTK_STATE_NORMAL],
TRUE, 0, 0,
widget->allocation.width,
widget->allocation.height);
gtk_ruler_draw_ticks (ruler);
gtk_draw_shadow (widget->style, ruler->backing_store,
GTK_STATE_NORMAL, GTK_SHADOW_OUT, 0, 0,
widget->allocation.width,
widget->allocation.height);
gdk_draw_pixmap (widget->window,
ruler->non_gr_exp_gc,
ruler->backing_store,
0, 0, 0, 0,
widget->allocation.width,
widget->allocation.height);
gtk_ruler_draw_pos (ruler);
}
return FALSE;
}
static void
gtk_ruler_make_pixmap (GtkRuler *ruler)
{
GtkWidget *widget;
gint width;
gint height;
widget = GTK_WIDGET (ruler);
if (ruler->backing_store)
{
gdk_window_get_size (ruler->backing_store, &width, &height);
if ((width == widget->allocation.width) &&
(height == widget->allocation.height))
return;
gdk_pixmap_unref (ruler->backing_store);
}
ruler->backing_store = gdk_pixmap_new (widget->window,
widget->allocation.width,
widget->allocation.height,
-1);
ruler->xsrc = 0;
ruler->ysrc = 0;
if (!ruler->non_gr_exp_gc)
{
ruler->non_gr_exp_gc = gdk_gc_new (widget->window);
gdk_gc_set_exposures (ruler->non_gr_exp_gc, FALSE);
}
}
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