* 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
+ * 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
- * Library General Public License for more details.
+ * Lesser 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.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
*/
-#include <math.h>
-#include <stdio.h>
-#include <string.h>
-#include "gtkvruler.h"
-
-
-#define RULER_WIDTH 14
-#define MINIMUM_INCR 5
-#define MAXIMUM_SUBDIVIDE 5
-#define MAXIMUM_SCALES 10
-
-#define ROUND(x) ((int) ((x) + 0.5))
+/*
+ * 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/.
+ */
-static void gtk_vruler_class_init (GtkVRulerClass *klass);
-static void gtk_vruler_init (GtkVRuler *vruler);
-static gint gtk_vruler_motion_notify (GtkWidget *widget,
- GdkEventMotion *event);
-static void gtk_vruler_draw_ticks (GtkRuler *ruler);
-static void gtk_vruler_draw_pos (GtkRuler *ruler);
-
-
-guint
-gtk_vruler_get_type ()
-{
- static guint vruler_type = 0;
-
- if (!vruler_type)
- {
- GtkTypeInfo vruler_info =
- {
- "GtkVRuler",
- sizeof (GtkVRuler),
- sizeof (GtkVRulerClass),
- (GtkClassInitFunc) gtk_vruler_class_init,
- (GtkObjectInitFunc) gtk_vruler_init,
- (GtkArgSetFunc) NULL,
- (GtkArgGetFunc) NULL,
- };
+#include "config.h"
- vruler_type = gtk_type_unique (gtk_ruler_get_type (), &vruler_info);
- }
+#include "gtkorientable.h"
+#include "gtkvruler.h"
+#include "gtkalias.h"
- return vruler_type;
-}
+G_DEFINE_TYPE (GtkVRuler, gtk_vruler, GTK_TYPE_RULER)
static void
gtk_vruler_class_init (GtkVRulerClass *klass)
{
- GtkWidgetClass *widget_class;
- GtkRulerClass *ruler_class;
-
- widget_class = (GtkWidgetClass*) klass;
- ruler_class = (GtkRulerClass*) klass;
-
- widget_class->motion_notify_event = gtk_vruler_motion_notify;
-
- ruler_class->draw_ticks = gtk_vruler_draw_ticks;
- ruler_class->draw_pos = gtk_vruler_draw_pos;
}
static void
gtk_vruler_init (GtkVRuler *vruler)
{
- GtkWidget *widget;
-
- widget = GTK_WIDGET (vruler);
- widget->requisition.width = widget->style->klass->xthickness * 2 + RULER_WIDTH;
- widget->requisition.height = widget->style->klass->ythickness * 2 + 1;
+ gtk_orientable_set_orientation (GTK_ORIENTABLE (vruler),
+ GTK_ORIENTATION_VERTICAL);
}
-GtkWidget*
-gtk_vruler_new ()
+GtkWidget *
+gtk_vruler_new (void)
{
- return GTK_WIDGET (gtk_type_new (gtk_vruler_get_type ()));
+ return g_object_new (GTK_TYPE_VRULER, NULL);
}
-
-static gint
-gtk_vruler_motion_notify (GtkWidget *widget,
- GdkEventMotion *event)
-{
- GtkRuler *ruler;
- gint y;
-
- g_return_val_if_fail (widget != NULL, FALSE);
- g_return_val_if_fail (GTK_IS_VRULER (widget), FALSE);
- g_return_val_if_fail (event != NULL, FALSE);
-
- ruler = GTK_RULER (widget);
-
- if (event->is_hint)
- gdk_window_get_pointer (widget->window, NULL, &y, NULL);
- else
- y = event->y;
-
- ruler->position = ruler->lower + ((ruler->upper - ruler->lower) * y) / widget->allocation.height;
-
- /* Make sure the ruler has been allocated already */
- if (ruler->backing_store != NULL)
- gtk_ruler_draw_pos (ruler);
-
- return FALSE;
-}
-
-static void
-gtk_vruler_draw_ticks (GtkRuler *ruler)
-{
- GtkWidget *widget;
- GdkGC *gc, *bg_gc;
- GdkFont * font;
- gint i, j;
- gint width, height;
- gint xthickness;
- gint ythickness;
- gint length, ideal_length;
- gfloat subd_incr;
- gfloat step_incr;
- gfloat increment;
- gfloat start, end, cur;
- gchar unit_str[12];
- gchar digit_str[2] = { '\0', '\0' };
- gint text_height;
- gint digit_height;
- gint pos;
- gint scale;
-
- g_return_if_fail (ruler != NULL);
- g_return_if_fail (GTK_IS_VRULER (ruler));
-
- if (GTK_WIDGET_DRAWABLE (ruler))
- {
- widget = GTK_WIDGET (ruler);
-
- gc = widget->style->fg_gc[GTK_STATE_NORMAL];
- bg_gc = widget->style->bg_gc[GTK_STATE_NORMAL];
- font = widget->style->font;
- xthickness = widget->style->klass->xthickness;
- ythickness = widget->style->klass->ythickness;
- digit_height = font->ascent; /* Assume descent == 0 ? */
-
- width = widget->allocation.height;
- height = widget->allocation.width - ythickness * 2;
- gdk_draw_line (ruler->backing_store, gc,
- height + xthickness,
- ythickness,
- height + xthickness,
- widget->allocation.height - ythickness);
-
- if ((ruler->upper - ruler->lower) == 0)
- return;
-
- increment = (gfloat) width * ruler->metric->pixels_per_unit / (ruler->upper - ruler->lower);
-
- /* determine the scale
- * use the maximum extents of the ruler to determine the largest possible
- * number to be displayed. calculate the height in pixels of this displayed
- * text as for the vertical ruler case. use this height to find a scale
- * which leaves sufficient room for drawing the ruler.
- */
- scale = ceil (ruler->max_size / ruler->metric->pixels_per_unit);
- sprintf (unit_str, "%d", scale);
- text_height = strlen (unit_str) * digit_height + 1;
-
- for (scale = 0; scale < MAXIMUM_SCALES; scale++)
- if (ruler->metric->ruler_scale[scale] * increment > 2 * text_height)
- break;
-
- if (scale == MAXIMUM_SCALES)
- scale = MAXIMUM_SCALES - 1;
-
- length = 0;
- for (i = MAXIMUM_SUBDIVIDE - 1; i >= 0; i--)
- {
- subd_incr = (gfloat) ruler->metric->ruler_scale[scale] / (gfloat) ruler->metric->subdivide[i];
- step_incr = subd_incr * increment;
- if (step_incr <= MINIMUM_INCR)
- continue;
-
- start = floor ((ruler->lower / ruler->metric->pixels_per_unit) / subd_incr) * subd_incr;
- end = ceil ((ruler->upper / ruler->metric->pixels_per_unit) / subd_incr) * subd_incr;
-
- ideal_length = height / (i + 1) - 1;
- if (ideal_length > ++length)
- length = ideal_length;
-
- cur = start;
- while (cur <= end)
- {
- pos = ROUND ((cur - (ruler->lower / ruler->metric->pixels_per_unit)) * increment);
-
- gdk_draw_line (ruler->backing_store, gc,
- height + xthickness - length,
- pos,
- height + xthickness,
- pos);
-
- if (i == 0)
- {
- sprintf (unit_str, "%d", (int) cur);
- for (j = 0; j < (int) strlen (unit_str); j++)
- {
- digit_str[0] = unit_str[j];
- gdk_draw_rectangle (ruler->backing_store,
- bg_gc, TRUE,
- xthickness + 1,
- pos + digit_height * j + 1,
- gdk_string_width(font, digit_str),
- digit_height);
- gdk_draw_string (ruler->backing_store, font, gc,
- xthickness + 1,
- pos + digit_height * (j + 1) + 1,
- digit_str);
- }
- }
-
- cur += subd_incr;
- }
- }
- }
-}
-
-static void
-gtk_vruler_draw_pos (GtkRuler *ruler)
-{
- GtkWidget *widget;
- GdkGC *gc;
- int i;
- gint x, y;
- gint width, height;
- gint bs_width, bs_height;
- gint xthickness;
- gint ythickness;
- gfloat increment;
-
- g_return_if_fail (ruler != NULL);
- g_return_if_fail (GTK_IS_VRULER (ruler));
-
- if (GTK_WIDGET_DRAWABLE (ruler))
- {
- widget = GTK_WIDGET (ruler);
-
- gc = widget->style->fg_gc[GTK_STATE_NORMAL];
- xthickness = widget->style->klass->xthickness;
- ythickness = widget->style->klass->ythickness;
- width = widget->allocation.width - xthickness * 2;
- height = widget->allocation.height;
-
- bs_height = width / 2;
- bs_height |= 1; /* make sure it's odd */
- bs_width = bs_height / 2 + 1;
-
- if ((bs_width > 0) && (bs_height > 0))
- {
- /* If a backing store exists, restore the ruler */
- if (ruler->backing_store && ruler->non_gr_exp_gc)
- gdk_draw_pixmap (ruler->widget.window,
- ruler->non_gr_exp_gc,
- ruler->backing_store,
- ruler->xsrc, ruler->ysrc,
- ruler->xsrc, ruler->ysrc,
- bs_width, bs_height);
-
- increment = (gfloat) height / (ruler->upper - ruler->lower);
-
- x = (width + bs_width) / 2 + xthickness;
- y = ROUND ((ruler->position - ruler->lower) * increment) + (ythickness - bs_height) / 2 - 1;
-
- for (i = 0; i < bs_width; i++)
- gdk_draw_line (widget->window, gc,
- x + i, y + i,
- x + i, y + bs_height - 1 - i);
-
- ruler->xsrc = x;
- ruler->ysrc = y;
- }
- }
-}
+#define __GTK_VRULER_C__
+#include "gtkaliasdef.c"
projects / ~andy / gtk / blobdiff