* 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/.
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
-#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))
-
-
-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);
-
-
-GtkType
-gtk_vruler_get_type (void)
-{
- static GtkType vruler_type = 0;
+#include "config.h"
- if (!vruler_type)
- {
- static const GtkTypeInfo vruler_info =
- {
- "GtkVRuler",
- sizeof (GtkVRuler),
- sizeof (GtkVRulerClass),
- (GtkClassInitFunc) gtk_vruler_class_init,
- (GtkObjectInitFunc) gtk_vruler_init,
- /* reserved_1 */ NULL,
- /* reserved_2 */ NULL,
- (GtkClassInitFunc) NULL,
- };
+#include "gtkorientable.h"
+#include "gtkvruler.h"
+#include "gtkalias.h"
- vruler_type = gtk_type_unique (GTK_TYPE_RULER, &vruler_info);
- }
+/**
+ * SECTION:gtkvruler
+ * @Short_description: A vertical ruler
+ * @Title: GtkVRuler
+ *
+ * <note>
+ * This widget is considered too specialized/little-used for
+ * GTK+, and will in the future be moved to some other package. If
+ * your application needs this widget, feel free to use it, as the
+ * widget does work and is useful in some applications; it's just not
+ * of general interest. However, we are not accepting new features for
+ * the widget, and it will eventually move out of the GTK+
+ * distribution.
+ * </note>
+ *
+ * The VRuler widget is a widget arranged vertically creating a ruler that is
+ * utilized around other widgets such as a text widget. The ruler is used to show
+ * the location of the mouse on the window and to show the size of the window in
+ * specified units. The available units of measurement are GTK_PIXELS, GTK_INCHES
+ * and GTK_CENTIMETERS. GTK_PIXELS is the default unit of measurement.
+ */
- 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->xthickness * 2 + RULER_WIDTH;
- widget->requisition.height = widget->style->ythickness * 2 + 1;
+ gtk_orientable_set_orientation (GTK_ORIENTABLE (vruler),
+ GTK_ORIENTATION_VERTICAL);
}
-GtkWidget*
+/**
+ * gtk_vruler_new:
+ *
+ * Creates a new vertical ruler
+ *
+ * Returns: a new #GtkVRuler.
+ */
+GtkWidget *
gtk_vruler_new (void)
{
- return GTK_WIDGET (gtk_type_new (GTK_TYPE_VRULER));
-}
-
-
-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;
- g_object_notify (G_OBJECT (ruler), "position");
-
- /* 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;
- gint i, j;
- gint width, height;
- gint xthickness;
- gint ythickness;
- gint length, ideal_length;
- gdouble lower, upper; /* Upper and lower limits, in ruler units */
- gdouble increment; /* Number of pixels per unit */
- gint scale; /* Number of units per major unit */
- gdouble subd_incr;
- gdouble start, end, cur;
- gchar unit_str[32];
- gint digit_height;
- gint digit_offset;
- gint text_height;
- gint pos;
- PangoLayout *layout;
- PangoRectangle logical_rect, ink_rect;
-
- g_return_if_fail (ruler != NULL);
- g_return_if_fail (GTK_IS_VRULER (ruler));
-
- if (!GTK_WIDGET_DRAWABLE (ruler))
- return;
-
- widget = GTK_WIDGET (ruler);
-
- gc = widget->style->fg_gc[GTK_STATE_NORMAL];
- bg_gc = widget->style->bg_gc[GTK_STATE_NORMAL];
-
- xthickness = widget->style->xthickness;
- ythickness = widget->style->ythickness;
-
- layout = gtk_widget_create_pango_layout (widget, "012456789");
- pango_layout_get_extents (layout, &ink_rect, &logical_rect);
-
- digit_height = PANGO_PIXELS (ink_rect.height) + 2;
- digit_offset = ink_rect.y;
-
- width = widget->allocation.height;
- height = widget->allocation.width - ythickness * 2;
-
- gtk_paint_box (widget->style, ruler->backing_store,
- GTK_STATE_NORMAL, GTK_SHADOW_OUT,
- NULL, widget, "vruler",
- 0, 0,
- widget->allocation.width, widget->allocation.height);
-
- gdk_draw_line (ruler->backing_store, gc,
- height + xthickness,
- ythickness,
- height + xthickness,
- widget->allocation.height - ythickness);
-
- upper = ruler->upper / ruler->metric->pixels_per_unit;
- lower = ruler->lower / ruler->metric->pixels_per_unit;
-
- if ((upper - lower) == 0)
- return;
- increment = (gdouble) width / (upper - 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. 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] * fabs(increment) > 2 * text_height)
- break;
-
- if (scale == MAXIMUM_SCALES)
- scale = MAXIMUM_SCALES - 1;
-
- /* drawing starts here */
- length = 0;
- for (i = MAXIMUM_SUBDIVIDE - 1; i >= 0; i--)
- {
- subd_incr = (gdouble) ruler->metric->ruler_scale[scale] /
- (gdouble) ruler->metric->subdivide[i];
- if (subd_incr * fabs(increment) <= MINIMUM_INCR)
- continue;
-
- /* Calculate the length of the tickmarks. Make sure that
- * this length increases for each set of ticks
- */
- ideal_length = height / (i + 1) - 1;
- if (ideal_length > ++length)
- length = ideal_length;
-
- if (lower < upper)
- {
- start = floor (lower / subd_incr) * subd_incr;
- end = ceil (upper / subd_incr) * subd_incr;
- }
- else
- {
- start = floor (upper / subd_incr) * subd_incr;
- end = ceil (lower / subd_incr) * subd_incr;
- }
-
- for (cur = start; cur <= end; cur += subd_incr)
- {
- pos = ROUND ((cur - lower) * increment);
-
- gdk_draw_line (ruler->backing_store, gc,
- height + xthickness - length, pos,
- height + xthickness, pos);
-
- /* draw label */
- if (i == 0)
- {
- sprintf (unit_str, "%d", (int) cur);
-
- for (j = 0; j < (int) strlen (unit_str); j++)
- {
- pango_layout_set_text (layout, unit_str + j, 1);
- pango_layout_get_extents (layout, NULL, &logical_rect);
-
-
- gtk_paint_layout (widget->style,
- ruler->backing_store,
- GTK_WIDGET_STATE (widget),
- FALSE,
- NULL,
- widget,
- "vruler",
- xthickness + 1,
- pos + digit_height * j + 2 + PANGO_PIXELS (logical_rect.y - digit_offset),
- layout);
- }
- }
- }
- }
-
- g_object_unref (G_OBJECT (layout));
+ return g_object_new (GTK_TYPE_VRULER, NULL);
}
-
-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;
- gdouble 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->xthickness;
- ythickness = widget->style->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 = (gdouble) 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