Initial import of gtk2_ardour.

git-svn-id: svn://localhost/trunk/ardour2@24 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 239 insertions, 0 deletions

diff --git a/gtk2_ardour/gtk-custom-hruler.c b/gtk2_ardour/gtk-custom-hruler.c
new file mode 100644
index 0000000000..d028d6472e
--- /dev/null
+++ b/gtk2_ardour/gtk-custom-hruler.c
@@ -0,0 +1,239 @@
+/* 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.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-1999.  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/. 
+ */
+
+/* modified by andreas meyer <hexx3000@gmx.de> */
+/* subsequently specialized for audio time displays by paul davis <paul@linuxaudiosystems.com> */
+
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+#include "gtk-custom-hruler.h"
+
+#define RULER_HEIGHT          14
+#define MINIMUM_INCR          5
+#define MAXIMUM_SUBDIVIDE     5
+
+#define ROUND(x) ((int) ((x) + 0.5))
+
+static void gtk_custom_hruler_class_init (GtkCustomHRulerClass * klass);
+static void gtk_custom_hruler_init (GtkCustomHRuler * custom_hruler);
+static gint gtk_custom_hruler_motion_notify (GtkWidget * widget, GdkEventMotion * event);
+static void gtk_custom_hruler_draw_ticks (GtkCustomRuler * ruler);
+static void gtk_custom_hruler_draw_pos (GtkCustomRuler * ruler);
+
+guint gtk_custom_hruler_get_type (void)
+{
+	static guint custom_hruler_type = 0;
+
+	if (!custom_hruler_type) {
+		static const GtkTypeInfo custom_hruler_info = {
+			"GtkCustomHRuler",
+			sizeof (GtkCustomHRuler),
+			sizeof (GtkCustomHRulerClass),
+			(GtkClassInitFunc) gtk_custom_hruler_class_init,
+			(GtkObjectInitFunc) gtk_custom_hruler_init,
+			/* reserved_1 */ NULL,
+			/* reserved_2 */ NULL,
+			(GtkClassInitFunc) NULL,
+		};
+		custom_hruler_type = gtk_type_unique (gtk_custom_ruler_get_type (), &custom_hruler_info);
+	}
+	return custom_hruler_type;
+}
+
+static void
+gtk_custom_hruler_class_init (GtkCustomHRulerClass * klass)
+{
+	GtkWidgetClass *widget_class;
+	GtkCustomRulerClass *ruler_class;
+
+	widget_class = (GtkWidgetClass *) klass;
+	ruler_class = (GtkCustomRulerClass *) klass;
+
+	widget_class->motion_notify_event = gtk_custom_hruler_motion_notify;
+
+	ruler_class->draw_ticks = gtk_custom_hruler_draw_ticks;
+	ruler_class->draw_pos = gtk_custom_hruler_draw_pos;
+}
+
+static void
+gtk_custom_hruler_init (GtkCustomHRuler * custom_hruler)
+{
+	GtkWidget *widget;
+
+	widget = GTK_WIDGET (custom_hruler);
+	widget->requisition.width = widget->style->klass->xthickness * 2 + 1;
+	widget->requisition.height = widget->style->klass->ythickness * 2 + RULER_HEIGHT;
+}
+
+
+GtkWidget *
+gtk_custom_hruler_new (void)
+{
+	return GTK_WIDGET (gtk_type_new (gtk_custom_hruler_get_type ()));
+}
+
+static gint
+gtk_custom_hruler_motion_notify (GtkWidget * widget, GdkEventMotion * event)
+{
+	GtkCustomRuler *ruler;
+	gint x;
+
+	g_return_val_if_fail (widget != NULL, FALSE);
+	g_return_val_if_fail (GTK_IS_CUSTOM_HRULER (widget), FALSE);
+	g_return_val_if_fail (event != NULL, FALSE);
+
+	ruler = GTK_CUSTOM_RULER (widget);
+
+	if (event->is_hint)
+		gdk_window_get_pointer (widget->window, &x, NULL, NULL);
+	else
+		x = event->x;
+
+	ruler->position = ruler->lower + ((ruler->upper - ruler->lower) * x) / widget->allocation.width;
+
+	/*  Make sure the ruler has been allocated already  */
+	if (ruler->backing_store != NULL)
+		gtk_custom_ruler_draw_pos (ruler);
+
+	return FALSE;
+}
+
+static void
+gtk_custom_hruler_draw_ticks (GtkCustomRuler * ruler)
+{
+	GtkWidget *widget;
+	GdkGC *gc, *bg_gc;
+	GdkFont *font;
+	gint i;
+	GtkCustomRulerMark *marks;
+	gint nmarks;
+	gint max_chars;
+
+	g_return_if_fail (ruler != NULL);
+	g_return_if_fail (GTK_IS_CUSTOM_HRULER (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];
+	font = widget->style->font;
+
+	gtk_paint_box (widget->style, ruler->backing_store,
+		       GTK_STATE_NORMAL, GTK_SHADOW_NONE,
+		       NULL, widget, "custom_hruler", 0, 0, widget->allocation.width, widget->allocation.height);
+
+	gdk_draw_line (ruler->backing_store, gc, 0, widget->allocation.height - 1, 
+		       widget->allocation.width, widget->allocation.height - 1);
+
+	if ((ruler->upper - ruler->lower) == 0) {
+		return;
+	}
+	
+	/* we have to assume a fixed width font here */
+
+	max_chars = widget->allocation.width / gdk_string_width (font, "8");
+
+	nmarks = ruler->metric->get_marks (&marks, ruler->lower, ruler->upper, max_chars);
+
+	for (i = 0; i < nmarks; i++) {
+		gint pos;
+		gint height;
+
+		pos = ROUND ((marks[i].position - ruler->lower) / ruler->metric->units_per_pixel);
+		height = widget->allocation.height;
+
+		switch (marks[i].style) {
+		case GtkCustomRulerMarkMajor:
+			gdk_draw_line (ruler->backing_store, gc, pos, height, pos, 0);
+			break;
+		case GtkCustomRulerMarkMinor:
+			gdk_draw_line (ruler->backing_store, gc, pos, height, pos, height - (height/2));
+			break;
+		case GtkCustomRulerMarkMicro:
+			gdk_draw_line (ruler->backing_store, gc, pos, height, pos, height - 3);
+			break;
+		}
+
+		gdk_draw_string (ruler->backing_store, font, gc, pos + 2, font->ascent - 1, marks[i].label);
+		g_free (marks[i].label);
+	}
+	
+	if (nmarks) {
+		g_free (marks);
+	}
+}
+
+static void
+gtk_custom_hruler_draw_pos (GtkCustomRuler * 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_CUSTOM_HRULER (ruler));
+	if (GTK_WIDGET_DRAWABLE (ruler) && (ruler->upper - ruler->lower) > 0) {
+		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;
+		height = widget->allocation.height - ythickness * 2;
+
+		bs_width = height / 2;
+		bs_width |= 1;			/* make sure it's odd */
+		bs_height = bs_width / 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) width / (ruler->upper - ruler->lower);
+			x = ROUND ((ruler->position - ruler->lower) * increment) + (xthickness - bs_width) / 2 - 1;
+			y = (height + bs_height) / 2 + ythickness;
+
+			for (i = 0; i < bs_height; i++)
+				gdk_draw_line (widget->window, gc, x + i, y + i, x + bs_width - 1 - i, y + i);
+
+
+			ruler->xsrc = x;
+			ruler->ysrc = y;
+		}
+	}
+}