Initial import of Sylpheed (GTK2 version).

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@1 ee746299-78ed-0310-b773-934348b2243d

1 files changed, 218 insertions, 0 deletions

diff --git a/src/gtkshruler.c b/src/gtkshruler.c
new file mode 100644
index 00000000..1e350a58
--- /dev/null
+++ b/src/gtkshruler.c
@@ -0,0 +1,218 @@
+/* GtkSHRuler
+ *
+ *  Copyright (C) 2000-2004 Alfons Hoogervorst & The Sylpheed Claws Team
+ *
+ * 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.
+ */
+ 
+/* I derived this class from hruler. S in HRuler could be read as
+ * Sylpheed (sylpheed.good-day.net), but also [S]ettable HRuler.
+ * I basically ripped apart the draw_ticks member of HRuler; it
+ * now draws the ticks at ruler->max_size. so gtk_ruler_set_range's
+ * last parameter has the distance between two ticks (which is
+ * the width of the fixed font character!
+ * 
+ * -- Alfons
+ */
+
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+#include <gtk/gtkhruler.h>
+#include "gtkshruler.h"
+
+#define RULER_HEIGHT          14
+#define MINIMUM_INCR          5
+#define MAXIMUM_SUBDIVIDE     5
+#define MAXIMUM_SCALES        10
+
+#define ROUND(x) ((int) ((x) + 0.5))
+
+static void gtk_shruler_class_init   	(GtkSHRulerClass *klass);
+static void gtk_shruler_init         	(GtkSHRuler      *hruler);
+#if 0
+static gint gtk_shruler_motion_notify	(GtkWidget       *widget,
+					 GdkEventMotion  *event);
+#endif
+static void gtk_shruler_draw_ticks 	(GtkRuler        *ruler);
+#if 0
+static void gtk_shruler_draw_pos      	(GtkRuler        *ruler);
+#endif
+
+GType
+gtk_shruler_get_type(void)
+{
+	static GType shruler_type = 0;
+
+  	if ( !shruler_type ) {
+   		static const GTypeInfo shruler_info = {
+			sizeof (GtkSHRulerClass),
+
+			(GBaseInitFunc) NULL,
+			(GBaseFinalizeFunc) NULL,
+
+			(GClassInitFunc) gtk_shruler_class_init,
+			(GClassFinalizeFunc) NULL,
+			NULL,	/* class_data */
+
+			sizeof (GtkSHRuler),
+			0,	/* n_preallocs */
+			(GInstanceInitFunc) gtk_shruler_init,
+		};
+		/* inherit from GtkHRuler */
+		shruler_type = g_type_register_static ( GTK_TYPE_HRULER, "GtkSHRuler", &shruler_info, (GTypeFlags) 0 );
+	}
+	return shruler_type;
+}
+
+static void
+gtk_shruler_class_init(GtkSHRulerClass * klass)
+{
+ 	GtkWidgetClass * widget_class;
+  	GtkRulerClass * hruler_class;
+
+  	widget_class = (GtkWidgetClass*) klass;
+  	hruler_class = (GtkRulerClass*) klass;
+
+	/* just neglect motion notify events */
+  	widget_class->motion_notify_event = NULL /* gtk_shruler_motion_notify */;
+
+  	/* we want the old ruler draw ticks... */
+  	/* ruler_class->draw_ticks = gtk_hruler_draw_ticks; */
+	hruler_class->draw_ticks = gtk_shruler_draw_ticks;
+	
+	/* unimplemented draw pos */
+	hruler_class->draw_pos = NULL;
+/*
+  	hruler_class->draw_pos = gtk_shruler_draw_pos;
+*/
+}
+
+static void
+gtk_shruler_init (GtkSHRuler * shruler)
+{
+	GtkWidget * widget;
+	
+	widget = GTK_WIDGET (shruler);
+	widget->requisition.width = widget->style->xthickness * 2 + 1;
+	widget->requisition.height = widget->style->ythickness * 2 + RULER_HEIGHT;
+}
+
+
+GtkWidget*
+gtk_shruler_new(void)
+{
+	return GTK_WIDGET( g_object_new( gtk_shruler_get_type(), NULL ) );
+}
+
+#if 0
+static gint
+gtk_shruler_motion_notify(GtkWidget      *widget,
+			  GdkEventMotion *event)
+{
+	/* I could have perhaps set this to NULL */
+	return FALSE;
+}
+#endif
+
+static void
+gtk_shruler_draw_ticks(GtkRuler *ruler)
+{
+	GtkWidget *widget;
+	GdkGC *gc, *bg_gc;
+	GdkFont *font;
+	gint i;
+	gint width, height;
+	gint xthickness;
+	gint ythickness;
+	gint pos;
+
+	g_return_if_fail (ruler != NULL);
+	g_return_if_fail (GTK_IS_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 = gtk_style_get_font(widget->style);
+
+	xthickness = widget->style->xthickness;
+	ythickness = widget->style->ythickness;
+
+	width = widget->allocation.width;
+	height = widget->allocation.height - ythickness * 2;
+  
+	gtk_paint_box (widget->style, ruler->backing_store,
+		       GTK_STATE_NORMAL, GTK_SHADOW_OUT, 
+		       NULL, widget, "hruler",
+		       0, 0, 
+		       widget->allocation.width, widget->allocation.height);
+
+#if 0
+	gdk_draw_line (ruler->backing_store, gc,
+		       xthickness,
+		       height + ythickness,
+		       widget->allocation.width - xthickness,
+		       height + ythickness);
+#endif
+
+	/* assume ruler->max_size has the char width */    
+	/* i is increment of char_width,  pos is label number */
+	for ( i = 0, pos = 0; i < widget->allocation.width - xthickness; i += ruler->max_size, pos++ ) {	
+		int length = ythickness / 2;
+	
+		if ( pos % 10 == 0 ) length = ( 4 * ythickness );
+		else if (pos % 5 == 0 ) length = ( 2 * ythickness );
+		
+		gdk_draw_line(ruler->backing_store, gc,
+			      i, height + ythickness, 
+			      i, height - length);			
+		
+		if ( pos % 10 == 0 ) {
+			char buf[8];
+			/* draw label */
+			sprintf(buf, "%d", (int) pos);
+			gdk_draw_string(ruler->backing_store, font, gc,
+					i + 2, ythickness + font->ascent - 1,
+					buf);
+	    }
+	}
+}
+
+/* gtk_ruler_set_pos() - does not work yet, need to reimplement 
+ * gtk_ruler_draw_pos(). */
+void
+gtk_shruler_set_pos(GtkSHRuler * ruler, gfloat pos)
+{
+	GtkRuler * ruler_;
+	g_return_if_fail( ruler != NULL );
+	
+	ruler_ = GTK_RULER(ruler);
+	
+	if ( pos < ruler_->lower ) 
+		pos = ruler_->lower;
+	if ( pos > ruler_->upper )
+		pos = ruler_->upper;
+	
+	ruler_->position = pos;	
+	
+	/*  Make sure the ruler has been allocated already  */
+	if ( ruler_->backing_store != NULL )
+		gtk_ruler_draw_pos(ruler_);
+}