1 files changed, 149 insertions, 0 deletions
diff --git a/src/gui.c b/src/gui.c
new file mode 100644
index 0000000..bda46d3
--- /dev/null
+++ b/src/gui.c
@@ -0,0 +1,149 @@
+/*
+
+    ezx81 - X11 ZX81 emulator
+
+    Copyright (C) 2003  Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    -------------------------------------------------------------------------
+
+    Basic GUI routines
+
+*/
+static const char ident[]="$Id$";
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "gui.h"
+#include "gfx.h"
+#include "exit.h"
+
+static const char ident_h[]=EZX81_GUI_H;
+
+
+/* ---------------------------------------- MACROS
+*/
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+/* Must match gfx.c
+*/
+#define SCR_W	320
+#define SCR_H	200
+
+/* ---------------------------------------- STATICS
+*/
+
+
+/* ---------------------------------------- PRIVATE FUNCTIONS
+*/
+static void *Malloc(size_t size)
+{
+    void *p=malloc(size);
+
+    if (!p)
+    	Exit("malloc failed for %lu bytes\n",(unsigned long)size);
+
+    return p;
+}
+
+
+static void Centre(const char *p, int y, int r, int g, int b)
+{
+    GFXPrint((SCR_W-strlen(p)*8)/2,y,GFXRGB(r,g,b),"%s",p);
+}
+
+
+/* ---------------------------------------- EXPORTED INTERFACES
+*/
+void GUIMessage(const char *title, const char *format,...)
+{
+    char buff[257];
+    va_list va;
+    char *p;
+    int no;
+    int f;
+    char **line;
+    int width;
+    int height;
+    int x,y;
+
+    va_start(va,format);
+    vsprintf(buff,format,va);
+    va_end(va);
+
+    p=buff;
+    no=1;
+
+    while(*p)
+    {
+    	if (*p=='\n')
+	    no++;
+
+	p++;
+    }
+
+    line=Malloc(sizeof *line * no);
+
+    line[0]=strtok(buff,"\n");
+    width=strlen(line[0]);
+
+    for(f=1;f<no;f++)
+    {
+    	line[f]=strtok(NULL,"\n");
+
+	if (strlen(line[f])>width)
+	    width=strlen(line[f]);
+    }
+
+    width=(width*8)+16;
+    height=(no+3)*10;
+    y=(SCR_H-height)/2;
+    x=(SCR_W-width)/2;
+
+    GFXRect(x-1,y-1,
+	    width+2,height+2,
+	    GFXRGB(255,255,255),FALSE);
+
+    GFXRect(x,y,
+	    width,height,
+	    GFXRGB(0,0,0),TRUE);
+
+    Centre(title,y+2,255,255,255);
+    GFXHLine(x+2,x+width-4,y+10,GFXRGB(255,255,255));
+
+    for(f=0;f<no;f++)
+    	Centre(line[f],y+5+10*(f+1),200,200,200);
+
+    Centre("Press a key",y+height-10,255,0,0);
+
+    GFXEndFrame(FALSE);
+
+    GFXWaitKey();
+
+    free(line);
+}
+
+
+/* END OF FILE */