1 files changed, 120 insertions, 0 deletions
diff --git a/src/gfx.h b/src/gfx.h
new file mode 100644
index 0000000..b9b353a
--- /dev/null
+++ b/src/gfx.h
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+/*
+
+    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
+
+    -------------------------------------------------------------------------
+
+    Wrapper to SDL
+
+*/
+
+#ifndef EZX81_GFX_H
+#define EZX81_GFX_H "$Id$"
+
+#include "SDL.h"
+
+
+/* ---------------------------------------- CONSTANTS
+*/
+#define FONT_UP_ARROW		'\001'
+#define FONT_DOWN_ARROW		'\002'
+#define FONT_LEFT_ARROW		'\003'
+#define FONT_RIGHT_ARROW	'\004'
+#define FONT_TICK		'\005'
+#define FONT_CROSS		'\006'
+#define FONT_CURSOR		'\007'
+#define FONT_COPYRIGHT		'\010'
+
+
+/* ---------------------------------------- INTERFACES
+*/
+
+/* Initialise
+*/
+void		GFXInit(void);
+
+
+/* Get the SDL_Surface for the screen
+*/
+SDL_Surface	*GFXGetSurface(void);
+
+
+/* Get the pixel value for a colour
+*/
+Uint32		GFXRGB(Uint8 r, Uint8 g, Uint8 b);
+
+
+/* Clear the screen
+*/
+void		GFXClear(Uint32 col);
+
+
+/* Indicate a frame is starting
+*/
+void		GFXStartFrame(void);
+
+
+/* Indicate a frame is done and refreshes the screen
+   If delay is TRUE, sleeps to implement the frames_per_sec config.
+*/
+void		GFXEndFrame(int delay);
+
+
+/*
+    Note that no bound checking (except for GFXPrint()) is done - it is the
+    callers responsibility to plot onscreen.
+*/
+
+/* Plot a point
+*/
+void		GFXPlot(int x, int y, Uint32 col);
+
+
+/* Draw a rectangle
+*/
+void		GFXRect(int x, int y, int w, int h, Uint32 col, int solid);
+
+
+/* Draw an horizontal line
+*/
+void		GFXHLine(int x1, int x2, int y, Uint32 col);
+
+
+/* Draw a vertical line
+*/
+void		GFXVLine(int x, int y1, int y2, Uint32 col);
+
+
+/* Draws text using an internal 8x8 monspaced font.  The only supported
+   characters are 32-126 and the special FONT_xxx characters defined
+   above.  The routine assumes the environment operates with ASCII.
+
+   The co-ord given is the top left of the first character, and characters
+   are drawn transparently.
+
+   Causes undefined behaviour if the generated string from the printf
+   format is longer than 256 characters.
+*/
+void		GFXPrint(int x, int y, Uint32 col, const char *format, ...);
+
+
+#endif
+
+
+/* END OF FILE */