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/***********************************************************************/
/* */
/* OCaml */
/* */
/* Jacob Navia, after Xavier Leroy */
/* */
/* Copyright 2001 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
#include <stdio.h>
#include <windows.h>
struct canvas {
int w, h; /* Dimensions of the drawable */
HWND win; /* The drawable itself */
HDC gc; /* The associated graphics context */
};
extern HWND grdisplay; /* The display connection */
//extern int grscreen; /* The screen number */
//extern Colormap grcolormap; /* The color map */
//extern struct canvas grwindow; /* The graphics window */
//extern struct canvas grbstore; /* The pixmap used for backing store */
//extern int grwhite, grblack; /* Black and white pixels for X */
//extern int grbackground; /* Background color for X
// (used for CAML color -1) */
extern COLORREF grbackground;
extern BOOL grdisplay_mode; /* Display-mode flag */
extern BOOL grremember_mode; /* Remember-mode flag */
extern int grx, gry; /* Coordinates of the current point */
extern int grcolor; /* Current *CAML* drawing color (can be -1) */
extern HFONT * grfont; /* Current font */
extern BOOL direct_rgb;
extern int byte_order;
extern int bitmap_unit;
extern int bits_per_pixel;
#define Wcvt(y) (grwindow.height - 1 - (y))
#define Bcvt(y) (grwindow.height - 1 - (y))
#define WtoB(y) ((y) + WindowRect.bottom - grwindow.h)
//#define BtoW(y) ((y) + WindowRect.bottom - grbstore.h)
#define DEFAULT_SCREEN_WIDTH 1024
#define DEFAULT_SCREEN_HEIGHT 768
#define BORDER_WIDTH 2
#define WINDOW_NAME "Caml graphics"
#define ICON_NAME "Caml graphics"
#define DEFAULT_EVENT_MASK \
(ExposureMask | KeyPressMask | StructureNotifyMask)
#define DEFAULT_FONT "fixed"
#define SIZE_QUEUE 256
/* To handle events asynchronously */
#ifdef HAS_ASYNC_IO
#define USE_ASYNC_IO
#define EVENT_SIGNAL SIGIO
#else
#ifdef HAS_SETITIMER
#define USE_INTERVAL_TIMER
#define EVENT_SIGNAL SIGALRM
#else
#define USE_ALARM
#define EVENT_SIGNAL SIGALRM
#endif
#endif
void gr_fail(char *fmt, char *arg);
void gr_check_open(void);
unsigned long gr_pixel_rgb(int rgb);
int gr_rgb_pixel(long unsigned int pixel);
void gr_enqueue_char(unsigned char c);
void gr_init_color_cache(void);
// Windows specific definitions
extern RECT WindowRect;
extern int grCurrentColor;
typedef struct tagWindow {
HDC gc;
HDC gcBitmap;
HWND hwnd;
HBRUSH CurrentBrush;
HPEN CurrentPen;
DWORD CurrentColor;
int width;
int height;
int grx;
int gry;
HBITMAP hBitmap;
HFONT CurrentFont;
int CurrentFontSize;
HDC tempDC; // For image operations;
} GR_WINDOW;
extern GR_WINDOW grwindow;
HFONT CreationFont(char *name);
extern int MouseLbuttonDown,MouseMbuttonDown,MouseRbuttonDown;
extern HANDLE EventHandle;
extern int InspectMessages;
extern MSG msg;
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