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amiga_windowsys.h
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1994-06-26
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/* amiga_windowsys.h -- Amiga window-system data and macros
Copyright (C) 1993, 1994 John Harper <jsh@ukc.ac.uk>
This file is part of Jade.
Jade 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, or (at your option)
any later version.
Jade 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 Jade; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef _AMIGA_WINDOWSYS_H
#define _AMIGA_WINDOWSYS_H
typedef struct {
struct Window *ws_Window;
struct RastPort *ws_Rp;
short ws_PenX, ws_PenY;
struct TextFont *ws_Font;
UWORD ws_OldDimensions[4]; /* l,t,w,h */
short ws_FontSize;
short ws_Pad; /* keep on long word alignment. */
VALUE ws_ScreenName;
} VW_WindowSys;
#define vw_Window vw_WindowSys.ws_Window
#define vw_Font vw_WindowSys.ws_Font
#define WINDOW_NIL NULL
typedef struct {
struct Gadget *gad;
long top;
long total;
} ScrollBar;
/* Pen colours. */
#define P_TEXT 0
#define P_BLOCK 1
/*
* Macros for drawing operations. These are mainly used in render.c for
* system-independant rendering.
*/
/* Move to position (X,Y). The next DRAW() will happen at this position. */
#define MOVE(vw,x,y) \
do { \
(vw)->vw_WindowSys.ws_PenX = x; \
(vw)->vw_WindowSys.ws_PenY = y; \
} while(0)
#define PEN_X(vw) ((vw)->vw_WindowSys.ws_PenX)
#define PEN_Y(vw) ((vw)->vw_WindowSys.ws_PenY)
/* Draw LEN bytes of the string STR with colour COL (P_TEXT or P_BLOCK)
at the position set by the MOVE() macro. */
#define TEXT(vw,col,str,len) \
do { \
Move((vw)->vw_WindowSys.ws_Rp, \
(vw)->vw_WindowSys.ws_PenX, \
(vw)->vw_WindowSys.ws_PenY); \
SetAPen((vw)->vw_WindowSys.ws_Rp, 1); \
SetDrMd((vw)->vw_WindowSys.ws_Rp, JAM2 | (((col) == P_TEXT) ? 0 : INVERSVID)); \
Text((vw)->vw_WindowSys.ws_Rp, (str), (len)); \
(vw)->vw_WindowSys.ws_PenX += (len) * (vw)->vw_FontX; \
} while(0)
/* Clear a rectangle from (X,Y) to (X+W,Y+H). */
#define CLR_AREA(vw,x,y,w,h) \
do { \
SetAPen((vw)->vw_WindowSys.ws_Rp, 0); \
SetDrMd((vw)->vw_WindowSys.ws_Rp, JAM2); \
RectFill((vw)->vw_WindowSys.ws_Rp, \
(x), (y), ((x) + (w)) - 1, ((y) + (h)) - 1); \
} while(0)
#define CLR_RECT(vw,x1,y1,x2,y2) \
do { \
SetAPen((vw)->vw_WindowSys.ws_Rp, 0); \
SetDrMd((vw)->vw_WindowSys.ws_Rp, JAM2); \
RectFill((vw)->vw_WindowSys.ws_Rp, (x1), (y1), (x2) - 1, (y2) - 1); \
} while(0)
/* Fill a rectangle from (X,Y) to (X+W,Y+H). */
#define SET_AREA(vw,x,y,w,h) \
do { \
SetAPen((vw)->vw_WindowSys.ws_Rp, 1); \
SetDrMd((vw)->vw_WindowSys.ws_Rp, JAM2); \
RectFill((vw)->vw_WindowSys.ws_Rp, \
(x), (y), ((x) + (w)) - 1, ((y) + (h)) - 1); \
} while(0)
#define SET_RECT(vw,x1,y1,x2,y2) \
do { \
SetAPen((vw)->vw_WindowSys.ws_Rp, 1); \
SetDrMd((vw)->vw_WindowSys.ws_Rp, JAM2); \
RectFill((vw)->vw_WindowSys.ws_Rp, (x1), (y1), (x2) - 1, (y2) - 1); \
} while(0)
/* Copy pixels from (X1,Y1),(X1+W,Y1+H) to (X2,Y2) */
#define COPY_AREA(vw,x1,y1,w,h,x2,y2) \
ClipBlit((vw)->vw_WindowSys.ws_Rp, (x1), (y1), \
(vw)->vw_WindowSys.ws_Rp, (x2), (y2), \
(w), (h), 0xc0)
/* Number of pixels from top of font to its baseline. */
#define FONT_ASCENT(vw) ((vw)->vw_Font->tf_Baseline)
/* Draw a line from (x1,y1) to (x2,y2) */
#define DRAW_LINE(vw,x1,y1,x2,y2) \
do { \
SetAPen((vw)->vw_WindowSys.ws_Rp, 1); \
SetDrMd((vw)->vw_WindowSys.ws_Rp, JAM2); \
Move((vw)->vw_WindowSys.ws_Rp, x1, y1); \
Draw((vw)->vw_WindowSys.ws_Rp, x2, y2); \
} while(0)
#endif /* _AMIGA_WINDOWSYS_H */