home *** CD-ROM | disk | FTP | other *** search
- /* 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)
-
- #endif /* _AMIGA_WINDOWSYS_H */
-