/* Copyright 1997 Acorn Computers Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/***************************************************/
/* File : SaveDraw.h */
/* */
/* Purpose: Save a web page as a Draw file. */
/* */
/* Author : Merlyn Kline for Customer browser; */
/* This source adapted by A.D.Hodgkinson */
/* including bits from RISC_OSLib. */
/* */
/* History: 13-Nov-97: Created. */
/***************************************************/
/* General bits and pieces */
typedef enum
{
draw_OBJFONTLIST = 0,
draw_OBJTEXT = 1,
draw_OBJPATH = 2,
draw_OBJSPRITE = 5,
draw_OBJGROUP = 6,
draw_OBJTEXTAREA = 9,
draw_OBJTEXTCOL = 10,
draw_OBJTEXTTRFM = 12
}
draw_tagtyp;
typedef int draw_sizetyp;
typedef BBox draw_bboxtyp;
typedef int draw_coltyp;
/* For paths */
typedef int draw_pathwidth;
typedef struct
{
unsigned char joincapwind; /* 1 byte */ /* bit 0..1 join */
/* bit 2..3 end cap */
/* bit 4..5 start cap */
/* bit 6 winding rule */
/* bit 7 dashed */
unsigned char reserved8; /* 1 byte */
unsigned char tricapwid; /* 1 byte */ /* 1/16th of line width */
unsigned char tricaphei; /* 1 byte */ /* 1/16th of line width */
}
draw_pathstyle;
typedef enum
{
draw_PathTERM = 0, /* end of path */
draw_PathMOVE = 2, /* move to (x,y), starts new subpath */
draw_PathLINE = 8, /* line to (x,y) */
draw_PathCURVE = 6, /* bezier curve to (x3,y3) with 2 control points */
draw_PathCLOSE = 5 /* close current subpath with a line */
}
draw_path_tagtype;
/* For text */
typedef char draw_fontref;
typedef struct
{
draw_fontref fontref; /* 1 byte */
char reserved8; /* 1 byte */
short reserved16; /* 2 bytes */
}
draw_textstyle;
typedef unsigned int draw_fontsize;
typedef struct
{
int typeface; /* Index into fontname table */
int typesizex;
int typesizey;
draw_coltyp textcolour; /* Text colour RGB */
draw_coltyp background; /* Hint for anti-aliased printing RGB */
}
fontrec;
/* Path structure header item */
typedef struct
{
draw_tagtyp tag; /* 1 word */
draw_sizetyp size; /* 1 word */
draw_bboxtyp bbox; /* 4 words */
draw_coltyp fillcolour; /* 1 word */
draw_coltyp pathcolour; /* 1 word */
draw_pathwidth pathwidth; /* 1 word */
draw_pathstyle pathstyle; /* 1 word */
}
draw_pathstrhdr;
/* Sprite header */
typedef struct
{
draw_tagtyp tag; /* 1 word */
draw_sizetyp size; /* 1 word */
draw_bboxtyp bbox; /* 4 words */
}
draw_spristrhdr;
/* A line of text (maybe transformed) */
typedef struct
{
int x;
int y;
}
draw_objcoord;
typedef struct
{
draw_tagtyp tag; /* 1 word */
draw_sizetyp size; /* 1 word */
draw_bboxtyp bbox; /* 4 words */
draw_coltyp textcolour; /* 1 word */
draw_coltyp background; /* 1 word */
draw_textstyle textstyle; /* 1 word */
draw_fontsize fsizex; /* 1 word, unsigned */
draw_fontsize fsizey; /* 1 word, unsigned */
draw_objcoord coord; /* 2 words */
}
draw_textstrhdr;
#define SaveDraw_FontFlags_Kerned (1u<<0)
#define SaveDraw_FontFlags_RightToLeft (1u<<1)
typedef struct
{
draw_tagtyp tag; /* 1 word */
draw_sizetyp size; /* 1 word */
draw_bboxtyp bbox; /* 4 words */
int matrix[6];
unsigned int fontflags;
draw_coltyp textcolour; /* 1 word */
draw_coltyp background; /* 1 word */
draw_textstyle textstyle; /* 1 word */
draw_fontsize fsizex; /* 1 word, unsigned */
draw_fontsize fsizey; /* 1 word, unsigned */
draw_objcoord coord; /* 2 words */
}
draw_trfmtextstrhdr;
/* File header */
typedef struct
{
char title[4];
int majorstamp;
int minorstamp;
char progident[12];
draw_bboxtyp bbox;
}
draw_fileheader;
/* General header for graphic objects */
typedef struct
{
draw_tagtyp tag; /* 1 word */
draw_sizetyp size; /* 1 word */
draw_bboxtyp bbox; /* 4 words */
}
draw_objhdr;
/* A font list */
typedef struct
{
draw_tagtyp tag; /* 1 word */
draw_sizetyp size; /* 1 word */
}
draw_fontliststrhdr;
typedef struct
{
draw_tagtyp tag;
draw_sizetyp size;
draw_fontref fontref;
char fontname[1]; /* String, null terminated */
}
draw_fontliststr;
/* For sprites */
typedef struct /* Format of a sprite header */
{
int next; /* Offset to next sprite */
char name[12]; /* Sprite name */
int width; /* Width in words-1 (0..639) */
int height; /* Height in scanlines-1 (0..255/511) */
int lbit; /* First bit used (left end of row) */
int rbit; /* Last bit used (right end of row) */
int image; /* Offset to sprite image */
int mask; /* Offset to transparency mask */
int mode; /* Mode sprite was defined in */
/* Palette data optionally follows this */
/* in memory */
}
sprite_header;
typedef struct
{
int width;
int height;
int mask;
int mode;
}
sprite_info;
/* We're going to fix scale factors for OS units and points */
/* to Draw units. */
#define PTD(x) (((x)*16)/25) /* Convert millipoints to draw units */
#define OTD(x) ((x)*256) /* Convert OS units to draw units */
/* Some miscellaneous useful definitions */
#define DSIZE_FRECT (sizeof(draw_pathstrhdr)+5*12+4)
#define DSIZE_FTRIA (sizeof(draw_pathstrhdr)+4*12+4)
/* Function prototypes */
int savedraw_write_bytes (const char * s, unsigned int n);
int savedraw_rectangle_fill (int x, int y, int w, int h, int c);
_kernel_oserror * savedraw_save_draw (browser_data * b, const char * pathname, int bgimages);
int savedraw_draw_size (browser_data * b, int bgimages);