Version 1.1.0HEAD1.1.0trunk

1 files changed, 620 insertions, 0 deletions

diff --git a/src/svgc.h b/src/svgc.h
new file mode 100644
index 0000000..aea6616
--- /dev/null
+++ b/src/svgc.h
@@ -0,0 +1,620 @@
+
+/***************************************************************
+  SVGC.H
+
+       This file containt declarations of SVG C lib functions.
+ ***************************************************************/
+
+#ifndef __SVGC_H__
+#define __SVGC_H__
+
+#if defined( __cplusplus )
+extern "C"
+{
+#endif
+
+#include <svgc-dlist.h>
+
+typedef struct __svg_point __svg_point;
+struct __svg_point
+{
+   double x, y;
+};
+
+typedef struct __svg_points __svg_points;
+struct __svg_points
+{
+   int                count;
+   struct svgc_dlist *plist;
+};
+
+extern void __svg_free_point( void *data );
+extern void __svg_free_points( struct __svg_points *p );
+extern struct __svg_points *__svg_new_points( void );
+extern int __svg_add_point( struct __svg_points *ps, double x, double y );
+
+
+/***************************************************************
+  PATH CMDS:
+ ***************************************************************/
+
+typedef struct __svg_cmd __svg_cmd;
+struct __svg_cmd
+{
+   char                 cmd;
+   struct __svg_points *points;
+};
+
+typedef struct __svg_cmds __svg_cmds;
+struct __svg_cmds
+{
+   int                count;
+   struct svgc_dlist *plist;
+};
+
+extern void __svg_free_cmd( void *data );
+extern void __svg_free_cmds( struct __svg_cmds *cmds );
+extern struct __svg_cmd *__svg_new_cmd( char cmd, struct __svg_points *ps );
+extern struct __svg_cmds *__svg_new_cmds( void );
+extern int __svg_add_cmd( struct __svg_cmds *cmds, struct __svg_cmd *cmd );
+
+#define ABSOLUTE 1
+#define RELATIVE 0
+extern int 
+__svg_add_moveto_cmd( struct __svg_cmds *cmds,
+                      int                abs,
+                      double             x, 
+                      double             y );
+
+extern int 
+__svg_add_lineto_cmd( struct __svg_cmds *cmds,
+                      int                abs,
+                      double             x, 
+                      double             y );
+
+extern int 
+__svg_add_hlineto_cmd( struct __svg_cmds *cmds,
+                       int                abs,
+                       double             x );
+
+extern int 
+__svg_add_vlineto_cmd( struct __svg_cmds *cmds,
+                       int                abs,
+                       double             y );
+
+extern int 
+__svg_add_curveto_cmd( struct __svg_cmds *cmds,
+                       int                abs,
+                       double             x1,
+                       double             y1,
+                       double             x2,
+                       double             y2,
+                       double             x,
+                       double             y );
+extern int 
+__svg_add_short_curveto_cmd( struct __svg_cmds *cmds,
+                             int                abs,
+                             double             x2,
+                             double             y2,
+                             double             x,
+                             double             y );
+extern int 
+__svg_add_quadro_curveto_cmd( struct __svg_cmds *cmds,
+                              int                abs,
+                              double             x1,
+                              double             y1,
+                              double             x,
+                              double             y );
+extern int 
+__svg_add_short_quadro_curveto_cmd( struct __svg_cmds *cmds,
+                                    int                abs,
+                                    double             x,
+                                    double             y );
+
+extern int 
+__svg_add_arc_cmd( struct __svg_cmds *cmds,
+                   int                abs,
+                   double             rx,
+                   double             ry,
+                   double             x_axis_rotation,
+                   int                large_arc_flag,
+                   int                sweep_flag,
+                   double             x,
+                   double             y );
+
+extern int 
+__svg_add_closepath_cmd( struct __svg_cmds *cmds,
+                         int                abs );
+
+
+
+/***************************************************************
+  STYLE:
+ ***************************************************************/
+typedef struct __svg_rgb __svg_rgb;
+struct __svg_rgb
+{
+   int r, g, b;
+};
+
+
+#define STROKE_DEFAULT    "black"
+
+#define LINECAP_BUTT      "butt"
+#define LINECAP_ROUND     "round"
+#define LINECAP_SQUARE    "square"
+
+#define LINECAP_DEFAULT   "round"
+
+
+#define LINEJOIN_MITER    "miter"
+#define LINEJOIN_ROUND    "round"
+#define LINEJOIN_BEVEL    "bevel"
+
+#define LINEJOIN_DEFAULT  "round"
+
+
+#define DASHARRAY_DEFAULT "none"
+
+typedef struct __svg_stroke __svg_stroke;
+struct __svg_stroke
+{
+   struct __svg_rgb  stroke;
+   char             *use_stroke;
+
+   double            stroke_width;
+
+   char             *stroke_linecap;
+   char             *stroke_linejoin;
+   char             *stroke_dasharray;
+};
+
+
+#define FILL_DEFAULT "none"
+
+typedef struct __svg_fill __svg_fill;
+struct __svg_fill
+{
+   struct __svg_rgb  fill;
+   char             *use_fill;
+};
+
+
+#define STOP_COLOR_DEFAULT "black"
+
+typedef struct __svg_stop_color __svg_stop_color;
+struct __svg_stop_color
+{
+   struct __svg_rgb  stop_color;
+   char             *use_stop_color;
+};
+
+
+#define STOP_OPACITY_DEFAULT 1.0
+
+typedef struct __svg_stop_opacity __svg_stop_opacity;
+struct __svg_stop_opacity
+{
+   double stop_opacity;
+};
+
+
+typedef struct __svg_style __svg_style;
+struct __svg_style
+{
+   struct __svg_stroke       *stroke;
+   struct __svg_fill         *fill;
+   struct __svg_stop_color   *stop_color;
+   struct __svg_stop_opacity *stop_opacity;
+};
+
+
+#define TEXT_FILL_DEFAULT          "black"
+#define TEXT_FONT_FAMILY_DEFAULT   "Verdana"
+#define TEXT_FONT_SIZE_DEFAULT     12
+
+
+extern char *__svg_str_dup( const char *s );
+
+extern struct __svg_stroke *__svg_new_stroke( void );
+extern void __svg_free_stroke( struct __svg_stroke *s );
+extern struct __svg_fill *__svg_new_fill( void );
+extern void __svg_free_fill( struct __svg_fill *f );
+extern struct __svg_stop_color *__svg_new_stop_color( void );
+extern void __svg_free_stop_color( struct __svg_stop_color *sc );
+extern struct __svg_stop_opacity *__svg_new_stop_opacity( void );
+extern void __svg_free_stop_opacity( struct __svg_stop_opacity *so );
+
+extern struct __svg_style *__svg_new_style( void );
+extern void __svg_free_style( struct __svg_style *style );
+
+
+
+
+/* NODE: */
+
+#define SVG_SHEET        1
+#define SVG_LINE         2
+#define SVG_RECT         3
+#define SVG_CIRCLE       4
+#define SVG_ELLIPSE      5
+#define SVG_POLYGON      6
+#define SVG_POLYLINE     7
+#define SVG_PATH         8
+#define SVG_TEXT         9
+#define SVG_IMAGE       10
+#define SVG_L_GRADIENT  11
+#define SVG_R_GRADIENT  12
+#define SVG_CSS         13
+#define SVG_STOP        14
+#define SVG_SCRIPT      15
+
+typedef struct __svg_node __svg_node;
+struct __svg_node
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+};
+
+/* The MAIN svg nide is SHEET: */
+typedef struct __svg_sheet __svg_sheet;
+struct __svg_sheet
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   struct svgc_dlist  *defs;
+
+   double width, height;
+
+   double   left_margin;
+   double  right_margin;
+   double    top_margin;
+   double bottom_margin;
+};
+
+
+/***************************************************************
+  SVG primitives:
+ ***************************************************************/
+typedef struct __svg_line __svg_line;
+struct __svg_line
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   double x1, y1;
+   double x2, y2;
+};
+
+typedef struct __svg_rect __svg_rect;
+struct __svg_rect
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   double x, y;
+   double width, height;
+   double rx, ry;
+};
+
+typedef struct __svg_circle  __svg_circle;
+struct __svg_circle
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   double cx, cy, r;
+};
+
+typedef struct __svg_ellipse __svg_ellipse;
+struct __svg_ellipse
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   double  cx, cy, rx, ry;
+};
+
+typedef struct __svg_polygon __svg_polygon;
+struct __svg_polygon
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   struct __svg_points *points;
+};
+
+typedef struct __svg_polyline __svg_polyline;
+struct __svg_polyline
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   struct __svg_points *points;
+};
+
+typedef struct __svg_path __svg_path;
+struct __svg_path
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   struct __svg_cmds  *cmds;
+};
+
+typedef struct __svg_text __svg_text;
+struct __svg_text
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   double  x, y;
+   char   *text;
+
+   int     font_size;
+   char   *font_family;
+   char   *fill;
+};
+
+typedef struct __svg_image __svg_image;
+struct __svg_image
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   double  x, y;
+   int     width, height;
+   char   *href;
+   char   *title;
+};
+
+/* NOTE: this is common gradient struct */
+typedef struct __svg_gradient __svg_gradient;
+struct __svg_gradient
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   struct svgc_dlist  *stops;
+};
+
+/* NOTE: gradients are added into sheet list as defs */
+typedef struct __svg_l_gradient __svg_l_gradient;
+struct __svg_l_gradient
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   struct svgc_dlist  *stops;
+
+   char   *units;
+   char   *spread;
+
+   double  x1, y1;
+   double  x2, y2;
+};
+
+typedef struct __svg_r_gradient __svg_r_gradient;
+struct __svg_r_gradient
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   struct svgc_dlist  *stops;
+
+   char   *units;
+   char   *spread;
+
+   double  cx, cy;
+   double  r;
+   double  fx, fy;
+};
+
+/* NOTE: only for gradients */
+typedef struct __svg_stop __svg_stop;
+struct __svg_stop
+{
+   int                 type;
+   char               *id;
+   struct __svg_style *style;
+
+   double offset;
+};
+
+
+/***************************************************************
+  SCENE is the list of SVG primitives.
+ ***************************************************************/
+typedef struct __svg_scene __svg_scene;
+struct __svg_scene
+{
+   struct svgc_dlist *plist;
+};
+
+extern void __svg_free_scene( struct __svg_scene *scene );
+extern struct __svg_scene *__svg_new_scene( struct __svg_sheet *sheet );
+
+/***************************************************************
+  FREE and ADD SVG primitives.
+ ***************************************************************/
+extern void __svg_free_node( void *data );
+
+/* SVG sheet should be created before SCENE */
+extern struct __svg_node *__svg_new_sheet( double width,
+                                           double height,
+                                           double   left_margin,
+                                           double  right_margin,
+                                           double    top_margin,
+                                           double bottom_margin );
+
+extern int __svg_sheet_add_definition( void              *sheet,
+                                       struct __svg_node *definition );
+
+/* Insert the contents of a UTF-8 CSS file into sheet <defs>.
+   Return 1 on success, 0 on read/allocation/encoding failure, -1 on
+   invalid arguments. Relative url(...) references are resolved by the
+   SVG viewer against the generated SVG file, not against fname. */
+extern int __svg_sheet_add_css_file( struct __svg_sheet *sheet,
+                                     const char         *fname );
+
+/* Insert the contents of a UTF-8 JavaScript file into sheet <defs>.
+   The caller supplies JavaScript source, without XML, script tags or CDATA.
+   Return values and ownership follow __svg_sheet_add_css_file().
+   Script execution depends on the viewer; SVG used as <img> is inert. */
+extern int __svg_sheet_add_script_file( struct __svg_sheet *sheet,
+                                        const char         *fname );
+
+/***************************************************************
+  Creation of SVG primirives:
+ ***************************************************************/
+extern struct __svg_node *__svg_new_line( double x1,
+                                          double y1,
+                                          double x2,
+                                          double y2 );
+
+extern struct __svg_node *__svg_new_rect( double x,
+                                          double y,
+                                          double width,
+                                          double height,
+                                          double rx,
+                                          double ry );
+
+extern struct __svg_node *__svg_new_circle( double cx,
+                                            double cy,
+                                            double r );
+
+extern struct __svg_node *__svg_new_ellipse( double cx,
+                                             double cy,
+                                             double rx,
+                                             double ry );
+
+extern struct __svg_node *__svg_new_polygon ( struct __svg_points *ps );
+extern struct __svg_node *__svg_new_polyline( struct __svg_points *ps );
+extern struct __svg_node *__svg_new_path( struct __svg_cmds *cmds );
+
+extern struct __svg_node *__svg_new_text( double      x,
+                                          double      y,
+                                          const char *text,
+                                          const char *font_family,
+                                          int         font_size );
+
+extern struct __svg_node *__svg_new_image( double  x,
+                                           double  y,
+                                           int     width,
+                                           int     height,
+                                           char   *href,
+                                           char   *title );
+
+extern struct __svg_node *__svg_new_l_gradient( const char *units,  /* objectBoundingBox | userSpaceOnUse */
+                                                const char *spread, /* pad | reflect | repeat */
+                                                double      x1,
+                                                double      y1,
+                                                double      x2,
+                                                double      y2 );
+
+extern struct __svg_node *__svg_new_r_gradient( const char *units,  /* objectBoundingBox | userSpaceOnUse */
+                                                const char *spread, /* pad | reflect | repeat */
+                                                double      cx,
+                                                double      cy,
+                                                double      r,
+                                                double      fx,
+                                                double      fy );
+
+extern struct __svg_node *__svg_new_stop( double offset );
+
+extern int __svg_gradient_add_stop( void              *gradient,
+                                    struct __svg_stop *stop );
+
+
+/***************************************************************
+  Adding some primitive to SCENE:
+ ***************************************************************/
+extern int
+__svg_scene_add_node( struct __svg_scene *scene, struct __svg_node *node );
+
+
+/***************************************************************
+  Style controls:
+ ***************************************************************/
+extern int __svg_set_stroke( struct __svg_node *node, const char *stroke );
+extern int __svg_set_stroke_rgb( struct __svg_node *node, int r, int g, int b );
+extern int __svg_set_stroke_width( struct __svg_node *node, double width );
+extern int __svg_set_stroke_linecap( struct __svg_node *node, const char *linecap );
+extern int __svg_set_stroke_linejoin( struct __svg_node *node, const char *linejoin );
+extern int __svg_set_stroke_dasharray( struct __svg_node *node, const char *dasharray );
+
+extern int __svg_set_fill( struct __svg_node *node, const char *fill );
+extern int __svg_set_fill_rgb( struct __svg_node *node, int r, int g, int b );
+
+extern int __svg_set_stop_color( struct __svg_node *node, const char *stop_color );
+extern int __svg_set_stop_color_rgb( struct __svg_node *node, int r, int g, int b );
+
+extern int __svg_set_stop_opacity( struct __svg_node *node, double stop_opacity );
+
+extern int __svg_set_text_text( struct __svg_node *node, const char *text );
+extern int __svg_set_text_fill( struct __svg_node *node, const char *fill );
+extern int __svg_set_text_fill_rgb( struct __svg_node *node, int r, int g, int b );
+extern int __svg_set_text_font_family( struct __svg_node *node, const char *family );
+extern int __svg_set_text_font_size( struct __svg_node *node, int size );
+
+
+/* Set Global Default Values: */
+extern void __svg_set_scene_default_style( void );
+extern void __svg_set_scene_stroke( const char *stroke );
+extern void __svg_set_scene_stroke_rgb( int r, int g, int b );
+extern void __svg_set_scene_stroke_width( double width );
+extern void __svg_set_scene_stroke_linecap( const char *linecap );
+extern void __svg_set_scene_stroke_linejoin( const char *linejoin );
+extern void __svg_set_scene_stroke_dasharray( const char *dasharray );
+
+extern void __svg_set_scene_fill( const char *fill );
+extern void __svg_set_scene_fill_rgb( int r, int g, int b );
+
+extern void __svg_set_scene_stop_color( const char *stop_color );
+extern void __svg_set_scene_stop_color_rgb( int r, int g, int b );
+
+extern void __svg_set_scene_stop_opacity( double stop_opacity );
+
+extern void __svg_set_scene_text_fill( const char *fill );
+extern void __svg_set_scene_text_fill_rgb( int r, int g, int b );
+extern void __svg_set_scene_text_font_family( const char *family );
+extern void __svg_set_scene_text_font_size( int size );
+
+
+/* Get node ID: */
+extern const char *__svg_get_node_id( struct __svg_node *node );
+extern char *__svg_create_node_url( struct __svg_node *node );
+
+
+/***************************************************************
+  OUTPUT:
+ ***************************************************************/
+extern void __svg_paint_scene( struct __svg_scene *scene,
+                               int                 group,
+                               char               *fname );
+
+
+extern int _svgc_get_major_version( void );
+extern int _svgc_get_minor_version( void );
+extern int _svgc_get_micro_version( void );
+
+#if defined( __cplusplus )
+} /* extern "C" */
+#endif
+
+#endif /* __SVGC_H__ */