* we are now creating true RGBA pngs

[rrdtool.git] / src / rrd_gfx.h

diff --git a/src/rrd_gfx.h b/src/rrd_gfx.h
index 808b7c4..8dfc6d3 100644 (file)
--- a/src/rrd_gfx.h
+++ b/src/rrd_gfx.h
@@ -1,5 +1,5 @@
 /****************************************************************************
- * RRDtool 1.1.x  Copyright Tobias Oetiker, 1997 - 2001
+ * RRDtool 1.2rc6  Copyright by Tobi Oetiker, 1997-2005
  ****************************************************************************
  * rrd_gfx.h generic graphics adapter library
  ****************************************************************************/
@@ -7,8 +7,12 @@
 #ifndef  RRD_GFX_H
 #define RRD_GFX_H
 #define LIBART_COMPILATION
-#include <libart.h>
 
+#include <libart_lgpl/libart.h>
+#include <libart_lgpl/art_rgba.h>
+#include "art_rgba_svp.h"
+
+enum gfx_if_en {IF_PNG=0,IF_SVG,IF_EPS,IF_PDF};
 enum gfx_en { GFX_LINE=0,GFX_AREA,GFX_TEXT };
 enum gfx_h_align_en { GFX_H_NULL=0, GFX_H_LEFT, GFX_H_RIGHT, GFX_H_CENTER };
 enum gfx_v_align_en { GFX_V_NULL=0, GFX_V_TOP,  GFX_V_BOTTOM, GFX_V_CENTER };
@@ -18,13 +22,15 @@ typedef struct  gfx_node_t {
   enum gfx_en   type;         /* type of graph element */
   gfx_color_t   color;        /* color of element  0xRRGGBBAA  alpha 0xff is solid*/
   double        size;         /* font size, line width */
-  ArtVpath      *path;        /* path */
+  double        dash_on, dash_off; /* dash line fragments lengths */
+  int           closed_path;
   int           points;
   int           points_max;
-  ArtSVP        *svp;         /* svp */
   char *filename;             /* font or image filename */
   char *text;
+  ArtVpath      *path;        /* path */
   double        x,y;          /* position */
+  double        angle;        /* text angle */
   enum gfx_h_align_en halign; /* text alignement */
   enum gfx_v_align_en valign; /* text alignement */
   double        tabwidth; 
@@ -36,27 +42,38 @@ typedef struct gfx_canvas_t
 {
     struct gfx_node_t *firstnode;
     struct gfx_node_t *lastnode;
+    enum gfx_if_en imgformat;      /* image format */
+    int            interlaced;     /* will the graph be interlaced? */
+    double         zoom;           /* zoom for graph */
 } gfx_canvas_t;
 
-
 gfx_canvas_t *gfx_new_canvas (void);
 
 /* create a new line */
 gfx_node_t   *gfx_new_line   (gfx_canvas_t *canvas, 
-                             double x0, double y0, 
-                             double x1, double y1,
+                             double X0, double Y0, 
+                             double X1, double Y1,
                              double width, gfx_color_t color);
 
+gfx_node_t   *gfx_new_dashed_line   (gfx_canvas_t *canvas, 
+                             double X0, double Y0, 
+                             double X1, double Y1,
+                             double width, gfx_color_t color,
+                             double dash_on, double dash_off);
+
 /* create a new area */
 gfx_node_t   *gfx_new_area   (gfx_canvas_t *canvas, 
-                             double x0, double y0,
-                             double x1, double y1,
-                             double x2, double y2,
+                             double X0, double Y0,
+                             double X1, double Y1,
+                             double X2, double Y2,
                              gfx_color_t  color);
 
 /* add a point to a line or to an area */
 int           gfx_add_point  (gfx_node_t *node, double x, double y);
 
+/* close current path so it ends at the same point as it started */
+void          gfx_close_path  (gfx_node_t *node);
+
 
 /* create a text node */
 gfx_node_t   *gfx_new_text   (gfx_canvas_t *canvas,  
@@ -68,23 +85,40 @@ gfx_node_t   *gfx_new_text   (gfx_canvas_t *canvas,
                               char* text);
 
 /* measure width of a text string */
-double gfx_get_text_width ( double start, char* font, double size,                           
-                           double tabwidth, char* text);
+double gfx_get_text_width ( gfx_canvas_t *canvas,
+                           double start, char* font, double size,
+                           double tabwidth, char* text, int rotation);
 
-
-
-/* turn graph into a png image */
-int       gfx_render_png (gfx_canvas_t *canvas,
+/* save image to file */
+int       gfx_render (gfx_canvas_t *canvas,
                               art_u32 width, art_u32 height,
-                              double zoom,
                               gfx_color_t background, FILE *fo);
-                                                                                          
-                                                                                         
+
 /* free memory used by nodes this will also remove memory required for
    node chain and associated material */
 int           gfx_destroy    (gfx_canvas_t *canvas); 
 
-#endif
 
+/* PNG support*/
+int       gfx_render_png (gfx_canvas_t *canvas,
+                              art_u32 width, art_u32 height,
+                              gfx_color_t background, FILE *fo);
+double gfx_get_text_width_libart ( double start, char* font, double size,
+                           double tabwidth, char* text, int rotation);
 
+/* SVG support */
+int       gfx_render_svg (gfx_canvas_t *canvas,
+                              art_u32 width, art_u32 height,
+                              gfx_color_t background, FILE *fo);
 
+/* EPS support */
+int       gfx_render_eps (gfx_canvas_t *canvas,
+                              art_u32 width, art_u32 height,
+                              gfx_color_t background, FILE *fo);
+
+/* PDF support */
+int       gfx_render_pdf (gfx_canvas_t *canvas,
+                              art_u32 width, art_u32 height,
+                              gfx_color_t background, FILE *fo);
+
+#endif