* rrd_gfx.h generic graphics adapter library
****************************************************************************/
-#ifndef RRD_GFX_H
+#ifndef RRD_GFX_H
#define RRD_GFX_H
-#define LIBART_COMPILATION
-#define y0 libart_y0
-#define y1 libart_y1
-#define gamma libart_gamma
-#include <libart_lgpl/libart.h>
-#include <libart_lgpl/art_rgba.h>
-#include "art_rgba_svp.h"
-#undef gamma
-#undef y0
-#undef y1
+#define y0 cairo_y0
+#define y1 cairo_y1
+#define index cairo_index
+#include <cairo-pdf.h>
+#include <cairo-svg.h>
+#include <cairo-ps.h>
+#include <pango/pangocairo.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 };
-enum gfx_aa_type_en { AA_NORMAL = 0, AA_LIGHT, AA_NONE };
-typedef unsigned long gfx_color_t;
-
-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 */
- double dash_on, dash_off; /* dash line fragments lengths */
- int closed_path;
- int points;
- int points_max;
- 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;
- struct gfx_node_t *next;
-} gfx_node_t;
-
-
-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 */
- double font_aa_threshold; /* no anti-aliasing for sizes <= */
- enum gfx_aa_type_en aa_type; /* anti-aliasing type (normal/light/none) */
-} gfx_canvas_t;
-
-gfx_canvas_t *gfx_new_canvas(
- void);
+
+/* cairo color components */
+typedef struct gfx_color_t {
+ double red;
+ double green;
+ double blue;
+ double alpha;
+} gfx_color_t;
+
/* create a new line */
-gfx_node_t *gfx_new_line(
- gfx_canvas_t *canvas,
+void gfx_line(
+ cairo_t * cr,
double X0,
double Y0,
double X1,
double width,
gfx_color_t color);
-gfx_node_t *gfx_new_dashed_line(
- gfx_canvas_t *canvas,
+void gfx_dashed_line(
+ cairo_t * cr,
double X0,
double Y0,
double X1,
double dash_off);
/* create a new area */
-gfx_node_t *gfx_new_area(
- gfx_canvas_t *canvas,
+void gfx_new_area(
+ cairo_t * cr,
double X0,
double Y0,
double X1,
gfx_color_t color);
/* add a point to a line or to an area */
-int gfx_add_point(
- gfx_node_t *node,
+void gfx_add_point(
+ cairo_t * cr,
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);
+ cairo_t * cr);
/* create a text node */
-gfx_node_t *gfx_new_text(
- gfx_canvas_t *canvas,
+void gfx_text(
+ cairo_t * cr,
double x,
double y,
gfx_color_t color,
double angle,
enum gfx_h_align_en h_align,
enum gfx_v_align_en v_align,
- char *text);
+ const char *text);
/* measure width of a text string */
double gfx_get_text_width(
- gfx_canvas_t *canvas,
+ cairo_t * cr,
double start,
char *font,
double size,
double tabwidth,
- char *text,
- int rotation);
-
-/* save image to file */
-int gfx_render(
- gfx_canvas_t *canvas,
- art_u32 width,
- art_u32 height,
- 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);
-
-
-/* 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(
- gfx_canvas_t *canvas,
- 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);
+ char *text);
+
+/* convert color */
+gfx_color_t gfx_hex_to_col(
+ long unsigned int);
+void gfx_line_fit(
+ cairo_t *,
+ double *,
+ double *);
+void gfx_area_fit(
+ cairo_t *,
+ double *,
+ double *);
#endif
projects / rrdtool.git / blobdiff