/****************************************************************************
- * RRDtool 1.2.1 Copyright by Tobi Oetiker, 1997-2005
+ * RRDtool 1.2.23 Copyright by Tobi Oetiker, 1997-2007
****************************************************************************
* 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
-
-
-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);
-/* create a new line */
-gfx_node_t *gfx_new_line (gfx_canvas_t *canvas,
- double X0, double Y0,
- double X1, double Y1,
- double width, gfx_color_t color);
+#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 };
+
+/* cairo color components */
+typedef struct gfx_color_t {
+ double red;
+ double green;
+ double blue;
+ double alpha;
+} gfx_color_t;
-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 line */
+void gfx_line(
+ cairo_t * cr,
+ double X0,
+ double Y0,
+ double X1,
+ double Y1,
+ double width,
+ gfx_color_t color);
+
+void gfx_dashed_line(
+ cairo_t * cr,
+ 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,
- gfx_color_t color);
+void gfx_new_area(
+ cairo_t * cr,
+ 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);
+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);
+void gfx_close_path(
+ cairo_t * cr);
/* create a text node */
-gfx_node_t *gfx_new_text (gfx_canvas_t *canvas,
- double x, double y, gfx_color_t color,
- char* font, double size,
- double tabwidth, double angle,
- enum gfx_h_align_en h_align,
- enum gfx_v_align_en v_align,
- char* text);
+void gfx_text(
+ cairo_t * cr,
+ double x,
+ double y,
+ gfx_color_t color,
+ char *font,
+ double size,
+ double tabwidth,
+ double angle,
+ enum gfx_h_align_en h_align,
+ enum gfx_v_align_en v_align,
+ const char *text);
/* measure width of a text string */
-double gfx_get_text_width ( gfx_canvas_t *canvas,
- 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);
-
+double gfx_get_text_width(
+ cairo_t * cr,
+ double start,
+ char *font,
+ double size,
+ double tabwidth,
+ 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