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ancient-weatherstation
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chart... 

(grid + headline)


git-svn-id: file:///home/jan/tmp/wetterstation/trunk@92 dd492736-c11a-0410-ad51-8c26713eaf7f
This commit is contained in:
losinshi 2006-09-14 18:01:24 +00:00
parent 035f37acea
commit 2a26ab6bb4
6 changed files with 88 additions and 12 deletions
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1
cronjob/chart/Makefile
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@ -56,6 +56,7 @@ image_file/image_data.o: image_file/image_data.c \
common.h \
definitions.h
image_file/image_draw.o: image_file/image_draw.c \
definitions.h \
image_file/image_draw.h \
image_file/image_data.h \
image_file/image_common.h

1
cronjob/chart/definitions.h
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@ -49,6 +49,7 @@
/* Verschiedenes ------------------------------------------------------- */
#define FALSE 0
#define TRUE 1
#define IMG_FONT "/usr/share/fonts/truetype/freefont/FreeSans.ttf"
/* Debug --------------------------------------------------------------- */

2
cronjob/chart/image_file/image_common.h
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@ -28,6 +28,8 @@ typedef struct image_cfg {
img_color_ptr dia_border_color;
img_color_ptr zero_line_color;
img_color_ptr label_color;
img_color_ptr headline_color;

1
cronjob/chart/image_file/image_config.c
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@ -59,6 +59,7 @@ static const config_keyword keywords[] = {
{"dia_border_color", read_color, &(img_cfg.dia_border_color), ""},
{"zero_line_color", read_color, &(img_cfg.zero_line_color), ""},
{"label_color", read_color, &(img_cfg.label_color), ""},
{"headline_color", read_color, &(img_cfg.headline_color), ""},
{"", NULL, NULL, ""}
};

89
cronjob/chart/image_file/image_draw.c
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@ -1,15 +1,30 @@
#include <stdio.h>
#include <gd.h>
#include "../definitions.h"
#include "image_draw.h"
#include "image_data.h"
#include "image_common.h"
typedef int color;
typedef struct dimension {
int width;
int height;
int l_t_x;
int l_t_y;
int l_b_x;
int l_b_y;
int r_b_x;
int r_b_y;
int r_t_x;
int r_t_y;
int to_base;
} dimension_t;
static gdImagePtr create_image();
static gdImagePtr draw_image(gdImagePtr);
static dimension_t calc_text_dim(char *, double , double );
static color alloc_alpha_color(gdImagePtr , img_color_ptr );
static void write_image_png(gdImagePtr, FILE *);
@ -18,6 +33,7 @@ int draw_to_file(FILE *fd){
gdImagePtr img = create_image();
draw_image(img);
write_image_png(img, fd);
gdImageDestroy(img);
}
/* Erstellt ein Bild mit Hintergrundfarbe */
@ -42,19 +58,32 @@ static gdImagePtr draw_image(gdImagePtr img){
int max_val = 0;
int min_val = 0;
int offset_x_left = 20;
int offset_y_top = 20;
int offset_x_left = 60;
int offset_y_top = 5;
int offset_x_right = 20;
int offset_y_bottom = 20;
int dia_width = img_cfg.width - offset_x_left - offset_x_right;
int dia_height = img_cfg.height - offset_y_top - offset_y_bottom;
int zero_line = 0;
int dia_y_padding = 10;
int brect[8];
dimension_t head_d;
dimension_t y_label_d;
dimension_t x_label_d;
color val_line_c = alloc_alpha_color(img, img_cfg.dia_line_color);
color zero_line_c = alloc_alpha_color(img, img_cfg.zero_line_color);
color dia_bg_c = alloc_alpha_color(img, img_cfg.dia_bg_color);
color diag_grid_c = alloc_alpha_color(img, img_cfg.dia_grid_color);
color dia_border_c = alloc_alpha_color(img, img_cfg.dia_border_color);
color headline_c = alloc_alpha_color(img, img_cfg.headline_color);
/* Ueberschrift */
head_d = calc_text_dim(img_cfg.headline, 16, 0);
gdImageStringTTF(img, &brect[0], headline_c, IMG_FONT, 16, 0, 10, offset_y_top + head_d.to_base, img_cfg.headline);
offset_y_top = (offset_y_top * 2) + head_d.height;
/* Werte holen */
pix_list = get_pix_list(dia_width);
@ -62,18 +91,14 @@ static gdImagePtr draw_image(gdImagePtr img){
/* Diagramhintergrund */
gdImageFilledRectangle(img, offset_x_left, offset_y_top, img_cfg.width - offset_x_right, img_cfg.height - offset_y_bottom, dia_bg_c);
/* horizontale linien + y - Labels */
y_labels = get_y_label_list(dia_height, dia_y_padding, 0);
for (; y_labels; y_labels = y_labels->next){
gdImageLine(img, offset_x_left, offset_y_top + y_labels->pos, img_cfg.width - offset_x_right, offset_y_top + y_labels->pos, diag_grid_c);
gdImageLine(img, offset_x_left - 2, offset_y_top + y_labels->pos, img_cfg.width - offset_x_right, offset_y_top + y_labels->pos, diag_grid_c);
}
/* y-Werte skalieren */
@ -82,7 +107,7 @@ static gdImagePtr draw_image(gdImagePtr img){
/* Vertikale linien + x - Labels*/
x_labels = get_x_label_list(dia_width);
for(; x_labels; x_labels = x_labels->next){
gdImageLine(img, offset_x_left + x_labels->pos, offset_y_top, offset_x_left + x_labels->pos, img_cfg.height - offset_y_bottom, diag_grid_c);
gdImageLine(img, offset_x_left + x_labels->pos, offset_y_top, offset_x_left + x_labels->pos, img_cfg.height - offset_y_bottom + 2, diag_grid_c);
}
/* Nullinie */
@ -95,7 +120,53 @@ static gdImagePtr draw_image(gdImagePtr img){
gdImageLine(img, (offset_x_left + pix_list->x_pix_coord), (zero_line + offset_y_top + pix_list->y_pix_coord), (offset_x_left + pix_list->next->x_pix_coord), (zero_line + offset_y_top + pix_list->next->y_pix_coord), val_line_c);
}
gdImageRectangle(img, offset_x_left, offset_y_top, img_cfg.width - offset_x_right, img_cfg.height - offset_y_bottom, dia_border_c);
}
static dimension_t calc_text_dim(char *text, double size, double angle){
int brect[8];
dimension_t dim;
int x_rt_lb = 0;
int x_rb_lt = 0;
int y_rt_lb = 0;
int y_rb_lt = 0;
gdImageStringTTF(NULL, &brect[0], 0, IMG_FONT, size, angle, 0,0, text);
dim.l_t_x = brect[6];
dim.l_t_y = brect[7];
dim.l_b_x = brect[0];
dim.l_b_y = brect[1];
dim.r_b_x = brect[2];
dim.r_b_y = brect[3];
dim.r_t_x = brect[4];
dim.r_t_y = brect[5];
dim.to_base = 0 - dim.l_t_y;
//printf("%d -- %d\n", dim.l_t_y, dim.r_t_y);
x_rt_lb = dim.r_t_x - dim.l_b_x;
x_rb_lt = dim.r_b_x - dim.l_t_x;
y_rt_lb = dim.r_t_y - dim.l_b_y;
y_rb_lt = dim.r_b_y - dim.l_t_y;
if(x_rt_lb < x_rb_lt){
dim.width = x_rb_lt;
} else {
dim.width = x_rt_lb;
}
if(y_rt_lb < y_rb_lt){
dim.height = y_rb_lt;
} else {
dim.height = y_rt_lb;
}
return dim;
}

6
cronjob/chart/image_file/testimage.conf
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@ -16,7 +16,7 @@ bg_color DF:DF:EF:00 #test
dia_bg_color F0:A0:D0:D0 #test
zero_line_color BF:80:80:40 #test
dia_line_color 60:30:50:30 #test
dia_grid_color 00:00:00:EF #test
dia_border_color 60:30:50:af #test
dia_grid_color 60:60:60:EF #test
dia_border_color a0:a0:a0:af #test
label_color 60:30:50:af #test
#dia_color 60:30:50:af #test
headline_color 50:10:10:30 #test