| 1 |
<%pre> |
| 2 |
#include <tntdb/connect.h> |
| 3 |
#include <tntdb/connection.h> |
| 4 |
#include <tntdb/result.h> |
| 5 |
#include <tntdb/row.h> |
| 6 |
|
| 7 |
|
| 8 |
#include "gd-cpp/gdpp.h" |
| 9 |
#include <gdfonts.h> |
| 10 |
#include <sstream> |
| 11 |
|
| 12 |
</%pre> |
| 13 |
<%config> |
| 14 |
dburl; |
| 15 |
</%config> |
| 16 |
<%args> |
| 17 |
int id; |
| 18 |
</%args> |
| 19 |
<{ |
| 20 |
reply.setHeader("Cache-Control", "no-cache, must-revalidate"); // Http/1.1 |
| 21 |
reply.setHeader("Expires", "Mon, 26 Jul 1997 05:00:00 GMT"); //date in the past |
| 22 |
|
| 23 |
GD::Image image; |
| 24 |
image.Create( GD::Size(600,360)); |
| 25 |
|
| 26 |
//Black color scheme |
| 27 |
//GD::TrueColor decoration(45,95,0); |
| 28 |
//GD::TrueColor text(200,200,200); |
| 29 |
//GD::TrueColor line(255,0,0); |
| 30 |
|
| 31 |
//White color scheme |
| 32 |
int white = image.ColorAllocate(255,255,255); |
| 33 |
int decoration = image.ColorAllocate(60,60,60); |
| 34 |
int text = image.ColorAllocate(0,0,0); |
| 35 |
int line = image.ColorAllocate(255,0,0); |
| 36 |
|
| 37 |
image.Fill( GD::Point(1,1), white ); |
| 38 |
|
| 39 |
image.String(gdFontSmall, 250,5, "Temperature graph", text); |
| 40 |
image.String(gdFontSmall, 200,18, "Latest 20 samples, in degrees Celcius", text); |
| 41 |
|
| 42 |
for (int i=0; i<11; ++i) |
| 43 |
{ |
| 44 |
std::stringstream marker; |
| 45 |
marker << (100- (i*10)); |
| 46 |
int y = (i*30) + 40; |
| 47 |
image.Line( 30, y, 590, y, decoration); |
| 48 |
|
| 49 |
image.String(gdFontSmall, 5, y-7, marker.str().c_str(), text); |
| 50 |
|
| 51 |
} |
| 52 |
///////////////////////////////////////////////// |
| 53 |
|
| 54 |
|
| 55 |
tntdb::Connection conn = tntdb::connectCached(dburl); |
| 56 |
|
| 57 |
std::stringstream query; |
| 58 |
query << "SELECT temperature FROM ( "; |
| 59 |
query << " SELECT messagenr,temperature FROM logtable "; |
| 60 |
query << " WHERE installationnr = " << id << " "; |
| 61 |
query << " ORDER BY messagenr DESC LIMIT 20 "; |
| 62 |
query << ") query "; |
| 63 |
query << "ORDER BY messagenr ASC"; |
| 64 |
|
| 65 |
tntdb::Result res = conn.select(query.str()); |
| 66 |
|
| 67 |
GD::Point previous; |
| 68 |
for (unsigned int i=0; i<res.size(); ++i) |
| 69 |
{ |
| 70 |
int current = res[i].getInt(0); |
| 71 |
int x = (i*28) + 45; |
| 72 |
int y = ((100-current) * 3) + 40; |
| 73 |
|
| 74 |
//image.FilledArc( GD::Point(x,y), GD::Size(3,3), 0, 360, line.Int(), gdPie); |
| 75 |
image.FilledRectangle( GD::Point(x-1,y-1), GD::Point(x+1,y+1), line ); |
| 76 |
|
| 77 |
if (i>0) |
| 78 |
{ |
| 79 |
image.Line( GD::Point(x,y), previous, line); |
| 80 |
} |
| 81 |
|
| 82 |
previous = GD::Point(x,y); |
| 83 |
|
| 84 |
} |
| 85 |
|
| 86 |
////////////////////////////////////////////////// |
| 87 |
// echo the image to the browser... |
| 88 |
reply.setContentType("image/png"); |
| 89 |
int size; |
| 90 |
unsigned char* ptr = (unsigned char*) image.Png(&size,1); |
| 91 |
|
| 92 |
for (int i=0; i<size; ++i) |
| 93 |
reply.out() << ptr[i]; |
| 94 |
|
| 95 |
gdFree(ptr); |
| 96 |
|
| 97 |
}> |
Parent Directory
| 
Revision Log