





This example demonstrates vertical bar meters in a white coloring scheme, and with bars in various shading styles.
ChartDirector 6.0 (C++ Edition)
White Vertical Bar Meters
Source Code Listing
#include "chartdir.h" void createChart(int chartIndex, const char *filename) { // The value to display on the meter double value = 74.25; // Create a LinearMeter object of size 70 x 260 pixels with very light grey (0xeeeeee) // backgruond and a grey (0xbbbbbb) 3-pixel thick rounded frame LinearMeter *m = new LinearMeter(70, 260, 0xeeeeee, 0xbbbbbb); m->setRoundedFrame(Chart::Transparent); m->setThickFrame(3); // Set the scale region top-left corner at (28, 33), with size of 20 x 194 pixels. The scale // labels are located on the left (default - implies vertical meter). m->setMeter(28, 33, 20, 194); // Set meter scale from 0 - 100, with a tick every 10 units m->setScale(0, 100, 10); // Demostrate different types of color scales double smoothColorScale[] = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000}; double stepColorScale[] = {0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 100}; double highColorScale[] = {70, Chart::Transparent, 100, 0xff0000}; double lowColorScale[] = {0, 0x0000ff, 30, Chart::Transparent}; if (chartIndex == 0) { // Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners m->addBar(0, value, 0x0088ff, Chart::glassEffect(Chart::NormalGlare, Chart::Left), 4); // Add a 6-pixel thick smooth color scale at x = 53 (right of meter scale) m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0]))), 53, 6); } else if (chartIndex == 1) { // Add a green (0x00cc00) bar from 0 to value with bar lighting effect and 4 pixel rounded // corners m->addBar(0, value, 0x00cc00, Chart::barLighting(), 4); // Add a high only color scale at x = 52 (right of meter scale) with thickness varying from // 0 to 8 m->addColorScale(DoubleArray(highColorScale, (int)(sizeof(highColorScale) / sizeof( highColorScale[0]))), 52, 0, 52, 8); // Add a low only color scale at x = 52 (right of meter scale) with thickness varying from 8 // to 0 m->addColorScale(DoubleArray(lowColorScale, (int)(sizeof(lowColorScale) / sizeof( lowColorScale[0]))), 52, 8, 52, 0); } else if (chartIndex == 2) { // Add a purple (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners m->addBar(0, value, 0x8833dd, Chart::glassEffect(Chart::NormalGlare, Chart::Left), 4); // Add a high only color scale at x = 52 (right of meter scale) with thickness varying from // 0 to 8 m->addColorScale(DoubleArray(highColorScale, (int)(sizeof(highColorScale) / sizeof( highColorScale[0]))), 52, 0, 52, 8); } else if (chartIndex == 3) { // Add a orange (0xff8800) bar from 0 to value with cylinder lighting effect m->addBar(0, value, 0xff8800, Chart::cylinderEffect()); // Add a high only color scale at x = 53 (right of meter scale) m->addColorScale(DoubleArray(highColorScale, (int)(sizeof(highColorScale) / sizeof( highColorScale[0]))), 53, 6); } else if (chartIndex == 4) { // Add a red (0xee3333) bar from 0 to value with glass effect and 4 pixel rounded corners m->addBar(0, value, 0xee3333, Chart::glassEffect(Chart::NormalGlare, Chart::Left), 4); // Add a step color scale at x = 53 (right of meter scale) m->addColorScale(DoubleArray(stepColorScale, (int)(sizeof(stepColorScale) / sizeof( stepColorScale[0]))), 53, 6); } else { // Add a grey (0xaaaaaa) bar from 0 to value m->addBar(0, value, 0xaaaaaa); // Add a smooth color scale at x = 52 (right of meter scale) with thickness varying from 0 // to 8 m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0]))), 52, 0, 52, 8); } // Add a title using 8pt Arial Bold font with grey (0xbbbbbb) background m->addTitle("Temp C", "arialbd.ttf", 8, Chart::TextColor)->setBackground(0xbbbbbb); // Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold // font on a black (0x000000) background with rounded border. TextBox *t = m->addText(m->getWidth() / 2, m->getHeight() - 8, m->formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff, Chart::Bottom); t->setBackground(0x000000); t->setRoundedCorners(3); t->setMargin(5, 5, 2, 1); // Output the chart m->makeChart(filename); //free up resources delete m; } int main(int argc, char *argv[]) { createChart(0, "whitevbarmeter0.png"); createChart(1, "whitevbarmeter1.png"); createChart(2, "whitevbarmeter2.png"); createChart(3, "whitevbarmeter3.png"); createChart(4, "whitevbarmeter4.png"); createChart(5, "whitevbarmeter5.png"); return 0; } |