void createChart(int chartIndex, const char *filename) { // The value to display on the meter double value = 66.77; // Create a LinearMeter object of size 70 x 260 pixels with black background and rounded corners LinearMeter *m = new LinearMeter(70, 260, 0x000000); m->setRoundedFrame(Chart::Transparent); // Set the default text and line colors to white (0xffffff) m->setColor(Chart::TextColor, 0xffffff); m->setColor(Chart::LineColor, 0xffffff); // Set the scale region top-left corner at (36, 30), with size of 20 x 196 pixels. The scale // labels are located on the left (default - implies vertical meter). m->setMeter(36, 30, 20, 196); // Set meter scale from 0 - 100, with a tick every 10 units m->setScale(0, 100, 10); // Add the chart title at the top center TextBox *title = m->addText(m->getWidth() / 2, 5, "Temp C", "arialbd.ttf", 8, Chart::TextColor, Chart::TopCenter); // Move the scale labels 8 pixels from the meter scale to make room for the color scale m->setLabelPos(false, 8); // 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 highLowColorScale[] = {0, 0x0000ff, 40, Chart::Transparent, 60, Chart::Transparent, 100, 0xff0000}; double highColorScale[] = {70, Chart::Transparent, 100, 0xff0000}; 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 4-pixel thick smooth color scale at x = 29 (left of meter scale) m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0]))), 29, 4); } else if (chartIndex == 1) { // Add a yellow (0xCC9922) bar from 0 to value with bar lighting effect m->addBar(0, value, 0xcc9922, Chart::barLighting()); // Add a 4-pixel thick smooth color scale at x = 29 (left of meter scale) m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0]))), 29, 4); // Set the title style to black text on a yellow (0xcc9922) background with rounded corners title->setFontColor(0x000000); title->setBackground(0xcc9922); title->setRoundedCorners(2); } else if (chartIndex == 2) { // Add a grey (0xaaaaaa) bar from 0 to value with bar lighting effect m->addBar(0, value, 0xaaaaaa, Chart::barLighting()); // Add a 4-pixel high/low color scale at x = 29 (left of meter scale) m->addColorScale(DoubleArray(highLowColorScale, (int)(sizeof(highLowColorScale) / sizeof( highLowColorScale[0]))), 29, 4); } else if (chartIndex == 3) { // Add a brown (0xbb6622) bar from 0 to value with cylinder lighting effect m->addBar(0, value, 0xbb6622, Chart::cylinderEffect()); // Add a 4 pixel thick brown (0xbb6622) frame m->setThickFrame(4, 0xbb6622); // Add a high only color scale at x = 29 (left of meter scale) m->addColorScale(DoubleArray(highColorScale, (int)(sizeof(highColorScale) / sizeof( highColorScale[0]))), 29, 4); } else if (chartIndex == 4) { // Add a purple (0x7755ee) bar from 0 to value m->addBar(0, value, 0x7755ee); // Add a 4 pixel thick purple (0x880088) frame m->setThickFrame(4, 0x880088); // Add a 4-pixel high/low color scale at x = 29 (left of meter scale) m->addColorScale(DoubleArray(highLowColorScale, (int)(sizeof(highLowColorScale) / sizeof( highLowColorScale[0]))), 29, 4); } else { // Add a green (0x00bb00) bar from 0 to value with soft lighting effect and 4 pixel rounded // corners m->addBar(0, value, 0x00bb00, Chart::softLighting(), 4); // Add a 4-pixel step color scale at x = 29 (left of meter scale) m->addColorScale(DoubleArray(stepColorScale, (int)(sizeof(stepColorScale) / sizeof( stepColorScale[0]))), 29, 4); } // Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold // font on a black (0x000000) background with depressed grey (0x333333) rounded border. TextBox *t = m->addText(m->getWidth() / 2, m->getHeight() - 7, m->formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff, Chart::BottomCenter); t->setBackground(0x000000, 0x333333, -1); t->setRoundedCorners(3); // Output the chart m->makeChart(filename); //free up resources delete m; }
void createChart(int chartIndex, const char *filename) { // The value to display on the meter double value = 75.35; // Create a LinearMeter object of size 250 x 75 pixels with black background and rounded corners LinearMeter *m = new LinearMeter(250, 75, 0x000000); m->setRoundedFrame(Chart::Transparent); // Set the default text and line colors to white (0xffffff) m->setColor(Chart::TextColor, 0xffffff); m->setColor(Chart::LineColor, 0xffffff); // Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale // labels are located on the top (implies horizontal meter) m->setMeter(14, 23, 218, 20, Chart::Top); // Set meter scale from 0 - 100, with a tick every 10 units m->setScale(0, 100, 10); // The tick line width to 1 pixel m->setLineWidth(0, 1); // Demostrate different types of color scales and putting them at different positions double smoothColorScale[] = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000}; double stepColorScale[] = {0, 0x00cc00, 50, 0xeecc00, 80, 0xdd0000, 100}; double highLowColorScale[] = {0, 0x0000ff, 70, Chart::Transparent, 100, 0xff0000}; if (chartIndex == 0) { // Add the smooth color scale at the default position m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0])))); } else if (chartIndex == 1) { // Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending // at y = 23 with 20 pixels width m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0]))), 23, 0, 23, 20); } else if (chartIndex == 2) { // Add the high low scale at the default position m->addColorScale(DoubleArray(highLowColorScale, (int)(sizeof(highLowColorScale) / sizeof( highLowColorScale[0])))); } else if (chartIndex == 3) { // Add the smooth color scale starting at y = 33 (center of scale) with zero width and // ending at y = 23 with 20 pixels width m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0]))), 33, 0, 23, 20); } else if (chartIndex == 4) { // Add the step color scale at the default position m->addColorScale(DoubleArray(stepColorScale, (int)(sizeof(stepColorScale) / sizeof( stepColorScale[0])))); } else { // Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and // ending at y = 23 with 20 pixels width m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof( smoothColorScale[0]))), 43, 0, 23, 20); } // Add a blue (0x0000cc) pointer with white (0xffffff) border at the specified value m->addPointer(value, 0x0000cc, 0xffffff); // Add a label left aligned to (10, 61) using 8pt Arial Bold font m->addText(10, 61, "Temperature C", "arialbd.ttf", 8, Chart::TextColor, Chart::Left); // Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial // Bold font on a black (0x000000) background with depressed grey (0x444444) rounded border. TextBox *t = m->addText(235, 61, m->formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff, Chart::Right); t->setBackground(0x000000, 0x444444, -1); t->setRoundedCorners(3); // Output the chart m->makeChart(filename); //free up resources delete m; }