mirror of
https://github.com/subsurface/subsurface.git
synced 2024-12-01 06:30:26 +00:00
7339dc28ae
Add a source file and a header file, which implement the color scheme used by the statistics module. Besides a few color constants, the centerpiece is a function that returns the color representing a bin and an appropriate label color. It picks a roughly equi-distant set of colors out of an already balanced set of 50 candidate colors. And it also picks white as text color when adding a label to a segment with a dark color. The color list was created using a tool by Gregor Aisch that is available on GitHub as https://github.com/gka/palettes to create multi-hued, multi-stop color scales that are safe for color blind people. This commit contains code from three authors. Dirk (main author): adaptive color scheme. Willem: Colors of single-bin charts and lines. Berthold: Infrastructure. Signed-off-by: Dirk Hohndel <dirk@hohndel.org> Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za> Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
36 lines
1.6 KiB
C++
36 lines
1.6 KiB
C++
#include "statscolors.h"
|
|
|
|
// Colors created using the Chroma.js Color Palette Helper
|
|
// https://vis4.net/palettes/#/50|d|00108c,3ed8ff,ffffe0|ffffe0,ff005e,743535|1|1
|
|
static const QColor binColors[] = {
|
|
QRgb(0x00108c), QRgb(0x0f1c92), QRgb(0x1a2798), QRgb(0x23319d), QRgb(0x2a3ba3),
|
|
QRgb(0x3144a8), QRgb(0x374eae), QRgb(0x3e58b3), QRgb(0x4461b8), QRgb(0x4b6bbd),
|
|
QRgb(0x5274c2), QRgb(0x587ec7), QRgb(0x6088cc), QRgb(0x6791d0), QRgb(0x6f9bd4),
|
|
QRgb(0x78a5d8), QRgb(0x81aedb), QRgb(0x8ab8df), QRgb(0x95c2e2), QRgb(0xa0cbe4),
|
|
QRgb(0xacd5e6), QRgb(0xb9dee7), QRgb(0xc7e7e7), QRgb(0xd7efe7), QRgb(0xeaf8e4),
|
|
QRgb(0xfff5d8), QRgb(0xffead0), QRgb(0xffe0c8), QRgb(0xffd5c0), QRgb(0xffcab8),
|
|
QRgb(0xffbfb0), QRgb(0xffb4a8), QRgb(0xffa99f), QRgb(0xfc9e98), QRgb(0xf99490),
|
|
QRgb(0xf48b89), QRgb(0xf08182), QRgb(0xea787b), QRgb(0xe46f74), QRgb(0xde666e),
|
|
QRgb(0xd75e67), QRgb(0xcf5661), QRgb(0xc64f5b), QRgb(0xbd4855), QRgb(0xb3434f),
|
|
QRgb(0xa83e49), QRgb(0x9d3a44), QRgb(0x90383f), QRgb(0x83363a), QRgb(0x743535)
|
|
};
|
|
|
|
// Pick roughly equidistant colors out of the color set above
|
|
// if we need more bins than we have colors (what chart is THAT?) simply loop
|
|
QColor binColor(int bin, int numBins)
|
|
{
|
|
if (numBins == 1 || bin < 0 || bin >= numBins)
|
|
return fillColor;
|
|
if (numBins > (int)std::size(binColors))
|
|
return binColors[bin % std::size(binColors)];
|
|
|
|
// use integer math to spread out the indices
|
|
int idx = bin * (std::size(binColors) - 1) / (numBins - 1);
|
|
return binColors[idx];
|
|
}
|
|
|
|
// Figure out if we want a light or a dark label
|
|
QColor labelColor(int bin, size_t numBins)
|
|
{
|
|
return (binColor(bin, numBins).lightness() < 150) ? lightLabelColor : darkLabelColor;
|
|
}
|