QCustomDivergingBarChart
QCustomDivergingBarChart ships in Custom Widgets Pro. The free package under GPLv3 does not include it.
A diverging (bipolar / up-down) bar chart.
Each category is ONE column split across a zero axis: an UPWARD segment
(e.g. income, upColor) and a DOWNWARD segment (e.g. expense/expenditure,
downColor), so a single slot carries two colours and two signs. A
configurable zeroGap leaves clear space between the + and - bars around
the zero line (as in cash-flow dashboards). Painted (no QtCharts) so it is
crisp at any size and needs no toolbar/legend.
This is the diverging sibling of QCustomMiniBarChart. Give data via setData(up, down, labels) in code, or the upCsv / downCsv / labelsCsv properties in Qt Designer. Optional y-axis (gridlines + prefixed/suffixed value labels, e.g. "EUR 5K") and x labels underneath.
At a glance
| Tier | Pro |
| Import | from Custom_Widgets.QCustomDivergingBarChart import QCustomDivergingBarChart |
| Qt Designer | Yes — drag it from the palette |
Quick start
from Custom_Widgets.QCustomDivergingBarChart import QCustomDivergingBarChart
widget = QCustomDivergingBarChart()
Dark theme
Colours come from the design tokens, so the widget follows the app theme with no extra work.
Properties
Every property below is settable in code and in Qt Designer.
| Property | Type | Default |
|---|---|---|
upCsv | string | 1.2,3.1,2.4,0.9,1.1,4.2,3.0,2.0 |
downCsv | string | 0.9,1.4,2.6,0.7,0.9,1.7,1.2,1.3 |
labelsCsv | string | — |
upColor | color | #123f39 |
downColor | color | #34d17a |
barWidth | int | 12 |
cornerRadius | int | 3 |
zeroGap | int | 8 |
showAxis | bool | True |
showLabels | bool | True |
axisPrefix | string | — |
axisSuffix | string | — |
gridColor | color | #e6e9ec |
axisTextColor | color | #8b93a1 |
Methods
| Method | Description |
|---|---|
axisPrefix(*args, **kwargs) | Axis prefix. |
axisSuffix(*args, **kwargs) | Axis suffix. |
axisTextColor(*args, **kwargs) | Axis text color. |
barWidth(*args, **kwargs) | Bar width. |
cornerRadius(*args, **kwargs) | Corner radius. |
downColor(*args, **kwargs) | Down color. |
downCsv(*args, **kwargs) | Down csv. |
downValues() | Down values. |
gridColor(*args, **kwargs) | Grid color. |
labelsCsv(*args, **kwargs) | Labels csv. |
setColors(up_color, down_color) | Set the colors. |
setData(up, down, labels=None) | Set both series at once. up = upward (income) values, down = |
setDownValues(values) | Set the down values. |
setLabels(labels) | Set the labels. |
setTickStep(step) | Axis gridline/label step in data units (0 = auto). |
setUpValues(values) | Set the up values. |
showAxis(*args, **kwargs) | Show the axis. |
showLabels(*args, **kwargs) | Show the labels. |
upColor(*args, **kwargs) | Up color. |
upCsv(*args, **kwargs) | Up csv. |
upValues() | Up values. |
zeroGap(*args, **kwargs) | Zero gap. |
Theming
Colours come from the design tokens, so they follow the active theme. Roles used: accent.
See Design tokens.
Related
QCustomAreaChart · QCustomBarChart · QCustomBeeswarm · QCustomBubbleChart · QCustomCandlestickChart · QCustomCompass · QCustomCompassDial · QCustomDonut