pyq5 interface design
self._color = QColor("#7F000000")
The color here has eight hexadecimal digits, and the last six digits are normal color codes, as shown in the figure below: the
first two digits are alpha transparency, and the transparency has a total of 256 levels (0~255), 255 means 100% opacity. 0% means 100% transparent
Take the first line of code as an example: first convert the hexadecimal 7F to decimal, that is, 127, 127/255 = 50%, which means 50% opaque.
If you want to get a black with 25% transparency, 25% * 255 = 63.75 is rounded to 64 and converted to hexadecimal, which is 40.
Corresponding form:
| Percentile | Opacity |
|---|---|
| 100% | FF |
| 95% | F2 |
| 90% | E6 |
| 85% | D9 |
| 80% | CC |
| 75% | BF |
| 70% | B3 |
| 65% | A6 |
| 60% | 99 |
| 55% | 8C |
| 50% | 80 |
| 45% | 73 |
| 40% | 66 |
| 35% | 59 |
| 30% | 4D |
| 25% | 40 |
| 20% | 33 |
| 15% | 26 |
| 10% | 1A |
| 5% | 0D |
| 0% | 00 |
Refer to ARGB transparency conversion