Notes.md

Notes

• IDEA: store signal xPtrs in Signal
• X-scale glitch:
  • ✓ Start
  • ✓ X-zoom in
  • ✓ X-resize to max
  • × X-zoom out

Signal table:

• QTableWidget + Line in cell
• QGridLayout + Line
• QGraphicalGridLayout + Line
• QRubberBand (band)
• QSizeGrip (grip == catch (band))
• RTFM QHeaderView (resize by margin: mouseXEvent())
• QSplitters: parent widget not v-resizable
• QListWidget + Line as cell: rows not v-resizable
• QTableWidget + Line ac cell: too complex

Variants:

• QTableWidget:
  • ⊖ not resizable by cells
  • ⊖ cell independent
• QTableWidget + Lines as cells
  • ⊕ Drop over only
  • ⊖ Too complex calc/navigation
• QTableWidget + Lines in cells
• QListWidget:
  • not resizable rows
  • not resizable col (?)
• QAbstractItemView + (QAbstractItemDelegate | model):
  • ...
• QGridLayout + Lines
• QSplitter x 2:
  • ⊖ not v-resize parent widget
  • ⊖ DnD
  • ⊖ not scrollable
• QGraphics*:
  • QGraphicsLayout:
    • QGraphicsGridLayout
    • QGraphicsAnchorLayout (examples/graphicsviews/anchorlayout.py)

Line = QFrame().setFrameShape(QtWidgets.QFrame.VLine)

YSlider

Variants:

• chg pagestep (range = base * zoom_y_max)
• chg range (page = base)

X-scaling:

• Main value: precision (px/s):
  • min: ... (1px = 1ms, grid = 100ms, 1s == 1 Kpx)
  • max: ... (1px = 1μs, grid = 0.1ms, 1s = 1 Mpx)
• Steps (10):
  • prec (px/s): 1/2/5 * 10ⁿ (n = 3..6) = 1K..1M
  • px weight (μs/px): 1..1000

2do:

Dst:

• XScroller
• TopBar
• BarPlot

Src:

• Signal windows resize (TopBar):
  • XScroller:
    • setPageSize(TopBar width)
    • setMaximum(x_width - pageSize())
    • [setValue(recalc)]
  • TopBar/BarPlot: rerange_x
• x-zoom:
  • XScroller:
    • setMaximum(x_width - pageSize())
    • [setValue(recalc)]
  • TopBar/BarPlot:
    • rerange_x
    • grid
• XScroller value change:
  • TopBar/BarPlot: rerange_x

Samples:

• IMF3R-7783--13-03-11-15-19-07.cfg:
  • Samples: 120
  • Freq: 50 Hz
  • Rate: 600 Hz
  • SPP: 12
  • Sample width, ms: 1.(6)
  • Z-point: №49

RTFM

• PyQt5 Tutorial
• Another tutorial
• Qt:

CVD

• PqyQt5/examples/:
  • widgets/windowsflags.py
  • graphicsview/diagramscene/py (gfx items)
• QCPPolarGraph announce
• Habr:
  • good
  • bad1
  • bad2
  • code