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improvement: ajust size of grid-dots with zoom-factor

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Introduced additional spinboxes in config-page for
setting min- and max-size of grid-dots separately for
diagram- and element-editor.
That assures maximal flexibility for setting the grids.
Don't want the grid-dots to change over zooming-levels?
Set min- and max-values to the same number.
Preset-values for all min-/max-values is "1".
If the adjustable range of 1 to 5 is not sufficient, it
can be easily adjusted. Only need feedback for this.
This commit is contained in:
plc-user
2025-03-07 20:16:21 +01:00
parent 2b0dd1b188
commit 0804d3524a
38 changed files with 2224 additions and 1596 deletions
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22
sources/diagram.cpp
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@@ -227,9 +227,27 @@ void Diagram::drawBackground(QPainter *p, const QRectF &r) {
points << QPoint(gx, gy);
}
}
pen.setWidth(settings.value(QStringLiteral("diagrameditor/grid_pointsize"), 1).toInt());
qreal zoom_factor = p->transform().m11();
int minWidthPen = settings.value(QStringLiteral("diagrameditor/grid_pointsize_min"), 1).toInt();
int maxWidthPen = settings.value(QStringLiteral("diagrameditor/grid_pointsize_max"), 1).toInt();
pen.setWidth(minWidthPen);
qreal stepPen = (maxWidthPen - minWidthPen) / (qreal)maxWidthPen;
qreal stepZoom = (5.0 - 1.0) / maxWidthPen;
for (int n=0; n<maxWidthPen; n++) {
if ((zoom_factor > (1.0 + n * stepZoom)) && (zoom_factor <= (1.0 + (n+1) * stepZoom))) {
int widthPen = minWidthPen + qRound(n * stepPen);
pen.setWidth(widthPen);
}
}
if (zoom_factor <= 1.0)
pen.setWidth(minWidthPen);
else if (zoom_factor > (1.0 + stepZoom * maxWidthPen))
pen.setWidth(maxWidthPen);
p -> setPen(pen);
p -> drawPoints(points);
if (zoom_factor > 0.5) // no grid below ... !
p -> drawPoints(points);
}
if (use_border_) border_and_titleblock.draw(p);