2ndbeam/lines-grid-editor
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Grid painting

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This commit is contained in:
Alexey 2025-06-27 16:15:39 +03:00
commit e24837649c
3 changed files with 92 additions and 2 deletions
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77
gridpreview.cpp
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@ -2,7 +2,11 @@
GridPreview::GridPreview(QWidget *parent)
: QWidget{parent}
{}
{
colorMap.insert(QString("red"), Qt::red);
colorMap.insert(QString("green"), Qt::green);
colorMap.insert(QString("blue"), Qt::blue);
}
void GridPreview::setSize(int newWidth, int newHeight)
{
@ -32,3 +36,74 @@ QString GridPreview::toLuaTable()
linesSubTable.removeLast(); // ,
return output.arg(linesSubTable);
}
void GridPreview::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
QPen pen(Qt::black, 2);
painter.setPen(pen);
QBrush brush(Qt::black);
bool widthBased = rect().width() > rect().height();
int cellSize = widthBased ?
rect().height() / height :
rect().width() / width;
int dotSize = cellSize * 0.5;
int filledDotSize = cellSize * 0.7;
int areaWidth = cellSize * width;
int areaHeight = cellSize * height;
int offsetX = (rect().width() - areaWidth) / 2;
int offsetY = (rect().height() - areaHeight) / 2;
QRect drawArea(offsetX, offsetY, areaWidth, areaHeight);
// Draw main grid
painter.drawRect(drawArea);
QRect cell(0, 0, cellSize, cellSize);
painter.setBrush(brush);
for (int cellX = 0; cellX < width; cellX++)
{
for (int cellY = 0; cellY < height; cellY++)
{
cell.setLeft(offsetX + (cellSize - dotSize) / 2 + cellX * cellSize);
cell.setWidth(dotSize);
cell.setTop(offsetY + (cellSize - dotSize) / 2 + cellY * cellSize);
cell.setHeight(dotSize);
painter.drawEllipse(cell);
}
}
// Draw line points
for (auto iter = lines.begin(); iter < lines.end(); iter++)
{
QColor color(colorFromString(iter->getColor()));
brush.setColor(color);
painter.setBrush(brush);
// Draw start
cell.setLeft(offsetX + (cellSize - filledDotSize) / 2 + (iter->getStartX() - 1) * cellSize);
cell.setWidth(filledDotSize);
cell.setTop(offsetY + (cellSize - filledDotSize) / 2 + (iter->getStartY() - 1) * cellSize);
cell.setHeight(filledDotSize);
painter.drawEllipse(cell);
// Draw end
cell.setLeft(offsetX + (cellSize - filledDotSize) / 2 + (iter->getEndX() - 1) * cellSize);
cell.setWidth(filledDotSize);
cell.setTop(offsetY + (cellSize - filledDotSize) / 2 + (iter->getEndY() - 1) * cellSize);
cell.setHeight(filledDotSize);
painter.drawEllipse(cell);
}
}
QColor GridPreview::colorFromString(QString color)
{
if (!colorMap.contains(color))
return colorMap[QString("red")];
return colorMap[color];
}