2ndbeam/lines-grid-editor
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Changed ints to QPoint and basic line creation

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This commit is contained in:
Alexey 2025-06-27 18:29:22 +03:00
commit 4ae8031e88
4 changed files with 58 additions and 43 deletions
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47
gridpreview.cpp
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@ -41,17 +41,17 @@ void GridPreview::setLineColor(int index, QString color)
emit updatedContents();
}
void GridPreview::setLineStartPoint(int index, int x, int y)
void GridPreview::setLineStartPoint(int index, QPoint point)
{
lines[index].setStartPoint(x, y);
lines[index].setStartPoint(point);
update();
emit updatedContents();
}
void GridPreview::setLineEndPoint(int index, int x, int y)
void GridPreview::setLineEndPoint(int index, QPoint point)
{
lines[index].setEndPoint(x, y);
lines[index].setEndPoint(point);
update();
emit updatedContents();
@ -136,16 +136,16 @@ void GridPreview::paintEvent(QPaintEvent *)
painter.setBrush(brush);
// Draw start
cell.setLeft(offsetX + (cellSize - filledDotSize) / 2 + (iter->getStartX() - 1) * cellSize);
cell.setLeft(offsetX + (cellSize - filledDotSize) / 2 + (iter->getStart().x() - 1) * cellSize);
cell.setWidth(filledDotSize);
cell.setTop(offsetY + (cellSize - filledDotSize) / 2 + (iter->getStartY() - 1) * cellSize);
cell.setTop(offsetY + (cellSize - filledDotSize) / 2 + (iter->getStart().y() - 1) * cellSize);
cell.setHeight(filledDotSize);
painter.drawEllipse(cell);
// Draw end
cell.setLeft(offsetX + (cellSize - filledDotSize) / 2 + (iter->getEndX() - 1) * cellSize);
cell.setLeft(offsetX + (cellSize - filledDotSize) / 2 + (iter->getEnd().x() - 1) * cellSize);
cell.setWidth(filledDotSize);
cell.setTop(offsetY + (cellSize - filledDotSize) / 2 + (iter->getEndY() - 1) * cellSize);
cell.setTop(offsetY + (cellSize - filledDotSize) / 2 + (iter->getEnd().y() - 1) * cellSize);
cell.setHeight(filledDotSize);
painter.drawEllipse(cell);
}
@ -172,6 +172,14 @@ void GridPreview::mousePressEvent(QMouseEvent *event)
QPoint gridPos = localMousePosition(event);
std::cout << gridPos.x() << ',' << gridPos.y() << std::endl;
if (!isPointOccupied(gridPos) && pointInBounds(gridPos))
{
Line line;
line.setStartPoint(gridPos);
line.setEndPoint(gridPos);
addLine(line);
}
}
void GridPreview::mouseReleaseEvent(QMouseEvent *event)
@ -182,10 +190,10 @@ void GridPreview::mouseReleaseEvent(QMouseEvent *event)
const QPoint GridPreview::localMousePosition(QMouseEvent *event)
{
QPoint position(event->position().toPoint());
return snapToGrid(position.x(), position.y());
return snapToGrid(position);
}
const QPoint GridPreview::snapToGrid(int x, int y)
const QPoint GridPreview::snapToGrid(const QPoint &global)
{
double aspectRatio = (double) rect().width() / rect().height();
double cellAspectRatio = (double) width / height;
@ -200,5 +208,22 @@ const QPoint GridPreview::snapToGrid(int x, int y)
int offsetX = (rect().width() - areaWidth) / 2;
int offsetY = (rect().height() - areaHeight) / 2;
return QPoint(1 + (x - offsetX) / cellSize, 1 + (y - offsetY) / cellSize);
return QPoint(1 + (global.x() - offsetX) / cellSize, 1 + (global.y() - offsetY) / cellSize);
}
double GridPreview::isPointOccupied(const QPoint &point)
{
for (auto iter = lines.begin(); iter < lines.end(); iter++)
{
if (iter->getStart() == point || iter->getEnd() == point)
{
return true;
}
}
return false;
}
double GridPreview::pointInBounds(const QPoint &point)
{
return point.x() > 0 && point.y() > 0 && point.x() <= width && point.y() <= height;
}