CircuitView

src/ui/circuitview.h

This is where the schematic is drawn.

Note

Zooming does not behave as intended. What is intended is that when you scroll your mouse wheel, the scene should scale around the point where your cursor is. Instead, the current implementation scales with the center of the view as the pivot. We are working on a fix for this. We might even ditch the QGraphicsView and use a lower-level framework.

class Ohmcha::CircuitView : public QGraphicsView

Public Types

enum Mode

Values:

enumerator Idle

enumerator InsertDragDrop

enumerator InsertPoints

Public Functions

CircuitView(QWidget *parent = nullptr)

CircuitView(QWidget *parent, Schematic *schematic)

~CircuitView()

void initialize()

void initiateInsertComponent(GraphicComponent *component, Mode insertMode)

void solve()

void showValues(bool show = true)

void load(Schematic *schematic)

void zoomIn(float scale = 1.2)

void resetZoom()

CircuitViewScene *scene()

void setGridVisibility(bool visibility)

Show/hide the grid.

void setSnap(bool state)

Enable/disable snap to grid.

void setComponentPreview(ComponentPreview *componentPreview)

void setZoomLevel(float zoom)

QPointF getCursorPosition()

Return the cursor position with any snap-to-grid applied.

ComponentPreview *getComponentPreview()

Schematic *getSchematic()

Return the Schematic representation of this circuit. The result is guaranteed to be non-null.

float getZoomLevel() const

Signals

void componentSelected(GraphicComponent*)

Emitted when a component is selected individually.

void itemDeleted(GraphicComponent*)

Private Functions

void wheelEvent(QWheelEvent *event) override

void mousePressEvent(QMouseEvent *event) override

void mouseReleaseEvent(QMouseEvent *event) override

void mouseMoveEvent(QMouseEvent *event) override

void keyPressEvent(QKeyEvent *event) override

void resizeEvent(QResizeEvent *event) override

void updateCursorGuides()

Update cursor guides’ position based on the current cursor position.

void snapToGrid()

Change the internally tracked cursor position to make it snap to grid.

Private Members

float zoomLevel = 1

QGraphicsLineItem *hGuide = {}

QGraphicsLineItem *vGuide = {}

GraphicComponent *pendingInsert = {}

ComponentPreview *componentPreview = {}

Schematic *schematic = {}

QList<QGraphicsItem*> results

Mode mode = Idle

QPointF rawCursorPos

QPointF cursorPos

float gridSpacingX = 20

float gridSpacingY = 20

bool snapOn = false

bool showGrid = true

bool _selectionModeDetermined = false

QPointF _dragPos

bool _dragging = false

Friends

friend class CircuitViewScene