ipeqt::Canvas Class Reference
[Ipe Qt canvas]

A Qt widget that displays an Ipe document page. More...

#include <ipeqtcanvas.h>

List of all members.

Classes

Signals

Public Member Functions

Protected Member Functions

Protected Attributes


Detailed Description

A Qt widget that displays an Ipe document page.


Constructor & Destructor Documentation

Canvas::Canvas ( QWidget *  parent,
Qt::WFlags  f = 0 
)

Construct a new canvas.

Canvas::~Canvas (  ) 

destructor.


Member Function Documentation

void Canvas::setPage ( const Page page,
int  pno,
int  view,
const Cascade sheet 
)

Set the page to be displayed.

Doesn't take ownership of any argument. The page number pno is only needed if page numbering is turned on.

void Canvas::setFontPool ( const FontPool *  fontPool  ) 

set information about Latex fonts (from ipe::Document)

Vector ipeqt::Canvas::pan (  )  const [inline]

Return current pan.

double ipeqt::Canvas::zoom (  )  const [inline]

Return current zoom.

const Cascade* ipeqt::Canvas::cascade (  )  const [inline]

Return current style sheet cascade.

Vector ipeqt::Canvas::center (  )  const [inline]

Return center of canvas.

Vector ipeqt::Canvas::pos (  )  const [inline]

Return last mouse position (snapped!) in user coordinates.

Vector ipeqt::Canvas::unsnappedPos (  )  const [inline]

Return last unsnapped mouse position in user coordinates.

Vector ipeqt::Canvas::globalPos (  )  const [inline]

Return global mouse position of last mouse press/release.

Vector Canvas::simpleSnapPos (  )  const

Return snapped mouse position without angular snapping.

const Snap& ipeqt::Canvas::snap (  )  const [inline]

Return current snapping information.

int ipeqt::Canvas::additionalModifiers (  )  const [inline]

Return current additional modifiers.

void Canvas::setAdditionalModifiers ( int  mod  ) 

Set additional modifiers.

These modifier bits are passed to the Tool when a key is pressed or a drawing action is performed in addition to the actual keyboard modifiers.

Vector Canvas::devToUser ( const Vector arg  )  const

Convert canvas (device) coordinates to user coordinates.

Vector Canvas::userToDev ( const Vector arg  )  const

Convert user coordinates to canvas (device) coordinates.

void Canvas::setCanvasStyle ( const Style style  ) 

Set style of canvas drawing.

Includes paper color, pretty text, and grid.

Style ipeqt::Canvas::canvasStyle (  )  const [inline]

Return canvas style.

void Canvas::setPan ( const Vector v  ) 

Set current pan position.

The pan position is the user coordinate that is displayed at the very center of the canvas.

void Canvas::setZoom ( double  zoom  ) 

Set current zoom factor.

The zoom factor maps user coordinates to screen pixel coordinates.

void Canvas::setSnap ( const Snap s  ) 

Set the snapping information.

void Canvas::setDimmed ( bool  dimmed  ) 

Dim whole canvas, except for the Tool.

This mode will be reset when the Tool finishes.

void Canvas::setAutoOrigin ( const Vector v  ) 

Enable automatic angular snapping with this origin.

Matrix Canvas::canvasTfm (  )  const

Matrix mapping user coordinates to canvas coordinates.

void Canvas::computeFifi ( double  x,
double  y 
)

Stores the mouse position in iUnsnappedMousePos, computes Fifi if snapping is enabled, and stores snapped position in iMousePos.

void Canvas::setFifiVisible ( bool  visible  ) 

Set whether Fifi should be shown.

Fifi will only be shown if a snapping mode is active.

void Canvas::update (  ) 

Mark for update with redrawing of objects.

void Canvas::updateTool (  ) 

Mark for update with redrawing of tool only.

void Canvas::setTool ( Tool tool  ) 

Set a new tool.

Emits toolChanged() signal.

void Canvas::finishTool (  ) 
void ipeqt::Canvas::wheelMoved ( int  degrees  )  [signal]
void ipeqt::Canvas::mouseAction ( int  button  )  [signal]
void ipeqt::Canvas::positionChanged (  )  [signal]
void ipeqt::Canvas::toolChanged ( bool  hasTool  )  [signal]
void Canvas::paintEvent ( QPaintEvent *  ev  )  [protected, virtual]
void Canvas::mousePressEvent ( QMouseEvent *  ev  )  [protected, virtual]
void Canvas::mouseReleaseEvent ( QMouseEvent *  ev  )  [protected, virtual]
void Canvas::mouseMoveEvent ( QMouseEvent *  ev  )  [protected, virtual]
void Canvas::tabletEvent ( QTabletEvent *  ev  )  [protected, virtual]
void Canvas::wheelEvent ( QWheelEvent *  ev  )  [protected, virtual]
void Canvas::keyPressEvent ( QKeyEvent *  ev  )  [protected, virtual]
QSize Canvas::sizeHint (  )  const [protected, virtual]
void Canvas::drawPaper ( cairo_t *  cc  )  [protected]
void Canvas::drawFrame ( cairo_t *  cc  )  [protected]
void Canvas::drawAxes ( cairo_t *  cc  )  [protected]
void Canvas::drawGrid ( cairo_t *  cc  )  [protected]
void Canvas::drawObjects ( cairo_t *  cc  )  [protected]
void Canvas::drawTool ( Painter painter  )  [protected]

Draw the current canvas tool.

If no tool is set, it draws the selected objects.

bool Canvas::snapToPaperAndFrame (  )  [protected]

Member Data Documentation

Tool* ipeqt::Canvas::iTool [protected]
const Page* ipeqt::Canvas::iPage [protected]
int ipeqt::Canvas::iPageNumber [protected]
int ipeqt::Canvas::iView [protected]
const Cascade* ipeqt::Canvas::iCascade [protected]
double ipeqt::Canvas::iZoom [protected]
bool ipeqt::Canvas::iDimmed [protected]
bool ipeqt::Canvas::iAutoSnap [protected]
int ipeqt::Canvas::iWidth [protected]
int ipeqt::Canvas::iHeight [protected]
cairo_surface_t* ipeqt::Canvas::iSurface [protected]
bool ipeqt::Canvas::iFifiVisible [protected]

The documentation for this class was generated from the following files: