shareboardcanvas.cpp

   1 #include "shareboardcanvas.h"
   2 #include <QMouseEvent>
   3 #include <QPaintEvent>
   4 #include <QPainter>
   5 #include <QPixmap>
   6 #include <QDebug>
   7
   8 ShareboardCanvas::ShareboardCanvas(QWidget* parent) : QWidget(parent) {
   9         setMinimumSize(640,480);
  10         setMouseTracking(true);
  11         currentScene = new QPixmap(size());
  12         currentScene->fill();
  13         mouseDown = false;
  14 }
  15
  16 ShareboardCanvas::~ShareboardCanvas() {
  17         if (currentScene)
  18                 delete currentScene;
  19 }
  20
  21 void ShareboardCanvas::mouseMoveEvent(QMouseEvent* event) {
  22         // Send mouse move event to network thread
  23         // If the button is down
  24         if(mouseDown)
  25                 dragPath.append(event->posF());
  26         // Trigger a repaint
  27         update();
  28 }
  29
  30 void ShareboardCanvas::mousePressEvent(QMouseEvent* event) {
  31         mouseDown = true;
  32         dragPath.append(event->posF()); // We're starting a new drag path
  33         //
  34 }
  35
  36 void ShareboardCanvas::mouseReleaseEvent(QMouseEvent* event) {
  37         mouseDown = false;
  38         qDebug() << dragPath.size() << "mouse move events counted this drag";
  39         // Depending on the tool, we now dispatch different types of events
  40         dragPath.clear(); // Clear the path; we're no longer tracking a drag
  41 }
  42
  43 void ShareboardCanvas::paintEvent(QPaintEvent* event) {
  44         QPainter p(this);
  45         // Paint the background from the saved state
  46         p.drawPixmap(0, 0, *currentScene);
  47         // Now paint our local changes on top of it
  48         //p.set
  49         // Now paint the set of mouse cursors on top of that
  50 }