def onDragStart(self, event):
dt = event.dataTransfer
target = DOM.eventGetTarget(event)
target = Widget(Element=target)
id = target.getID()
dt.setData("Text", "Dropped %s" % target.getID())
dt.effectAllowed = 'copy'
if id == 'imgdrag1':
parent = self.getParent()
while not hasattr(parent, 'h2'):
parent = parent.getParent()
dt.setDragImage(parent.h2.getElement(), 10, 10)
elif id == 'imgdrag2':
dt.setDragImage(doc().getElementById('logo'), 10, 10)
elif id == 'imgdrag3':
# OK, it's a bit of a cheat, but the following works on current
# Opera, IE, Firefox, Safari, Chrome.
ctx = GWTCanvas(50, 50)
self.makeCanvasImg(ctx)
try:
img = DOM.createImg()
DOM.setAttribute(img, 'src', ctx.canvas.toDataURL())
dt.setDragImage(img, 25, 25)
except:
dt.setDragImage(ctx.canvas, 25, 25)
def InitialiseScreen(self):
hpanel = HorizontalPanel()
self.add(hpanel)
vpanelMenu = VerticalPanel()
hpanel.add(vpanelMenu)
self.addbutton = Button("Add Triangle")
vpanelMenu.add(self.addbutton)
self.addbutton.addClickListener(getattr(self, "addtriangle"))
self.canvas = GWTCanvas(self.CANVAS_WIDTH, self.CANVAS_HEIGHT)
vpanelCanvas = VerticalPanel()
self.canvas.setWidth(self.CANVAS_WIDTH)
self.canvas.setHeight(self.CANVAS_HEIGHT)
hpanel.add(vpanelCanvas)
vpanelCanvas.add(self.canvas)
self.canvas.addMouseListener(self)
self.selecteditem = None
self.selectedhandle = None
self.mouseisdown = False
dc = DocumentCollection.documentcollection
DocumentCollection.documentcollection.edgelistener = self.EdgeListener
if len(dc.documentsbyclass[model.Drawing.__name__]) == 0:
drawing = model.Drawing(None)
dc.AddDocumentObject(drawing)
EdgePoster([a.asDict() for a in drawing.history.GetAllEdges()])
else:
for k, v in dc.documentsbyclass[
model.Drawing.__name__].iteritems():
drawing = v
self.drawingid = drawing.id
self.Draw()
def onModuleLoad(self):
self.layout = HorizontalPanel()
# Each demo will set their own dimensions, so it doesn't matter
# what we initialize the canvas to.
canvas = GWTCanvas(400,400)
canvas.addStyleName("gwt-canvas")
self.demos = []
# Create demos
self.demos.append(StaticDemo(canvas))
self.demos.append(LogoDemo(canvas))
self.demos.append(ParticleDemo(canvas))
self.demos.append(GradientDemo(canvas))
self.demos.append(SuiteDemo(canvas))
# Add them to the selection list box
lb = ListBox()
lb.setStyleName("listBox")
for i in range(len(self.demos)):
lb.addItem(self.demos[i].getName())
lb.addChangeListener(self)
# start off with the first demo
self.currentDemo = self.demos[0]
# Add widgets to self.layout and RootPanel
vp = VerticalPanel()
vp.add(lb)
vp.add(canvas)
self.layout.add(vp)
if self.currentDemo.getControls() is not None:
self.layout.add(self.currentDemo.getControls())
RootPanel().add(self.layout)
self.currentDemo.drawDemo()
def create(self):
return GWTCanvas()
def __init__(self):
HorizontalPanel.__init__(self)
self.context = GWTCanvas(300,300,300,300)
self.context.addStyleName("gwt-canvas")
self.add(self.context)
def _get_canvas(self):
return GWTCanvas(400, 400)
