# Updated by mvl on 2009-02-22 for PyObjC 2
import objc
from PyObjCTools import AppHelper
from AppKit import *
from Foundation import *
class DraggableItemView(NSView):
"""."""
_locationDefault = NSMakePoint(0.0, 0.0)
_itemColorDefault = NSColor.redColor()
_backgroundColorDefault = NSColor.whiteColor()
def awakeFromNib(self):
self.dragging = None
def initWithFrame_(self, frame):
"""."""
result = super(DraggableItemView, self).initWithFrame_(frame)
if result is not None:
result._location = self._locationDefault
result._itemColor = self._itemColorDefault
result._backgroundColor = self._backgroundColorDefault
return result
def drawRect_(self, rect):
"""."""
NSColor.whiteColor().set()
NSBezierPath.fillRect_(rect)
self.itemColor().set()
NSBezierPath.fillRect_(self.calculatedItemBounds())
def isOpaque(self):
"""."""
return (self.backgroundColor().alphaComponent() >= 1.0)
def offsetLocationByX_andY_(self, x, y):
"""."""
self.setNeedsDisplayInRect_(self.calculatedItemBounds())
if self.isFlipped():
invertDeltaY = -1
else:
invertDeltaY = 1
self.location().x = self.location().x + x
self.location().y = self.location().y + y * invertDeltaY
self.setNeedsDisplayInRect_(self.calculatedItemBounds())
def mouseDown_(self, event):
"""."""
clickLocation = self.convertPoint_fromView_(event.locationInWindow(),
None)
itemHit = self.isPointInItem_(clickLocation)
if itemHit:
self.dragging = True
self.lastDragLocation = clickLocation
NSCursor.closedHandCursor().push()
def mouseDragged_(self, event):
"""."""
if self.dragging:
newDragLocation = self.convertPoint_fromView_(
event.locationInWindow(),
None
)
self.offsetLocationByX_andY_(
newDragLocation.x - self.lastDragLocation.x,
newDragLocation.y - self.lastDragLocation.y
)
self.lastDragLocation = newDragLocation
self.autoscroll_(event)
def mouseUp_(self, event):
"""."""
self.dragging = False
# NSCursor has both an instance and a class method w/ the name 'pop'
NSCursor.pyobjc_classMethods.pop()
self.window().invalidateCursorRectsForView_(self)
def acceptsFirstResponder(self):
"""."""
return True
def keyDown_(self, event):
"""."""
handled = False
characters = event.charactersIgnoringModifiers()
if characters.isEqual_('r'):
handled = True
self.setItemPropertiesToDefault_(self)
if handled is False:
super(DraggableItemView, self).keyDown_(event)
@objc.IBAction
def changeColor_(self, sender):
"""."""
self.setItemColor_(sender.color())
def resetCursorRects(self):
"""."""
self.discardCursorRects()
self.addCursorRect_cursor_(self.calculatedItemBounds(),
NSCursor.openHandCursor())
@objc.IBAction
def moveUp_(self, sender):
"""."""
self.offsetLocationByX_andY_(0.0, 10.0)
self.window().invalidateCursorRectsForView_(self)
@objc.IBAction
def moveDown_(self, sender):
"""."""
self.offsetLocationByX_andY_(0.0, -10.0)
self.window().invalidateCursorRectsForView_(self)
@objc.IBAction
def moveLeft_(self, sender):
"""."""
self.offsetLocationByX_andY_(-10.0, 0.0)
self.window().invalidateCursorRectsForView_(self)
@objc.IBAction
def moveRight_(self, sender):
"""."""
self.offsetLocationByX_andY_(10.0, 0.0)
self.window().invalidateCursorRectsForView_(self)
@objc.IBAction
def setItemPropertiesToDefault_(self, sender):
"""."""
self.setLocation_(self._locationDefault)
self.setItemColor_(self._itemColorDefault)
self.setBackgroundColor_(self._backgroundColorDefault)
def setLocation_(self, point):
"""."""
if not NSEqualPoints(point, self.location()):
self.setNeedsDisplayInRect_(self.calculatedItemBounds())
self._location = point
self.setNeedsDisplayInRect_(self.calculatedItemBounds())
self.window().invalidateCursorRectsForView_(self)
def location(self):
"""."""
return self._location
def setBackgroundColor_(self, aColor):
"""."""
if not self.backgroundColor().isEqual_(aColor):
self._backgroundColor = aColor
self.setNeedsDisplayInRect_(self.calculatedItemBounds())
def backgroundColor(self):
"""."""
return self._backgroundColor
def setItemColor_(self, aColor):
"""."""
if not self.itemColor().isEqual_(aColor):
self._itemColor = aColor
self.setNeedsDisplayInRect_(self.calculatedItemBounds())
def itemColor(self):
"""."""
return self._itemColor
def calculatedItemBounds(self):
"""."""
return NSMakeRect(self.location().x, self.location().y,
60.0, 20.0)
def isPointInItem_(self, testPoint):
"""."""
itemHit = NSPointInRect(testPoint, self.calculatedItemBounds())
if itemHit:
pass
return itemHit
if __name__ == "__main__":
AppHelper.runEventLoop()
|