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import pygtk
pygtk.require( '2.0' )
import gtk
import Config
import Jam.Block as Block
class Desktop( gtk.EventBox ):
def __init__( self, owner ):
gtk.EventBox.__init__( self )
self.owner = owner
self.drawingArea = gtk.DrawingArea()
self.add( self.drawingArea )
win = gtk.gdk.get_default_root_window()
self.gc = gtk.gdk.GC( win )
colormap = self.drawingArea.get_colormap()
self.colors = { "bg": colormap.alloc_color( Config.BG_COLOR, True, True ), \
"tempWhite": colormap.alloc_color( "#FFFFFF", True, True ), \
"tempBlock1": colormap.alloc_color( "#227733", True, True ), \
"tempBlock2": colormap.alloc_color( "#837399", True, True ), \
"tempBlock3": colormap.alloc_color( "#111177", True, True ), \
"tempBlock4": colormap.alloc_color( "#99AA22", True, True ), \
"tempBlock5": colormap.alloc_color( "#449977", True, True ) }
self.dirtyRectToAdd = gtk.gdk.Rectangle() # used by the invalidate_rect function
self.screenBuf = None
self.screenBufDirty = False
self.screenBufDirtyRect = gtk.gdk.Rectangle()
self.blocks = [] # items on the desktop
# TEMP
self.addBlock( Block.Instrument, [], ( 100, 100 ) )
self.add_events(gtk.gdk.POINTER_MOTION_MASK|gtk.gdk.POINTER_MOTION_HINT_MASK)
self.connect( "size-allocate", self.size_allocate )
self.connect( "button-press-event", self.button_press )
self.connect( "button-release-event", self.button_release )
self.connect( "motion-notify-event", self.motion_notify )
self.drawingArea.connect( "expose-event", self.expose )
self.clickedBlock = None
self.possibleParent = None
self.dragging = False
self.possibleDelete = False
def size_allocate( self, widget, allocation ):
if self.screenBuf == None or self.alloc.width != allocation.width or self.alloc.height != allocation.height:
win = gtk.gdk.get_default_root_window()
self.screenBuf = gtk.gdk.Pixmap( win, allocation.width, allocation.height )
self.invalidate_rect( 0, 0, allocation.width, allocation.height )
self.alloc = allocation
self.absoluteLoc = [0,0]
parent = self.get_parent()
while parent:
alloc = parent.get_allocation()
self.absoluteLoc[0] += alloc.x
self.absoluteLoc[1] += alloc.y
parent = parent.get_parent()
return False
#==========================================================
# Blocks
def addBlock( self, blockClass, blockData, loc = (-1,-1), drag = False ):
block = blockClass( self, self.gc )
if loc[0] != -1: x = loc[0]
else: x = self.alloc.width//2 - blockClass.WIDTH_DIV2
if loc[1] != -1: y = loc[1]
elif drag: y = self.alloc.height - blockClass.HEIGHT
else: y = self.alloc.height//2 - blockClass.HEIGHT_DIV2
if drag:
win = gtk.gdk.get_default_root_window()
display = win.get_display()
screen = display.get_default_screen()
display.warp_pointer( screen, self.absoluteLoc[0] + x + blockClass.WIDTH_DIV2, self.absoluteLoc[1] + y + blockClass.HEIGHT_DIV2 )
self._beginDrag( block )
block.setLoc( x, y )
else:
self.blocks.append( block )
block.setLoc( x, y )
#==========================================================
# Mouse
def button_press( self, widget, event ):
hit = False
for i in range(len(self.blocks)-1, -1, -1):
hit = self.blocks[i].button_press( event )
if hit:
self.clickedBlock = hit
break
def button_release( self, widget, event ):
if self.possibleDelete:
self.possibleDelete = False
self.clickedBlock.destroy()
self.clickedBlock = None
self.possibleParent = None
self.dragging = False
if self.dragging:
self.dragging = False
if self.possibleParent:
self.possibleParent.invalidate_rect( False )
self.possibleParent.addChild( self.clickedBlock )
root = self.possibleParent.getRoot()
self.blocks.remove(root)
self.blocks.append(root)
self.possibleParent = None
else:
self.blocks.append( self.clickedBlock )
if self.clickedBlock:
self.clickedBlock.button_release( event )
self.clickedBlock = None
def motion_notify( self, widget, event ):
if not self.clickedBlock:
return
if event.is_hint or widget != self:
x, y, state = self.window.get_pointer()
event.x = float(x)
event.y = float(y)
event.state = state
self.dragging = True
if self.clickedBlock.motion_notify( event ): # first drag of root block, remove from self.blocks
self.blocks.remove( self.clickedBlock )
if event.y < 0 or event.y > self.alloc.height:
self.possibleDelete = True
return
else:
self.possibleDelete = False
if self.clickedBlock.canChild and len(self.blocks):
for i in range(len(self.blocks)-1, -1, -1):
handled = self.blocks[i].testChild( self.clickedBlock.getLoc() )
if handled:
if self.possibleParent != handled:
if self.possibleParent:
self.possibleParent.invalidate_rect( False )
self.possibleParent = handled
self.possibleParent.invalidate_rect( False )
break
if not handled and self.possibleParent:
self.possibleParent.invalidate_rect( False )
self.possibleParent = None
def _beginDrag( self, block ):
block._beginDrag()
self.clickedBlock = block
self.dragging = True
#==========================================================
# Drawing
def draw( self ):
startX = self.screenBufDirtyRect.x
startY = self.screenBufDirtyRect.y
stopX = startX + self.screenBufDirtyRect.width
stopY = startY + self.screenBufDirtyRect.height
self.gc.set_clip_rectangle( self.screenBufDirtyRect )
# draw background
self.gc.foreground = self.colors["bg"]
self.screenBuf.draw_rectangle( self.gc, True, startX, startY, self.screenBufDirtyRect.width, self.screenBufDirtyRect.height )
# draw blocks
for block in self.blocks:
block.draw( startX, startY, stopX, stopY, self.screenBuf )
self.screenBufDirty = False
def expose( self, DA, event ):
if self.screenBufDirty:
self.draw()
self.drawingAreaDirty = False
startX = event.area.x
startY = event.area.y
stopX = event.area.x + event.area.width
stopY = event.area.y + event.area.height
self.gc.set_clip_rectangle( event.area )
# draw base
DA.window.draw_drawable( self.gc, self.screenBuf, startX, startY, startX, startY, event.area.width, event.area.height )
if self.possibleDelete:
return
# draw possible parent
if self.possibleParent:
self.possibleParent.drawHighlight( startX, startY, stopX, stopY, DA.window )
# draw dragged objects
if self.dragging:
self.clickedBlock.draw( startX, startY, stopX, stopY, DA.window )
def invalidate_rect( self, x, y, width, height, base = True ):
self.dirtyRectToAdd.x = x
self.dirtyRectToAdd.y = y
self.dirtyRectToAdd.width = width
self.dirtyRectToAdd.height = height
#print "dirty %d %d %d %d %d %d" % (x, y, width, height, x+width, y+height)
if base: # the base image has been dirtied
if not self.screenBufDirty:
self.screenBufDirtyRect.x = x
self.screenBufDirtyRect.y = y
self.screenBufDirtyRect.width = width
self.screenBufDirtyRect.height = height
else:
self.screenBufDirtyRect = self.screenBufDirtyRect.union( self.dirtyRectToAdd )
self.screenBufDirty = True
if self.drawingArea.window != None:
self.drawingArea.window.invalidate_rect( self.dirtyRectToAdd, True )
self.drawingAreaDirty = True
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