Updated FloatCanvas code from Chris
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@45725 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
347
wxPython/wx/lib/floatcanvas/GUIMode.py
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347
wxPython/wx/lib/floatcanvas/GUIMode.py
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"""
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Module that holds the GUI modes used by FloatCanvas
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Note that this can only be imported after a wx.App() has been created.
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This approach was inpired by Christian Blouin, who also wrote the initial
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version of the code.
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"""
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import wx
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## fixme: events should live in their own module, so all of FloatCanvas
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## wouldn't have to be imported here.
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import FloatCanvas, Resources
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import numpy as N
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## create all the Cursors, so they don't need to be created each time.
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if "wxMac" in wx.PlatformInfo: # use 16X16 cursors for wxMac
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HandCursor = wx.CursorFromImage(Resources.getHand16Image())
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GrabHandCursor = wx.CursorFromImage(Resources.getGrabHand16Image())
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img = Resources.getMagPlus16Image()
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 6)
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 6)
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MagPlusCursor = wx.CursorFromImage(img)
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img = Resources.getMagMinus16Image()
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 6)
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 6)
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MagMinusCursor = wx.CursorFromImage(img)
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else: # use 24X24 cursors for GTK and Windows
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HandCursor = wx.CursorFromImage(Resources.getHandImage())
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GrabHandCursor = wx.CursorFromImage(Resources.getGrabHandImage())
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img = Resources.getMagPlusImage()
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 9)
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 9)
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MagPlusCursor = wx.CursorFromImage(img)
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img = Resources.getMagMinusImage()
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 9)
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img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 9)
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MagMinusCursor = wx.CursorFromImage(img)
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class GUIBase:
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"""
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Basic Mouse mode and baseclass for other GUImode.
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This one does nothing with any event
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"""
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def __init__(self, parent):
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self.parent = parent
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Cursor = wx.NullCursor
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# Handlers
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def OnLeftDown(self, event):
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pass
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def OnLeftUp(self, event):
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pass
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def OnLeftDouble(self, event):
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pass
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def OnRightDown(self, event):
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pass
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def OnRightUp(self, event):
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pass
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def OnRightDouble(self, event):
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pass
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def OnMiddleDown(self, event):
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pass
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def OnMiddleUp(self, event):
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pass
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def OnMiddleDouble(self, event):
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pass
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def OnWheel(self, event):
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pass
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def OnMove(self, event):
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pass
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def UpdateScreen(self):
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"""
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Update gets called if the screen has been repainted in the middle of a zoom in
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so the Rubber Band Box can get updated
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"""
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pass
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class GUIMouse(GUIBase):
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"""
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Mouse mode checks for a hit test, and if nothing is hit,
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raises a FloatCanvas mouse event for each event.
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"""
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Cursor = wx.NullCursor
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# Handlers
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def OnLeftDown(self, event):
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EventType = FloatCanvas.EVT_FC_LEFT_DOWN
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnLeftUp(self, event):
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EventType = FloatCanvas.EVT_FC_LEFT_UP
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnLeftDouble(self, event):
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EventType = FloatCanvas.EVT_FC_LEFT_DCLICK
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnMiddleDown(self, event):
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EventType = FloatCanvas.EVT_FC_MIDDLE_DOWN
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnMiddleUp(self, event):
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EventType = FloatCanvas.EVT_FC_MIDDLE_UP
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnMiddleDouble(self, event):
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EventType = FloatCanvas.EVT_FC_MIDDLE_DCLICK
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnRightDown(self, event):
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EventType = FloatCanvas.EVT_FC_RIGHT_DOWN
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnRightUp(self, event):
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EventType = FloatCanvas.EVT_FC_RIGHT_UP
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnRightDouble(self, event):
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EventType = FloatCanvas.EVT_FC_RIGHT_DCLICK
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if not self.parent.HitTest(event, EventType):
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self.parent._RaiseMouseEvent(event, EventType)
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def OnWheel(self, event):
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EventType = FloatCanvas.EVT_FC_MOUSEWHEEL
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self.parent._RaiseMouseEvent(event, EventType)
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def OnMove(self, event):
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## The Move event always gets raised, even if there is a hit-test
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self.parent.MouseOverTest(event)
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self.parent._RaiseMouseEvent(event,FloatCanvas.EVT_FC_MOTION)
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class GUIMove(GUIBase):
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Cursor = HandCursor
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GrabCursor = GrabHandCursor
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def __init__(self, parent):
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GUIBase.__init__(self, parent)
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self.StartMove = None
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self.PrevMoveXY = None
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def OnLeftDown(self, event):
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self.parent.SetCursor(self.GrabCursor)
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self.parent.CaptureMouse()
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self.StartMove = N.array( event.GetPosition() )
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self.PrevMoveXY = (0,0)
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def OnLeftUp(self, event):
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if self.StartMove is not None:
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StartMove = self.StartMove
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EndMove = N.array(event.GetPosition())
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DiffMove = StartMove-EndMove
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if N.sum(DiffMove**2) > 16:
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self.parent.MoveImage(DiffMove, 'Pixel')
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self.StartMove = None
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self.parent.SetCursor(self.Cursor)
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def OnMove(self, event):
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# Allways raise the Move event.
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self.parent._RaiseMouseEvent(event,FloatCanvas.EVT_FC_MOTION)
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if event.Dragging() and event.LeftIsDown() and not self.StartMove is None:
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xy1 = N.array( event.GetPosition() )
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wh = self.parent.PanelSize
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xy_tl = xy1 - self.StartMove
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dc = wx.ClientDC(self.parent)
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dc.BeginDrawing()
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x1,y1 = self.PrevMoveXY
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x2,y2 = xy_tl
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w,h = self.parent.PanelSize
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##fixme: This sure could be cleaner!
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if x2 > x1 and y2 > y1:
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xa = xb = x1
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ya = yb = y1
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wa = w
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ha = y2 - y1
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wb = x2- x1
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hb = h
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elif x2 > x1 and y2 <= y1:
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xa = x1
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ya = y1
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wa = x2 - x1
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ha = h
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xb = x1
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yb = y2 + h
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wb = w
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hb = y1 - y2
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elif x2 <= x1 and y2 > y1:
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xa = x1
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ya = y1
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wa = w
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ha = y2 - y1
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xb = x2 + w
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yb = y1
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wb = x1 - x2
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hb = h - y2 + y1
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elif x2 <= x1 and y2 <= y1:
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xa = x2 + w
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ya = y1
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wa = x1 - x2
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ha = h
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xb = x1
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yb = y2 + h
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wb = w
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hb = y1 - y2
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dc.SetPen(wx.TRANSPARENT_PEN)
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dc.SetBrush(self.parent.BackgroundBrush)
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dc.DrawRectangle(xa, ya, wa, ha)
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dc.DrawRectangle(xb, yb, wb, hb)
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self.PrevMoveXY = xy_tl
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if self.parent._ForeDrawList:
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dc.DrawBitmapPoint(self.parent._ForegroundBuffer,xy_tl)
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else:
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dc.DrawBitmapPoint(self.parent._Buffer,xy_tl)
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dc.EndDrawing()
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def OnWheel(self, event):
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"""
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By default, zoom in/out by a 0.1 factor per Wheel event.
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"""
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if event.GetWheelRotation() < 0:
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self.parent.Zoom(0.9)
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else:
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self.parent.Zoom(1.1)
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class GUIZoomIn(GUIBase):
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Cursor = MagPlusCursor
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def __init__(self, parent):
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GUIBase.__init__(self, parent)
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self.StartRBBox = None
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self.PrevRBBox = None
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def OnLeftDown(self, event):
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self.StartRBBox = N.array( event.GetPosition() )
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self.PrevRBBox = None
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self.parent.CaptureMouse()
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def OnLeftUp(self, event):
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#if self.parent.HasCapture():
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# self.parent.ReleaseMouse()
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if event.LeftUp() and not self.StartRBBox is None:
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self.PrevRBBox = None
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EndRBBox = event.GetPosition()
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StartRBBox = self.StartRBBox
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# if mouse has moved less that ten pixels, don't use the box.
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if ( abs(StartRBBox[0] - EndRBBox[0]) > 10
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and abs(StartRBBox[1] - EndRBBox[1]) > 10 ):
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EndRBBox = self.parent.PixelToWorld(EndRBBox)
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StartRBBox = self.parent.PixelToWorld(StartRBBox)
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BB = N.array(((min(EndRBBox[0],StartRBBox[0]),
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min(EndRBBox[1],StartRBBox[1])),
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(max(EndRBBox[0],StartRBBox[0]),
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max(EndRBBox[1],StartRBBox[1]))),N.float_)
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self.parent.ZoomToBB(BB)
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else:
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Center = self.parent.PixelToWorld(StartRBBox)
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self.parent.Zoom(1.5,Center)
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self.StartRBBox = None
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def OnMove(self, event):
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# Allways raise the Move event.
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self.parent._RaiseMouseEvent(event,FloatCanvas.EVT_FC_MOTION)
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if event.Dragging() and event.LeftIsDown() and not (self.StartRBBox is None):
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xy0 = self.StartRBBox
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xy1 = N.array( event.GetPosition() )
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wh = abs(xy1 - xy0)
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wh[0] = max(wh[0], int(wh[1]*self.parent.AspectRatio))
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wh[1] = int(wh[0] / self.parent.AspectRatio)
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xy_c = (xy0 + xy1) / 2
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dc = wx.ClientDC(self.parent)
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dc.BeginDrawing()
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dc.SetPen(wx.Pen('WHITE', 2, wx.SHORT_DASH))
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dc.SetBrush(wx.TRANSPARENT_BRUSH)
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dc.SetLogicalFunction(wx.XOR)
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if self.PrevRBBox:
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dc.DrawRectanglePointSize(*self.PrevRBBox)
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self.PrevRBBox = ( xy_c - wh/2, wh )
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dc.DrawRectanglePointSize( *self.PrevRBBox )
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dc.EndDrawing()
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def UpdateScreen(self):
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"""
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Update gets called if the screen has been repainted in the middle of a zoom in
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so the Rubber Band Box can get updated
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"""
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if self.PrevRBBox is not None:
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dc = wx.ClientDC(self.parent)
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dc.SetPen(wx.Pen('WHITE', 2, wx.SHORT_DASH))
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dc.SetBrush(wx.TRANSPARENT_BRUSH)
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dc.SetLogicalFunction(wx.XOR)
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dc.DrawRectanglePointSize(*self.PrevRBBox)
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def OnRightDown(self, event):
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self.parent.Zoom(1/1.5, event.GetPosition(), centerCoords="pixel")
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def OnWheel(self, event):
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if event.GetWheelRotation() < 0:
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self.parent.Zoom(0.9)
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else:
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self.parent.Zoom(1.1)
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class GUIZoomOut(GUIBase):
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Cursor = MagMinusCursor
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def OnLeftDown(self, event):
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self.parent.Zoom(1/1.5, event.GetPosition(), centerCoords="pixel")
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def OnRightDown(self, event):
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self.parent.Zoom(1.5, event.GetPosition(), centerCoords="pixel")
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def OnWheel(self, event):
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if event.GetWheelRotation() < 0:
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self.parent.Zoom(0.9)
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else:
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self.parent.Zoom(1.1)
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def OnMove(self, event):
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# Allways raise the Move event.
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self.parent._RaiseMouseEvent(event,FloatCanvas.EVT_FC_MOTION)
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