1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
|
#!/usr/bin/env python
"""
Module that holds the GUI modes used by FloatCanvas
Note that this can only be imported after a wx.App() has been created.
This approach was inpired by Christian Blouin, who also wrote the initial
version of the code.
"""
import wx
## fixme: events should live in their own module, so all of FloatCanvas
## wouldn't have to be imported here.
import FloatCanvas, Resources
from Utilities import BBox
import numpy as N
class Cursors(object):
"""
Class to hold the standard Cursors
"""
def __init__(self):
if "wxMac" in wx.PlatformInfo: # use 16X16 cursors for wxMac
self.HandCursor = wx.CursorFromImage(Resources.getHand16Image())
self.GrabHandCursor = wx.CursorFromImage(Resources.getGrabHand16Image())
img = Resources.getMagPlus16Image()
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 6)
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 6)
self.MagPlusCursor = wx.CursorFromImage(img)
img = Resources.getMagMinus16Image()
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 6)
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 6)
self.MagMinusCursor = wx.CursorFromImage(img)
else: # use 24X24 cursors for GTK and Windows
self.HandCursor = wx.CursorFromImage(Resources.getHandImage())
self.GrabHandCursor = wx.CursorFromImage(Resources.getGrabHandImage())
img = Resources.getMagPlusImage()
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 9)
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 9)
self.MagPlusCursor = wx.CursorFromImage(img)
img = Resources.getMagMinusImage()
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_X, 9)
img.SetOptionInt(wx.IMAGE_OPTION_CUR_HOTSPOT_Y, 9)
self.MagMinusCursor = wx.CursorFromImage(img)
class GUIBase(object):
"""
Basic Mouse mode and baseclass for other GUImode.
This one does nothing with any event
"""
def __init__(self, Canvas=None):
self.Canvas = Canvas # set the FloatCanvas for the mode
# it gets set when the Mode is set on the Canvas.
self.Cursors = Cursors()
Cursor = wx.NullCursor
def UnSet(self):
"""
this method gets called by FloatCanvas when a new mode is being set
on the Canvas
"""
pass
# Handlers
def OnLeftDown(self, event):
pass
def OnLeftUp(self, event):
pass
def OnLeftDouble(self, event):
pass
def OnRightDown(self, event):
pass
def OnRightUp(self, event):
pass
def OnRightDouble(self, event):
pass
def OnMiddleDown(self, event):
pass
def OnMiddleUp(self, event):
pass
def OnMiddleDouble(self, event):
pass
def OnWheel(self, event):
pass
def OnMove(self, event):
pass
def OnKeyDown(self, event):
pass
def OnKeyUp(self, event):
pass
def UpdateScreen(self):
"""
Update gets called if the screen has been repainted in the middle of a zoom in
so the Rubber Band Box can get updated. Other GUIModes may require something similar
"""
pass
class GUIMouse(GUIBase):
"""
Mouse mode checks for a hit test, and if nothing is hit,
raises a FloatCanvas mouse event for each event.
"""
Cursor = wx.NullCursor
# Handlers
def OnLeftDown(self, event):
EventType = FloatCanvas.EVT_FC_LEFT_DOWN
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnLeftUp(self, event):
EventType = FloatCanvas.EVT_FC_LEFT_UP
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnLeftDouble(self, event):
EventType = FloatCanvas.EVT_FC_LEFT_DCLICK
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnMiddleDown(self, event):
EventType = FloatCanvas.EVT_FC_MIDDLE_DOWN
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnMiddleUp(self, event):
EventType = FloatCanvas.EVT_FC_MIDDLE_UP
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnMiddleDouble(self, event):
EventType = FloatCanvas.EVT_FC_MIDDLE_DCLICK
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnRightDown(self, event):
EventType = FloatCanvas.EVT_FC_RIGHT_DOWN
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnRightUp(self, event):
EventType = FloatCanvas.EVT_FC_RIGHT_UP
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnRightDouble(self, event):
EventType = FloatCanvas.EVT_FC_RIGHT_DCLICK
if not self.Canvas.HitTest(event, EventType):
self.Canvas._RaiseMouseEvent(event, EventType)
def OnWheel(self, event):
EventType = FloatCanvas.EVT_FC_MOUSEWHEEL
self.Canvas._RaiseMouseEvent(event, EventType)
def OnMove(self, event):
## The Move event always gets raised, even if there is a hit-test
self.Canvas.MouseOverTest(event)
self.Canvas._RaiseMouseEvent(event,FloatCanvas.EVT_FC_MOTION)
class GUIMove(GUIBase):
"""
Mode that moves the image (pans).
It doesn't change any coordinates, it only changes what the viewport is
"""
def __init__(self, canvas=None):
GUIBase.__init__(self, canvas)
self.Cursor = self.Cursors.HandCursor
self.GrabCursor = self.Cursors.GrabHandCursor
self.StartMove = None
self.MidMove = None
self.PrevMoveXY = None
## timer to give a delay when moving so that buffers aren't re-built too many times.
self.MoveTimer = wx.PyTimer(self.OnMoveTimer)
def OnLeftDown(self, event):
self.Canvas.SetCursor(self.GrabCursor)
self.Canvas.CaptureMouse()
self.StartMove = N.array( event.GetPosition() )
self.MidMove = self.StartMove
self.PrevMoveXY = (0,0)
def OnLeftUp(self, event):
self.Canvas.SetCursor(self.Cursor)
if self.StartMove is not None:
self.EndMove = N.array(event.GetPosition())
DiffMove = self.MidMove-self.EndMove
self.Canvas.MoveImage(DiffMove, 'Pixel', ReDraw=True)
def OnMove(self, event):
# Always raise the Move event.
self.Canvas._RaiseMouseEvent(event, FloatCanvas.EVT_FC_MOTION)
if event.Dragging() and event.LeftIsDown() and not self.StartMove is None:
self.EndMove = N.array(event.GetPosition())
self.MoveImage(event)
DiffMove = self.MidMove-self.EndMove
self.Canvas.MoveImage(DiffMove, 'Pixel', ReDraw=False)# reset the canvas without re-drawing
self.MidMove = self.EndMove
self.MoveTimer.Start(30, oneShot=True)
def OnMoveTimer(self, event=None):
self.Canvas.Draw()
def UpdateScreen(self):
## The screen has been re-drawn, so StartMove needs to be reset.
self.StartMove = self.MidMove
def MoveImage(self, event ):
#xy1 = N.array( event.GetPosition() )
xy1 = self.EndMove
wh = self.Canvas.PanelSize
xy_tl = xy1 - self.StartMove
dc = wx.ClientDC(self.Canvas)
dc.BeginDrawing()
x1,y1 = self.PrevMoveXY
x2,y2 = xy_tl
w,h = self.Canvas.PanelSize
##fixme: This sure could be cleaner!
## This is all to fill in the background with the background color
## without flashing as the image moves.
if x2 > x1 and y2 > y1:
xa = xb = x1
ya = yb = y1
wa = w
ha = y2 - y1
wb = x2- x1
hb = h
elif x2 > x1 and y2 <= y1:
xa = x1
ya = y1
wa = x2 - x1
ha = h
xb = x1
yb = y2 + h
wb = w
hb = y1 - y2
elif x2 <= x1 and y2 > y1:
xa = x1
ya = y1
wa = w
ha = y2 - y1
xb = x2 + w
yb = y1
wb = x1 - x2
hb = h - y2 + y1
elif x2 <= x1 and y2 <= y1:
xa = x2 + w
ya = y1
wa = x1 - x2
ha = h
xb = x1
yb = y2 + h
wb = w
hb = y1 - y2
dc.SetPen(wx.TRANSPARENT_PEN)
dc.SetBrush(self.Canvas.BackgroundBrush)
dc.DrawRectangle(xa, ya, wa, ha)
dc.DrawRectangle(xb, yb, wb, hb)
self.PrevMoveXY = xy_tl
if self.Canvas._ForeDrawList:
dc.DrawBitmapPoint(self.Canvas._ForegroundBuffer,xy_tl)
else:
dc.DrawBitmapPoint(self.Canvas._Buffer,xy_tl)
dc.EndDrawing()
#self.Canvas.Update()
def OnWheel(self, event):
"""
By default, zoom in/out by a 0.1 factor per Wheel event.
"""
if event.GetWheelRotation() < 0:
self.Canvas.Zoom(0.9)
else:
self.Canvas.Zoom(1.1)
class GUIZoomIn(GUIBase):
def __init__(self, canvas=None):
GUIBase.__init__(self, canvas)
self.StartRBBox = None
self.PrevRBBox = None
self.Cursor = self.Cursors.MagPlusCursor
def OnLeftDown(self, event):
self.StartRBBox = N.array( event.GetPosition() )
self.PrevRBBox = None
self.Canvas.CaptureMouse()
def OnLeftUp(self, event):
if event.LeftUp() and not self.StartRBBox is None:
self.PrevRBBox = None
EndRBBox = event.GetPosition()
StartRBBox = self.StartRBBox
# if mouse has moved less that ten pixels, don't use the box.
if ( abs(StartRBBox[0] - EndRBBox[0]) > 10
and abs(StartRBBox[1] - EndRBBox[1]) > 10 ):
EndRBBox = self.Canvas.PixelToWorld(EndRBBox)
StartRBBox = self.Canvas.PixelToWorld(StartRBBox)
self.Canvas.ZoomToBB( BBox.fromPoints(N.r_[EndRBBox,StartRBBox]) )
else:
Center = self.Canvas.PixelToWorld(StartRBBox)
self.Canvas.Zoom(1.5,Center)
self.StartRBBox = None
def OnMove(self, event):
# Always raise the Move event.
self.Canvas._RaiseMouseEvent(event,FloatCanvas.EVT_FC_MOTION)
if event.Dragging() and event.LeftIsDown() and not (self.StartRBBox is None):
xy0 = self.StartRBBox
xy1 = N.array( event.GetPosition() )
wh = abs(xy1 - xy0)
wh[0] = max(wh[0], int(wh[1]*self.Canvas.AspectRatio))
wh[1] = int(wh[0] / self.Canvas.AspectRatio)
xy_c = (xy0 + xy1) / 2
dc = wx.ClientDC(self.Canvas)
dc.BeginDrawing()
dc.SetPen(wx.Pen('WHITE', 2, wx.SHORT_DASH))
dc.SetBrush(wx.TRANSPARENT_BRUSH)
dc.SetLogicalFunction(wx.XOR)
if self.PrevRBBox:
dc.DrawRectanglePointSize(*self.PrevRBBox)
self.PrevRBBox = ( xy_c - wh/2, wh )
dc.DrawRectanglePointSize( *self.PrevRBBox )
dc.EndDrawing()
def UpdateScreen(self):
"""
Update gets called if the screen has been repainted in the middle of a zoom in
so the Rubber Band Box can get updated
"""
#if False:
if self.PrevRBBox is not None:
dc = wx.ClientDC(self.Canvas)
dc.SetPen(wx.Pen('WHITE', 2, wx.SHORT_DASH))
dc.SetBrush(wx.TRANSPARENT_BRUSH)
dc.SetLogicalFunction(wx.XOR)
dc.DrawRectanglePointSize(*self.PrevRBBox)
def OnRightDown(self, event):
self.Canvas.Zoom(1/1.5, event.GetPosition(), centerCoords="pixel")
def OnWheel(self, event):
if event.GetWheelRotation() < 0:
self.Canvas.Zoom(0.9)
else:
self.Canvas.Zoom(1.1)
class GUIZoomOut(GUIBase):
def __init__(self, Canvas=None):
GUIBase.__init__(self, Canvas)
self.Cursor = self.Cursors.MagMinusCursor
def OnLeftDown(self, event):
self.Canvas.Zoom(1/1.5, event.GetPosition(), centerCoords="pixel")
def OnRightDown(self, event):
self.Canvas.Zoom(1.5, event.GetPosition(), centerCoords="pixel")
def OnWheel(self, event):
if event.GetWheelRotation() < 0:
self.Canvas.Zoom(0.9)
else:
self.Canvas.Zoom(1.1)
def OnMove(self, event):
# Always raise the Move event.
self.Canvas._RaiseMouseEvent(event,FloatCanvas.EVT_FC_MOTION)
|