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
|
"""
/*
* This file is part of PySide: Python for Qt
*
* Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
*
* Contact: PySide team <contact@pyside.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
"""
from PySide.QtCore import *
from PySide.QtGui import *
from hyperuilib.shared.dataresource import *
class DraggablePreview(QGraphicsWidget):
def SCALED_POS(self, sw, sh, scale):
return QPointF(round(sw * 0.5 - (sw * 0.5 + self._leftMargin) * scale),
round(sh - (sh + self._topMargin) * 0.5 * scale))
def __init__(self, item, screenSize, parent = None):
QGraphicsWidget.__init__(self, parent)
self._item = item
self._screenSize = screenSize
self._border = Resource.intValue("draggable-preview/border")
self._topMargin = Resource.intValue("draggable-preview/margin-top")
self._leftMargin = Resource.intValue("draggable-preview/margin-left")
self._maximizeRange = Resource.doubleValue("draggable-preview/maximize-range")
self._minimumOffset = Resource.intValue("draggable-preview/minimum-offset")
self.setFlag(QGraphicsItem.ItemHasNoContents)
self.setupInterface()
def setupInterface(self):
# add background item
self._backgroundPixmap = Resource.pixmap("screen_unlock.png")
self._background = QGraphicsPixmapItem(self._backgroundPixmap, self)
self._background.setPos(0, 0)
self._background.setFlag(QGraphicsItem.ItemStacksBehindParent)
self._background.setShapeMode(QGraphicsPixmapItem.BoundingRectShape)
# add embedded widget
self._item.setParentItem(self)
self._item.setFlag(QGraphicsItem.ItemStacksBehindParent)
self._item.setPos(self._leftMargin + self._border, self._topMargin + self._border)
self._item.resize(QSizeF(self._screenSize))
# resize to the background size
self.resize(QSizeF(self._backgroundPixmap.size()))
sw = self._screenSize.width()
sh = self._screenSize.height()
minimumScale = Resource.doubleValue("draggable-preview/minimum-scale")
draggableScale = Resource.doubleValue("draggable-preview/first-zoom-scale")
self._draggablePos = self.SCALED_POS(sw, sh, draggableScale)
minimumPos = self.SCALED_POS(sw, sh, minimumScale)
maximumPos = QPointF(-self._leftMargin - self._border, -self._topMargin - self._border)
self._maximumOffset = minimumPos.y()
self._machine = QStateMachine(self)
self._minimizedState = QState()
self._minimizedState.assignProperty(self, "pos", minimumPos)
self._minimizedState.assignProperty(self, "scale", minimumScale)
self._draggableState = QState()
self._draggableState.assignProperty(self, "pos", self._draggablePos)
self._draggableState.assignProperty(self, "scale", draggableScale)
self._maximizedState = QState()
self._maximizedState.assignProperty(self, "pos", maximumPos)
self._maximizedState.assignProperty(self, "scale", 1.0)
restoreTime = Resource.intValue("draggable-preview/restore-time")
maximizeTime = Resource.intValue("draggable-preview/maximize-time")
firstZoomTime = Resource.intValue("draggable-preview/first-zoom-time")
# create minimized > draggable state transition
transition = self._minimizedState.addTransition(self, SIGNAL("draggableStarted()"),
self._draggableState)
transition.addAnimation(self.createAnimation(firstZoomTime))
# create draggable > minimized state transition
transition = self._draggableState.addTransition(self, SIGNAL("minimizeStarted()"),
self._minimizedState)
transition.addAnimation(self.createAnimation(restoreTime))
# create draggable > maximized state transition
transition = self._draggableState.addTransition(self, SIGNAL("maximizeStarted()"),
self._maximizedState)
transition.addAnimation(self.createAnimation(maximizeTime, SLOT("onMaximizeFinished()")))
# this is used just to update the final value when still animating
transition = self._draggableState.addTransition(self, SIGNAL("draggableUpdate()"),
self._draggableState)
transition.addAnimation(self.createAnimation(0))
# add states
self._machine.addState(self._minimizedState)
self._machine.addState(self._draggableState)
self._machine.addState(self._maximizedState)
self.setPos(minimumPos)
self.setScale(minimumScale)
self._machine.setInitialState(self._minimizedState)
self._machine.start()
def createAnimation(self, time, slot = None):
result = QParallelAnimationGroup()
posAnimation = QPropertyAnimation(self, "pos")
posAnimation.setEasingCurve(QEasingCurve(QEasingCurve.InSine))
posAnimation.setDuration(time)
scaleAnimation = QPropertyAnimation(self, "scale")
scaleAnimation.setEasingCurve(QEasingCurve(QEasingCurve.InSine))
scaleAnimation.setDuration(time)
result.addAnimation(posAnimation)
result.addAnimation(scaleAnimation)
if slot:
self.connect(result, SIGNAL("finished()"), slot)
return result
def onMaximizeFinished(self):
# hide background
self._background.hide()
# move menu to front to not block events
self._item.setFlag(QGraphicsItem.ItemStacksBehindParent, False)
self.emit(SIGNAL("maximizeFinished()"))
# detach from parent to avoid inherit transformations
self._item.setParentItem(None)
self._item.setPos(0, 0)
def mousePressEvent(self, e):
self._lastPos = e.scenePos()
self._draggableState.assignProperty(self, "pos", self._draggablePos)
self.emit(SIGNAL("draggableStarted()"))
def mouseMoveEvent(self, e):
offset = round(self.pos().y() + e.scenePos().y() - self._lastPos.y())
self._lastPos = e.scenePos()
fy = max(self._minimumOffset, min(offset, self._maximumOffset))
if fy < self._draggablePos.y():
self._draggableState.assignProperty(self, "pos",
QPointF(self._draggablePos.x(), fy))
self.emit(SIGNAL("draggableUpdate()"))
def mouseReleaseEvent(self, e):
if self.pos().y() < self._minimumOffset + self._maximizeRange:
self.emit(SIGNAL("maximizeStarted()"))
else:
self.emit(SIGNAL("minimizeStarted()"))
|
