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comparison python/hexedit.py @ 139:2ec4d4332b7a

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Improve hexedit
author Windel Bouwman
date Sat, 26 Jan 2013 19:44:36 +0100
parents 0a540ce31cd5
children 104037b292cc
comparison
equal deleted inserted replaced
138:14e739ed03ab 139:2ec4d4332b7a
1 import sys 1 import sys
2 from PyQt4.QtCore import * 2 from PyQt4.QtCore import *
3 from PyQt4.QtGui import * 3 from PyQt4.QtGui import *
4 4
5 BYTES_PER_LINE = 8 5 BYTES_PER_LINE, GAP = 8, 12
6 GAP = 12
7 6
8 def clamp(minimum, x, maximum): 7 def clamp(minimum, x, maximum):
9 return max(minimum, min(x, maximum)) 8 return max(minimum, min(x, maximum))
10 9
11 def asciiChar(v): 10 def asciiChar(v):
44 self.blinkcursor = True 43 self.blinkcursor = True
45 self.update() 44 self.update()
46 def getCursorPosition(self): 45 def getCursorPosition(self):
47 return self.cursorPosition 46 return self.cursorPosition
48 CursorPosition = property(getCursorPosition, setCursorPosition) 47 CursorPosition = property(getCursorPosition, setCursorPosition)
49 def getOffset(self):
50 return self.offset
51 def setOffset(self, off): 48 def setOffset(self, off):
52 self.offset = off 49 self.offset = off
53 self.update() 50 self.update()
54 Offset = property(getOffset, setOffset) 51 Offset = property(lambda self: self.offset, setOffset)
55 def paintEvent(self, event): 52 def paintEvent(self, event):
56 # Helper variables: 53 # Helper variables:
57 er = event.rect() 54 er = event.rect()
58 chw, chh = self.charWidth, self.charHeight 55 chw, chh = self.charWidth, self.charHeight
59 painter = QPainter(self) 56 painter = QPainter(self)
113 else: 110 else:
114 self.data[i] = (self.data[i] & 0xF0) | v 111 self.data[i] = (self.data[i] & 0xF0) | v
115 self.CursorPosition += 1 112 self.CursorPosition += 1
116 self.scrollArea.ensureVisible(self.cursorX, self.cursorY + self.charHeight / 2, 4, self.charHeight / 2 + 4) 113 self.scrollArea.ensureVisible(self.cursorX, self.cursorY + self.charHeight / 2, 4, self.charHeight / 2 + 4)
117 self.update() 114 self.update()
118 def cursorPositionAt(self, pos): 115 def setCursorPositionAt(self, pos):
119 """ Calculate cursor position at a certain point """ 116 """ Calculate cursor position at a certain point """
120 if pos.x() > self.xposHex and pos.x() < self.xposAscii: 117 if pos.x() > self.xposHex and pos.x() < self.xposAscii:
121 x = (pos.x() - self.xposHex) / self.charWidth 118 x = round((2 * (pos.x() - self.xposHex)) / (self.charWidth * 3))
122 y = int(pos.y() / self.charHeight) * 2 * BYTES_PER_LINE 119 y = int(pos.y() / self.charHeight) * 2 * BYTES_PER_LINE
123 return x + y 120 self.setCursorPosition(x + y)
124 return 0
125 def mousePressEvent(self, event): 121 def mousePressEvent(self, event):
126 cpos = self.cursorPositionAt(event.pos()) 122 self.setCursorPositionAt(event.pos())
127 self.setCursorPosition(cpos)
128 def adjust(self): 123 def adjust(self):
129 self.charHeight = self.fontMetrics().height() 124 self.charHeight = self.fontMetrics().height()
130 self.charWidth = self.fontMetrics().width('x') 125 self.charWidth = self.fontMetrics().width('x')
131 self.xposAddr = GAP 126 self.xposAddr = GAP
132 self.xposHex = self.xposAddr + 8 * self.charWidth + GAP 127 self.xposHex = self.xposAddr + 8 * self.charWidth + GAP
133 self.xposAscii = self.xposHex + (BYTES_PER_LINE * 3 - 1) * self.charWidth + GAP 128 self.xposAscii = self.xposHex + (BYTES_PER_LINE * 3 - 1) * self.charWidth + GAP
134 self.xposEnd = self.xposAscii + self.charWidth * BYTES_PER_LINE + GAP 129 self.xposEnd = self.xposAscii + self.charWidth * BYTES_PER_LINE + GAP
135 self.setMinimumWidth(self.xposEnd) 130 self.setMinimumWidth(self.xposEnd)
136 sbw = self.scrollArea.verticalScrollBar().width() 131 sbw = self.scrollArea.verticalScrollBar().width()
137 self.scrollArea.setMinimumWidth(self.xposEnd + sbw + 5) 132 self.scrollArea.setMinimumWidth(self.xposEnd + sbw + 5)
138 self.setMinimumHeight((int(len(self.Data) / BYTES_PER_LINE) + 1) * self.charHeight) 133 r = len(self.Data) % BYTES_PER_LINE
134 r = 1 if r > 0 else 0
135 self.setMinimumHeight((int(len(self.Data) / BYTES_PER_LINE) + r) * self.charHeight + 4)
139 self.scrollArea.setMinimumHeight(self.charHeight * 8) 136 self.scrollArea.setMinimumHeight(self.charHeight * 8)
140 self.update() 137 self.update()
141 def getData(self):
142 return self.data
143 def setData(self, d): 138 def setData(self, d):
144 self.data = d 139 self.data = d
145 self.adjust() 140 self.adjust()
146 self.setCursorPosition(0) 141 self.setCursorPosition(0)
147 Data = property(getData, setData) 142 Data = property(lambda self: self.data, setData)
148 143
149 class HexEdit(QScrollArea): 144 class HexEdit(QScrollArea):
150 def __init__(self): 145 def __init__(self):
151 super().__init__() 146 super().__init__()
152 self.bv = BinViewer(self) 147 self.bv = BinViewer(self)
157 152
158 if __name__ == '__main__': 153 if __name__ == '__main__':
159 app = QApplication(sys.argv) 154 app = QApplication(sys.argv)
160 he = HexEdit() 155 he = HexEdit()
161 he.show() 156 he.show()
162 he.bv.Data = bytearray(range(100)) * 8 + b'hjkfd' 157 he.bv.Data = bytearray(range(100)) * 8 + b'x'
163 app.exec() 158 app.exec()
164 159