The wxPython tutorial

More documents

Recommendations

Info

The Graphics Device Interfacehttp://www.zetcode.com/wxpython/gdi/dc.SetBrush(brush)dc.DrawRectangle(0, 0, RW+2*RM, RH)dc.SetFont(self.font)dc.SetPen(wx.Pen('#F8FF25'))dc.SetTextForeground('#F8FF25')for i in range(RW):if not (i % 100):dc.DrawLine(i+RM, 0, i+RM, 10)w, h = dc.GetTextExtent(str(i))dc.DrawText(str(i), i+RM-w/2, 11)elif not (i % 20):dc.DrawLine(i+RM, 0, i+RM, 8)elif not (i % 2): dc.DrawLine(i+RM, 0, i+RM, 4)def OnLeftDown(self, event):pos = event.GetPosition()x, y = self.ClientToScreen(event.GetPosition())ox, oy = self.GetPosition()dx = x - oxdy = y - oyself.delta = ((dx, dy))def OnMouseMove(self, event):if event.Dragging() and event.LeftIsDown():x, y = self.ClientToScreen(event.GetPosition())fp = (x - self.delta[0], y - self.delta[1])self.Move(fp)def OnRightDown(self, event):self.Close()app = wx.App()Ruler1(None, -1, '')app.MainLoop()In this example we create a ruler. This ruler will measurescreen objects in pixels. We left the default mapping mode,which is wx.MM_TEXT. As we have already mentioned, thismode has the same logical and device units. In our case,pixels.wx.Frame.__init__(self, parent, id, title, size=(RW + 2*RM, 60), style=wx.FRAMEwx.NO_BORDER | wx.STAY_ON_TOP)We have created a borderless window. The ruler is 721 pxwide. The ruler is RW + 2*RM = 701 + 20 = 721. The rulershows 700 numbers. 0 ... 700 is 701 pixels. A ruler has a34 de 44 27/04/2008 1:08
The Graphics Device Interfacehttp://www.zetcode.com/wxpython/gdi/margin on both sides, 2*10 is 20 pixels. Together it makes721 pixels.brush = wx.BrushFromBitmap(wx.Bitmap('granite.png'))dc.SetBrush(brush)dc.DrawRectangle(0, 0, RW+2*RM, RH)Here we draw a custom pattern onto the window. I have useda predefined pattern available in the GIMP. It is called granite.w, h = dc.GetTextExtent(str(i))dc.DrawText(str(i), i+RM-w/2, 11)These lines ensure, that we align the text correctly. TheGetTextExtent() method returns the width and the height ofthe text.We do not have a border around our window. So we musthandle moving manually by additional code. The OnLeftDown()and the OnMouseMove() methods enable us to move the ruler.(TODO:link to dragging.)Figure: First ruler exampleP R A C T I C A L E X A M P L E SYou might ask yourself, why do we need all those lines, pens,gradients? What is it good for? The following scripts will bringsome practical examples. We will utilize, what we have learntin practice.ChartsCreating charts is an excelent example of utilizing gdi drawingfunctions. Charts are not GUI widgets. No gui toolkit provides35 de 44 27/04/2008 1:08
Page 1 and 2:
The wxPython tutorialhttp://www.zet
Page 3 and 4:
Introduction to wxPythonhttp://www.
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
http://www.zetcode.com/wxpython/fir
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Menus and Toolbars in wxPythonhttp:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Layout management in wxPythonhttp:/
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Events in wxPythonhttp://www.zetcod
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
wxPython dialogshttp://www.zetcode.
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
wxPython widgetshttp://www.zetcode.
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Advanced widgetshttp://www.zetcode.
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Drag and drop in wxPythonhttp://www
Page 129 and 130:
Internationalizationhttp://www.zetc
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Working with databaseshttp://www.ze
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Application skeletons in wxPythonht
Page 155 and 156:
Application skeletons in wxPythonht
Page 157 and 158: Application skeletons in wxPythonht
Page 165 and 166: Creating custom widgetshttp://www.z
Page 173 and 174: xml resource fileshttp://www.zetcod
Page 175 and 176: The Graphics Device Interfacehttp:/
Page 207: The Graphics Device Interfacehttp:/
Page 219 and 220: http://www.zetcode.com/wxpython/tip
Page 235 and 236: wxPython griptshttp://www.zetcode.c
Page 247 and 248: The Tetris game in wxPythonhttp://w
Page 257: The Tetris game in wxPythonhttp://w
show all

The wxPython tutorial

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?