| | 1 | |
| | 2 | from wxPython.wx import * |
| | 3 | |
| | 4 | #------------------------------------------------------------------- |
| | 5 | # class MyWindow(wxScrolledWindow): |
| | 6 | #---------------------------------- |
| | 7 | # Copes with the drawing of the main scrolled window. |
| | 8 | # |
| | 9 | # Data members: |
| | 10 | # num - <int> number of list entries |
| | 11 | # ostart - <int> line number of the top line of the previous redraw |
| | 12 | # vw - <int> width of the viewing window |
| | 13 | # vh - <int> height of the viewing window |
| | 14 | # smalltext - <int> 0 = size 12pt, 1 = size 9pt text |
| | 15 | # |
| | 16 | # Method members: |
| | 17 | # OnPaint(evt) - basic draw handler |
| | 18 | # OnDraw(dc) - called by OnPaint, redraws the screen if required |
| | 19 | # update(updatelist) - called every 3 seconds if updates are needed. |
| | 20 | |
| | 21 | class MyWindow(wxScrolledWindow): |
| | 22 | def __init__(self,num,parent,id,pos,size,style): |
| | 23 | wxScrolledWindow.__init__(self,parent,id,pos,size,style) |
| | 24 | self.SetBackgroundColour(wxWHITE) |
| | 25 | |
| | 26 | self.num=num |
| | 27 | self.ostart=0 |
| | 28 | self.smalltext = 0 |
| | 29 | self.vw,self.vh=self.GetClientSizeTuple() |
| | 30 | |
| | 31 | # calculate font pt size needed: a bit of a kludge to get round |
| | 32 | # font compatibility problems of X and Windows. |
| | 33 | dc=wxClientDC(self) |
| | 34 | |
| | 35 | dc.SetFont(wxFont(12,wxDEFAULT,wxNORMAL,wxNORMAL,FALSE)) |
| | 36 | if dc.GetTextExtent("XXXXXXXXXX")[0] > 100: |
| | 37 | self.smalltext = 1 |
| | 38 | |
| | 39 | def OnPaint(self,evt): |
| | 40 | """ overriding OnPaint to give handler. """ |
| | 41 | dc = wxPaintDC(self) |
| | 42 | self.PrepareDC(dc) |
| | 43 | self.OnDraw(dc) |
| | 44 | |
| | 45 | def update(self,updlist): |
| | 46 | """ handles line by line updating of list entries. """ |
| | 47 | dc = wxClientDC(self) |
| | 48 | self.PrepareDC(dc) |
| | 49 | dc.SetBrush(wxWHITE_BRUSH) |
| | 50 | dc.SetPen(wxWHITE_PEN) |
| | 51 | |
| | 52 | if self.smalltext == 1: |
| | 53 | dc.SetFont(wxFont(9,wxDEFAULT,wxNORMAL,wxNORMAL,FALSE)) |
| | 54 | else: |
| | 55 | dc.SetFont(wxFont(12,wxDEFAULT,wxNORMAL,wxNORMAL,FALSE)) |
| | 56 | |
| | 57 | dc.BeginDrawing() |
| | 58 | |
| | 59 | for i in updlist: |
| | 60 | if i >= self.ostart and i < self.ostart+self.vh/17+1: |
| | 61 | dc.DrawRectangle(0,i*17,self.vw,17) |
| | 62 | dc.DrawText("This is a simple test.Line "+str(i)+".", |
| | 63 | 10,i*17+2) |
| | 64 | dc.EndDrawing() |
| | 65 | |
| | 66 | def OnDraw(self,dc): |
| | 67 | """ Main redraw function. """ |
| | 68 | |
| | 69 | if self.smalltext == 1: |
| | 70 | dc.SetFont(wxFont(9,wxDEFAULT,wxNORMAL,wxNORMAL,FALSE)) |
| | 71 | else: |
| | 72 | dc.SetFont(wxFont(12,wxDEFAULT,wxNORMAL,wxNORMAL,FALSE)) |
| | 73 | |
| | 74 | vx,vstart=self.ViewStart() |
| | 75 | self.vw,self.vh=self.GetClientSizeTuple() |
| | 76 | vend=vstart+(self.vh/17) + 1 |
| | 77 | if vend > self.num: vend = self.num |
| | 78 | |
| | 79 | dc.BeginDrawing() |
| | 80 | if vstart > self.ostart: # if moving downwards... |
| | 81 | for i in range(vend-(vstart-self.ostart+1),vend): |
| | 82 | dc.DrawText("This is a simple test. Line "+str(i)+".", |
| | 83 | 10,i*17+2) |
| | 84 | |
| | 85 | elif vstart < self.ostart: # if moving upwards... |
| | 86 | for i in range(vstart,self.ostart): |
| | 87 | dc.DrawText("This is a simple test. Line "+str(i)+".", |
| | 88 | 10,i*17+2) |
| | 89 | |
| | 90 | elif vstart == self.ostart: # if not moving (redraw)... |
| | 91 | #dc.Clear() |
| | 92 | for i in range(vstart,vend): |
| | 93 | dc.DrawText("This is a simple test. Line "+str(i)+".", |
| | 94 | 10,i*17+2) |
| | 95 | |
| | 96 | dc.EndDrawing() |
| | 97 | self.ostart=vstart |
| | 98 | |
| | 99 | #-------------------------------------------------------------------- |
| | 100 | |
| | 101 | class MyTimer(wxTimer): |
| | 102 | def __init__(self,frame): |
| | 103 | wxTimer.__init__(self) |
| | 104 | self.frame_ = frame |
| | 105 | |
| | 106 | def Notify(self): |
| | 107 | self.frame_.idle() |
| | 108 | |
| | 109 | |
| | 110 | class MyFrame(wxFrame): |
| | 111 | def __init__(self, parent, id, title): |
| | 112 | wxFrame.__init__(self, parent, id, title, |
| | 113 | wxPoint(100, 100), wxSize(500, 300)) |
| | 114 | |
| | 115 | # number of entries |
| | 116 | self.num = 30 |
| | 117 | |
| | 118 | # set up the scrolling window... |
| | 119 | self.sw = MyWindow(self.num,self, -1, |
| | 120 | wxDefaultPosition, wxDefaultSize, |
| | 121 | wxVSCROLL|wxSUNKEN_BORDER) |
| | 122 | |
| | 123 | self.sw.SetScrollbars(1,17,0,self.num+1) |
| | 124 | |
| | 125 | lc = wxLayoutConstraints() |
| | 126 | lc.top.SameAs(self, wxTop, 5) |
| | 127 | lc.left.SameAs(self, wxLeft, 5) |
| | 128 | lc.bottom.SameAs(self, wxBottom, 5) |
| | 129 | lc.right.SameAs(self, wxRight,5) |
| | 130 | self.sw.SetConstraints(lc) |
| | 131 | |
| | 132 | self.timer=MyTimer(self) |
| | 133 | # stupidly short interval time to accelerate memory leak problem: |
| | 134 | self.timer.Start(80) |
| | 135 | |
| | 136 | def idle(self): |
| | 137 | #usually just update one or two lines; to accelerate problem, |
| | 138 | #every line is updated here. |
| | 139 | self.sw.update(range(self.num)) |
| | 140 | |
| | 141 | |
| | 142 | ###################################################################### |
| | 143 | # Main procedure.... |
| | 144 | |
| | 145 | if __name__ == "__main__": |
| | 146 | class MyApp(wxApp): |
| | 147 | def OnInit(self): |
| | 148 | |
| | 149 | self.frame = MyFrame(NULL, -1, "Memory Leak Tester") |
| | 150 | self.frame.Show(true) |
| | 151 | |
| | 152 | self.exiting = FALSE; |
| | 153 | return true |
| | 154 | |
| | 155 | app = MyApp(0) # Create an instance of the application class |
| | 156 | app.MainLoop() # Tell it to start processing events |
| | 157 | |
projects / wxWidgets.git / blame_incremental