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using common implementation avoiding out-of-order redraws

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77031 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor 2014-08-09 16:14:22 +00:00
parent 780b9d119e
commit 50d539499b
1 changed files with 25 additions and 19 deletions
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44
demos/life/life.cpp
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@ -27,6 +27,7 @@
#include "wx/wfstream.h"
#include "wx/filedlg.h"
#include "wx/stockitem.h"
#include "wx/dcbuffer.h"
#include "life.h"
#include "game.h"
@ -436,11 +437,20 @@ void LifeFrame::OnMenu(wxCommandEvent& event)
m_running = true;
m_topspeed = true;
UpdateUI();
const long YIELD_INTERVAL = 1000 / 30;
wxMilliClock_t lastyield = 0, now;
while (m_running && m_topspeed)
{
OnStep();
wxYield();
if ( (now=wxGetLocalTimeMillis()) - lastyield > YIELD_INTERVAL)
{
wxYield();
lastyield = now;
}
}
break;
}
}
@ -589,12 +599,13 @@ void LifeFrame::OnStop()
void LifeFrame::OnStep()
{
if (m_life->NextTic())
{
m_tics++;
m_canvas->Refresh();
UpdateInfoText();
}
else
OnStop();
m_canvas->DrawChanged();
UpdateInfoText();
}
@ -791,50 +802,45 @@ void LifeCanvas::DrawCell(wxInt32 i, wxInt32 j, wxDC &dc)
}
}
// draw all changed cells
// draw all changed cells, currently not in use
void LifeCanvas::DrawChanged()
{
#ifdef __WXOSX__
// we should not do out of band redraws on OSX, let things happen in the event loop
Refresh();
#else
wxClientDC dc(this);
size_t ncells;
LifeCell *cells;
bool done = false;
m_life->BeginFind(m_viewportX,
m_viewportY,
m_viewportX + m_viewportW,
m_viewportY + m_viewportH,
true);
if (m_cellsize == 1)
{
dc.SetPen(*wxBLACK_PEN);
dc.SetPen(*wxWHITE_PEN);
}
else
{
dc.SetPen(*wxTRANSPARENT_PEN);
dc.SetBrush(*wxBLACK_BRUSH);
dc.SetBrush(*wxWHITE_BRUSH);
}
dc.SetLogicalFunction(wxINVERT);
dc.SetLogicalFunction(wxXOR);
while (!done)
{
done = m_life->FindMore(&cells, &ncells);
for (size_t m = 0; m < ncells; m++)
DrawCell(cells[m].i, cells[m].j, dc);
}
#endif
}
// event handlers
void LifeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc(this);
wxAutoBufferedPaintDC dc(this);
wxRect rect = GetUpdateRegion().GetBox();
wxCoord x, y, w, h;
wxInt32 i0, j0, i1, j1;