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Implement platform-specific coordinate conversion functions

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Generic wxDC::DeviceToLogicalRel{X|Y}() and wxDC::LogicalToDeviceRel{X|Y}()
functions don't take into account scaling applied with
wxDC::SetTransformMatrix().
We need to implement in wxDCImpl and its platform-specific derivates
new conversion functions that take all applied transformations into account.

See #18923.
This commit is contained in:
Artur Wieczorek
2020-09-27 10:38:08 +02:00
parent 6fac6c0b35
commit 2c3c841719
6 changed files with 54 additions and 0 deletions
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16
src/common/dcgraph.cpp
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@@ -613,6 +613,22 @@ wxPoint wxGCDCImpl::LogicalToDevice(wxCoord x, wxCoord y) const
return wxPoint(wxRound(px), wxRound(py));
}
wxSize wxGCDCImpl::DeviceToLogicalRel(int x, int y) const
{
wxDouble dx = x;
wxDouble dy = y;
m_matrixCurrentInv.TransformDistance(&dx, &dy);
return wxSize(wxRound(dx), wxRound(dy));
}
wxSize wxGCDCImpl::LogicalToDeviceRel(int x, int y) const
{
wxDouble dx = x;
wxDouble dy = y;
m_matrixCurrent.TransformDistance(&dx, &dy);
return wxSize(wxRound(dx), wxRound(dy));
}
bool wxGCDCImpl::DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
const wxColour& WXUNUSED(col),
wxFloodFillStyle WXUNUSED(style))