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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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2
include/wx/dcgraph.h
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@@ -124,6 +124,8 @@ public:
// coordinates conversions and transforms
virtual wxPoint DeviceToLogical(wxCoord x, wxCoord y) const wxOVERRIDE;
virtual wxPoint LogicalToDevice(wxCoord x, wxCoord y) const wxOVERRIDE;
virtual wxSize DeviceToLogicalRel(int x, int y) const wxOVERRIDE;
virtual wxSize LogicalToDeviceRel(int x, int y) const wxOVERRIDE;
// the true implementations
virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,