Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement platform-specific coordinate conversion functions

Browse Source 
Generic wxDC::DeviceToLogical{X|Y}() and wxDC::LogicalToDevice{X|Y}()
functions don't take into account transformations applied with
wxDC::SetTransformMatrix() so conversion results are invalid if wxDC is
transformed with both e.g. wxDC::SetUserScale() and
wxDC::SetTransformMatrix().
We need to implement functions in wxDCImpl and its platform-specific
derivates to do this conversion with taking into account all applied
transformations.

See #18916.
This commit is contained in:
Artur Wieczorek
2020-09-13 23:47:26 +02:00
parent 4ebfe0059a
commit 014bd2ae54
6 changed files with 59 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/wx/msw/dc.h
View File

@@ -86,6 +86,9 @@ public:
virtual void SetDeviceOrigin(wxCoord x, wxCoord y) wxOVERRIDE;
virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) wxOVERRIDE;
virtual wxPoint DeviceToLogical(wxCoord x, wxCoord y) const wxOVERRIDE;
virtual wxPoint LogicalToDevice(wxCoord x, wxCoord y) const wxOVERRIDE;
#if wxUSE_DC_TRANSFORM_MATRIX
virtual bool CanUseTransformMatrix() const wxOVERRIDE;
virtual bool SetTransformMatrix(const wxAffineMatrix2D& matrix) wxOVERRIDE;