When wxGraphicsContext is created from wxWindowDC then transformation settings already applied to the source wxWindowDC are not passed directly to the Cairo context through underlying GdkDrawable and therefore they need to be passed to the context explicitly.
These inherited transformation settings should be used only internally by wxGraphicsContext object and shouldn't be exposed through e.g. GetTransform() function and hence they are stored separately (in a dedicated variable) and "subtracted" from actual transformation settings for reporting purposes.
See #17491.
When wxGraphicsContext is created from wxMemoryDC then transformation settings applied to the source wxMemoryDC are not passed directly to the Cairo context through underlying GdkDrawable and therefore they need to be passed to the context explicitly.
These inherited transformations settings should be used only internally by wxGraphicsContext object and shouldn't be exposed through e.g. GetTransform() function and hence they are stored separately (in a dedicated variable) and "subtracted" from actual transformation settings for reporting purposes.
Closes#17482.
When wxGraphicsContext is created from wxMemoryDC with selected 32bppp wxBitmap then transformation settings applied to the source wxMemoryDC are not passed directly to the Cairo context through underlying HDC and therefore they need to be passed to the context explicitly.
These inherited transformations settings should be used only internally by wxGraphicsContext object and shouldn't be exposed through e.g. GetTransform() function and hence they are stored separately (in a dedicated variable) and "subtracted" from actual transformation settings for reporting purposes.
See #17482.
When Cairo surface is created from 32bpp wxBitmap then there is necessary to provide a location of its bit values to cairo_image_surface_create_for_data function and hence bitmap selected into wxMemoryDC has to be converted to DIB, if it is not a DIB already.
Moreover, if 32bpp bitmap doesn't contain real transparency data (is 0RGB bitmap) then its alpha values have to be corrected and set to wxALPHA_OPAQUE value (255).
Closes#17469.
cairo_surface_create_similar_image() introduced by the changes of
d6afb66388 is only available in 1.12 and later,
check for it being available and fall back to cairo_surface_create_similar()
with older versions.
This should fix Travis CI builds.
Fixed creating wxCairoBitmapData from 32bpp wxBitmap (with and without alpha channel). This also fixes wxCairoRenderer::CreateBitmap method.
1. 32bpp bitmap can represent under MSW either ARGB or RGB bitmap so there is necessary to examine its real contents with wxBitmap::HasAlpha function.
2. ARGB bitmaps are premultiplied and there is not necessary to premultiply them again.
Input void* parameter of wxCairoRenderer::CreateContextFromNativeContext can represent either DC handle or pointer to cairo_t object. It can be checked if it is a real HDC or not and proper wxCairoContext ctor can be invoked.
Closes#16991.
For a typical scale factor of 2, there won't be any odd-width lines,
and for any factor greater than 1.0, it won't be doing what was intended,
so just don't do it. See #17375
Don't use an uninitialized pointer in wxCairoContext ctor from wxPrinterDC in
wxGTK if retrieving Cairo context of the DC failed, set m_context to NULL in
this case (not sure if this is still not going to crash when used in
cairo_translate() below though).
Initialize m_buffer to avoid crashes when deleting it in Cairo-based
wxGraphicsContext implementation for bitmaps created from the native ones.
Don't leave the bitmap size uninitialized neither, this might not result in
crashes, but is definitely wrong as well.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77718 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This merges in the latest sources from GSoC 2014 wxQt project with just a few
minor corrections, mostly undoing wrong changes to common files in that branch
(results of a previous bad merge?) and getting rid of whitespace-only changes.
Also remove debug logging from wxGrid.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77455 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Allow the code to determine which underlying technology is used for
implementing wxGraphics API. This is needed by the unit tests to account for
the known differences between platforms and may be useful in other cases.
Closes#16154.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76380 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
It was assumed that all callers were going to unref the cairo_t, but that is not
true, so callers that are going to unref it should ref it themselves.
See #15455
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74746 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This keyword is not expanded by Git which means it's not replaced with the
correct revision value in the releases made using git-based scripts and it's
confusing to have lines with unexpanded "$Id$" in the released files. As
expanding them with Git is not that simple (it could be done with git archive
and export-subst attribute) and there are not many benefits in having them in
the first place, just remove all these lines.
If nothing else, this will make an eventual transition to Git simpler.
Closes#14487.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Remove unused Unload(), wxCairoCleanUp(), m_loaded and gCairoRenderer, and redundant Load()
and EnsureIsLoaded(). Just call wxCairoInit() directly, and for GTK do nothing at all.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73098 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Refactor the pen/brushes classes to introduce a common base class for them
containing their colour and hatch pattern and stipple bitmap, if any.
And actually create the hatched pattern and use it.
Closes#11981.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71906 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
