* Adds a new callback and settings in gdiGfxSurface to allow updating
a window directly from surface bitmap data
* Adds new BOOL in gdiGfxSurface windowMapped and
handleInUpdateSurfaceArea to control where surface data update is
being handled
Since the EGFX Reset Graphics PDU seems to be optional,
the graphicsReset variable (which is updated in that PDU's handler)
should be removed from the rdp_gdi struct with the next change
in public headers (as in freerdp v3).
There are still some clients that expect and check it and therefore
we keep it for now, initialized with TRUE.
sdas
To fix#4825 GFX functions must now aquire a lock before accessing surfaces.
This prevents simultaneous update of internal data by client and gfx threads.
Also enforce return value checks, where not already done.
The coordinates from RDP ROP commands do not (always) have
0,0 as the origin of the drawing operation.
Adjust the coordinates to our local coordinate system.
The H264 context is surface specific, so in multi-monitor (with multiple surfaces)
the decoding was failing. This patch fixes that by introducing a surface specific
h264 context.
When a hdc is created no initial or default objects are created
therefore can the first call of gdi_SelectObject return NULL.
Because of this checking the return value of gdi_SelectObject failed
for newly create hdc causing errors (disconnects).
Since all types of HGDIOBJECT are handled and the return value of
gdi_SelectObject isn't used the recently added checks were removed
again.
* top level GDI functions return 0 on error and != 0 otherwise but the
low level functions (16bpp.c, 8bpp.c 32bpp.c) which are called did it
exactly the other way around. Those were adapted.
* change gdi_InvalidateRegion to BOOL and check calls where appropriate
* integrate comments from pull request
