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X11: Fix implementation of work area retrieval

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This intersects the global work area from _NET_WORKAREA with the monitor
viewport.  The monitor viewport falls back to the core display
dimensions where working RandR is missing.  The _NET_WORKAREA query is
now checked for success.  The _NET_WORKAREA extent array is now indexed
by _NET_CURRENT_DESKTOP.  The _NET_WORKAREA atom is now checked for
availability.

Related to #1322.
This commit is contained in:
Camilla Löwy 2019-02-25 14:10:45 +01:00
parent 4f14c1e776
commit 3a2a97f15d
3 changed files with 87 additions and 13 deletions
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2
src/x11_init.c
View File

@ -448,6 +448,8 @@ static void detectEWMH(void)
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE_NORMAL");
_glfw.x11.NET_WORKAREA =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WORKAREA");
_glfw.x11.NET_CURRENT_DESKTOP =
getSupportedAtom(supportedAtoms, atomCount, "_NET_CURRENT_DESKTOP");
_glfw.x11.NET_ACTIVE_WINDOW =
getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW");
_glfw.x11.NET_FRAME_EXTENTS =

97
src/x11_monitor.c
View File

@ -344,25 +344,96 @@ void _glfwPlatformGetMonitorContentScale(_GLFWmonitor* monitor,
void _glfwPlatformGetMonitorWorkarea(_GLFWmonitor* monitor, int* xpos, int* ypos, int* width, int* height)
{
int areaX = 0, areaY = 0, areaWidth = 0, areaHeight = 0;
if (_glfw.x11.randr.available && !_glfw.x11.randr.monitorBroken)
{
Atom* extents = NULL;
XRRScreenResources* sr;
XRRCrtcInfo* ci;
_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.NET_WORKAREA, XA_CARDINAL,
(unsigned char**) &extents);
sr = XRRGetScreenResourcesCurrent(_glfw.x11.display, _glfw.x11.root);
ci = XRRGetCrtcInfo(_glfw.x11.display, sr, monitor->x11.crtc);
if (xpos)
*xpos = extents[0];
if (ypos)
*ypos = extents[1];
if (width)
*width = extents[2];
if (height)
*height = extents[3];
areaX = ci->x;
areaY = ci->y;
XFree(extents);
const XRRModeInfo* mi = getModeInfo(sr, ci->mode);
if (ci->rotation == RR_Rotate_90 || ci->rotation == RR_Rotate_270)
{
areaWidth = mi->height;
areaHeight = mi->width;
}
else
{
areaWidth = mi->width;
areaHeight = mi->height;
}
XRRFreeCrtcInfo(ci);
XRRFreeScreenResources(sr);
}
else
{
areaWidth = DisplayWidth(_glfw.x11.display, _glfw.x11.screen);
areaHeight = DisplayHeight(_glfw.x11.display, _glfw.x11.screen);
}
if (_glfw.x11.NET_WORKAREA && _glfw.x11.NET_CURRENT_DESKTOP)
{
Atom* extents = NULL;
Atom* desktop = NULL;
const unsigned long extentCount =
_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.NET_WORKAREA,
XA_CARDINAL,
(unsigned char**) &extents);
if (_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.NET_CURRENT_DESKTOP,
XA_CARDINAL,
(unsigned char**) &desktop) > 0)
{
if (extentCount >= 4 && *desktop < extentCount / 4)
{
const int globalX = extents[*desktop * 4 + 0];
const int globalY = extents[*desktop * 4 + 1];
const int globalWidth = extents[*desktop * 4 + 2];
const int globalHeight = extents[*desktop * 4 + 3];
if (areaX < globalX)
{
areaWidth -= globalX - areaX;
areaX = globalX;
}
if (areaY < globalY)
{
areaHeight -= globalY - areaY;
areaY = globalY;
}
if (areaX + areaWidth > globalX + globalWidth)
areaWidth = globalX - areaX + globalWidth;
if (areaY + areaHeight > globalY + globalHeight)
areaHeight = globalY - areaY + globalHeight;
}
}
if (extents)
XFree(extents);
if (desktop)
XFree(desktop);
}
if (xpos)
*xpos = areaX;
if (ypos)
*ypos = areaY;
if (width)
*width = areaWidth;
if (height)
*height = areaHeight;
}
GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* count)

1
src/x11_platform.h
View File

@ -260,6 +260,7 @@ typedef struct _GLFWlibraryX11
Atom NET_WM_WINDOW_OPACITY;
Atom NET_WM_CM_Sx;
Atom NET_WORKAREA;
Atom NET_CURRENT_DESKTOP;
Atom NET_ACTIVE_WINDOW;
Atom NET_FRAME_EXTENTS;
Atom NET_REQUEST_FRAME_EXTENTS;