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Add glfwDragWindow

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This is the initial implementation of glfwDragWindow, with support for
X11. The function glfwDragWindow requires only the target window to be
dragged. To make the function easier and more portable, the position of
the window and of the cursor are grabbed internally, so the end-user do
not need to pass them manually.

The example 'simple.c' was updated to include this functionality when
clicking on the client area of the window.
This commit is contained in:
Felipe Ferreira da Silva
2017-04-05 22:14:09 -03:00
committed by Camilla Löwy
parent 5b7281bd41
commit a4c76fbeed
11 changed files with 80 additions and 0 deletions
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src/x11_window.c
+23
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@@ -43,6 +43,7 @@
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
#define _NET_WM_MOVERESIZE_MOVE 8
// Additional mouse button names for XButtonEvent
#define Button6 6
@@ -2143,6 +2144,28 @@ void _glfwPlatformFocusWindow(_GLFWwindow* window)
XFlush(_glfw.x11.display);
}
void _glfwPlatformDragWindow(_GLFWwindow* window)
{
int winXpos, winYpos;
double curXpos, curYpos;
XClientMessageEvent xclient;
memset(&xclient, 0, sizeof(XClientMessageEvent));
XUngrabPointer(_glfw.x11.display, 0);
XFlush(_glfw.x11.display);
_glfwPlatformGetCursorPos(window, &curXpos, &curYpos);
_glfwPlatformGetWindowPos(window, &winXpos, &winYpos);
xclient.type = ClientMessage;
xclient.window = window->x11.handle;
xclient.message_type = XInternAtom(_glfw.x11.display, "_NET_WM_MOVERESIZE", False);
xclient.format = 32;
xclient.data.l[0] = winXpos + curXpos;
xclient.data.l[1] = winYpos + curYpos;
xclient.data.l[2] = _NET_WM_MOVERESIZE_MOVE;
xclient.data.l[3] = 0;
xclient.data.l[4] = 0;
XSendEvent(_glfw.x11.display, _glfw.x11.root, False, SubstructureRedirectMask | SubstructureNotifyMask, (XEvent *)&xclient);
}
void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
_GLFWmonitor* monitor,
int xpos, int ypos,