Added xmove_window test program

Author: kevinrushforth

test/xmove_window.c

@@ -0,0 +1,168 @@
+/*
+ * Simple test program to create an X Window and move it with a keyboard.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+static int xPos = 0;
+static int yPos = 0;
+
+static void
+eventLoop(Display *dpy, Window win);
+
+static Window create_window(
+    Display*            dpy,
+    XVisualInfo*        vis_info,
+    int                 x,
+    int                 y,
+    int                 width,
+    int                 height);
+
+int
+main(int argc, char **argv)
+{
+    Display *dpy;
+    XVisualInfo template;
+    XVisualInfo* vis_info;
+    Window window;
+    int nitems;
+
+    /* Open display */
+    if (!(dpy = XOpenDisplay(NULL))) {
+        fprintf(stderr, "Could not open display\n");
+        exit(1);
+    }
+
+    template.class = TrueColor;
+    template.depth = 24;
+    vis_info = XGetVisualInfo(dpy, VisualClassMask | VisualDepthMask,
+                              &template, &nitems);
+
+    if (nitems < 1 || vis_info == NULL) {
+        fprintf(stderr, "No conforming visual exists\n");
+        exit(1);
+    }
+
+    fprintf(stderr,
+        "found a %d-bit visual (visual ID = 0x%x)\n",
+        vis_info->depth,
+        (unsigned int)vis_info->visualid);
+
+    window = create_window(dpy, vis_info,
+                           10, 10, 100, 100);
+    eventLoop(dpy, window);
+}
+
+
+static void
+eventLoop(Display *dpy, Window win)
+{
+    XEvent event, next_event;
+
+    while (1) {
+        XNextEvent(dpy, &event);
+        switch(event.type) {
+        case VisibilityNotify:
+            {
+                XVisibilityEvent *xve = (XVisibilityEvent*) &event;
+                fprintf(stderr,
+                        "Visibility event: visibility = %d\n",
+                        xve->state);
+                break;
+            }
+        case Expose:
+            {
+                XExposeEvent *xee = (XExposeEvent*) &event;
+                fprintf(stderr, "Expose event: (%d, %d) %dx%d\n",
+                        xee->x, xee->y, xee->width, xee->height);
+                break;
+            }
+        case ConfigureNotify:
+            {
+                XConfigureEvent *xce = (XConfigureEvent*) &event;
+                fprintf(stderr, "ConfigureNotify event\n");
+                break;
+            }
+
+        case KeyPress:
+            {
+                int i, j;
+                char text[3];
+
+                fprintf(stderr, "KeyPress event: ");
+                i = XLookupString((XKeyEvent *)&event,
+                                  text,
+                                  sizeof(text),
+                                  NULL,
+                                  NULL);
+                if (i == 1) {
+                    fprintf(stderr, "key = 0x%x ('%c')", text[0], text[0]);
+                    switch (text[0]) {
+                        case '-':
+                            xPos -= 10;
+                            yPos -= 10;
+                            fprintf(stderr, "move to: %d, %d\n", xPos, yPos);
+                            XMoveWindow(dpy, win, xPos, yPos);
+                            break;
+
+                        case '+':
+                        case '=':
+                            xPos += 10;
+                            yPos += 10;
+                            fprintf(stderr, "move to: %d, %d\n", xPos, yPos);
+                            XMoveWindow(dpy, win, xPos, yPos);
+                            break;
+
+                        case '\033':
+                            fprintf(stderr, "\n");
+                            exit(0);
+                    }
+                }
+                fprintf(stderr, "\n");
+                break;
+            }
+        case MappingNotify:
+            XRefreshKeyboardMapping((XMappingEvent *)&event);
+            break;
+        }
+    }
+}
+
+
+static Window
+create_window(
+    Display*            dpy,
+    XVisualInfo*        vis_info,
+    int                 x,
+    int                 y,
+    int                 width,
+    int                 height)
+{
+    Window                      window;
+    XSetWindowAttributes        wattrs;
+    XEvent                      event;
+    Colormap                    cmap;
+
+    xPos = x;
+    yPos = y;
+
+    cmap = XCreateColormap(dpy, RootWindow(dpy, vis_info->screen),
+                vis_info->visual, AllocNone);
+
+    /* Create the output window.  */
+    wattrs.background_pixel = 0;
+    wattrs.border_pixel = 0;
+    wattrs.override_redirect = True;
+    wattrs.colormap = cmap;
+    wattrs.event_mask = VisibilityChangeMask | ExposureMask | StructureNotifyMask | KeyPressMask;
+    window = XCreateWindow(dpy, RootWindow(dpy, vis_info->screen),
+        x, y, width, height, 1,
+        vis_info->depth, InputOutput, vis_info->visual,
+        CWBackPixel | CWBorderPixel | CWEventMask | CWColormap, &wattrs);
+    XMapWindow(dpy, window );
+
+    return window;
+}