testcases

1 files changed, 81 insertions, 0 deletions

diff --git a/decorations.c b/decorations.c
new file mode 100644
index 0000000..cd3e711
--- /dev/null
+++ b/decorations.c
@@ -0,0 +1,81 @@
+/* from https://bugs.kde.org/show_bug.cgi?id=201523 */
+
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+/* Compile with "gcc -o decorations -Wall decorations.c -lX11" */
+
+/* Set the decorations part of a window's _MOTIF_WM_HINTS property to
+ * enable or disable window decorations. */
+static void SetMotifDecorationsHint(
+    Display* display, Window win, int show_decorations) {
+  fprintf(stderr, "Setting hint to %s decorations on 0x%x\n",
+          (show_decorations ? "show" : "hide"), win);
+  int values[3] = {
+    1 << 1,  /* flags */
+    0,       /* functions */
+    show_decorations
+  };
+  Atom atom = XInternAtom(display, "_MOTIF_WM_HINTS", False);
+  XChangeProperty(
+      display,
+      win,
+      atom,  /* property */
+      atom,  /* type */
+      32,    /* format */
+      PropModeReplace,
+      (unsigned char*) values,
+      3);    /* nelements */
+}
+
+int main(int argc, char** argv) {
+  if (argc != 2 || strcmp(argv[1], "-h") == 0) {
+    fprintf(stderr, "Usage: %s [show_decorations]\n", argv[0]);
+    return 1;
+  }
+
+  Display* display = XOpenDisplay(NULL);
+  if (!display) {
+    fprintf(stderr, "Couldn't open display\n");
+    return 1;
+  }
+  int screen = DefaultScreen(display);
+
+  const int width = 300, height = 200;
+
+  unsigned long black = BlackPixel(display, screen);
+  unsigned long white = WhitePixel(display, screen);
+
+  Window win = XCreateSimpleWindow(display,
+                                   RootWindow(display, screen),
+                                   0,       /* x */
+                                   0,       /* y */
+                                   width,
+                                   height,
+                                   0,       /* border_width */
+                                   black,   /* border */
+                                   white);  /* background */
+
+  int showing_decorations = (strcmp(argv[1], "0") != 0);
+  SetMotifDecorationsHint(display, win, showing_decorations);
+
+  XSelectInput(display, win, ButtonPressMask);
+  XMapWindow(display, win);
+
+  while (1) {
+    XEvent event;
+    XNextEvent(display, &event);
+
+    if (event.type == ButtonPress) {
+      XButtonEvent be = event.xbutton;
+      if (be.button == 2) {
+        showing_decorations = !showing_decorations;
+        SetMotifDecorationsHint(display, win, showing_decorations);
+      }
+    }
+  }
+
+  return 0;
+}