Add configure option to minimize xcb runtime dependencies

Some of the xcb- libraries we depend upon are not (yet) common across
distributions. This is problematic for binaries that should be working
on different distributions. The patch mitigates this by:

Adding the files from
  libxcb-proto (version 0.1.6), compiled with libxcb-1.5
  xcb-util (version 0.3.9)
  xcb-util-image (version 0.3.9)
  xcb-util-keysyms (version 0.3.9)
  xcb-util-renderutil (version 0.3.8)
  xcb-util-wm (version 0.3.9)

from xcb.freedesktop.org/dist to src/3rdparty/xcb.

Adding a configure option '-qt-xcb' to use the sources instead of
linking to the respective runtime libraries.

Task-number: QTBUG-27803
Change-Id: I6ea87daa382871b2b9072a601511523fa0b9f44b
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/src/3rdparty/xcb/include/xcb/xcb_keysyms.h b/src/3rdparty/xcb/include/xcb/xcb_keysyms.h
new file mode 100644
index 0000000000..9d34a50ad1
--- /dev/null
+++ b/src/3rdparty/xcb/include/xcb/xcb_keysyms.h
@@ -0,0 +1,71 @@
+#ifndef __XCB_KEYSYMS_H__
+#define __XCB_KEYSYMS_H__
+
+#include <xcb/xcb.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+typedef struct _XCBKeySymbols xcb_key_symbols_t;
+
+xcb_key_symbols_t *xcb_key_symbols_alloc        (xcb_connection_t         *c);
+
+void           xcb_key_symbols_free         (xcb_key_symbols_t         *syms);
+
+xcb_keysym_t      xcb_key_symbols_get_keysym    (xcb_key_symbols_t         *syms,
+					  xcb_keycode_t             keycode,
+					  int                    col);
+
+/**
+ * @brief Get the keycodes attached to a keysyms.
+ * There can be several value, so what is returned is an array of keycode
+ * terminated by XCB_NO_SYMBOL. You are responsible to free it.
+ * Be aware that this function can be slow. It will convert all
+ * combinations of all available keycodes to keysyms to find the ones that
+ * match.
+ * @param syms Key symbols.
+ * @param keysym The keysym to look for.
+ * @return A XCB_NO_SYMBOL terminated array of keycode, or NULL if nothing is found.
+ */
+xcb_keycode_t * xcb_key_symbols_get_keycode(xcb_key_symbols_t *syms,
+                                            xcb_keysym_t keysym);
+
+xcb_keysym_t      xcb_key_press_lookup_keysym   (xcb_key_symbols_t         *syms,
+					  xcb_key_press_event_t      *event,
+					  int                    col);
+
+xcb_keysym_t      xcb_key_release_lookup_keysym (xcb_key_symbols_t         *syms,
+					  xcb_key_release_event_t    *event,
+					  int                    col);
+
+int            xcb_refresh_keyboard_mapping (xcb_key_symbols_t         *syms,
+					  xcb_mapping_notify_event_t *event);
+
+/* TODO:  need XLookupString equivalent */
+
+/* Tests for classes of symbols */
+
+int xcb_is_keypad_key        (xcb_keysym_t keysym);
+
+int xcb_is_private_keypad_key (xcb_keysym_t keysym);
+
+int xcb_is_cursor_key        (xcb_keysym_t keysym);
+
+int xcb_is_pf_key            (xcb_keysym_t keysym);
+
+int xcb_is_function_key      (xcb_keysym_t keysym);
+
+int xcb_is_misc_function_key  (xcb_keysym_t keysym);
+
+int xcb_is_modifier_key      (xcb_keysym_t keysym);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* __XCB_KEYSYMS_H__ */