Add X11 renderer.

1 files changed, 235 insertions, 0 deletions

diff --git a/lib/renderers/x11/x11.c b/lib/renderers/x11/x11.c
new file mode 100644
index 0000000..3e9ced9
--- /dev/null
+++ b/lib/renderers/x11/x11.c
@@ -0,0 +1,235 @@
+#define _DEFAULT_SOURCE
+#include "internal.h"
+#include "version.h"
+#include "x11.h"
+#include "xkb_unicode.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+
+static void
+render(const struct bm_menu *menu)
+{
+    struct x11 *x11 = menu->renderer->internal;
+
+    bm_x11_window_render(&x11->window, menu);
+    XFlush(x11->display);
+
+    XEvent ev;
+    if (XNextEvent(x11->display, &ev) || XFilterEvent(&ev, x11->window.drawable))
+        return;
+
+    switch (ev.type) {
+        case KeyPress:
+            bm_x11_window_key_press(&x11->window, &ev.xkey);
+            break;
+        case SelectionNotify:
+            // paste here
+            break;
+        case VisibilityNotify:
+            if (ev.xvisibility.state != VisibilityUnobscured) {
+                XRaiseWindow(x11->display, x11->window.drawable);
+                XFlush(x11->display);
+            }
+            break;
+    }
+}
+
+static enum bm_key
+poll_key(const struct bm_menu *menu, unsigned int *unicode)
+{
+    struct x11 *x11 = menu->renderer->internal;
+    assert(x11 && unicode);
+
+    if (x11->window.keysym == NoSymbol)
+        return BM_KEY_UNICODE;
+
+    KeySym sym = x11->window.keysym;
+    uint32_t mods = x11->window.mods;
+    *unicode = bm_x11_key_sym2unicode(sym);
+
+    x11->window.keysym = NoSymbol;
+
+    switch (sym) {
+        case XK_Up:
+            return BM_KEY_UP;
+
+        case XK_Down:
+            return BM_KEY_DOWN;
+
+        case XK_Left:
+            return BM_KEY_LEFT;
+
+        case XK_Right:
+            return BM_KEY_RIGHT;
+
+        case XK_Home:
+            return BM_KEY_HOME;
+
+        case XK_End:
+            return BM_KEY_END;
+
+        case XK_Page_Up:
+            return (mods & MOD_SHIFT ? BM_KEY_SHIFT_PAGE_UP : BM_KEY_PAGE_UP);
+
+        case XK_Page_Down:
+            return (mods & MOD_SHIFT ? BM_KEY_SHIFT_PAGE_DOWN : BM_KEY_PAGE_DOWN);
+
+        case XK_BackSpace:
+            return BM_KEY_BACKSPACE;
+
+        case XK_Delete:
+            return (mods & MOD_SHIFT ? BM_KEY_LINE_DELETE_LEFT : BM_KEY_DELETE);
+
+        case XK_Tab:
+            return (mods & MOD_SHIFT ? BM_KEY_SHIFT_TAB : BM_KEY_TAB);
+
+        case XK_ISO_Left_Tab:
+            return BM_KEY_SHIFT_TAB;
+
+        case XK_Insert:
+            return BM_KEY_SHIFT_RETURN;
+
+        case XK_Return:
+            return (mods & MOD_CTRL ? BM_KEY_CONTROL_RETURN : (mods & MOD_SHIFT ? BM_KEY_SHIFT_RETURN : BM_KEY_RETURN));
+
+        case XK_Escape:
+            return BM_KEY_ESCAPE;
+
+        case XK_p:
+            return (mods & MOD_CTRL ? BM_KEY_UP : BM_KEY_UNICODE);
+
+        case XK_n:
+            return (mods & MOD_CTRL ? BM_KEY_DOWN : BM_KEY_UNICODE);
+
+        case XK_l:
+            return (mods & MOD_CTRL ? BM_KEY_LEFT : BM_KEY_UNICODE);
+
+        case XK_f:
+            return (mods & MOD_CTRL ? BM_KEY_RIGHT : BM_KEY_UNICODE);
+
+        case XK_a:
+            return (mods & MOD_CTRL ? BM_KEY_HOME : BM_KEY_UNICODE);
+
+        case XK_e:
+            return (mods & MOD_CTRL ? BM_KEY_END : BM_KEY_UNICODE);
+
+        case XK_h:
+            return (mods & MOD_CTRL ? BM_KEY_BACKSPACE : BM_KEY_UNICODE);
+
+        case XK_u:
+            return (mods & MOD_CTRL ? BM_KEY_LINE_DELETE_LEFT : BM_KEY_UNICODE);
+
+        case XK_k:
+            return (mods & MOD_CTRL ? BM_KEY_LINE_DELETE_RIGHT : BM_KEY_UNICODE);
+
+        case XK_w:
+            return (mods & MOD_CTRL ? BM_KEY_WORD_DELETE : BM_KEY_UNICODE);
+
+        default: break;
+    }
+
+    return BM_KEY_UNICODE;
+}
+
+static uint32_t
+get_displayed_count(const struct bm_menu *menu)
+{
+    struct x11 *x11 = menu->renderer->internal;
+    assert(x11);
+    return x11->window.displayed;
+}
+
+static void
+set_bottom(const struct bm_menu *menu, bool bottom)
+{
+    struct x11 *x11 = menu->renderer->internal;
+    assert(x11);
+    bm_x11_window_set_bottom(&x11->window, bottom);
+}
+
+static void
+set_monitor(const struct bm_menu *menu, uint32_t monitor)
+{
+    struct x11 *x11 = menu->renderer->internal;
+    assert(x11);
+    bm_x11_window_set_monitor(&x11->window, monitor);
+}
+
+static void
+grab_keyboard(const struct bm_menu *menu, bool grab)
+{
+    struct x11 *x11 = menu->renderer->internal;
+    assert(x11);
+
+    if (grab) {
+        for (uint32_t i = 0; i < 1000; ++i) {
+            if (XGrabKeyboard(x11->display, DefaultRootWindow(x11->display), True, GrabModeAsync, GrabModeAsync, CurrentTime) == GrabSuccess)
+                return;
+            usleep(1000);
+        }
+
+        fprintf(stderr, "x11: cannot grab keyboard\n");
+    } else {
+        XUngrabKeyboard(x11->display, CurrentTime);
+    }
+}
+
+static void
+destructor(struct bm_menu *menu)
+{
+    struct x11 *x11 = menu->renderer->internal;
+
+    if (!x11)
+        return;
+
+    bm_x11_window_destroy(&x11->window);
+
+    if (x11->display)
+        XCloseDisplay(x11->display);
+
+    free(x11);
+    menu->renderer->internal = NULL;
+}
+
+static bool
+constructor(struct bm_menu *menu)
+{
+    struct x11 *x11;
+    if (!(menu->renderer->internal = x11 = calloc(1, sizeof(struct x11))))
+        goto fail;
+
+    if (!(x11->display = XOpenDisplay(NULL)))
+        goto fail;
+
+    if (!bm_x11_window_create(&x11->window, x11->display))
+        goto fail;
+
+    x11->window.bottom = menu->bottom;
+    bm_x11_window_set_monitor(&x11->window, menu->monitor);
+
+    x11->window.notify.render = bm_cairo_paint;
+    return true;
+
+fail:
+    destructor(menu);
+    return false;
+}
+
+extern const char*
+register_renderer(struct render_api *api)
+{
+    api->constructor = constructor;
+    api->destructor = destructor;
+    api->get_displayed_count = get_displayed_count;
+    api->poll_key = poll_key;
+    api->render = render;
+    api->set_bottom = set_bottom;
+    api->set_monitor = set_monitor;
+    api->grab_keyboard = grab_keyboard;
+    api->prioritory = BM_PRIO_GUI;
+    api->version = BM_PLUGIN_VERSION;
+    return "x11";
+}
+
+/* vim: set ts=8 sw=4 tw=0 :*/