From 0b03bdb56667fc3efcbf2624145409436cac9b78 Mon Sep 17 00:00:00 2001
From: koekeishiya <aasvi93@hotmail.com>
Date: Fri, 20 Jul 2018 19:26:15 +0200
Subject: #44 synthesize keypress; skhd -k "alt - h"

---
 src/synthesize.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/synthesize.c

(limited to 'src/synthesize.c')

diff --git a/src/synthesize.c b/src/synthesize.c
new file mode 100644
index 0000000..0084604
--- /dev/null
+++ b/src/synthesize.c
@@ -0,0 +1,92 @@
+#include <Carbon/Carbon.h>
+
+#include "synthesize.h"
+#include "locale.h"
+#include "parse.h"
+#include "hotkey.h"
+
+#define internal static
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated"
+
+internal inline void
+create_and_post_keyevent(uint16_t key, bool pressed)
+{
+    CGPostKeyboardEvent((CGCharCode)0, (CGKeyCode)key, pressed);
+}
+
+internal inline void
+synthesize_modifiers(struct hotkey *hotkey, bool pressed)
+{
+    if (has_flags(hotkey, Hotkey_Flag_Alt)) {
+        create_and_post_keyevent(Modifier_Keycode_Alt, pressed);
+    }
+
+    if (has_flags(hotkey, Hotkey_Flag_Shift)) {
+        create_and_post_keyevent(Modifier_Keycode_Shift, pressed);
+    }
+
+    if (has_flags(hotkey, Hotkey_Flag_Cmd)) {
+        create_and_post_keyevent(Modifier_Keycode_Cmd, pressed);
+    }
+
+    if (has_flags(hotkey, Hotkey_Flag_Control)) {
+        create_and_post_keyevent(Modifier_Keycode_Ctrl, pressed);
+    }
+
+    if (has_flags(hotkey, Hotkey_Flag_Fn)) {
+        create_and_post_keyevent(Modifier_Keycode_Fn, pressed);
+    }
+}
+
+void synthesize_key(char *key_string)
+{
+    if (!initialize_keycode_map()) return;
+    struct parser parser;
+    parser_init_text(&parser, key_string);
+
+    close(1);
+    close(2);
+
+    struct hotkey *hotkey = parse_keypress(&parser);
+    if (!hotkey) return;
+
+    CGSetLocalEventsSuppressionInterval(0.0f);
+    CGEnableEventStateCombining(false);
+
+    synthesize_modifiers(hotkey, true);
+    create_and_post_keyevent(hotkey->key, true);
+
+    create_and_post_keyevent(hotkey->key, false);
+    synthesize_modifiers(hotkey, false);
+}
+
+void synthesize_text(char *text)
+{
+    CFStringRef text_ref = CFStringCreateWithCString(NULL, text, kCFStringEncodingUTF8);
+    CFIndex text_length = CFStringGetLength(text_ref);
+
+    CGEventRef de = CGEventCreateKeyboardEvent(NULL, 0, true);
+    CGEventRef ue = CGEventCreateKeyboardEvent(NULL, 0, false);
+
+    CGEventSetFlags(de, 0);
+    CGEventSetFlags(ue, 0);
+
+    UniChar c;
+    for (CFIndex i = 0; i < text_length; ++i)
+    {
+        c = CFStringGetCharacterAtIndex(text_ref, i);
+        CGEventKeyboardSetUnicodeString(de, 1, &c);
+        CGEventPost(kCGAnnotatedSessionEventTap, de);
+        usleep(1000);
+        CGEventKeyboardSetUnicodeString(ue, 1, &c);
+        CGEventPost(kCGAnnotatedSessionEventTap, ue);
+    }
+
+    CFRelease(ue);
+    CFRelease(de);
+    CFRelease(text_ref);
+}
+
+#pragma clang diagnostic pop
-- 
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