From 166056799c20ec66cdf94124e8c8cb3ef8114c84 Mon Sep 17 00:00:00 2001
From: Michał Cichoń <michcic@gmail.com>
Date: Fri, 3 May 2019 16:57:20 +0200
Subject: Add support for hotkeys. #20

Hotkeys can be assigned to action in configuration file ex:

hk_<action_name> = g + shift + alt + ctrl
---
 src/hotkey.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 src/hotkey.c

(limited to 'src/hotkey.c')

diff --git a/src/hotkey.c b/src/hotkey.c
new file mode 100644
index 0000000..b630b88
--- /dev/null
+++ b/src/hotkey.c
@@ -0,0 +1,113 @@
+/*
+Copyright (c) 2019
+    Micha³ Cichoñ <thedmd@interia.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "hotkey.h"
+#include <stdio.h>
+#include <stdbool.h>
+#include <fcntl.h>
+#include <io.h>
+#include <windows.h>
+
+static BarHotKey_t* g_HotKeys = NULL;
+static int g_HotKeyCapacity = 0;
+static int g_HotKeyCount = 0;
+
+void BarHotKeyInit ()
+{
+}
+
+void BarHotKeyDestroy ()
+{
+}
+
+void BarHotKeyPool (BarHotKeyHandler handler, void * userData)
+{
+    MSG msg = {0};
+    while (PeekMessage(&msg, NULL, WM_HOTKEY, WM_HOTKEY, PM_REMOVE) != 0)
+    {
+        int id = (int)msg.wParam;
+        if (id < 0)
+            continue;
+
+        handler(id, userData);
+    }
+}
+
+bool BarHotKeyRegister (BarHotKey_t hk)
+{
+    UINT modifiers = 0;
+    SHORT mappedVirtualKey = VkKeyScanA(tolower(hk.key));
+    BYTE keyCode = LOBYTE(mappedVirtualKey);
+    if (keyCode == 0)
+        return false;
+
+    if (hk.mods & BAR_HK_MOD_SHIFT)
+        modifiers |= MOD_SHIFT;
+    if (hk.mods & BAR_HK_MOD_ALT)
+        modifiers |= MOD_ALT;
+    if (hk.mods & BAR_HK_MOD_CTRL)
+        modifiers |= MOD_CONTROL;
+    if (hk.mods & BAR_HK_MOD_WIN)
+        modifiers |= MOD_WIN;
+
+    modifiers |= /*MOD_NOREPEAT*/0x4000;
+
+    return RegisterHotKey(NULL, hk.id, modifiers, keyCode);
+}
+
+void BarHotKeyUnregister (int id)
+{
+    UnregisterHotKey(NULL, id);
+}
+
+bool BarHotKeyParse (BarHotKey_t* result, const char *value)
+{
+    BarHotKey_t parsed = { 0 };
+    const char* p = value;
+    size_t s = 0;
+
+    while ((s = strcspn(p, " +")) > 0)
+    {
+        if ((s == 4 && strnicmp(p, "ctrl", 4) == 0) || (s == 7 && strnicmp(p, "control", 7) == 0))
+            parsed.mods |= BAR_HK_MOD_CTRL;
+        else if ((s == 5 && strnicmp(p, "shift", 5) == 0))
+            parsed.mods |= BAR_HK_MOD_SHIFT;
+        else if ((s == 3 && strnicmp(p, "alt", 3) == 0))
+            parsed.mods |= BAR_HK_MOD_ALT;
+        else if (s == 1)
+            parsed.key = *p;
+        else
+            return false;
+
+        p += s;
+        p += strspn(p, " +");
+    }
+
+    if (parsed.key == 0)
+        return false;
+
+    result->key = parsed.key;
+    result->mods = parsed.mods;
+
+    return true;
+}
\ No newline at end of file
-- 
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