key_state.ch, and command conflicts resolved

3 files changed, 76 insertions, 32 deletions

diff --git a/sway/commands.c b/sway/commands.c
index f3553b03..66c05a0c 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -76,6 +76,18 @@ static bool checkarg(int argc, char *name, enum expected_args type, int val) {
 	return false;
 }
 
+static int bindsym_sort(const void *_lbind, const void *_rbind) {
+	const struct sway_binding *lbind = *(void **)_lbind;
+	const struct sway_binding *rbind = *(void **)_rbind;
+	unsigned int lmod = 0, rmod = 0, i;
+
+	//Count how any modifiers are pressed
+	for (i = 0; i < 8 * sizeof(lbind->modifiers); ++i) {
+		lmod += lbind->modifiers & 1 << i;
+		rmod += rbind->modifiers & 1 << i;
+	}
+	return (rbind->keys->length + rmod) - (lbind->keys->length + lmod);
+}
 
 static bool cmd_bindsym(struct sway_config *config, int argc, char **argv) {
 	if (!checkarg(argc, "bindsym", EXPECTED_MORE_THAN, 1)) {
@@ -118,7 +130,10 @@ static bool cmd_bindsym(struct sway_config *config, int argc, char **argv) {
 	list_free(split);
 
 	// TODO: Check if there are other commands with this key binding
-	list_add(config->current_mode->bindings, binding);
+	struct sway_mode *mode = config->current_mode;
+	list_add(mode->bindings, binding);
+	qsort(mode->bindings->items, mode->bindings->length,
+			sizeof(mode->bindings->items[0]), bindsym_sort);
 
 	sway_log(L_DEBUG, "bindsym - Bound %s to command %s", argv[0], binding->command);
 	return true;
diff --git a/sway/handlers.c b/sway/handlers.c
index 63db972e..c9d7c7ac 100644
--- a/sway/handlers.c
+++ b/sway/handlers.c
@@ -13,9 +13,7 @@
 #include "workspace.h"
 #include "container.h"
 #include "focus.h"
-
-#define KEY_CACHE_SIZE 32
-uint32_t keys_pressed[KEY_CACHE_SIZE];
+#include "key_state.h"
 
 static struct wlc_origin mouse_origin;
 
@@ -327,7 +325,6 @@ static bool handle_key(wlc_handle view, uint32_t time, const struct wlc_modifier
 	if (locked_view_focus && state == WLC_KEY_STATE_PRESSED) {
 		return false;
 	}
-	bool cmd_success = false;
 
 	// Revert floating container back to original position on keypress
 	if (state == WLC_KEY_STATE_PRESSED && (dragging || resizing)) {
@@ -356,16 +353,10 @@ static bool handle_key(wlc_handle view, uint32_t time, const struct wlc_modifier
 		}
 	}
 
-	int total = 0;
-	for (i = 0; i < KEY_CACHE_SIZE && !mod; ++i) {
-		total += keys_pressed[i] != 0;
-		if (state == WLC_KEY_STATE_PRESSED && keys_pressed[i] == 0) {
-			keys_pressed[i] = sym;
-			break;
-		} else if (state == WLC_KEY_STATE_RELEASED && keys_pressed[i] == sym) {
-			keys_pressed[i] = 0;
-			break;
-		}
+	if (state == WLC_KEY_STATE_PRESSED) {
+		press_key(sym);
+	} else { // WLC_KEY_STATE_RELEASED
+		release_key(sym);
 	}
 
 	// TODO: reminder to check conflicts with mod+q+a versus mod+q
@@ -376,32 +367,22 @@ static bool handle_key(wlc_handle view, uint32_t time, const struct wlc_modifier
 			bool match;
 			int j;
 			for (j = 0; j < binding->keys->length; ++j) {
-				match = false;
 				xkb_keysym_t *key = binding->keys->items[j];
-				int k;
-				for (k = 0; k < KEY_CACHE_SIZE; ++k) {
-					if (keys_pressed[k] == *key) {
-						match = true;
-						break;
-					}
-				}
-				if (match == false) {
+				if ((match = check_key(*key)) == false) {
 					break;
 				}
 			}
-
 			if (match) {
-				// Remove matched keys from keys_pressed
 				if (state == WLC_KEY_STATE_PRESSED) {
 					handle_command(config, binding->command);
-					cmd_success = true;
+					return true;
 				} else if (state == WLC_KEY_STATE_RELEASED) {
 					// TODO: --released
 				}
 			}
 		}
 	}
-	return cmd_success;
+	return false;
 }
 
 static bool handle_pointer_motion(wlc_handle handle, uint32_t time, const struct wlc_origin *origin) {
@@ -590,10 +571,6 @@ static void handle_wlc_ready(void) {
 	}
 	free_flat_list(config->cmd_queue);
 	config->active = true;
-
-	for (i = 0; i < KEY_CACHE_SIZE; ++i) {
-		keys_pressed[i] = 0;
-	}
 }
 
 
diff --git a/sway/key_state.c b/sway/key_state.c
new file mode 100644
index 00000000..76561dbc
--- /dev/null
+++ b/sway/key_state.c
@@ -0,0 +1,52 @@
+#include <string.h>
+#include <stdbool.h>
+#include <ctype.h>
+
+#include "key_state.h"
+
+enum { KEY_STATE_MAX_LENGTH = 64 };
+
+static keycode key_state_array[KEY_STATE_MAX_LENGTH];
+static uint8_t key_state_length = 0;
+
+static uint8_t find_key(keycode key)
+{
+	int i;
+	for (i = 0; i < key_state_length; ++i)
+	{
+		if (key_state_array[i] == key)
+		{
+			break;
+		}
+	}
+	return i;
+}
+
+bool check_key(keycode key)
+{
+	return find_key(key) < key_state_length;
+}
+
+void press_key(keycode key)
+{
+	// Check if key exists
+	if (!check_key(key))
+	{
+		// Check that we dont exceed buffer length
+		if (key_state_length < KEY_STATE_MAX_LENGTH) {
+			key_state_array[key_state_length++] = key;
+		}
+	}
+}
+
+void release_key(keycode key)
+{
+	uint8_t index = find_key(key);
+	if (index < key_state_length)
+	{
+		//shift it over and remove key
+		memmove(&key_state_array[index],
+				&key_state_array[index + 1],
+				sizeof(*key_state_array) * (--key_state_length - index));
+	}
+}