From 9542f8746ae691b867ed127a7897dd5e8c7f4305 Mon Sep 17 00:00:00 2001
From: Luminarys <kizunanohikari@gmail.com>
Date: Wed, 19 Aug 2015 10:52:01 -0500
Subject: [PATCH] Added in resize locking

---
 sway/handlers.c | 135 +++++++++++++++++++++++++++++-------------------
 1 file changed, 83 insertions(+), 52 deletions(-)

diff --git a/sway/handlers.c b/sway/handlers.c
index 670569cb..faade5eb 100644
--- a/sway/handlers.c
+++ b/sway/handlers.c
@@ -25,6 +25,7 @@ static bool m1_held = false;
 static bool dragging = false;
 static bool m2_held = false;
 static bool resizing = false;
+static bool lock_left, lock_right, lock_top, lock_bottom = false;
 
 static bool floating_mod_pressed(void) {
 	return key_modifiers & config->floating_mod;
@@ -368,61 +369,89 @@ static bool handle_pointer_motion(wlc_handle handle, uint32_t time, const struct
 	// Do checks to determine if proper keys are being held
 	swayc_t *view = get_focused_view(active_workspace);
 	uint32_t edge = 0;
-	if (dragging && view && view->is_floating) {
-		int dx = mouse_origin.x - prev_pos.x;
-		int dy = mouse_origin.y - prev_pos.y;
-		view->x += dx;
-		view->y += dy;
-		changed_floating = true;
-	} else if (resizing && view && view->is_floating) {
-		int dx = mouse_origin.x - prev_pos.x;
-		int dy = mouse_origin.y - prev_pos.y;
-
-		// Move and resize the view based on the dx/dy and mouse position
-		int midway_x = view->x + view->width/2;
-		int midway_y = view->y + view->height/2;
-		if (dx < 0) {
-			changed_floating = true;
-			if (mouse_origin.x > midway_x) {
-				view->width += dx;
-				edge += WLC_RESIZE_EDGE_RIGHT;
-			} else {
-				view->x += dx;
-				view->width -= dx;
-				edge += WLC_RESIZE_EDGE_LEFT;
-			}
-		} else if (dx > 0){
+	if (dragging && view) {
+		if (view->is_floating) {
+			int dx = mouse_origin.x - prev_pos.x;
+			int dy = mouse_origin.y - prev_pos.y;
+			view->x += dx;
+			view->y += dy;
 			changed_floating = true;
-			if (mouse_origin.x > midway_x) {
-				view->width += dx;
-				edge += WLC_RESIZE_EDGE_RIGHT;
-			} else {
-				view->x += dx;
-				view->width -= dx;
-				edge += WLC_RESIZE_EDGE_LEFT;
-			}
 		}
-
-		if (dy < 0) {
-			changed_floating = true;
-			if (mouse_origin.y > midway_y) {
-				view->height += dy;
-				edge += WLC_RESIZE_EDGE_BOTTOM;
-			} else {
-				view->y += dy;
-				view->height -= dy;
-				edge += WLC_RESIZE_EDGE_TOP;
+	} else if (resizing && view) {
+		if (view->is_floating) {
+			int dx = mouse_origin.x - prev_pos.x;
+			int dy = mouse_origin.y - prev_pos.y;
+			int min_sane_w = 100;
+			int min_sane_h = 60;
+
+			// Move and resize the view based on the dx/dy and mouse position
+			int midway_x = view->x + view->width/2;
+			int midway_y = view->y + view->height/2;
+			if (dx < 0) {
+				if (mouse_origin.x > midway_x && !lock_right) {
+					if (view->width > min_sane_w) {
+						lock_left = true;
+						changed_floating = true;
+						view->width += dx;
+						edge += WLC_RESIZE_EDGE_RIGHT;
+					}
+				} else if (mouse_origin.x < midway_x && !lock_left) {
+					lock_right = true;
+					changed_floating = true;
+					view->x += dx;
+					view->width -= dx;
+					edge += WLC_RESIZE_EDGE_LEFT;
+				}
+			} else if (dx > 0){
+				if (mouse_origin.x > midway_x && !lock_right) {
+					lock_left = true;
+					changed_floating = true;
+					view->width += dx;
+					edge += WLC_RESIZE_EDGE_RIGHT;
+					if (view->width > min_sane_w) {
+						lock_left = false;
+					}
+				} else if (mouse_origin.x < midway_x && !lock_left) {
+					if (view->width > min_sane_w) {
+						lock_right = true;
+						changed_floating = true;
+						view->x += dx;
+						view->width -= dx;
+						edge += WLC_RESIZE_EDGE_LEFT;
+					}
+				}
 			}
-		} else if (dy > 0) {
-			changed_floating = true;
-			if (mouse_origin.y > midway_y) {
-				view->height += dy;
-				edge += WLC_RESIZE_EDGE_BOTTOM;
-			} else {
-				edge = WLC_RESIZE_EDGE_BOTTOM;
-				view->y += dy;
-				view->height -= dy;
-				edge += WLC_RESIZE_EDGE_TOP;
+
+			if (dy < 0) {
+				if (mouse_origin.y > midway_y && !lock_bottom) {
+					if (view->height > min_sane_h) {
+						lock_top = true;
+						changed_floating = true;
+						view->height += dy;
+						edge += WLC_RESIZE_EDGE_BOTTOM;
+					}
+				} else if (mouse_origin.y < midway_y && !lock_top) {
+					lock_bottom = true;
+					changed_floating = true;
+					view->y += dy;
+					view->height -= dy;
+					edge += WLC_RESIZE_EDGE_TOP;
+				}
+			} else if (dy > 0) {
+				if (mouse_origin.y > midway_y && !lock_bottom) {
+					lock_top = true;
+					changed_floating = true;
+					view->height += dy;
+					edge += WLC_RESIZE_EDGE_BOTTOM;
+				} else if (mouse_origin.y < midway_y && !lock_top) {
+					if (view->height > min_sane_h) {
+						lock_bottom = true;
+						changed_floating = true;
+						view->y += dy;
+						view->height -= dy;
+						edge += WLC_RESIZE_EDGE_TOP;
+					}
+				}
 			}
 		}
 	}
@@ -492,10 +521,12 @@ static bool handle_pointer_button(wlc_handle view, uint32_t time, const struct w
 		if (button == 272) {
 			m1_held = false;
 			dragging = false;
+			lock_top = lock_bottom = lock_left = lock_right = false;
 		}
 		if (button == 273) {
 			m2_held = false;
 			resizing = false;
+			lock_top = lock_bottom = lock_left = lock_right = false;
 		}
 	}
 	return false;