Merge pull request #121 from taiyu-len/pointer_mod

Pointer mode clean and fix.

1 files changed, 265 insertions, 16 deletions

diff --git a/sway/input_state.c b/sway/input_state.c
index 9e065e60..e911d9cf 100644
--- a/sway/input_state.c
+++ b/sway/input_state.c
@@ -74,27 +74,276 @@ void release_key(uint32_t key_sym, uint32_t key_code) {
 	}
 }
 
+// Pointer state and mode
+
 struct pointer_state pointer_state;
 
-static struct wlc_geometry saved_floating;
+static struct mode_state {
+	// initial view state
+	double x, y, w, h;
+	swayc_t *ptr;
+	// Containers used for resizing horizontally
+	struct {
+		double w;
+		swayc_t *ptr;
+		struct {
+			double w;
+			swayc_t *ptr;
+		} parent;
+	} horiz;
+	// Containers used for resizing vertically
+	struct {
+		double h;
+		swayc_t *ptr;
+		struct {
+			double h;
+			swayc_t *ptr;
+		} parent;
+	} vert;
+} initial;
+
+static struct {
+	bool left;
+	bool top;
+} lock;
+
+// initial set/unset
+
+static void set_initial_view(swayc_t *view) {
+	initial.ptr = view;
+	initial.x = view->x;
+	initial.y = view->y;
+	initial.w = view->width;
+	initial.h = view->height;
+}
+
+static void set_initial_sibling(void) {
+	bool reset = true;
+	if ((initial.horiz.ptr = get_swayc_in_direction(initial.ptr, lock.left ? MOVE_RIGHT: MOVE_LEFT))) {
+		initial.horiz.w = initial.horiz.ptr->width;
+		initial.horiz.parent.ptr = get_swayc_in_direction(initial.horiz.ptr, lock.left ? MOVE_LEFT : MOVE_RIGHT);
+		initial.horiz.parent.w = initial.horiz.parent.ptr->width;
+		reset = false;
+	}
+	if ((initial.vert.ptr = get_swayc_in_direction(initial.ptr, lock.top ? MOVE_DOWN: MOVE_UP))) {
+		initial.vert.h = initial.vert.ptr->height;
+		initial.vert.parent.ptr = get_swayc_in_direction(initial.vert.ptr, lock.top ? MOVE_UP : MOVE_DOWN);
+		initial.vert.parent.h = initial.vert.parent.ptr->height;
+		reset = false;
+	}
+	// If nothing will change just undo the mode
+	if (reset) {
+		pointer_state.mode = 0;
+	}
+}
+
+static void reset_initial_view(void) {
+	initial.ptr->x = initial.x;
+	initial.ptr->y = initial.y;
+	initial.ptr->width = initial.w;
+	initial.ptr->height = initial.h;
+	arrange_windows(initial.ptr, -1, -1);
+	pointer_state.mode = 0;
+}
+
+static void reset_initial_sibling(void) {
+	initial.horiz.ptr->width = initial.horiz.w;
+	initial.horiz.parent.ptr->width = initial.horiz.parent.w;
+	initial.vert.ptr->height = initial.vert.h;
+	initial.vert.parent.ptr->height = initial.vert.parent.h;
+	arrange_windows(initial.horiz.ptr->parent, -1, -1);
+	arrange_windows(initial.vert.ptr->parent, -1, -1);
+	pointer_state.mode = 0;
+}
+
+// Mode set left/right click
+
+static void pointer_mode_set_left(void) {
+	set_initial_view(pointer_state.left.view);
+	if (initial.ptr->is_floating) {
+		pointer_state.mode = M_DRAGGING | M_FLOATING;
+	} else {
+		pointer_state.mode = M_DRAGGING | M_TILING;
+	}
+}
+
+static void pointer_mode_set_right(void) {
+	set_initial_view(pointer_state.right.view);
+	// Setup locking information
+	int midway_x = initial.ptr->x + initial.ptr->width/2;
+	int midway_y = initial.ptr->y + initial.ptr->height/2;
+
+	lock.left = pointer_state.origin.x > midway_x;
+	lock.top = pointer_state.origin.y > midway_y;
+
+	if (initial.ptr->is_floating) {
+		pointer_state.mode = M_RESIZING | M_FLOATING;
+	} else {
+		pointer_state.mode = M_RESIZING | M_TILING;
+		set_initial_sibling();
+	}
+}
+
+// Mode set/update/reset
+
+void pointer_mode_set(uint32_t button, bool condition) {
+	// switch on drag/resize mode
+	switch (pointer_state.mode & (M_DRAGGING | M_RESIZING)) {
+	case M_DRAGGING:
+	// end drag mode when left click is unpressed
+		if (!pointer_state.left.held) {
+			pointer_state.mode = 0;
+		}
+		break;
+
+	case M_RESIZING:
+	// end resize mode when right click is unpressed
+		if (!pointer_state.right.held) {
+			pointer_state.mode = 0;
+		}
+		break;
+
+	// No mode case
+	default:
+		// return if failed condition, or no view
+		if (!condition || !pointer_state.view) {
+			break;
+		}
 
-void start_floating(swayc_t *view) {
-	if (view->is_floating) {
-		saved_floating.origin.x = view->x;
-		saved_floating.origin.y = view->y;
-		saved_floating.size.w = view->width;
-		saved_floating.size.h = view->height;
+		// Set mode depending on current button press
+		switch (button) {
+		// Start dragging mode
+		case M_LEFT_CLICK:
+			// if button release dont do anything
+			if (pointer_state.left.held) {
+				pointer_mode_set_left();
+			}
+			break;
+
+		// Start resize mode
+		case M_RIGHT_CLICK:
+			// if button release dont do anyhting
+			if (pointer_state.right.held) {
+				pointer_mode_set_right();
+			}
+			break;
+		}
 	}
 }
 
-void reset_floating(swayc_t *view) {
-	if (view->is_floating) {
-		view->x = saved_floating.origin.x;
-		view->y = saved_floating.origin.y;
-		view->width = saved_floating.size.w;
-		view->height = saved_floating.size.h;
-		arrange_windows(view->parent, -1, -1);
+void pointer_mode_update(void) {
+	if (initial.ptr->type != C_VIEW) {
+		pointer_state.mode = 0;
+		return;
+	}
+	int dx = pointer_state.origin.x;
+	int dy = pointer_state.origin.y;
+
+	switch (pointer_state.mode) {
+	case M_FLOATING | M_DRAGGING:
+		// Update position
+		dx -= pointer_state.left.x;
+		dy -= pointer_state.left.y;
+		if (initial.x + dx != initial.ptr->x) {
+			initial.ptr->x = initial.x + dx;
+		}
+		if (initial.y + dy != initial.ptr->y) {
+			initial.ptr->y = initial.y + dy;
+		}
+		update_geometry(initial.ptr);
+		break;
+
+	case M_FLOATING | M_RESIZING:
+		dx -= pointer_state.right.x;
+		dy -= pointer_state.right.y;
+		initial.ptr = pointer_state.right.view;
+		if (lock.left) {
+			if (initial.w + dx > min_sane_w) {
+				initial.ptr->width = initial.w + dx;
+			}
+		} else { // lock.right
+			if (initial.w - dx > min_sane_w) {
+				initial.ptr->width = initial.w - dx;
+				initial.ptr->x = initial.x + dx;
+			}
+		}
+		if (lock.top) {
+			if (initial.h + dy > min_sane_h) {
+				initial.ptr->height = initial.h + dy;
+			}
+		} else { // lock.bottom
+			if (initial.h - dy > min_sane_h) {
+				initial.ptr->height = initial.h - dy;
+				initial.ptr->y = initial.y + dy;
+			}
+		}
+		update_geometry(initial.ptr);
+		break;
+
+	case M_TILING | M_DRAGGING:
+		// swap current view under pointer with dragged view
+		if (pointer_state.view && pointer_state.view->type == C_VIEW
+				&& pointer_state.view != initial.ptr) {
+			// Swap them around
+			swap_container(pointer_state.view, initial.ptr);
+			update_geometry(pointer_state.view);
+			update_geometry(initial.ptr);
+			// Set focus back to initial view
+			set_focused_container(initial.ptr);
+		}
+		break;
+
+	case M_TILING | M_RESIZING:
+		dx -= pointer_state.right.x;
+		dy -= pointer_state.right.y;
+		// resize if we can
+		if (initial.horiz.ptr) {
+			if (lock.left) {
+				// Check whether its fine to resize
+				if (initial.w + dx > min_sane_w && initial.horiz.w - dx > min_sane_w) {
+					initial.horiz.ptr->width = initial.horiz.w - dx;
+					initial.horiz.parent.ptr->width = initial.horiz.parent.w + dx;
+				}
+			} else { // lock.right
+				if (initial.w - dx > min_sane_w && initial.horiz.w + dx > min_sane_w) {
+					initial.horiz.ptr->width = initial.horiz.w + dx;
+					initial.horiz.parent.ptr->width = initial.horiz.parent.w - dx;
+				}
+			}
+			arrange_windows(initial.horiz.ptr->parent, -1, -1);
+		}
+		if (initial.vert.ptr) {
+			if (lock.top) {
+				if (initial.h + dy > min_sane_h && initial.vert.h - dy > min_sane_h) {
+					initial.vert.ptr->height = initial.vert.h - dy;
+					initial.vert.parent.ptr->height = initial.vert.parent.h + dy;
+				}
+			} else { // lock.bottom
+				if (initial.h - dy > min_sane_h && initial.vert.h + dy > min_sane_h) {
+					initial.vert.ptr->height = initial.vert.h + dy;
+					initial.vert.parent.ptr->height = initial.vert.parent.h - dy;
+				}
+			}
+			arrange_windows(initial.vert.ptr->parent, -1, -1);
+		}
+	default:
+		return;
+	}
+}
+
+void pointer_mode_reset(void) {
+	switch (pointer_state.mode) {
+	case M_FLOATING | M_RESIZING:
+	case M_FLOATING | M_DRAGGING:
+		reset_initial_view();
+		break;
+
+	case M_TILING | M_RESIZING:
+		(void) reset_initial_sibling;
+		break;
+
+	case M_TILING | M_DRAGGING:
+	default:
+		break;
 	}
-	pointer_state.floating = (struct pointer_floating){0, 0};
-	pointer_state.lock = (struct pointer_lock){0, 0, 0, 0, 0, 0, 0, 0};
 }