4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * This file contains the functions for resizing table columns/rows because
11 * it’s actually lots of work, compared to the other handlers.
18 #include <xcb/xcb_event.h>
32 * Renders the resize window between the first/second container and resizes
33 * the table column/row.
36 int resize_graphical_handler(xcb_connection_t *conn, Workspace *ws, int first, int second,
37 resize_orientation_t orientation, xcb_button_press_event_t *event) {
39 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
40 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
42 LOG("BUG: No screen found at this position (%d, %d)\n", event->root_x, event->root_y);
46 LOG("event->event_x = %d, event->root_x = %d\n", event->event_x, event->root_x);
48 LOG("Screen dimensions: (%d, %d) %d x %d\n", screen->rect.x, screen->rect.y, screen->rect.width, screen->rect.height);
50 /* FIXME: horizontal resizing causes empty spaces to exist */
51 if (orientation == O_HORIZONTAL) {
52 LOG("Sorry, horizontal resizing is not yet activated due to creating layout bugs."
53 "If you are brave, enable the code for yourself and try fixing it.\n");
60 mask = XCB_CW_OVERRIDE_REDIRECT;
63 /* Open a new window, the resizebar. Grab the pointer and move the window around
64 as the user moves the pointer. */
65 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
66 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, true, mask, values);
69 if (orientation == O_VERTICAL) {
70 helprect.x = event->root_x;
71 helprect.y = screen->rect.y;
73 helprect.height = screen->rect.height;
74 new_position = event->root_x;
77 helprect.y = event->root_y;
78 helprect.width = root_screen->width_in_pixels;
80 new_position = event->root_y;
83 mask = XCB_CW_BACK_PIXEL;
84 values[0] = config.client.focused.border;
86 mask |= XCB_CW_OVERRIDE_REDIRECT;
89 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
90 (orientation == O_VERTICAL ?
91 XCB_CURSOR_SB_V_DOUBLE_ARROW :
92 XCB_CURSOR_SB_H_DOUBLE_ARROW), true, mask, values);
94 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
98 void resize_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
99 LOG("new x = %d, y = %d\n", new_x, new_y);
100 if (orientation == O_VERTICAL) {
101 /* Check if the new coordinates are within screen boundaries */
102 if (new_x > (screen->rect.x + screen->rect.width - 25) ||
103 new_x < (screen->rect.x + 25))
106 values[0] = new_position = new_x;
107 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
109 if (new_y > (screen->rect.y + screen->rect.height - 25) ||
110 new_y < (screen->rect.y + 25))
113 values[0] = new_position = new_y;
114 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
120 drag_pointer(conn, NULL, event, grabwin, BORDER_TOP, resize_callback);
122 xcb_destroy_window(conn, helpwin);
123 xcb_destroy_window(conn, grabwin);
126 if (orientation == O_VERTICAL) {
127 LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
128 if (event->root_x == new_position) {
129 LOG("Nothing changed, not updating anything\n");
133 int default_width = ws->rect.width / ws->cols;
134 int old_unoccupied_x = get_unoccupied_x(ws);
136 /* We pre-calculate the unoccupied space to see if we need to adapt sizes before
137 * doing the resize */
138 int new_unoccupied_x = old_unoccupied_x;
140 if (old_unoccupied_x == 0)
141 old_unoccupied_x = ws->rect.width;
143 if (ws->width_factor[first] == 0)
144 new_unoccupied_x += default_width;
146 if (ws->width_factor[second] == 0)
147 new_unoccupied_x += default_width;
150 LOG("old = %d, new = %d\n", old_unoccupied_x, new_unoccupied_x);
152 /* If the space used for customly resized columns has changed we need to adapt the
153 * other customly resized columns, if any */
154 if (new_unoccupied_x != old_unoccupied_x)
155 for (int col = 0; col < ws->cols; col++) {
156 if (ws->width_factor[col] == 0)
159 LOG("Updating other column (%d) (current width_factor = %f)\n", col, ws->width_factor[col]);
160 ws->width_factor[col] = (ws->width_factor[col] * old_unoccupied_x) / new_unoccupied_x;
161 LOG("to %f\n", ws->width_factor[col]);
164 LOG("old_unoccupied_x = %d\n", old_unoccupied_x);
166 LOG("Updating first (before = %f)\n", ws->width_factor[first]);
167 /* Convert 0 (for default width_factor) to actual numbers */
168 if (ws->width_factor[first] == 0)
169 ws->width_factor[first] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
171 LOG("middle = %f\n", ws->width_factor[first]);
172 int old_width = ws->width_factor[first] * old_unoccupied_x;
173 LOG("first->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
174 ws->width_factor[first] *= (float)(old_width + (new_position - event->root_x)) / old_width;
175 LOG("-> %f\n", ws->width_factor[first]);
178 LOG("Updating second (before = %f)\n", ws->width_factor[second]);
179 if (ws->width_factor[second] == 0)
180 ws->width_factor[second] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
181 LOG("middle = %f\n", ws->width_factor[second]);
182 old_width = ws->width_factor[second] * old_unoccupied_x;
183 LOG("second->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
184 ws->width_factor[second] *= (float)(old_width - (new_position - event->root_x)) / old_width;
185 LOG("-> %f\n", ws->width_factor[second]);
187 LOG("new unoccupied_x = %d\n", get_unoccupied_x(ws));
192 LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position);
193 if (event->root_y == new_position) {
194 LOG("Nothing changed, not updating anything\n");
198 /* Convert 0 (for default height_factor) to actual numbers */
199 if (first->height_factor == 0)
200 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
201 if (second->height_factor == 0)
202 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
204 first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height;
205 second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height;