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("Screen dimensions: (%d, %d) %d x %d\n", screen->rect.x, screen->rect.y, screen->rect.width, screen->rect.height);
48 /* FIXME: horizontal resizing causes empty spaces to exist */
49 if (orientation == O_HORIZONTAL) {
50 LOG("Sorry, horizontal resizing is not yet activated due to creating layout bugs."
51 "If you are brave, enable the code for yourself and try fixing it.\n");
58 mask = XCB_CW_OVERRIDE_REDIRECT;
61 /* Open a new window, the resizebar. Grab the pointer and move the window around
62 as the user moves the pointer. */
63 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
64 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, mask, values);
67 if (orientation == O_VERTICAL) {
68 helprect.x = event->root_x;
69 helprect.y = screen->rect.y;
71 helprect.height = screen->rect.height;
72 new_position = event->root_x;
75 helprect.y = event->root_y;
76 helprect.width = root_screen->width_in_pixels;
78 new_position = event->root_y;
81 mask = XCB_CW_BACK_PIXEL;
82 values[0] = config.client.focused.border;
84 mask |= XCB_CW_OVERRIDE_REDIRECT;
87 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
88 (orientation == O_VERTICAL ?
89 XCB_CURSOR_SB_V_DOUBLE_ARROW :
90 XCB_CURSOR_SB_H_DOUBLE_ARROW), mask, values);
92 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
96 void resize_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
97 LOG("new x = %d, y = %d\n", new_x, new_y);
98 if (orientation == O_VERTICAL) {
99 /* Check if the new coordinates are within screen boundaries */
100 if (new_x > (screen->rect.x + screen->rect.width - 25) ||
101 new_x < (screen->rect.x + 25))
104 values[0] = new_position = new_x;
105 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
107 if (new_y > (screen->rect.y + screen->rect.height - 25) ||
108 new_y < (screen->rect.y + 25))
111 values[0] = new_position = new_y;
112 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
118 drag_pointer(conn, NULL, event, grabwin, BORDER_TOP, resize_callback);
120 xcb_destroy_window(conn, helpwin);
121 xcb_destroy_window(conn, grabwin);
124 if (orientation == O_VERTICAL) {
125 LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
126 if (event->root_x == new_position) {
127 LOG("Nothing changed, not updating anything\n");
131 int default_width = ws->rect.width / ws->cols;
132 int old_unoccupied_x = get_unoccupied_x(ws);
134 /* We pre-calculate the unoccupied space to see if we need to adapt sizes before
135 * doing the resize */
136 int new_unoccupied_x = old_unoccupied_x;
138 if (old_unoccupied_x == 0)
139 old_unoccupied_x = ws->rect.width;
141 if (ws->width_factor[first] == 0)
142 new_unoccupied_x += default_width;
144 if (ws->width_factor[second] == 0)
145 new_unoccupied_x += default_width;
148 LOG("old = %d, new = %d\n", old_unoccupied_x, new_unoccupied_x);
150 /* If the space used for customly resized columns has changed we need to adapt the
151 * other customly resized columns, if any */
152 if (new_unoccupied_x != old_unoccupied_x)
153 for (int col = 0; col < ws->cols; col++) {
154 if (ws->width_factor[col] == 0)
157 LOG("Updating other column (%d) (current width_factor = %f)\n", col, ws->width_factor[col]);
158 ws->width_factor[col] = (ws->width_factor[col] * old_unoccupied_x) / new_unoccupied_x;
159 LOG("to %f\n", ws->width_factor[col]);
162 LOG("old_unoccupied_x = %d\n", old_unoccupied_x);
164 LOG("Updating first (before = %f)\n", ws->width_factor[first]);
165 /* Convert 0 (for default width_factor) to actual numbers */
166 if (ws->width_factor[first] == 0)
167 ws->width_factor[first] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
169 LOG("middle = %f\n", ws->width_factor[first]);
170 int old_width = ws->width_factor[first] * old_unoccupied_x;
171 LOG("first->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
172 ws->width_factor[first] *= (float)(old_width + (new_position - event->root_x)) / old_width;
173 LOG("-> %f\n", ws->width_factor[first]);
176 LOG("Updating second (before = %f)\n", ws->width_factor[second]);
177 if (ws->width_factor[second] == 0)
178 ws->width_factor[second] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
179 LOG("middle = %f\n", ws->width_factor[second]);
180 old_width = ws->width_factor[second] * old_unoccupied_x;
181 LOG("second->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
182 ws->width_factor[second] *= (float)(old_width - (new_position - event->root_x)) / old_width;
183 LOG("-> %f\n", ws->width_factor[second]);
185 LOG("new unoccupied_x = %d\n", get_unoccupied_x(ws));
190 LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position);
191 if (event->root_y == new_position) {
192 LOG("Nothing changed, not updating anything\n");
196 /* Convert 0 (for default height_factor) to actual numbers */
197 if (first->height_factor == 0)
198 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
199 if (second->height_factor == 0)
200 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
202 first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height;
203 second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height;