/*
- * vim:ts=8:expandtab
+ * vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
+ * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
*
- * © 2009 Michael Stapelberg and contributors
- *
- * See file LICENSE for license information.
- *
- * This file contains the functions for resizing table columns/rows because
- * it’s actually lots of work, compared to the other handlers.
+ * resize.c: Interactive resizing.
*
*/
-#include <stdlib.h>
-#include <assert.h>
-
-#include <xcb/xcb.h>
-#include <xcb/xcb_event.h>
-
-#include "i3.h"
-#include "data.h"
-#include "resize.h"
-#include "util.h"
-#include "xcb.h"
-#include "debug.h"
-#include "layout.h"
-#include "xinerama.h"
-#include "config.h"
-#include "floating.h"
+#include "all.h"
/*
- * Renders the resize window between the first/second container and resizes
- * the table column/row.
+ * This is an ugly data structure which we need because there is no standard
+ * way of having nested functions (only available as a gcc extension at the
+ * moment, clang doesn’t support it) or blocks (only available as a clang
+ * extension and only on Mac OS X systems at the moment).
*
*/
-int resize_graphical_handler(xcb_connection_t *conn, Workspace *ws, int first, int second,
- resize_orientation_t orientation, xcb_button_press_event_t *event) {
- int new_position;
- xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
- i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
- if (screen == NULL) {
- LOG("BUG: No screen found at this position (%d, %d)\n", event->root_x, event->root_y);
- return 1;
- }
-
- LOG("event->event_x = %d, event->root_x = %d\n", event->event_x, event->root_x);
-
- LOG("Screen dimensions: (%d, %d) %d x %d\n", screen->rect.x, screen->rect.y, screen->rect.width, screen->rect.height);
-
- uint32_t mask = 0;
- uint32_t values[2];
-
- mask = XCB_CW_OVERRIDE_REDIRECT;
- values[0] = 1;
+struct callback_params {
+ orientation_t orientation;
+ Con *output;
+ xcb_window_t helpwin;
+ uint32_t *new_position;
+};
+
+DRAGGING_CB(resize_callback) {
+ const struct callback_params *params = extra;
+ Con *output = params->output;
+ DLOG("new x = %d, y = %d\n", new_x, new_y);
+ if (params->orientation == HORIZ) {
+ /* Check if the new coordinates are within screen boundaries */
+ if (new_x > (output->rect.x + output->rect.width - 25) ||
+ new_x < (output->rect.x + 25))
+ return;
+
+ *(params->new_position) = new_x;
+ xcb_configure_window(conn, params->helpwin, XCB_CONFIG_WINDOW_X, params->new_position);
+ } else {
+ if (new_y > (output->rect.y + output->rect.height - 25) ||
+ new_y < (output->rect.y + 25))
+ return;
+
+ *(params->new_position) = new_y;
+ xcb_configure_window(conn, params->helpwin, XCB_CONFIG_WINDOW_Y, params->new_position);
+ }
+
+ xcb_flush(conn);
+}
- /* Open a new window, the resizebar. Grab the pointer and move the window around
- as the user moves the pointer. */
- Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
- xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, true, mask, values);
+bool resize_find_tiling_participants(Con **current, Con **other, direction_t direction, bool both_sides) {
+ DLOG("Find two participants for resizing container=%p in direction=%i\n", other, direction);
+ Con *first = *current;
+ Con *second = NULL;
+ if (first == NULL) {
+ DLOG("Current container is NULL, aborting.\n");
+ return false;
+ }
+
+ /* Go up in the tree and search for a container to resize */
+ const orientation_t search_orientation = orientation_from_direction(direction);
+ const bool dir_backwards = (direction == D_UP || direction == D_LEFT);
+ while (first->type != CT_WORKSPACE &&
+ first->type != CT_FLOATING_CON &&
+ second == NULL) {
+ /* get the appropriate first container with the matching
+ * orientation (skip stacked/tabbed cons) */
+ if ((con_orientation(first->parent) != search_orientation) ||
+ (first->parent->layout == L_STACKED) ||
+ (first->parent->layout == L_TABBED)) {
+ first = first->parent;
+ continue;
+ }
- Rect helprect;
- if (orientation == O_VERTICAL) {
- helprect.x = event->root_x;
- helprect.y = screen->rect.y;
- helprect.width = 2;
- helprect.height = screen->rect.height;
- new_position = event->root_x;
+ /* get the counterpart for this resizement */
+ if (dir_backwards) {
+ second = TAILQ_PREV(first, nodes_head, nodes);
+ if (second == NULL && both_sides == true) {
+ second = TAILQ_NEXT(first, nodes);
+ }
} else {
- helprect.x = 0;
- helprect.y = event->root_y;
- helprect.width = root_screen->width_in_pixels;
- helprect.height = 2;
- new_position = event->root_y;
+ second = TAILQ_NEXT(first, nodes);
+ if (second == NULL && both_sides == true) {
+ second = TAILQ_PREV(first, nodes_head, nodes);
+ }
}
- mask = XCB_CW_BACK_PIXEL;
- values[0] = config.client.focused.border;
-
- mask |= XCB_CW_OVERRIDE_REDIRECT;
- values[1] = 1;
-
- xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
- (orientation == O_VERTICAL ?
- XCB_CURSOR_SB_V_DOUBLE_ARROW :
- XCB_CURSOR_SB_H_DOUBLE_ARROW), true, mask, values);
-
- xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
-
- xcb_flush(conn);
-
- void resize_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
- LOG("new x = %d, y = %d\n", new_x, new_y);
- if (orientation == O_VERTICAL) {
- /* Check if the new coordinates are within screen boundaries */
- if (new_x > (screen->rect.x + screen->rect.width - 25) ||
- new_x < (screen->rect.x + 25))
- return;
-
- values[0] = new_position = new_x;
- xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
- } else {
- if (new_y > (screen->rect.y + screen->rect.height - 25) ||
- new_y < (screen->rect.y + 25))
- return;
-
- values[0] = new_position = new_y;
- xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
- }
-
- xcb_flush(conn);
+ if (second == NULL) {
+ DLOG("No second container in this direction found, trying to look further up in the tree...\n");
+ first = first->parent;
}
+ }
- drag_pointer(conn, NULL, event, grabwin, BORDER_TOP, resize_callback);
-
- xcb_destroy_window(conn, helpwin);
- xcb_destroy_window(conn, grabwin);
- xcb_flush(conn);
-
- /* TODO: refactor this, both blocks are very identical */
- if (orientation == O_VERTICAL) {
- LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
- if (event->root_x == new_position) {
- LOG("Nothing changed, not updating anything\n");
- return 1;
- }
-
- int default_width = ws->rect.width / ws->cols;
- int old_unoccupied_x = get_unoccupied_x(ws);
-
- /* We pre-calculate the unoccupied space to see if we need to adapt sizes before
- * doing the resize */
- int new_unoccupied_x = old_unoccupied_x;
-
- if (old_unoccupied_x == 0)
- old_unoccupied_x = ws->rect.width;
-
- if (ws->width_factor[first] == 0)
- new_unoccupied_x += default_width;
-
- if (ws->width_factor[second] == 0)
- new_unoccupied_x += default_width;
-
- LOG("\n\n\n");
- LOG("old = %d, new = %d\n", old_unoccupied_x, new_unoccupied_x);
-
- /* If the space used for customly resized columns has changed we need to adapt the
- * other customly resized columns, if any */
- if (new_unoccupied_x != old_unoccupied_x)
- for (int col = 0; col < ws->cols; col++) {
- if (ws->width_factor[col] == 0)
- continue;
-
- LOG("Updating other column (%d) (current width_factor = %f)\n", col, ws->width_factor[col]);
- ws->width_factor[col] = (ws->width_factor[col] * old_unoccupied_x) / new_unoccupied_x;
- LOG("to %f\n", ws->width_factor[col]);
- }
-
- LOG("old_unoccupied_x = %d\n", old_unoccupied_x);
-
- LOG("Updating first (before = %f)\n", ws->width_factor[first]);
- /* Convert 0 (for default width_factor) to actual numbers */
- if (ws->width_factor[first] == 0)
- ws->width_factor[first] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
+ DLOG("Found participants: first=%p and second=%p.\n", first, second);
+ *current = first;
+ *other = second;
+ if (first == NULL || second == NULL) {
+ DLOG("Could not find two participants for this resize request.\n");
+ return false;
+ }
- LOG("middle = %f\n", ws->width_factor[first]);
- int old_width = ws->width_factor[first] * old_unoccupied_x;
- LOG("first->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
- ws->width_factor[first] *= (float)(old_width + (new_position - event->root_x)) / old_width;
- LOG("-> %f\n", ws->width_factor[first]);
-
-
- LOG("Updating second (before = %f)\n", ws->width_factor[second]);
- if (ws->width_factor[second] == 0)
- ws->width_factor[second] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
- LOG("middle = %f\n", ws->width_factor[second]);
- old_width = ws->width_factor[second] * old_unoccupied_x;
- LOG("second->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
- ws->width_factor[second] *= (float)(old_width - (new_position - event->root_x)) / old_width;
- LOG("-> %f\n", ws->width_factor[second]);
-
- LOG("new unoccupied_x = %d\n", get_unoccupied_x(ws));
-
- LOG("\n\n\n");
- } else {
- LOG("Resize was from X = %d to X = %d\n", event->root_y, new_position);
- if (event->root_y == new_position) {
- LOG("Nothing changed, not updating anything\n");
- return 1;
- }
-
- int default_height = ws->rect.height / ws->rows;
- int old_unoccupied_y = get_unoccupied_y(ws);
-
- /* We pre-calculate the unoccupied space to see if we need to adapt sizes before
- * doing the resize */
- int new_unoccupied_y = old_unoccupied_y;
-
- if (old_unoccupied_y == 0)
- old_unoccupied_y = ws->rect.height;
-
- if (ws->height_factor[first] == 0)
- new_unoccupied_y += default_height;
-
- if (ws->height_factor[second] == 0)
- new_unoccupied_y += default_height;
-
- LOG("\n\n\n");
- LOG("old = %d, new = %d\n", old_unoccupied_y, new_unoccupied_y);
-
- /* If the space used for customly resized columns has changed we need to adapt the
- * other customly resized columns, if any */
- if (new_unoccupied_y != old_unoccupied_y)
- for (int row = 0; row < ws->rows; row++) {
- if (ws->height_factor[row] == 0)
- continue;
-
- LOG("Updating other column (%d) (current width_factor = %f)\n", row, ws->height_factor[row]);
- ws->height_factor[row] = (ws->height_factor[row] * old_unoccupied_y) / new_unoccupied_y;
- LOG("to %f\n", ws->height_factor[row]);
- }
-
- LOG("old_unoccupied_y = %d\n", old_unoccupied_y);
-
- LOG("Updating first (before = %f)\n", ws->height_factor[first]);
- /* Convert 0 (for default width_factor) to actual numbers */
- if (ws->height_factor[first] == 0)
- ws->height_factor[first] = ((float)ws->rect.height / ws->rows) / new_unoccupied_y;
-
- LOG("middle = %f\n", ws->height_factor[first]);
- int old_height = ws->height_factor[first] * old_unoccupied_y;
- LOG("first->width = %d, new_position = %d, event->root_x = %d\n", old_height, new_position, event->root_y);
- ws->height_factor[first] *= (float)(old_height + (new_position - event->root_y)) / old_height;
- LOG("-> %f\n", ws->height_factor[first]);
-
-
- LOG("Updating second (before = %f)\n", ws->height_factor[second]);
- if (ws->height_factor[second] == 0)
- ws->height_factor[second] = ((float)ws->rect.height / ws->rows) / new_unoccupied_y;
- LOG("middle = %f\n", ws->height_factor[second]);
- old_height = ws->height_factor[second] * old_unoccupied_y;
- LOG("second->width = %d, new_position = %d, event->root_x = %d\n", old_height, new_position, event->root_y);
- ws->height_factor[second] *= (float)(old_height - (new_position - event->root_y)) / old_height;
- LOG("-> %f\n", ws->height_factor[second]);
-
- LOG("new unoccupied_y = %d\n", get_unoccupied_y(ws));
+ return true;
+}
- LOG("\n\n\n");
- }
+/*
+ * Calculate the given container's new percent given a change in pixels.
+ *
+ */
+double px_resize_to_percent(Con *con, int px_diff) {
+ Con *parent = con->parent;
+ const orientation_t o = con_orientation(parent);
+ const int total = (o == HORIZ ? parent->rect.width : parent->rect.height);
+ /* deco_rect.height is subtracted from each child in render_con_split */
+ const int target = px_diff + (o == HORIZ ? con->rect.width : con->rect.height + con->deco_rect.height);
+ return ((double)target / (double)total);
+}
- render_layout(conn);
+/*
+ * Resize the two given containers using the given amount of pixels or
+ * percentage points. One of the two needs to be 0. A positive amount means
+ * growing the first container while a negative means shrinking it.
+ * Returns false when the resize would result in one of the two containers
+ * having less than 1 pixel of size.
+ *
+ */
+bool resize_neighboring_cons(Con *first, Con *second, int px, int ppt) {
+ assert(px * ppt == 0);
+
+ Con *parent = first->parent;
+ orientation_t orientation = con_orientation(parent);
+ const int total = (orientation == HORIZ ? parent->rect.width : parent->rect.height);
+ double new_first_percent;
+ double new_second_percent;
+ if (ppt) {
+ new_first_percent = first->percent + ((double)ppt / 100.0);
+ new_second_percent = second->percent - ((double)ppt / 100.0);
+ } else {
+ new_first_percent = px_resize_to_percent(first, px);
+ new_second_percent = second->percent + first->percent - new_first_percent;
+ }
+ /* Ensure that no container will be less than 1 pixel in the resizing
+ * direction. */
+ if (lround(new_first_percent * total) <= 0 || lround(new_second_percent * total) <= 0) {
+ return false;
+ }
+
+ first->percent = new_first_percent;
+ second->percent = new_second_percent;
+ con_fix_percent(parent);
+ return true;
+}
- return 1;
+void resize_graphical_handler(Con *first, Con *second, orientation_t orientation, const xcb_button_press_event_t *event) {
+ Con *output = con_get_output(first);
+ DLOG("x = %d, width = %d\n", output->rect.x, output->rect.width);
+
+ x_mask_event_mask(~XCB_EVENT_MASK_ENTER_WINDOW);
+ xcb_flush(conn);
+
+ uint32_t mask = 0;
+ uint32_t values[2];
+
+ mask = XCB_CW_OVERRIDE_REDIRECT;
+ values[0] = 1;
+
+ /* Open a new window, the resizebar. Grab the pointer and move the window
+ * around as the user moves the pointer. */
+ xcb_window_t grabwin = create_window(conn, output->rect, XCB_COPY_FROM_PARENT, XCB_COPY_FROM_PARENT,
+ XCB_WINDOW_CLASS_INPUT_ONLY, XCURSOR_CURSOR_POINTER, true, mask, values);
+
+ /* Keep track of the coordinate orthogonal to motion so we can determine the
+ * length of the resize afterward. */
+ uint32_t initial_position, new_position;
+
+ /* Configure the resizebar and snap the pointer. The resizebar runs along
+ * the rect of the second con and follows the motion of the pointer. */
+ Rect helprect;
+ helprect.x = second->rect.x;
+ helprect.y = second->rect.y;
+ if (orientation == HORIZ) {
+ helprect.width = logical_px(2);
+ helprect.height = second->rect.height;
+ initial_position = second->rect.x;
+ xcb_warp_pointer(conn, XCB_NONE, event->root, 0, 0, 0, 0,
+ second->rect.x, event->root_y);
+ } else {
+ helprect.width = second->rect.width;
+ helprect.height = logical_px(2);
+ initial_position = second->rect.y;
+ xcb_warp_pointer(conn, XCB_NONE, event->root, 0, 0, 0, 0,
+ event->root_x, second->rect.y);
+ }
+
+ mask = XCB_CW_BACK_PIXEL;
+ values[0] = config.client.focused.border.colorpixel;
+
+ mask |= XCB_CW_OVERRIDE_REDIRECT;
+ values[1] = 1;
+
+ xcb_window_t helpwin = create_window(conn, helprect, XCB_COPY_FROM_PARENT, XCB_COPY_FROM_PARENT,
+ XCB_WINDOW_CLASS_INPUT_OUTPUT, (orientation == HORIZ ? XCURSOR_CURSOR_RESIZE_HORIZONTAL : XCURSOR_CURSOR_RESIZE_VERTICAL), true, mask, values);
+
+ xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
+
+ xcb_flush(conn);
+
+ /* `new_position' will be updated by the `resize_callback'. */
+ new_position = initial_position;
+
+ const struct callback_params params = {orientation, output, helpwin, &new_position};
+
+ /* `drag_pointer' blocks until the drag is completed. */
+ drag_result_t drag_result = drag_pointer(NULL, event, grabwin, BORDER_TOP, 0, resize_callback, ¶ms);
+
+ xcb_destroy_window(conn, helpwin);
+ xcb_destroy_window(conn, grabwin);
+ xcb_flush(conn);
+
+ /* User cancelled the drag so no action should be taken. */
+ if (drag_result == DRAG_REVERT) {
+ return;
+ }
+
+ int pixels = (new_position - initial_position);
+ DLOG("Done, pixels = %d\n", pixels);
+
+ /* if we got thus far, the containers must have valid percentages. */
+ assert(first->percent > 0.0);
+ assert(second->percent > 0.0);
+ const bool result = resize_neighboring_cons(first, second, pixels, 0);
+ DLOG("Graphical resize %s: first->percent = %f, second->percent = %f.\n",
+ result ? "successful" : "failed", first->percent, second->percent);
}
projects / i3 / i3 / blobdiff