/*
- * 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)
*
- * © 2009-2010 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 "randr.h"
-#include "config.h"
-#include "floating.h"
-#include "workspace.h"
-#include "log.h"
+#include "all.h"
/*
* This is an ugly data structure which we need because there is no standard
*
*/
struct callback_params {
- resize_orientation_t orientation;
- Output *screen;
- xcb_window_t helpwin;
- uint32_t *new_position;
+ orientation_t orientation;
+ Con *output;
+ xcb_window_t helpwin;
+ uint32_t *new_position;
};
DRAGGING_CB(resize_callback) {
- struct callback_params *params = extra;
- Output *screen = params->screen;
- DLOG("new x = %d, y = %d\n", new_x, new_y);
- if (params->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;
-
- *(params->new_position) = new_x;
- xcb_configure_window(conn, params->helpwin, XCB_CONFIG_WINDOW_X, params->new_position);
- } else {
- if (new_y > (screen->rect.y + screen->rect.height - 25) ||
- new_y < (screen->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);
+ 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);
}
-/*
- * Renders the resize window between the first/second container and resizes
- * the table column/row.
- *
- */
-int resize_graphical_handler(xcb_connection_t *conn, Workspace *ws, int first, int second,
- resize_orientation_t orientation, xcb_button_press_event_t *event) {
- uint32_t new_position;
- Output *screen = get_output_containing(event->root_x, event->root_y);
- if (screen == NULL) {
- ELOG("BUG: No screen found at this position (%d, %d)\n", event->root_x, event->root_y);
- return 1;
+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;
}
- /* We cannot use the X root window's width_in_pixels or height_in_pixels
- * attributes here since they are not updated when you configure new
- * screens during runtime. Instead, we just use the most right and most
- * bottom Xinerama screen and use their position + width/height to get
- * the area of pixels currently in use */
- Output *most_right = get_output_most(D_RIGHT, screen),
- *most_bottom = get_output_most(D_DOWN, screen);
-
- DLOG("event->event_x = %d, event->root_x = %d\n", event->event_x, event->root_x);
-
- DLOG("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;
-
- /* Open a new window, the resizebar. Grab the pointer and move the window around
- as the user moves the pointer. */
- Rect grabrect = {0,
- 0,
- most_right->rect.x + most_right->rect.width,
- most_bottom->rect.x + most_bottom->rect.height};
- xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, true, mask, values);
-
- 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 = screen->rect.x;
- helprect.y = event->root_y;
- helprect.width = screen->rect.width;
- 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_H_DOUBLE_ARROW :
- XCB_CURSOR_SB_V_DOUBLE_ARROW), true, mask, values);
-
- xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
-
- xcb_flush(conn);
-
- struct callback_params params = { orientation, screen, helpwin, &new_position };
-
- drag_pointer(conn, NULL, event, grabwin, BORDER_TOP, resize_callback, ¶ms);
-
- xcb_destroy_window(conn, helpwin);
- xcb_destroy_window(conn, grabwin);
- 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;
+ }
+ }
- int pixels;
- if (orientation == O_VERTICAL)
- pixels = (new_position - event->root_x);
- else pixels = (new_position - event->root_y);
- resize_container(conn, ws, first, second, orientation, pixels);
+ 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;
+ }
- return 1;
+ return true;
}
/*
- * Resizes a column/row by the given amount of pixels. Called by
- * resize_graphical_handler (the user clicked) or parse_resize_command (the
- * user issued the command)
+ * Calculate the given container's new percent given a change in pixels.
*
*/
-void resize_container(xcb_connection_t *conn, Workspace *ws, int first, int second,
- resize_orientation_t orientation, int pixels) {
-
- /* TODO: refactor this, both blocks are very identical */
- if (orientation == O_VERTICAL) {
- 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;
-
- DLOG("\n\n\n");
- DLOG("old = %d, new = %d\n", old_unoccupied_x, new_unoccupied_x);
-
- int cols_without_wf = 0;
- int old_width, old_second_width;
- for (int col = 0; col < ws->cols; col++)
- if (ws->width_factor[col] == 0)
- cols_without_wf++;
-
- DLOG("old_unoccupied_x = %d\n", old_unoccupied_x);
-
- DLOG("Updating first (before = %f)\n", ws->width_factor[first]);
- /* Convert 0 (for default width_factor) to actual numbers */
- if (ws->width_factor[first] == 0)
- old_width = (old_unoccupied_x / max(cols_without_wf, 1));
- else old_width = ws->width_factor[first] * old_unoccupied_x;
-
- DLOG("second (before = %f)\n", ws->width_factor[second]);
- if (ws->width_factor[second] == 0)
- old_second_width = (old_unoccupied_x / max(cols_without_wf, 1));
- else old_second_width = ws->width_factor[second] * old_unoccupied_x;
-
- DLOG("middle = %f\n", ws->width_factor[first]);
-
- /* 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;
-
- DLOG("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;
- DLOG("to %f\n", ws->width_factor[col]);
- }
-
- DLOG("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("first->width = %d, pixels = %d\n", old_width, pixels);
- ws->width_factor[first] *= (float)(old_width + pixels) / old_width;
- DLOG("-> %f\n", ws->width_factor[first]);
-
-
- DLOG("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;
-
- DLOG("middle = %f\n", ws->width_factor[second]);
- DLOG("second->width = %d, pixels = %d\n", old_second_width, pixels);
- ws->width_factor[second] *= (float)(old_second_width - pixels) / old_second_width;
- DLOG("-> %f\n", ws->width_factor[second]);
-
- DLOG("new unoccupied_x = %d\n", get_unoccupied_x(ws));
-
- DLOG("\n\n\n");
- } else {
- int ws_height = workspace_height(ws);
- int default_height = ws_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_height;
-
- if (ws->height_factor[first] == 0)
- new_unoccupied_y += default_height;
-
- if (ws->height_factor[second] == 0)
- new_unoccupied_y += default_height;
-
- int cols_without_hf = 0;
- int old_height, old_second_height;
- for (int row = 0; row < ws->rows; row++)
- if (ws->height_factor[row] == 0)
- cols_without_hf++;
-
- DLOG("old_unoccupied_y = %d\n", old_unoccupied_y);
-
- DLOG("Updating first (before = %f)\n", ws->height_factor[first]);
- /* Convert 0 (for default width_factor) to actual numbers */
- if (ws->height_factor[first] == 0)
- old_height = (old_unoccupied_y / max(cols_without_hf, 1));
- else old_height = ws->height_factor[first] * old_unoccupied_y;
-
- DLOG("second (before = %f)\n", ws->height_factor[second]);
- if (ws->height_factor[second] == 0)
- old_second_height = (old_unoccupied_y / max(cols_without_hf, 1));
- else old_second_height = ws->height_factor[second] * old_unoccupied_y;
-
- DLOG("middle = %f\n", ws->height_factor[first]);
-
-
- DLOG("\n\n\n");
- DLOG("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;
-
- DLOG("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;
- DLOG("to %f\n", ws->height_factor[row]);
- }
-
-
- DLOG("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_height / ws->rows) / new_unoccupied_y;
-
- DLOG("first->width = %d, pixels = %d\n", old_height, pixels);
- ws->height_factor[first] *= (float)(old_height + pixels) / old_height;
- DLOG("-> %f\n", ws->height_factor[first]);
-
-
- DLOG("Updating second (before = %f)\n", ws->height_factor[second]);
- if (ws->height_factor[second] == 0)
- ws->height_factor[second] = ((float)ws_height / ws->rows) / new_unoccupied_y;
- DLOG("middle = %f\n", ws->height_factor[second]);
- DLOG("second->width = %d, pixels = %d\n", old_second_height, pixels);
- ws->height_factor[second] *= (float)(old_second_height - pixels) / old_second_height;
- DLOG("-> %f\n", ws->height_factor[second]);
+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);
+}
- DLOG("new unoccupied_y = %d\n", get_unoccupied_y(ws));
+/*
+ * Calculate the minimum percent needed for the given container to be at least 1
+ * pixel.
+ *
+ */
+double percent_for_1px(Con *con) {
+ Con *parent = con->parent;
+ const orientation_t o = con_orientation(parent);
+ const int total = (o == HORIZ ? parent->rect.width : parent->rect.height);
+ const int target = (o == HORIZ ? 1 : 1 + con->deco_rect.height);
+ return ((double)target / (double)total);
+}
- DLOG("\n\n\n");
- }
+/*
+ * 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;
+ 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 (new_first_percent < percent_for_1px(first) || new_second_percent < percent_for_1px(second)) {
+ return false;
+ }
+
+ first->percent = new_first_percent;
+ second->percent = new_second_percent;
+ con_fix_percent(parent);
+ return true;
+}
- render_layout(conn);
+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