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gri3-wm/src/resize.c

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/*
* vim:ts=8:expandtab
*
* i3 - an improved dynamic tiling window manager
*
* © 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.
*
*/
#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"
/*
* 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) {
int new_position;
struct xoutput *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;
}
/* 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 */
struct xoutput *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;
} else {
helprect.x = screen->rect.x;
helprect.y = event->root_y;
helprect.width = screen->rect.width;
helprect.height = 2;
new_position = event->root_y;
}
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);
void resize_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
DLOG("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);
}
drag_pointer(conn, NULL, event, grabwin, BORDER_TOP, resize_callback);
xcb_destroy_window(conn, helpwin);
xcb_destroy_window(conn, grabwin);
xcb_flush(conn);
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);
return 1;
}
/*
* 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)
*
*/
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]);
DLOG("new unoccupied_y = %d\n", get_unoccupied_y(ws));
DLOG("\n\n\n");
}
render_layout(conn);
}
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