222 lines
9.3 KiB
C
222 lines
9.3 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* This file contains the functions for resizing table columns/rows because
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* it’s actually lots of work, compared to the other handlers.
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*
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*/
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#include <stdlib.h>
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#include <assert.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_event.h>
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#include "i3.h"
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#include "data.h"
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#include "resize.h"
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#include "util.h"
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#include "xcb.h"
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#include "debug.h"
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#include "layout.h"
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/*
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* Renders the resize window between the first/second container and resizes
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* the table column/row.
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*
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*/
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int resize_graphical_handler(xcb_connection_t *conn, Workspace *ws, int first, int second,
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resize_orientation_t orientation, xcb_button_press_event_t *event) {
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int new_position;
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xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
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xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
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/* FIXME: horizontal resizing causes empty spaces to exist */
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if (orientation == O_HORIZONTAL) {
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LOG("Sorry, horizontal resizing is not yet activated due to creating layout bugs."
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"If you are brave, enable the code for yourself and try fixing it.\n");
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return 1;
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}
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uint32_t mask = 0;
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uint32_t values[2];
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mask = XCB_CW_OVERRIDE_REDIRECT;
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values[0] = 1;
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/* Open a new window, the resizebar. Grab the pointer and move the window around
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as the user moves the pointer. */
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Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
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xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, mask, values);
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Rect helprect;
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if (orientation == O_VERTICAL) {
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helprect.x = event->root_x;
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helprect.y = 0;
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helprect.width = 2;
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helprect.height = root_screen->height_in_pixels;
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new_position = event->root_x;
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} else {
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helprect.x = 0;
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helprect.y = event->root_y;
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helprect.width = root_screen->width_in_pixels;
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helprect.height = 2;
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new_position = event->root_y;
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}
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mask = XCB_CW_BACK_PIXEL;
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values[0] = get_colorpixel(conn, "#4c7899");
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mask |= XCB_CW_OVERRIDE_REDIRECT;
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values[1] = 1;
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xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT,
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(orientation == O_VERTICAL ?
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XCB_CURSOR_SB_V_DOUBLE_ARROW :
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XCB_CURSOR_SB_H_DOUBLE_ARROW), mask, values);
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xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
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xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
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XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
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xcb_flush(conn);
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xcb_generic_event_t *inside_event;
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/* I’ve always wanted to have my own eventhandler… */
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while ((inside_event = xcb_wait_for_event(conn))) {
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/* Same as get_event_handler in xcb */
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int nr = inside_event->response_type;
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if (nr == 0) {
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/* An error occured */
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handle_event(NULL, conn, inside_event);
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free(inside_event);
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continue;
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}
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assert(nr < 256);
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nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
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assert(nr >= 2);
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/* Check if we need to escape this loop */
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if (nr == XCB_BUTTON_RELEASE)
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break;
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switch (nr) {
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case XCB_MOTION_NOTIFY:
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if (orientation == O_VERTICAL) {
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values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_x;
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xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
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} else {
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values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_y;
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xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
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}
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xcb_flush(conn);
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break;
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default:
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LOG("Passing to original handler\n");
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/* Use original handler */
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xcb_event_handle(&evenths, inside_event);
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break;
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}
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free(inside_event);
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}
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xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
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xcb_destroy_window(conn, helpwin);
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xcb_destroy_window(conn, grabwin);
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xcb_flush(conn);
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if (orientation == O_VERTICAL) {
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LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position);
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if (event->root_x == new_position) {
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LOG("Nothing changed, not updating anything\n");
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return 1;
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}
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int default_width = ws->rect.width / ws->cols;
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int old_unoccupied_x = get_unoccupied_x(ws);
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/* We pre-calculate the unoccupied space to see if we need to adapt sizes before
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* doing the resize */
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int new_unoccupied_x = old_unoccupied_x;
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if (old_unoccupied_x == 0)
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old_unoccupied_x = ws->rect.width;
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if (ws->width_factor[first] == 0)
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new_unoccupied_x += default_width;
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if (ws->width_factor[second] == 0)
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new_unoccupied_x += default_width;
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LOG("\n\n\n");
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LOG("old = %d, new = %d\n", old_unoccupied_x, new_unoccupied_x);
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/* If the space used for customly resized columns has changed we need to adapt the
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* other customly resized columns, if any */
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if (new_unoccupied_x != old_unoccupied_x)
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for (int col = 0; col < ws->cols; col++) {
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if (ws->width_factor[col] == 0)
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continue;
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LOG("Updating other column (%d) (current width_factor = %f)\n", col, ws->width_factor[col]);
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ws->width_factor[col] = (ws->width_factor[col] * old_unoccupied_x) / new_unoccupied_x;
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LOG("to %f\n", ws->width_factor[col]);
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}
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LOG("old_unoccupied_x = %d\n", old_unoccupied_x);
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LOG("Updating first (before = %f)\n", ws->width_factor[first]);
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/* Convert 0 (for default width_factor) to actual numbers */
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if (ws->width_factor[first] == 0)
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ws->width_factor[first] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
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LOG("middle = %f\n", ws->width_factor[first]);
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int old_width = ws->width_factor[first] * old_unoccupied_x;
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LOG("first->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
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ws->width_factor[first] *= (float)(old_width + (new_position - event->root_x)) / old_width;
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LOG("-> %f\n", ws->width_factor[first]);
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LOG("Updating second (before = %f)\n", ws->width_factor[second]);
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if (ws->width_factor[second] == 0)
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ws->width_factor[second] = ((float)ws->rect.width / ws->cols) / new_unoccupied_x;
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LOG("middle = %f\n", ws->width_factor[second]);
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old_width = ws->width_factor[second] * old_unoccupied_x;
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LOG("second->width = %d, new_position = %d, event->root_x = %d\n", old_width, new_position, event->root_x);
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ws->width_factor[second] *= (float)(old_width - (new_position - event->root_x)) / old_width;
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LOG("-> %f\n", ws->width_factor[second]);
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LOG("new unoccupied_x = %d\n", get_unoccupied_x(ws));
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LOG("\n\n\n");
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} else {
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#if 0
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LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position);
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if (event->root_y == new_position) {
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LOG("Nothing changed, not updating anything\n");
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return 1;
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}
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/* Convert 0 (for default height_factor) to actual numbers */
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if (first->height_factor == 0)
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first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
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if (second->height_factor == 0)
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second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
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first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height;
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second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height;
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#endif
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}
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render_layout(conn);
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return 1;
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}
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