/* * 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 #include #include #include #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" /* * 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). * */ struct callback_params { resize_orientation_t orientation; Output *screen; 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); } /* * 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; } /* 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; } 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); 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); 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; } /* * Adjusts the container size factors according to the resizing parameters. * This is an abstraction used by resize_container. */ static void adjust_container_factors(float *factors, int ws_size, int unoccupied_size, int num_items, int first, int second, int pixels) { /* Find the current sizes */ int sizes[num_items]; for (int i = 0; i < num_items; ++i) sizes[i] = factors[i] == 0 ? ws_size / num_items : unoccupied_size * factors[i]; /* Adjust them */ sizes[first] += pixels; sizes[second] -= pixels; /* Calculate the new unoccupied size */ if (factors[first] == 0) unoccupied_size += ws_size / num_items; if (factors[second] == 0) unoccupied_size += ws_size / num_items; /* Calculate the new factors */ for (int i = 0; i < num_items; ++i) { if (factors[i] != 0 || i == first || i == second) factors[i] = (float)sizes[i] / unoccupied_size; } } /* * 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) { if (orientation == O_VERTICAL) { adjust_container_factors(ws->width_factor, ws->rect.width, get_unoccupied_x(ws), ws->cols, first, second, pixels); } else { adjust_container_factors(ws->height_factor, workspace_height(ws), get_unoccupied_y(ws), ws->rows, first, second, pixels); } render_layout(conn); }