/* * vim:ts=8:expandtab * * i3 - an improved dynamic tiling window manager * * © 2009 Michael Stapelberg and contributors * * See file LICENSE for license information. * * layout.c: Functions handling layout/drawing of window decorations * */ #include #include #include #include #include #include "config.h" #include "font.h" #include "i3.h" #include "xcb.h" #include "table.h" #include "util.h" #include "xinerama.h" #include "layout.h" /* This macro copies the old value of the given variable, changes the variable to contain the new one and returns true if it changed. Note that when combining multiple HAS_CHANGED statements, you need to use different variables. If someone by chance knows why this is necessary (order of expressions in gcc?) and/or can come up with a fix, please mail me. */ #define HAS_CHANGED(temp, value, new) (temp = value, temp != (value = new)) static int old_value_1; static int old_value_2; /* * Gets the unoccupied space (= space which is available for windows which were resized by the user) * for the given row. This is necessary to render both, customly resized windows and never touched * windows correctly, meaning that the aspect ratio will be maintained when opening new windows. * */ int get_unoccupied_x(Workspace *workspace, int row) { int unoccupied = workspace->rect.width; float default_factor = ((float)workspace->rect.width / workspace->cols) / workspace->rect.width; printf("get_unoccupied_x(), starting with %d, default_factor = %f\n", unoccupied, default_factor); for (int cols = 0; cols < workspace->cols;) { Container *con = workspace->table[cols][row]; printf("width_factor[%d][%d] = %f, colspan = %d\n", cols, row, con->width_factor, con->colspan); if (con->width_factor == 0) unoccupied -= workspace->rect.width * default_factor * con->colspan; cols += con->colspan; } assert(unoccupied != 0); printf("unoccupied space: %d\n", unoccupied); return unoccupied; } /* See get_unoccupied_x() */ int get_unoccupied_y(Workspace *workspace, int col) { int unoccupied = workspace->rect.height; float default_factor = ((float)workspace->rect.height / workspace->rows) / workspace->rect.height; printf("get_unoccupied_y(), starting with %d, default_factor = %f\n", unoccupied, default_factor); for (int rows = 0; rows < workspace->rows;) { Container *con = workspace->table[col][rows]; printf("height_factor[%d][%d] = %f, rowspan %d\n", col, rows, con->height_factor, con->rowspan); if (con->height_factor == 0) unoccupied -= workspace->rect.height * default_factor * con->rowspan; rows += con->rowspan; } assert(unoccupied != 0); printf("unoccupied space: %d\n", unoccupied); return unoccupied; } /* * Redecorates the given client correctly by checking if it’s in a stacking container and * re-rendering the stack window or just calling decorate_window if it’s not in a stacking * container. * */ void redecorate_window(xcb_connection_t *conn, Client *client) { if (client->container->mode == MODE_STACK) { render_container(conn, client->container); xcb_flush(conn); } else decorate_window(conn, client, client->frame, client->titlegc, 0); } /* * (Re-)draws window decorations for a given Client onto the given drawable/graphic context. * When in stacking mode, the window decorations are drawn onto an own window. * */ void decorate_window(xcb_connection_t *conn, Client *client, xcb_drawable_t drawable, xcb_gcontext_t gc, int offset) { i3Font *font = load_font(conn, config.font); uint32_t background_color, text_color, border_color; /* Clients without a container (docks) won’t get decorated */ if (client->container == NULL) return; if (client->container->currently_focused == client) { /* Distinguish if the window is currently focused… */ if (CUR_CELL->currently_focused == client) background_color = get_colorpixel(conn, client, client->frame, "#285577"); /* …or if it is the focused window in a not focused container */ else background_color = get_colorpixel(conn, client, client->frame, "#555555"); text_color = get_colorpixel(conn, client, client->frame, "#ffffff"); border_color = get_colorpixel(conn, client, client->frame, "#4c7899"); } else { background_color = get_colorpixel(conn, client, client->frame, "#222222"); text_color = get_colorpixel(conn, client, client->frame, "#888888"); border_color = get_colorpixel(conn, client, client->frame, "#333333"); } /* Our plan is the following: - Draw a rect around the whole client in background_color - Draw two lines in a lighter color - Draw the window’s title */ /* Draw a rectangle in background color around the window */ xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, background_color); xcb_rectangle_t rect = {0, offset, client->rect.width, offset + client->rect.height}; xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect); /* Draw the lines */ xcb_draw_line(conn, drawable, gc, border_color, 2, offset, client->rect.width, offset); xcb_draw_line(conn, drawable, gc, border_color, 2, offset + font->height + 3, 2 + client->rect.width, offset + font->height + 3); /* Draw the font */ uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT; uint32_t values[] = { text_color, background_color, font->id }; xcb_change_gc(conn, gc, mask, values); /* TODO: utf8? */ char *label; asprintf(&label, "(%08x) %.*s", client->frame, client->name_len, client->name); xcb_void_cookie_t text_cookie = xcb_image_text_8_checked(conn, strlen(label), drawable, gc, 3 /* X */, offset + font->height /* Y = baseline of font */, label); check_error(conn, text_cookie, "Could not draw client's title"); free(label); } /* * Pushes the client’s x and y coordinates to X11 * */ static void reposition_client(xcb_connection_t *connection, Client *client) { printf("frame needs to be pushed to %dx%d\n", client->rect.x, client->rect.y); /* Note: We can use a pointer to client->x like an array of uint32_ts because it is followed by client->y by definition */ xcb_configure_window(connection, client->frame, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, &(client->rect.x)); } /* * Pushes the client’s width/height to X11 and resizes the child window * */ static void resize_client(xcb_connection_t *connection, Client *client) { i3Font *font = load_font(connection, config.font); printf("resizing client to %d x %d\n", client->rect.width, client->rect.height); xcb_configure_window(connection, client->frame, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, &(client->rect.width)); /* Adjust the position of the child inside its frame. * The coordinates of the child are relative to its frame, we * add a border of 2 pixel to each value */ uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT; Rect *rect = &(client->child_rect); switch (client->container->mode) { case MODE_STACK: rect->x = 2; rect->y = 0; rect->width = client->rect.width - (2 + 2); rect->height = client->rect.height - 2; break; default: if (client->titlebar_position == TITLEBAR_OFF) { rect->x = 0; rect->y = 0; rect->width = client->rect.width; rect->height = client->rect.height; } else { rect->x = 2; rect->y = font->height + 2 + 2; rect->width = client->rect.width - (2 + 2); rect->height = client->rect.height - ((font->height + 2 + 2) + 2); } break; } printf("child will be at %dx%d with size %dx%d\n", rect->x, rect->y, rect->width, rect->height); xcb_configure_window(connection, client->child, mask, &(rect->x)); /* After configuring a child window we need to fake a configure_notify_event according to ICCCM 4.2.3. This seems rather broken, especially since X sends exactly the same configure_notify_event automatically according to xtrace. Anyone knows details? */ xcb_configure_notify_event_t event; event.event = client->child; event.window = client->child; event.response_type = XCB_CONFIGURE_NOTIFY; event.x = rect->x; event.y = rect->y; event.width = rect->width; event.height = rect->height; event.border_width = 0; event.above_sibling = XCB_NONE; event.override_redirect = false; xcb_send_event(connection, false, client->child, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char*)&event); } /* * Renders the given container. Is called by render_layout() or individually (for example * when focus changes in a stacking container) * */ void render_container(xcb_connection_t *connection, Container *container) { Client *client; int num_clients = 0, current_client = 0; if (container->currently_focused == NULL) return; CIRCLEQ_FOREACH(client, &(container->clients), clients) num_clients++; if (container->mode == MODE_DEFAULT) { printf("got %d clients in this default container.\n", num_clients); CIRCLEQ_FOREACH(client, &(container->clients), clients) { /* Check if we changed client->x or client->y by updating it. * Note the bitwise OR instead of logical OR to force evaluation of both statements */ if (client->force_reconfigure | HAS_CHANGED(old_value_1, client->rect.x, container->x) | HAS_CHANGED(old_value_2, client->rect.y, container->y + (container->height / num_clients) * current_client)) reposition_client(connection, client); /* TODO: vertical default layout */ if (client->force_reconfigure | HAS_CHANGED(old_value_1, client->rect.width, container->width) | HAS_CHANGED(old_value_2, client->rect.height, container->height / num_clients)) resize_client(connection, client); client->force_reconfigure = false; current_client++; } } else { i3Font *font = load_font(connection, config.font); int decoration_height = (font->height + 2 + 2); struct Stack_Window *stack_win = &(container->stack_win); /* Check if we need to remap our stack title window, it gets unmapped when the container is empty in src/handlers.c:unmap_notify() */ if (stack_win->height == 0) xcb_map_window(connection, stack_win->window); /* Check if we need to reconfigure our stack title window */ if (HAS_CHANGED(old_value_1, stack_win->width, container->width) | HAS_CHANGED(old_value_2, stack_win->height, decoration_height * num_clients)) { xcb_configure_window(connection, stack_win->window, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, &(stack_win->width)); uint32_t values[] = { XCB_STACK_MODE_ABOVE }; xcb_configure_window(connection, stack_win->window, XCB_CONFIG_WINDOW_STACK_MODE, values); } /* Reconfigure the currently focused client, if necessary. It is the only visible one */ client = container->currently_focused; /* Check if we changed client->x or client->y by updating it. * Note the bitwise OR instead of logical OR to force evaluation of both statements */ if (client->force_reconfigure | HAS_CHANGED(old_value_1, client->rect.x, container->x) | HAS_CHANGED(old_value_2, client->rect.y, container->y + (decoration_height * num_clients))) reposition_client(connection, client); if (client->force_reconfigure | HAS_CHANGED(old_value_1, client->rect.width, container->width) | HAS_CHANGED(old_value_2, client->rect.height, container->height - (decoration_height * num_clients))) resize_client(connection, client); client->force_reconfigure = false; uint32_t values[] = { XCB_STACK_MODE_ABOVE }; xcb_configure_window(connection, client->frame, XCB_CONFIG_WINDOW_STACK_MODE, values); /* Render the decorations of all clients */ CIRCLEQ_FOREACH(client, &(container->clients), clients) decorate_window(connection, client, stack_win->window, stack_win->gc, current_client++ * decoration_height); } } static void render_bars(xcb_connection_t *connection, Workspace *r_ws, int width, int height) { Client *client; SLIST_FOREACH(client, &(r_ws->dock_clients), dock_clients) { if (client->force_reconfigure | HAS_CHANGED(old_value_1, client->rect.x, 0) | HAS_CHANGED(old_value_2, client->rect.y, height)) reposition_client(connection, client); if (client->force_reconfigure | HAS_CHANGED(old_value_1, client->rect.width, width) | HAS_CHANGED(old_value_2, client->rect.height, client->desired_height)) resize_client(connection, client); client->force_reconfigure = false; height += client->desired_height; } } void render_layout(xcb_connection_t *connection) { i3Screen *screen; TAILQ_FOREACH(screen, &virtual_screens, screens) { /* r_ws (rendering workspace) is just a shortcut to the Workspace being currently rendered */ Workspace *r_ws = &(workspaces[screen->current_workspace]); printf("Rendering screen %d\n", screen->num); if (r_ws->fullscreen_client != NULL) /* This is easy: A client has entered fullscreen mode, so we don’t render at all */ continue; int width = r_ws->rect.width; int height = r_ws->rect.height; /* Reserve space for dock clients */ Client *client; SLIST_FOREACH(client, &(r_ws->dock_clients), dock_clients) height -= client->desired_height; printf("got %d rows and %d cols\n", r_ws->rows, r_ws->cols); int xoffset[r_ws->rows]; int yoffset[r_ws->cols]; /* Initialize offsets */ for (int cols = 0; cols < r_ws->cols; cols++) yoffset[cols] = r_ws->rect.y; for (int rows = 0; rows < r_ws->rows; rows++) xoffset[rows] = r_ws->rect.x; /* Go through the whole table and render what’s necessary */ for (int cols = 0; cols < r_ws->cols; cols++) for (int rows = 0; rows < r_ws->rows; rows++) { Container *container = r_ws->table[cols][rows]; printf("\n========\ncontainer has %d colspan, %d rowspan\n", container->colspan, container->rowspan); printf("container at %d, %d\n", xoffset[rows], yoffset[cols]); /* Update position of the container */ container->row = rows; container->col = cols; container->x = xoffset[rows]; container->y = yoffset[cols]; if (container->width_factor == 0) container->width = (width / r_ws->cols); else container->width = get_unoccupied_x(r_ws, rows) * container->width_factor; container->width *= container->colspan; if (container->height_factor == 0) container->height = (height / r_ws->rows); else container->height = get_unoccupied_y(r_ws, cols) * container->height_factor; container->height *= container->rowspan; /* Render the container if it is not empty */ render_container(connection, container); xoffset[rows] += container->width; yoffset[cols] += container->height; printf("==========\n"); } render_bars(connection, r_ws, width, height); } xcb_flush(connection); }