/* * 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 #include "config.h" #include "i3.h" #include "xcb.h" #include "table.h" #include "util.h" #include "xinerama.h" #include "layout.h" /* * Updates *destination with new_value and returns true if it was changed or false * if it was the same * */ static bool update_if_necessary(uint32_t *destination, const uint32_t new_value) { int old_value = *destination; return ((*destination = new_value) != old_value); } /* * 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; LOG("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]; LOG("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); LOG("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; LOG("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]; LOG("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); LOG("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); /* We clear the frame to generate exposure events, because the color used in drawing may be different */ xcb_clear_area(conn, true, client->frame, 0, 0, client->rect.width, client->rect.height); } else decorate_window(conn, client, client->frame, client->titlegc, 0); xcb_flush(conn); } /* * (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); int decoration_height = font->height + 2 + 2; 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, "#285577"); /* …or if it is the focused window in a not focused container */ else background_color = get_colorpixel(conn, "#555555"); text_color = get_colorpixel(conn, "#ffffff"); border_color = get_colorpixel(conn, "#4c7899"); } else { background_color = get_colorpixel(conn, "#222222"); text_color = get_colorpixel(conn, "#888888"); border_color = get_colorpixel(conn, "#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); /* In stacking mode, we only render the rect for this specific decoration */ if (client->container->mode == MODE_STACK) { xcb_rectangle_t rect = {0, offset, client->container->width, offset + decoration_height }; xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect); } else { /* We need to use the container’s width because it is the more recent value - when in stacking mode, clients get reconfigured only on demand (the not active client is not reconfigured), so the client’s rect.width would be wrong */ xcb_rectangle_t rect = {0, 0, client->container->width, client->rect.height}; xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect); /* Draw the inner background to have a black frame around clients (such as mplayer) which cannot be resized exactly in our frames and therefore are centered */ xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000")); xcb_rectangle_t crect = {2, decoration_height, client->rect.width - (2 + 2), client->rect.height - 2 - decoration_height}; xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect); } /* 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); /* If the client has a title, we draw it */ if (client->name != NULL) { /* 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); /* name_len == -1 means this is a legacy application which does not specify _NET_WM_NAME, and we don’t handle the old window name (COMPOUND_TEXT) but only _NET_WM_NAME, which is UTF-8 */ if (client->name_len == -1) xcb_image_text_8(conn, strlen(client->name), drawable, gc, 3 /* X */, offset + font->height /* Y = baseline of font */, client->name); else xcb_image_text_16(conn, client->name_len, drawable, gc, 3 /* X */, offset + font->height /* Y = baseline of font */, (xcb_char2b_t*)client->name); } } /* * Pushes the client’s x and y coordinates to X11 * */ static void reposition_client(xcb_connection_t *conn, Client *client) { LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, 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(conn, 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 *conn, Client *client) { i3Font *font = load_font(conn, config.font); LOG("resizing client 0x%08x to %d x %d\n", client->frame, client->rect.width, client->rect.height); xcb_configure_window(conn, 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 != NULL ? client->container->mode : MODE_DEFAULT)) { 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; } /* Obey the ratio, if any */ if (client->proportional_height != 0 && client->proportional_width != 0) { LOG("proportional height = %d, width = %d\n", client->proportional_height, client->proportional_width); double new_height = rect->height + 1; int new_width = rect->width; while (new_height > rect->height) { new_height = ((double)client->proportional_height / client->proportional_width) * new_width; if (new_height > rect->height) new_width--; } /* Center the window */ rect->y += ceil(rect->height / 2) - floor(new_height / 2); rect->x += ceil(rect->width / 2) - floor(new_width / 2); rect->height = new_height; rect->width = new_width; LOG("new_height = %f, new_width = %d\n", new_height, new_width); } LOG("child will be at %dx%d with size %dx%d\n", rect->x, rect->y, rect->width, rect->height); xcb_configure_window(conn, client->child, mask, &(rect->x)); /* After configuring a child window we need to fake a configure_notify_event (see ICCCM 4.2.3). * This is necessary to inform the client of its position relative to the root window, * not relative to its frame (as done in the configure_notify_event by the x server). */ fake_absolute_configure_notify(conn, client); } /* * 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 *conn, 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) { LOG("got %d clients in this default container.\n", num_clients); CIRCLEQ_FOREACH(client, &(container->clients), clients) { /* If the client is in fullscreen mode, it does not get reconfigured */ if (container->workspace->fullscreen_client == client) { current_client++; continue; } /* 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 | update_if_necessary(&(client->rect.x), container->x) | update_if_necessary(&(client->rect.y), container->y + (container->height / num_clients) * current_client)) reposition_client(conn, client); /* TODO: vertical default layout */ if (client->force_reconfigure | update_if_necessary(&(client->rect.width), container->width) | update_if_necessary(&(client->rect.height), container->height / num_clients)) resize_client(conn, client); client->force_reconfigure = false; current_client++; } } else { i3Font *font = load_font(conn, 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->rect.height == 0) xcb_map_window(conn, stack_win->window); /* Check if we need to reconfigure our stack title window */ if (update_if_necessary(&(stack_win->rect.x), container->x) | update_if_necessary(&(stack_win->rect.y), container->y) | update_if_necessary(&(stack_win->rect.width), container->width) | update_if_necessary(&(stack_win->rect.height), decoration_height * num_clients)) { /* Configuration can happen in two slightly different ways: If there is no client in fullscreen mode, 5 parameters are passed (x, y, width, height, stack mode is set to above which means top-most position). If there is a fullscreen client, the fourth parameter is set to to the fullscreen window as sibling and the stack mode is set to below, which means that the stack_window will be placed just below the sibling, that is, under the fullscreen window. */ uint32_t values[] = { stack_win->rect.x, stack_win->rect.y, stack_win->rect.width, stack_win->rect.height, XCB_STACK_MODE_ABOVE, XCB_STACK_MODE_BELOW }; uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_STACK_MODE; /* If there is no fullscreen client, we raise the stack window */ if (container->workspace->fullscreen_client != NULL) { mask |= XCB_CONFIG_WINDOW_SIBLING; values[4] = container->workspace->fullscreen_client->frame; } xcb_configure_window(conn, stack_win->window, mask, values); } /* Reconfigure the currently focused client, if necessary. It is the only visible one */ client = container->currently_focused; /* Render the decorations of all clients */ CIRCLEQ_FOREACH(client, &(container->clients), clients) { /* If the client is in fullscreen mode, it does not get reconfigured */ if (container->workspace->fullscreen_client == client) { current_client++; continue; } /* 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 | update_if_necessary(&(client->rect.x), container->x) | update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients))) reposition_client(conn, client); if (client->force_reconfigure | update_if_necessary(&(client->rect.width), container->width) | update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients))) resize_client(conn, client); client->force_reconfigure = false; decorate_window(conn, client, stack_win->window, stack_win->gc, current_client++ * decoration_height); } } } static void render_bars(xcb_connection_t *conn, Workspace *r_ws, int width, int *height) { Client *client; SLIST_FOREACH(client, &(r_ws->screen->dock_clients), dock_clients) { LOG("client is at %d, should be at %d\n", client->rect.y, *height); if (client->force_reconfigure | update_if_necessary(&(client->rect.x), 0) | update_if_necessary(&(client->rect.y), *height)) reposition_client(conn, client); if (client->force_reconfigure | update_if_necessary(&(client->rect.width), width) | update_if_necessary(&(client->rect.height), client->desired_height)) resize_client(conn, client); client->force_reconfigure = false; LOG("desired_height = %d\n", client->desired_height); *height += client->desired_height; } } static void render_internal_bar(xcb_connection_t *conn, Workspace *r_ws, int width, int height) { LOG("Rendering internal bar\n"); i3Font *font = load_font(conn, config.font); i3Screen *screen = r_ws->screen; enum { SET_NORMAL = 0, SET_FOCUSED = 1 }; uint32_t background_color[2], text_color[2], border_color[2], black; char label[3]; black = get_colorpixel(conn, "#000000"); background_color[SET_NORMAL] = get_colorpixel(conn, "#222222"); text_color[SET_NORMAL] = get_colorpixel(conn, "#888888"); border_color[SET_NORMAL] = get_colorpixel(conn, "#333333"); background_color[SET_FOCUSED] = get_colorpixel(conn, "#285577"); text_color[SET_FOCUSED] = get_colorpixel(conn, "#ffffff"); border_color[SET_FOCUSED] = get_colorpixel(conn, "#4c7899"); /* Fill the whole bar in black */ xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, black); xcb_rectangle_t rect = {0, 0, width, height}; xcb_poly_fill_rectangle(conn, screen->bar, screen->bargc, 1, &rect); /* Set font */ xcb_change_gc_single(conn, screen->bargc, XCB_GC_FONT, font->id); int drawn = 0; for (int c = 0; c < 10; c++) { if (workspaces[c].screen != screen) continue; int set = (screen->current_workspace == c ? SET_FOCUSED : SET_NORMAL); xcb_draw_rect(conn, screen->bar, screen->bargc, border_color[set], drawn * height, 1, height - 2, height - 2); xcb_draw_rect(conn, screen->bar, screen->bargc, background_color[set], drawn * height + 1, 2, height - 4, height - 4); snprintf(label, sizeof(label), "%d", c+1); xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, text_color[set]); xcb_change_gc_single(conn, screen->bargc, XCB_GC_BACKGROUND, background_color[set]); xcb_image_text_8(conn, strlen(label), screen->bar, screen->bargc, drawn * height + 5 /* X */, font->height + 1 /* Y = baseline of font */, label); drawn++; } LOG("done rendering internal\n"); } /* * Modifies the event mask of all clients on the given workspace to either ignore or to handle * enter notifies. It is handy to ignore notifies because they will be sent when a window is mapped * under the cursor, thus when the user didn’t enter the window actively at all. * */ void ignore_enter_notify_forall(xcb_connection_t *conn, Workspace *workspace, bool ignore_enter_notify) { Client *client; uint32_t values[1]; LOG("Ignore enter_notify = %d\n", ignore_enter_notify); FOR_TABLE(workspace) CIRCLEQ_FOREACH(client, &(workspace->table[cols][rows]->clients), clients) { /* Change event mask for the decorations */ values[0] = FRAME_EVENT_MASK; if (ignore_enter_notify) values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW); xcb_change_window_attributes(conn, client->frame, XCB_CW_EVENT_MASK, values); /* Change event mask for the child itself */ values[0] = CHILD_EVENT_MASK; if (ignore_enter_notify) values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW); xcb_change_window_attributes(conn, client->child, XCB_CW_EVENT_MASK, values); } } /* * Renders the whole layout, that is: Go through each screen, each workspace, each container * and render each client. This also renders the bars. * * If you don’t need to render *everything*, you should call render_container on the container * you want to refresh. * */ void render_layout(xcb_connection_t *conn) { i3Screen *screen; i3Font *font = load_font(conn, config.font); 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]); LOG("Rendering screen %d\n", screen->num); int width = r_ws->rect.width; int height = r_ws->rect.height; /* Reserve space for dock clients */ Client *client; SLIST_FOREACH(client, &(screen->dock_clients), dock_clients) height -= client->desired_height; /* Space for the internal bar */ height -= (font->height + 6); LOG("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; dump_table(conn, r_ws); ignore_enter_notify_forall(conn, r_ws, true); /* Go through the whole table and render what’s necessary */ FOR_TABLE(r_ws) { Container *container = r_ws->table[cols][rows]; int single_width, single_height; LOG("\n"); LOG("========\n"); LOG("container has %d colspan, %d rowspan\n", container->colspan, container->rowspan); LOG("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; single_width = container->width; 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; single_height = container->height; container->height *= container->rowspan; /* Render the container if it is not empty */ render_container(conn, container); xoffset[rows] += single_width; yoffset[cols] += single_height; LOG("==========\n"); } ignore_enter_notify_forall(conn, r_ws, false); render_bars(conn, r_ws, width, &height); render_internal_bar(conn, r_ws, width, font->height + 6); } xcb_flush(conn); }