248 lines
12 KiB
C
248 lines
12 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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* layout.c: Functions handling layout/drawing of window decorations
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*
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <xcb/xcb.h>
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#include "font.h"
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#include "i3.h"
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#include "xcb.h"
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#include "table.h"
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#include "util.h"
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#include "xinerama.h"
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/*
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* For resizing containers (= cells), we need to know the space which is unoccupied by "default"
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* windows. The resized containers will be rendered relatively to this space, meaning that newly
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* created columns/rows after a container was resized will start with their normal size.
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*
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*/
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Rect get_unoccupied_space(Workspace *workspace) {
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printf("getting unoccupied space\n");
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float default_factor_w = ((float)workspace->rect.width / (float)workspace->cols) / (float)workspace->rect.width;
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float default_factor_h = (workspace->rect.height / workspace->rows) / workspace->rect.height;
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Rect result = {0, 0, workspace->rect.width, workspace->rect.height};
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printf("default factor is %f and %f\n", default_factor_w, default_factor_h);
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printf("start w = %d, h = %d\n", result.width, result.height);
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/* TODO: colspan/rowspan*/
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for (int cols = 0; cols < workspace->cols; cols++)
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for (int rows = 0; rows < workspace->rows; rows++) {
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printf("oh hai. wf[%d][%d] = %f\n", cols, rows, workspace->table[cols][rows]->width_factor);
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if (workspace->table[cols][rows]->width_factor == 0)
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result.width -= workspace->rect.width * default_factor_w;
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if (workspace->table[cols][rows]->height_factor == 0)
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result.height -= workspace->rect.height * default_factor_h;
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}
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/* If every container is using the default factor, we have the whole space available */
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if (result.width == 0)
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result.width = workspace->rect.width;
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if (result.height == 0)
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result.height = workspace->rect.height;
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printf("unoccupied x = %d, unoccupied y = %d\n", result.width, result.height);
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return result;
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}
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/*
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* (Re-)draws window decorations for a given Client
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*
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*/
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void decorate_window(xcb_connection_t *conn, Client *client) {
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uint32_t mask = 0;
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uint32_t values[3];
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i3Font *font = load_font(conn, pattern);
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uint32_t background_color,
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text_color,
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border_color;
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if (client->container->currently_focused == client) {
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background_color = get_colorpixel(conn, client->frame, "#285577");
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text_color = get_colorpixel(conn, client->frame, "#ffffff");
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border_color = get_colorpixel(conn, client->frame, "#4c7899");
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} else {
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background_color = get_colorpixel(conn, client->frame, "#222222");
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text_color = get_colorpixel(conn, client->frame, "#888888");
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border_color = get_colorpixel(conn, client->frame, "#333333");
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}
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/* Our plan is the following:
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- Draw a rect around the whole client in background_color
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- Draw two lines in a lighter color
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- Draw the window’s title
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Note that xcb_image_text apparently adds 1xp border around the font? Can anyone confirm this?
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*/
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/* Draw a green rectangle around the window */
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mask = XCB_GC_FOREGROUND;
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values[0] = background_color;
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xcb_change_gc(conn, client->titlegc, mask, values);
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xcb_rectangle_t rect = {0, 0, client->rect.width, client->rect.height};
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xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &rect);
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/* Draw the lines */
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/* TODO: this needs to be more beautiful somewhen. maybe stdarg + change_gc(gc, ...) ? */
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#define DRAW_LINE(colorpixel, x, y, to_x, to_y) { \
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uint32_t draw_values[1]; \
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draw_values[0] = colorpixel; \
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xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND, draw_values); \
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xcb_point_t points[] = {{x, y}, {to_x, to_y}}; \
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xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 2, points); \
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}
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DRAW_LINE(border_color, 2, 0, client->rect.width, 0);
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DRAW_LINE(border_color, 2, font->height + 3, 2 + client->rect.width, font->height + 3);
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/* Draw the font */
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mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
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values[0] = text_color;
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values[1] = background_color;
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values[2] = font->id;
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xcb_change_gc(conn, client->titlegc, mask, values);
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/* TODO: utf8? */
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char *label;
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asprintf(&label, "(%08x) %.*s", client->frame, client->name_len, client->name);
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xcb_void_cookie_t text_cookie = xcb_image_text_8_checked(conn, strlen(label), client->frame,
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client->titlegc, 3 /* X */, font->height /* Y = baseline of font */, label);
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check_error(conn, text_cookie, "Could not draw client's title");
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free(label);
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}
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static void render_container(xcb_connection_t *connection, Container *container) {
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Client *client;
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i3Font *font = load_font(connection, pattern);
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if (container->mode == MODE_DEFAULT) {
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int num_clients = 0;
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CIRCLEQ_FOREACH(client, &(container->clients), clients)
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num_clients++;
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printf("got %d clients in this default container.\n", num_clients);
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int current_client = 0;
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CIRCLEQ_FOREACH(client, &(container->clients), clients) {
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/* TODO: at the moment, every column/row is screen / num_cols. This
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* needs to be changed to "percentage of the screen" by
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* default and adjustable by the user if necessary.
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*/
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/* Check if we changed client->x or client->y by updating it…
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* Note the bitwise OR instead of logical OR to force evaluation of both statements */
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if (client->force_reconfigure |
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(client->rect.x != (client->rect.x = container->x)) |
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(client->rect.y != (client->rect.y = container->y +
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(container->height / num_clients) * current_client))) {
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printf("frame needs to be pushed to %dx%d\n", client->rect.x, client->rect.y);
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/* Note: We can use a pointer to client->x like an array of uint32_ts
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because it is followed by client->y by definition */
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xcb_configure_window(connection, client->frame,
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XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, &(client->rect.x));
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}
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/* TODO: vertical default layout */
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if (client->force_reconfigure |
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(client->rect.width != (client->rect.width = container->width)) |
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(client->rect.height != (client->rect.height = container->height / num_clients))) {
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printf("resizing client to %d x %d\n", client->rect.width, client->rect.height);
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xcb_configure_window(connection, client->frame,
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XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
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&(client->rect.width));
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/* Adjust the position of the child inside its frame.
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* The coordinates of the child are relative to its frame, we
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* add a border of 2 pixel to each value */
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uint32_t mask = XCB_CONFIG_WINDOW_X |
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XCB_CONFIG_WINDOW_Y |
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XCB_CONFIG_WINDOW_WIDTH |
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XCB_CONFIG_WINDOW_HEIGHT;
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uint32_t values[4] = {2, /* x */
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font->height + 2 + 2, /* y */
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client->rect.width - (2 + 2), /* width */
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client->rect.height - ((font->height + 2 + 2) + 2)}; /* height */
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printf("child will be at %dx%d with size %dx%d\n",
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values[0], values[1], values[2], values[3]);
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xcb_configure_window(connection, client->child, mask, values);
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}
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if (client->force_reconfigure)
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client->force_reconfigure = false;
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current_client++;
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}
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} else {
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/* TODO: Implement stacking */
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}
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}
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void render_layout(xcb_connection_t *connection) {
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i3Screen *screen;
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TAILQ_FOREACH(screen, &virtual_screens, screens) {
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/* r_ws (rendering workspace) is just a shortcut to the Workspace being currently rendered */
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Workspace *r_ws = &(workspaces[screen->current_workspace]);
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printf("Rendering screen %d\n", screen->num);
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if (r_ws->fullscreen_client != NULL)
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/* This is easy: A client has entered fullscreen mode, so we don’t render at all */
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continue;
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int width = r_ws->rect.width;
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int height = r_ws->rect.height;
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int x = r_ws->rect.x;
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int y = r_ws->rect.y;
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printf("got %d rows and %d cols\n", r_ws->rows, r_ws->cols);
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printf("each of them therefore is %d px width and %d px height\n",
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width / r_ws->cols, height / r_ws->rows);
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Rect space = get_unoccupied_space(r_ws);
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printf("got %d / %d unoc space\n", space.width, space.height);
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/* Go through the whole table and render what’s necessary */
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for (int cols = 0; cols < r_ws->cols; cols++)
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for (int rows = 0; rows < r_ws->rows; rows++) {
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Container *container = r_ws->table[cols][rows];
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printf("container has %d colspan, %d rowspan\n",
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container->colspan, container->rowspan);
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printf("container at %d, %d\n", x, y);
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/* Update position of the container */
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container->row = rows;
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container->col = cols;
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container->x = x;
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container->y = y;
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if (container->width_factor == 0)
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container->width = (width / r_ws->cols) * container->colspan;
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else container->width = space.width * container->width_factor;
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container->height = (height / r_ws->rows) * container->rowspan;
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/* Render it */
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render_container(connection, container);
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x += container->width;
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}
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}
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xcb_flush(connection);
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}
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