+#include "xinerama.h"
+#include "layout.h"
+#include "client.h"
+#include "floating.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) {
+ uint32_t 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 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; cols++) {
+ LOG("width_factor[%d] = %f\n", cols, workspace->width_factor[cols]);
+
+ if (workspace->width_factor[cols] == 0)
+ unoccupied -= workspace->rect.width * default_factor;
+ }
+
+ 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; rows++) {
+ LOG("height_factor[%d] = %f\n", rows, workspace->height_factor[rows]);
+ if (workspace->height_factor[rows] == 0)
+ unoccupied -= workspace->rect.height * default_factor;
+ }
+
+ 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 != NULL && 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;
+ struct Colortriple *color;
+
+ /* Clients without a container (docks) won’t get decorated */
+ if (client->dock)
+ return;
+
+ LOG("redecorating child %08x\n", client->child);
+ if (client_is_floating(client) || client->container->currently_focused == client) {
+ /* Distinguish if the window is currently focused… */
+ if (client_is_floating(client) || CUR_CELL->currently_focused == client)
+ color = &(config.client.focused);
+ /* …or if it is the focused window in a not focused container */
+ else color = &(config.client.focused_inactive);
+ } else color = &(config.client.unfocused);
+
+ /* Our plan is the following:
+ - Draw a rect around the whole client in color->background
+ - 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, color->background);
+
+ /* In stacking mode, we only render the rect for this specific decoration */
+ if (client->container != NULL && client->container->mode == MODE_STACK) {
+ /* 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, offset, client->container->width, offset + decoration_height };
+ xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
+ } else {
+ xcb_rectangle_t rect = {0, 0, client->rect.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, color->border, 0, offset, client->rect.width, offset);
+ xcb_draw_line(conn, drawable, gc, color->border, 2, offset + font->height + 3,
+ client->rect.width - 3, 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[] = { color->text, color->background, 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
+ *
+ */
+void reposition_client(xcb_connection_t *conn, Client *client) {
+ i3Screen *screen;
+
+ 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));
+
+ if (!client_is_floating(client))
+ return;
+
+ /* If the client is floating, we need to check if we moved it to a different workspace */
+ if (client->workspace->screen == (screen = get_screen_containing(client->rect.x, client->rect.y)))
+ return;
+
+ if (screen == NULL) {
+ LOG("Boundary checking disabled, no screen found for (%d, %d)\n", client->rect.x, client->rect.y);
+ return;
+ }
+
+ LOG("Client is on workspace %p with screen %p\n", client->workspace, client->workspace->screen);
+ LOG("but screen at %d, %d is %p\n", client->rect.x, client->rect.y, screen);
+ floating_assign_to_workspace(client, &workspaces[screen->current_workspace]);
+ LOG("fixed that\n");
+}
+
+/*
+ * Pushes the client’s width/height to X11 and resizes the child window
+ *
+ */
+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);