mirror of
https://github.com/NickHu/sway
synced 2024-12-27 21:58:11 +01:00
a047b5ee4a
Pending state is currently inlined directly in the container struct, while the current state is in a state struct. A side-effect of this is that it is not immediately obvious that pending double-buffered state is accessed, nor is it obvious what state is double-buffered. Instead, use the state struct for both current and pending.
368 lines
11 KiB
C
368 lines
11 KiB
C
#define _POSIX_C_SOURCE 200809L
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#include <ctype.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wlr/types/wlr_output.h>
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#include <wlr/types/wlr_output_layout.h>
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#include "sway/tree/arrange.h"
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#include "sway/tree/container.h"
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#include "sway/output.h"
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#include "sway/tree/workspace.h"
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#include "sway/tree/view.h"
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#include "list.h"
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#include "log.h"
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static void apply_horiz_layout(list_t *children, struct wlr_box *parent) {
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if (!children->length) {
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return;
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}
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// Count the number of new windows we are resizing, and how much space
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// is currently occupied
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int new_children = 0;
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double current_width_fraction = 0;
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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current_width_fraction += child->width_fraction;
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if (child->width_fraction <= 0) {
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new_children += 1;
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}
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}
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// Calculate each height fraction
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double total_width_fraction = 0;
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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if (child->width_fraction <= 0) {
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if (current_width_fraction <= 0) {
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child->width_fraction = 1.0;
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} else if (children->length > new_children) {
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child->width_fraction = current_width_fraction /
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(children->length - new_children);
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} else {
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child->width_fraction = current_width_fraction;
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}
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}
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total_width_fraction += child->width_fraction;
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}
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// Normalize width fractions so the sum is 1.0
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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child->width_fraction /= total_width_fraction;
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}
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// Calculate gap size
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double inner_gap = 0;
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struct sway_container *child = children->items[0];
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struct sway_workspace *ws = child->pending.workspace;
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if (ws) {
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inner_gap = ws->gaps_inner;
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}
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// Descendants of tabbed/stacked containers don't have gaps
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struct sway_container *temp = child;
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while (temp) {
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enum sway_container_layout layout = container_parent_layout(temp);
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if (layout == L_TABBED || layout == L_STACKED) {
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inner_gap = 0;
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}
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temp = temp->pending.parent;
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}
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double total_gap = fmin(inner_gap * (children->length - 1),
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fmax(0, parent->width - MIN_SANE_W * children->length));
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double child_total_width = parent->width - total_gap;
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inner_gap = floor(total_gap / (children->length - 1));
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// Resize windows
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sway_log(SWAY_DEBUG, "Arranging %p horizontally", parent);
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double child_x = parent->x;
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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child->child_total_width = child_total_width;
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child->pending.x = child_x;
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child->pending.y = parent->y;
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child->pending.width = round(child->width_fraction * child_total_width);
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child->pending.height = parent->height;
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child_x += child->pending.width + inner_gap;
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// Make last child use remaining width of parent
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if (i == children->length - 1) {
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child->pending.width = parent->x + parent->width - child->pending.x;
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}
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}
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}
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static void apply_vert_layout(list_t *children, struct wlr_box *parent) {
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if (!children->length) {
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return;
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}
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// Count the number of new windows we are resizing, and how much space
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// is currently occupied
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int new_children = 0;
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double current_height_fraction = 0;
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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current_height_fraction += child->height_fraction;
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if (child->height_fraction <= 0) {
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new_children += 1;
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}
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}
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// Calculate each height fraction
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double total_height_fraction = 0;
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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if (child->height_fraction <= 0) {
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if (current_height_fraction <= 0) {
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child->height_fraction = 1.0;
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} else if (children->length > new_children) {
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child->height_fraction = current_height_fraction /
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(children->length - new_children);
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} else {
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child->height_fraction = current_height_fraction;
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}
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}
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total_height_fraction += child->height_fraction;
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}
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// Normalize height fractions so the sum is 1.0
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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child->height_fraction /= total_height_fraction;
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}
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// Calculate gap size
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double inner_gap = 0;
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struct sway_container *child = children->items[0];
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struct sway_workspace *ws = child->pending.workspace;
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if (ws) {
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inner_gap = ws->gaps_inner;
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}
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// Descendants of tabbed/stacked containers don't have gaps
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struct sway_container *temp = child;
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while (temp) {
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enum sway_container_layout layout = container_parent_layout(temp);
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if (layout == L_TABBED || layout == L_STACKED) {
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inner_gap = 0;
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}
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temp = temp->pending.parent;
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}
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double total_gap = fmin(inner_gap * (children->length - 1),
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fmax(0, parent->height - MIN_SANE_H * children->length));
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double child_total_height = parent->height - total_gap;
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inner_gap = floor(total_gap / (children->length - 1));
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// Resize windows
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sway_log(SWAY_DEBUG, "Arranging %p vertically", parent);
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double child_y = parent->y;
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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child->child_total_height = child_total_height;
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child->pending.x = parent->x;
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child->pending.y = child_y;
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child->pending.width = parent->width;
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child->pending.height = round(child->height_fraction * child_total_height);
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child_y += child->pending.height + inner_gap;
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// Make last child use remaining height of parent
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if (i == children->length - 1) {
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child->pending.height = parent->y + parent->height - child->pending.y;
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}
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}
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}
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static void apply_tabbed_layout(list_t *children, struct wlr_box *parent) {
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if (!children->length) {
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return;
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}
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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int parent_offset = child->view ? 0 : container_titlebar_height();
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child->pending.x = parent->x;
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child->pending.y = parent->y + parent_offset;
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child->pending.width = parent->width;
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child->pending.height = parent->height - parent_offset;
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}
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}
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static void apply_stacked_layout(list_t *children, struct wlr_box *parent) {
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if (!children->length) {
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return;
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}
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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int parent_offset = child->view ? 0 :
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container_titlebar_height() * children->length;
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child->pending.x = parent->x;
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child->pending.y = parent->y + parent_offset;
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child->pending.width = parent->width;
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child->pending.height = parent->height - parent_offset;
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}
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}
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static void arrange_floating(list_t *floating) {
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for (int i = 0; i < floating->length; ++i) {
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struct sway_container *floater = floating->items[i];
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arrange_container(floater);
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}
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}
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static void arrange_children(list_t *children,
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enum sway_container_layout layout, struct wlr_box *parent) {
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// Calculate x, y, width and height of children
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switch (layout) {
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case L_HORIZ:
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apply_horiz_layout(children, parent);
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break;
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case L_VERT:
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apply_vert_layout(children, parent);
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break;
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case L_TABBED:
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apply_tabbed_layout(children, parent);
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break;
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case L_STACKED:
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apply_stacked_layout(children, parent);
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break;
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case L_NONE:
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apply_horiz_layout(children, parent);
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break;
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}
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// Recurse into child containers
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for (int i = 0; i < children->length; ++i) {
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struct sway_container *child = children->items[i];
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arrange_container(child);
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}
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}
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void arrange_container(struct sway_container *container) {
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if (config->reloading) {
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return;
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}
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if (container->view) {
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view_autoconfigure(container->view);
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node_set_dirty(&container->node);
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return;
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}
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struct wlr_box box;
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container_get_box(container, &box);
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arrange_children(container->pending.children, container->pending.layout, &box);
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node_set_dirty(&container->node);
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}
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void arrange_workspace(struct sway_workspace *workspace) {
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if (config->reloading) {
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return;
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}
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if (!workspace->output) {
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// Happens when there are no outputs connected
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return;
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}
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struct sway_output *output = workspace->output;
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struct wlr_box *area = &output->usable_area;
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sway_log(SWAY_DEBUG, "Usable area for ws: %dx%d@%d,%d",
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area->width, area->height, area->x, area->y);
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bool first_arrange = workspace->width == 0 && workspace->height == 0;
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double prev_x = workspace->x - workspace->current_gaps.left;
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double prev_y = workspace->y - workspace->current_gaps.top;
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workspace->width = area->width;
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workspace->height = area->height;
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workspace->x = output->lx + area->x;
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workspace->y = output->ly + area->y;
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// Adjust any floating containers
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double diff_x = workspace->x - prev_x;
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double diff_y = workspace->y - prev_y;
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if (!first_arrange && (diff_x != 0 || diff_y != 0)) {
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for (int i = 0; i < workspace->floating->length; ++i) {
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struct sway_container *floater = workspace->floating->items[i];
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container_floating_translate(floater, diff_x, diff_y);
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double center_x = floater->pending.x + floater->pending.width / 2;
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double center_y = floater->pending.y + floater->pending.height / 2;
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struct wlr_box workspace_box;
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workspace_get_box(workspace, &workspace_box);
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if (!wlr_box_contains_point(&workspace_box, center_x, center_y)) {
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container_floating_move_to_center(floater);
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}
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}
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}
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workspace_add_gaps(workspace);
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node_set_dirty(&workspace->node);
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sway_log(SWAY_DEBUG, "Arranging workspace '%s' at %f, %f", workspace->name,
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workspace->x, workspace->y);
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if (workspace->fullscreen) {
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struct sway_container *fs = workspace->fullscreen;
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fs->pending.x = output->lx;
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fs->pending.y = output->ly;
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fs->pending.width = output->width;
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fs->pending.height = output->height;
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arrange_container(fs);
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} else {
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struct wlr_box box;
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workspace_get_box(workspace, &box);
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arrange_children(workspace->tiling, workspace->layout, &box);
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arrange_floating(workspace->floating);
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}
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}
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void arrange_output(struct sway_output *output) {
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if (config->reloading) {
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return;
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}
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const struct wlr_box *output_box = wlr_output_layout_get_box(
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root->output_layout, output->wlr_output);
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output->lx = output_box->x;
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output->ly = output_box->y;
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output->width = output_box->width;
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output->height = output_box->height;
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for (int i = 0; i < output->workspaces->length; ++i) {
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struct sway_workspace *workspace = output->workspaces->items[i];
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arrange_workspace(workspace);
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}
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}
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void arrange_root(void) {
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if (config->reloading) {
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return;
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}
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const struct wlr_box *layout_box =
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wlr_output_layout_get_box(root->output_layout, NULL);
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root->x = layout_box->x;
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root->y = layout_box->y;
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root->width = layout_box->width;
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root->height = layout_box->height;
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if (root->fullscreen_global) {
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struct sway_container *fs = root->fullscreen_global;
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fs->pending.x = root->x;
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fs->pending.y = root->y;
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fs->pending.width = root->width;
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fs->pending.height = root->height;
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arrange_container(fs);
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} else {
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for (int i = 0; i < root->outputs->length; ++i) {
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struct sway_output *output = root->outputs->items[i];
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arrange_output(output);
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}
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}
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}
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void arrange_node(struct sway_node *node) {
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switch (node->type) {
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case N_ROOT:
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arrange_root();
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break;
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case N_OUTPUT:
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arrange_output(node->sway_output);
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break;
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case N_WORKSPACE:
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arrange_workspace(node->sway_workspace);
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break;
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case N_CONTAINER:
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arrange_container(node->sway_container);
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break;
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}
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}
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