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https://github.com/swaywm/sway.git
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90c2d631e2
This makes the behavior of floating containers more consistent with i3. The coordinates of the container are scaled when the size of the workspace it is on changes or when the container is moved between workspaces on different outputs. For scratchpad containers, add a new state that preserves the dimensions of the last output the window appeared on. This is necessary because after a container is hidden in the scratchpad, we expect it to be in the same relative position on the output when it reappears. We can't just use the container's attached workspace because that workspace's dimensions might have been changed or the workspace as a whole could have been destroyed.
374 lines
11 KiB
C
374 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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struct wlr_box prev_box;
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workspace_get_box(workspace, &prev_box);
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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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struct wlr_box workspace_box;
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workspace_get_box(workspace, &workspace_box);
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floating_fix_coordinates(floater, &prev_box, &workspace_box);
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// Set transformation for scratchpad windows.
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if (floater->scratchpad) {
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struct wlr_box output_box;
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output_get_box(output, &output_box);
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floater->transform = output_box;
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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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struct wlr_box output_box;
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wlr_output_layout_get_box(root->output_layout,
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output->wlr_output, &output_box);
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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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struct wlr_box layout_box;
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wlr_output_layout_get_box(root->output_layout, NULL, &layout_box);
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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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