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671 lines
19 KiB
671 lines
19 KiB
#include <errno.h>
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#include <limits.h>
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#include <math.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 <strings.h>
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#include <wlr/util/edges.h>
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#include <wlr/util/log.h>
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#include "sway/commands.h"
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#include "sway/tree/arrange.h"
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#include "sway/tree/view.h"
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#include "sway/tree/workspace.h"
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#include "log.h"
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#define AXIS_HORIZONTAL (WLR_EDGE_LEFT | WLR_EDGE_RIGHT)
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#define AXIS_VERTICAL (WLR_EDGE_TOP | WLR_EDGE_BOTTOM)
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static const int MIN_SANE_W = 100, MIN_SANE_H = 60;
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enum resize_unit {
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RESIZE_UNIT_PX,
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RESIZE_UNIT_PPT,
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RESIZE_UNIT_DEFAULT,
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RESIZE_UNIT_INVALID,
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};
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struct resize_amount {
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int amount;
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enum resize_unit unit;
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};
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static enum resize_unit parse_resize_unit(const char *unit) {
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if (strcasecmp(unit, "px") == 0) {
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return RESIZE_UNIT_PX;
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}
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if (strcasecmp(unit, "ppt") == 0) {
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return RESIZE_UNIT_PPT;
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}
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if (strcasecmp(unit, "default") == 0) {
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return RESIZE_UNIT_DEFAULT;
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}
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return RESIZE_UNIT_INVALID;
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}
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// Parse arguments such as "10", "10px" or "10 px".
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// Returns the number of arguments consumed.
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static int parse_resize_amount(int argc, char **argv,
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struct resize_amount *amount) {
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char *err;
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amount->amount = (int)strtol(argv[0], &err, 10);
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if (*err) {
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// e.g. 10px
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amount->unit = parse_resize_unit(err);
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return 1;
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}
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if (argc == 1) {
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amount->unit = RESIZE_UNIT_DEFAULT;
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return 1;
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}
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// Try the second argument
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amount->unit = parse_resize_unit(argv[1]);
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if (amount->unit == RESIZE_UNIT_INVALID) {
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amount->unit = RESIZE_UNIT_DEFAULT;
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return 1;
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}
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return 2;
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}
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static void calculate_constraints(int *min_width, int *max_width,
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int *min_height, int *max_height) {
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struct sway_container *con = config->handler_context.container;
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if (config->floating_minimum_width == -1) { // no minimum
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*min_width = 0;
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} else if (config->floating_minimum_width == 0) { // automatic
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*min_width = 75;
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} else {
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*min_width = config->floating_minimum_width;
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}
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if (config->floating_minimum_height == -1) { // no minimum
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*min_height = 0;
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} else if (config->floating_minimum_height == 0) { // automatic
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*min_height = 50;
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} else {
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*min_height = config->floating_minimum_height;
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}
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if (config->floating_maximum_width == -1 || !con->workspace) { // no max
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*max_width = INT_MAX;
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} else if (config->floating_maximum_width == 0) { // automatic
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*max_width = con->workspace->width;
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} else {
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*max_width = config->floating_maximum_width;
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}
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if (config->floating_maximum_height == -1 || !con->workspace) { // no max
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*max_height = INT_MAX;
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} else if (config->floating_maximum_height == 0) { // automatic
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*max_height = con->workspace->height;
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} else {
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*max_height = config->floating_maximum_height;
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}
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}
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static uint32_t parse_resize_axis(const char *axis) {
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if (strcasecmp(axis, "width") == 0 || strcasecmp(axis, "horizontal") == 0) {
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return AXIS_HORIZONTAL;
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}
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if (strcasecmp(axis, "height") == 0 || strcasecmp(axis, "vertical") == 0) {
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return AXIS_VERTICAL;
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}
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if (strcasecmp(axis, "up") == 0) {
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return WLR_EDGE_TOP;
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}
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if (strcasecmp(axis, "down") == 0) {
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return WLR_EDGE_BOTTOM;
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}
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if (strcasecmp(axis, "left") == 0) {
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return WLR_EDGE_LEFT;
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}
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if (strcasecmp(axis, "right") == 0) {
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return WLR_EDGE_RIGHT;
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}
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return WLR_EDGE_NONE;
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}
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static bool is_horizontal(uint32_t axis) {
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return axis & (WLR_EDGE_LEFT | WLR_EDGE_RIGHT);
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}
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static int parallel_coord(struct sway_container *c, uint32_t axis) {
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return is_horizontal(axis) ? c->x : c->y;
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}
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static int parallel_size(struct sway_container *c, uint32_t axis) {
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return is_horizontal(axis) ? c->width : c->height;
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}
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static void container_recursive_resize(struct sway_container *container,
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double amount, enum wlr_edges edge) {
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bool layout_match = true;
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wlr_log(WLR_DEBUG, "Resizing %p with amount: %f", container, amount);
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if (edge & (WLR_EDGE_LEFT | WLR_EDGE_RIGHT)) {
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container->width += amount;
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layout_match = container->layout == L_HORIZ;
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} else if (edge & (WLR_EDGE_TOP | WLR_EDGE_BOTTOM)) {
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container->height += amount;
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layout_match = container->layout == L_VERT;
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}
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if (container->children) {
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for (int i = 0; i < container->children->length; i++) {
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struct sway_container *child = container->children->items[i];
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double amt = layout_match ?
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amount / container->children->length : amount;
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container_recursive_resize(child, amt, edge);
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}
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}
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}
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static void resize_tiled(struct sway_container *parent, int amount,
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uint32_t axis) {
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struct sway_container *focused = parent;
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if (!parent) {
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return;
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}
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enum sway_container_layout parallel_layout =
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is_horizontal(axis) ? L_HORIZ : L_VERT;
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int minor_weight = 0;
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int major_weight = 0;
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while (parent) {
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list_t *siblings = container_get_siblings(parent);
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if (container_parent_layout(parent) == parallel_layout) {
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for (int i = 0; i < siblings->length; i++) {
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struct sway_container *sibling = siblings->items[i];
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int sibling_pos = parallel_coord(sibling, axis);
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int focused_pos = parallel_coord(focused, axis);
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int parent_pos = parallel_coord(parent, axis);
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if (sibling_pos != focused_pos) {
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if (sibling_pos < parent_pos) {
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minor_weight++;
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} else if (sibling_pos > parent_pos) {
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major_weight++;
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}
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}
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}
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if (major_weight || minor_weight) {
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break;
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}
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}
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parent = parent->parent;
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}
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if (!parent) {
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// Can't resize in this direction
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return;
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}
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// Implement up/down/left/right direction by zeroing one of the weights
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if (axis == WLR_EDGE_TOP || axis == WLR_EDGE_LEFT) {
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major_weight = 0;
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} else if (axis == WLR_EDGE_RIGHT || axis == WLR_EDGE_BOTTOM) {
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minor_weight = 0;
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}
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bool horizontal = is_horizontal(axis);
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int min_sane = horizontal ? MIN_SANE_W : MIN_SANE_H;
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//TODO: Ensure rounding is done in such a way that there are NO pixel leaks
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// ^ ?????
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list_t *siblings = container_get_siblings(parent);
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for (int i = 0; i < siblings->length; i++) {
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struct sway_container *sibling = siblings->items[i];
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int sibling_pos = parallel_coord(sibling, axis);
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int focused_pos = parallel_coord(focused, axis);
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int parent_pos = parallel_coord(parent, axis);
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int sibling_size = parallel_size(sibling, axis);
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int parent_size = parallel_size(parent, axis);
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if (sibling_pos != focused_pos) {
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if (sibling_pos < parent_pos && minor_weight) {
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double pixels = -amount / minor_weight;
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if (major_weight && (sibling_size + pixels / 2) < min_sane) {
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return; // Too small
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} else if (!major_weight && sibling_size + pixels < min_sane) {
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return; // Too small
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}
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} else if (sibling_pos > parent_pos && major_weight) {
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double pixels = -amount / major_weight;
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if (minor_weight && (sibling_size + pixels / 2) < min_sane) {
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return; // Too small
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} else if (!minor_weight && sibling_size + pixels < min_sane) {
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return; // Too small
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}
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}
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} else {
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double pixels = amount;
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if (parent_size + pixels < min_sane) {
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return; // Too small
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}
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}
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}
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enum wlr_edges minor_edge = horizontal ? WLR_EDGE_LEFT : WLR_EDGE_TOP;
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enum wlr_edges major_edge = horizontal ? WLR_EDGE_RIGHT : WLR_EDGE_BOTTOM;
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for (int i = 0; i < siblings->length; i++) {
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struct sway_container *sibling = siblings->items[i];
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int sibling_pos = parallel_coord(sibling, axis);
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int focused_pos = parallel_coord(focused, axis);
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int parent_pos = parallel_coord(parent, axis);
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if (sibling_pos != focused_pos) {
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if (sibling_pos < parent_pos && minor_weight) {
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double pixels = -1 * amount;
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pixels /= minor_weight;
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if (major_weight) {
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container_recursive_resize(sibling, pixels / 2, major_edge);
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} else {
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container_recursive_resize(sibling, pixels, major_edge);
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}
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} else if (sibling_pos > parent_pos && major_weight) {
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double pixels = -1 * amount;
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pixels /= major_weight;
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if (minor_weight) {
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container_recursive_resize(sibling, pixels / 2, minor_edge);
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} else {
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container_recursive_resize(sibling, pixels, minor_edge);
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}
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}
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} else {
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if (major_weight != 0 && minor_weight != 0) {
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double pixels = amount;
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pixels /= 2;
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container_recursive_resize(parent, pixels, minor_edge);
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container_recursive_resize(parent, pixels, major_edge);
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} else if (major_weight) {
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container_recursive_resize(parent, amount, major_edge);
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} else if (minor_weight) {
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container_recursive_resize(parent, amount, minor_edge);
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}
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}
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}
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if (parent->parent) {
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arrange_container(parent->parent);
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} else {
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arrange_workspace(parent->workspace);
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}
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}
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void container_resize_tiled(struct sway_container *parent,
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enum wlr_edges edge, int amount) {
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resize_tiled(parent, amount, edge);
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}
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/**
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* Implement `resize <grow|shrink>` for a floating container.
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*/
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static struct cmd_results *resize_adjust_floating(uint32_t axis,
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struct resize_amount *amount) {
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struct sway_container *con = config->handler_context.container;
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int grow_width = 0, grow_height = 0;
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if (is_horizontal(axis)) {
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grow_width = amount->amount;
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} else {
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grow_height = amount->amount;
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}
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// Make sure we're not adjusting beyond floating min/max size
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int min_width, max_width, min_height, max_height;
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calculate_constraints(&min_width, &max_width, &min_height, &max_height);
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if (con->width + grow_width < min_width) {
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grow_width = min_width - con->width;
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} else if (con->width + grow_width > max_width) {
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grow_width = max_width - con->width;
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}
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if (con->height + grow_height < min_height) {
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grow_height = min_height - con->height;
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} else if (con->height + grow_height > max_height) {
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grow_height = max_height - con->height;
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}
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int grow_x = 0, grow_y = 0;
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if (axis == AXIS_HORIZONTAL) {
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grow_x = -grow_width / 2;
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} else if (axis == AXIS_VERTICAL) {
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grow_y = -grow_height / 2;
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} else if (axis == WLR_EDGE_TOP) {
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grow_y = -grow_height;
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} else if (axis == WLR_EDGE_LEFT) {
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grow_x = -grow_width;
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}
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if (grow_x == 0 && grow_y == 0) {
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return cmd_results_new(CMD_INVALID, "Cannot resize any further");
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}
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con->x += grow_x;
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con->y += grow_y;
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con->width += grow_width;
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con->height += grow_height;
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con->content_x += grow_x;
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con->content_y += grow_y;
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con->content_width += grow_width;
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con->content_height += grow_height;
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arrange_container(con);
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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/**
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* Implement `resize <grow|shrink>` for a tiled container.
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*/
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static struct cmd_results *resize_adjust_tiled(uint32_t axis,
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struct resize_amount *amount) {
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struct sway_container *current = config->handler_context.container;
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if (amount->unit == RESIZE_UNIT_DEFAULT) {
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amount->unit = RESIZE_UNIT_PPT;
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}
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if (amount->unit == RESIZE_UNIT_PPT) {
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float pct = amount->amount / 100.0f;
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if (is_horizontal(axis)) {
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amount->amount = (float)current->width * pct;
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} else {
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amount->amount = (float)current->height * pct;
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}
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}
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double old_width = current->width;
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double old_height = current->height;
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resize_tiled(current, amount->amount, axis);
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if (current->width == old_width && current->height == old_height) {
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return cmd_results_new(CMD_INVALID, "Cannot resize any further");
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}
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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/**
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* Implement `resize set` for a tiled container.
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*/
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static struct cmd_results *resize_set_tiled(struct sway_container *con,
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struct resize_amount *width, struct resize_amount *height) {
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if (width->amount) {
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if (width->unit == RESIZE_UNIT_PPT ||
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width->unit == RESIZE_UNIT_DEFAULT) {
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// Convert to px
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struct sway_container *parent = con->parent;
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while (parent && parent->layout != L_HORIZ) {
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parent = parent->parent;
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}
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if (parent) {
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width->amount = parent->width * width->amount / 100;
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} else {
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width->amount = con->workspace->width * width->amount / 100;
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}
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width->unit = RESIZE_UNIT_PX;
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}
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if (width->unit == RESIZE_UNIT_PX) {
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resize_tiled(con, width->amount - con->width, AXIS_HORIZONTAL);
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}
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}
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if (height->amount) {
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if (height->unit == RESIZE_UNIT_PPT ||
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height->unit == RESIZE_UNIT_DEFAULT) {
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// Convert to px
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struct sway_container *parent = con->parent;
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while (parent && parent->layout != L_VERT) {
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parent = parent->parent;
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}
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if (parent) {
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height->amount = parent->height * height->amount / 100;
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} else {
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height->amount = con->workspace->height * height->amount / 100;
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}
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height->unit = RESIZE_UNIT_PX;
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}
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if (height->unit == RESIZE_UNIT_PX) {
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resize_tiled(con, height->amount - con->height, AXIS_VERTICAL);
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}
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}
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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/**
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* Implement `resize set` for a floating container.
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*/
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static struct cmd_results *resize_set_floating(struct sway_container *con,
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struct resize_amount *width, struct resize_amount *height) {
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int min_width, max_width, min_height, max_height, grow_width = 0, grow_height = 0;
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calculate_constraints(&min_width, &max_width, &min_height, &max_height);
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if (width->amount) {
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switch (width->unit) {
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case RESIZE_UNIT_PPT:
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// Convert to px
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width->amount = con->workspace->width * width->amount / 100;
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width->unit = RESIZE_UNIT_PX;
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// Falls through
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case RESIZE_UNIT_PX:
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case RESIZE_UNIT_DEFAULT:
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width->amount = fmax(min_width, fmin(width->amount, max_width));
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grow_width = width->amount - con->width;
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con->x -= grow_width / 2;
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con->width = width->amount;
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break;
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case RESIZE_UNIT_INVALID:
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sway_assert(false, "invalid width unit");
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break;
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}
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}
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if (height->amount) {
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switch (height->unit) {
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case RESIZE_UNIT_PPT:
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// Convert to px
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height->amount = con->workspace->height * height->amount / 100;
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height->unit = RESIZE_UNIT_PX;
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// Falls through
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case RESIZE_UNIT_PX:
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case RESIZE_UNIT_DEFAULT:
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height->amount = fmax(min_height, fmin(height->amount, max_height));
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grow_height = height->amount - con->height;
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con->y -= grow_height / 2;
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con->height = height->amount;
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break;
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case RESIZE_UNIT_INVALID:
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sway_assert(false, "invalid height unit");
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break;
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}
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}
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con->content_x -= grow_width / 2;
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con->content_y -= grow_height / 2;
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con->content_width += grow_width;
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con->content_height += grow_height;
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arrange_container(con);
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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/**
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* resize set <args>
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*
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* args: [width] <width> [px|ppt]
|
|
* : height <height> [px|ppt]
|
|
* : [width] <width> [px|ppt] [height] <height> [px|ppt]
|
|
*/
|
|
static struct cmd_results *cmd_resize_set(int argc, char **argv) {
|
|
struct cmd_results *error;
|
|
if ((error = checkarg(argc, "resize", EXPECTED_AT_LEAST, 1))) {
|
|
return error;
|
|
}
|
|
const char usage[] = "Expected 'resize set [width] <width> [px|ppt]' or "
|
|
"'resize set height <height> [px|ppt]' or "
|
|
"'resize set [width] <width> [px|ppt] [height] <height> [px|ppt]'";
|
|
|
|
// Width
|
|
struct resize_amount width = {0};
|
|
if (argc >= 2 && !strcmp(argv[0], "width") && strcmp(argv[1], "height")) {
|
|
argc--; argv++;
|
|
}
|
|
if (strcmp(argv[0], "height")) {
|
|
int num_consumed_args = parse_resize_amount(argc, argv, &width);
|
|
argc -= num_consumed_args;
|
|
argv += num_consumed_args;
|
|
if (width.unit == RESIZE_UNIT_INVALID) {
|
|
return cmd_results_new(CMD_INVALID, usage);
|
|
}
|
|
}
|
|
|
|
// Height
|
|
struct resize_amount height = {0};
|
|
if (argc) {
|
|
if (argc >= 2 && !strcmp(argv[0], "height")) {
|
|
argc--; argv++;
|
|
}
|
|
int num_consumed_args = parse_resize_amount(argc, argv, &height);
|
|
argc -= num_consumed_args;
|
|
argv += num_consumed_args;
|
|
if (width.unit == RESIZE_UNIT_INVALID) {
|
|
return cmd_results_new(CMD_INVALID, usage);
|
|
}
|
|
}
|
|
|
|
// If 0, don't resize that dimension
|
|
struct sway_container *con = config->handler_context.container;
|
|
if (width.amount <= 0) {
|
|
width.amount = con->width;
|
|
}
|
|
if (height.amount <= 0) {
|
|
height.amount = con->height;
|
|
}
|
|
|
|
if (container_is_floating(con)) {
|
|
return resize_set_floating(con, &width, &height);
|
|
}
|
|
return resize_set_tiled(con, &width, &height);
|
|
}
|
|
|
|
/**
|
|
* resize <grow|shrink> <args>
|
|
*
|
|
* args: <direction>
|
|
* args: <direction> <amount> <unit>
|
|
* args: <direction> <amount> <unit> or <amount> <other_unit>
|
|
*/
|
|
static struct cmd_results *cmd_resize_adjust(int argc, char **argv,
|
|
int multiplier) {
|
|
const char usage[] = "Expected 'resize grow|shrink <direction> "
|
|
"[<amount> px|ppt [or <amount> px|ppt]]'";
|
|
uint32_t axis = parse_resize_axis(*argv);
|
|
if (axis == WLR_EDGE_NONE) {
|
|
return cmd_results_new(CMD_INVALID, usage);
|
|
}
|
|
--argc; ++argv;
|
|
|
|
// First amount
|
|
struct resize_amount first_amount;
|
|
if (argc) {
|
|
int num_consumed_args = parse_resize_amount(argc, argv, &first_amount);
|
|
argc -= num_consumed_args;
|
|
argv += num_consumed_args;
|
|
if (first_amount.unit == RESIZE_UNIT_INVALID) {
|
|
return cmd_results_new(CMD_INVALID, usage);
|
|
}
|
|
} else {
|
|
first_amount.amount = 10;
|
|
first_amount.unit = RESIZE_UNIT_DEFAULT;
|
|
}
|
|
|
|
// "or"
|
|
if (argc) {
|
|
if (strcmp(*argv, "or") != 0) {
|
|
return cmd_results_new(CMD_INVALID, usage);
|
|
}
|
|
--argc; ++argv;
|
|
}
|
|
|
|
// Second amount
|
|
struct resize_amount second_amount;
|
|
if (argc) {
|
|
int num_consumed_args = parse_resize_amount(argc, argv, &second_amount);
|
|
argc -= num_consumed_args;
|
|
argv += num_consumed_args;
|
|
if (second_amount.unit == RESIZE_UNIT_INVALID) {
|
|
return cmd_results_new(CMD_INVALID, usage);
|
|
}
|
|
} else {
|
|
second_amount.unit = RESIZE_UNIT_INVALID;
|
|
}
|
|
|
|
first_amount.amount *= multiplier;
|
|
second_amount.amount *= multiplier;
|
|
|
|
struct sway_container *con = config->handler_context.container;
|
|
if (container_is_floating(con)) {
|
|
// Floating containers can only resize in px. Choose an amount which
|
|
// uses px, with fallback to an amount that specified no unit.
|
|
if (first_amount.unit == RESIZE_UNIT_PX) {
|
|
return resize_adjust_floating(axis, &first_amount);
|
|
} else if (second_amount.unit == RESIZE_UNIT_PX) {
|
|
return resize_adjust_floating(axis, &second_amount);
|
|
} else if (first_amount.unit == RESIZE_UNIT_DEFAULT) {
|
|
return resize_adjust_floating(axis, &first_amount);
|
|
} else if (second_amount.unit == RESIZE_UNIT_DEFAULT) {
|
|
return resize_adjust_floating(axis, &second_amount);
|
|
} else {
|
|
return cmd_results_new(CMD_INVALID,
|
|
"Floating containers cannot use ppt measurements");
|
|
}
|
|
}
|
|
|
|
// For tiling, prefer ppt -> default -> px
|
|
if (first_amount.unit == RESIZE_UNIT_PPT) {
|
|
return resize_adjust_tiled(axis, &first_amount);
|
|
} else if (second_amount.unit == RESIZE_UNIT_PPT) {
|
|
return resize_adjust_tiled(axis, &second_amount);
|
|
} else if (first_amount.unit == RESIZE_UNIT_DEFAULT) {
|
|
return resize_adjust_tiled(axis, &first_amount);
|
|
} else if (second_amount.unit == RESIZE_UNIT_DEFAULT) {
|
|
return resize_adjust_tiled(axis, &second_amount);
|
|
} else {
|
|
return resize_adjust_tiled(axis, &first_amount);
|
|
}
|
|
}
|
|
|
|
struct cmd_results *cmd_resize(int argc, char **argv) {
|
|
if (!root->outputs->length) {
|
|
return cmd_results_new(CMD_INVALID,
|
|
"Can't run this command while there's no outputs connected.");
|
|
}
|
|
struct sway_container *current = config->handler_context.container;
|
|
if (!current) {
|
|
return cmd_results_new(CMD_INVALID, "Cannot resize nothing");
|
|
}
|
|
|
|
struct cmd_results *error;
|
|
if ((error = checkarg(argc, "resize", EXPECTED_AT_LEAST, 2))) {
|
|
return error;
|
|
}
|
|
|
|
if (strcasecmp(argv[0], "set") == 0) {
|
|
return cmd_resize_set(argc - 1, &argv[1]);
|
|
}
|
|
if (strcasecmp(argv[0], "grow") == 0) {
|
|
return cmd_resize_adjust(argc - 1, &argv[1], 1);
|
|
}
|
|
if (strcasecmp(argv[0], "shrink") == 0) {
|
|
return cmd_resize_adjust(argc - 1, &argv[1], -1);
|
|
}
|
|
|
|
const char usage[] = "Expected 'resize <shrink|grow> "
|
|
"<width|height|up|down|left|right> [<amount>] [px|ppt]'";
|
|
|
|
return cmd_results_new(CMD_INVALID, usage);
|
|
}
|