Initial pass on HiDPI support

include/config.h

@@ -81,6 +81,7 @@ struct output_config {
 	int enabled;
 	int width, height;
 	int x, y;
+    int scale;
 	char *background;
 	char *background_option;
 };

sway/commands.c

@@ -1585,6 +1585,7 @@ static struct cmd_results *cmd_output(int argc, char **argv) {
 	output->x = output->y = output->width = output->height = -1;
 	output->name = strdup(name);
 	output->enabled = -1;
+	output->scale = 1;
 
 	// TODO: atoi doesn't handle invalid numbers
 
@@ -1642,6 +1643,11 @@ static struct cmd_results *cmd_output(int argc, char **argv) {
 			}
 			output->x = x;
 			output->y = y;
+		} else if (strcasecmp(command, "scale") == 0) {
+			if (++i >= argc) {
+				return cmd_results_new(CMD_INVALID, "output", "Missing scale parameter.");
+			}
+			output->scale = atoi(argv[i]);
 		} else if (strcasecmp(command, "background") == 0 || strcasecmp(command, "bg") == 0) {
 			wordexp_t p;
 			if (++i >= argc) {

sway/config.c

@@ -867,6 +867,9 @@ void apply_output_config(struct output_config *oc, swayc_t *output) {
 		struct wlc_size new_size = { .w = oc->width, .h = oc->height };
 		wlc_output_set_resolution(output->handle, &new_size);
 	}
+	if (oc && oc->scale != 1) {
+		wlc_output_set_scale(output->handle, (int32_t)oc->scale);
+	}
 
 	// Find position for it
 	if (oc && oc->x != -1 && oc->y != -1) {

sway/container.c

@@ -102,7 +102,8 @@ static void update_root_geometry() {
 // New containers
 
 swayc_t *new_output(wlc_handle handle) {
-	const struct wlc_size *size = wlc_output_get_resolution(handle);
+	struct wlc_size size;
+	wlc_output_get_scaled_size(handle, &size);
 	const char *name = wlc_output_get_name(handle);
 	// Find current outputs to see if this already exists
 	{
@@ -148,8 +149,8 @@ swayc_t *new_output(wlc_handle handle) {
 	swayc_t *output = new_swayc(C_OUTPUT);
 	output->handle = handle;
 	output->name = name ? strdup(name) : NULL;
-	output->width = size->w;
-	output->height = size->h;
+	output->width = size.w;
+	output->height = size.h;
 	output->unmanaged = create_list();
 	output->bg_pid = 0;
 

sway/handlers.c

@@ -56,7 +56,8 @@ static struct background_config *if_background_find_config(struct wl_client *cli
 }
 
 static struct wlc_geometry compute_panel_geometry(struct panel_config *config) {
-	const struct wlc_size resolution = *wlc_output_get_resolution(config->output);
+	struct wlc_size resolution;
+	wlc_output_get_scaled_size(config->output, &resolution);
 	const struct wlc_geometry *old = wlc_view_get_geometry(config->handle);
 	struct wlc_geometry new;
 

sway/layout.c

@@ -406,20 +406,21 @@ static void update_border_geometry_floating(swayc_t *c, struct wlc_geometry *geo
 	c->actual_geometry = g;
 
 	swayc_t *output = swayc_parent_by_type(c, C_OUTPUT);
-	const struct wlc_size *res = wlc_output_get_resolution(output->handle);
+	struct wlc_size res;
+	wlc_output_get_scaled_size(output->handle, &res);
 
 	switch (c->border_type) {
 	case B_NONE:
 		break;
 	case B_PIXEL:
-		adjust_border_geometry(c, &g, res, c->border_thickness,
+		adjust_border_geometry(c, &g, &res, c->border_thickness,
 			c->border_thickness, c->border_thickness, c->border_thickness);
 		break;
 	case B_NORMAL:
 	{
 		int title_bar_height = config->font_height + 4; // borders + padding
 
-		adjust_border_geometry(c, &g, res, c->border_thickness,
+		adjust_border_geometry(c, &g, &res, c->border_thickness,
 			c->border_thickness, title_bar_height, c->border_thickness);
 
 		struct wlc_geometry title_bar = {
@@ -545,13 +546,15 @@ void update_geometry(swayc_t *container) {
 		gap = update_gap_geometry(container, &geometry);
 	}
 
+	swayc_t *output = swayc_parent_by_type(container, C_OUTPUT);
+	struct wlc_size size;
+	wlc_output_get_scaled_size(output->handle, &size);
+
 	if (swayc_is_fullscreen(container)) {
-		swayc_t *output = swayc_parent_by_type(container, C_OUTPUT);
-		const struct wlc_size *size = wlc_output_get_resolution(output->handle);
 		geometry.origin.x = 0;
 		geometry.origin.y = 0;
-		geometry.size.w = size->w;
-		geometry.size.h = size->h;
+		geometry.size.w = size.w;
+		geometry.size.h = size.h;
 		if (op->focused == workspace) {
 			wlc_view_bring_to_front(container->handle);
 		}
@@ -576,7 +579,9 @@ void update_geometry(swayc_t *container) {
 					border_left = 0;
 				}
 
-				if (geometry.origin.x + geometry.size.w == workspace->x + workspace->width) {
+				if (geometry.origin.x + geometry.size.w == size.w ||
+						geometry.size.w == container->x + container->width) {
+					// should work for swaybar at right
 					border_right = 0;
 				}
 			}
@@ -586,7 +591,9 @@ void update_geometry(swayc_t *container) {
 					border_top = 0;
 				}
 
-				if (geometry.origin.y + geometry.size.h == workspace->y + workspace->height) {
+				if (geometry.origin.y + geometry.size.h == size.h ||
+						geometry.size.h == container->y + container->height) {
+					// this works for swaybar at bottom
 					border_bottom = 0;
 				}
 			}
@@ -721,7 +728,8 @@ static void arrange_windows_r(swayc_t *container, double width, double height) {
 		return;
 	case C_OUTPUT:
 		{
-			struct wlc_size resolution = *wlc_output_get_resolution(container->handle);
+			struct wlc_size resolution;
+			wlc_output_get_scaled_size(container->handle, &resolution);
 			width = resolution.w; height = resolution.h;
 			// output must have correct size due to e.g. seamless mouse,
 			// but a workspace might be smaller depending on panels.