Add support to resize floating container in percentage

resize set is modified to accept both 'px' and 'ppt' height and width.

Fixes #2816.

docs/userguide

@@ -2302,7 +2302,7 @@ If you want to resize containers/windows using your keyboard, you can use the
 *Syntax*:
 -------------------------------------------------------
 resize grow|shrink <direction> [<px> px [or <ppt> ppt]]
-resize set <width> [px] <height> [px]
+resize set <width> [px | ppt] <height> [px | ppt]
 -------------------------------------------------------
 
 Direction can either be one of +up+, +down+, +left+ or +right+. Or you can be

include/commands.h

@@ -66,7 +66,7 @@ void cmd_move_con_to_workspace_number(I3_CMD, const char *which, const char *no_
  * Implementation of 'resize set <px> [px] <px> [px]'.
  *
  */
-void cmd_resize_set(I3_CMD, long cwidth, long cheight);
+void cmd_resize_set(I3_CMD, long cwidth, const char *mode_width, long cheight, const char *mode_height);
 
 /**
  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.

parser-specs/commands.spec

@@ -258,14 +258,16 @@ state RESIZE_SET:
       -> RESIZE_WIDTH
 
 state RESIZE_WIDTH:
-  'px'
+  mode_width = 'px', 'ppt'
       ->
   height = number
       -> RESIZE_HEIGHT
 
 state RESIZE_HEIGHT:
-  'px', end
-      -> call cmd_resize_set(&width, &height)
+  mode_height = 'px', 'ppt'
+      ->
+  end
+      -> call cmd_resize_set(&width, $mode_width, &height, $mode_height)
 
 # rename workspace <name> to <name>
 # rename workspace to <name>

src/commands.c

@@ -676,13 +676,13 @@ void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px,
 }
 
 /*
- * Implementation of 'resize set <px> [px] <px> [px]'.
+ * Implementation of 'resize set <width> [px | ppt] <height> [px | ppt]'.
  *
  */
-void cmd_resize_set(I3_CMD, long cwidth, long cheight) {
-    DLOG("resizing to %ldx%ld px\n", cwidth, cheight);
+void cmd_resize_set(I3_CMD, long cwidth, const char *mode_width, long cheight, const char *mode_height) {
+    DLOG("resizing to %ld %s x %ld %s\n", cwidth, mode_width, cheight, mode_height);
     if (cwidth <= 0 || cheight <= 0) {
-        ELOG("Resize failed: dimensions cannot be negative (was %ldx%ld)\n", cwidth, cheight);
+        ELOG("Resize failed: dimensions cannot be negative (was %ld %s x %ld %s)\n", cwidth, mode_width, cheight, mode_height);
         return;
     }
 
@@ -692,6 +692,13 @@ void cmd_resize_set(I3_CMD, long cwidth, long cheight) {
     TAILQ_FOREACH(current, &owindows, owindows) {
         Con *floating_con;
         if ((floating_con = con_inside_floating(current->con))) {
+            Con *output = con_get_output(floating_con);
+            if (mode_width && strcmp(mode_width, "ppt") == 0) {
+                cwidth = output->rect.width * ((double)cwidth / 100.0);
+            }
+            if (mode_height && strcmp(mode_height, "ppt") == 0) {
+                cheight = output->rect.height * ((double)cheight / 100.0);
+            }
             floating_resize(floating_con, cwidth, cheight);
         } else {
             ELOG("Resize failed: %p not a floating container\n", current->con);

testcases/t/252-floating-size.t

@@ -17,7 +17,13 @@
 # Test behavior of "resize <width> <height>" command.
 # Ticket: #1727
 # Bug still in: 4.10.2-1-gc0dbc5d
-use i3test;
+use i3test i3_config => <<EOT;
+# i3 config file (v4)
+font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
+
+fake-outputs 1333x999+0+0
+workspace ws output fake-0
+EOT
 
 ################################################################################
 # Check that setting floating windows size works
@@ -42,4 +48,54 @@ cmp_ok($content[0]->{rect}->{height}, '!=', $oldrect->{width}, 'height changed')
 cmp_ok($content[0]->{rect}->{width}, '==', 100, 'width changed to 100 px');
 cmp_ok($content[0]->{rect}->{height}, '==', 250, 'height changed to 250 px');
 
+################################################################################
+# Same but with ppt instead of px
+################################################################################
+
+kill_all_windows;
+$tmp = 'ws';
+cmd "workspace $tmp";
+open_floating_window;
+
+@content = @{get_ws($tmp)->{floating_nodes}};
+is(@content, 1, 'one floating node on this ws');
+
+$oldrect = $content[0]->{rect};
+
+cmd 'resize set 33 ppt 20 ppt';
+my $expected_width = int(0.33 * 1333);
+my $expected_height = int(0.2 * 999);
+
+@content = @{get_ws($tmp)->{floating_nodes}};
+cmp_ok($content[0]->{rect}->{x}, '==', $oldrect->{x}, 'x untouched');
+cmp_ok($content[0]->{rect}->{y}, '==', $oldrect->{y}, 'y untouched');
+cmp_ok($content[0]->{rect}->{width}, '!=', $oldrect->{width}, 'width changed');
+cmp_ok($content[0]->{rect}->{height}, '!=', $oldrect->{width}, 'height changed');
+cmp_ok($content[0]->{rect}->{width}, '==', $expected_width, "width changed to $expected_width px");
+cmp_ok($content[0]->{rect}->{height}, '==', $expected_height, "height changed to $expected_height px");
+
+################################################################################
+# Mix ppt and px in a single resize set command
+################################################################################
+
+cmd 'resize set 44 ppt 111 px';
+my $expected_width = int(0.44 * 1333);
+my $expected_height = 111;
+
+@content = @{get_ws($tmp)->{floating_nodes}};
+cmp_ok($content[0]->{rect}->{x}, '==', $oldrect->{x}, 'x untouched');
+cmp_ok($content[0]->{rect}->{y}, '==', $oldrect->{y}, 'y untouched');
+cmp_ok($content[0]->{rect}->{width}, '==', $expected_width, "width changed to $expected_width px");
+cmp_ok($content[0]->{rect}->{height}, '==', $expected_height, "height changed to $expected_height px");
+
+cmd 'resize set 222 px 100 ppt';
+my $expected_width = 222;
+my $expected_height = 999;
+
+@content = @{get_ws($tmp)->{floating_nodes}};
+cmp_ok($content[0]->{rect}->{x}, '==', $oldrect->{x}, 'x untouched');
+cmp_ok($content[0]->{rect}->{y}, '==', $oldrect->{y}, 'y untouched');
+cmp_ok($content[0]->{rect}->{width}, '==', $expected_width, "width changed to $expected_width px");
+cmp_ok($content[0]->{rect}->{height}, '==', $expected_height, "height changed to $expected_height px");
+
 done_testing;