Rework tiling code based off Consortium

Taken from
https://github.com/SolusOS-discontinued/consortium/commit/b463e03f5bdeab307ceee6b969c681f29537c76d

3 files changed, 113 insertions, 2 deletions

diff --git a/src/ui/theme-parser.c b/src/ui/theme-parser.c
index c94e0e9a..dccb47ad 100644
--- a/src/ui/theme-parser.c
+++ b/src/ui/theme-parser.c
@@ -3136,6 +3136,28 @@ parse_style_set_element (GMarkupParseContext  *context,
           meta_frame_style_ref (frame_style);
           info->style_set->maximized_styles[frame_focus] = frame_style;
           break;
+        case META_FRAME_STATE_TILED_LEFT:
+          if (info->style_set->tiled_left_styles[frame_focus])
+            {
+              set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
+                         _("Style has already been specified for state %s focus %s"),
+                         state, focus);
+              return;
+            }
+          meta_frame_style_ref (frame_style);
+          info->style_set->tiled_left_styles[frame_focus] = frame_style;
+          break;
+        case META_FRAME_STATE_TILED_RIGHT:
+          if (info->style_set->tiled_right_styles[frame_focus])
+            {
+              set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
+                         _("Style has already been specified for state %s focus %s"),
+                         state, focus);
+              return;
+            }
+          meta_frame_style_ref (frame_style);
+          info->style_set->tiled_right_styles[frame_focus] = frame_style;
+          break;
         case META_FRAME_STATE_SHADED:
           if (info->style_set->shaded_styles[frame_resize][frame_focus])
             {
@@ -3158,6 +3180,28 @@ parse_style_set_element (GMarkupParseContext  *context,
           meta_frame_style_ref (frame_style);
           info->style_set->maximized_and_shaded_styles[frame_focus] = frame_style;
           break;
+        case META_FRAME_STATE_TILED_LEFT_AND_SHADED:
+          if (info->style_set->tiled_left_and_shaded_styles[frame_focus])
+            {
+              set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
+                         _("Style has already been specified for state %s focus %s"),
+                         state, focus);
+              return;
+            }
+          meta_frame_style_ref (frame_style);
+          info->style_set->tiled_left_and_shaded_styles[frame_focus] = frame_style;
+          break;
+        case META_FRAME_STATE_TILED_RIGHT_AND_SHADED:
+          if (info->style_set->tiled_right_and_shaded_styles[frame_focus])
+            {
+              set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
+                         _("Style has already been specified for state %s focus %s"),
+                         state, focus);
+              return;
+            }
+          meta_frame_style_ref (frame_style);
+          info->style_set->tiled_right_and_shaded_styles[frame_focus] = frame_style;
+          break;
         case META_FRAME_STATE_LAST:
           g_assert_not_reached ();
           break;
diff --git a/src/ui/theme.c b/src/ui/theme.c
index aa49963a..763f4f3a 100644
--- a/src/ui/theme.c
+++ b/src/ui/theme.c
@@ -851,7 +851,9 @@ meta_frame_layout_calc_geometry (const MetaFrameLayout  *layout,
       rect->visible.width = button_width;
       rect->visible.height = button_height;
 
-      if (flags & META_FRAME_MAXIMIZED)
+      if (flags & META_FRAME_MAXIMIZED ||
+          flags & META_FRAME_TILED_LEFT ||
+	  flags & META_FRAME_TILED_RIGHT)
         {
           rect->clickable.x = rect->visible.x;
           rect->clickable.y = rect->visible.y;
@@ -4995,7 +4997,11 @@ meta_frame_style_set_unref (MetaFrameStyleSet *style_set)
         }
 
       free_focus_styles (style_set->maximized_styles);
+      free_focus_styles (style_set->tiled_left_styles);
+      free_focus_styles (style_set->tiled_right_styles);
       free_focus_styles (style_set->maximized_and_shaded_styles);
+      free_focus_styles (style_set->tiled_left_and_shaded_styles);
+      free_focus_styles (style_set->tiled_right_and_shaded_styles);
 
       if (style_set->parent)
         meta_frame_style_set_unref (style_set->parent);
@@ -5047,9 +5053,21 @@ get_style (MetaFrameStyleSet *style_set,
           case META_FRAME_STATE_MAXIMIZED:
             styles = style_set->maximized_styles;
             break;
+          case META_FRAME_STATE_TILED_LEFT:
+            styles = style_set->tiled_left_styles;
+            break;
+          case META_FRAME_STATE_TILED_RIGHT:
+            styles = style_set->tiled_right_styles;
+            break;
           case META_FRAME_STATE_MAXIMIZED_AND_SHADED:
             styles = style_set->maximized_and_shaded_styles;
             break;
+          case META_FRAME_STATE_TILED_LEFT_AND_SHADED:
+            styles = style_set->tiled_left_and_shaded_styles;
+            break;
+          case META_FRAME_STATE_TILED_RIGHT_AND_SHADED:
+            styles = style_set->tiled_right_and_shaded_styles;
+            break;
           case META_FRAME_STATE_NORMAL:
           case META_FRAME_STATE_SHADED:
           case META_FRAME_STATE_LAST:
@@ -5059,6 +5077,19 @@ get_style (MetaFrameStyleSet *style_set,
 
         style = styles[focus];
 
+        /* Tiled states are optional, try falling back to non-tiled states */
+        if (style == NULL)
+          {
+            if (state == META_FRAME_STATE_TILED_LEFT ||
+                state == META_FRAME_STATE_TILED_RIGHT)
+              style = get_style (style_set, META_FRAME_STATE_NORMAL,
+                                 resize, focus);
+            else if (state == META_FRAME_STATE_TILED_LEFT_AND_SHADED ||
+                     state == META_FRAME_STATE_TILED_RIGHT_AND_SHADED)
+              style = get_style (style_set, META_FRAME_STATE_SHADED,
+                                 resize, focus);
+          }
+
         /* Try parent if we failed here */
         if (style == NULL && style_set->parent)
           style = get_style (style_set->parent, state, resize, focus);
@@ -5404,7 +5435,7 @@ theme_get_style (MetaTheme     *theme,
   if (style_set == NULL)
     return NULL;
 
-  switch (flags & (META_FRAME_MAXIMIZED | META_FRAME_SHADED))
+  switch (flags & (META_FRAME_MAXIMIZED | META_FRAME_SHADED | META_FRAME_TILED_LEFT | META_FRAME_TILED_RIGHT))
     {
     case 0:
       state = META_FRAME_STATE_NORMAL;
@@ -5412,12 +5443,24 @@ theme_get_style (MetaTheme     *theme,
     case META_FRAME_MAXIMIZED:
       state = META_FRAME_STATE_MAXIMIZED;
       break;
+    case META_FRAME_TILED_LEFT:
+      state = META_FRAME_STATE_TILED_LEFT;
+      break;
+    case META_FRAME_TILED_RIGHT:
+      state = META_FRAME_STATE_TILED_RIGHT;
+      break;
     case META_FRAME_SHADED:
       state = META_FRAME_STATE_SHADED;
       break;
     case (META_FRAME_MAXIMIZED | META_FRAME_SHADED):
       state = META_FRAME_STATE_MAXIMIZED_AND_SHADED;
       break;
+    case (META_FRAME_TILED_LEFT | META_FRAME_SHADED):
+      state = META_FRAME_STATE_TILED_LEFT_AND_SHADED;
+      break;
+    case (META_FRAME_TILED_RIGHT | META_FRAME_SHADED):
+      state = META_FRAME_STATE_TILED_RIGHT_AND_SHADED;
+      break;
     default:
       g_assert_not_reached ();
       state = META_FRAME_STATE_LAST; /* compiler */
@@ -6264,10 +6307,18 @@ meta_frame_state_from_string (const char *str)
     return META_FRAME_STATE_NORMAL;
   else if (strcmp ("maximized", str) == 0)
     return META_FRAME_STATE_MAXIMIZED;
+  else if (strcmp ("tiled_left", str) == 0)
+    return META_FRAME_STATE_TILED_LEFT;
+  else if (strcmp ("tiled_right", str) == 0)
+    return META_FRAME_STATE_TILED_RIGHT;
   else if (strcmp ("shaded", str) == 0)
     return META_FRAME_STATE_SHADED;
   else if (strcmp ("maximized_and_shaded", str) == 0)
     return META_FRAME_STATE_MAXIMIZED_AND_SHADED;
+  else if (strcmp ("tiled_left_and_shaded", str) == 0)
+    return META_FRAME_STATE_TILED_LEFT_AND_SHADED;
+  else if (strcmp ("tiled_right_and_shaded", str) == 0)
+    return META_FRAME_STATE_TILED_RIGHT_AND_SHADED;
   else
     return META_FRAME_STATE_LAST;
 }
@@ -6281,10 +6332,18 @@ meta_frame_state_to_string (MetaFrameState state)
       return "normal";
     case META_FRAME_STATE_MAXIMIZED:
       return "maximized";
+    case META_FRAME_STATE_TILED_LEFT:
+      return "tiled_left";
+    case META_FRAME_STATE_TILED_RIGHT:
+      return "tiled_right";
     case META_FRAME_STATE_SHADED:
       return "shaded";
     case META_FRAME_STATE_MAXIMIZED_AND_SHADED:
       return "maximized_and_shaded";
+    case META_FRAME_STATE_TILED_LEFT_AND_SHADED:
+      return "tiled_left_and_shaded";
+    case META_FRAME_STATE_TILED_RIGHT_AND_SHADED:
+      return "tiled_right_and_shaded";
     case META_FRAME_STATE_LAST:
       break;
     }
diff --git a/src/ui/theme.h b/src/ui/theme.h
index 89d41efe..c7437bdf 100644
--- a/src/ui/theme.h
+++ b/src/ui/theme.h
@@ -716,8 +716,12 @@ typedef enum
 {
   META_FRAME_STATE_NORMAL,
   META_FRAME_STATE_MAXIMIZED,
+  META_FRAME_STATE_TILED_LEFT,
+  META_FRAME_STATE_TILED_RIGHT,
   META_FRAME_STATE_SHADED,
   META_FRAME_STATE_MAXIMIZED_AND_SHADED,
+  META_FRAME_STATE_TILED_LEFT_AND_SHADED,
+  META_FRAME_STATE_TILED_RIGHT_AND_SHADED,
   META_FRAME_STATE_LAST
 } MetaFrameState;
 
@@ -754,8 +758,12 @@ struct _MetaFrameStyleSet
   MetaFrameStyleSet *parent;
   MetaFrameStyle *normal_styles[META_FRAME_RESIZE_LAST][META_FRAME_FOCUS_LAST];
   MetaFrameStyle *maximized_styles[META_FRAME_FOCUS_LAST];
+  MetaFrameStyle *tiled_left_styles[META_FRAME_FOCUS_LAST];
+  MetaFrameStyle *tiled_right_styles[META_FRAME_FOCUS_LAST];
   MetaFrameStyle *shaded_styles[META_FRAME_RESIZE_LAST][META_FRAME_FOCUS_LAST];
   MetaFrameStyle *maximized_and_shaded_styles[META_FRAME_FOCUS_LAST];
+  MetaFrameStyle *tiled_left_and_shaded_styles[META_FRAME_FOCUS_LAST];
+  MetaFrameStyle *tiled_right_and_shaded_styles[META_FRAME_FOCUS_LAST];
 };
 
 /**