Show tile flags in the editor canvas when we use Ctrl key/move tool

Added build_tile_flags_string() utility to create the string used in
to show the tile flags (XYD) on the status bar, the editor canvas,
etc.

src/app/CMakeLists.txt

@@ -696,6 +696,7 @@ add_library(app-lib
   util/range_utils.cpp
   util/readable_time.cpp
   util/resize_image.cpp
+  util/tile_flags_utils.cpp
   util/tileset_utils.cpp
   util/wrap_point.cpp
   xml_document.cpp

src/app/ui/editor/editor.cpp

@@ -54,6 +54,7 @@
 #include "app/ui/toolbar.h"
 #include "app/ui_context.h"
 #include "app/util/layer_utils.h"
+#include "app/util/tile_flags_utils.h"
 #include "base/chrono.h"
 #include "base/convert_to.h"
 #include "doc/doc.h"
@@ -1196,7 +1197,8 @@ void Editor::drawTileNumbers(ui::Graphics* g, const Cel* cel)
 
   const doc::Grid grid = getSite().grid();
   const gfx::Size tileSize = editorToScreen(grid.tileToCanvas(gfx::Rect(0, 0, 1, 1))).size();
-  if (tileSize.h > g->font()->height()) {
+  const int th = g->font()->height();
+  if (tileSize.h > th) {
     const gfx::Point offset =
       gfx::Point(tileSize.w/2,
                  tileSize.h/2 - g->font()->height()/2)
@@ -1211,13 +1213,28 @@ void Editor::drawTileNumbers(ui::Graphics* g, const Cel* cel)
       for (int x=0; x<image->width(); ++x) {
         doc::tile_t t = image->getPixel(x, y);
         if (t != doc::notile) {
+          const doc::tile_index ti = doc::tile_geti(t);
+          const doc::tile_index tf = doc::tile_getf(t);
+
           gfx::Point pt = editorToScreen(grid.tileToCanvas(gfx::Point(x, y)));
           pt -= bounds().origin();
           pt += offset;
 
-          text = fmt::format("{}", int(t & doc::tile_i_mask) + ti_offset);
-          pt.x -= g->measureUIText(text).w/2;
-          g->drawText(text, fgColor, color, pt);
+          text = fmt::format("{}", ti + ti_offset);
+
+          gfx::Point pt2(pt);
+          pt2.x -= g->measureUIText(text).w/2;
+          g->drawText(text, fgColor, color, pt2);
+
+          if (tf && tileSize.h > 2*th) {
+            text.clear();
+            build_tile_flags_string(tf, text);
+
+            const gfx::Size tsize = g->measureUIText(text);
+            pt.x -= tsize.w/2;
+            pt.y += tsize.h;
+            g->drawText(text, fgColor, color, pt);
+          }
         }
       }
     }

src/app/ui/editor/standby_state.cpp

@@ -53,6 +53,7 @@
 #include "app/util/layer_utils.h"
 #include "app/util/new_image_from_mask.h"
 #include "app/util/readable_time.h"
+#include "app/util/tile_flags_utils.h"
 #include "base/pi.h"
 #include "base/vector2d.h"
 #include "doc/grid.h"
@@ -611,9 +612,7 @@ bool StandbyState::onUpdateStatusBar(Editor* editor)
             doc::tile_index ti = doc::tile_geti(t);
             doc::tile_flags tf = doc::tile_getf(t);
             std::string str;
-            if (tf & doc::tile_f_xflip) str += "x";
-            if (tf & doc::tile_f_yflip) str += "y";
-            if (tf & doc::tile_f_dflip) str += "d";
+            build_tile_flags_string(tf, str);
             buf += fmt::format(" [{}{}]", ti, str);
           }
         }

src/app/ui/status_bar.cpp

@@ -35,6 +35,7 @@
 #include "app/ui/zoom_entry.h"
 #include "app/ui_context.h"
 #include "app/util/range_utils.h"
+#include "app/util/tile_flags_utils.h"
 #include "base/fs.h"
 #include "base/string.h"
 #include "doc/image.h"
@@ -525,9 +526,7 @@ public:
         str += fmt::format("{}", ti + baseIndex - 1);
       if (tf) {
         str += " Flip ";
-        if (tf & doc::tile_f_xflip) str += "X";
-        if (tf & doc::tile_f_yflip) str += "Y";
-        if (tf & doc::tile_f_dflip) str += "D";
+        build_tile_flags_string(tf, str);
       }
     }
     m_indicators->addTextIndicator(str.c_str());

src/app/util/tile_flags_utils.cpp

@@ -0,0 +1,23 @@
+// Aseprite
+// Copyright (C) 2023  Igara Studio S.A.
+//
+// This program is distributed under the terms of
+// the End-User License Agreement for Aseprite.
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "app/util/tile_flags_utils.h"
+
+namespace app {
+
+void build_tile_flags_string(const doc::tile_flags tf,
+                             std::string& result)
+{
+  if (tf & doc::tile_f_xflip) result += "X";
+  if (tf & doc::tile_f_yflip) result += "Y";
+  if (tf & doc::tile_f_dflip) result += "D";
+}
+
+} // namespace app

src/app/util/tile_flags_utils.h

@@ -0,0 +1,22 @@
+// Aseprite
+// Copyright (C) 2023  Igara Studio S.A.
+//
+// This program is distributed under the terms of
+// the End-User License Agreement for Aseprite.
+
+#ifndef APP_TILE_FLAGS_UTILS_H_INCLUDED
+#define APP_TILE_FLAGS_UTILS_H_INCLUDED
+#pragma once
+
+#include "doc/tile.h"
+
+#include <string>
+
+namespace app {
+
+  void build_tile_flags_string(const doc::tile_flags tf,
+                               std::string& result);
+
+} // namespace app
+
+#endif