From 542ec7f548bc40aefb6157ef0eb7d710952e8d1f Mon Sep 17 00:00:00 2001
From: Tobias Predel <tobias.predel@gmail.com>
Date: Thu, 31 Oct 2024 13:11:57 +0100
Subject: [PATCH] Manage images with unique_ptr

ThreadPool does not really support unique_ptr, so spare it for now.
---
 src/document.h | 19 +++++++++----------
 src/myframe.h  | 17 ++++++-----------
 src/system.h   | 17 +++++------------
 src/text.h     |  2 +-
 4 files changed, 21 insertions(+), 34 deletions(-)

diff --git a/src/document.h b/src/document.h
index 9496fcac..df77ab41 100644
--- a/src/document.h
+++ b/src/document.h
@@ -175,15 +175,14 @@ struct Document {
             sos.Write8(ocs ? drawpath.size() : 0);  // zoom level
             RefreshImageRefCount(true);
             int realindex = 0;
-            loopv(i, sys->imagelist) {
-                Image &image = *sys->imagelist[i];
-                if (image.trefc) {
-                    fos.PutC(image.image_type);
-                    sos.WriteDouble(image.display_scale);
-                    wxInt64 imagelen(image.image_data.size());
+            for (const auto &uimg : sys->imagelist) {
+                if (uimg->trefc) {
+                    fos.PutC(uimg->image_type);
+                    sos.WriteDouble(uimg->display_scale);
+                    wxInt64 imagelen(uimg->image_data.size());
                     sos.Write64(imagelen);
-                    fos.Write(image.image_data.data(), imagelen);
-                    image.savedindex = realindex++;
+                    fos.Write(uimg->image_data.data(), imagelen);
+                    uimg->savedindex = realindex++;
                 }
             }
 
@@ -805,7 +804,7 @@ struct Document {
     }
 
     void RefreshImageRefCount(bool includefolded) {
-        loopv(i, sys->imagelist) sys->imagelist[i]->trefc = 0;
+        for (const auto &uimg : sys->imagelist) uimg->trefc = 0;
         rootgrid->ImageRefCount(includefolded);
     }
 
@@ -2243,7 +2242,7 @@ struct Document {
     }
 
     void SetImageBM(Cell *c, std::vector<uint8_t> &&idv, double sc) {
-        c->text.image = sys->imagelist[sys->AddImageToList(sc, std::move(idv), 'I')];
+        c->text.image = sys->imagelist[sys->AddImageToList(sc, std::move(idv), 'I')].get();
     }
 
     bool LoadImageIntoCell(const wxString &fn, Cell *c, double sc) {
diff --git a/src/myframe.h b/src/myframe.h
index 7629983a..5189482a 100644
--- a/src/myframe.h
+++ b/src/myframe.h
@@ -1149,17 +1149,12 @@ struct MyFrame : wxFrame {
         {  // block all other events until we finished preparing
             wxEventBlocker blocker(this);
             wxBusyCursor wait;
-            {
-                ThreadPool pool(std::thread::hardware_concurrency());
-                loopv(i, sys->imagelist) {
-                    pool.enqueue(
-                        [](Image *img) {
-                            img->bm_display = wxNullBitmap;
-                            img->Display();
-                        },
-                        sys->imagelist[i]);
-                }
-            }  // wait until all tasks are finished
+
+            for (const auto &uimg : sys->imagelist) {
+                uimg->bm_display = wxNullBitmap;
+                uimg->Display();
+            }
+
             RenderFolderIcon();
             if (nb) {
                 loop(i, nb->GetPageCount()) {
diff --git a/src/system.h b/src/system.h
index 50667259..bea27be7 100644
--- a/src/system.h
+++ b/src/system.h
@@ -67,7 +67,7 @@ struct System {
     Evaluator ev;
     wxString clipboardcopy;
     unique_ptr<Cell> cellclipboard;
-    std::vector<Image *> imagelist;
+    std::vector<unique_ptr<Image>> imagelist;
     std::vector<int> loadimageids;
     uchar versionlastloaded {0};
     wxLongLong fakelasteditonload;
@@ -368,16 +368,9 @@ struct System {
     done:
 
         doc->RefreshImageRefCount(false);
-        {
-            ThreadPool pool(std::thread::hardware_concurrency());
-            for (auto *image : sys->imagelist) {
-                pool.enqueue(
-                    [](Image *img) {
-                        if (img->trefc) img->Display();
-                    },
-                    image);
-            }
-        }  // wait until all tasks are finished
+        for (const auto &uimg : sys->imagelist) {
+            if (uimg->trefc) uimg->Display();
+        }
 
         FileUsed(filename, doc);
         doc->Refresh();
@@ -620,7 +613,7 @@ struct System {
         loopv(i, imagelist) {
             if (imagelist[i]->hash == hash) return i;
         }
-        imagelist.push_back(new Image(hash, sc, std::move(idv), iti));
+        imagelist.push_back(make_unique<Image>(hash, sc, std::move(idv), iti));
         return imagelist.size() - 1;
     }
 
diff --git a/src/text.h b/src/text.h
index 0be4e376..bd165a2f 100644
--- a/src/text.h
+++ b/src/text.h
@@ -472,7 +472,7 @@ struct Text {
         relsize = dis.Read32();
 
         int i = dis.Read32();
-        image = i >= 0 ? sys->imagelist[sys->loadimageids[i]] : nullptr;
+        image = i >= 0 ? sys->imagelist[sys->loadimageids[i]].get() : nullptr;
 
         if (sys->versionlastloaded >= 7) stylebits = dis.Read32();