# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1671813012 -3600
# Node ID f36de3ba43c8684262a1e7e7f52818819ca64625
# Parent  0d8a07e98cb80439ff3b4874a44368febb5622a5
added button "Stretch to whole range" in the "Change windowing" menu

diff -r 0d8a07e98cb8 -r f36de3ba43c8 Applications/StoneWebViewer/NEWS
--- a/Applications/StoneWebViewer/NEWS	Tue Dec 20 08:51:43 2022 +0100
+++ b/Applications/StoneWebViewer/NEWS	Fri Dec 23 17:30:12 2022 +0100
@@ -1,6 +1,8 @@
 Pending changes in the mainline
 ===============================
 
+* New button "Stretch to whole range" in the "Change windowing" menu
+
 
 Version 2.5 (2022-12-05)
 ========================
diff -r 0d8a07e98cb8 -r f36de3ba43c8 Applications/StoneWebViewer/WebApplication/app.js
--- a/Applications/StoneWebViewer/WebApplication/app.js	Tue Dec 20 08:51:43 2022 +0100
+++ b/Applications/StoneWebViewer/WebApplication/app.js	Fri Dec 23 17:30:12 2022 +0100
@@ -1034,6 +1034,14 @@
       }
     },
 
+    StretchWindowing: function(center, width) {
+      this.showWindowing = false;
+      var canvas = this.GetActiveCanvas();
+      if (canvas != '') {
+        stone.StretchWindowing(canvas);
+      }
+    },
+
     InvertContrast: function() {
       var canvas = this.GetActiveCanvas();
       if (canvas != '') {
diff -r 0d8a07e98cb8 -r f36de3ba43c8 Applications/StoneWebViewer/WebApplication/index.html
--- a/Applications/StoneWebViewer/WebApplication/index.html	Tue Dec 20 08:51:43 2022 +0100
+++ b/Applications/StoneWebViewer/WebApplication/index.html	Fri Dec 23 17:30:12 2022 +0100
@@ -476,6 +476,11 @@
                       {{ preset.name }} <small>({{ preset.info }})</small>
                     </a>
                   </li>
+                  <li class="wvToolbar__windowingPresetListItem">
+                    <a href="#" v-on:click="StretchWindowing()">
+                      Stretch to whole range
+                    </a>
+                  </li>
                   <li v-for="preset in globalConfiguration.WindowingPresets"
                       class="wvToolbar__windowingPresetListItem">
                     <a href="#" v-on:click="SetWindowing(preset.WindowCenter, preset.WindowWidth)">
diff -r 0d8a07e98cb8 -r f36de3ba43c8 Applications/StoneWebViewer/WebAssembly/StoneWebViewer.cpp
--- a/Applications/StoneWebViewer/WebAssembly/StoneWebViewer.cpp	Tue Dec 20 08:51:43 2022 +0100
+++ b/Applications/StoneWebViewer/WebAssembly/StoneWebViewer.cpp	Fri Dec 23 17:30:12 2022 +0100
@@ -3094,6 +3094,34 @@
     }
   }
 
+  void StretchWindowing()
+  {
+    float minValue, maxValue;
+    
+    {
+      std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock());
+
+      if (!lock->GetController().GetScene().HasLayer(LAYER_TEXTURE) ||
+          lock->GetController().GetScene().GetLayer(LAYER_TEXTURE).GetType() !=
+          OrthancStone::ISceneLayer::Type_FloatTexture)
+      {
+        return;
+      }
+
+      const Orthanc::ImageAccessor& texture =
+        dynamic_cast<OrthancStone::FloatTextureSceneLayer&>(
+          lock->GetController().GetScene().GetLayer(LAYER_TEXTURE)).GetTexture();
+      if (texture.GetFormat() != Orthanc::PixelFormat_Float32)
+      {
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
+      }
+
+      Orthanc::ImageProcessing::GetMinMaxFloatValue(minValue, maxValue, texture);
+    }
+
+    SetWindowing((minValue + maxValue) / 2.0f, maxValue - minValue);
+  }
+
   void FlipX()
   {
     {
@@ -4271,6 +4299,17 @@
 
 
   EMSCRIPTEN_KEEPALIVE
+  void StretchWindowing(const char* canvas)
+  {
+    try
+    {
+      GetViewport(canvas)->StretchWindowing();
+    }
+    EXTERN_CATCH_EXCEPTIONS;
+  }
+
+
+  EMSCRIPTEN_KEEPALIVE
   void InvertContrast(const char* canvas)
   {
     try