Merge pull request #145 from maxm74/dev-bgracontrols

Image Manipulation Get Area Image Resolution copy, Xml load of Crop Areas, Test update

bgracontrols.lpk

@@ -15,8 +15,8 @@
           <SyntaxMode Value="Delphi"/>
           <CStyleOperator Value="False"/>
           <AllowLabel Value="False"/>
-          <CPPInline Value="False"/>
           <UseAnsiStrings Value="False"/>
+          <CPPInline Value="False"/>
         </SyntaxOptions>
       </Parsing>
       <CodeGeneration>

bgraimagemanipulation.pas

@@ -831,6 +831,9 @@ begin
 
         // Create bitmap to put image on final scale
         Result := TBGRABitmap.Create(rScaledArea.Width, rScaledArea.Height);
+        Result.ResolutionUnit:=CropBitmap.ResolutionUnit;
+        Result.ResolutionX:=CropBitmap.ResolutionX;
+        Result.ResolutionY:=CropBitmap.ResolutionY;
 
         // Resize the cropped image to final scale
         ResampledBitmap := CropBitmap.Resample(rScaledArea.Width, rScaledArea.Height, rmFineResample);
@@ -851,11 +854,11 @@ begin
   Result :=nil;
   if not (fOwner.fImageBitmap.Empty) then
   try
-     // Create a new bitmap for cropped region
-     Result := TBGRABitmap.Create(rArea.Width, rArea.Height);
-
      // Get the cropped image on selected region in original scale
-     Result.Canvas.CopyRect(Rect(0,0, rArea.Width, rArea.Height), fOwner.fImageBitmap.Canvas, rArea);
+     Result :=fOwner.fImageBitmap.GetPart(rArea);
+     Result.ResolutionUnit:=fOwner.fImageBitmap.ResolutionUnit;
+     Result.ResolutionX:=fOwner.fImageBitmap.ResolutionX;
+     Result.ResolutionY:=fOwner.fImageBitmap.ResolutionY;
   except
      if (Result<>nil)
      then FreeAndNil(Result);
@@ -935,10 +938,13 @@ begin
   try
     loading :=True;
 
+    XMLConf.OpenKey(fOwner.Name+'.'+Self.Name);
+    newCount := XMLConf.GetValue('Count', -1);
+    if (newCount=-1)
+    then raise Exception.Create('XML Path not Found');
+
     Clear;
 
-    XMLConf.OpenKey(fOwner.Name+'.'+Self.Name);
-    newCount := XMLConf.GetValue('Count', 0);
     newSelected := XMLConf.GetValue('Selected', 0);
     for i :=0 to newCount-1 do
     begin

test/test_bgraimagemanipulation/unitbgraimagemanipulationdemo.pas

@@ -343,7 +343,8 @@ begin
   if AByUser then
   begin
     CropArea :=TCropArea(cbBoxList.Items.Objects[cbBoxList.ItemIndex]);
-    CropArea.Height:=edHeight.Value;
+    if (CropArea<>nil)
+    then CropArea.Height:=edHeight.Value;
   end;
 end;
 
@@ -355,7 +356,8 @@ begin
   if AByUser then
   begin
     CropArea :=TCropArea(cbBoxList.Items.Objects[cbBoxList.ItemIndex]);
-    CropArea.Left :=edLeft.Value;
+    if (CropArea<>nil)
+    then CropArea.Left :=edLeft.Value;
   end;
 end;
 
@@ -367,7 +369,8 @@ begin
   if AByUser then
   begin
     CropArea :=TCropArea(cbBoxList.Items.Objects[cbBoxList.ItemIndex]);
-    CropArea.Top :=edTop.Value;
+    if (CropArea<>nil)
+    then CropArea.Top :=edTop.Value;
   end;
 end;
 
@@ -379,7 +382,8 @@ begin
   if AByUser then
   begin
     CropArea :=TCropArea(cbBoxList.Items.Objects[cbBoxList.ItemIndex]);
-    CropArea.Width:=edWidth.Value;
+    if (CropArea<>nil)
+    then CropArea.Width:=edWidth.Value;
   end;
 end;