Fix margin-border-padding widths for floating Text min-max-width calculation

DEVSIX-3958

Author: yulian-gaponenko

layout/src/main/java/com/itextpdf/layout/renderer/TextRenderer.java

@@ -196,6 +196,7 @@ public LayoutResult layout(LayoutContext layoutContext) {
             FloatingHelper.adjustFloatedBlockLayoutBox(this, layoutBox, null, floatRendererAreas, floatPropertyValue, overflowX);
         }
 
+        float preMarginBorderPaddingWidth = layoutBox.getWidth();
         UnitValue[] margins = getMargins();
         applyMargins(layoutBox, margins, false);
         Border[] borders = getBorders();
@@ -204,7 +205,7 @@ public LayoutResult layout(LayoutContext layoutContext) {
         UnitValue[] paddings = getPaddings();
         applyPaddings(layoutBox, paddings, false);
 
-        MinMaxWidth countedMinMaxWidth = new MinMaxWidth(area.getBBox().getWidth() - layoutBox.getWidth());
+        MinMaxWidth countedMinMaxWidth = new MinMaxWidth(preMarginBorderPaddingWidth - layoutBox.getWidth());
         AbstractWidthHandler widthHandler;
         if (noSoftWrap) {
             widthHandler = new SumSumWidthHandler(countedMinMaxWidth);

layout/src/test/java/com/itextpdf/layout/renderer/TextRendererTest.java

@@ -385,4 +385,26 @@ public void overflowWrapAnywhereItalicSimulationMinWidth() {
 
         Assert.assertTrue(minWidthAndItalicSimulation > minWidthNoItalicSimulation);
     }
+
+    @Test
+    public void floatingRightMinMaxWidth() throws IOException {
+        String longestWord = "float:right";
+        String wholeText = "text with " + longestWord;
+        TextRenderer textRenderer = new TextRenderer(new Text(wholeText));
+        textRenderer.setProperty(Property.FLOAT, FloatPropertyValue.RIGHT);
+
+        textRenderer.setParent(createDummyDocument().getRenderer());
+
+        PdfFont font = PdfFontFactory.createFont();
+        int fontSize = 12;
+        textRenderer.setProperty(Property.FONT, font);
+        textRenderer.setProperty(Property.FONT_SIZE, UnitValue.createPointValue(fontSize));
+
+        float expectedMaxWidth = font.getWidth(wholeText, fontSize);
+        float expectedMinWidth = font.getWidth(longestWord, fontSize);
+
+        MinMaxWidth minMaxWidth = textRenderer.getMinMaxWidth();
+        Assert.assertEquals(expectedMinWidth, minMaxWidth.getMinWidth(), 0.01f);
+        Assert.assertEquals(expectedMaxWidth, minMaxWidth.getMaxWidth(), 0.01f);
+    }
 }