REPORT-65060 【视觉验收】模板主题管理

【问题原因】
替换下表示透明的马赛克图片，之前给的图片里格子太大了

【改动思路】
同上

designer-base/src/main/java/com/fr/design/cell/CellRectangleStylePreviewPane.java

@@ -46,7 +46,7 @@ public class CellRectangleStylePreviewPane extends JPanel {
 
         for (int r = 0; r < ROW_COUNT; r++) {
             for (int c = 0; c < COLUMN_COUNT; c++) {
-                CellStylePreviewPane pane = new CellStylePreviewPane(false);
+                CellStylePreviewPane pane = new CellStylePreviewPane(false, false);
                 TemplateCellElement cellElement = DefaultThemedTemplateCellElementCase.createInstance(c, r);
                 int flags = CellBorderSourceFlag.INVALID_BORDER_SOURCE;
                 if (supportInnerBorder) {

designer-base/src/main/java/com/fr/design/cell/CellStylePreviewPane.java

@@ -30,13 +30,20 @@ import java.util.List;
 public class CellStylePreviewPane extends JPanel {
 
     public static final int MINIMUM_HEIGHT = 40;
+    private static final BufferedImage transparentBackgroundImage = IOUtils.readImage("/com/fr/design/images/transparent_background.png");
+    private final float transparentBackgroundWidth;
+    private final float transparentBackgroundHeight;
     private String paintText = "Report";
     private Style style = Style.DEFAULT_STYLE;
 
     private final boolean autoClearCanvas;
+    private final boolean paintingMosaic;
 
-    public CellStylePreviewPane(boolean autoClearCanvas) {
+    public CellStylePreviewPane(boolean autoClearCanvas, boolean paintingMosaic) {
         this.autoClearCanvas  = autoClearCanvas;
+        this.paintingMosaic = paintingMosaic;
+        transparentBackgroundWidth = transparentBackgroundImage.getWidth(null);
+        transparentBackgroundHeight = transparentBackgroundImage.getHeight(null);
         setPreferredSize(new Dimension(0, 0));
     }
 
@@ -64,12 +71,52 @@ public class CellStylePreviewPane extends JPanel {
         g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
         g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 
+        if (paintingMosaic) {
+            paintTransparentBackground(g2d, style);
+        }
+
         paintCellStyle(g2d, style);
 
         g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
         g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
     }
 
+    private void paintTransparentBackground(Graphics2D g2d, Style style) {
+        float alpha = computeTransparentBackgroundAlpha(style);
+
+        float scaleWidth = 1.0F * getWidth() / transparentBackgroundWidth;
+        float scaleHeight = 1.0F * getHeight() / transparentBackgroundHeight;
+        float maxScale = Math.max(scaleWidth, scaleHeight);
+
+        if (maxScale <= 1) {
+            scaleWidth = scaleHeight = 1;
+        } else {
+            scaleHeight = scaleWidth = maxScale;
+        }
+
+        Composite oldComposite = g2d.getComposite();
+        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
+        g2d.drawImage(transparentBackgroundImage, 0, 0, (int) (transparentBackgroundWidth * scaleWidth), (int) (transparentBackgroundHeight * scaleHeight), null);
+        g2d.setComposite(oldComposite);
+    }
+
+    private float computeTextColorBrightness(Style style) {
+        Color fontColor = style.getFRFont().getForeground();
+        return fontColor.getRed() * 0.299F + fontColor.getGreen() * 0.587F + fontColor.getBlue() * 0.114F;
+    }
+
+    private float computeTransparentBackgroundAlpha(Style style) {
+        float textBrightness = computeTextColorBrightness(style);
+
+        float alpha = 1.0F;
+        if (textBrightness < 50) {
+            alpha = 0.2F;
+        } else if (textBrightness < 160){
+            alpha = 0.5F;
+        }
+        return alpha;
+    }
+
     private void paintCellStyle(Graphics2D g2d, Style style) {
         int resolution = ScreenResolution.getScreenResolution();
 
@@ -86,9 +133,7 @@ public class CellStylePreviewPane extends JPanel {
 
         Style.paintContent(g2d, paintText, style, width, height, resolution);
 
-        Style.paintBorder(g2d, style,
-                width - GraphHelper.getLineStyleSize(style.getBorderRight()) / 2F,
-                height - GraphHelper.getLineStyleSize(style.getBorderBottom()) / 2F);
+        Style.paintBorder(g2d, style, width, height);
     }
 
     @Override

designer-realize/src/main/java/com/fr/design/report/ReportStylePane.java

@@ -79,7 +79,7 @@ public class ReportStylePane extends BasicPane {
 		setLayout(FRGUIPaneFactory.createBorderLayout());
 		setBorder(BorderFactory.createEmptyBorder(10, 10, 0, 10));
 
-		previewArea = new CellStylePreviewPane(true);
+		previewArea = new CellStylePreviewPane(true, true);
 		followingThemeButtonGroup = new UIButtonGroup<>(FOLLOWING_THEME_STRING_ARRAYS);
 		followingThemeButtonGroup.setAutoFireStateChanged(false);
 		customStylePane = new CustomFloatStyleSettingPane();