WMF fixes

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1723198 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/hwmf/draw/HwmfGraphics.java

@@ -20,6 +20,7 @@ package org.apache.poi.hwmf.draw;
 import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
 import java.awt.Paint;
 import java.awt.Rectangle;
 import java.awt.Shape;
@@ -36,6 +37,7 @@ import java.util.NoSuchElementException;
 
 import org.apache.poi.hwmf.record.HwmfBrushStyle;
 import org.apache.poi.hwmf.record.HwmfHatchStyle;
+import org.apache.poi.hwmf.record.HwmfMapMode;
 import org.apache.poi.hwmf.record.HwmfMisc.WmfSetBkMode.HwmfBkMode;
 import org.apache.poi.hwmf.record.HwmfObjectTableEntry;
 import org.apache.poi.hwmf.record.HwmfPenStyle;
@@ -49,6 +51,7 @@ public class HwmfGraphics {
     private List<HwmfObjectTableEntry> objectTable = new ArrayList<HwmfObjectTableEntry>();
     /** Bounding box from the placeable header */ 
     private final Rectangle2D bbox;
+    private final AffineTransform initialAT;
 
     /**
      * Initialize a graphics context for wmf rendering
@@ -59,6 +62,7 @@ public class HwmfGraphics {
     public HwmfGraphics(Graphics2D graphicsCtx, Rectangle2D bbox) {
         this.graphicsCtx = graphicsCtx;
         this.bbox = (Rectangle2D)bbox.clone();
+        this.initialAT = graphicsCtx.getTransform();
     }
 
     public HwmfDrawProperties getProperties() {
@@ -72,7 +76,6 @@ public class HwmfGraphics {
             return;
         }
 
-        Shape tshape = fitShapeToView(shape);
         BasicStroke stroke = getStroke();
 
         // first draw a solid background line (depending on bkmode)
@@ -80,56 +83,26 @@ public class HwmfGraphics {
         if (prop.getBkMode() == HwmfBkMode.OPAQUE && (lineDash != HwmfLineDash.SOLID && lineDash != HwmfLineDash.INSIDEFRAME)) {
             graphicsCtx.setStroke(new BasicStroke(stroke.getLineWidth()));
             graphicsCtx.setColor(prop.getBackgroundColor().getColor());
-            graphicsCtx.draw(tshape);
+            graphicsCtx.draw(shape);
         }
 
         // then draw the (dashed) line
         graphicsCtx.setStroke(stroke);
         graphicsCtx.setColor(prop.getPenColor().getColor());
-        graphicsCtx.draw(tshape);
+        graphicsCtx.draw(shape);
     }
 
     public void fill(Shape shape) {
         if (prop.getBrushStyle() != HwmfBrushStyle.BS_NULL) {
             GeneralPath gp = new GeneralPath(shape);
             gp.setWindingRule(prop.getPolyfillMode().awtFlag);
-            Shape tshape = fitShapeToView(gp);
             graphicsCtx.setPaint(getFill());
-            graphicsCtx.fill(tshape);
+            graphicsCtx.fill(shape);
         }
 
         draw(shape);
     }
 
-    protected Shape fitShapeToView(Shape shape) {
-        int scaleUnits = prop.getMapMode().scale;
-        Rectangle2D view = prop.getViewport();
-        Rectangle2D win = prop.getWindow();
-        if (view == null) {
-            view = win;
-        }
-        double scaleX, scaleY;
-        switch (scaleUnits) {
-        case -1:
-            scaleX = view.getWidth() / win.getWidth();
-            scaleY = view.getHeight() / win.getHeight();
-            break;
-        case 0:
-            scaleX = scaleY = 1;
-            break;
-        default:
-            scaleX = scaleY = scaleUnits / (double)Units.POINT_DPI;
-        }
-
-        AffineTransform at = new AffineTransform();
-        at.scale(scaleX, scaleY);
-//        at.translate(-view.getX(), -view.getY());
-        at.translate(bbox.getWidth()/win.getWidth(), bbox.getHeight()/win.getHeight());
-
-        Shape tshape = at.createTransformedShape(shape);
-        return tshape;
-    }
-
     protected BasicStroke getStroke() {
         Rectangle2D view = prop.getViewport();
         Rectangle2D win = prop.getWindow();
@@ -285,4 +258,47 @@ public class HwmfGraphics {
         }
         prop = propStack.remove(stackIndex);
     }
+
+    public void updateWindowMapMode() {
+        GraphicsConfiguration gc = graphicsCtx.getDeviceConfiguration();
+        Rectangle2D win = prop.getWindow();
+        HwmfMapMode mapMode = prop.getMapMode();
+        graphicsCtx.setTransform(initialAT);
+
+        switch (mapMode) {
+        default:
+        case MM_ANISOTROPIC:
+            // scale output bounds to image bounds
+            graphicsCtx.scale(gc.getBounds().getWidth()/bbox.getWidth(), gc.getBounds().getHeight()/bbox.getHeight());
+            graphicsCtx.translate(-bbox.getX(), -bbox.getY());
+
+            // scale window bounds to output bounds
+            graphicsCtx.translate(win.getCenterX(), win.getCenterY());
+            graphicsCtx.scale(bbox.getWidth()/win.getWidth(), bbox.getHeight()/win.getHeight());
+            graphicsCtx.translate(-win.getCenterX(), -win.getCenterY());
+            break;
+        case MM_ISOTROPIC:
+            // TODO: to be validated ...
+            // like anisotropic, but use x-axis as reference
+            graphicsCtx.scale(gc.getBounds().getWidth()/bbox.getWidth(), gc.getBounds().getWidth()/bbox.getWidth());
+            graphicsCtx.translate(-bbox.getX(), -bbox.getY());
+            graphicsCtx.translate(win.getCenterX(), win.getCenterY());
+            graphicsCtx.scale(bbox.getWidth()/win.getWidth(), bbox.getWidth()/win.getWidth());
+            graphicsCtx.translate(-win.getCenterX(), -win.getCenterY());
+            break;
+        case MM_LOMETRIC:
+        case MM_HIMETRIC:
+        case MM_LOENGLISH:
+        case MM_HIENGLISH:
+        case MM_TWIPS:
+            // TODO: to be validated ...
+            graphicsCtx.transform(gc.getNormalizingTransform());
+            graphicsCtx.scale(1./mapMode.scale, -1./mapMode.scale);
+            graphicsCtx.translate(-bbox.getX(), -bbox.getY());
+            break;
+        case MM_TEXT:
+            // TODO: to be validated ...
+            break;
+        }
+    }
 }

src/scratchpad/src/org/apache/poi/hwmf/record/HwmfDraw.java

@@ -664,7 +664,7 @@ public class HwmfDraw {
 
         @Override
         public void draw(HwmfGraphics ctx) {
-
+            ctx.applyObjectTableEntry(objectIndex);
         }
     }
  }

src/scratchpad/src/org/apache/poi/hwmf/record/HwmfMisc.java

@@ -221,6 +221,7 @@ public class HwmfMisc {
         @Override
         public void draw(HwmfGraphics ctx) {
             ctx.getProperties().setMapMode(mapMode);
+            ctx.updateWindowMapMode();
         }
     }
 

src/scratchpad/src/org/apache/poi/hwmf/record/HwmfPalette.java

@@ -17,6 +17,7 @@
 
 package org.apache.poi.hwmf.record;
 
+import java.awt.Color;
 import java.io.IOException;
 
 import org.apache.poi.hwmf.draw.HwmfGraphics;
@@ -26,18 +27,58 @@ import org.apache.poi.util.LittleEndianInputStream;
 public class HwmfPalette {
     
     public static class PaletteEntry {
+        enum PaletteEntryFlag {
+            /**
+             * Specifies that the logical palette entry be used for palette animation. This value
+             * prevents other windows from matching colors to the palette entry because the color frequently
+             * changes. If an unused system-palette entry is available, the color is placed in that entry.
+             * Otherwise, the color is not available for animation.
+             */
+            PC_RESERVED(0x01),
+            /**
+             * Specifies that the low-order word of the logical palette entry designates a hardware
+             * palette index. This value allows the application to show the contents of the display device palette.
+             */
+            PC_EXPLICIT(0x02),
+            /**
+             * Specifies that the color be placed in an unused entry in the system palette
+             * instead of being matched to an existing color in the system palette. If there are no unused entries
+             * in the system palette, the color is matched normally. Once this color is in the system palette,
+             * colors in other logical palettes can be matched to this color.
+             */
+            PC_NOCOLLAPSE(0x04)
+            ;
+            
+            int flag;
+            
+            PaletteEntryFlag(int flag) {
+                this.flag = flag;
+            }
+
+            static PaletteEntryFlag valueOf(int flag) {
+                for (PaletteEntryFlag pef : values()) {
+                    if (pef.flag == flag) return pef;
+                }
+                return null;
+            }        
+
+        }
+        
         // Values (1 byte):  An 8-bit unsigned integer that defines how the palette entry is to be used. 
         // The Values field MUST be 0x00 or one of the values in the PaletteEntryFlag Enumeration table.
         // Blue (1 byte): An 8-bit unsigned integer that defines the blue intensity value for the palette entry.
         // Green (1 byte): An 8-bit unsigned integer that defines the green intensity value for the palette entry.
         // Red (1 byte): An 8-bit unsigned integer that defines the red intensity value for the palette entry.
-        private int values, blue, green, red;
+        private PaletteEntryFlag values;
+        private Color colorRef;
         
         public int init(LittleEndianInputStream leis) throws IOException {
-            values = leis.readUByte();
-            blue = leis.readUByte();
-            green = leis.readUByte();
-            red = leis.readUByte();
+            values = PaletteEntryFlag.valueOf(leis.readUByte());
+            int blue = leis.readUByte();
+            int green = leis.readUByte();
+            int red = leis.readUByte();
+            colorRef = new Color(red, green, blue);
+            
             return 4*LittleEndianConsts.BYTE_SIZE;
         }
     }
@@ -57,7 +98,7 @@ public class HwmfPalette {
          */
         private int numberOfEntries;
         
-        PaletteEntry entries[];
+        private PaletteEntry entries[];
         
         @Override
         public int init(LittleEndianInputStream leis, long recordSize, int recordFunction) throws IOException {

src/scratchpad/src/org/apache/poi/hwmf/record/HwmfWindowing.java

@@ -167,6 +167,7 @@ public class HwmfWindowing {
         @Override
         public void draw(HwmfGraphics ctx) {
             ctx.getProperties().setWindowOrg(x, y);
+            ctx.updateWindowMapMode();
         }
 
         public int getY() {
@@ -211,6 +212,7 @@ public class HwmfWindowing {
         @Override
         public void draw(HwmfGraphics ctx) {
             ctx.getProperties().setWindowExt(width, height);
+            ctx.updateWindowMapMode();
         }
 
         public int getHeight() {
@@ -254,6 +256,7 @@ public class HwmfWindowing {
         public void draw(HwmfGraphics ctx) {
             Rectangle2D window = ctx.getProperties().getWindow();
             ctx.getProperties().setWindowOrg(window.getX()+xOffset, window.getY()+yOffset);
+            ctx.updateWindowMapMode();
         }
     }
 
@@ -307,6 +310,7 @@ public class HwmfWindowing {
             double width = window.getWidth() * xNum / xDenom;
             double height = window.getHeight() * yNum / yDenom;
             ctx.getProperties().setWindowExt(width, height);
+            ctx.updateWindowMapMode();
         }
     }
 

src/scratchpad/src/org/apache/poi/hwmf/usermodel/HwmfPicture.java

@@ -18,6 +18,7 @@
 package org.apache.poi.hwmf.usermodel;
 
 import java.awt.Graphics2D;
+import java.awt.geom.AffineTransform;
 import java.awt.geom.Rectangle2D;
 import java.io.BufferedInputStream;
 import java.io.IOException;
@@ -84,9 +85,14 @@ public class HwmfPicture {
     }
 
     public void draw(Graphics2D ctx) {
-        HwmfGraphics g = new HwmfGraphics(ctx, getBounds());
-        for (HwmfRecord r : records)  {
-            r.draw(g);
+        AffineTransform at = ctx.getTransform();
+        try {
+            HwmfGraphics g = new HwmfGraphics(ctx, getBounds());
+            for (HwmfRecord r : records)  {
+                r.draw(g);
+            }
+        } finally {
+            ctx.setTransform(at);
         }
     }
 

src/scratchpad/testcases/org/apache/poi/hwmf/TestHwmfParsing.java

@@ -79,9 +79,6 @@ public class TestHwmfParsing {
         g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
         g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
         
-        g.scale(width/bounds.getWidth(), height/bounds.getHeight());
-        g.translate(-bounds.getX(), -bounds.getY());
-        
         wmf.draw(g);
 
         g.dispose();