Fix mouse wheel scrolling

[evince.git] / pdf / xpdf / Page.cc

diff --git a/pdf/xpdf/Page.cc b/pdf/xpdf/Page.cc
index 72b4a8e623aa7f8be3f908f211312b5424e22746..817e1d52823e3e16507693c91fe84bdcfad5bf4b 100644 (file)
--- a/pdf/xpdf/Page.cc
+++ b/pdf/xpdf/Page.cc
@@ -2,7 +2,7 @@
 //
 // Page.cc
 //
-// Copyright 1996-2002 Glyph & Cog, LLC
+// Copyright 1996-2003 Glyph & Cog, LLC
 //
 //========================================================================
 
@@ -59,8 +59,12 @@ PageAttrs::PageAttrs(PageAttrs *attrs, Dict *dict) {
   readBox(dict, "MediaBox", &mediaBox);
 
   // crop box
-  cropBox = mediaBox;
-  haveCropBox = readBox(dict, "CropBox", &cropBox);
+  if (readBox(dict, "CropBox", &cropBox)) {
+    haveCropBox = gTrue;
+  }
+  if (!haveCropBox) {
+    cropBox = mediaBox;
+  }
 
   // if the MediaBox is excessively larger than the CropBox,
   // just use the CropBox
@@ -199,6 +203,14 @@ Page::Page(XRef *xrefA, int numA, Dict *pageDict, PageAttrs *attrsA) {
     goto err1;
   }
 
+  // thumb
+  pageDict->lookupNF("Thumb", &thumb);
+  if (!(thumb.isStream() || thumb.isNull() || thumb.isRef())) {
+      error(-1, "Page thumb object (page %d) is wrong type (%s)",
+            num, thumb.getTypeName());
+      thumb.initNull(); 
+  }
+  
   return;
 
  err2:
@@ -214,19 +226,26 @@ Page::~Page() {
   contents.free();
 }
 
-void Page::display(OutputDev *out, double dpi, int rotate,
+void Page::display(OutputDev *out, double hDPI, double vDPI,
+                  int rotate, GBool crop,
                   Links *links, Catalog *catalog,
                   GBool (*abortCheckCbk)(void *data),
-                  void *abortCheckCbkData) {
-  displaySlice(out, dpi, rotate, -1, -1, -1, -1, links, catalog,
-              abortCheckCbk, abortCheckCbkData);
+                  void *abortCheckCbkData,
+                   GBool (*annotDisplayDecideCbk)(Annot *annot, void *user_data),
+                   void *annotDisplayDecideCbkData) {
+  displaySlice(out, hDPI, vDPI, rotate, crop, -1, -1, -1, -1, links, catalog,
+              abortCheckCbk, abortCheckCbkData,
+               annotDisplayDecideCbk, annotDisplayDecideCbkData);
 }
 
-void Page::displaySlice(OutputDev *out, double dpi, int rotate,
+void Page::displaySlice(OutputDev *out, double hDPI, double vDPI,
+                       int rotate, GBool crop,
                        int sliceX, int sliceY, int sliceW, int sliceH,
                        Links *links, Catalog *catalog,
                        GBool (*abortCheckCbk)(void *data),
-                       void *abortCheckCbkData) {
+                       void *abortCheckCbkData,
+                        GBool (*annotDisplayDecideCbk)(Annot *annot, void *user_data),
+                        void *annotDisplayDecideCbkData) {
 #ifndef PDF_PARSER_ONLY
   PDFRectangle *mediaBox, *cropBox;
   PDFRectangle box;
@@ -234,7 +253,7 @@ void Page::displaySlice(OutputDev *out, double dpi, int rotate,
   Object obj;
   Link *link;
   Annots *annotList;
-  double k;
+  double kx, ky;
   int i;
 
   rotate += getRotate();
@@ -246,46 +265,47 @@ void Page::displaySlice(OutputDev *out, double dpi, int rotate,
 
   mediaBox = getBox();
   if (sliceW >= 0 && sliceH >= 0) {
-    k = 72.0 / dpi;
+    kx = 72.0 / hDPI;
+    ky = 72.0 / vDPI;
     if (rotate == 90) {
       if (out->upsideDown()) {
-       box.x1 = mediaBox->x1 + k * sliceY;
-       box.x2 = mediaBox->x1 + k * (sliceY + sliceH);
+       box.x1 = mediaBox->x1 + ky * sliceY;
+       box.x2 = mediaBox->x1 + ky * (sliceY + sliceH);
       } else {
-       box.x1 = mediaBox->x2 - k * (sliceY + sliceH);
-       box.x2 = mediaBox->x2 - k * sliceY;
+       box.x1 = mediaBox->x2 - ky * (sliceY + sliceH);
+       box.x2 = mediaBox->x2 - ky * sliceY;
       }
-      box.y1 = mediaBox->y1 + k * sliceX;
-      box.y2 = mediaBox->y1 + k * (sliceX + sliceW);
+      box.y1 = mediaBox->y1 + kx * sliceX;
+      box.y2 = mediaBox->y1 + kx * (sliceX + sliceW);
     } else if (rotate == 180) {
-      box.x1 = mediaBox->x2 - k * (sliceX + sliceW);
-      box.x2 = mediaBox->x2 - k * sliceX;
+      box.x1 = mediaBox->x2 - kx * (sliceX + sliceW);
+      box.x2 = mediaBox->x2 - kx * sliceX;
       if (out->upsideDown()) {
-       box.y1 = mediaBox->y1 + k * sliceY;
-       box.y2 = mediaBox->y1 + k * (sliceY + sliceH);
+       box.y1 = mediaBox->y1 + ky * sliceY;
+       box.y2 = mediaBox->y1 + ky * (sliceY + sliceH);
       } else {
-       box.y1 = mediaBox->y2 - k * (sliceY + sliceH);
-       box.y2 = mediaBox->y2 - k * sliceY;
+       box.y1 = mediaBox->y2 - ky * (sliceY + sliceH);
+       box.y2 = mediaBox->y2 - ky * sliceY;
       }
     } else if (rotate == 270) {
       if (out->upsideDown()) {
-       box.x1 = mediaBox->x2 - k * (sliceY + sliceH);
-       box.x2 = mediaBox->x2 - k * sliceY;
+       box.x1 = mediaBox->x2 - ky * (sliceY + sliceH);
+       box.x2 = mediaBox->x2 - ky * sliceY;
       } else {
-       box.x1 = mediaBox->x1 + k * sliceY;
-       box.x2 = mediaBox->x1 + k * (sliceY + sliceH);
+       box.x1 = mediaBox->x1 + ky * sliceY;
+       box.x2 = mediaBox->x1 + ky * (sliceY + sliceH);
       }
-      box.y1 = mediaBox->y2 - k * (sliceX + sliceW);
-      box.y2 = mediaBox->y2 - k * sliceX;
+      box.y1 = mediaBox->y2 - kx * (sliceX + sliceW);
+      box.y2 = mediaBox->y2 - kx * sliceX;
     } else {
-      box.x1 = mediaBox->x1 + k * sliceX;
-      box.x2 = mediaBox->x1 + k * (sliceX + sliceW);
+      box.x1 = mediaBox->x1 + kx * sliceX;
+      box.x2 = mediaBox->x1 + kx * (sliceX + sliceW);
       if (out->upsideDown()) {
-       box.y1 = mediaBox->y2 - k * (sliceY + sliceH);
-       box.y2 = mediaBox->y2 - k * sliceY;
+       box.y1 = mediaBox->y2 - ky * (sliceY + sliceH);
+       box.y2 = mediaBox->y2 - ky * sliceY;
       } else {
-       box.y1 = mediaBox->y1 + k * sliceY;
-       box.y2 = mediaBox->y1 + k * (sliceY + sliceH);
+       box.y1 = mediaBox->y1 + ky * sliceY;
+       box.y2 = mediaBox->y1 + ky * (sliceY + sliceH);
       }
     }
   } else {
@@ -304,36 +324,45 @@ void Page::displaySlice(OutputDev *out, double dpi, int rotate,
   }
 
   gfx = new Gfx(xref, out, num, attrs->getResourceDict(),
-               dpi, &box, isCropped(), cropBox, rotate,
+               hDPI, vDPI, &box, crop && isCropped(), cropBox, rotate,
                abortCheckCbk, abortCheckCbkData);
   contents.fetch(xref, &obj);
   if (!obj.isNull()) {
+    gfx->saveState();
     gfx->display(&obj);
+    gfx->restoreState();
   }
   obj.free();
 
   // draw links
   if (links) {
+    gfx->saveState();
     for (i = 0; i < links->getNumLinks(); ++i) {
       link = links->getLink(i);
       out->drawLink(link, catalog);
     }
+    gfx->restoreState();
     out->dump();
   }
 
   // draw non-link annotations
-  //~ need to reset CTM ???
   annotList = new Annots(xref, annots.fetch(xref, &obj));
   obj.free();
+#ifdef USE_ANNOTS_VIEW
   if (annotList->getNumAnnots() > 0) {
     if (globalParams->getPrintCommands()) {
       printf("***** Annotations\n");
     }
     for (i = 0; i < annotList->getNumAnnots(); ++i) {
-      annotList->getAnnot(i)->draw(gfx);
+        Annot *annot = annotList->getAnnot(i);
+        if ((annotDisplayDecideCbk &&
+             (*annotDisplayDecideCbk)(annot, annotDisplayDecideCbkData)) || 
+            !annotDisplayDecideCbk)
+          annot->draw(gfx); 
     }
     out->dump();
   }
+#endif
   delete annotList;
 
   delete gfx;