another bitmap bbox fix

diff --git a/lib/pdf/BitmapOutputDev.cc b/lib/pdf/BitmapOutputDev.cc
index c9bcbb2..320fc3f 100644 (file)
--- a/lib/pdf/BitmapOutputDev.cc
+++ b/lib/pdf/BitmapOutputDev.cc
@@ -214,12 +214,26 @@ void BitmapOutputDev::flushBitmap()
        int ymax = b->ymax;
 
        /* clip against (-movex, -movey, -movex+width, -movey+height) */
-       if(xmin < -this->movex) xmin = -this->movex;
-       if(ymin < -this->movey) ymin = -this->movey;
-       if(xmax > -this->movex + this->width) xmax = -this->movex+this->width;
-       if(ymax > -this->movey + this->height) ymax = -this->movey+this->height;
 
-       msg("<verbose> Flushing bitmap (bbox: %d,%d,%d,%d)", xmin,ymin,xmax,ymax);
+       msg("<verbose> Flushing bitmap (bbox: %d,%d,%d,%d %dx%d) (clipped against %d,%d,%d,%d)", xmin,ymin,xmax,ymax, xmax-xmin, ymax-ymin,
+               -this->movex, -this->movey, -this->movex+this->width, -this->movey+this->height);
+
+       if(xmin < -this->movex) {
+           xmin = -this->movex;
+           if(xmax < -this->movex) continue;
+       }
+       if(ymin < -this->movey) {
+           ymin = -this->movey;
+           if(ymax < -this->movey) continue;
+       }
+       if(xmax >= -this->movex + this->width) {
+           xmax = -this->movex+this->width;
+           if(xmin >= -this->movex + this->width) continue;
+       }
+       if(ymax >= -this->movey + this->height) {
+           ymax = -this->movey+this->height;
+           if(ymin >= -this->movey + this->height) continue;
+       }
        
        if((xmax-xmin)<=0 || (ymax-ymin)<=0) // no bitmap, nothing to do
            continue;