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src/java.desktop/windows/native/libawt/java2d/windows/GDIRenderer.cpp

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rev 50364 : 8204211: windows : handle potential C++ exception in GDIRenderer


  68     jint x, y;
  69 
  70     // Fix for 4298688 - draw(Line) and Polygon omit last pixel
  71     // We will need to add a point if we need to close it off or
  72     // if we need to fix the endpoint to accommodate the Windows
  73     // habit of never drawing the last pixel of a Polyline.  Note
  74     // that if the polyline is already closed then neither fix
  75     // is needed because the last pixel is also the first pixel
  76     // and so will be drawn just fine.
  77     // Clarification for 4298688 - regression bug 4678208 points
  78     // out that we still need to fix the endpoint if the closed
  79     // polygon never went anywhere (all vertices on same coordinate).
  80     jint mx = xpoints[0];
  81     jint my = ypoints[0];
  82     BOOL isclosed = (xpoints[npoints-1] == mx && ypoints[npoints-1] == my);
  83     if ((close && !isclosed) || fixend) {
  84         outpoints++;
  85         *pNpoints = outpoints;
  86     }
  87     if (outpoints > POLYTEMPSIZE) {

  88         pPoints = (POINT *) SAFE_SIZE_ARRAY_ALLOC(safe_Malloc, sizeof(POINT), outpoints);



  89     }
  90     BOOL isempty = fixend;
  91     for (int i = 0; i < npoints; i++) {
  92         x = xpoints[i];
  93         y = ypoints[i];
  94         isempty = isempty && (x == mx && y == my);
  95         pPoints[i].x = CLAMP(x + transx);
  96         pPoints[i].y = CLAMP(y + transy);
  97     }
  98     if (close && !isclosed) {
  99         pPoints[npoints] = pPoints[0];
 100     } else if (fixend) {
 101         if (!close || isempty) {
 102             // Fix for 4298688 - draw(Line) and Polygon omit last pixel
 103             // Fix up the last segment by adding another segment after
 104             // it that is only 1 pixel long.  The first pixel of that
 105             // segment will be drawn, but the second pixel is the one
 106             // that Windows omits.
 107             pPoints[npoints] = pPoints[npoints-1];
 108             pPoints[npoints].x++;




  68     jint x, y;
  69 
  70     // Fix for 4298688 - draw(Line) and Polygon omit last pixel
  71     // We will need to add a point if we need to close it off or
  72     // if we need to fix the endpoint to accommodate the Windows
  73     // habit of never drawing the last pixel of a Polyline.  Note
  74     // that if the polyline is already closed then neither fix
  75     // is needed because the last pixel is also the first pixel
  76     // and so will be drawn just fine.
  77     // Clarification for 4298688 - regression bug 4678208 points
  78     // out that we still need to fix the endpoint if the closed
  79     // polygon never went anywhere (all vertices on same coordinate).
  80     jint mx = xpoints[0];
  81     jint my = ypoints[0];
  82     BOOL isclosed = (xpoints[npoints-1] == mx && ypoints[npoints-1] == my);
  83     if ((close && !isclosed) || fixend) {
  84         outpoints++;
  85         *pNpoints = outpoints;
  86     }
  87     if (outpoints > POLYTEMPSIZE) {
  88         try {
  89             pPoints = (POINT *) SAFE_SIZE_ARRAY_ALLOC(safe_Malloc, sizeof(POINT), outpoints);
  90         } catch (const std::bad_alloc&) {
  91             return NULL;
  92         }
  93     }
  94     BOOL isempty = fixend;
  95     for (int i = 0; i < npoints; i++) {
  96         x = xpoints[i];
  97         y = ypoints[i];
  98         isempty = isempty && (x == mx && y == my);
  99         pPoints[i].x = CLAMP(x + transx);
 100         pPoints[i].y = CLAMP(y + transy);
 101     }
 102     if (close && !isclosed) {
 103         pPoints[npoints] = pPoints[0];
 104     } else if (fixend) {
 105         if (!close || isempty) {
 106             // Fix for 4298688 - draw(Line) and Polygon omit last pixel
 107             // Fix up the last segment by adding another segment after
 108             // it that is only 1 pixel long.  The first pixel of that
 109             // segment will be drawn, but the second pixel is the one
 110             // that Windows omits.
 111             pPoints[npoints] = pPoints[npoints-1];
 112             pPoints[npoints].x++;


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