The Tor Browser: gfx/skia/trunk/src/utils/SkPathUtils.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/utils/SkPathUtils.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/utils/SkPathUtils.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  *  CAUTION: EXPERIMENTAL CODE
  *
  *  This code is not to be used and will not be supported
  *  if it fails on you. DO NOT USE!
  *
  */
 #include "SkPathUtils.h"
 #include "SkPath.h"
 #include "SkPathOps.h" // this can't be found, how do I link it?
 #include "SkRegion.h"
 typedef void (*line2path)(SkPath*, const char*, int, int);
 #define SQRT_2 1.41421356237f
 #define ON  0xFF000000 // black pixel
 #define OFF 0x00000000 // transparent pixel
 // assumes stride is in bytes
 /*
 static void FillRandomBits( int chars, char* bits ){
     SkTime time;
     SkRandom rand = SkRandom( time.GetMSecs() );
     for (int i = 0; i < chars; ++i){
         bits[i] = rand.nextU();
     }
 }OA
 */
 static int GetBit( const char* buffer, int x ) {
     int byte = x >> 3;
     int bit = x & 7;
     return buffer[byte] & (128 >> bit);
 }
 /*
 static void Line2path_pixel(SkPath* path, const char* line,
                             int lineIdx, int width) {
     for (int i = 0; i < width; ++i) {
         // simply makes every ON pixel into a rect path
         if (GetBit(line,i)) {
             path->addRect(SkRect::MakeXYWH(i, lineIdx, 1, 1),
                           SkPath::kCW_Direction);
         }
     }
 }
 static void Line2path_pixelCircle(SkPath* path, const char* line,
                                   int lineIdx, int width) {
     for (int i = 0; i < width; ++i) {
         // simply makes every ON pixel into a circle path
         if (GetBit(line,i)) {
             path->addCircle(i + SK_ScalarHalf,
                             lineIdx + SK_ScalarHalf,
                             SQRT_2 / 2.0f);
         }
     }
 }
 */
 static void Line2path_span(SkPath* path, const char* line,
                            int lineIdx, int width) {
     bool inRun = 0;
     int start = 1;
     for (int i = 0; i < width; ++i) {
         int curPixel = GetBit(line,i);
         if ( (curPixel!=0) != inRun ) { // if transition
             if (curPixel) { // if transition on
                 inRun = 1;
                 start = i; // mark beginning of span
             }else { // if transition off add the span as a path
                 inRun = 0;
                 path->addRect(SkRect::MakeXYWH(SkIntToScalar(start), SkIntToScalar(lineIdx),
                                                SkIntToScalar(i-start), SK_Scalar1),
                               SkPath::kCW_Direction);
             }
         }
     }
     if (inRun==1) { // close any open spans
         int end = 0;
         if ( GetBit(line,width-1) ) ++end;
         path->addRect(SkRect::MakeXYWH(SkIntToScalar(start), SkIntToScalar(lineIdx),
                                        SkIntToScalar(width - 1 + end - start), SK_Scalar1),
                       SkPath::kCW_Direction);
     } else if ( GetBit(line, width - 1) ) { // if last pixel on add
         path->addRect(SkRect::MakeXYWH(width - SK_Scalar1, SkIntToScalar(lineIdx),
                                        SK_Scalar1, SK_Scalar1),
                       SkPath::kCW_Direction);
     }
 }
 void SkPathUtils::BitsToPath_Path(SkPath* path,
                         const char* bitmap,
                         int w, int h, int stride) {
     // loop for every line in bitmap
     for (int i = 0; i < h; ++i) {
         // fn ptr handles each line separately
         //l2p_fn(path, &bitmap[i*stride], i, w);
         Line2path_span(path, &bitmap[i*stride], i, w);
     }
     Simplify(*path, path); // simplify resulting path.
 }
 void SkPathUtils::BitsToPath_Region(SkPath* path,
                                const char* bitmap,
                                int w, int h, int stride) {
     SkRegion region;
     // loop for each line
     for (int y = 0; y < h; ++y){
         bool inRun = 0;
         int start = 1;
         const char* line = &bitmap[y * stride];
         // loop for each pixel
         for (int i = 0; i < w; ++i) {
             int curPixel = GetBit(line,i);
             if ( (curPixel!=0) != inRun ) { // if transition
                 if (curPixel) { // if transition on
                     inRun = 1;
                     start = i; // mark beginning of span
                 }else { // if transition off add the span as a path
                     inRun = 0;
                     //add here
                     region.op(SkIRect::MakeXYWH(start, y, i-start, 1),
                               SkRegion::kUnion_Op );
                 }
             }
         }
         if (inRun==1) { // close any open spans
             int end = 0;
             if ( GetBit(line,w-1) ) ++end;
             // add the thing here
             region.op(SkIRect::MakeXYWH(start, y, w-1-start+end, 1),
                       SkRegion::kUnion_Op );
         } else if ( GetBit(line,w-1) ) { // if last pixel on add rect
             // add the thing here
             region.op(SkIRect::MakeXYWH(w-1, y, 1, 1),
                       SkRegion::kUnion_Op );
         }
     }
     // convert region to path
     region.getBoundaryPath(path);
 }

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gfx/skia/trunk/src/utils/SkPathUtils.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/utils/SkPathUtils.cpp