The Tor Browser: gfx/skia/trunk/src/svg/SkSVGGradient.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     2 /*

     3  * Copyright 2006 The Android Open Source Project

     4  *

     5  * Use of this source code is governed by a BSD-style license that can be

     6  * found in the LICENSE file.

     7  */

    10 #include "SkSVGGradient.h"

    11 #include "SkSVGParser.h"

    12 #include "SkSVGStop.h"

    14 SkSVGGradient::SkSVGGradient() {

    15 }

    17 SkSVGElement* SkSVGGradient::getGradient() {

    18     return this;

    19 }

    21 bool SkSVGGradient::isDef() {

    22     return true;

    23 }

    25 bool SkSVGGradient::isNotDef() {

    26     return false;

    27 }

    29 void SkSVGGradient::translate(SkSVGParser& parser, bool defState) {

    30     INHERITED::translate(parser, defState);

    31     // !!! no support for 'objectBoundingBox' yet

    32     bool first = true;

    33     bool addedFirst = false;

    34     bool addedLast = false;

    35     SkString offsets("[");

    36     SkString* lastOffset = NULL;

    37     for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {

    38         SkASSERT((*ptr)->getType() == SkSVGType_Stop);

    39         SkSVGStop* stop = (SkSVGStop*) *ptr;

    40         if (first && stop->f_offset.equals("0") == false) {

    41             addedFirst = true;

    42             offsets.append("0,");

    43         }

    44         SkString* thisOffset = &stop->f_offset;

    45         if (lastOffset && thisOffset->equals(*lastOffset)) {

    46             if (thisOffset->equals("1")) {

    47                 offsets.remove(offsets.size() - 2, 2);

    48                 offsets.append(".999,");

    49             } else {

    50                 SkASSERT(0); // !!! need to write this case

    51             }

    52         }

    53         offsets.append(*thisOffset);

    54         if (ptr == fChildren.end() - 1) { // last

    55             if (stop->f_offset.equals("1") == false) {

    56                 offsets.append(",1");

    57                 addedLast = true;

    58             }

    59         } else

    60             offsets.appendUnichar(',');

    61         first = false;

    62         lastOffset = thisOffset;

    63     }

    64     offsets.appendUnichar(']');

    65     parser._addAttribute("offsets", offsets);

    66     if (addedFirst)

    67         parser.translate(*fChildren.begin(), defState);

    68     for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++)

    69         parser.translate(*ptr, defState);

    70     if (addedLast)

    71         parser.translate(*(fChildren.end() - 1), defState);

    72 }

    74 void SkSVGGradient::translateGradientUnits(SkString& units) {

    75     // !!! no support for 'objectBoundingBox' yet

    76     SkASSERT(strcmp(units.c_str(), "userSpaceOnUse") == 0);

    77 }

    79 void SkSVGGradient::write(SkSVGParser& parser, SkString& baseColor) {

    80     if (baseColor.c_str()[0] != '#')

    81         return;

    82     SkSVGPaint* saveHead = parser.fHead;

    83     parser.fHead = &fPaintState;

    84     parser.fSuppressPaint = true;

    85     SkString originalID(f_id);

    86     f_id.set("mask"); // write out gradient named given name + color (less initial #)

    87     f_id.append(baseColor.c_str() + 1);

    88     SkString originalColors;

    89     for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {

    90         SkSVGStop* colorElement = (SkSVGStop*) *ptr;

    91         SkString& color = colorElement->fPaintState.f_stopColor;

    92         originalColors.append(color);

    93         originalColors.appendUnichar(',');

    94         SkASSERT(color.c_str()[0] == '#');

    95         SkString replacement;

    96         replacement.set("0x");

    97         replacement.append(color.c_str() + 1, 2); // add stop colors using given color, turning existing stop color into alpha

    98         SkASSERT(baseColor.c_str()[0] == '#');

    99         SkASSERT(baseColor.size() == 7);

   100         replacement.append(baseColor.c_str() + 1);

   101         color.set(replacement);

   102     }

   103     translate(parser, true);

   104     const char* originalPtr = originalColors.c_str(); // restore original gradient values

   105     for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {

   106         SkSVGStop* color = (SkSVGStop*) *ptr;

   107         const char* originalEnd = strchr(originalPtr, ',');

   108         color->fPaintState.f_stopColor.set(originalPtr, originalEnd - originalPtr);

   109         originalPtr = originalEnd + 1;

   110     }

   111     f_id.set(originalID);

   112     parser.fSuppressPaint = false;

   113     parser.fHead = saveHead;

   114 }

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