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/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkSVGGradient.h"
#include "SkSVGParser.h"
#include "SkSVGStop.h"
SkSVGGradient::SkSVGGradient() {
}
SkSVGElement* SkSVGGradient::getGradient() {
return this;
}
bool SkSVGGradient::isDef() {
return true;
}
bool SkSVGGradient::isNotDef() {
return false;
}
void SkSVGGradient::translate(SkSVGParser& parser, bool defState) {
INHERITED::translate(parser, defState);
// !!! no support for 'objectBoundingBox' yet
bool first = true;
bool addedFirst = false;
bool addedLast = false;
SkString offsets("[");
SkString* lastOffset = NULL;
for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
SkASSERT((*ptr)->getType() == SkSVGType_Stop);
SkSVGStop* stop = (SkSVGStop*) *ptr;
if (first && stop->f_offset.equals("0") == false) {
addedFirst = true;
offsets.append("0,");
}
SkString* thisOffset = &stop->f_offset;
if (lastOffset && thisOffset->equals(*lastOffset)) {
if (thisOffset->equals("1")) {
offsets.remove(offsets.size() - 2, 2);
offsets.append(".999,");
} else {
SkASSERT(0); // !!! need to write this case
}
}
offsets.append(*thisOffset);
if (ptr == fChildren.end() - 1) { // last
if (stop->f_offset.equals("1") == false) {
offsets.append(",1");
addedLast = true;
}
} else
offsets.appendUnichar(',');
first = false;
lastOffset = thisOffset;
}
offsets.appendUnichar(']');
parser._addAttribute("offsets", offsets);
if (addedFirst)
parser.translate(*fChildren.begin(), defState);
for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++)
parser.translate(*ptr, defState);
if (addedLast)
parser.translate(*(fChildren.end() - 1), defState);
}
void SkSVGGradient::translateGradientUnits(SkString& units) {
// !!! no support for 'objectBoundingBox' yet
SkASSERT(strcmp(units.c_str(), "userSpaceOnUse") == 0);
}
void SkSVGGradient::write(SkSVGParser& parser, SkString& baseColor) {
if (baseColor.c_str()[0] != '#')
return;
SkSVGPaint* saveHead = parser.fHead;
parser.fHead = &fPaintState;
parser.fSuppressPaint = true;
SkString originalID(f_id);
f_id.set("mask"); // write out gradient named given name + color (less initial #)
f_id.append(baseColor.c_str() + 1);
SkString originalColors;
for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
SkSVGStop* colorElement = (SkSVGStop*) *ptr;
SkString& color = colorElement->fPaintState.f_stopColor;
originalColors.append(color);
originalColors.appendUnichar(',');
SkASSERT(color.c_str()[0] == '#');
SkString replacement;
replacement.set("0x");
replacement.append(color.c_str() + 1, 2); // add stop colors using given color, turning existing stop color into alpha
SkASSERT(baseColor.c_str()[0] == '#');
SkASSERT(baseColor.size() == 7);
replacement.append(baseColor.c_str() + 1);
color.set(replacement);
}
translate(parser, true);
const char* originalPtr = originalColors.c_str(); // restore original gradient values
for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
SkSVGStop* color = (SkSVGStop*) *ptr;
const char* originalEnd = strchr(originalPtr, ',');
color->fPaintState.f_stopColor.set(originalPtr, originalEnd - originalPtr);
originalPtr = originalEnd + 1;
}
f_id.set(originalID);
parser.fSuppressPaint = false;
parser.fHead = saveHead;
}
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