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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 "SkDrawGradient.h"
#include "SkAnimateMaker.h"
#include "SkAnimatorScript.h"
#include "SkGradientShader.h"
#if SK_USE_CONDENSED_INFO == 0
const SkMemberInfo SkDrawGradient::fInfo[] = {
SK_MEMBER_INHERITED,
SK_MEMBER_ARRAY(offsets, Float),
SK_MEMBER(unitMapper, String)
};
#endif
DEFINE_GET_MEMBER(SkDrawGradient);
SkDrawGradient::SkDrawGradient() {
}
SkDrawGradient::~SkDrawGradient() {
for (int index = 0; index < fDrawColors.count(); index++)
delete fDrawColors[index];
}
bool SkDrawGradient::addChild(SkAnimateMaker& , SkDisplayable* child) {
SkASSERT(child);
if (child->isColor()) {
SkDrawColor* color = (SkDrawColor*) child;
*fDrawColors.append() = color;
return true;
}
return false;
}
int SkDrawGradient::addPrelude() {
int count = fDrawColors.count();
fColors.setCount(count);
for (int index = 0; index < count; index++)
fColors[index] = fDrawColors[index]->color;
return count;
}
#ifdef SK_DUMP_ENABLED
void SkDrawGradient::dumpRest(SkAnimateMaker* maker) {
dumpAttrs(maker);
//can a gradient have no colors?
bool closedYet = false;
SkDisplayList::fIndent += 4;
for (SkDrawColor** ptr = fDrawColors.begin(); ptr < fDrawColors.end(); ptr++) {
if (closedYet == false) {
SkDebugf(">\n");
closedYet = true;
}
SkDrawColor* color = *ptr;
color->dump(maker);
}
SkDisplayList::fIndent -= 4;
dumpChildren(maker, closedYet); //dumps the matrix if it has one
}
#endif
void SkDrawGradient::onEndElement(SkAnimateMaker& maker) {
if (offsets.count() != 0) {
if (offsets.count() != fDrawColors.count()) {
maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsDontMatchColors);
return;
}
if (offsets[0] != 0) {
maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustStartWithZero);
return;
}
if (offsets[offsets.count()-1] != SK_Scalar1) {
maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustEndWithOne);
return;
}
for (int i = 1; i < offsets.count(); i++) {
if (offsets[i] <= offsets[i-1]) {
maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustIncrease);
return;
}
if (offsets[i] > SK_Scalar1) {
maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustBeNoMoreThanOne);
return;
}
}
}
INHERITED::onEndElement(maker);
}
#if SK_USE_CONDENSED_INFO == 0
const SkMemberInfo SkDrawLinearGradient::fInfo[] = {
SK_MEMBER_INHERITED,
SK_MEMBER_ARRAY(points, Float),
};
#endif
DEFINE_GET_MEMBER(SkDrawLinearGradient);
SkDrawLinearGradient::SkDrawLinearGradient() {
}
void SkDrawLinearGradient::onEndElement(SkAnimateMaker& maker)
{
if (points.count() != 4)
maker.setErrorCode(SkDisplayXMLParserError::kGradientPointsLengthMustBeFour);
INHERITED::onEndElement(maker);
}
#ifdef SK_DUMP_ENABLED
void SkDrawLinearGradient::dump(SkAnimateMaker* maker) {
dumpBase(maker);
dumpRest(maker);
}
#endif
SkShader* SkDrawLinearGradient::getShader() {
if (addPrelude() == 0 || points.count() != 4) {
return nullptr;
}
return SkGradientShader::MakeLinear((SkPoint*)points.begin(),
fColors.begin(), offsets.begin(), fColors.count(), (SkShader::TileMode) tileMode,
0, getMatrix()).release();
}
#if SK_USE_CONDENSED_INFO == 0
const SkMemberInfo SkDrawRadialGradient::fInfo[] = {
SK_MEMBER_INHERITED,
SK_MEMBER(center, Point),
SK_MEMBER(radius, Float)
};
#endif
DEFINE_GET_MEMBER(SkDrawRadialGradient);
SkDrawRadialGradient::SkDrawRadialGradient() : radius(0) {
center.set(0, 0);
}
#ifdef SK_DUMP_ENABLED
void SkDrawRadialGradient::dump(SkAnimateMaker* maker) {
dumpBase(maker);
dumpRest(maker);
}
#endif
SkShader* SkDrawRadialGradient::getShader() {
if (addPrelude() == 0) {
return nullptr;
}
return SkGradientShader::MakeRadial(center,
radius, fColors.begin(), offsets.begin(), fColors.count(), (SkShader::TileMode) tileMode,
0, getMatrix()).release();
}
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