src/animator/SkDrawShader.cpp

/* libs/graphics/animator/SkDrawShader.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License"); 
** you may not use this file except in compliance with the License. 
** You may obtain a copy of the License at 
**
**     http://www.apache.org/licenses/LICENSE-2.0 
**
** Unless required by applicable law or agreed to in writing, software 
** distributed under the License is distributed on an "AS IS" BASIS, 
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
** See the License for the specific language governing permissions and 
** limitations under the License.
*/

#include "SkDrawShader.h"
#include "SkDrawBitmap.h"
#include "SkDrawMatrix.h"
#include "SkDrawPaint.h"
#include "SkTemplates.h"

#if SK_USE_CONDENSED_INFO == 0

const SkMemberInfo SkDrawShader::fInfo[] = {
    SK_MEMBER(matrix, Matrix),
    SK_MEMBER(tileMode, TileMode)
};

#endif

DEFINE_GET_MEMBER(SkDrawShader);

SkDrawShader::SkDrawShader() : matrix(NULL), 
    tileMode(SkShader::kClamp_TileMode) {
}

bool SkDrawShader::add() {
    if (fPaint->shader != (SkDrawShader*) -1)
        return true;
    fPaint->shader = this;
    fPaint->fOwnsShader = true;
    return false;
}

void SkDrawShader::addPostlude(SkShader* shader) {
    if (matrix)
        shader->setLocalMatrix(matrix->getMatrix());
}

#if SK_USE_CONDENSED_INFO == 0

const SkMemberInfo SkDrawBitmapShader::fInfo[] = {
    SK_MEMBER_INHERITED,
    SK_MEMBER(filterBitmap, Boolean),
    SK_MEMBER(image, BaseBitmap)
};

#endif

DEFINE_GET_MEMBER(SkDrawBitmapShader);

SkDrawBitmapShader::SkDrawBitmapShader() : filterBitmap(-1), image(NULL) {}

bool SkDrawBitmapShader::add() {
    if (fPaint->shader != (SkDrawShader*) -1)
        return true;
    fPaint->shader = this;
    fPaint->fOwnsShader = true;
    return false;
}

SkShader* SkDrawBitmapShader::getShader() {
    if (image == NULL)
        return NULL;
    
    // note: bitmap shader now supports independent tile modes for X and Y
    // we pass the same to both, but later we should extend this flexibility
    // to the xml (e.g. tileModeX="repeat" tileModeY="clmap")
    // 
    // oops, bitmapshader no longer takes filterBitmap, but deduces it at
    // draw-time from the paint 
    SkShader* shader  = SkShader::CreateBitmapShader(image->fBitmap, 
                                                    (SkShader::TileMode) tileMode,
                                                    (SkShader::TileMode) tileMode);
    SkAutoTDelete<SkShader> autoDel(shader);
    addPostlude(shader);
    (void)autoDel.detach();
    return shader;
}