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-rw-r--r--src/core/SkComposeShader.cpp108
1 files changed, 50 insertions, 58 deletions
diff --git a/src/core/SkComposeShader.cpp b/src/core/SkComposeShader.cpp
index 7e566a3..62bb2d6 100644
--- a/src/core/SkComposeShader.cpp
+++ b/src/core/SkComposeShader.cpp
@@ -2,16 +2,16 @@
**
** 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
+** 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
+** 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
+** 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.
*/
@@ -20,40 +20,36 @@
#include "SkColorPriv.h"
#include "SkXfermode.h"
-//////////////////////////////////////////////////////////////////////////////////////
-
-SkComposeShader::SkComposeShader(SkShader* sA, SkShader* sB, SkXfermode* mode)
-{
+///////////////////////////////////////////////////////////////////////////////
+
+SkComposeShader::SkComposeShader(SkShader* sA, SkShader* sB, SkXfermode* mode) {
fShaderA = sA; sA->ref();
fShaderB = sB; sB->ref();
// mode may be null
- fMode = mode; mode->safeRef();
+ fMode = mode;
+ SkSafeRef(mode);
}
SkComposeShader::SkComposeShader(SkFlattenableReadBuffer& buffer) :
- INHERITED(buffer)
-{
+ INHERITED(buffer) {
fShaderA = static_cast<SkShader*>(buffer.readFlattenable());
fShaderB = static_cast<SkShader*>(buffer.readFlattenable());
fMode = static_cast<SkXfermode*>(buffer.readFlattenable());
}
-SkComposeShader::~SkComposeShader()
-{
- fMode->safeUnref(); // may be null
+SkComposeShader::~SkComposeShader() {
+ SkSafeUnref(fMode);
fShaderB->unref();
fShaderA->unref();
}
-void SkComposeShader::beginSession()
-{
+void SkComposeShader::beginSession() {
this->INHERITED::beginSession();
fShaderA->beginSession();
fShaderB->beginSession();
}
-void SkComposeShader::endSession()
-{
+void SkComposeShader::endSession() {
fShaderA->endSession();
fShaderB->endSession();
this->INHERITED::endSession();
@@ -61,14 +57,13 @@ void SkComposeShader::endSession()
class SkAutoAlphaRestore {
public:
- SkAutoAlphaRestore(SkPaint* paint, uint8_t newAlpha)
- {
+ SkAutoAlphaRestore(SkPaint* paint, uint8_t newAlpha) {
fAlpha = paint->getAlpha();
fPaint = paint;
paint->setAlpha(newAlpha);
}
- ~SkAutoAlphaRestore()
- {
+
+ ~SkAutoAlphaRestore() {
fPaint->setAlpha(fAlpha);
}
private:
@@ -76,8 +71,7 @@ private:
uint8_t fAlpha;
};
-void SkComposeShader::flatten(SkFlattenableWriteBuffer& buffer)
-{
+void SkComposeShader::flatten(SkFlattenableWriteBuffer& buffer) {
this->INHERITED::flatten(buffer);
buffer.writeFlattenable(fShaderA);
buffer.writeFlattenable(fShaderB);
@@ -90,19 +84,19 @@ void SkComposeShader::flatten(SkFlattenableWriteBuffer& buffer)
*/
bool SkComposeShader::setContext(const SkBitmap& device,
const SkPaint& paint,
- const SkMatrix& matrix)
-{
- if (!this->INHERITED::setContext(device, paint, matrix))
+ const SkMatrix& matrix) {
+ if (!this->INHERITED::setContext(device, paint, matrix)) {
return false;
+ }
// we preconcat our localMatrix (if any) with the device matrix
// before calling our sub-shaders
SkMatrix tmpM;
-
+
(void)this->getLocalMatrix(&tmpM);
tmpM.setConcat(matrix, tmpM);
-
+
SkAutoAlphaRestore restore(const_cast<SkPaint*>(&paint), 0xFF);
return fShaderA->setContext(device, paint, tmpM) &&
@@ -113,58 +107,56 @@ bool SkComposeShader::setContext(const SkBitmap& device,
// take up too much stack-space (each element is 4 bytes)
#define TMP_COLOR_COUNT 64
-void SkComposeShader::shadeSpan(int x, int y, SkPMColor result[], int count)
-{
+void SkComposeShader::shadeSpan(int x, int y, SkPMColor result[], int count) {
SkShader* shaderA = fShaderA;
SkShader* shaderB = fShaderB;
SkXfermode* mode = fMode;
unsigned scale = SkAlpha255To256(this->getPaintAlpha());
-
+
SkPMColor tmp[TMP_COLOR_COUNT];
- if (NULL == mode) // implied SRC_OVER
- {
+ if (NULL == mode) { // implied SRC_OVER
// TODO: when we have a good test-case, should use SkBlitRow::Proc32
// for these loops
do {
int n = count;
- if (n > TMP_COLOR_COUNT)
+ if (n > TMP_COLOR_COUNT) {
n = TMP_COLOR_COUNT;
-
+ }
+
shaderA->shadeSpan(x, y, result, n);
shaderB->shadeSpan(x, y, tmp, n);
- if (256 == scale)
- {
- for (int i = 0; i < n; i++)
+ if (256 == scale) {
+ for (int i = 0; i < n; i++) {
result[i] = SkPMSrcOver(tmp[i], result[i]);
+ }
+ } else {
+ for (int i = 0; i < n; i++) {
+ result[i] = SkAlphaMulQ(SkPMSrcOver(tmp[i], result[i]),
+ scale);
+ }
}
- else
- {
- for (int i = 0; i < n; i++)
- result[i] = SkAlphaMulQ(SkPMSrcOver(tmp[i], result[i]), scale);
- }
-
+
result += n;
x += n;
count -= n;
} while (count > 0);
- }
- else // use mode for the composition
- {
+ } else { // use mode for the composition
do {
int n = count;
- if (n > TMP_COLOR_COUNT)
+ if (n > TMP_COLOR_COUNT) {
n = TMP_COLOR_COUNT;
-
+ }
+
shaderA->shadeSpan(x, y, result, n);
shaderB->shadeSpan(x, y, tmp, n);
mode->xfer32(result, tmp, n, NULL);
- if (256 == scale)
- {
- for (int i = 0; i < n; i++)
+ if (256 == scale) {
+ for (int i = 0; i < n; i++) {
result[i] = SkAlphaMulQ(result[i], scale);
+ }
}
result += n;
@@ -173,4 +165,4 @@ void SkComposeShader::shadeSpan(int x, int y, SkPMColor result[], int count)
} while (count > 0);
}
}
-
+
generated by cgit v1.1 at 2024-12-22 18:51:36 +0000