grab from latest android
git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/svg/SkSVGGradient.cpp b/src/svg/SkSVGGradient.cpp
new file mode 100644
index 0000000..c89bdc9
--- /dev/null
+++ b/src/svg/SkSVGGradient.cpp
@@ -0,0 +1,123 @@
+/* libs/graphics/svg/SkSVGGradient.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 "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;
+}
+