1 files changed, 114 insertions, 0 deletions
diff --git a/svg/SkSVGGradient.cpp b/svg/SkSVGGradient.cpp
new file mode 100644
index 00000000..bbcca18f
--- /dev/null
+++ b/svg/SkSVGGradient.cpp
@@ -0,0 +1,114 @@
+
+/*
+ * 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;
+}