grab from latest android

git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 168 insertions, 0 deletions

diff --git a/src/animator/SkDisplayList.cpp b/src/animator/SkDisplayList.cpp
new file mode 100644
index 0000000000..57f29f7a21
--- /dev/null
+++ b/src/animator/SkDisplayList.cpp
@@ -0,0 +1,168 @@
+/* libs/graphics/animator/SkDisplayList.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 "SkDisplayList.h"
+#include "SkAnimateActive.h"
+#include "SkAnimateBase.h"
+#include "SkAnimateMaker.h"
+#include "SkDisplayApply.h"
+#include "SkDrawable.h"
+#include "SkDrawGroup.h"
+#include "SkDrawMatrix.h"
+#include "SkInterpolator.h"
+#include "SkTime.h"
+
+SkDisplayList::SkDisplayList() : fDrawBounds(true), fUnionBounds(false), fInTime(0) {
+}
+
+SkDisplayList::~SkDisplayList() {
+}
+
+void SkDisplayList::append(SkActive* active) {
+    *fActiveList.append() = active;
+}
+
+bool SkDisplayList::draw(SkAnimateMaker& maker, SkMSec inTime) {
+    validate();
+    fInTime = inTime;
+    bool result = false;
+    fInvalBounds.setEmpty();
+    if (fDrawList.count()) {
+        for (SkActive** activePtr = fActiveList.begin(); activePtr < fActiveList.end(); activePtr++) {
+            SkActive* active = *activePtr;
+            active->reset();
+        }
+        for (int index = 0; index < fDrawList.count(); index++) {
+            SkDrawable* draw = fDrawList[index];
+            draw->initialize(); // allow matrices to reset themselves
+            SkASSERT(draw->isDrawable());
+            validate();
+            result |= draw->draw(maker);
+        }
+    }
+    validate();
+    return result;
+}
+
+int SkDisplayList::findGroup(SkDrawable* match, SkTDDrawableArray** list,
+        SkGroup** parent, SkGroup** found, SkTDDrawableArray**grandList) { 
+    *parent = NULL;
+    *list = &fDrawList;
+    *grandList = &fDrawList;
+    return SearchForMatch(match, list, parent, found, grandList);
+}
+
+void SkDisplayList::hardReset() {
+    fDrawList.reset();
+    fActiveList.reset();
+}
+
+bool SkDisplayList::onIRect(const SkIRect& r) {
+    fBounds = r;
+    return fDrawBounds;
+}
+
+int SkDisplayList::SearchForMatch(SkDrawable* match, SkTDDrawableArray** list,
+        SkGroup** parent, SkGroup** found, SkTDDrawableArray**grandList) { 
+    *found = NULL;
+    for (int index = 0; index < (*list)->count(); index++) {
+        SkDrawable* draw = (**list)[index];
+        if (draw == match)
+            return index;
+        if (draw->isApply()) {
+            SkApply* apply = (SkApply*) draw;
+            if (apply->scope == match)
+                return index;
+            if (apply->scope->isGroup() && SearchGroupForMatch(apply->scope, match, list, parent, found, grandList, index))
+                return index;
+            if (apply->mode == SkApply::kMode_create) {
+                for (SkDrawable** ptr = apply->fScopes.begin(); ptr < apply->fScopes.end(); ptr++) {
+                    SkDrawable* scope = *ptr;
+                    if (scope == match)
+                        return index;
+                    //perhaps should call SearchGroupForMatch here as well (on scope)
+                }
+            } 
+        }
+        if (draw->isGroup() && SearchGroupForMatch(draw, match, list, parent, found, grandList, index)) 
+            return index;
+        
+    }
+    return -1;
+}
+
+bool SkDisplayList::SearchGroupForMatch(SkDrawable* draw, SkDrawable* match, SkTDDrawableArray** list,
+        SkGroup** parent, SkGroup** found, SkTDDrawableArray** grandList, int &index) {
+            SkGroup* group = (SkGroup*) draw;
+            if (group->getOriginal() == match)
+                return true;
+            SkTDDrawableArray* saveList = *list;
+            int groupIndex = group->findGroup(match, list, parent, found, grandList);
+            if (groupIndex >= 0) {
+                *found = group;
+                index = groupIndex;
+                return true;
+            }
+            *list = saveList;
+            return false;
+        }
+
+void SkDisplayList::reset() {
+    for (int index = 0; index < fDrawList.count(); index++) {
+        SkDrawable* draw = fDrawList[index];
+        if (draw->isApply() == false)
+            continue;
+        SkApply* apply = (SkApply*) draw;
+        apply->reset();
+    }           
+}
+
+void SkDisplayList::remove(SkActive* active) {
+    int index = fActiveList.find(active);
+    SkASSERT(index >= 0);
+    fActiveList.remove(index);  // !!! could use shuffle instead
+    SkASSERT(fActiveList.find(active) < 0);
+}
+
+#ifdef SK_DUMP_ENABLED
+int SkDisplayList::fDumpIndex;
+int SkDisplayList::fIndent;
+
+void SkDisplayList::dump(SkAnimateMaker* maker) {
+    fIndent = 0;
+    dumpInner(maker);
+}
+
+void SkDisplayList::dumpInner(SkAnimateMaker* maker) {
+    for (int index = 0; index < fDrawList.count(); index++) {
+        fDumpIndex = index;
+        fDrawList[fDumpIndex]->dump(maker);
+    }
+}
+
+#endif
+
+#ifdef SK_DEBUG
+void SkDisplayList::validate() {
+    for (int index = 0; index < fDrawList.count(); index++) {
+        SkDrawable* draw = fDrawList[index];
+        draw->validate();
+    }
+}
+#endif
+
+