1 files changed, 214 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/android/BaseLayerAndroid.cpp b/WebCore/platform/graphics/android/BaseLayerAndroid.cpp
new file mode 100644
index 0000000..0bb2928
--- /dev/null
+++ b/WebCore/platform/graphics/android/BaseLayerAndroid.cpp
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2010, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "BaseLayerAndroid.h"
+
+#if USE(ACCELERATED_COMPOSITING)
+#include "GLUtils.h"
+#include "ShaderProgram.h"
+#include "SkCanvas.h"
+#include "TilesManager.h"
+#include <GLES2/gl2.h>
+#include <wtf/CurrentTime.h>
+#endif // USE(ACCELERATED_COMPOSITING)
+
+#ifdef DEBUG
+
+#include <cutils/log.h>
+#include <wtf/text/CString.h>
+
+#undef XLOG
+#define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "BaseLayerAndroid", __VA_ARGS__)
+
+#else
+
+#undef XLOG
+#define XLOG(...)
+
+#endif // DEBUG
+
+namespace WebCore {
+
+using namespace android;
+
+#ifdef DEBUG_COUNT
+static int gBaseLayerAndroidCount = 0;
+int BaseLayerAndroid::count()
+{
+    return gBaseLayerAndroidCount;
+}
+#endif
+
+BaseLayerAndroid::BaseLayerAndroid()
+{
+#ifdef DEBUG_COUNT
+    gBaseLayerAndroidCount++;
+#endif
+}
+
+BaseLayerAndroid::~BaseLayerAndroid()
+{
+    m_content.clear();
+#ifdef DEBUG_COUNT
+    gBaseLayerAndroidCount--;
+#endif
+}
+
+void BaseLayerAndroid::setContent(const PictureSet& src)
+{
+    m_content.set(src);
+}
+
+#if USE(ACCELERATED_COMPOSITING)
+bool BaseLayerAndroid::drawBasePictureInGL(SkRect& viewport, float scale)
+{
+    if (m_content.isEmpty())
+        return false;
+    if (!m_glWebViewState)
+        return false;
+
+    double currentTime = WTF::currentTime();
+    bool goingDown = m_previousVisible.fTop - viewport.fTop <= 0;
+    bool goingLeft = m_previousVisible.fLeft - viewport.fLeft >= 0;
+
+    m_glWebViewState->setViewport(viewport, scale);
+
+    int firstTileX = m_glWebViewState->firstTileX();
+    int firstTileY = m_glWebViewState->firstTileY();
+
+    XLOG("drawBasePicture, TX: %d, TY: %d scale %.2f", firstTileX, firstTileY, scale);
+    if (scale == m_glWebViewState->currentScale()) {
+        m_glWebViewState->setOriginalTilesPosX(firstTileX);
+        m_glWebViewState->setOriginalTilesPosY(firstTileY);
+    }
+
+    // If we have a different scale than the current one, we have to
+    // decide what to do. The current behaviour is to delay an update,
+    // so that we do not slow down zooming unnecessarily.
+    if (m_glWebViewState->currentScale() != scale
+        && (m_glWebViewState->scaleRequestState() == GLWebViewState::kNoScaleRequest
+            || m_glWebViewState->scaleRequestState() == GLWebViewState::kWillScheduleRequest
+            || m_glWebViewState->futureScale() != scale)) {
+        m_glWebViewState->scheduleUpdate(currentTime, scale);
+    }
+
+    float transparency = 1;
+    bool doSwap = false;
+
+    // Here we have to schedule the painting of the tiles corresponding
+    // to the new tiles for the new scale factor (see above)
+    if (m_glWebViewState->scaleRequestState() == GLWebViewState::kRequestNewScale
+        || m_glWebViewState->scaleRequestState() == GLWebViewState::kReceivedNewScale) {
+        TiledPage* nextTiledPage = m_glWebViewState->backPage();
+        nextTiledPage->setScale(scale);
+
+        // Check if the page is ready...
+        if (m_glWebViewState->scaleRequestState() == GLWebViewState::kRequestNewScale
+            && nextTiledPage->ready(firstTileX, firstTileY)) {
+            m_glWebViewState->setScaleRequestState(GLWebViewState::kReceivedNewScale);
+        }
+
+        // If the page is ready, display it. We do a short transition between
+        // the two pages (current one and future one with the new scale factor)
+        if (m_glWebViewState->scaleRequestState() == GLWebViewState::kReceivedNewScale) {
+            double transitionTime = m_glWebViewState->transitionTime(currentTime);
+            transparency = m_glWebViewState->transparency(currentTime);
+
+            float newTilesTransparency = 1;
+            if (scale < m_glWebViewState->currentScale())
+                newTilesTransparency = 1 - transparency;
+
+            nextTiledPage->draw(newTilesTransparency, viewport,
+                                firstTileX, firstTileY);
+
+            // The transition between the two pages is finished, swap them
+            if (currentTime > transitionTime) {
+                m_glWebViewState->setCurrentScale(scale);
+                m_glWebViewState->resetTransitionTime();
+                doSwap = true;
+            }
+        } else {
+            // If the page is not ready, schedule it if needed.
+            nextTiledPage->prepare(goingDown, goingLeft, firstTileX, firstTileY);
+        }
+    }
+
+    // Display the current page
+    TiledPage* tiledPage = m_glWebViewState->frontPage();
+    tiledPage->setScale(m_glWebViewState->currentScale());
+    int originalTX = m_glWebViewState->originalTilesPosX();
+    int originalTY = m_glWebViewState->originalTilesPosY();
+    tiledPage->prepare(goingDown, goingLeft, originalTX, originalTY);
+    tiledPage->draw(transparency, viewport, originalTX, originalTY);
+
+    bool ret = false;
+    if (!tiledPage->ready(originalTX, originalTY)
+        || m_glWebViewState->scaleRequestState() != GLWebViewState::kNoScaleRequest)
+      ret = true;
+
+    if (doSwap)
+        m_glWebViewState->swapPages();
+
+    return ret;
+}
+#endif // USE(ACCELERATED_COMPOSITING)
+
+bool BaseLayerAndroid::drawGL(IntRect& viewRect, SkRect& visibleRect,
+                              float scale, SkColor color)
+{
+    bool ret = false;
+#if USE(ACCELERATED_COMPOSITING)
+    int left = viewRect.x();
+    int top = viewRect.y();
+    int width = viewRect.width();
+    int height = viewRect.height();
+    XLOG("drawBasePicture drawGL() viewRect: %d, %d, %d, %d",
+         left, top, width, height);
+
+    glEnable(GL_SCISSOR_TEST);
+
+    glScissor(left, top, width, height);
+    glClearColor((float)SkColorGetR(color) / 255.0,
+                 (float)SkColorGetG(color) / 255.0,
+                 (float)SkColorGetB(color) / 255.0, 1);
+    glClear(GL_COLOR_BUFFER_BIT);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    glViewport(left, top, width, height);
+    ShaderProgram* shader = TilesManager::instance()->shader();
+    glUseProgram(shader->program());
+    glUniform1i(shader->textureSampler(), 0);
+
+    ret = drawBasePictureInGL(visibleRect, scale);
+
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+    m_previousVisible = visibleRect;
+#endif // USE(ACCELERATED_COMPOSITING)
+    return ret;
+}
+
+} // namespace WebCore