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Diffstat (limited to 'Source/WebCore/platform/graphics/android/ZoomManager.cpp')
| -rw-r--r-- | Source/WebCore/platform/graphics/android/ZoomManager.cpp | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/Source/WebCore/platform/graphics/android/ZoomManager.cpp b/Source/WebCore/platform/graphics/android/ZoomManager.cpp deleted file mode 100644 index 35100ae..0000000 --- a/Source/WebCore/platform/graphics/android/ZoomManager.cpp +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright 2011, 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. - */ - -#define LOG_TAG "ZoomManager" -#define LOG_NDEBUG 1 - -#include "config.h" -#include "ZoomManager.h" - -#include "AndroidLog.h" -#include "GLWebViewState.h" - -#if USE(ACCELERATED_COMPOSITING) - -namespace WebCore { - -using namespace android; - -ZoomManager::ZoomManager(GLWebViewState* state) - : m_scaleRequestState(kNoScaleRequest) - , m_currentScale(-1) - , m_futureScale(-1) - , m_layersScale(-1) - , m_updateTime(-1) - , m_transitionTime(-1) - , m_glWebViewState(state) -{ -} - -void ZoomManager::scheduleUpdate(const double& currentTime, - const SkIRect& viewport, float scale) -{ - // if no update time, set it - if (updateTime() == -1) { - m_scaleRequestState = kWillScheduleRequest; - setUpdateTime(currentTime + s_updateInitialDelay); - setFutureScale(scale); - m_glWebViewState->setFutureViewport(viewport); - return; - } - - if (currentTime < updateTime()) - return; - - // we reached the scheduled update time, check if we can update - if (futureScale() == scale) { - // we are still with the previous scale, let's go - // with the update - m_scaleRequestState = kRequestNewScale; - setUpdateTime(-1); - } else { - // we reached the update time, but the planned update was for - // a different scale factor -- meaning the user is still probably - // in the process of zooming. Let's push the update time a bit. - setUpdateTime(currentTime + s_updateDelay); - setFutureScale(scale); - m_glWebViewState->setFutureViewport(viewport); - } -} - -double ZoomManager::zoomInTransitionTime(double currentTime) -{ - if (m_transitionTime == -1) - m_transitionTime = currentTime + s_zoomInTransitionDelay; - return m_transitionTime; -} - -double ZoomManager::zoomOutTransitionTime(double currentTime) -{ - if (m_transitionTime == -1) - m_transitionTime = currentTime + s_zoomOutTransitionDelay; - return m_transitionTime; -} - -float ZoomManager::zoomInTransparency(double currentTime) -{ - float t = zoomInTransitionTime(currentTime) - currentTime; - t *= s_invZoomInTransitionDelay; - return fmin(1, fmax(0, t)); -} - -float ZoomManager::zoomOutTransparency(double currentTime) -{ - float t = zoomOutTransitionTime(currentTime) - currentTime; - t *= s_invZoomOutTransitionDelay; - return fmin(1, fmax(0, t)); -} - -bool ZoomManager::swapPages() -{ - bool reset = m_scaleRequestState != kNoScaleRequest; - m_scaleRequestState = kNoScaleRequest; - return reset; -} - -void ZoomManager::processNewScale(double currentTime, float scale) -{ - m_prepareNextTiledPage = false; - m_zooming = false; - const SkIRect& viewportTileBounds = m_glWebViewState->viewportTileBounds(); - - if (scale == m_currentScale - || m_glWebViewState->preZoomBounds().isEmpty()) - m_glWebViewState->setPreZoomBounds(viewportTileBounds); - - // 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_currentScale != scale - && (m_scaleRequestState == ZoomManager::kNoScaleRequest - || m_futureScale != scale)) - || m_scaleRequestState == ZoomManager::kWillScheduleRequest) { - - // schedule the new Zoom request - scheduleUpdate(currentTime, viewportTileBounds, scale); - - // If it's a new request, we will have to prepare the page. - if (m_scaleRequestState == ZoomManager::kRequestNewScale) - m_prepareNextTiledPage = true; - } - - // If the viewport has changed since we scheduled the request, we also need - // to prepare. - if ((m_scaleRequestState == ZoomManager::kRequestNewScale - || m_scaleRequestState == ZoomManager::kReceivedNewScale) - && m_glWebViewState->futureViewport() != viewportTileBounds) - m_prepareNextTiledPage = true; - - // Checking if we are zooming... - if (m_scaleRequestState != ZoomManager::kNoScaleRequest) { - m_prepareNextTiledPage = true; - m_zooming = true; - } - - // Get the current scale; if we are zooming, we don't change the scale - // factor immediately (see BaseLayerAndroid::drawBasePictureInGL()), but - // we change the scaleRequestState. When the state is kReceivedNewScale - // (see setReceivedRequest()), we can use the future scale instead of - // the current scale to request new textures. After a transition time, - // the scaleRequestState will be reset and the current scale will be set - // to the future scale. - m_layersScale = m_currentScale; -} - -void ZoomManager::processTransition(double currentTime, float scale, - bool* doSwap, float* backPageTransparency, - float* frontPageTransparency) -{ - if (scale < m_currentScale) - *backPageTransparency = 1 - zoomOutTransparency(currentTime); - else - *frontPageTransparency = zoomInTransparency(currentTime); - - // The transition between the two page is finished - if (currentTime > transitionTime(currentTime, scale)) { - resetTransitionTime(); - *doSwap = true; - } -} - -} // namespace WebCore - -#endif // USE(ACCELERATED_COMPOSITING) |