| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * Copyright (C) 2011,2014 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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 APPLE INC. AND ITS CONTRIBUTORS ``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 APPLE INC. OR ITS 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 "BackingStore.h" |
| |
| #include "ShareableBitmap.h" |
| #include "UpdateInfo.h" |
| #include "WebPageProxy.h" |
| #include <WebCore/BackingStoreBackendCairoImpl.h> |
| #include <WebCore/CairoUtilities.h> |
| #include <WebCore/GraphicsContextImplCairo.h> |
| #include <WebCore/PlatformContextCairo.h> |
| #include <WebCore/RefPtrCairo.h> |
| #include <cairo.h> |
| |
| #if PLATFORM(GTK) && PLATFORM(X11) && defined(GDK_WINDOWING_X11) && !USE(GTK4) |
| #include <WebCore/BackingStoreBackendCairoX11.h> |
| #include <WebCore/PlatformDisplayX11.h> |
| #include <gdk/gdkx.h> |
| #endif |
| |
| namespace WebKit { |
| using namespace WebCore; |
| |
| std::unique_ptr<BackingStoreBackendCairo> BackingStore::createBackend() |
| { |
| #if PLATFORM(GTK) && PLATFORM(X11) && defined(GDK_WINDOWING_X11) && !USE(GTK4) |
| const auto& sharedDisplay = PlatformDisplay::sharedDisplay(); |
| if (is<PlatformDisplayX11>(sharedDisplay)) { |
| GdkVisual* visual = gtk_widget_get_visual(m_webPageProxy.viewWidget()); |
| GdkScreen* screen = gdk_visual_get_screen(visual); |
| ASSERT(downcast<PlatformDisplayX11>(sharedDisplay).native() == GDK_SCREEN_XDISPLAY(screen)); |
| return makeUnique<BackingStoreBackendCairoX11>(GDK_WINDOW_XID(gdk_screen_get_root_window(screen)), |
| GDK_VISUAL_XVISUAL(visual), gdk_visual_get_depth(visual), m_size, m_deviceScaleFactor); |
| } |
| #endif |
| |
| return makeUnique<BackingStoreBackendCairoImpl>(m_size, m_deviceScaleFactor); |
| } |
| |
| void BackingStore::paint(cairo_t* context, const IntRect& rect) |
| { |
| ASSERT(m_backend); |
| |
| cairo_save(context); |
| cairo_set_operator(context, CAIRO_OPERATOR_SOURCE); |
| cairo_set_source_surface(context, m_backend->surface(), 0, 0); |
| cairo_rectangle(context, rect.x(), rect.y(), rect.width(), rect.height()); |
| cairo_fill(context); |
| cairo_restore(context); |
| } |
| |
| void BackingStore::incorporateUpdate(ShareableBitmap* bitmap, const UpdateInfo& updateInfo) |
| { |
| if (!m_backend) |
| m_backend = createBackend(); |
| |
| scroll(updateInfo.scrollRect, updateInfo.scrollOffset); |
| |
| // Paint all update rects. |
| IntPoint updateRectLocation = updateInfo.updateRectBounds.location(); |
| RefPtr<cairo_t> cairoContext = adoptRef(cairo_create(m_backend->surface())); |
| GraphicsContext graphicsContext(GraphicsContextImplCairo::createFactory(cairoContext.get())); |
| |
| // When m_webPageProxy.drawsBackground() is false, bitmap contains transparent parts as a background of the webpage. |
| // For such case, bitmap must be drawn using CompositeOperator::Copy to overwrite the existing surface. |
| graphicsContext.setCompositeOperation(WebCore::CompositeOperator::Copy); |
| |
| for (const auto& updateRect : updateInfo.updateRects) { |
| IntRect srcRect = updateRect; |
| srcRect.move(-updateRectLocation.x(), -updateRectLocation.y()); |
| bitmap->paint(graphicsContext, deviceScaleFactor(), updateRect.location(), srcRect); |
| } |
| } |
| |
| void BackingStore::scroll(const IntRect& scrollRect, const IntSize& scrollOffset) |
| { |
| if (scrollOffset.isZero()) |
| return; |
| |
| ASSERT(m_backend); |
| m_backend->scroll(scrollRect, scrollOffset); |
| } |
| |
| } // namespace WebKit |