| /* |
| * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved. |
| * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com |
| * Copyright (C) 2007 Holger Hans Peter Freyther |
| * Copyright (C) 2008 Collabora Ltd. |
| * |
| * All rights reserved. |
| * |
| * 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 COMPUTER, INC. ``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 COMPUTER, INC. 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 "ScrollView.h" |
| |
| #include "FloatRect.h" |
| #include "FocusController.h" |
| #include "Frame.h" |
| #include "FrameView.h" |
| #include "GraphicsContext.h" |
| #include "IntRect.h" |
| #include "NotImplemented.h" |
| #include "PlatformMouseEvent.h" |
| #include "PlatformWheelEvent.h" |
| #include "Page.h" |
| #include "RenderLayer.h" |
| #include "ScrollbarGtk.h" |
| #include "ScrollbarTheme.h" |
| |
| #include <gtk/gtk.h> |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| class ScrollViewScrollbar : public ScrollbarGtk { |
| public: |
| static PassRefPtr<ScrollViewScrollbar> create(ScrollbarClient* client, ScrollbarOrientation orientation, ScrollbarControlSize size) |
| { |
| return adoptRef(new ScrollViewScrollbar(client, orientation, size)); |
| } |
| |
| private: |
| ScrollViewScrollbar(ScrollbarClient*, ScrollbarOrientation, ScrollbarControlSize); |
| |
| virtual void geometryChanged() const; |
| }; |
| |
| class ScrollView::ScrollViewPrivate : public ScrollbarClient |
| { |
| public: |
| ScrollViewPrivate(ScrollView* _view) |
| : view(_view) |
| , scrollbarsSuppressed(false) |
| , inUpdateScrollbars(false) |
| , horizontalAdjustment(0) |
| , verticalAdjustment(0) |
| {} |
| |
| ~ScrollViewPrivate() |
| { |
| setHasHorizontalScrollbar(false); |
| setHasVerticalScrollbar(false); |
| |
| if (horizontalAdjustment) { |
| g_signal_handlers_disconnect_by_func(G_OBJECT(horizontalAdjustment), (gpointer)ScrollViewPrivate::adjustmentChanged, this); |
| g_object_unref(horizontalAdjustment); |
| } |
| |
| if (verticalAdjustment) { |
| g_signal_handlers_disconnect_by_func(G_OBJECT(verticalAdjustment), (gpointer)ScrollViewPrivate::adjustmentChanged, this); |
| g_object_unref(verticalAdjustment); |
| } |
| } |
| |
| void scrollBackingStore(const IntSize& scrollDelta); |
| |
| void setHasHorizontalScrollbar(bool hasBar); |
| void setHasVerticalScrollbar(bool hasBar); |
| |
| virtual void valueChanged(Scrollbar*); |
| virtual IntRect windowClipRect() const; |
| virtual bool isActive() const; |
| |
| static void adjustmentChanged(GtkAdjustment*, gpointer); |
| |
| ScrollView* view; |
| bool scrollbarsSuppressed; |
| IntSize viewPortSize; |
| bool inUpdateScrollbars; |
| HashSet<Widget*> children; |
| GtkAdjustment* horizontalAdjustment; |
| GtkAdjustment* verticalAdjustment; |
| }; |
| |
| ScrollViewScrollbar::ScrollViewScrollbar(ScrollbarClient* client, ScrollbarOrientation orientation, ScrollbarControlSize size) |
| : ScrollbarGtk(client, orientation, size) |
| { |
| } |
| |
| void ScrollViewScrollbar::geometryChanged() const |
| { |
| if (!parent()) |
| return; |
| |
| ASSERT(parent()->isFrameView()); |
| |
| FrameView* frameView = static_cast<FrameView*>(parent()); |
| IntPoint loc = frameView->convertToContainingWindow(frameGeometry().location()); |
| |
| // Don't allow the allocation size to be negative |
| IntSize sz = frameGeometry().size(); |
| sz.clampNegativeToZero(); |
| |
| GtkAllocation allocation = { loc.x(), loc.y(), sz.width(), sz.height() }; |
| gtk_widget_size_allocate(platformWidget(), &allocation); |
| } |
| |
| void ScrollView::ScrollViewPrivate::setHasHorizontalScrollbar(bool hasBar) |
| { |
| if (hasBar && !view->m_horizontalScrollbar && !horizontalAdjustment) { |
| view->m_horizontalScrollbar = ScrollViewScrollbar::create(this, HorizontalScrollbar, RegularScrollbar); |
| view->addChild(view->m_horizontalScrollbar.get()); |
| } else if (!hasBar && view->m_horizontalScrollbar) { |
| view->removeChild(view->m_horizontalScrollbar.get()); |
| view->m_horizontalScrollbar = 0; |
| } |
| } |
| |
| void ScrollView::ScrollViewPrivate::setHasVerticalScrollbar(bool hasBar) |
| { |
| if (hasBar && !view->m_verticalScrollbar && !verticalAdjustment) { |
| view->m_verticalScrollbar = ScrollViewScrollbar::create(this, VerticalScrollbar, RegularScrollbar); |
| view->addChild(view->m_verticalScrollbar.get()); |
| } else if (!hasBar && view->m_verticalScrollbar) { |
| view->removeChild(view->m_verticalScrollbar.get()); |
| view->m_verticalScrollbar = 0; |
| } |
| } |
| |
| void ScrollView::ScrollViewPrivate::scrollBackingStore(const IntSize& scrollDelta) |
| { |
| // Since scrolling is double buffered, we will be blitting the scroll view's intersection |
| // with the clip rect every time to keep it smooth. |
| IntRect clipRect = view->windowClipRect(); |
| IntRect scrollViewRect = view->convertToContainingWindow(IntRect(0, 0, view->visibleWidth(), view->visibleHeight())); |
| |
| IntRect updateRect = clipRect; |
| updateRect.intersect(scrollViewRect); |
| |
| //FIXME update here? |
| |
| if (view->canBlitOnScroll()) // The main frame can just blit the WebView window |
| // FIXME: Find a way to blit subframes without blitting overlapping content |
| view->scrollBackingStore(-scrollDelta.width(), -scrollDelta.height(), scrollViewRect, clipRect); |
| else { |
| // We need to go ahead and repaint the entire backing store. Do it now before moving the |
| // plugins. |
| view->addToDirtyRegion(updateRect); |
| view->updateBackingStore(); |
| } |
| |
| view->geometryChanged(); |
| |
| // Now update the window (which should do nothing but a blit of the backing store's updateRect and so should |
| // be very fast). |
| view->update(); |
| } |
| |
| void ScrollView::ScrollViewPrivate::adjustmentChanged(GtkAdjustment* adjustment, gpointer _that) |
| { |
| ScrollViewPrivate* that = reinterpret_cast<ScrollViewPrivate*>(_that); |
| |
| // Figure out if we really moved. |
| IntSize newOffset = that->view->m_scrollOffset; |
| if (adjustment == that->horizontalAdjustment) |
| newOffset.setWidth(static_cast<int>(gtk_adjustment_get_value(adjustment))); |
| else if (adjustment == that->verticalAdjustment) |
| newOffset.setHeight(static_cast<int>(gtk_adjustment_get_value(adjustment))); |
| |
| IntSize scrollDelta = newOffset - that->view->m_scrollOffset; |
| if (scrollDelta == IntSize()) |
| return; |
| that->view->m_scrollOffset = newOffset; |
| |
| if (that->scrollbarsSuppressed) |
| return; |
| |
| that->scrollBackingStore(scrollDelta); |
| static_cast<FrameView*>(that->view)->frame()->sendScrollEvent(); |
| } |
| |
| void ScrollView::ScrollViewPrivate::valueChanged(Scrollbar* bar) |
| { |
| // Figure out if we really moved. |
| IntSize newOffset = view->m_scrollOffset; |
| if (bar) { |
| if (bar == view->m_horizontalScrollbar) |
| newOffset.setWidth(bar->value()); |
| else if (bar == view->m_verticalScrollbar) |
| newOffset.setHeight(bar->value()); |
| } |
| IntSize scrollDelta = newOffset - view->m_scrollOffset; |
| if (scrollDelta == IntSize()) |
| return; |
| view->m_scrollOffset = newOffset; |
| |
| if (scrollbarsSuppressed) |
| return; |
| |
| scrollBackingStore(scrollDelta); |
| static_cast<FrameView*>(view)->frame()->sendScrollEvent(); |
| } |
| |
| IntRect ScrollView::ScrollViewPrivate::windowClipRect() const |
| { |
| return static_cast<const FrameView*>(view)->windowClipRect(false); |
| } |
| |
| bool ScrollView::ScrollViewPrivate::isActive() const |
| { |
| Page* page = static_cast<const FrameView*>(view)->frame()->page(); |
| return page && page->focusController()->isActive(); |
| } |
| |
| ScrollView::ScrollView() |
| : m_data(new ScrollViewPrivate(this)) |
| { |
| init(); |
| } |
| |
| ScrollView::~ScrollView() |
| { |
| delete m_data; |
| } |
| |
| /* |
| * The following is assumed: |
| * (hadj && vadj) || (!hadj && !vadj) |
| */ |
| void ScrollView::setGtkAdjustments(GtkAdjustment* hadj, GtkAdjustment* vadj) |
| { |
| ASSERT(!hadj == !vadj); |
| |
| if (m_data->horizontalAdjustment) { |
| g_signal_handlers_disconnect_by_func(G_OBJECT(m_data->horizontalAdjustment), (gpointer)ScrollViewPrivate::adjustmentChanged, m_data); |
| g_signal_handlers_disconnect_by_func(G_OBJECT(m_data->verticalAdjustment), (gpointer)ScrollViewPrivate::adjustmentChanged, m_data); |
| g_object_unref(m_data->horizontalAdjustment); |
| g_object_unref(m_data->verticalAdjustment); |
| } |
| |
| m_data->horizontalAdjustment = hadj; |
| m_data->verticalAdjustment = vadj; |
| |
| if (m_data->horizontalAdjustment) { |
| g_signal_connect(m_data->horizontalAdjustment, "value-changed", G_CALLBACK(ScrollViewPrivate::adjustmentChanged), m_data); |
| g_signal_connect(m_data->verticalAdjustment, "value-changed", G_CALLBACK(ScrollViewPrivate::adjustmentChanged), m_data); |
| |
| /* |
| * disable the scrollbars (if we have any) as the GtkAdjustment over |
| */ |
| m_data->setHasVerticalScrollbar(false); |
| m_data->setHasHorizontalScrollbar(false); |
| |
| g_object_ref(m_data->horizontalAdjustment); |
| g_object_ref(m_data->verticalAdjustment); |
| } |
| |
| updateScrollbars(m_scrollOffset); |
| } |
| |
| void ScrollView::updateContents(const IntRect& updateRect, bool now) |
| { |
| if (updateRect.isEmpty()) |
| return; |
| |
| IntPoint windowPoint = contentsToWindow(updateRect.location()); |
| IntRect containingWindowRect = updateRect; |
| containingWindowRect.setLocation(windowPoint); |
| |
| GdkRectangle rect = containingWindowRect; |
| GdkWindow* window = GTK_WIDGET(containingWindow())->window; |
| |
| if (window) |
| gdk_window_invalidate_rect(window, &rect, true); |
| |
| // Cache the dirty spot. |
| addToDirtyRegion(containingWindowRect); |
| |
| if (now && window) |
| gdk_window_process_updates(window, true); |
| } |
| |
| void ScrollView::update() |
| { |
| ASSERT(containingWindow()); |
| |
| if (!containingWindow() || !GTK_WIDGET_REALIZED(containingWindow())) |
| return; |
| |
| GdkRectangle rect = frameGeometry(); |
| gdk_window_invalidate_rect(GTK_WIDGET(containingWindow())->window, &rect, true); |
| } |
| |
| void ScrollView::setScrollPosition(const IntPoint& scrollPoint) |
| { |
| IntPoint newScrollPosition = scrollPoint.shrunkTo(maximumScrollPosition()); |
| newScrollPosition.clampNegativeToZero(); |
| |
| if (newScrollPosition == scrollPosition()) |
| return; |
| |
| updateScrollbars(IntSize(newScrollPosition.x(), newScrollPosition.y())); |
| } |
| |
| void ScrollView::suppressScrollbars(bool suppressed, bool repaintOnSuppress) |
| { |
| m_data->scrollbarsSuppressed = suppressed; |
| if (repaintOnSuppress) |
| updateScrollbars(m_scrollOffset); |
| } |
| |
| void ScrollView::setFrameGeometry(const IntRect& newGeometry) |
| { |
| ASSERT(isFrameView()); |
| IntRect oldGeometry = frameGeometry(); |
| Widget::setFrameGeometry(newGeometry); |
| |
| if (newGeometry == oldGeometry) |
| return; |
| if (newGeometry.width() != oldGeometry.width() || newGeometry.height() != oldGeometry.height()) { |
| updateScrollbars(m_scrollOffset); |
| static_cast<FrameView*>(this)->setNeedsLayout(); |
| } |
| |
| geometryChanged(); |
| } |
| |
| void ScrollView::platformAddChild(Widget* child) |
| { |
| if (!GTK_IS_SOCKET(child->platformWidget())) |
| gtk_container_add(GTK_CONTAINER(containingWindow()), child->platformWidget()); |
| } |
| |
| void ScrollView::platformRemoveChild(Widget* child) |
| { |
| if (GTK_WIDGET(containingWindow()) == GTK_WIDGET(child->platformWidget())->parent) |
| gtk_container_remove(GTK_CONTAINER(containingWindow()), child->platformWidget()); |
| } |
| |
| bool ScrollView::isOffscreen() const |
| { |
| return false; |
| } |
| |
| void ScrollView::wheelEvent(PlatformWheelEvent& e) |
| { |
| // Determine how much we want to scroll. If we can move at all, we will accept the event. |
| IntSize maxScrollDelta = maximumScrollPosition() - scrollPosition(); |
| if ((e.deltaX() < 0 && maxScrollDelta.width() > 0) || |
| (e.deltaX() > 0 && scrollOffset().width() > 0) || |
| (e.deltaY() < 0 && maxScrollDelta.height() > 0) || |
| (e.deltaY() > 0 && scrollOffset().height() > 0)) |
| e.accept(); |
| |
| scrollBy(IntSize(-e.deltaX() * LINE_STEP, -e.deltaY() * LINE_STEP)); |
| } |
| |
| void ScrollView::updateScrollbars(const IntSize& desiredOffset) |
| { |
| // Don't allow re-entrancy into this function. |
| if (m_data->inUpdateScrollbars) |
| return; |
| |
| // FIXME: This code is here so we don't have to fork FrameView.h/.cpp. |
| // In the end, FrameView should just merge with ScrollView. |
| if (static_cast<const FrameView*>(this)->frame()->prohibitsScrolling()) |
| return; |
| |
| m_data->inUpdateScrollbars = true; |
| |
| bool hasVerticalScrollbar = m_verticalScrollbar; |
| bool hasHorizontalScrollbar = m_horizontalScrollbar; |
| bool oldHasVertical = hasVerticalScrollbar; |
| bool oldHasHorizontal = hasHorizontalScrollbar; |
| ScrollbarMode hScroll = m_horizontalScrollbarMode; |
| ScrollbarMode vScroll = m_verticalScrollbarMode; |
| |
| const int scrollbarThickness = ScrollbarTheme::nativeTheme()->scrollbarThickness(); |
| |
| for (int pass = 0; pass < 2; pass++) { |
| bool scrollsVertically; |
| bool scrollsHorizontally; |
| |
| if (!m_data->scrollbarsSuppressed && (hScroll == ScrollbarAuto || vScroll == ScrollbarAuto)) { |
| // Do a layout if pending before checking if scrollbars are needed. |
| if (hasVerticalScrollbar != oldHasVertical || hasHorizontalScrollbar != oldHasHorizontal) |
| static_cast<FrameView*>(this)->layout(); |
| |
| scrollsVertically = (vScroll == ScrollbarAlwaysOn) || (vScroll == ScrollbarAuto && contentsHeight() > height()); |
| if (scrollsVertically) |
| scrollsHorizontally = (hScroll == ScrollbarAlwaysOn) || (hScroll == ScrollbarAuto && contentsWidth() + scrollbarThickness > width()); |
| else { |
| scrollsHorizontally = (hScroll == ScrollbarAlwaysOn) || (hScroll == ScrollbarAuto && contentsWidth() > width()); |
| if (scrollsHorizontally) |
| scrollsVertically = (vScroll == ScrollbarAlwaysOn) || (vScroll == ScrollbarAuto && contentsHeight() + scrollbarThickness > height()); |
| } |
| } |
| else { |
| scrollsHorizontally = (hScroll == ScrollbarAuto) ? hasHorizontalScrollbar : (hScroll == ScrollbarAlwaysOn); |
| scrollsVertically = (vScroll == ScrollbarAuto) ? hasVerticalScrollbar : (vScroll == ScrollbarAlwaysOn); |
| } |
| |
| if (hasVerticalScrollbar != scrollsVertically) { |
| m_data->setHasVerticalScrollbar(scrollsVertically); |
| hasVerticalScrollbar = scrollsVertically; |
| } |
| |
| if (hasHorizontalScrollbar != scrollsHorizontally) { |
| m_data->setHasHorizontalScrollbar(scrollsHorizontally); |
| hasHorizontalScrollbar = scrollsHorizontally; |
| } |
| } |
| |
| // Set up the range (and page step/line step). |
| IntSize maxScrollPosition(contentsWidth() - visibleWidth(), contentsHeight() - visibleHeight()); |
| IntSize scroll = desiredOffset.shrunkTo(maxScrollPosition); |
| scroll.clampNegativeToZero(); |
| |
| if (m_data->horizontalAdjustment) { |
| m_data->horizontalAdjustment->page_size = visibleWidth(); |
| m_data->horizontalAdjustment->step_increment = visibleWidth() / 10.0; |
| m_data->horizontalAdjustment->page_increment = visibleWidth() * 0.9; |
| m_data->horizontalAdjustment->lower = 0; |
| m_data->horizontalAdjustment->upper = contentsWidth(); |
| gtk_adjustment_changed(m_data->horizontalAdjustment); |
| |
| if (m_scrollOffset.width() != scroll.width()) { |
| m_data->horizontalAdjustment->value = scroll.width(); |
| gtk_adjustment_value_changed(m_data->horizontalAdjustment); |
| } |
| } else if (m_horizontalScrollbar) { |
| int clientWidth = visibleWidth(); |
| m_horizontalScrollbar->setEnabled(contentsWidth() > clientWidth); |
| int pageStep = (clientWidth - PAGE_KEEP); |
| if (pageStep < 0) pageStep = clientWidth; |
| IntRect oldRect(m_horizontalScrollbar->frameGeometry()); |
| IntRect hBarRect = IntRect(0, |
| height() - m_horizontalScrollbar->height(), |
| width() - (m_verticalScrollbar ? m_verticalScrollbar->width() : 0), |
| m_horizontalScrollbar->height()); |
| m_horizontalScrollbar->setFrameGeometry(hBarRect); |
| if (!m_data->scrollbarsSuppressed && oldRect != m_horizontalScrollbar->frameGeometry()) |
| m_horizontalScrollbar->invalidate(); |
| |
| if (m_data->scrollbarsSuppressed) |
| m_horizontalScrollbar->setSuppressInvalidation(true); |
| m_horizontalScrollbar->setSteps(LINE_STEP, pageStep); |
| m_horizontalScrollbar->setProportion(clientWidth, contentsWidth()); |
| m_horizontalScrollbar->setValue(scroll.width()); |
| if (m_data->scrollbarsSuppressed) |
| m_horizontalScrollbar->setSuppressInvalidation(false); |
| } |
| |
| if (m_data->verticalAdjustment) { |
| m_data->verticalAdjustment->page_size = visibleHeight(); |
| m_data->verticalAdjustment->step_increment = visibleHeight() / 10.0; |
| m_data->verticalAdjustment->page_increment = visibleHeight() * 0.9; |
| m_data->verticalAdjustment->lower = 0; |
| m_data->verticalAdjustment->upper = contentsHeight(); |
| gtk_adjustment_changed(m_data->verticalAdjustment); |
| |
| if (m_scrollOffset.height() != scroll.height()) { |
| m_data->verticalAdjustment->value = scroll.height(); |
| gtk_adjustment_value_changed(m_data->verticalAdjustment); |
| } |
| } else if (m_verticalScrollbar) { |
| int clientHeight = visibleHeight(); |
| m_verticalScrollbar->setEnabled(contentsHeight() > clientHeight); |
| int pageStep = (clientHeight - PAGE_KEEP); |
| if (pageStep < 0) pageStep = clientHeight; |
| IntRect oldRect(m_verticalScrollbar->frameGeometry()); |
| IntRect vBarRect = IntRect(width() - m_verticalScrollbar->width(), |
| 0, |
| m_verticalScrollbar->width(), |
| height() - (m_horizontalScrollbar ? m_horizontalScrollbar->height() : 0)); |
| m_verticalScrollbar->setFrameGeometry(vBarRect); |
| if (!m_data->scrollbarsSuppressed && oldRect != m_verticalScrollbar->frameGeometry()) |
| m_verticalScrollbar->invalidate(); |
| |
| if (m_data->scrollbarsSuppressed) |
| m_verticalScrollbar->setSuppressInvalidation(true); |
| m_verticalScrollbar->setSteps(LINE_STEP, pageStep); |
| m_verticalScrollbar->setProportion(clientHeight, contentsHeight()); |
| m_verticalScrollbar->setValue(scroll.height()); |
| if (m_data->scrollbarsSuppressed) |
| m_verticalScrollbar->setSuppressInvalidation(false); |
| } |
| |
| if (oldHasVertical != (m_verticalScrollbar != 0) || oldHasHorizontal != (m_horizontalScrollbar != 0)) |
| geometryChanged(); |
| |
| // See if our offset has changed in a situation where we might not have scrollbars. |
| // This can happen when editing a body with overflow:hidden and scrolling to reveal selection. |
| // It can also happen when maximizing a window that has scrollbars (but the new maximized result |
| // does not). |
| IntSize scrollDelta = scroll - m_scrollOffset; |
| if (scrollDelta != IntSize()) { |
| m_scrollOffset = scroll; |
| m_data->scrollBackingStore(scrollDelta); |
| } |
| |
| m_data->inUpdateScrollbars = false; |
| } |
| |
| Scrollbar* ScrollView::scrollbarUnderMouse(const PlatformMouseEvent& mouseEvent) |
| { |
| IntPoint viewPoint = convertFromContainingWindow(mouseEvent.pos()); |
| if (m_horizontalScrollbar && m_horizontalScrollbar->frameGeometry().contains(viewPoint)) |
| return m_horizontalScrollbar.get(); |
| if (m_verticalScrollbar && m_verticalScrollbar->frameGeometry().contains(viewPoint)) |
| return m_verticalScrollbar.get(); |
| return 0; |
| } |
| |
| void ScrollView::paint(GraphicsContext* context, const IntRect& rect) |
| { |
| // FIXME: This code is here so we don't have to fork FrameView.h/.cpp. |
| // In the end, FrameView should just merge with ScrollView. |
| ASSERT(isFrameView()); |
| |
| if (context->paintingDisabled()) |
| return; |
| |
| IntRect documentDirtyRect = rect; |
| documentDirtyRect.intersect(frameGeometry()); |
| |
| context->save(); |
| |
| context->translate(x(), y()); |
| documentDirtyRect.move(-x(), -y()); |
| |
| context->translate(-scrollX(), -scrollY()); |
| documentDirtyRect.move(scrollX(), scrollY()); |
| |
| context->clip(enclosingIntRect(visibleContentRect())); |
| static_cast<const FrameView*>(this)->frame()->paint(context, documentDirtyRect); |
| context->restore(); |
| |
| // Now paint the scrollbars. |
| if (!m_data->scrollbarsSuppressed && (m_horizontalScrollbar || m_verticalScrollbar)) { |
| context->save(); |
| IntRect scrollViewDirtyRect = rect; |
| scrollViewDirtyRect.intersect(frameGeometry()); |
| context->translate(x(), y()); |
| scrollViewDirtyRect.move(-x(), -y()); |
| if (m_horizontalScrollbar) |
| m_horizontalScrollbar->paint(context, scrollViewDirtyRect); |
| if (m_verticalScrollbar) |
| m_verticalScrollbar->paint(context, scrollViewDirtyRect); |
| |
| /* |
| * FIXME: TODO: Check if that works with RTL |
| */ |
| // Fill the scroll corner with white. |
| IntRect hCorner; |
| if (m_horizontalScrollbar && width() - m_horizontalScrollbar->width() > 0) { |
| hCorner = IntRect(m_horizontalScrollbar->width(), |
| height() - m_horizontalScrollbar->height(), |
| width() - m_horizontalScrollbar->width(), |
| m_horizontalScrollbar->height()); |
| if (hCorner.intersects(scrollViewDirtyRect)) |
| context->fillRect(hCorner, Color::white); |
| } |
| |
| if (m_verticalScrollbar && height() - m_verticalScrollbar->height() > 0) { |
| IntRect vCorner(width() - m_verticalScrollbar->width(), |
| m_verticalScrollbar->height(), |
| m_verticalScrollbar->width(), |
| height() - m_verticalScrollbar->height()); |
| if (vCorner != hCorner && vCorner.intersects(scrollViewDirtyRect)) |
| context->fillRect(vCorner, Color::white); |
| } |
| |
| context->restore(); |
| } |
| } |
| |
| /* |
| * update children but nor our scrollbars. They should not scroll when |
| * we scroll our content. |
| */ |
| void ScrollView::geometryChanged() const |
| { |
| HashSet<Widget*>::const_iterator end = m_children.end(); |
| for (HashSet<Widget*>::const_iterator current = m_children.begin(); current != end; ++current) |
| (*current)->geometryChanged(); |
| } |
| |
| bool ScrollView::scroll(ScrollDirection direction, ScrollGranularity granularity) |
| { |
| if (direction == ScrollUp || direction == ScrollDown) { |
| if (m_verticalScrollbar) |
| return m_verticalScrollbar->scroll(direction, granularity); |
| } else { |
| if (m_horizontalScrollbar) |
| return m_horizontalScrollbar->scroll(direction, granularity); |
| } |
| return false; |
| } |
| |
| void ScrollView::addToDirtyRegion(const IntRect& containingWindowRect) |
| { |
| ASSERT(isFrameView()); |
| const FrameView* frameView = static_cast<const FrameView*>(this); |
| Page* page = frameView->frame() ? frameView->frame()->page() : 0; |
| if (!page) |
| return; |
| page->chrome()->addToDirtyRegion(containingWindowRect); |
| } |
| |
| void ScrollView::scrollBackingStore(int dx, int dy, const IntRect& scrollViewRect, const IntRect& clipRect) |
| { |
| ASSERT(isFrameView()); |
| const FrameView* frameView = static_cast<const FrameView*>(this); |
| Page* page = frameView->frame() ? frameView->frame()->page() : 0; |
| if (!page) |
| return; |
| page->chrome()->scrollBackingStore(dx, dy, scrollViewRect, clipRect); |
| } |
| |
| void ScrollView::updateBackingStore() |
| { |
| ASSERT(isFrameView()); |
| const FrameView* frameView = static_cast<const FrameView*>(this); |
| Page* page = frameView->frame() ? frameView->frame()->page() : 0; |
| if (!page) |
| return; |
| page->chrome()->updateBackingStore(); |
| } |
| |
| } |
