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Diffstat (limited to 'WebCore/platform/win/PlatformScrollBarWin.cpp')
| -rw-r--r-- | WebCore/platform/win/PlatformScrollBarWin.cpp | 772 |
1 files changed, 0 insertions, 772 deletions
diff --git a/WebCore/platform/win/PlatformScrollBarWin.cpp b/WebCore/platform/win/PlatformScrollBarWin.cpp deleted file mode 100644 index f59f27a..0000000 --- a/WebCore/platform/win/PlatformScrollBarWin.cpp +++ /dev/null @@ -1,772 +0,0 @@ -/* - * Copyright (C) 2007 Apple Inc. All rights reserved. - * Copyright (C) 2008 Brent Fulgham - * - * 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 "PlatformScrollBar.h" - -#include "EventHandler.h" -#include "FrameView.h" -#include "Frame.h" -#include "GraphicsContext.h" -#include "IntRect.h" -#include "PlatformMouseEvent.h" -#include "SoftLinking.h" - -#include <windows.h> -#include "RenderThemeWin.h" - -// Generic state constants -#define TS_NORMAL 1 -#define TS_HOVER 2 -#define TS_ACTIVE 3 -#define TS_DISABLED 4 -#define TS_FOCUSED 5 - -#define ABS_UPNORMAL 1 -#define ABS_DOWNNORMAL 5 -#define ABS_LEFTNORMAL 9 -#define ABS_RIGHTNORMAL 13 - -static const unsigned SP_ABS_HOT_MODIFIER = 1; -static const unsigned SP_ABS_PRESSED_MODIFIER = 2; -static const unsigned SP_ABS_DISABLE_MODIFIER = 3; - -// Scrollbar constants -#define SP_BUTTON 1 -#define SP_THUMBHOR 2 -#define SP_THUMBVERT 3 -#define SP_TRACKSTARTHOR 4 -#define SP_TRACKENDHOR 5 -#define SP_TRACKSTARTVERT 6 -#define SP_TRACKENDVERT 7 -#define SP_GRIPPERHOR 8 -#define SP_GRIPPERVERT 9 - -using namespace std; - -namespace WebCore { - -// FIXME: We should get these numbers from SafariTheme -static int cHorizontalWidth; -static int cHorizontalHeight; -static int cVerticalWidth; -static int cVerticalHeight; -static int cHorizontalButtonWidth; -static int cVerticalButtonHeight; -static int cRealButtonLength = 28; -static int cButtonInset = 14; -static int cButtonHitInset = 3; -// cRealButtonLength - cButtonInset -static int cThumbWidth; -static int cThumbHeight; -static int cThumbMinLength = 26; - -static HANDLE cScrollBarTheme = 0; - -// FIXME: Refactor the soft-linking code so that it can be shared with RenderThemeWin -SOFT_LINK_LIBRARY(uxtheme) -SOFT_LINK(uxtheme, OpenThemeData, HANDLE, WINAPI, (HWND hwnd, LPCWSTR pszClassList), (hwnd, pszClassList)) -SOFT_LINK(uxtheme, CloseThemeData, HRESULT, WINAPI, (HANDLE hTheme), (hTheme)) -SOFT_LINK(uxtheme, DrawThemeBackground, HRESULT, WINAPI, (HANDLE hTheme, HDC hdc, int iPartId, int iStateId, const RECT* pRect, const RECT* pClipRect), (hTheme, hdc, iPartId, iStateId, pRect, pClipRect)) -SOFT_LINK(uxtheme, DrawThemeEdge, HRESULT, WINAPI, (HANDLE hTheme, HDC hdc, int iPartId, int iStateId, const RECT* pRect, unsigned uEdge, unsigned uFlags, const RECT* pClipRect), (hTheme, hdc, iPartId, iStateId, pRect, uEdge, uFlags, pClipRect)) -SOFT_LINK(uxtheme, GetThemeContentRect, HRESULT, WINAPI, (HANDLE hTheme, HDC hdc, int iPartId, int iStateId, const RECT* pRect, const RECT* pContentRect), (hTheme, hdc, iPartId, iStateId, pRect, pContentRect)) -SOFT_LINK(uxtheme, GetThemePartSize, HRESULT, WINAPI, (HANDLE hTheme, HDC hdc, int iPartId, int iStateId, RECT* pRect, int ts, SIZE* psz), (hTheme, hdc, iPartId, iStateId, pRect, ts, psz)) -SOFT_LINK(uxtheme, GetThemeSysFont, HRESULT, WINAPI, (HANDLE hTheme, int iFontId, OUT LOGFONT* pFont), (hTheme, iFontId, pFont)) -SOFT_LINK(uxtheme, GetThemeColor, HRESULT, WINAPI, (HANDLE hTheme, HDC hdc, int iPartId, int iStateId, int iPropId, OUT COLORREF* pColor), (hTheme, hdc, iPartId, iStateId, iPropId, pColor)) - -static void checkAndInitScrollbarTheme() -{ - if (uxthemeLibrary() && !cScrollBarTheme) - cScrollBarTheme = OpenThemeData(0, L"Scrollbar"); -} - -// May need to add stuff to these later, so keep the graphics context retrieval/release in some helpers. -static HDC prepareForDrawing(GraphicsContext* g, const IntRect& r) -{ - return g->getWindowsContext(r); -} - -static void doneDrawing(GraphicsContext* g, HDC hdc, const IntRect& r) -{ - g->releaseWindowsContext(hdc, r); -} -// End Copied from RenderThemeWin - -const double cInitialTimerDelay = 0.25; -const double cNormalTimerDelay = 0.05; - -PlatformScrollbar::PlatformScrollbar(ScrollbarClient* client, ScrollbarOrientation orientation, ScrollbarControlSize size) - : Scrollbar(client, orientation, size) - , m_hoveredPart(NoPart) - , m_pressedPart(NoPart) - , m_pressedPos(0) - , m_scrollTimer(this, &PlatformScrollbar::autoscrollTimerFired) - , m_overlapsResizer(false) -{ - // Obtain the correct scrollbar sizes from the system. - // FIXME: We should update these on a WM_SETTINGSCHANGE, too. - if (!cHorizontalHeight) { - cHorizontalHeight = ::GetSystemMetrics(SM_CYHSCROLL); - cHorizontalWidth = ::GetSystemMetrics(SM_CXHSCROLL); - cVerticalHeight = ::GetSystemMetrics(SM_CYVSCROLL); - cVerticalWidth = ::GetSystemMetrics(SM_CXVSCROLL); - cThumbWidth = ::GetSystemMetrics(SM_CXHTHUMB); - cThumbHeight = ::GetSystemMetrics(SM_CYVTHUMB); - cHorizontalButtonWidth = ::GetSystemMetrics(SM_CYVSCROLL); - cVerticalButtonHeight = ::GetSystemMetrics(SM_CXHSCROLL); - } - - if (orientation == VerticalScrollbar) - setFrameGeometry(IntRect(0, 0, cVerticalWidth, cVerticalHeight)); - else - setFrameGeometry(IntRect(0, 0, cHorizontalWidth, cHorizontalHeight)); -} - -PlatformScrollbar::~PlatformScrollbar() -{ - stopTimerIfNeeded(); -} - -void PlatformScrollbar::updateThumbPosition() -{ - invalidateTrack(); -} - -void PlatformScrollbar::updateThumbProportion() -{ - invalidateTrack(); -} - -static IntRect trackRepaintRect(const IntRect& trackRect, ScrollbarOrientation orientation, ScrollbarControlSize controlSize) -{ - const int cButtonLength = (orientation == VerticalScrollbar) ? cVerticalButtonHeight : cHorizontalButtonWidth; - - IntRect paintRect(trackRect); - if (orientation == HorizontalScrollbar) - paintRect.inflateX(cButtonLength); - else - paintRect.inflateY(cButtonLength); - - return paintRect; -} - -static IntRect buttonRepaintRect(const IntRect& buttonRect, ScrollbarOrientation orientation, ScrollbarControlSize controlSize, bool start) -{ - IntRect paintRect(buttonRect); - if (orientation == HorizontalScrollbar) { - paintRect.setWidth(cRealButtonLength); - if (!start) - paintRect.setX(buttonRect.x() - (cRealButtonLength - buttonRect.width())); - } else { - paintRect.setHeight(cRealButtonLength); - if (!start) - paintRect.setY(buttonRect.y() - (cRealButtonLength - buttonRect.height())); - } - - return paintRect; -} - -void PlatformScrollbar::invalidateTrack() -{ - IntRect rect = trackRepaintRect(trackRect(), m_orientation, controlSize()); - rect.move(-x(), -y()); - invalidateRect(rect); -} - -void PlatformScrollbar::invalidatePart(ScrollbarPart part) -{ - if (part == NoPart) - return; - - IntRect result; - switch (part) { - case BackButtonPart: - result = buttonRepaintRect(backButtonRect(), m_orientation, controlSize(), true); - break; - case ForwardButtonPart: - result = buttonRepaintRect(forwardButtonRect(), m_orientation, controlSize(), false); - break; - default: { - IntRect beforeThumbRect, thumbRect, afterThumbRect; - splitTrack(trackRect(), beforeThumbRect, thumbRect, afterThumbRect); - if (part == BackTrackPart) - result = beforeThumbRect; - else if (part == ForwardTrackPart) - result = afterThumbRect; - else - result = thumbRect; - } - } - result.move(-x(), -y()); - invalidateRect(result); -} - -int PlatformScrollbar::width() const -{ - return Widget::width(); -} - -int PlatformScrollbar::height() const -{ - return Widget::height(); -} - -void PlatformScrollbar::setRect(const IntRect& rect) -{ - // Get our window resizer rect and see if we overlap. Adjust to avoid the overlap - // if necessary. - IntRect adjustedRect(rect); - if (parent() && parent()->isFrameView()) { - bool overlapsResizer = false; - FrameView* view = static_cast<FrameView*>(parent()); - IntRect resizerRect = view->windowResizerRect(); - resizerRect.setLocation(view->convertFromContainingWindow(resizerRect.location())); - if (rect.intersects(resizerRect)) { - if (orientation() == HorizontalScrollbar) { - int overlap = rect.right() - resizerRect.x(); - if (overlap > 0 && resizerRect.right() >= rect.right()) { - adjustedRect.setWidth(rect.width() - overlap); - overlapsResizer = true; - } - } else { - int overlap = rect.bottom() - resizerRect.y(); - if (overlap > 0 && resizerRect.bottom() >= rect.bottom()) { - adjustedRect.setHeight(rect.height() - overlap); - overlapsResizer = true; - } - } - } - - if (overlapsResizer != m_overlapsResizer) { - m_overlapsResizer = overlapsResizer; - view->adjustOverlappingScrollbarCount(m_overlapsResizer ? 1 : -1); - } - } - - setFrameGeometry(adjustedRect); -} - -void PlatformScrollbar::setParent(ScrollView* parentView) -{ - if (!parentView && m_overlapsResizer && parent() && parent()->isFrameView()) - static_cast<FrameView*>(parent())->adjustOverlappingScrollbarCount(-1); - Widget::setParent(parentView); -} - -void PlatformScrollbar::setEnabled(bool enabled) -{ - if (enabled != isEnabled()) { - Widget::setEnabled(enabled); - invalidate(); - } -} - -void PlatformScrollbar::paint(GraphicsContext* graphicsContext, const IntRect& damageRect) -{ - if (graphicsContext->updatingControlTints()) { - invalidate(); - return; - } - - if (graphicsContext->paintingDisabled()) - return; - - // Don't paint anything if the scrollbar doesn't intersect the damage rect. - if (!frameGeometry().intersects(damageRect)) - return; - - IntRect track = trackRect(); - paintTrack(graphicsContext, track, true, damageRect); - - if (hasButtons()) { - paintButton(graphicsContext, backButtonRect(), true, damageRect); - paintButton(graphicsContext, forwardButtonRect(), false, damageRect); - } - - if (hasThumb() && damageRect.intersects(track)) { - IntRect startTrackRect, thumbRect, endTrackRect; - splitTrack(track, startTrackRect, thumbRect, endTrackRect); - paintThumb(graphicsContext, thumbRect, damageRect); - } -} - -bool PlatformScrollbar::hasButtons() const -{ - return isEnabled() && (m_orientation == HorizontalScrollbar ? width() : height()) >= 2 * (cRealButtonLength - cButtonHitInset); -} - -bool PlatformScrollbar::hasThumb() const -{ - return isEnabled() && (m_orientation == HorizontalScrollbar ? width() : height()) >= 2 * cButtonInset + cThumbMinLength + 1; -} - -IntRect PlatformScrollbar::backButtonRect() const -{ - // Our actual rect will shrink to half the available space when - // we have < 34 pixels left. This allows the scrollbar - // to scale down and function even at tiny sizes. - if (m_orientation == HorizontalScrollbar) - return IntRect(x(), y(), cHorizontalButtonWidth, cHorizontalHeight); - return IntRect(x(), y(), cVerticalWidth, cVerticalButtonHeight); -} - -IntRect PlatformScrollbar::forwardButtonRect() const -{ - // Our desired rect is essentially 17x17. - - // Our actual rect will shrink to half the available space when - // we have < 34 pixels left. This allows the scrollbar - // to scale down and function even at tiny sizes. - if (m_orientation == HorizontalScrollbar) - return IntRect(x() + width() - cHorizontalButtonWidth, y(), cHorizontalButtonWidth, cHorizontalHeight); - return IntRect(x(), y() + height() - cVerticalButtonHeight, cVerticalWidth, cVerticalButtonHeight); -} - -IntRect PlatformScrollbar::trackRect() const -{ - if (m_orientation == HorizontalScrollbar) { - if (!hasButtons()) - return IntRect(x(), y(), width(), cHorizontalHeight); - return IntRect(x() + cHorizontalButtonWidth, y(), width() - 2 * cHorizontalButtonWidth, cHorizontalHeight); - } - - if (!hasButtons()) - return IntRect(x(), y(), cVerticalWidth, height()); - return IntRect(x(), y() + cVerticalButtonHeight, cVerticalWidth, height() - 2 * cVerticalButtonHeight); -} - -IntRect PlatformScrollbar::thumbRect() const -{ - IntRect beforeThumbRect, thumbRect, afterThumbRect; - splitTrack(trackRect(), beforeThumbRect, thumbRect, afterThumbRect); - return thumbRect; -} - -IntRect PlatformScrollbar::gripperRect(const IntRect& thumbRect) const -{ - return IntRect(); -} - -void PlatformScrollbar::splitTrack(const IntRect& trackRect, IntRect& beforeThumbRect, IntRect& thumbRect, IntRect& afterThumbRect) const -{ - // This function won't even get called unless we're big enough to have some combination of these three rects where at least - // one of them is non-empty. - int thumbPos = thumbPosition(); - if (m_orientation == HorizontalScrollbar) { - thumbRect = IntRect(trackRect.x() + thumbPos, trackRect.y() + (trackRect.height() - cThumbHeight) / 2, thumbLength(), cThumbHeight); - beforeThumbRect = IntRect(trackRect.x(), trackRect.y(), thumbPos, trackRect.height()); - afterThumbRect = IntRect(thumbRect.x() + thumbRect.width(), trackRect.y(), trackRect.right() - thumbRect.right(), trackRect.height()); - } else { - thumbRect = IntRect(trackRect.x() + (trackRect.width() - cThumbWidth) / 2, trackRect.y() + thumbPos, cThumbWidth, thumbLength()); - beforeThumbRect = IntRect(trackRect.x(), trackRect.y(), trackRect.width(), thumbPos); - afterThumbRect = IntRect(trackRect.x(), thumbRect.y() + thumbRect.height(), trackRect.width(), trackRect.bottom() - thumbRect.bottom()); - } -} - -int PlatformScrollbar::thumbPosition() const -{ - if (isEnabled()) - return (float)m_currentPos * (trackLength() - thumbLength()) / (m_totalSize - m_visibleSize); - return 0; -} - -int PlatformScrollbar::thumbLength() const -{ - if (!isEnabled()) - return 0; - - float proportion = (float)(m_visibleSize) / m_totalSize; - int trackLen = trackLength(); - int length = proportion * trackLen; - int minLength = cThumbMinLength; - length = max(length, minLength); - if (length > trackLen) - length = 0; // Once the thumb is below the track length, it just goes away (to make more room for the track). - return length; -} - -int PlatformScrollbar::trackLength() const -{ - return (m_orientation == HorizontalScrollbar) ? trackRect().width() : trackRect().height(); -} - -void PlatformScrollbar::paintButton(GraphicsContext* context, const IntRect& rect, bool start, const IntRect& damageRect) const -{ - IntRect paintRect = buttonRepaintRect(rect, m_orientation, controlSize(), start); - - if (!damageRect.intersects(paintRect)) - return; - - unsigned part = 0; - unsigned state = 0; - unsigned classicPart = 0; - unsigned classicState = 0; - - if (m_orientation == HorizontalScrollbar) { - state = start ? ABS_LEFTNORMAL : ABS_RIGHTNORMAL; - classicPart = start ? DFCS_SCROLLLEFT : DFCS_SCROLLRIGHT; - } else { - state = start ? ABS_UPNORMAL : ABS_DOWNNORMAL; - classicPart = start ? DFCS_SCROLLUP : DFCS_SCROLLDOWN; - } - - if (!isEnabled()) { - state += SP_ABS_DISABLE_MODIFIER; - classicState |= DFCS_INACTIVE; - } else if ((m_pressedPart == BackButtonPart && start) - || (m_pressedPart == ForwardButtonPart && !start)) { - state += SP_ABS_PRESSED_MODIFIER; - classicState |= DFCS_PUSHED | DFCS_FLAT; - } else if (m_client->isActive()) { - state += SP_ABS_HOT_MODIFIER; - classicState |= DFCS_HOT; - } - - HDC hdc = prepareForDrawing(context, rect); - RECT widgetRect = rect; - checkAndInitScrollbarTheme(); - - if (cScrollBarTheme) - DrawThemeBackground(cScrollBarTheme, hdc, SP_BUTTON, state, &widgetRect, NULL); - else - DrawFrameControl(hdc, &widgetRect, classicPart, classicState); - - doneDrawing(context, hdc, rect); -} - -void PlatformScrollbar::paintTrack(GraphicsContext* context, const IntRect& rect, bool start, const IntRect& damageRect) const -{ - IntRect paintRect = hasButtons() ? trackRepaintRect(rect, m_orientation, controlSize()) : rect; - - if (!damageRect.intersects(paintRect)) - return; - - unsigned part = 0; - unsigned classicPart = DFC_SCROLL; - if (m_orientation == HorizontalScrollbar) - part = start ? SP_TRACKSTARTHOR : SP_TRACKENDHOR; - else - part = start ? SP_TRACKSTARTVERT : SP_TRACKENDVERT; - - unsigned state = TS_DISABLED; - unsigned classicState = DFCS_MONO; - if (m_client->isActive()) - state |= TS_ACTIVE; - else - classicState |= DFCS_INACTIVE; - - if (hasButtons()) - state |= TS_NORMAL; - - HDC hdc = prepareForDrawing(context, rect); - RECT widgetRect = rect; - checkAndInitScrollbarTheme(); - - if (cScrollBarTheme) - DrawThemeBackground(cScrollBarTheme, hdc, part, state, &widgetRect, NULL); - else - DrawFrameControl(hdc, &widgetRect, DFC_SCROLL, classicState); - - doneDrawing(context, hdc, rect); -} - -void PlatformScrollbar::paintThumb(GraphicsContext* context, const IntRect& rect, const IntRect& damageRect) const -{ - if (!damageRect.intersects(rect)) - return; - - unsigned part = (m_orientation == HorizontalScrollbar) ? SP_THUMBHOR : SP_THUMBVERT; - unsigned state = 0; - - if (!isEnabled()) - state += SP_ABS_DISABLE_MODIFIER; - else if (m_client->isActive()) - state += SP_ABS_HOT_MODIFIER; - - HDC hdc = prepareForDrawing(context, rect); - RECT widgetRect = rect; - checkAndInitScrollbarTheme(); - - if (cScrollBarTheme) { - DrawThemeBackground(cScrollBarTheme, hdc, part, state, &widgetRect, NULL); - paintGripper(hdc, widgetRect); - } else { - HGDIOBJ hSaveBrush = SelectObject(hdc, GetSysColorBrush(COLOR_BTNFACE)); - DrawEdge(hdc, &widgetRect, EDGE_RAISED, BF_RECT); - SelectObject(hdc,hSaveBrush); - } - - doneDrawing(context, hdc, rect); -} - -void PlatformScrollbar::paintGripper(HDC hdc, const IntRect& rect) const -{ - unsigned part = (m_orientation == HorizontalScrollbar) ? SP_GRIPPERHOR : SP_GRIPPERVERT; - unsigned state = 0; - - if (m_client->isActive()) - state |= TS_ACTIVE; - - RECT widgetRect = rect; - checkAndInitScrollbarTheme(); - - if (cScrollBarTheme) - DrawThemeBackground(cScrollBarTheme, hdc, part, state, &widgetRect, NULL); -} - -ScrollbarPart PlatformScrollbar::hitTest(const PlatformMouseEvent& evt) -{ - if (!isEnabled()) - return NoPart; - - IntPoint mousePosition = convertFromContainingWindow(evt.pos()); - mousePosition.move(x(), y()); - - if (hasButtons()) { - if (backButtonRect().contains(mousePosition)) - return BackButtonPart; - - if (forwardButtonRect().contains(mousePosition)) - return ForwardButtonPart; - } - - if (!hasThumb()) - return NoPart; - - IntRect track = trackRect(); - if (track.contains(mousePosition)) { - IntRect beforeThumbRect, thumbRect, afterThumbRect; - splitTrack(track, beforeThumbRect, thumbRect, afterThumbRect); - if (beforeThumbRect.contains(mousePosition)) - return BackTrackPart; - if (thumbRect.contains(mousePosition)) - return ThumbPart; - return ForwardTrackPart; - } - - return NoPart; -} - -bool PlatformScrollbar::handleMouseMoveEvent(const PlatformMouseEvent& evt) -{ - if (m_pressedPart == ThumbPart) { - // Drag the thumb. - int thumbPos = thumbPosition(); - int thumbLen = thumbLength(); - int trackLen = trackLength(); - int maxPos = trackLen - thumbLen; - int delta = 0; - if (m_orientation == HorizontalScrollbar) - delta = convertFromContainingWindow(evt.pos()).x() - m_pressedPos; - else - delta = convertFromContainingWindow(evt.pos()).y() - m_pressedPos; - - if (delta > 0) - // The mouse moved down/right. - delta = min(maxPos - thumbPos, delta); - else if (delta < 0) - // The mouse moved up/left. - delta = max(-thumbPos, delta); - - if (delta != 0) { - setValue((float)(thumbPos + delta) * (m_totalSize - m_visibleSize) / (trackLen - thumbLen)); - m_pressedPos += thumbPosition() - thumbPos; - } - - return true; - } - - if (m_pressedPart != NoPart) - m_pressedPos = (m_orientation == HorizontalScrollbar ? convertFromContainingWindow(evt.pos()).x() : convertFromContainingWindow(evt.pos()).y()); - - ScrollbarPart part = hitTest(evt); - if (part != m_hoveredPart) { - if (m_pressedPart != NoPart) { - if (part == m_pressedPart) { - // The mouse is moving back over the pressed part. We - // need to start up the timer action again. - startTimerIfNeeded(cNormalTimerDelay); - invalidatePart(m_pressedPart); - } else if (m_hoveredPart == m_pressedPart) { - // The mouse is leaving the pressed part. Kill our timer - // if needed. - stopTimerIfNeeded(); - invalidatePart(m_pressedPart); - } - } else { - invalidatePart(part); - invalidatePart(m_hoveredPart); - } - m_hoveredPart = part; - } - - return true; -} - -bool PlatformScrollbar::handleMouseOutEvent(const PlatformMouseEvent& evt) -{ - invalidatePart(m_hoveredPart); - m_hoveredPart = NoPart; - - return true; -} - -bool PlatformScrollbar::handleMousePressEvent(const PlatformMouseEvent& evt) -{ - m_pressedPart = hitTest(evt); - m_pressedPos = (m_orientation == HorizontalScrollbar ? convertFromContainingWindow(evt.pos()).x() : convertFromContainingWindow(evt.pos()).y()); - invalidatePart(m_pressedPart); - autoscrollPressedPart(cInitialTimerDelay); - return true; -} - -bool PlatformScrollbar::handleMouseReleaseEvent(const PlatformMouseEvent& evt) -{ - invalidatePart(m_pressedPart); - m_pressedPart = NoPart; - m_pressedPos = 0; - stopTimerIfNeeded(); - - if (parent() && parent()->isFrameView()) - static_cast<FrameView*>(parent())->frame()->eventHandler()->setMousePressed(false); - - return true; -} - -void PlatformScrollbar::startTimerIfNeeded(double delay) -{ - // Don't do anything for the thumb. - if (m_pressedPart == ThumbPart) - return; - - // Handle the track. We halt track scrolling once the thumb is level - // with us. - if ((m_pressedPart == BackTrackPart || m_pressedPart == ForwardTrackPart) && thumbUnderMouse()) { - invalidatePart(m_pressedPart); - m_hoveredPart = ThumbPart; - return; - } - - // We can't scroll if we've hit the beginning or end. - ScrollDirection dir = pressedPartScrollDirection(); - if (dir == ScrollUp || dir == ScrollLeft) { - if (m_currentPos == 0) - return; - } else { - if (m_currentPos == m_totalSize - m_visibleSize) - return; - } - - m_scrollTimer.startOneShot(delay); -} - -void PlatformScrollbar::stopTimerIfNeeded() -{ - if (m_scrollTimer.isActive()) - m_scrollTimer.stop(); -} - -void PlatformScrollbar::autoscrollPressedPart(double delay) -{ - // Don't do anything for the thumb or if nothing was pressed. - if (m_pressedPart == ThumbPart || m_pressedPart == NoPart) - return; - - // Handle the track. - if ((m_pressedPart == BackTrackPart || m_pressedPart == ForwardTrackPart) && thumbUnderMouse()) { - invalidatePart(m_pressedPart); - m_hoveredPart = ThumbPart; - return; - } - - // Handle the arrows and track. - if (scroll(pressedPartScrollDirection(), pressedPartScrollGranularity())) - startTimerIfNeeded(delay); -} - -void PlatformScrollbar::autoscrollTimerFired(Timer<PlatformScrollbar>*) -{ - autoscrollPressedPart(cNormalTimerDelay); -} - -ScrollDirection PlatformScrollbar::pressedPartScrollDirection() -{ - if (m_orientation == HorizontalScrollbar) { - if (m_pressedPart == BackButtonPart || m_pressedPart == BackTrackPart) - return ScrollLeft; - return ScrollRight; - } else { - if (m_pressedPart == BackButtonPart || m_pressedPart == BackTrackPart) - return ScrollUp; - return ScrollDown; - } -} - -ScrollGranularity PlatformScrollbar::pressedPartScrollGranularity() -{ - if (m_pressedPart == BackButtonPart || m_pressedPart == ForwardButtonPart) - return ScrollByLine; - return ScrollByPage; -} - -bool PlatformScrollbar::thumbUnderMouse() -{ - // Construct a rect. - IntRect thumb = thumbRect(); - thumb.move(-x(), -y()); - int begin = (m_orientation == HorizontalScrollbar) ? thumb.x() : thumb.y(); - int end = (m_orientation == HorizontalScrollbar) ? thumb.right() : thumb.bottom(); - return (begin <= m_pressedPos && m_pressedPos < end); -} - -int PlatformScrollbar::horizontalScrollbarHeight(ScrollbarControlSize controlSize) -{ - return cHorizontalWidth; -} - -int PlatformScrollbar::verticalScrollbarWidth(ScrollbarControlSize controlSize) -{ - return cVerticalHeight; -} - -IntRect PlatformScrollbar::windowClipRect() const -{ - IntRect clipRect(0, 0, width(), height()); - - clipRect = convertToContainingWindow(clipRect); - if (m_client) - clipRect.intersect(m_client->windowClipRect()); - - return clipRect; -} - -void PlatformScrollbar::themeChanged() -{ -} - -} - |