blob: 224a72ab42919ad4f69eb0bf56034002e06ade1e [file] [log] [blame]
/*
* Copyright (C) 2007 Apple Inc. 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 "WebKitDLL.h"
#include "WebKit.h"
#include "WebScrollBar.h"
#include <WebCore/GraphicsContext.h>
#include <WebCore/PlatformMouseEvent.h>
#include <WebCore/Scrollbar.h>
#include <WebCore/ScrollbarTheme.h>
using namespace WebCore;
// WebScrollBar ---------------------------------------------------------------------
WebScrollBar::WebScrollBar()
: m_refCount(0)
, m_containingWindow(0)
, m_currentPosition(0)
{
gClassCount++;
gClassNameCount.add("WebScrollBar");
}
WebScrollBar::~WebScrollBar()
{
gClassCount--;
gClassNameCount.remove("WebScrollBar");
}
WebScrollBar* WebScrollBar::createInstance()
{
WebScrollBar* instance = new WebScrollBar();
instance->AddRef();
return instance;
}
// IUnknown -------------------------------------------------------------------
HRESULT STDMETHODCALLTYPE WebScrollBar::QueryInterface(REFIID riid, void** ppvObject)
{
*ppvObject = 0;
if (IsEqualGUID(riid, IID_IUnknown))
*ppvObject = static_cast<IUnknown*>(this);
else if (IsEqualGUID(riid, IID_IWebScrollBarPrivate))
*ppvObject = static_cast<IWebScrollBarPrivate*>(this);
else
return E_NOINTERFACE;
AddRef();
return S_OK;
}
ULONG STDMETHODCALLTYPE WebScrollBar::AddRef(void)
{
return ++m_refCount;
}
ULONG STDMETHODCALLTYPE WebScrollBar::Release(void)
{
ULONG newRef = --m_refCount;
if (!newRef)
delete(this);
return newRef;
}
// IWebScrollBarPrivate ------------------------------------------------------------------
HRESULT STDMETHODCALLTYPE WebScrollBar::init(
/* [in] */ IWebScrollBarDelegatePrivate* delegate,
/* [in] */ OLE_HANDLE containingWindow,
/* [in] */ WebScrollBarOrientation orientation,
/* [in] */ WebScrollBarControlSize controlSize)
{
if (!delegate || !containingWindow)
return E_FAIL;
ScrollbarOrientation webCoreOrientation = (ScrollbarOrientation) orientation;
ScrollbarControlSize webCoreControlSize = (ScrollbarControlSize) controlSize;
m_delegate = delegate;
m_scrollBar = Scrollbar::createNativeScrollbar(this, webCoreOrientation, webCoreControlSize);
if (!m_scrollBar)
return E_FAIL;
m_containingWindow = (HWND)(ULONG64)containingWindow;
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::setEnabled(
/* [in] */ BOOL enabled)
{
m_scrollBar->setEnabled(!!enabled);
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::setSteps(
/* [in] */ int lineStep,
/* [in] */ int pageStep)
{
m_scrollBar->setSteps(lineStep, pageStep);
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::setProportion(
/* [in] */ int visibleSize,
/* [in] */ int totalSize)
{
m_scrollBar->setProportion(visibleSize, totalSize);
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::setRect(
/* [in] */ RECT bounds)
{
IntRect rect(bounds.left, bounds.top, bounds.right-bounds.left, bounds.bottom-bounds.top);
m_scrollBar->setFrameRect(rect);
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::setValue(
/* [in] */ int value)
{
m_currentPosition = value;
ScrollableArea::scrollToOffsetWithoutAnimation(m_scrollBar->orientation(), m_currentPosition);
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::value(
/* [retval][out] */ int* value)
{
if (!value)
return E_POINTER;
*value = m_currentPosition;
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::paint(
/* [in] */ HDC dc,
/* [in] */ RECT damageRect)
{
GraphicsContext context(dc);
IntRect rect(damageRect.left, damageRect.top, damageRect.right-damageRect.left, damageRect.bottom-damageRect.top);
m_scrollBar->paint(&context, rect);
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::frameRect(
/* [retval][out] */ RECT* bounds)
{
if (!bounds)
return E_POINTER;
IntRect rect = m_scrollBar->frameRect();
bounds->left = rect.x();
bounds->right = rect.maxX();
bounds->top = rect.y();
bounds->bottom = rect.maxY();
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::width(
/* [retval][out] */ int* w)
{
if (!w)
return E_POINTER;
*w = m_scrollBar->width();
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::height(
/* [retval][out] */ int* h)
{
if (!h)
return E_POINTER;
*h = m_scrollBar->height();
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::requestedWidth(
/* [retval][out] */ int* w)
{
if (!w)
return E_POINTER;
*w = m_scrollBar->orientation() == VerticalScrollbar ? ScrollbarTheme::nativeTheme()->scrollbarThickness(m_scrollBar->controlSize()) : -1;
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::requestedHeight(
/* [retval][out] */ int* h)
{
if (!h)
return E_POINTER;
*h = m_scrollBar->orientation() == HorizontalScrollbar ? ScrollbarTheme::nativeTheme()->scrollbarThickness(m_scrollBar->controlSize()) : -1;
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::handleMouseEvent(
OLE_HANDLE window,
UINT msg,
WPARAM wParam,
LPARAM lParam)
{
PlatformMouseEvent mouseEvent((HWND)(ULONG64)window, msg, wParam, lParam);
switch (msg) {
case WM_LBUTTONDOWN:
m_scrollBar->mouseDown(mouseEvent);
break;
case WM_LBUTTONUP:
m_scrollBar->mouseUp();
break;
case WM_MOUSEMOVE:
m_scrollBar->mouseMoved(mouseEvent);
break;
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebScrollBar::scroll(
WebScrollDirection direction,
WebScrollGranularity granularity,
float multiplier)
{
ScrollDirection webCoreScrollDirection = (ScrollDirection) direction;
ScrollGranularity webCoreGranularity = (ScrollGranularity) granularity;
ScrollableArea::scroll(webCoreScrollDirection, webCoreGranularity, multiplier);
return S_OK;
}
// ScrollableArea -------------------------------------------------------
int WebScrollBar::scrollSize(ScrollbarOrientation orientation) const
{
return (orientation == m_scrollBar->orientation()) ? (m_scrollBar->totalSize() - m_scrollBar->visibleSize()) : 0;
}
int WebScrollBar::scrollPosition(Scrollbar*) const
{
return m_currentPosition;
}
void WebScrollBar::setScrollOffset(const IntPoint& offset)
{
m_currentPosition = (m_scrollBar->orientation() == HorizontalScrollbar) ? offset.x() : offset.y();
m_delegate->valueChanged(this);
}
void WebScrollBar::invalidateScrollbarRect(Scrollbar*, const IntRect& rect)
{
RECT r = rect;
::InvalidateRect(m_containingWindow, &r, false);
}
Scrollbar* WebScrollBar::horizontalScrollbar() const
{
return m_scrollBar->orientation() == HorizontalScrollbar ? m_scrollBar.get() : 0;
}
Scrollbar* WebScrollBar::verticalScrollbar() const
{
return m_scrollBar->orientation() == VerticalScrollbar ? m_scrollBar.get() : 0;
}