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/*
* Copyright (C) 2008 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 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 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 "ScrollbarThemeWx.h"
#include "HostWindow.h"
#include "NotImplemented.h"
#include "PlatformMouseEvent.h"
#include "ScrollableArea.h"
#include "Scrollbar.h"
#include "scrollbar_render.h"
#include "ScrollbarThemeComposite.h"
#include "ScrollView.h"
#include <wx/defs.h>
#include <wx/dcgraph.h>
#include <wx/settings.h>
const int cMacButtonOverlap = 4;
namespace WebCore {
ScrollbarTheme* ScrollbarTheme::nativeTheme()
{
static ScrollbarThemeWx theme;
return &theme;
}
ScrollbarThemeWx::~ScrollbarThemeWx()
{
}
int ScrollbarThemeWx::scrollbarThickness(ScrollbarControlSize size)
{
int thickness = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
// fallback for when a platform doesn't define this metric
if (thickness <= 0)
thickness = 20;
return thickness;
}
bool ScrollbarThemeWx::hasThumb(Scrollbar* scrollbar)
{
// This method is just called as a paint-time optimization to see if
// painting the thumb can be skipped. We don't have to be exact here.
return thumbLength(scrollbar) > 0;
}
int ScrollbarThemeWx::minimumThumbLength(Scrollbar* scrollbar)
{
return 20;
}
IntSize ScrollbarThemeWx::buttonSize(Scrollbar*)
{
#ifdef __WXMAC__
return IntSize(20,20);
#else
return IntSize(16,16);
#endif
}
void ScrollbarThemeWx::splitTrack(Scrollbar* scrollbar, const IntRect& unconstrainedTrackRect, IntRect& beforeThumbRect, IntRect& thumbRect, IntRect& afterThumbRect)
{
ScrollbarThemeComposite::splitTrack(scrollbar, unconstrainedTrackRect, beforeThumbRect, thumbRect, afterThumbRect);
#ifdef __WXMAC__
// on Mac, there are a few pixels drawn above the actual track and so adjust
// the hit testing rects accordingly
int trackStart = 10;
if (scrollbar->orientation() == HorizontalScrollbar) {
thumbRect.setX(thumbRect.x() + trackStart);
afterThumbRect.setX(afterThumbRect.x() - trackStart);
} else {
thumbRect.setY(thumbRect.y() + trackStart);
afterThumbRect.setY(afterThumbRect.y() - trackStart);
}
#endif
}
IntRect ScrollbarThemeWx::backButtonRect(Scrollbar* scrollbar, ScrollbarPart part, bool)
{
// FIXME: Handling this case is needed when there are two sets of arrow buttons
// on Mac, one at the top and one at the bottom.
if (part == BackButtonEndPart)
return IntRect();
IntSize size = buttonSize(scrollbar);
int x = scrollbar->x();
int y = scrollbar->y();
#if __WXMAC__
if (scrollbar->orientation() == HorizontalScrollbar)
x += scrollbar->width() - (size.width() * 2) + cMacButtonOverlap;
else
y += scrollbar->height() - (size.height() * 2) + cMacButtonOverlap;
#endif
return IntRect(x, y, size.width(), size.height());
}
IntRect ScrollbarThemeWx::forwardButtonRect(Scrollbar* scrollbar, ScrollbarPart part, bool)
{
// FIXME: Handling this case is needed when there are two sets of arrow buttons
// on Mac, one at the top and one at the bottom.
if (part == ForwardButtonStartPart)
return IntRect();
IntSize size = buttonSize(scrollbar);
int x, y;
if (scrollbar->orientation() == HorizontalScrollbar) {
#ifdef __WXMAC__
size.setWidth(size.width() + cMacButtonOverlap);
#endif
x = scrollbar->x() + scrollbar->width() - size.width();
y = scrollbar->y();
} else {
x = scrollbar->x();
#ifdef __WXMAC__
size.setHeight(size.height() + cMacButtonOverlap);
#endif
y = scrollbar->y() + scrollbar->height() - size.height();
}
return IntRect(x, y, size.width(), size.height());
}
IntRect ScrollbarThemeWx::trackRect(Scrollbar* scrollbar, bool)
{
IntSize bs = buttonSize(scrollbar);
int trackStart = 0;
if (scrollbar->orientation() == HorizontalScrollbar)
trackStart = bs.width();
else
trackStart = bs.height();
#if __WXMAC__
trackStart = 0;
#endif
int thickness = scrollbarThickness(scrollbar->controlSize());
if (scrollbar->orientation() == HorizontalScrollbar) {
if (scrollbar->width() < 2 * thickness)
return IntRect();
return IntRect(scrollbar->x() + trackStart, scrollbar->y(), scrollbar->width() - 2 * bs.width(), thickness);
}
if (scrollbar->height() < 2 * thickness)
return IntRect();
return IntRect(scrollbar->x(), scrollbar->y() + trackStart, thickness, scrollbar->height() - 2 * bs.height());
}
void ScrollbarThemeWx::paintScrollCorner(ScrollView* view, GraphicsContext* context, const IntRect& cornerRect)
{
// ScrollbarThemeComposite::paintScrollCorner incorrectly assumes that the
// ScrollView is a FrameView (see FramelessScrollView), so we cannot let
// that code run. For FrameView's this is correct since we don't do custom
// scrollbar corner rendering, which ScrollbarThemeComposite supports.
ScrollbarTheme::paintScrollCorner(view, context, cornerRect);
}
bool ScrollbarThemeWx::paint(Scrollbar* scrollbar, GraphicsContext* context, const IntRect& rect)
{
wxOrientation orientation = (scrollbar->orientation() == HorizontalScrollbar) ? wxHORIZONTAL : wxVERTICAL;
int flags = 0;
if (scrollbar->scrollableArea()->isActive())
flags |= wxCONTROL_FOCUSED;
if (!scrollbar->enabled())
flags |= wxCONTROL_DISABLED;
wxDC* dc = static_cast<wxDC*>(context->platformContext());
context->save();
ScrollView* root = scrollbar->root();
ASSERT(root);
if (!root)
return false;
wxWindow* webview = root->hostWindow()->platformPageClient();
wxRenderer_DrawScrollbar(webview, *dc, scrollbar->frameRect(), orientation, scrollbar->currentPos(), static_cast<wxScrollbarPart>(scrollbar->pressedPart()),
static_cast<wxScrollbarPart>(scrollbar->hoveredPart()), scrollbar->maximum(), scrollbar->pageStep(), flags);
context->restore();
return true;
}
}
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