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/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
* Copyright (C) 2007-2009 Torch Mobile, Inc.
*
* 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 "Frame.h"
#include "Document.h"
#include "FloatRect.h"
#include "FrameSelection.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "HTMLIFrameElement.h"
#include "HTMLNames.h"
#include "HTMLTableCellElement.h"
#include "KeyboardEvent.h"
#include "NotImplemented.h"
#include "Page.h"
#include "RenderFrame.h"
#include "RenderLayer.h"
#include "RenderView.h"
#include "ResourceHandle.h"
#include <windows.h>
using std::min;
namespace WebCore {
using namespace HTMLNames;
extern HDC g_screenDC;
void computePageRectsForFrame(Frame* frame, const IntRect& printRect, float headerHeight, float footerHeight, float userScaleFactor, Vector<IntRect>& pages, int& outPageHeight)
{
ASSERT(frame);
pages.clear();
outPageHeight = 0;
if (!frame->document() || !frame->view() || !frame->document()->renderView())
return;
RenderView* root = frame->document()->renderView();
if (userScaleFactor <= 0) {
LOG_ERROR("userScaleFactor has bad value %.2f", userScaleFactor);
return;
}
float ratio = (float)printRect.height() / (float)printRect.width();
float pageWidth = (float) root->layoutOverflowRect().maxX();
float pageHeight = pageWidth * ratio;
outPageHeight = (int) pageHeight; // this is the height of the page adjusted by margins
pageHeight -= (headerHeight + footerHeight);
if (pageHeight <= 0) {
LOG_ERROR("pageHeight has bad value %.2f", pageHeight);
return;
}
float currPageHeight = pageHeight / userScaleFactor;
float docHeight = root->layer()->size().height();
float currPageWidth = pageWidth / userScaleFactor;
// always return at least one page, since empty files should print a blank page
float printedPagesHeight = 0.0;
do {
float proposedBottom = min(docHeight, printedPagesHeight + pageHeight);
frame->view()->adjustPageHeightDeprecated(&proposedBottom, printedPagesHeight, proposedBottom, printedPagesHeight);
currPageHeight = max(1.0f, proposedBottom - printedPagesHeight);
pages.append(IntRect(0, printedPagesHeight, currPageWidth, currPageHeight));
printedPagesHeight += currPageHeight;
} while (printedPagesHeight < docHeight);
}
HBITMAP imageFromSelection(Frame* frame, bool forceBlackText)
{
if (!frame->view())
return 0;
frame->view()->setPaintBehavior(PaintBehaviorSelectionOnly | (forceBlackText ? PaintBehaviorForceBlackText : 0));
FloatRect fr = frame->selection()->bounds();
IntRect ir((int)fr.x(), (int)fr.y(), (int)fr.width(), (int)fr.height());
if (ir.isEmpty())
return 0;
int w;
int h;
FrameView* view = frame->view();
if (view->parent()) {
ir.setLocation(view->parent()->convertChildToSelf(view, ir.location()));
w = ir.width() * frame->pageZoomFactor() + 0.5;
h = ir.height() * frame->pageZoomFactor() + 0.5;
} else {
ir = view->contentsToWindow(ir);
w = ir.width();
h = ir.height();
}
OwnPtr<HDC> bmpDC = adoptPtr(CreateCompatibleDC(g_screenDC));
HBITMAP hBmp = CreateCompatibleBitmap(g_screenDC, w, h);
if (!hBmp)
return 0;
HGDIOBJ hbmpOld = SelectObject(bmpDC.get(), hBmp);
{
GraphicsContext gc(bmpDC.get());
frame->document()->updateLayout();
view->paint(&gc, ir);
}
SelectObject(bmpDC.get(), hbmpOld);
frame->view()->setPaintBehavior(PaintBehaviorNormal);
return hBmp;
}
DragImageRef Frame::nodeImage(Node*)
{
notImplemented();
return 0;
}
DragImageRef Frame::dragImageForSelection()
{
if (selection()->isRange())
return imageFromSelection(this, false);
return 0;
}
} // namespace WebCore
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