WebCore/page/wince/FrameWince.cpp
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/wince/FrameWince.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,158 @@
+/*
+ * 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 "FrameView.h"
+#include "GraphicsContext.h"
+#include "HTMLIFrameElement.h"
+#include "HTMLNames.h"
+#include "HTMLTableCellElement.h"
+#include "KeyboardEvent.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()->renderer())
+        return;
+
+    RenderView* root = toRenderView(frame->document()->renderer());
+
+    if (!root) {
+        LOG_ERROR("document to be printed has no renderer");
+        return;
+    }
+
+    if (userScaleFactor <= 0) {
+        LOG_ERROR("userScaleFactor has bad value %.2f", userScaleFactor);
+        return;
+    }
+
+    float ratio = (float)printRect.height() / (float)printRect.width();
+
+    float pageWidth  = (float) root->rightLayoutOverflow();
+    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()->height();
+    float docWidth       = root->layer()->width();
+    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()->adjustPageHeight(&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()->setPaintRestriction(forceBlackText ? PaintRestrictionSelectionOnlyBlackText : PaintRestrictionSelectionOnly);
+    FloatRect fr = frame->selectionBounds();
+    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() * view->zoomFactor() + 0.5;
+        h = ir.height() * view->zoomFactor() + 0.5;
+    } else {
+        ir = view->contentsToWindow(ir);
+        w = ir.width();
+        h = ir.height();
+    }
+
+    OwnPtr<HDC> bmpDC(CreateCompatibleDC(g_screenDC));
+    HBITMAP hBmp = MemoryManager::createCompatibleBitmap(g_screenDC, w, h);
+    if (!hBmp)
+        return 0;
+
+    HBITMAP hbmpOld = (HBITMAP)SelectObject(bmpDC.get(), hBmp);
+
+    {
+        GraphicsContext gc(bmpDC.get());
+        frame->document()->updateLayout();
+        view->paint(&gc, ir);
+    }
+
+    SelectObject(bmpDC.get(), hbmpOld);
+
+    frame->view()->setPaintRestriction(PaintRestrictionNone);
+
+    return hBmp;
+}
+
+DragImageRef Frame::dragImageForSelection()
+{
+    if (selection()->isRange())
+        return imageFromSelection(this, false);
+
+    return 0;
+}
+
+} // namespace WebCore