1 /*
2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "config.h"
28 #include "FrameChromium.h"
29
30 #include "Document.h"
31 #include "FloatRect.h"
32 #include "RenderView.h"
33 #include "Settings.h"
34
35 using std::min;
36
37 namespace WebCore {
38
computePageRectsForFrame(Frame * frame,const IntRect & printRect,float headerHeight,float footerHeight,float userScaleFactor,Vector<IntRect> & pages,int & outPageHeight)39 void computePageRectsForFrame(Frame* frame, const IntRect& printRect, float headerHeight, float footerHeight, float userScaleFactor, Vector<IntRect>& pages, int& outPageHeight)
40 {
41 ASSERT(frame);
42
43 pages.clear();
44 outPageHeight = 0;
45
46 if (!frame->document() || !frame->view() || !frame->document()->renderer())
47 return;
48
49 RenderView* root = toRenderView(frame->document()->renderer());
50
51 if (!root) {
52 LOG_ERROR("document to be printed has no renderer");
53 return;
54 }
55
56 if (userScaleFactor <= 0) {
57 LOG_ERROR("userScaleFactor has bad value %.2f", userScaleFactor);
58 return;
59 }
60
61 float ratio = static_cast<float>(printRect.height()) / static_cast<float>(printRect.width());
62
63 float pageWidth = static_cast<float>(root->overflowWidth());
64 float pageHeight = pageWidth * ratio;
65 outPageHeight = static_cast<int>(pageHeight); // this is the height of the page adjusted by margins
66 pageHeight -= (headerHeight + footerHeight);
67
68 if (pageHeight <= 0) {
69 LOG_ERROR("pageHeight has bad value %.2f", pageHeight);
70 return;
71 }
72
73 float currPageHeight = pageHeight / userScaleFactor;
74 float docHeight = root->layer()->height();
75 float currPageWidth = pageWidth / userScaleFactor;
76
77
78 // always return at least one page, since empty files should print a blank page
79 float printedPagesHeight = 0.0f;
80 do {
81 float proposedBottom = min(docHeight, printedPagesHeight + pageHeight);
82 frame->view()->adjustPageHeight(&proposedBottom, printedPagesHeight, proposedBottom, printedPagesHeight);
83 currPageHeight = max(1.0f, proposedBottom - printedPagesHeight);
84
85 pages.append(IntRect(0, printedPagesHeight, currPageWidth, currPageHeight));
86 printedPagesHeight += currPageHeight;
87 } while (printedPagesHeight < docHeight);
88 }
89
dragImageForSelection()90 DragImageRef Frame::dragImageForSelection()
91 {
92 if (selection()->isRange())
93 return 0; // FIXME: implement me!
94
95 return 0;
96 }
97
98 } // namespace WebCore
99