1 /*
2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
3 * Copyright (C) 2007-2009 Torch Mobile, 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 "Frame.h"
29
30 #include "Document.h"
31 #include "FloatRect.h"
32 #include "FrameView.h"
33 #include "GraphicsContext.h"
34 #include "HTMLIFrameElement.h"
35 #include "HTMLNames.h"
36 #include "HTMLTableCellElement.h"
37 #include "KeyboardEvent.h"
38 #include "NotImplemented.h"
39 #include "Page.h"
40 #include "RenderFrame.h"
41 #include "RenderLayer.h"
42 #include "RenderView.h"
43 #include "ResourceHandle.h"
44
45 #include <windows.h>
46
47 using std::min;
48
49 namespace WebCore {
50
51 using namespace HTMLNames;
52
53 extern HDC g_screenDC;
54
computePageRectsForFrame(Frame * frame,const IntRect & printRect,float headerHeight,float footerHeight,float userScaleFactor,Vector<IntRect> & pages,int & outPageHeight)55 void computePageRectsForFrame(Frame* frame, const IntRect& printRect, float headerHeight, float footerHeight, float userScaleFactor, Vector<IntRect>& pages, int& outPageHeight)
56 {
57 ASSERT(frame);
58
59 pages.clear();
60 outPageHeight = 0;
61
62 if (!frame->document() || !frame->view() || !frame->document()->renderer())
63 return;
64
65 RenderView* root = toRenderView(frame->document()->renderer());
66
67 if (!root) {
68 LOG_ERROR("document to be printed has no renderer");
69 return;
70 }
71
72 if (userScaleFactor <= 0) {
73 LOG_ERROR("userScaleFactor has bad value %.2f", userScaleFactor);
74 return;
75 }
76
77 float ratio = (float)printRect.height() / (float)printRect.width();
78
79 float pageWidth = (float) root->maxXLayoutOverflow();
80 float pageHeight = pageWidth * ratio;
81 outPageHeight = (int) pageHeight; // this is the height of the page adjusted by margins
82 pageHeight -= (headerHeight + footerHeight);
83
84 if (pageHeight <= 0) {
85 LOG_ERROR("pageHeight has bad value %.2f", pageHeight);
86 return;
87 }
88
89 float currPageHeight = pageHeight / userScaleFactor;
90 float docHeight = root->layer()->height();
91 float docWidth = root->layer()->width();
92 float currPageWidth = pageWidth / userScaleFactor;
93
94
95 // always return at least one page, since empty files should print a blank page
96 float printedPagesHeight = 0.0;
97 do {
98 float proposedBottom = min(docHeight, printedPagesHeight + pageHeight);
99 frame->view()->adjustPageHeightDeprecated(&proposedBottom, printedPagesHeight, proposedBottom, printedPagesHeight);
100 currPageHeight = max(1.0f, proposedBottom - printedPagesHeight);
101
102 pages.append(IntRect(0, printedPagesHeight, currPageWidth, currPageHeight));
103 printedPagesHeight += currPageHeight;
104 } while (printedPagesHeight < docHeight);
105 }
106
imageFromSelection(Frame * frame,bool forceBlackText)107 HBITMAP imageFromSelection(Frame* frame, bool forceBlackText)
108 {
109 if (!frame->view())
110 return 0;
111
112 frame->view()->setPaintBehavior(PaintBehaviorSelectionOnly | (forceBlackText ? PaintBehaviorForceBlackText : 0));
113 FloatRect fr = frame->selection()->bounds();
114 IntRect ir((int)fr.x(), (int)fr.y(), (int)fr.width(), (int)fr.height());
115 if (ir.isEmpty())
116 return 0;
117
118 int w;
119 int h;
120 FrameView* view = frame->view();
121 if (view->parent()) {
122 ir.setLocation(view->parent()->convertChildToSelf(view, ir.location()));
123 w = ir.width() * frame->pageZoomFactor() + 0.5;
124 h = ir.height() * frame->pageZoomFactor() + 0.5;
125 } else {
126 ir = view->contentsToWindow(ir);
127 w = ir.width();
128 h = ir.height();
129 }
130
131 OwnPtr<HDC> bmpDC(CreateCompatibleDC(g_screenDC));
132 HBITMAP hBmp = CreateCompatibleBitmap(g_screenDC, w, h);
133 if (!hBmp)
134 return 0;
135
136 HGDIOBJ hbmpOld = SelectObject(bmpDC.get(), hBmp);
137
138 {
139 GraphicsContext gc(bmpDC.get());
140 frame->document()->updateLayout();
141 view->paint(&gc, ir);
142 }
143
144 SelectObject(bmpDC.get(), hbmpOld);
145
146 frame->view()->setPaintBehavior(PaintBehaviorNormal);
147
148 return hBmp;
149 }
150
nodeImage(Node *)151 DragImageRef Frame::nodeImage(Node*)
152 {
153 notImplemented();
154 return 0;
155 }
156
dragImageForSelection()157 DragImageRef Frame::dragImageForSelection()
158 {
159 if (selection()->isRange())
160 return imageFromSelection(this, false);
161
162 return 0;
163 }
164
165 } // namespace WebCore
166