1/* 2 * Copyright (C) 2006, 2007, 2008, 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "FrameWin.h" 28 29#include "BitmapInfo.h" 30#include "Frame.h" 31#include "FrameSelection.h" 32#include "FrameView.h" 33#include "GraphicsContextCG.h" 34#include "RenderObject.h" 35#include "Settings.h" 36#include <CoreGraphics/CoreGraphics.h> 37#include <windows.h> 38#include <wtf/win/GDIObject.h> 39 40namespace WebCore { 41 42static void drawRectIntoContext(IntRect rect, FrameView* view, GraphicsContext* gc) 43{ 44 IntSize offset = view->scrollOffset(); 45 rect.move(-offset.width(), -offset.height()); 46 rect = view->convertToContainingWindow(rect); 47 48 gc->concatCTM(AffineTransform().translate(-rect.x(), -rect.y())); 49 50 view->paint(gc, rect); 51} 52 53GDIObject<HBITMAP> imageFromRect(const Frame* frame, IntRect& ir) 54{ 55 PaintBehavior oldPaintBehavior = frame->view()->paintBehavior(); 56 frame->view()->setPaintBehavior(oldPaintBehavior | PaintBehaviorFlattenCompositingLayers); 57 58 void* bits; 59 auto hdc = adoptGDIObject(::CreateCompatibleDC(0)); 60 int w = ir.width(); 61 int h = ir.height(); 62 BitmapInfo bmp = BitmapInfo::create(IntSize(w, h)); 63 64 GDIObject<HBITMAP> hbmp = adoptGDIObject(::CreateDIBSection(0, &bmp, DIB_RGB_COLORS, static_cast<void**>(&bits), 0, 0)); 65 HGDIOBJ hbmpOld = SelectObject(hdc.get(), hbmp.get()); 66 CGContextRef context = CGBitmapContextCreate(static_cast<void*>(bits), w, h, 67 8, w * sizeof(RGBQUAD), deviceRGBColorSpaceRef(), kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst); 68 CGContextSaveGState(context); 69 70 GraphicsContext gc(context); 71 72 drawRectIntoContext(ir, frame->view(), &gc); 73 74 CGContextRelease(context); 75 SelectObject(hdc.get(), hbmpOld); 76 77 frame->view()->setPaintBehavior(oldPaintBehavior); 78 79 return hbmp; 80} 81 82} // namespace WebCore 83