diff options
Diffstat (limited to 'WebCore/platform/win/DragImageCairoWin.cpp')
| -rw-r--r-- | WebCore/platform/win/DragImageCairoWin.cpp | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/WebCore/platform/win/DragImageCairoWin.cpp b/WebCore/platform/win/DragImageCairoWin.cpp deleted file mode 100644 index e356575..0000000 --- a/WebCore/platform/win/DragImageCairoWin.cpp +++ /dev/null @@ -1,191 +0,0 @@ -/* - * Copyright (C) 2008 Apple Inc. All rights reserved. - * - * 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 "DragImage.h" - -#include "BitmapInfo.h" -#include "CachedImage.h" -#include "GraphicsContext.h" -#include "Image.h" -#include "RetainPtr.h" - -#include <cairo-win32.h> -#include "GraphicsContextPlatformPrivateCairo.h" - -#include <windows.h> - -extern "C" { -typedef struct _cairo* CairoContextRef; -} - -namespace WebCore { - -void deallocContext(CairoContextRef target) -{ - cairo_destroy(target); -} - -HBITMAP allocImage(HDC dc, IntSize size, CairoContextRef* targetRef) -{ - BitmapInfo bmpInfo = BitmapInfo::create(size); - - LPVOID bits; - HBITMAP hbmp = CreateDIBSection(dc, &bmpInfo, DIB_RGB_COLORS, &bits, 0, 0); - - // At this point, we have a Cairo surface that points to a Windows DIB. The DIB interprets - // with the opposite meaning of positive Y axis, so everything we draw into this cairo - // context is going to be upside down. - if (!targetRef) - return hbmp; - - cairo_surface_t* bitmapContext = cairo_image_surface_create_for_data((unsigned char*)bits, - CAIRO_FORMAT_ARGB32, - bmpInfo.bmiHeader.biWidth, - bmpInfo.bmiHeader.biHeight, - bmpInfo.bmiHeader.biWidth * 4); - - if (!bitmapContext) { - DeleteObject(hbmp); - return 0; - } - - *targetRef = cairo_create (bitmapContext); - cairo_surface_destroy (bitmapContext); - - // At this point, we have a Cairo surface that points to a Windows DIB. The DIB interprets - // with the opposite meaning of positive Y axis, so everything we draw into this cairo - // context is going to be upside down. - // - // So, we must invert the CTM for the context so that drawing commands will be flipped - // before they get written to the internal buffer. - cairo_matrix_t matrix; - cairo_matrix_init(&matrix, 1.0, 0.0, 0.0, -1.0, 0.0, size.height()); - cairo_set_matrix(*targetRef, &matrix); - - return hbmp; -} - -static cairo_surface_t* createCairoContextFromBitmap(HBITMAP bitmap) -{ - BITMAP info; - GetObject(bitmap, sizeof(info), &info); - ASSERT(info.bmBitsPixel == 32); - - // At this point, we have a Cairo surface that points to a Windows BITMAP. The BITMAP - // has the opposite meaning of positive Y axis, so everything we draw into this cairo - // context is going to be upside down. - return cairo_image_surface_create_for_data((unsigned char*)info.bmBits, - CAIRO_FORMAT_ARGB32, - info.bmWidth, - info.bmHeight, - info.bmWidthBytes); -} - -DragImageRef scaleDragImage(DragImageRef image, FloatSize scale) -{ - // FIXME: due to the way drag images are done on windows we need - // to preprocess the alpha channel <rdar://problem/5015946> - if (!image) - return 0; - - IntSize srcSize = dragImageSize(image); - IntSize dstSize(static_cast<int>(srcSize.width() * scale.width()), static_cast<int>(srcSize.height() * scale.height())); - - HBITMAP hbmp = 0; - HDC dc = GetDC(0); - HDC dstDC = CreateCompatibleDC(dc); - - if (!dstDC) - goto exit; - - CairoContextRef targetContext; - hbmp = allocImage(dstDC, dstSize, &targetContext); - if (!hbmp) - goto exit; - - cairo_surface_t* srcImage = createCairoContextFromBitmap(image); - - // Scale the target surface to the new image size, and flip it - // so that when we set the srcImage as the surface it will draw - // right-side-up. - cairo_translate(targetContext, 0, dstSize.height()); - cairo_scale(targetContext, scale.width(), -scale.height()); - cairo_set_source_surface (targetContext, srcImage, 0.0, 0.0); - - // Now we can paint and get the correct result - cairo_paint(targetContext); - - cairo_surface_destroy (srcImage); - cairo_destroy(targetContext); - ::DeleteObject(image); - image = 0; - -exit: - if (!hbmp) - hbmp = image; - if (dstDC) - DeleteDC(dstDC); - ReleaseDC(0, dc); - return hbmp; -} - -DragImageRef createDragImageFromImage(Image* img) -{ - HBITMAP hbmp = 0; - HDC dc = GetDC(0); - HDC workingDC = CreateCompatibleDC(dc); - if (!workingDC) - goto exit; - - CairoContextRef drawContext = 0; - hbmp = allocImage(workingDC, img->size(), &drawContext); - if (!hbmp) - goto exit; - - if (!drawContext) { - ::DeleteObject(hbmp); - hbmp = 0; - } - - cairo_set_source_rgb (drawContext, 1.0, 0.0, 1.0); - cairo_fill_preserve (drawContext); - - cairo_surface_t* srcImage = img->nativeImageForCurrentFrame(); - - // Draw the image. - cairo_set_source_surface(drawContext, srcImage, 0.0, 0.0); - cairo_paint(drawContext); - - cairo_destroy (drawContext); - -exit: - if (workingDC) - DeleteDC(workingDC); - ReleaseDC(0, dc); - return hbmp; -} - -} |