gecko/gfx/thebes/gfxWindowsSurface.cpp
2011-01-31 22:47:47 -05:00

331 lines
9.5 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Oracle Corporation code.
*
* The Initial Developer of the Original Code is Oracle Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "gfxWindowsSurface.h"
#include "gfxContext.h"
#include "gfxPlatform.h"
#include "cairo.h"
#include "cairo-win32.h"
#include "nsString.h"
gfxWindowsSurface::gfxWindowsSurface(HWND wnd, PRUint32 flags) :
mOwnsDC(PR_TRUE), mForPrinting(PR_FALSE), mWnd(wnd)
{
mDC = ::GetDC(mWnd);
InitWithDC(flags);
}
gfxWindowsSurface::gfxWindowsSurface(HDC dc, PRUint32 flags) :
mOwnsDC(PR_FALSE), mForPrinting(PR_FALSE), mDC(dc), mWnd(nsnull)
{
if (flags & FLAG_TAKE_DC)
mOwnsDC = PR_TRUE;
#ifdef NS_PRINTING
if (flags & FLAG_FOR_PRINTING) {
Init(cairo_win32_printing_surface_create(mDC));
mForPrinting = PR_TRUE;
} else
#endif
InitWithDC(flags);
}
gfxWindowsSurface::gfxWindowsSurface(const gfxIntSize& size, gfxImageFormat imageFormat) :
mOwnsDC(PR_FALSE), mForPrinting(PR_FALSE), mWnd(nsnull)
{
if (!CheckSurfaceSize(size))
return;
cairo_surface_t *surf = cairo_win32_surface_create_with_dib((cairo_format_t)imageFormat,
size.width, size.height);
Init(surf);
RecordMemoryUsed(size.width * size.height * 4 + sizeof(gfxWindowsSurface));
if (CairoStatus() == 0)
mDC = cairo_win32_surface_get_dc(CairoSurface());
else
mDC = nsnull;
}
gfxWindowsSurface::gfxWindowsSurface(HDC dc, const gfxIntSize& size, gfxImageFormat imageFormat) :
mOwnsDC(PR_FALSE), mForPrinting(PR_FALSE), mWnd(nsnull)
{
if (!CheckSurfaceSize(size))
return;
cairo_surface_t *surf = cairo_win32_surface_create_with_ddb(dc, (cairo_format_t)imageFormat,
size.width, size.height);
Init(surf);
// DDBs will generally only use 3 bytes per pixel when RGB24
int bytesPerPixel = ((imageFormat == gfxASurface::ImageFormatRGB24) ? 3 : 4);
RecordMemoryUsed(size.width * size.height * bytesPerPixel + sizeof(gfxWindowsSurface));
if (CairoStatus() == 0)
mDC = cairo_win32_surface_get_dc(CairoSurface());
else
mDC = nsnull;
}
gfxWindowsSurface::gfxWindowsSurface(cairo_surface_t *csurf) :
mOwnsDC(PR_FALSE), mForPrinting(PR_FALSE), mWnd(nsnull)
{
if (cairo_surface_status(csurf) == 0)
mDC = cairo_win32_surface_get_dc(csurf);
else
mDC = nsnull;
if (cairo_surface_get_type(csurf) == CAIRO_SURFACE_TYPE_WIN32_PRINTING)
mForPrinting = PR_TRUE;
Init(csurf, PR_TRUE);
}
void
gfxWindowsSurface::InitWithDC(PRUint32 flags)
{
if (flags & FLAG_IS_TRANSPARENT) {
Init(cairo_win32_surface_create_with_alpha(mDC));
} else {
Init(cairo_win32_surface_create(mDC));
}
}
already_AddRefed<gfxASurface>
gfxWindowsSurface::CreateSimilarSurface(gfxContentType aContent,
const gfxIntSize& aSize)
{
if (!mSurface || !mSurfaceValid) {
return nsnull;
}
cairo_surface_t *surface;
if (GetContentType() == CONTENT_COLOR_ALPHA) {
// When creating a similar surface to a transparent surface, ensure
// the new surface uses a DIB. cairo_surface_create_similar won't
// use a DIB for a CONTENT_COLOR surface if this surface doesn't
// have a DIB (e.g. if we're a transparent window surface). But
// we need a DIB to perform well if the new surface is composited into
// a surface that's the result of create_similar(CONTENT_COLOR_ALPHA)
// (e.g. a backbuffer for the window) --- that new surface *would*
// have a DIB.
surface =
cairo_win32_surface_create_with_dib(cairo_format_t(gfxASurface::FormatFromContent(aContent)),
aSize.width, aSize.height);
} else {
surface =
cairo_surface_create_similar(mSurface, cairo_content_t(aContent),
aSize.width, aSize.height);
}
if (cairo_surface_status(surface)) {
cairo_surface_destroy(surface);
return nsnull;
}
nsRefPtr<gfxASurface> result = Wrap(surface);
cairo_surface_destroy(surface);
return result.forget();
}
gfxWindowsSurface::~gfxWindowsSurface()
{
if (mOwnsDC) {
if (mWnd)
::ReleaseDC(mWnd, mDC);
else
::DeleteDC(mDC);
}
}
HDC
gfxWindowsSurface::GetDCWithClip(gfxContext *ctx)
{
return cairo_win32_get_dc_with_clip (ctx->GetCairo());
}
already_AddRefed<gfxImageSurface>
gfxWindowsSurface::GetAsImageSurface()
{
if (!mSurfaceValid) {
NS_WARNING ("GetImageSurface on an invalid (null) surface; who's calling this without checking for surface errors?");
return nsnull;
}
NS_ASSERTION(CairoSurface() != nsnull, "CairoSurface() shouldn't be nsnull when mSurfaceValid is TRUE!");
if (mForPrinting)
return nsnull;
cairo_surface_t *isurf = cairo_win32_surface_get_image(CairoSurface());
if (!isurf)
return nsnull;
nsRefPtr<gfxASurface> asurf = gfxASurface::Wrap(isurf);
gfxImageSurface *imgsurf = (gfxImageSurface*) asurf.get();
NS_ADDREF(imgsurf);
return imgsurf;
}
already_AddRefed<gfxWindowsSurface>
gfxWindowsSurface::OptimizeToDDB(HDC dc, const gfxIntSize& size, gfxImageFormat format)
{
if (mForPrinting)
return nsnull;
if (format != ImageFormatRGB24)
return nsnull;
nsRefPtr<gfxWindowsSurface> wsurf = new gfxWindowsSurface(dc, size, format);
if (wsurf->CairoStatus() != 0)
return nsnull;
gfxContext tmpCtx(wsurf);
tmpCtx.SetOperator(gfxContext::OPERATOR_SOURCE);
tmpCtx.SetSource(this);
tmpCtx.Paint();
gfxWindowsSurface *raw = (gfxWindowsSurface*) (wsurf.get());
NS_ADDREF(raw);
// we let the new DDB surfaces be converted back to dibsections if
// acquire_source_image is called on them
cairo_win32_surface_set_can_convert_to_dib(raw->CairoSurface(), TRUE);
return raw;
}
nsresult
gfxWindowsSurface::BeginPrinting(const nsAString& aTitle,
const nsAString& aPrintToFileName)
{
#ifdef NS_PRINTING
#define DOC_TITLE_LENGTH (MAX_PATH-1)
DOCINFOW docinfo;
nsString titleStr(aTitle);
if (titleStr.Length() > DOC_TITLE_LENGTH) {
titleStr.SetLength(DOC_TITLE_LENGTH-3);
titleStr.AppendLiteral("...");
}
nsString docName(aPrintToFileName);
docinfo.cbSize = sizeof(docinfo);
docinfo.lpszDocName = titleStr.Length() > 0 ? titleStr.get() : L"Mozilla Document";
docinfo.lpszOutput = docName.Length() > 0 ? docName.get() : nsnull;
docinfo.lpszDatatype = NULL;
docinfo.fwType = 0;
::StartDocW(mDC, &docinfo);
return NS_OK;
#else
return NS_ERROR_FAILURE;
#endif
}
nsresult
gfxWindowsSurface::EndPrinting()
{
#ifdef NS_PRINTING
int result = ::EndDoc(mDC);
if (result <= 0)
return NS_ERROR_FAILURE;
return NS_OK;
#else
return NS_ERROR_FAILURE;
#endif
}
nsresult
gfxWindowsSurface::AbortPrinting()
{
#ifdef NS_PRINTING
int result = ::AbortDoc(mDC);
if (result <= 0)
return NS_ERROR_FAILURE;
return NS_OK;
#else
return NS_ERROR_FAILURE;
#endif
}
nsresult
gfxWindowsSurface::BeginPage()
{
#ifdef NS_PRINTING
int result = ::StartPage(mDC);
if (result <= 0)
return NS_ERROR_FAILURE;
return NS_OK;
#else
return NS_ERROR_FAILURE;
#endif
}
nsresult
gfxWindowsSurface::EndPage()
{
#ifdef NS_PRINTING
if (mForPrinting)
cairo_surface_show_page(CairoSurface());
int result = ::EndPage(mDC);
if (result <= 0)
return NS_ERROR_FAILURE;
return NS_OK;
#else
return NS_ERROR_FAILURE;
#endif
}
PRInt32
gfxWindowsSurface::GetDefaultContextFlags() const
{
if (mForPrinting)
return gfxContext::FLAG_SIMPLIFY_OPERATORS |
gfxContext::FLAG_DISABLE_SNAPPING |
gfxContext::FLAG_DISABLE_COPY_BACKGROUND;
return 0;
}