зеркало из https://github.com/mozilla/gecko-dev.git
316 строки
8.4 KiB
C++
316 строки
8.4 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "gfxWindowsSurface.h"
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#include "gfxContext.h"
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#include "gfxPlatform.h"
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#include "cairo.h"
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#include "cairo-win32.h"
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#include "nsString.h"
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gfxWindowsSurface::gfxWindowsSurface(HWND wnd, uint32_t flags) :
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mOwnsDC(true), mForPrinting(false), mWnd(wnd)
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{
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mDC = ::GetDC(mWnd);
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InitWithDC(flags);
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}
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gfxWindowsSurface::gfxWindowsSurface(HDC dc, uint32_t flags) :
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mOwnsDC(false), mForPrinting(false), mDC(dc), mWnd(nullptr)
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{
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if (flags & FLAG_TAKE_DC)
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mOwnsDC = true;
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#ifdef NS_PRINTING
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if (flags & FLAG_FOR_PRINTING) {
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Init(cairo_win32_printing_surface_create(mDC));
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mForPrinting = true;
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} else
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#endif
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InitWithDC(flags);
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}
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gfxWindowsSurface::gfxWindowsSurface(IDirect3DSurface9 *surface, uint32_t flags) :
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mOwnsDC(false), mForPrinting(false), mDC(0), mWnd(nullptr)
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{
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cairo_surface_t *surf = cairo_win32_surface_create_with_d3dsurface9(surface);
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Init(surf);
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}
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void
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gfxWindowsSurface::MakeInvalid(gfxIntSize& size)
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{
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size = gfxIntSize(-1, -1);
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}
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gfxWindowsSurface::gfxWindowsSurface(const gfxIntSize& realSize, gfxImageFormat imageFormat) :
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mOwnsDC(false), mForPrinting(false), mWnd(nullptr)
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{
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gfxIntSize size(realSize);
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if (!CheckSurfaceSize(size))
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MakeInvalid(size);
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cairo_surface_t *surf = cairo_win32_surface_create_with_dib((cairo_format_t)(int)imageFormat,
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size.width, size.height);
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Init(surf);
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if (CairoStatus() == CAIRO_STATUS_SUCCESS) {
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mDC = cairo_win32_surface_get_dc(CairoSurface());
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RecordMemoryUsed(size.width * size.height * 4 + sizeof(gfxWindowsSurface));
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} else {
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mDC = nullptr;
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}
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}
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gfxWindowsSurface::gfxWindowsSurface(HDC dc, const gfxIntSize& realSize, gfxImageFormat imageFormat) :
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mOwnsDC(false), mForPrinting(false), mWnd(nullptr)
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{
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gfxIntSize size(realSize);
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if (!CheckSurfaceSize(size))
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MakeInvalid(size);
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cairo_surface_t *surf = cairo_win32_surface_create_with_ddb(dc, (cairo_format_t)(int)imageFormat,
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size.width, size.height);
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Init(surf);
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if (mSurfaceValid) {
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// DDBs will generally only use 3 bytes per pixel when RGB24
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int bytesPerPixel = ((imageFormat == gfxImageFormat::RGB24) ? 3 : 4);
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RecordMemoryUsed(size.width * size.height * bytesPerPixel + sizeof(gfxWindowsSurface));
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}
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if (CairoStatus() == 0)
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mDC = cairo_win32_surface_get_dc(CairoSurface());
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else
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mDC = nullptr;
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}
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gfxWindowsSurface::gfxWindowsSurface(cairo_surface_t *csurf) :
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mOwnsDC(false), mForPrinting(false), mWnd(nullptr)
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{
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if (cairo_surface_status(csurf) == 0)
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mDC = cairo_win32_surface_get_dc(csurf);
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else
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mDC = nullptr;
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if (cairo_surface_get_type(csurf) == CAIRO_SURFACE_TYPE_WIN32_PRINTING)
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mForPrinting = true;
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Init(csurf, true);
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}
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void
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gfxWindowsSurface::InitWithDC(uint32_t flags)
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{
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if (flags & FLAG_IS_TRANSPARENT) {
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Init(cairo_win32_surface_create_with_alpha(mDC));
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} else {
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Init(cairo_win32_surface_create(mDC));
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}
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}
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already_AddRefed<gfxASurface>
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gfxWindowsSurface::CreateSimilarSurface(gfxContentType aContent,
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const gfxIntSize& aSize)
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{
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if (!mSurface || !mSurfaceValid) {
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return nullptr;
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}
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cairo_surface_t *surface;
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if (!mForPrinting && GetContentType() == gfxContentType::COLOR_ALPHA) {
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// When creating a similar surface to a transparent surface, ensure
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// the new surface uses a DIB. cairo_surface_create_similar won't
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// use a DIB for a gfxContentType::COLOR surface if this surface doesn't
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// have a DIB (e.g. if we're a transparent window surface). But
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// we need a DIB to perform well if the new surface is composited into
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// a surface that's the result of create_similar(gfxContentType::COLOR_ALPHA)
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// (e.g. a backbuffer for the window) --- that new surface *would*
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// have a DIB.
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surface =
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cairo_win32_surface_create_with_dib((cairo_format_t)(int)gfxPlatform::GetPlatform()->OptimalFormatForContent(aContent),
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aSize.width, aSize.height);
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} else {
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surface =
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cairo_surface_create_similar(mSurface, (cairo_content_t)(int)aContent,
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aSize.width, aSize.height);
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}
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if (cairo_surface_status(surface)) {
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cairo_surface_destroy(surface);
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return nullptr;
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}
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nsRefPtr<gfxASurface> result = Wrap(surface);
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cairo_surface_destroy(surface);
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return result.forget();
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}
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gfxWindowsSurface::~gfxWindowsSurface()
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{
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if (mOwnsDC) {
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if (mWnd)
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::ReleaseDC(mWnd, mDC);
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else
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::DeleteDC(mDC);
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}
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}
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HDC
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gfxWindowsSurface::GetDCWithClip(gfxContext *ctx)
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{
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return cairo_win32_get_dc_with_clip (ctx->GetCairo());
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}
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HDC
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gfxWindowsSurface::GetDC()
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{
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return cairo_win32_surface_get_dc (CairoSurface());
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}
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already_AddRefed<gfxImageSurface>
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gfxWindowsSurface::GetAsImageSurface()
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{
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if (!mSurfaceValid) {
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NS_WARNING ("GetImageSurface on an invalid (null) surface; who's calling this without checking for surface errors?");
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return nullptr;
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}
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NS_ASSERTION(CairoSurface() != nullptr, "CairoSurface() shouldn't be nullptr when mSurfaceValid is TRUE!");
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if (mForPrinting)
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return nullptr;
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cairo_surface_t *isurf = cairo_win32_surface_get_image(CairoSurface());
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if (!isurf)
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return nullptr;
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nsRefPtr<gfxImageSurface> result = gfxASurface::Wrap(isurf).downcast<gfxImageSurface>();
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result->SetOpaqueRect(GetOpaqueRect());
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return result.forget();
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}
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nsresult
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gfxWindowsSurface::BeginPrinting(const nsAString& aTitle,
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const nsAString& aPrintToFileName)
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{
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#ifdef NS_PRINTING
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#define DOC_TITLE_LENGTH (MAX_PATH-1)
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DOCINFOW docinfo;
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nsString titleStr(aTitle);
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if (titleStr.Length() > DOC_TITLE_LENGTH) {
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titleStr.SetLength(DOC_TITLE_LENGTH-3);
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titleStr.AppendLiteral("...");
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}
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nsString docName(aPrintToFileName);
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docinfo.cbSize = sizeof(docinfo);
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docinfo.lpszDocName = titleStr.Length() > 0 ? titleStr.get() : L"Mozilla Document";
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docinfo.lpszOutput = docName.Length() > 0 ? docName.get() : nullptr;
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docinfo.lpszDatatype = nullptr;
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docinfo.fwType = 0;
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::StartDocW(mDC, &docinfo);
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return NS_OK;
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#else
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return NS_ERROR_FAILURE;
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#endif
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}
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nsresult
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gfxWindowsSurface::EndPrinting()
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{
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#ifdef NS_PRINTING
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int result = ::EndDoc(mDC);
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if (result <= 0)
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return NS_ERROR_FAILURE;
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return NS_OK;
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#else
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return NS_ERROR_FAILURE;
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#endif
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}
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nsresult
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gfxWindowsSurface::AbortPrinting()
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{
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#ifdef NS_PRINTING
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int result = ::AbortDoc(mDC);
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if (result <= 0)
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return NS_ERROR_FAILURE;
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return NS_OK;
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#else
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return NS_ERROR_FAILURE;
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#endif
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}
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nsresult
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gfxWindowsSurface::BeginPage()
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{
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#ifdef NS_PRINTING
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int result = ::StartPage(mDC);
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if (result <= 0)
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return NS_ERROR_FAILURE;
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return NS_OK;
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#else
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return NS_ERROR_FAILURE;
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#endif
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}
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nsresult
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gfxWindowsSurface::EndPage()
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{
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#ifdef NS_PRINTING
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if (mForPrinting)
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cairo_surface_show_page(CairoSurface());
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int result = ::EndPage(mDC);
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if (result <= 0)
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return NS_ERROR_FAILURE;
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return NS_OK;
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#else
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return NS_ERROR_FAILURE;
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#endif
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}
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int32_t
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gfxWindowsSurface::GetDefaultContextFlags() const
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{
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if (mForPrinting)
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return gfxContext::FLAG_SIMPLIFY_OPERATORS |
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gfxContext::FLAG_DISABLE_SNAPPING |
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gfxContext::FLAG_DISABLE_COPY_BACKGROUND;
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return 0;
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}
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const gfxIntSize
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gfxWindowsSurface::GetSize() const
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{
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if (!mSurfaceValid) {
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NS_WARNING ("GetImageSurface on an invalid (null) surface; who's calling this without checking for surface errors?");
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return gfxIntSize(-1, -1);
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}
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NS_ASSERTION(mSurface != nullptr, "CairoSurface() shouldn't be nullptr when mSurfaceValid is TRUE!");
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return gfxIntSize(cairo_win32_surface_get_width(mSurface),
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cairo_win32_surface_get_height(mSurface));
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}
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gfxMemoryLocation
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gfxWindowsSurface::GetMemoryLocation() const
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{
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return gfxMemoryLocation::IN_PROCESS_NONHEAP;
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}
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