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123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 "mozilla/gfx/2D.h"
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#include "mozilla/gfx/HelpersCairo.h"
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#include "mozilla/gfx/Logging.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(HDC dc, uint32_t flags)
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: mOwnsDC(false), mDC(dc), mWnd(nullptr) {
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InitWithDC(flags);
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}
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void gfxWindowsSurface::MakeInvalid(mozilla::gfx::IntSize& size) {
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size = mozilla::gfx::IntSize(-1, -1);
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}
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gfxWindowsSurface::gfxWindowsSurface(const mozilla::gfx::IntSize& realSize,
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gfxImageFormat imageFormat)
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: mOwnsDC(false), mWnd(nullptr) {
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mozilla::gfx::IntSize size(realSize);
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if (!mozilla::gfx::Factory::CheckSurfaceSize(size)) MakeInvalid(size);
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cairo_format_t cformat = GfxFormatToCairoFormat(imageFormat);
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cairo_surface_t* surf =
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cairo_win32_surface_create_with_dib(cformat, 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(cairo_surface_t* csurf)
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: mOwnsDC(false), mWnd(nullptr) {
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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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MOZ_ASSERT(cairo_surface_get_type(csurf) !=
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CAIRO_SURFACE_TYPE_WIN32_PRINTING);
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Init(csurf, true);
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}
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void gfxWindowsSurface::InitWithDC(uint32_t flags) {
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if (flags & FLAG_IS_TRANSPARENT) {
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Init(cairo_win32_surface_create_with_format(mDC, CAIRO_FORMAT_ARGB32));
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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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gfxWindowsSurface::~gfxWindowsSurface() {
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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 gfxWindowsSurface::GetDC() {
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return cairo_win32_surface_get_dc(CairoSurface());
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}
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already_AddRefed<gfxImageSurface> gfxWindowsSurface::GetAsImageSurface() {
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if (!mSurfaceValid) {
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NS_WARNING(
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"GetImageSurface on an invalid (null) surface; who's calling this "
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"without checking for surface errors?");
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return nullptr;
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}
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NS_ASSERTION(
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CairoSurface() != nullptr,
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"CairoSurface() shouldn't be nullptr when mSurfaceValid is TRUE!");
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cairo_surface_t* isurf = cairo_win32_surface_get_image(CairoSurface());
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if (!isurf) return nullptr;
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RefPtr<gfxImageSurface> result =
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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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const mozilla::gfx::IntSize gfxWindowsSurface::GetSize() const {
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if (!mSurfaceValid) {
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NS_WARNING(
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"GetImageSurface on an invalid (null) surface; who's calling this "
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"without checking for surface errors?");
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return mozilla::gfx::IntSize(-1, -1);
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}
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NS_ASSERTION(
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mSurface != nullptr,
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"CairoSurface() shouldn't be nullptr when mSurfaceValid is TRUE!");
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int width, height;
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if (cairo_win32_surface_get_size(mSurface, &width, &height) !=
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CAIRO_STATUS_SUCCESS) {
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return mozilla::gfx::IntSize(-1, -1);
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}
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return mozilla::gfx::IntSize(width, height);
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}
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