diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /widget/windows/WindowsEMF.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'widget/windows/WindowsEMF.cpp')
-rw-r--r-- | widget/windows/WindowsEMF.cpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/widget/windows/WindowsEMF.cpp b/widget/windows/WindowsEMF.cpp new file mode 100644 index 0000000000..71e3631bea --- /dev/null +++ b/widget/windows/WindowsEMF.cpp @@ -0,0 +1,94 @@ +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "WindowsEMF.h" + +namespace mozilla { +namespace widget { + +WindowsEMF::WindowsEMF() : mEmf(nullptr), mDC(nullptr) {} + +WindowsEMF::~WindowsEMF() { ReleaseAllResource(); } + +bool WindowsEMF::InitForDrawing(const wchar_t* aMetafilePath /* = nullptr */) { + ReleaseAllResource(); + + mDC = ::CreateEnhMetaFile(nullptr, aMetafilePath, nullptr, nullptr); + return !!mDC; +} + +bool WindowsEMF::InitFromFileContents(const wchar_t* aMetafilePath) { + MOZ_ASSERT(aMetafilePath); + ReleaseAllResource(); + + mEmf = ::GetEnhMetaFileW(aMetafilePath); + return !!mEmf; +} + +bool WindowsEMF::InitFromFileContents(LPBYTE aBytes, UINT aSize) { + MOZ_ASSERT(aBytes && aSize != 0); + ReleaseAllResource(); + + mEmf = SetEnhMetaFileBits(aSize, aBytes); + + return !!mEmf; +} + +bool WindowsEMF::FinishDocument() { + if (mDC) { + mEmf = ::CloseEnhMetaFile(mDC); + mDC = nullptr; + } + return !!mEmf; +} + +void WindowsEMF::ReleaseEMFHandle() { + if (mEmf) { + ::DeleteEnhMetaFile(mEmf); + mEmf = nullptr; + } +} + +void WindowsEMF::ReleaseAllResource() { + FinishDocument(); + ReleaseEMFHandle(); +} + +bool WindowsEMF::Playback(HDC aDeviceContext, const RECT& aRect) { + DebugOnly<bool> result = FinishDocument(); + MOZ_ASSERT(result, "This function should be used after InitXXX."); + + return ::PlayEnhMetaFile(aDeviceContext, mEmf, &aRect) != 0; +} + +bool WindowsEMF::SaveToFile() { + DebugOnly<bool> result = FinishDocument(); + MOZ_ASSERT(result, "This function should be used after InitXXX."); + + ReleaseEMFHandle(); + return true; +} + +UINT WindowsEMF::GetEMFContentSize() { + DebugOnly<bool> result = FinishDocument(); + MOZ_ASSERT(result, "This function should be used after InitXXX."); + + return GetEnhMetaFileBits(mEmf, 0, NULL); +} + +bool WindowsEMF::GetEMFContentBits(LPBYTE aBytes) { + DebugOnly<bool> result = FinishDocument(); + MOZ_ASSERT(result, "This function should be used after InitXXX."); + + UINT emfSize = GetEMFContentSize(); + if (GetEnhMetaFileBits(mEmf, emfSize, aBytes) != emfSize) { + return false; + } + + return true; +} + +} // namespace widget +} // namespace mozilla |