forked from mirrors/gecko-dev
126bd9e1a4
This patch was generated automatically by the "modeline.py" script, available here: https://github.com/amccreight/moz-source-tools/blob/master/modeline.py For every file that is modified in this patch, the changes are as follows: (1) The patch changes the file to use the exact C++ mode lines from the Mozilla coding style guide, available here: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Mode_Line (2) The patch deletes any blank lines between the mode line & the MPL boilerplate comment. (3) If the file previously had the mode lines and MPL boilerplate in a single contiguous C++ comment, then the patch splits them into separate C++ comments, to match the boilerplate in the coding style. MozReview-Commit-ID: 77D61xpSmIl --HG-- extra : rebase_source : c6162fa3cf539a07177a19838324bf368faa162b
87 lines
1.6 KiB
C++
87 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_gfx_AutoHelpersWin_h
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#define mozilla_gfx_AutoHelpersWin_h
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#include <windows.h>
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namespace mozilla {
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namespace gfx {
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// Get the global device context, and auto-release it on destruction.
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class AutoDC
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{
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public:
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AutoDC() {
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mDC = ::GetDC(nullptr);
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}
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~AutoDC() {
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::ReleaseDC(nullptr, mDC);
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}
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HDC GetDC() {
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return mDC;
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}
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private:
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HDC mDC;
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};
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// Select a font into the given DC, and auto-restore.
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class AutoSelectFont
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{
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public:
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AutoSelectFont(HDC aDC, LOGFONTW *aLogFont)
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: mOwnsFont(false)
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{
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mFont = ::CreateFontIndirectW(aLogFont);
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if (mFont) {
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mOwnsFont = true;
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mDC = aDC;
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mOldFont = (HFONT)::SelectObject(aDC, mFont);
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} else {
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mOldFont = nullptr;
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}
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}
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AutoSelectFont(HDC aDC, HFONT aFont)
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: mOwnsFont(false)
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{
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mDC = aDC;
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mFont = aFont;
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mOldFont = (HFONT)::SelectObject(aDC, aFont);
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}
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~AutoSelectFont() {
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if (mOldFont) {
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::SelectObject(mDC, mOldFont);
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if (mOwnsFont) {
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::DeleteObject(mFont);
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}
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}
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}
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bool IsValid() const {
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return mFont != nullptr;
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}
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HFONT GetFont() const {
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return mFont;
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}
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private:
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HDC mDC;
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HFONT mFont;
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HFONT mOldFont;
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bool mOwnsFont;
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};
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} // gfx
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} // mozilla
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#endif // mozilla_gfx_AutoHelpersWin_h
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