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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/2d/AutoHelpersWin.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/2d/AutoHelpersWin.h')
-rw-r--r--gfx/2d/AutoHelpersWin.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/gfx/2d/AutoHelpersWin.h b/gfx/2d/AutoHelpersWin.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_gfx_AutoHelpersWin_h
+#define mozilla_gfx_AutoHelpersWin_h
+
+#include <windows.h>
+
+namespace mozilla {
+namespace gfx {
+
+// Get the global device context, and auto-release it on destruction.
+class AutoDC {
+ public:
+ AutoDC() { mDC = ::GetDC(nullptr); }
+
+ ~AutoDC() { ::ReleaseDC(nullptr, mDC); }
+
+ HDC GetDC() { return mDC; }
+
+ private:
+ HDC mDC;
+};
+
+// Select a font into the given DC, and auto-restore.
+class AutoSelectFont {
+ public:
+ AutoSelectFont(HDC aDC, LOGFONTW* aLogFont) : mOwnsFont(false) {
+ mFont = ::CreateFontIndirectW(aLogFont);
+ if (mFont) {
+ mOwnsFont = true;
+ mDC = aDC;
+ mOldFont = (HFONT)::SelectObject(aDC, mFont);
+ } else {
+ mOldFont = nullptr;
+ }
+ }
+
+ AutoSelectFont(HDC aDC, HFONT aFont) : mOwnsFont(false) {
+ mDC = aDC;
+ mFont = aFont;
+ mOldFont = (HFONT)::SelectObject(aDC, aFont);
+ }
+
+ ~AutoSelectFont() {
+ if (mOldFont) {
+ ::SelectObject(mDC, mOldFont);
+ if (mOwnsFont) {
+ ::DeleteObject(mFont);
+ }
+ }
+ }
+
+ bool IsValid() const { return mFont != nullptr; }
+
+ HFONT GetFont() const { return mFont; }
+
+ private:
+ HDC mDC;
+ HFONT mFont;
+ HFONT mOldFont;
+ bool mOwnsFont;
+};
+
+} // namespace gfx
+} // namespace mozilla
+
+#endif // mozilla_gfx_AutoHelpersWin_h