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 /gfx/thebes/DisplayConfigWindows.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/thebes/DisplayConfigWindows.cpp')
-rw-r--r-- | gfx/thebes/DisplayConfigWindows.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/gfx/thebes/DisplayConfigWindows.cpp b/gfx/thebes/DisplayConfigWindows.cpp new file mode 100644 index 0000000000..f9696a4070 --- /dev/null +++ b/gfx/thebes/DisplayConfigWindows.cpp @@ -0,0 +1,92 @@ +/* -*- 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 <iostream> +#include <windows.h> + +#include "DisplayConfigWindows.h" + +namespace mozilla { +namespace gfx { + +using namespace std; + +optional<DisplayConfig> GetDisplayConfig() { + LONG result; + + UINT32 numPaths; + UINT32 numModes; + vector<DISPLAYCONFIG_PATH_INFO> paths; + vector<DISPLAYCONFIG_MODE_INFO> modes; + do { + result = GetDisplayConfigBufferSizes(QDC_ONLY_ACTIVE_PATHS, &numPaths, + &numModes); + if (result != ERROR_SUCCESS) { + return {}; + } + // allocate the recommended amount of space + paths.resize(numPaths); + modes.resize(numModes); + + result = QueryDisplayConfig(QDC_ONLY_ACTIVE_PATHS, &numPaths, paths.data(), + &numModes, modes.data(), NULL); + // try again if there wasn't enough space + } while (result == ERROR_INSUFFICIENT_BUFFER); + + if (result != ERROR_SUCCESS) return {}; + + // shrink to fit the actual number of modes and paths returned + modes.resize(numModes); + paths.resize(numPaths); + + return DisplayConfig{paths, modes}; +} + +bool HasScaledResolution() { + auto config = GetDisplayConfig(); + if (config) { + for (auto& path : config->mPaths) { + auto& modes = config->mModes; + int targetModeIndex = path.targetInfo.modeInfoIdx; + int sourceModeIndex = path.sourceInfo.modeInfoIdx; + + // Check if the source and target resolutions are different + if ((modes[targetModeIndex] + .targetMode.targetVideoSignalInfo.activeSize.cx != + modes[sourceModeIndex].sourceMode.width) || + (modes[targetModeIndex] + .targetMode.targetVideoSignalInfo.activeSize.cy != + modes[sourceModeIndex].sourceMode.height)) { + return true; + } + } + } + return false; +} + +void GetScaledResolutions(ScaledResolutionSet& aRv) { + auto config = GetDisplayConfig(); + if (config) { + for (auto& path : config->mPaths) { + auto& modes = config->mModes; + int targetModeIndex = path.targetInfo.modeInfoIdx; + int sourceModeIndex = path.sourceInfo.modeInfoIdx; + + // Check if the source and target resolutions are different + IntSize src(modes[sourceModeIndex].sourceMode.width, + modes[sourceModeIndex].sourceMode.height); + IntSize dst( + modes[targetModeIndex].targetMode.targetVideoSignalInfo.activeSize.cx, + modes[targetModeIndex] + .targetMode.targetVideoSignalInfo.activeSize.cy); + if (src != dst) { + aRv.AppendElement(std::pair<IntSize, IntSize>{src, dst}); + } + } + } +} + +} // namespace gfx +} // namespace mozilla |