64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_DESKTOP_CAPTURE_LINUX_X_WINDOW_PROPERTY_H_
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#define MODULES_DESKTOP_CAPTURE_LINUX_X_WINDOW_PROPERTY_H_
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#include <X11/X.h>
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#include <X11/Xlib.h>
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#include "rtc_base/constructor_magic.h"
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namespace webrtc {
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class XWindowPropertyBase {
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public:
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XWindowPropertyBase(Display* display,
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Window window,
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Atom property,
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int expected_size);
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virtual ~XWindowPropertyBase();
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// True if we got properly value successfully.
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bool is_valid() const { return is_valid_; }
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// Size and value of the property.
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size_t size() const { return size_; }
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protected:
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unsigned char* data_ = nullptr;
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private:
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bool is_valid_ = false;
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unsigned long size_ = 0; // NOLINT: type required by XGetWindowProperty
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RTC_DISALLOW_COPY_AND_ASSIGN(XWindowPropertyBase);
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};
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// Convenience wrapper for XGetWindowProperty() results.
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template <class PropertyType>
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class XWindowProperty : public XWindowPropertyBase {
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public:
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XWindowProperty(Display* display, const Window window, const Atom property)
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: XWindowPropertyBase(display, window, property, sizeof(PropertyType)) {}
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~XWindowProperty() override = default;
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const PropertyType* data() const {
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return reinterpret_cast<PropertyType*>(data_);
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}
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PropertyType* data() { return reinterpret_cast<PropertyType*>(data_); }
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RTC_DISALLOW_COPY_AND_ASSIGN(XWindowProperty);
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};
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} // namespace webrtc
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#endif // MODULES_DESKTOP_CAPTURE_LINUX_X_WINDOW_PROPERTY_H_
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