blob: d7ec5d186cb7896cb9a16336289b27eb33d1467b [file] [log] [blame]
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <stdint.h>
#include <memory>
#include "webrtc/modules/desktop_capture/rgba_color.h"
#include "webrtc/modules/desktop_capture/desktop_geometry.h"
namespace webrtc {
// A set of basic platform dependent functions to draw various shapes on the
// screen.
class ScreenDrawer {
// Creates a ScreenDrawer for the current platform, returns nullptr if no
// ScreenDrawer implementation available.
static std::unique_ptr<ScreenDrawer> Create();
ScreenDrawer() {}
virtual ~ScreenDrawer() {}
// Returns the region inside which DrawRectangle() function are expected to
// work, in capturer coordinates (assuming ScreenCapturer::SelectScreen has
// not been called). This region may exclude regions of the screen reserved by
// the OS for things like menu bars or app launchers.
virtual DesktopRect DrawableRegion() = 0;
// Draws a rectangle to cover |rect| with |color|. Note, rect.bottom() and
// rect.right() two lines are not included. The part of |rect| which is out of
// DrawableRegion() will be ignored.
virtual void DrawRectangle(DesktopRect rect, RgbaColor color) = 0;
// Clears all content on the screen by filling the area with black.
virtual void Clear() = 0;
// Blocks current thread until OS finishes previous DrawRectangle() actions.
// ScreenCapturer should be able to capture the changes after this function
// finish.
virtual void WaitForPendingDraws() = 0;
} // namespace webrtc