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/* Screen.h
Copyright (c) 2014 by Michael Zahniser
Endless Sky is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.
Endless Sky is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include "Point.h"
// Class that simply holds the screen dimensions. This is really just a wrapper
// around some global variables, which means that no one but the drawing thread
// is allowed to use it.
class Screen {
public:
// Use RAII to define the scope of a temporary screen size change.
class ScreenDimensionsGuard final
{
public:
// Constructor that changes the screen size on creation.
ScreenDimensionsGuard(int width, int height);
// Destructor, which restores the expected screen size.
~ScreenDimensionsGuard();
// Restore the screen settings.
void Deactivate();
private:
bool valid = false;
int oldWidth = 0;
int oldHeight = 0;
};
public:
static void SetRaw(int width, int height);
// Zoom level as specified by the user.
static int UserZoom();
// Effective zoom level, as restricted by the current resolution / window size.
static int Zoom();
static void SetZoom(int percent);
// Specify that this is a high-DPI window.
static void SetHighDPI(bool isHighDPI = true);
// This is true if the screen is high DPI, or if the zoom is above 100%.
static bool IsHighResolution();
static Point Dimensions();
static int Width();
static int Height();
static int RawWidth();
static int RawHeight();
// Get the positions of the edges and corners of the viewport.
static int Left();
static int Top();
static int Right();
static int Bottom();
static Point TopLeft();
static Point TopRight();
static Point BottomLeft();
static Point BottomRight();
};
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