Files @ r24797:588223e116f1
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Location: cpp/openttd-patchpack/source/src/video/win32_v.h

Michael Lutz
Add: [Win32] Automatic zoom level suggestion for Win32 video driver.

The zoom level suggestion is based on the DPI scaling set in Windows.
We use 150% scaling as the threshold for 2X zoom and 300% scaling
as the threshold for 4X zoom.
/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file win32_v.h Base of the Windows video driver. */

#ifndef VIDEO_WIN32_H
#define VIDEO_WIN32_H

#include "video_driver.hpp"

/** The video driver for windows. */
class VideoDriver_Win32 : public VideoDriver {
public:
	const char *Start(const StringList &param) override;

	void Stop() override;

	void MakeDirty(int left, int top, int width, int height) override;

	void MainLoop() override;

	bool ChangeResolution(int w, int h) override;

	bool ToggleFullscreen(bool fullscreen) override;

	bool AfterBlitterChange() override;

	void AcquireBlitterLock() override;

	void ReleaseBlitterLock() override;

	bool ClaimMousePointer() override;

	void EditBoxLostFocus() override;

	const char *GetName() const override { return "win32"; }

	bool MakeWindow(bool full_screen);

protected:
	Dimension GetScreenSize() const override;

	float GetDPIScale() override;
};

/** The factory for Windows' video driver. */
class FVideoDriver_Win32 : public DriverFactoryBase {
public:
	FVideoDriver_Win32() : DriverFactoryBase(Driver::DT_VIDEO, 10, "win32", "Win32 GDI Video Driver") {}
	Driver *CreateInstance() const override { return new VideoDriver_Win32(); }
};

#endif /* VIDEO_WIN32_H */