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r25014:e1f1bf3a062e 2.3 KiB text/x-c Show Annotation Show as Raw Download as Raw

Patric Stout

Add: [Video] move GameLoop into its own thread

This allows drawing to happen while the GameLoop is doing an
iteration too.

Sadly, not much drawing currently can be done while the GameLoop
is running, as for example PollEvent() or UpdateWindows() can
influence the game-state. As such, they first need to acquire a
lock on the game-state before they can be called.

Currently, the main advantage is the time spend in Paint(), which
for non-OpenGL drivers can be a few milliseconds. For OpenGL this
is more like 0.05 milliseconds; in these instances this change
doesn't add any benefits for now.

This is an alternative to the former "draw-thread", which moved
the drawing in a thread for some OSes. It has similar performance
gain as this does, although this implementation allows for more
finer control over what suffers when the GameLoop takes too
long: drawing or the next GameLoop. For now they both suffer
equally.

/*
 * 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 textfile_gui.h GUI functions related to textfiles. */

#ifndef TEXTFILE_GUI_H
#define TEXTFILE_GUI_H

#include "fileio_type.h"
#include "strings_func.h"
#include "textfile_type.h"
#include "window_gui.h"

const char *GetTextfile(TextfileType type, Subdirectory dir, const char *filename);

/** Window for displaying a textfile */
struct TextfileWindow : public Window, MissingGlyphSearcher {
	TextfileType file_type;          ///< Type of textfile to view.
	Scrollbar *vscroll;              ///< Vertical scrollbar.
	Scrollbar *hscroll;              ///< Horizontal scrollbar.
	char *text;                      ///< Lines of text from the NewGRF's textfile.
	std::vector<const char *> lines; ///< #text, split into lines in a table with lines.
	uint search_iterator;            ///< Iterator for the font check search.

	static const int TOP_SPACING    = WD_FRAMETEXT_TOP;    ///< Additional spacing at the top of the #WID_TF_BACKGROUND widget.
	static const int BOTTOM_SPACING = WD_FRAMETEXT_BOTTOM; ///< Additional spacing at the bottom of the #WID_TF_BACKGROUND widget.

	TextfileWindow(TextfileType file_type);
	~TextfileWindow();

	void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize) override;
	void OnClick(Point pt, int widget, int click_count) override;
	void DrawWidget(const Rect &r, int widget) const override;
	void OnResize() override;

	void Reset() override;
	FontSize DefaultSize() override;
	const char *NextString() override;
	bool Monospace() override;
	void SetFontNames(FreeTypeSettings *settings, const char *font_name, const void *os_data) override;

	virtual void LoadTextfile(const char *textfile, Subdirectory dir);

private:
	uint GetContentHeight();
	void SetupScrollbars();
};

#endif /* TEXTFILE_GUI_H */