Files @ r23018:159fe34f39c1
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Location: cpp/openttd-patchpack/source/src/gui.h

Jindrich Makovicka
Codechange: Improve (un)zoom performance

When zooming out with a high res display, there can be about 150k sprites
to be sorted before displaying. With the O(n^2) complexity of the sprite
sorter, this can take several seconds.

This patch works around this by sorting the sprites by the xmin coordinate
first using QSort, which later allows an early bailout out of the inner
loop. This is enough to cut down the full unzoom time on a 4k display to a
fraction of second.
/* $Id$ */

/*
 * 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 gui.h GUI functions that shouldn't be here. */

#ifndef GUI_H
#define GUI_H

#include "vehicle_type.h"
#include "economy_type.h"
#include "tile_type.h"
#include "transport_type.h"
#include "story_type.h"
#include "company_type.h"

struct Window;

/* main_gui.cpp */
void HandleOnEditText(const char *str);
void InitializeGUI();

/* settings_gui.cpp */
void ShowGameOptions();
void ShowGameSettings();

/* train_gui.cpp */
void ShowOrdersWindow(const Vehicle *v);

/* dock_gui.cpp */
Window *ShowBuildDocksToolbar();
Window *ShowBuildDocksScenToolbar();

/* airport_gui.cpp */
Window *ShowBuildAirToolbar();

/* tgp_gui.cpp */
void ShowGenerateLandscape();
void ShowHeightmapLoad();

/* misc_gui.cpp */
void ShowLandInfo(TileIndex tile);
void ShowAboutWindow();
void ShowBuildTreesToolbar();
void ShowTownDirectory();
void ShowIndustryDirectory();
void ShowIndustryCargoesWindow();
void ShowSubsidiesList();
void ShowGoalsList(CompanyID company);
void ShowGoalQuestion(uint16 id, byte type, uint32 button_mask, const char *question);
void ShowStoryBook(CompanyID company, uint16 page_id = INVALID_STORY_PAGE);

void ShowEstimatedCostOrIncome(Money cost, int x, int y);

void ShowExtraViewPortWindow(TileIndex tile = INVALID_TILE);
void ShowExtraViewPortWindowForTileUnderCursor();

/* bridge_gui.cpp */
void ShowBuildBridgeWindow(TileIndex start, TileIndex end, TransportType transport_type, byte bridge_type);

void ShowBuildIndustryWindow();
void ShowFoundTownWindow();
void ShowMusicWindow();

#endif /* GUI_H */