(svn r7638) -Codechange: Remove special window ShowJoinStatusWindowAfterJoin and shuffle around
some code for SetupColorsAndInitialWindow. Because we know that after a successful
load all windows are removed we can setup default windows in this function, and
show ShowJoinStatusWindow in PACKET_SERVER_MAP.
-Setup the global _network_join_status for ShowJoinStatusWindow in the only two
places where the function is called, instead of inside it.
-Turn the join status window into a modal window of the network window so it
stays on top.

(svn r7637) -Codechange: Change ShowQueryString to use a window pointer as a parent. If the
query has no parent (eg give money, rename waypoint), the global function
HandleOnEditText is used.

(svn r7616) -Cleanup:
-(re)set _rename_[id/what] to -1 to catch invalid calls (main_gui.c)
-Only invalidate widget of pause/ff instead of whole window (main_gui.c)
-Remove numbering from WE_ and WC_ as it's not needed, also remove
non-existing windowclasses (window.h, openttd.h)
-Give names to some of the enums (window.h)
-In UninitWindowSystem not only free malloc'd widgets, but also reset the z-array (window.c)
-Some coding style, comments, etc.

(svn r7523) -Feature: Add the possibility to change the newgrf configuration of a running game.
This is only possible in SP (or in the intro menu). During game play you will
get a confirmation window when applying the changes as some actions can crash
OpenTTD and/or make your current game unplayable.

(svn r7198) -Codechange: Implement a circular tile search function.
Just provide the number of tiles per side, a pointer to a test function, the tile to start searching and voila.
Fixes [FS#364] by removing a lengthy and suboptimal random search pattern.
Thanks Rubidium.

(svn r7195) -Feature: [FS#297, optional elrails] New patches/vehicles option 'disable electrified railways'.
(original patch by maedhros, ideas: peter1138, Darkvater, Rubidium, Patrick, Eddi|zuHause, ..)

(svn r7179) -Codechange (r7173): Actually "prefer" team chat through the patch setting instead of
always sending to teammate if the patch is on even if you do not have any allies. So
with setting off you always send to 'all players', with setting on you send to teammates
if you have any, otherwise to all players.

(svn r7120) -Fix (r6631): A town size of 0 in the scenario editor is a random size. So to get a size
you need it between 1 and 3 and therefore there is no one-on-one correspondence between
widget-numbers and town-size. Based on a patch by Maedhros

(svn r7098) -Regression (r7094): Zoom buttons were not properly updated with a new/loaded game. The
good thing is, we got rid of even more magic code (tm)

(svn r7095) -Codechange: Move MaxZoomIn function to viewport.h and change it to MaxZoomInOut
with a zoom parameter and a pointer to the window which's viewport we want to zoom.

(svn r7094) -Codechange: Get rid of the window-specific code in DoZoomInOutWindow (enable, disable
buttons depending on calling window, game-mode); handle it by broadcasting messages
to the calling window, because that knows how and what buttons to set.

(svn r7093) -Codechange: Move DoZoomInOutWindow declaration to viewport.h and rewrite the function
a bit more sensibly.

(svn r7023) -Fix: Pressing F1 in scenario editor did not work because the keypress event was sent
twice. due to e->we.keypress.cont not being set to false. Also indent the switch
statements for some coding style bonus points.

(svn r7022) -Fix [FS#292]: Properly guard against viewing company-sensitive information from
invalid players (eg spectators) which could lead to crashes.

(svn r7000) -Fix: Incorrect use of e->we.click when the event is a 'place'. This didn't cause any
bugs so far because the 'click' element was at the same position in the union for both
events.

(svn r6930) -Codechange: Move industry name into IndustrySpec
-Codechange: member color_map is more related to random color, rename it as such

(svn r6925) -Codechange: Be more strict with widget distinctions. WWT_PANEL is only plain panel,
WWT_IMGBTN must contain an image for drawing. Renamed WWT_PANEL_2 to WWT_IMGBTN_2
because that is what it is. Added WWT_PUSHBTN that is either just a pushable button,
or a textbutton, which text's drawn dynamically independent of widget.

(svn r6884) -Codechange: Add strict bounds checking in string formatting system.
The last parameter should point to the end of the buffer (eg lastof(buf))
Courtesy of Tron.

(svn r6824) -Feature: Change the functionality of the chat window. SHIFT+ENTER (SHIFT+T)
sends a message to all players, CTRL+ENTER (CTRL+T) sends a message to all
team mates and ENTER (T) sends a message to teammates if you have any, otherwise
to all players.
The chat-window now also shows what kind of message is being sent. Shortcut
functionality has not been changed (ENTER sends message, ESC closes window)

(svn r6774) -Codechange: Rename the badly named OWNER_SPECTATOR to PLAYER_SPECTATOR and
put it into player.h where it belongs (instead of map.h)

(svn r6754) -Codechange: Remove some #idef ENABLE_NETWORK specific defines. With networking
disabled hardcode _networking/_network_available to zero and let the compiler
handle all optimizations.

(svn r6746) -Codechange: Remove the need for double strings in "checkmarked" items. While
here have a little go at the MenuWndProc() function for a little cleanup.

(svn r6745) -Codechange: Have the dropdown menus fall fully inside the top toolbar. So
normally they will start at the left side of the parent button except when
they would stick out, then align with the top toolbar's right side. This
also means the extra parameter 'x' is not needed, it is deducted from the
widget position.

(svn r6744) -Fix: Determine the length of the main toolbar dropdown list based
on the length of the strings in that list.

(svn r6660) -Fix(r6631): Prevent the fast-foward button to toggle up and down when pressing shift.
The _fastforward and _pause bool are not exactly used as bool.
So, when doing test with them, amek it so that the will appear as such

(svn r6631) -Codechange: Use accessors for click_state.
Another step toward merging XTDwidget.
The only two files not converted (window.h and widget.c) will be done at the very last commit)

(svn r6619) -Codechange: Use accessors for disabled_state.
Another step toward merging XTDwidget.
The only two files not converted (window.h and widget.c) will be done at the very last commit)

(svn r6562) -Codechange: merged the vehicle list window widget arrays
It made no sense to maintain 8 nearly identically arrays when a single one can do the job
Also made the two buttons always use half of the bottom width each, even when resizing

(svn r6380) -Codechange: unify all ways to quit OTTD.
This means that in the intro menu the 'Quit' button immediatelly quits
and the 'Quit' in the menu of the normal game and scenario editor
immediatelly quits when the 'autosave_on_exit' patch is turned on.
This is the same way as the OS/window manager initiated quits, like
alt-F4 and the 'x' in the (OS/window manager drawn) title bar of OTTD.

(svn r6222) Remove struct ColorList, because the names of its attributes are plain confusing
All the struct holds is a simple colour gradient, so using a simple array with 8 entries is more clear
Also add the names of colour the gradients as enum

(svn r6047) -Codechange: FOR_ALL now _only_ loops valid items, and skips invalid ones
-Codechange: use IsValidXXX where ever possible
Note: both changes to prepare for new pool system, which needs those changes.
For every pool there are 2 ugly lines, which will be removed when done
implementing new pool system.
Based on FS#13 by blathijs, partly implemented.

(svn r6046) CodeChange : Rename WWT_5 Widget type to WWT_LABEL : a centered label
CodeChange : Move almost all fixed strings from ON_PAINT event to Widget array using WWT_LABEL.
Feature : All "Select Refit Cargo" are now centered, instead of been left aligned

(svn r6038) -Codechange: move mousewheel code to event WE_MOUSEWHEEL instead of a general function that handles that
-Codechange: use always 'e' for WindowsEvent, neverr 'we'

(svn r5946) -Add: merged the TGP branch to mainline. TGP adds:
- New optional landscape generator (TerraGenesis Perlin)
- Load heightmaps (either BMP or PNG)
- Progress dialog while generating worlds (no longer a 'hanging' screen)
- New dialogs for NewGame, Create Scenario and Play Heightmap
- Easier to configure your landscape
- More things to configure (tree-placer, ..)
- Speedup of world generation
- New console command 'restart': restart the map EXACTLY as it was when you
first started it (needs a game made after or with this commit)
- New console command 'getseed': get the seed of your map and share it with
others (of course only works with generated maps)
- Many new, world generation related, things
- Many internal cleanups and rewrites
Many tnx to those people who helped making this:
Belugas, DaleStan, glx, KUDr, RichK67, Rubidium, and TrueLight (alfabetic)
Many tnx to those who helped testing:
Arnau, Bjarni, and tokai (alfabetic)
And to all other people who helped testing and sending comments / bugs
Stats: 673 lines changed, 3534 new lines, 79 new strings

(svn r5944) -Merge TGP (r5578, r5579, r5724, r5726): -Feature: filter for textboxes to only
allow certain patterns (like numbers only)

(svn r5918) -Cleanup: rename ConvertDayToYMD/ConvertYMDToDay as they really convert a Date to/from a YearMonthDay.
-Cleanup: swap ConvertDateToYMD's parameters to make the order consistent with the name of the function.

(svn r5887) -Cleanup: move date related functions, defines and variables to date.[ch]
-Cleanup: fix whitespace related coding style issues in date.[ch]
-Cleanup: make original comments doxygen compatible and remove/change outdated comments

(svn r5626) CodeChange : Remove the global _make_screenshot and implement a more flexible mechanism
Simplification of the handling of the main_gui menus,
Removal of repetitions and Hiding the internals of screenshots.
Thanks to glx, Rubidium and Truelight for pointers

(svn r5226) Reduce the mess that sending chat messages is
This also fixes a bug:
-Fix: It was possible to rename a signs or waypoints with the chat box

(svn r4591) -Fix (FS#122) Game no longer errors out when "Many random towns" is selected in the scenario editor.
-Side effects:
- Removed one global variable from variables.h
- Remove an ugly hack for the "many random towns" function

(svn r3376) -Codechange: made enums for GenerateWorld and InitializeGame 'mode'
-Fix: [ FS#30 ] don't reset date in SE when pressing RandomLand (rewrote patch of MeusH, but Peter warned me I should put his name in, so... oh well)

(svn r3218) -Feature: Multiheaded train engines will now stay in the same train
This means that any user attempt to remove a rear engine will tell the user to move the front engine instead
This fixes the assert when moving multiheaded engines (introduced in r3144)
Note: to make old savegames use this feature, some engines might be turned around in order to link engines in pairs

-Codechange: train subtype is now a bitmask
This allows fast access to info like if it is a wagon or engine and if it is in front and so on
Note: savegame version bump

(svn r3181) -Bracing
-Indentation
-Whitespace
-DeMorgan's Law
-Test with NULL or 0 for non-booleans
-'\0' instead of 0 for chars
-Remove redundantly redundant comments (like DoFoo(); // Do foo)
-Join multiple short lines with a single statement
-Split single lines with multiple statements
-Avoid assignments in if

(svn r3173) Use the trinary operator and switch to improve readability
Also align short cases nicely

(svn r3081) -Codechange: [autoreplace] complete rewrite of autoreplace
this is a complete rewrite, that makes use of existing commands like build and sell
this means that multiheaded train engines are replaced correctly

(svn r3078) Some more stuff, which piled up:
- const, whitespace, indentation, bracing, GB/SB, pointless casts
- use the trinary operator where appropriate
- data types (uint[] -> AcceptedCargo, ...)
- if cascade -> switch
- if (ptr) -> if (ptr != NULL)
- DeMorgan's Law
- Fix some comments
- 0 -> '\0', change magic numbers to symbolic constants

(svn r3077) static, const, bracing, indentation, 0 -> '\0'/NULL, typos in comments, excess empty lines, minor other changes
nothing spectacular, just some stuff, which piled up