This removes all functions related to:
* GUI1 font formatting
* GUI1 font rendering
* Manual text surface size calculations
* The font description interface. While it wasn't exclusive to the TTF rendering system,
it was unused by Pango/Cairo rendering.
A huge chunk of the help browser code was commented out since we don't have font::line_width anymore.
Likewise, a hack was added to the GUI2 text box since we don't have have get_max_height anymore.
font::is_cjk_char was retained (as well as some related helpers) since they might be useful
later.
I'll leave it to someone else to update the CMake/Scons files to remove TTF as a build
dependency.
Previously, I had implemented the hint text ("Search)" and image (the magnifying glass)
as a custom text box definition. This caused some problems, though. Since the string was
hard-coded as part of a WFL formula, it couldn't be translated (see #2709 and #2732). It
also wasn't expandable to any other usecase.
Instead, I've added two new hint_text= and hint_image= keys to [text_box], wrapped the
"Search" text and magnifying image path in a helper macro, and refactored the default
definition to display the hint text and image when appropriate.
This also fixes a minor issue where selected text wouldn't remain highlighted when the
box wasn't focused when using the filter definition (it did with the default one).
This should fix the untranslatable "Search" text issue mentioned in both issues above.
The new string is in the wesnoth-lib textdomain.
Resolves#2748.
Essentially, all this did was tell users to go use the forum, so it wasn't worth
it to keep it and solve the infinite loading screen issues it was causing.
The server backend still needs to be cleaned up.
Also removed a dead reference to some "Change Username" button in the Login dialog's
code.
I decided to go with a modular approach, where both in-game and editor UI dialogs inherit
from a single base class, a pointer of which is owned by the display class. That can be
used for common functionality that needs be shared by all in-game dialogs.
Right now the new UI is just static. It works with most stuff, but not key presses. Working
on that...
The old floating textbox was extremely entwined with the controller_base, play_controller, and menu_handler
classes. controller_base::have_keyboard_focus essentially controlled whether some events were executed based
on whether the floating textbox was open or not. Additionally, those events weren't even reached if a UI dialog
was open at all.
The new design features a singleton console class that can be called from anywhere, not just the game. I've also
decoupled the execution object from play_controller. The relevant functions in menu_handler are now passed to
the console as callbacks.
To work around map events such as clicking not being available if the console was open, I removed the exclusionary
is-in-dialog check from controller_base::handle_event and instead exit early out certain types of events using
controller_base::have_keyboard_focus. As mentioned in the accompanying comment, this isn't the best solution, but
it will do for now.
The new console also isn't fully feature-comparable with the old GUI1 one. The following are still missing:
* The checkbox, for use when sending messages.
* Tab completion.
* A crash occurs when existing the app if a game was exited with the console open.
I'm leaving the old floating_textbox code around for now for reference.
Originally was going to do this as workaround for the background tiling over the borders,
but I fixed the root cause of that instead. Still, this just makes more sense.
This entirely refactors surface blitting out of the canvas. Instead, each canvas owns a texture. This texture
is completely redrawn any time the canvas if marked dirty, else the result is cached and drawn to the screen
each draw cycle.
All windows are now redrawn every draw cycle. The use of the cached canvas textures means there's no noticeable
performance difference (likely a performance gain, actually) from using surface blitting.
There's still some code to clean up and a few things to fix.
* Added textdomain closure missing from 267510ea07
* Avoid use of invalidate_layout by having an em dash in the size field prior to
saving. That's needed since GUI2 doesn't expand the label's canvas if its text
is initially empty.
* Use a better button definition for the View button.
* Grouped Save and Close buttons together
I'm going to merge this, possibly for git-illiteracy reasons, but if this causes problems, it doesn't have to permanently taint the stable branch. We can fix it later.
