The Platform::*Application::Configuration class was split into
Configuration and GLConfiguration, the latter containing only
GL-specific configuration. Moreover, createContext() and
tryCreateContext() were renamed to create() / tryCreate().
There's now a constructor and a create() / tryCreate() overload taking
GLConfiguration and this will be later extended with VkConfiguration,
for example. GL-specific getters/setters from Configuration are now
marked as deprecated and merged into GLConfiguration during context
creation.
Everything has still hard dependency on GL, that will be done in the
next commits.
The move away from `nullptr` to NoCreate for constructing an application
without creating OpenGL context was done quite some time ago for
windowless application, but for some weird reason it was never done for
windowed apps. Now made this consistent.
The old `nullptr`-based constructor is still present, but marked as
deprecated and due to be removed in some future release.
It was Resizeable on GLFW and Resizable on SDL2. As both APIs use
"resizable" as the flag name, I'm keeping it. The old enum value is now
an alias to the new one, is marked as deprecated and will be removed in
a future release.
The SDL2 variant works better than expected, however the GLFW variant
underdelivers -- no key names for modifier keys, the accent keys are not
UTF-8... I don't care ATM, will solve it once someone actually
complains.
The original implementation tried to mimic the behavior of GLUT, which
treats mouse wheel as a button. SDL2, GLFW and NaCl all treat scroll
event separately, so it was quite nastily hacked in, with horizontal
scrolling ignored and scrolling offset treated as cursor position.
Moreover, wheel up/down buttons were confused with extra mouse buttons
in SDL2.
Now there is a dedicated MouseScrollEvent, which has just the offset and
modifiers, no cursor position. The original way with WheelUp/WheelDown
buttons in mouse press event is still preserved, though it is marked as
deprecated and will be removed in future release. Sdl2Application had
WheelUp/WheelDown buttons also for mouse move event, which was
completely useless (try moving a mouse while the wheel is rotating, ha),
so it's removed.
Scroll event offset is now also consistently Vector2 across all toolkits
-- it was integer in SDL2, float in NaCl and double in GLFW.
The X1 and X2 buttons in Sdl2Application are not confused with wheel
up/down anymore and are a new Mouse*Event::Button::X1 and
Mouse*Event::Button::X2 enums -- on my mouse they are actually wheel
left and wheel right (though wheel left and wheel right is not treated
as horizontal scrolling, weird).
Vladimír Vondruš