Corentin Noël authored May 14, 2020 and Corentin Noël committed May 15, 2020

This allows to slightly improve the efficiency of each MapSource as downloading a tile from the internet is not the same as doing it from memory or from the filesystem.
Make the ShumateErrorTileSource render the tile for now.

Corentin Noël authored May 13, 2020 and Corentin Noël committed May 15, 2020

Because the ShumateNullTileSource only exists for this.

Corentin Noël authored May 13, 2020 and Corentin Noël committed May 15, 2020

This allows Gtk to take care of the rendering of the texture by itself and perform optimisations when necessary.

Modernise the codebase

See merge request mlundblad/libshumate!4

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DECLARE_INTERFACE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE and G_DECLARE_FINAL_TYPE as there is no point subclassing it.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE and G_DECLARE_FINAL_TYPE as there is no point subclassing it.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE and G_DECLARE_FINAL_TYPE as there is no point subclassing it.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_BOXED_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Use G_DEFINE_TYPE_WITH_PRIVATE and G_DECLARE_*_TYPE.

Fix some warnings and unbreak the build

See merge request mlundblad/libshumate!3

meson: Fix gtk4 dependency

See merge request mlundblad/libshumate!2

This won't work in GTK 4, so let's comment them to unbreak the build.

`GTimeVal` will overflow in 2038, so it's deprecated. Fix these warnings
by using `GDateTime` (which has a nicer API anyway).

Doesn't do anything really, so replace with `const` to have 2 warnings
less.