Use `m_aCurrentDemoSelectionName` and `m_DemolistStorageType` for the demo render popup instead of using `m_DemolistSelectedIndex`, which can be invalid when the demo render popup is not opened from the demo browser.
Closes#7347.
The host lookup job and the engine interface are independent so they are moved to separate files.
The include of `engine.h` in `client.h` is therefore unnecessary and other includes also had to be adjusted because of this.
The variable `m_VersionServeraddr` is unused and therefore removed. The host lookup job is currently not used on the client-side.
Previously, the IME candidate window was aligned with the top-right corner of the text bounding box (when rendering the text until the caret offset). This does not work correctly for text spanning multiple lines, causing the IME candidate window to be displayed at the X position of the longest line instead. Additionally, text clipping in the chat was not considered, as `CLineInput` is not aware of the clipping implemented in `CChat`, causing the IME candidate window to be moved up too far.
This is fixed by getting the correct rendered position of the caret offset using `m_CursorRenderedPosition`. Vertical alignment is also changed so only one line of text is considered, which makes the behavior more consistent with Windows' native IME candidate window and avoids larger changes in `CLineInput` to make it aware of clipping.
Handle the return values of all uses of the `io_read`, `io_skip` and `io_tell` functions in `CDemoPlayer`, to handle truncated demo files and other unexpected file reading and seeking errors during demo playback.
Show more detailed error message popups when demos cannot be loaded due to errors and when demo playback is stopped unexpectedly due to errors. Previously, only a generic message "Error loading demo" was shown when loading failed and no error message was shown when demo playback is stopped due to errors.
Make the title of warnings adjustable, with the default title being "Warning" to preserve existing code.
Make auto-hiding configurable, so the automatic closing of warning popups after 10 seconds can be toggled.
The player info snapshot item (`CNetObj_PlayerInfo`) has its own `m_ClientID` member variable in addition to the generic snapshot item ID. The snapshot item ID was only used to set `m_Snap.m_LocalClientID` but without being checked for invalid values. Now it is checked that both IDs are identical and only `m_ClientID` is used consistently.
There is no reason to slice a demo while currently rendering it and it may cause issues because multiple demo players would access the same `IVideo` instance.
The filename editbox and buttons of the demo render popup were rendered excessively large on Android. While too small buttons could be an issue with smaller screens, this should not be implemented solely this popup, if Android support is revived in the future, as it makes the UI layout code harder to maintain.
The TODO in the `Dilate` function is removed, as the code already appears to be safe without additional checks. The variable `k` is at most `(w * h - 1) * BPP`, as `ix` and `iy` are clamped to maximum `w - 1` and `h - 1` respectively. Because `p < BPP - 1` the index `k + p` is therefore always valid for the buffers. (The caller must ensure that the source and destination buffers are of size `w * h * BPP`.)
