Position and scale the content "manually" instead of relying on the
renderer "logical size".
This avoids possible rounding differences between the computed window
size and the content size, causing one row or column of black pixels on
the bottom or on the right.
This will also enable to draw items at their expected size on the screen
(unscaled).
The window dimensions are integers, so resizing to fit the content may
not be exact.
When computing the optimal size, it could cause to reduce alternatively
the width and height by few pixels, making the "optimal size" unstable.
To avoid this problem, check if the optimal size is already correct
either by keeping the width or the height.
Move the window-to-frame coordinates conversion from the input manager
to the screen.
This will allow to apply more screen-related transformations without
impacting the input manager.
Add Ctrl+Left and Ctrl+Right shortcuts to rotate the display (the
content of the scrcpy window).
Contrary to --lock-video-orientation, the rotation has no impact on
recording, and can be changed dynamically (and immediately).
Fixes#218 <https://github.com/Genymobile/scrcpy/issues/218>
Now, get_window_size() returns the current window size (fullscreen or
not), while get_windowed_window_size() always returned the windowed size
(the size when fullscreen is disabled).
The SDL video subsystem is not necessary if we don't display the video.
Move the sdl_init_and_configure() function from screen.c to scrcpy.c,
because it is not only related to the screen display.
Limit source code to 80 chars, and declare functions return type and
modifiers on a separate line.
This allows to avoid very long lines, and all function names are
aligned.
(We do this on VLC, and I like it.)
It is very convenient when I play mobile game and watch video at the
same time.
Tested on Linux mint Cinnamon as well as Windows 10.
Signed-off-by: Yu-Chen Lin <npes87184@gmail.com>
SDL_CreateTexture() is called both during initialization and on frame
size change.
To avoid inconsistent changes to arguments value, factorize them to a
single function create_texture().
The High DPI support is enabled by default, so that the renderer use the
full definition of High DPI screens.
However, there are still mouse coordinates problems on some MacOS having
High DPI support (but not all), so expose a way to disable it.
Use high DPI if available.
Note that on Mac OS X, setting this flag is not sufficient:
> On Apple's OS X you must set the NSHighResolutionCapable Info.plist
> property to YES, otherwise you will not receive a High DPI OpenGL
> display.
<https://wiki.libsdl.org/SDL_CreateWindow#flags>
screen_render() should not be called on initialization:
1. it is useless, since the window is hidden until the first frame;
2. it writes an empty texture (probably green) to the renderer.
