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Added SDL_GetDisplayOrientation() to get the display orientation, and added a new event SDL_DISPLAYEVENT to notify the application when the orientation changes.

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Documented the values returned by the accelerometer and gyroscope sensors
This commit is contained in:
Sam Lantinga 2018-08-22 21:48:28 -07:00
parent e1853645b8
commit f69485f745
14 changed files with 290 additions and 25 deletions
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51
include/SDL_video.h
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@ -169,6 +169,24 @@ typedef enum
SDL_WINDOWEVENT_HIT_TEST /**< Window had a hit test that wasn't SDL_HITTEST_NORMAL. */
} SDL_WindowEventID;
/**
* \brief Event subtype for display events
*/
typedef enum
{
SDL_DISPLAYEVENT_NONE, /**< Never used */
SDL_DISPLAYEVENT_ORIENTATION, /**< Display orientation has changed to data1 */
} SDL_DisplayEventID;
typedef enum
{
SDL_ORIENTATION_UNKNOWN, /**< The display orientation can't be determined */
SDL_ORIENTATION_LANDSCAPE, /**< The display is in landscape mode, with the right side up, relative to portrait mode */
SDL_ORIENTATION_LANDSCAPE_FLIPPED, /**< The display is in landscape mode, with the left side up, relative to portrait mode */
SDL_ORIENTATION_PORTRAIT, /**< The display is in portrait mode */
SDL_ORIENTATION_PORTRAIT_FLIPPED, /**< The display is in portrait mode, upside down */
} SDL_DisplayOrientation;
/**
* \brief An opaque handle to an OpenGL context.
*/
@ -316,18 +334,6 @@ extern DECLSPEC const char * SDLCALL SDL_GetDisplayName(int displayIndex);
*/
extern DECLSPEC int SDLCALL SDL_GetDisplayBounds(int displayIndex, SDL_Rect * rect);
/**
* \brief Get the dots/pixels-per-inch for a display
*
* \note Diagonal, horizontal and vertical DPI can all be optionally
* returned if the parameter is non-NULL.
*
* \return 0 on success, or -1 if no DPI information is available or the index is out of range.
*
* \sa SDL_GetNumVideoDisplays()
*/
extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
/**
* \brief Get the usable desktop area represented by a display, with the
* primary display located at 0,0
@ -347,6 +353,27 @@ extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, fl
*/
extern DECLSPEC int SDLCALL SDL_GetDisplayUsableBounds(int displayIndex, SDL_Rect * rect);
/**
* \brief Get the dots/pixels-per-inch for a display
*
* \note Diagonal, horizontal and vertical DPI can all be optionally
* returned if the parameter is non-NULL.
*
* \return 0 on success, or -1 if no DPI information is available or the index is out of range.
*
* \sa SDL_GetNumVideoDisplays()
*/
extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
/**
* \brief Get the orientation of a display
*
* \return The orientation of the display, or SDL_ORIENTATION_UNKNOWN if it isn't available.
*
* \sa SDL_GetNumVideoDisplays()
*/
extern DECLSPEC SDL_DisplayOrientation SDLCALL SDL_GetDisplayOrientation(int displayIndex);
/**
* \brief Returns the number of available display modes.
*