mirror of
https://github.com/gnif/LookingGlass.git
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252 lines
7.2 KiB
C
252 lines
7.2 KiB
C
/**
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* Looking Glass
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* Copyright (C) 2017-2021 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _H_I_DISPLAYSERVER_
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#define _H_I_DISPLAYSERVER_
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#include <stdbool.h>
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#include <EGL/egl.h>
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#include "common/types.h"
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typedef enum LG_ClipboardData
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{
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LG_CLIPBOARD_DATA_TEXT = 0,
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LG_CLIPBOARD_DATA_PNG,
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LG_CLIPBOARD_DATA_BMP,
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LG_CLIPBOARD_DATA_TIFF,
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LG_CLIPBOARD_DATA_JPEG,
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LG_CLIPBOARD_DATA_NONE // enum max, not a data type
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}
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LG_ClipboardData;
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typedef enum LG_DSProperty
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{
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/**
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* returns the maximum number of samples supported
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* if not implemented LG assumes no multisample support
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* return data type: int
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*/
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LG_DS_MAX_MULTISAMPLE,
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/**
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* returns if the platform is warp capable
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* if not implemented LG assumes that the platform is warp capable
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* return data type: bool
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*/
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LG_DS_WARP_SUPPORT,
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}
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LG_DSProperty;
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enum LG_DSWarpSupport
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{
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LG_DS_WARP_NONE,
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LG_DS_WARP_SURFACE,
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LG_DS_WARP_SCREEN,
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};
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typedef enum LG_DSPointer
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{
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LG_POINTER_NONE = 0,
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LG_POINTER_SQUARE,
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LG_POINTER_ARROW,
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LG_POINTER_INPUT,
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LG_POINTER_MOVE,
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LG_POINTER_RESIZE_NS,
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LG_POINTER_RESIZE_EW,
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LG_POINTER_RESIZE_NESW,
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LG_POINTER_RESIZE_NWSE,
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LG_POINTER_HAND,
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LG_POINTER_NOT_ALLOWED,
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}
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LG_DSPointer;
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#define LG_POINTER_COUNT (LG_POINTER_NOT_ALLOWED + 1)
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typedef struct LG_DSInitParams
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{
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const char * title;
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int x, y, w, h;
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bool center;
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bool fullscreen;
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bool resizable;
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bool borderless;
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bool maximize;
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// if true the renderer requires an OpenGL context
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bool opengl;
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}
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LG_DSInitParams;
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typedef void (* LG_ClipboardReplyFn)(void * opaque, const LG_ClipboardData type,
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uint8_t * data, uint32_t size);
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typedef struct LG_DSGLContext
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* LG_DSGLContext;
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typedef struct LGEvent LGEvent;
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struct LG_DisplayServerOps
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{
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/* called before options are parsed, useful for registering options */
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void (*setup)(void);
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/* return true if the selected ds is valid for the current platform */
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bool (*probe)(void);
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/* called before anything has been initialized */
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bool (*earlyInit)(void);
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/* called when it's time to create and show the application window */
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bool (*init)(const LG_DSInitParams params);
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/* called at startup after window creation, renderer and SPICE is ready */
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void (*startup)();
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/* called just before final window destruction, before final free */
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void (*shutdown)();
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/* final free */
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void (*free)();
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/*
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* return a system specific property, returns false if unsupported or failure
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* if the platform does not support/implement the requested property the value
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* of `ret` must not be altered.
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*/
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bool (*getProp)(LG_DSProperty prop, void * ret);
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#ifdef ENABLE_EGL
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/* EGL support */
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EGLDisplay (*getEGLDisplay)(void);
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EGLNativeWindowType (*getEGLNativeWindow)(void);
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void (*eglSwapBuffers)(EGLDisplay display, EGLSurface surface, const struct Rect * damage, int count);
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#endif
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#ifdef ENABLE_OPENGL
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/* opengl platform specific methods */
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LG_DSGLContext (*glCreateContext)(void);
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void (*glDeleteContext)(LG_DSGLContext context);
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void (*glMakeCurrent)(LG_DSGLContext context);
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void (*glSetSwapInterval)(int interval);
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void (*glSwapBuffers)(void);
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#endif
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/* Waits for a good time to render the next frame in time for the next vblank.
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* This is optional and a display server may choose to not implement it. */
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void (*waitFrame)(void);
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/* This must be called when waitFrame returns, but no frame is actually rendered. */
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void (*skipFrame)(void);
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/* This is used to interrupt waitFrame. */
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void (*stopWaitFrame)(void);
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/* dm specific cursor implementations */
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void (*guestPointerUpdated)(double x, double y, double localX, double localY);
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void (*setPointer)(LG_DSPointer pointer);
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void (*grabKeyboard)();
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void (*ungrabKeyboard)();
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/* (un)grabPointer is used to toggle cursor tracking/confine in normal mode */
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void (*grabPointer)();
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void (*ungrabPointer)();
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/* (un)capturePointer is used do toggle special cursor tracking in capture mode */
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void (*capturePointer)();
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void (*uncapturePointer)();
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/* exiting = true if the warp is to leave the window */
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void (*warpPointer)(int x, int y, bool exiting);
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/* called when the client needs to realign the pointer. This should simply
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* call the appropriate app_handleMouse* method for the platform with zero
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* deltas */
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void (*realignPointer)();
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/* returns true if the position specified is actually valid */
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bool (*isValidPointerPos)(int x, int y);
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/* called to disable/enable the screensaver */
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void (*inhibitIdle)();
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void (*uninhibitIdle)();
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/* wait for the specified time without blocking UI processing/event loops */
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void (*wait)(unsigned int time);
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/* get/set the window dimensions & state */
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void (*setWindowSize)(int x, int y);
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bool (*getFullscreen)(void);
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void (*setFullscreen)(bool fs);
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void (*minimize)(void);
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/* clipboard support, optional, if not supported set to NULL */
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bool (*cbInit)(void);
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void (*cbNotice)(LG_ClipboardData type);
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void (*cbRelease)(void);
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void (*cbRequest)(LG_ClipboardData type);
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};
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#ifdef ENABLE_EGL
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#define ASSERT_EGL_FN(x) assert(x);
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#else
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#define ASSERT_EGL_FN(x)
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#endif
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#ifdef ENABLE_OPENGL
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#define ASSERT_OPENGL_FN(x) assert(x)
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#else
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#define ASSERT_OPENGL_FN(x)
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#endif
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#define ASSERT_LG_DS_VALID(x) \
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assert((x)->setup ); \
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assert((x)->probe ); \
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assert((x)->earlyInit ); \
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assert((x)->init ); \
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assert((x)->startup ); \
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assert((x)->shutdown ); \
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assert((x)->free ); \
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assert((x)->getProp ); \
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ASSERT_EGL_FN((x)->getEGLDisplay ); \
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ASSERT_EGL_FN((x)->getEGLNativeWindow ); \
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ASSERT_EGL_FN((x)->eglSwapBuffers ); \
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ASSERT_OPENGL_FN((x)->glCreateContext ); \
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ASSERT_OPENGL_FN((x)->glDeleteContext ); \
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ASSERT_OPENGL_FN((x)->glMakeCurrent ); \
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ASSERT_OPENGL_FN((x)->glSetSwapInterval); \
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ASSERT_OPENGL_FN((x)->glSwapBuffers ); \
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assert(!(x)->waitFrame == !(x)->stopWaitFrame); \
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assert((x)->guestPointerUpdated); \
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assert((x)->setPointer ); \
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assert((x)->grabPointer ); \
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assert((x)->ungrabPointer ); \
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assert((x)->capturePointer ); \
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assert((x)->uncapturePointer ); \
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assert((x)->warpPointer ); \
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assert((x)->realignPointer ); \
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assert((x)->isValidPointerPos ); \
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assert((x)->inhibitIdle ); \
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assert((x)->uninhibitIdle ); \
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assert((x)->wait ); \
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assert((x)->setWindowSize ); \
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assert((x)->setFullscreen ); \
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assert((x)->getFullscreen ); \
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assert((x)->minimize );
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#endif
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