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#include "Window.h"
#include "Input.h"
#include "Event.h"
#include "Logger.h"
#include "Platform.h"
struct _DisplayData DisplayInfo;
struct _WindowData WindowInfo;
#define Display_CentreX(width) (DisplayInfo.x + (DisplayInfo.Width - width) / 2)
#define Display_CentreY(height) (DisplayInfo.y + (DisplayInfo.Height - height) / 2)
static int cursorPrevX, cursorPrevY;
static cc_bool cursorVisible = true;
/* Gets the position of the cursor in screen or window coordinates */
static void Cursor_GetRawPos(int* x, int* y);
/* Sets whether the cursor is visible when over this window */
/* NOTE: You MUST BE VERY CAREFUL with this! OS typically uses a counter for visibility, */
/* so setting invisible multiple times means you must then set visible multiple times. */
static void Cursor_DoSetVisible(cc_bool visible);
/* Sets whether the cursor is visible when over this window */
static void Cursor_SetVisible(cc_bool visible) {
if (cursorVisible == visible) return;
cursorVisible = visible;
Cursor_DoSetVisible(visible);
}
static void MoveRawUsingCursorDelta(void) {
int x, y;
Cursor_GetRawPos(&x, &y);
Event_RaiseRawMove(&PointerEvents.RawMoved, x - cursorPrevX, y - cursorPrevY);
}
static void CentreMousePosition(void) {
Cursor_SetPosition(Window_Main.Width / 2, Window_Main.Height / 2);
/* Fixes issues with large DPI displays on Windows >= 8.0. */
Cursor_GetRawPos(&cursorPrevX, &cursorPrevY);
}
static void RegrabMouse(void) {
if (!Window_Main.Focused || !Window_Main.Exists) return;
CentreMousePosition();
}
static CC_INLINE void DefaultEnableRawMouse(void) {
Input.RawMode = true;
RegrabMouse();
Cursor_SetVisible(false);
}
static CC_INLINE void DefaultUpdateRawMouse(void) {
MoveRawUsingCursorDelta();
CentreMousePosition();
}
static CC_INLINE void DefaultDisableRawMouse(void) {
Input.RawMode = false;
RegrabMouse();
Cursor_SetVisible(true);
}
/* The actual windowing system specific method to display a message box */
static void ShowDialogCore(const char* title, const char* msg);
void Window_ShowDialog(const char* title, const char* msg) {
/* Ensure cursor is usable while showing message box */
cc_bool rawMode = Input.RawMode;
if (rawMode) Window_DisableRawMouse();
ShowDialogCore(title, msg);
if (rawMode) Window_EnableRawMouse();
}
struct GraphicsMode { int R, G, B, A; };
/* Creates a GraphicsMode compatible with the default display device */
static CC_INLINE void InitGraphicsMode(struct GraphicsMode* m) {
int bpp = DisplayInfo.Depth;
m->A = 0;
switch (bpp) {
case 32:
m->R = 8; m->G = 8; m->B = 8; m->A = 8; break;
case 30:
m->R = 10; m->G = 10; m->B = 10; m->A = 2; break;
case 24:
m->R = 8; m->G = 8; m->B = 8; break;
case 16:
m->R = 5; m->G = 6; m->B = 5; break;
case 15:
m->R = 5; m->G = 5; m->B = 5; break;
case 8:
m->R = 3; m->G = 3; m->B = 2; break;
case 4:
m->R = 2; m->G = 2; m->B = 1; break;
default:
/* mode->R = 0; mode->G = 0; mode->B = 0; */
Logger_Abort2(bpp, "Unsupported bits per pixel"); break;
}
}
/* EGL is window system agnostic, other OpenGL context backends are tied to one windowing system */
#if (CC_GFX_BACKEND & CC_GFX_BACKEND_GL_MASK) && defined CC_BUILD_EGL
/*########################################################################################################################*
*-------------------------------------------------------EGL OpenGL--------------------------------------------------------*
*#########################################################################################################################*/
#include <EGL/egl.h>
static EGLDisplay ctx_display;
static EGLContext ctx_context;
static EGLSurface ctx_surface;
static EGLConfig ctx_config;
static EGLint ctx_numConfig;
#ifdef CC_BUILD_SWITCH
static void GLContext_InitSurface(void); // replacement in Window_Switch.c for handheld/docked resolution fix
#else
static void GLContext_InitSurface(void) {
void* window = Window_Main.Handle;
if (!window) return; /* window not created or lost */
ctx_surface = eglCreateWindowSurface(ctx_display, ctx_config, window, NULL);
if (!ctx_surface) return;
eglMakeCurrent(ctx_display, ctx_surface, ctx_surface, ctx_context);
}
#endif
static void GLContext_FreeSurface(void) {
if (!ctx_surface) return;
eglMakeCurrent(ctx_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
eglDestroySurface(ctx_display, ctx_surface);
ctx_surface = NULL;
}
void GLContext_Create(void) {
#if CC_GFX_BACKEND == CC_GFX_BACKEND_GL2
static EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
#else
static EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 1, EGL_NONE };
#endif
static EGLint attribs[] = {
EGL_RED_SIZE, 0, EGL_GREEN_SIZE, 0,
EGL_BLUE_SIZE, 0, EGL_ALPHA_SIZE, 0,
EGL_DEPTH_SIZE, GLCONTEXT_DEFAULT_DEPTH,
EGL_STENCIL_SIZE, 0,
EGL_COLOR_BUFFER_TYPE, EGL_RGB_BUFFER,
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
#if defined CC_BUILD_GLES && (CC_GFX_BACKEND == CC_GFX_BACKEND_GL2)
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
#elif defined CC_BUILD_GLES
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES_BIT,
#else
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
#endif
EGL_NONE
};
struct GraphicsMode mode;
InitGraphicsMode(&mode);
attribs[1] = mode.R; attribs[3] = mode.G;
attribs[5] = mode.B; attribs[7] = mode.A;
ctx_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(ctx_display, NULL, NULL);
eglBindAPI(EGL_OPENGL_ES_API);
eglChooseConfig(ctx_display, attribs, &ctx_config, 1, &ctx_numConfig);
if (!ctx_config) {
attribs[9] = 16; // some older devices only support 16 bit depth buffer
eglChooseConfig(ctx_display, attribs, &ctx_config, 1, &ctx_numConfig);
}
if (!ctx_config) Window_ShowDialog("Warning", "Failed to choose EGL config, ClassiCube may be unable to start");
ctx_context = eglCreateContext(ctx_display, ctx_config, EGL_NO_CONTEXT, context_attribs);
if (!ctx_context) Logger_Abort2(eglGetError(), "Failed to create EGL context");
GLContext_InitSurface();
}
void GLContext_Update(void) {
GLContext_FreeSurface();
GLContext_InitSurface();
}
cc_bool GLContext_TryRestore(void) {
GLContext_FreeSurface();
GLContext_InitSurface();
return ctx_surface != NULL;
}
void GLContext_Free(void) {
GLContext_FreeSurface();
eglDestroyContext(ctx_display, ctx_context);
eglTerminate(ctx_display);
}
void* GLContext_GetAddress(const char* function) {
return eglGetProcAddress(function);
}
cc_bool GLContext_SwapBuffers(void) {
EGLint err;
if (!ctx_surface) return false;
if (eglSwapBuffers(ctx_display, ctx_surface)) return true;
err = eglGetError();
/* TODO: figure out what errors need to be handled here */
Logger_Abort2(err, "Failed to swap buffers");
return false;
}
void GLContext_SetFpsLimit(cc_bool vsync, float minFrameMs) {
eglSwapInterval(ctx_display, vsync);
}
void GLContext_GetApiInfo(cc_string* info) { }
#endif
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