janwas
836cd08d5e
also: - renamed wdll to delay_load, and wdll_ver to dll_ver - removed empty wcpu This was SVN commit r3751.
1298 lines
29 KiB
C++
Executable File
1298 lines
29 KiB
C++
Executable File
/**
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* =========================================================================
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* File : wsdl.cpp
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* Project : 0 A.D.
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* Description : emulate SDL on Windows.
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*
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* @author Jan.Wassenberg@stud.uni-karlsruhe.de
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* =========================================================================
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*/
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/*
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* Copyright (c) 2003-2004 Jan Wassenberg
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*
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* Redistribution and/or modification are also permitted under the
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* terms of the GNU General Public License as published by the
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* Free Software Foundation (version 2 or later, at your option).
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include "precompiled.h"
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#include <stdio.h>
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#include <math.h>
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#include "win_internal.h"
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#include <ddraw.h>
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#include <process.h> // _beginthreadex
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#include <WindowsX.h> // message crackers
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#include "sdl.h"
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#include "lib.h"
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#include "posix.h"
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#include "ogl.h" // needed to pull in the delay-loaded opengl32.dll
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#include "SDL_vkeys.h"
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// for easy removal of DirectDraw dependency (used to query total video mem)
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#define DDRAW
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#if MSC_VERSION
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#pragma comment(lib, "user32.lib")
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#pragma comment(lib, "gdi32.lib")
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// don't bother with dynamic linking -
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// DirectX is present in all Windows versions since Win95.
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#ifdef DDRAW
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# pragma comment(lib, "ddraw.lib")
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#endif
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#endif
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#pragma data_seg(WIN_CALLBACK_PRE_MAIN(b))
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WIN_REGISTER_FUNC(wsdl_init);
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#pragma data_seg(WIN_CALLBACK_POST_ATEXIT(d))
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WIN_REGISTER_FUNC(wsdl_shutdown);
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#pragma data_seg()
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// in fullscreen mode, i.e. not windowed.
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// video mode will be restored when app is deactivated.
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static bool fullscreen;
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// the app is shutting down.
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// if set, ignore further Windows messages for clean shutdown.
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static bool is_shutdown;
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// app instance.
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// returned by GetModuleHandle and used in kbd hook and window creation.
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static HINSTANCE hInst = 0;
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HWND hWnd = (HWND)INVALID_HANDLE_VALUE;
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static HDC hDC = (HDC)INVALID_HANDLE_VALUE; // needed by gamma code
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//----------------------------------------------------------------------------
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// gamma
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static bool gamma_changed;
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static u16 org_ramp[3][256];
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static u16 cur_ramp[3][256];
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// ramp: 8.8 fixed point
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static LibError calc_gamma_ramp(float gamma, u16* ramp)
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{
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// assume identity if invalid
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if(gamma <= 0.0f)
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gamma = 1.0f;
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// identity: special-case to make sure we get exact values
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if(gamma == 1.0f)
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{
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for(u16 i = 0; i < 256; i++)
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ramp[i] = (i << 8);
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return ERR_OK;
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}
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const double inv_gamma = 1.0 / gamma;
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for(int i = 0; i < 256; i++)
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{
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const double frac = i / 256.0;
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// don't add 1/256 - this isn't time-critical and
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// accuracy is more important.
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// need a temp variable to disambiguate pow() argument type.
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ramp[i] = fp_to_u16(pow(frac, inv_gamma));
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}
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return ERR_OK;
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}
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enum GammaAction
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{
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GAMMA_LATCH_NEW_RAMP,
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GAMMA_RESTORE_ORIGINAL
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};
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static void gamma_swap(GammaAction action)
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{
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if(gamma_changed)
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{
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void* ramp = (action == GAMMA_LATCH_NEW_RAMP)? cur_ramp : org_ramp;
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SetDeviceGammaRamp(hDC, ramp);
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}
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}
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// note: any component gamma = 0 is assumed to be identity.
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int SDL_SetGamma(float r, float g, float b)
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{
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// if we haven't successfully changed gamma yet,
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// get current ramp so we can later restore it.
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if(!gamma_changed)
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if(!GetDeviceGammaRamp(hDC, org_ramp))
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return -1;
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CHECK_ERR(calc_gamma_ramp(r, cur_ramp[0]));
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CHECK_ERR(calc_gamma_ramp(g, cur_ramp[1]));
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CHECK_ERR(calc_gamma_ramp(b, cur_ramp[2]));
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if(!SetDeviceGammaRamp(hDC, cur_ramp))
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return -1;
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gamma_changed = true;
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return 0;
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}
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//----------------------------------------------------------------------------
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// video
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//----------------------------------------------------------------------------
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static DEVMODE dm; // current video mode
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static HGLRC hGLRC = (HGLRC)INVALID_HANDLE_VALUE;
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static int depth_bits = 24; // depth buffer size; set via SDL_GL_SetAttribute
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// check if resolution needs to be changed
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static bool video_need_change(int w, int h, int cur_w, int cur_h, bool fullscreen)
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{
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// invalid: keep current settings
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if(w <= 0 || h <= 0)
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return false;
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// higher resolution mode needed
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if(w > cur_w || h > cur_h)
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return true;
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// fullscreen requested and not exact same mode set
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if(fullscreen && (w != cur_w || h != cur_h))
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return true;
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return false;
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}
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static inline void video_enter_game_mode()
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{
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ShowWindow(hWnd, SW_RESTORE);
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ChangeDisplaySettings(&dm, CDS_FULLSCREEN);
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}
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static inline void video_leave_game_mode()
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{
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ChangeDisplaySettings(0, 0);
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ShowWindow(hWnd, SW_MINIMIZE);
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}
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int SDL_GL_SetAttribute(SDL_GLattr attr, int value)
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{
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if(attr == SDL_GL_DEPTH_SIZE)
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depth_bits = value;
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return 0;
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}
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static LRESULT CALLBACK wndproc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
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// set video mode wxh:bpp if necessary.
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// w = h = bpp = 0 => no change.
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int SDL_SetVideoMode(int w, int h, int bpp, unsigned long flags)
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{
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int ret = 0; // assume failure
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WIN_SAVE_LAST_ERROR; // OpenGL and GDI
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fullscreen = (flags & SDL_FULLSCREEN) != 0;
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// get current mode settings
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memset(&dm, 0, sizeof(dm));
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dm.dmSize = sizeof(dm);
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EnumDisplaySettings(0, ENUM_CURRENT_SETTINGS, &dm);
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int cur_w = (int)dm.dmPelsWidth, cur_h = (int)dm.dmPelsHeight;
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// independent of resolution; app must always get bpp it wants
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dm.dmBitsPerPel = bpp;
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dm.dmFields = DM_BITSPERPEL;
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if(video_need_change(w,h, cur_w,cur_h, fullscreen))
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{
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dm.dmPelsWidth = (DWORD)w;
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dm.dmPelsHeight = (DWORD)h;
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dm.dmFields |= DM_PELSWIDTH|DM_PELSHEIGHT;
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}
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// the (possibly changed) mode will be (re)set at next WM_ACTIVATE
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//
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// window init
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// create new window every time (instead of once at startup), because
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// pixel format isn't supposed to be changed more than once
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//
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// register window class
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WNDCLASS wc;
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memset(&wc, 0, sizeof(wc));
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wc.lpfnWndProc = wndproc;
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wc.lpszClassName = "WSDL";
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wc.hInstance = hInst;
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ATOM class_atom = RegisterClass(&wc);
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if(!class_atom)
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{
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debug_warn("SDL_SetVideoMode: RegisterClass failed");
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return 0;
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}
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DWORD windowStyle = fullscreen ? (WS_POPUP|WS_VISIBLE) : WS_VISIBLE | WS_CAPTION|WS_POPUPWINDOW|WS_MINIMIZEBOX;
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// Calculate the size of the outer window, so that the client area has
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// the desired dimensions.
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RECT r;
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r.left = r.top = 0;
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r.right = w; r.bottom = h;
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if (AdjustWindowRectEx(&r, windowStyle, FALSE, 0))
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{
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w = r.right - r.left;
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h = r.bottom - r.top;
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}
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// note: you can override the hardcoded window name via SDL_WM_SetCaption.
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hWnd = CreateWindowEx(0, (LPCSTR)class_atom, "wsdl", windowStyle, 0, 0, w, h, 0, 0, hInst, 0);
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if(!hWnd)
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return 0;
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hDC = GetDC(hWnd);
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//
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// pixel format
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//
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const DWORD dwFlags = PFD_SUPPORT_OPENGL|PFD_DRAW_TO_WINDOW|PFD_DOUBLEBUFFER;
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BYTE cColourBits = (BYTE)bpp;
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BYTE cAlphaBits = 0;
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if(bpp == 32)
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{
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cColourBits = 24;
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cAlphaBits = 8;
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}
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const BYTE cAccumBits = 0;
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const BYTE cDepthBits = (BYTE)depth_bits;
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const BYTE cStencilBits = 0;
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const BYTE cAuxBuffers = 0;
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PIXELFORMATDESCRIPTOR pfd =
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{
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sizeof(PIXELFORMATDESCRIPTOR),
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1, // version
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dwFlags,
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PFD_TYPE_RGBA,
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cColourBits, 0, 0, 0, 0, 0, 0, // c*Bits, c*Shift are unused
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cAlphaBits, 0, // cAlphaShift is unused
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cAccumBits, 0, 0, 0, 0, // cAccum*Bits are unused
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cDepthBits,
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cStencilBits,
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cAuxBuffers,
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PFD_MAIN_PLANE,
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0, 0, 0, 0 // bReserved, dw*Mask are unused
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};
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// GDI pixel format functions apparently require opengl to be loaded
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// (may not have been done yet, if delay-loaded). call a gl function
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// (no-op) to make sure.
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(void)glGetError();
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int pf = ChoosePixelFormat(hDC, &pfd);
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if(!SetPixelFormat(hDC, pf, &pfd))
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goto fail;
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hGLRC = wglCreateContext(hDC);
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if(!hGLRC)
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goto fail;
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if(!wglMakeCurrent(hDC, hGLRC))
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goto fail;
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ret = 1;
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fail:
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WIN_RESTORE_LAST_ERROR;
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return ret;
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}
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static void video_shutdown()
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{
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if(fullscreen)
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if(ChangeDisplaySettings(0, 0) != DISP_CHANGE_SUCCESSFUL)
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debug_warn("ChangeDisplaySettings failed");
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if(hGLRC != INVALID_HANDLE_VALUE)
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{
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WARN_IF_FALSE(wglMakeCurrent(0, 0));
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WARN_IF_FALSE(wglDeleteContext(hGLRC));
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hGLRC = (HGLRC)INVALID_HANDLE_VALUE;
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}
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if(hDC != INVALID_HANDLE_VALUE)
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{
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// return value is whether the DC was actually freed.
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// this seems to sometimes be 0, so don't warn.
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(void)ReleaseDC(hWnd, hDC);
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hDC = (HDC)INVALID_HANDLE_VALUE;
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}
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if(hWnd != INVALID_HANDLE_VALUE)
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{
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// this also seems to fail spuriously with GetLastError == 0,
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// so don't complain.
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(void)DestroyWindow(hWnd);
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hWnd = (HWND)INVALID_HANDLE_VALUE;
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}
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}
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void SDL_GL_SwapBuffers()
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{
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SwapBuffers(hDC);
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}
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SDL_VideoInfo* SDL_GetVideoInfo()
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{
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static SDL_VideoInfo video_info;
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#ifdef DDRAW
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WIN_SAVE_LAST_ERROR; // DirectDraw
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ONCE({
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IDirectDraw* dd = 0;
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HRESULT hr = DirectDrawCreate(0, &dd, 0);
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if(SUCCEEDED(hr) && dd != 0)
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{
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DDCAPS caps;
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memset(&caps, 0, sizeof(caps));
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caps.dwSize = sizeof(caps);
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hr = dd->GetCaps(&caps, 0);
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if(SUCCEEDED(hr))
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video_info.video_mem = caps.dwVidMemTotal;
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dd->Release();
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}
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});
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WIN_RESTORE_LAST_ERROR;
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#endif
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return &video_info;
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}
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// For very [very] basic memory-usage information.
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// Should be replaced by a decent memory profiler.
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//
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// copied from SDL_GetVideoInfo but cannot be implemented in terms of it:
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// SDL_VideoInfo doesn't provide for returning "remaining video memory".
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int GetVRAMInfo(int& remaining, int& total)
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{
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int ok = 0;
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#ifdef DDRAW
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WIN_SAVE_LAST_ERROR; // DirectDraw
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IDirectDraw* dd = 0;
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HRESULT hr = DirectDrawCreate(0, &dd, 0);
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if(SUCCEEDED(hr) && dd != 0)
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{
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static DDCAPS caps;
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caps.dwSize = sizeof(caps);
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hr = dd->GetCaps(&caps, 0);
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if(SUCCEEDED(hr))
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{
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ok = 1;
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remaining = caps.dwVidMemFree;
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total = caps.dwVidMemTotal;
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}
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dd->Release();
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}
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WIN_RESTORE_LAST_ERROR;
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#endif
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return ok;
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}
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SDL_Surface* SDL_GetVideoSurface()
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{
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return 0;
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}
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//----------------------------------------------------------------------------
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// event queue
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typedef std::queue<SDL_Event> Queue;
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static Queue queue;
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static void queue_event(const SDL_Event& ev)
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{
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queue.push(ev);
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}
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static bool dequeue_event(SDL_Event* ev)
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{
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if(queue.empty())
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return false;
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*ev = queue.front();
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queue.pop();
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return true;
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}
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static void queue_quit_event()
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{
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SDL_Event ev;
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ev.type = SDL_QUIT;
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queue_event(ev);
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}
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//----------------------------------------------------------------------------
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// app activation
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enum SdlActivationType { LOSE = 0, GAIN = 1 };
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static inline void queue_active_event(SdlActivationType type, uint changed_app_state)
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{
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// SDL says this event is not generated when the window is created,
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// but skipping the first event may confuse things.
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SDL_Event ev;
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ev.type = SDL_ACTIVEEVENT;
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ev.active.state = (u8)changed_app_state;
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ev.active.gain = (type == GAIN)? 1 : 0;
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queue_event(ev);
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}
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// SDL_APP* bitflags indicating whether we are active.
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// note: responsibility for yielding lies with SDL apps -
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// they control the main loop.
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static uint app_state;
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static void active_change_state(SdlActivationType type, uint changed_app_state)
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{
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uint old_app_state = app_state;
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if(type == GAIN)
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app_state |= changed_app_state;
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else
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app_state &= ~changed_app_state;
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// generate an event - but only if the given state flags actually changed.
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if((old_app_state & changed_app_state) != (app_state & changed_app_state))
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queue_active_event(type, changed_app_state);
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}
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static void reset_all_keys();
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static LRESULT OnActivate(HWND hWnd, UINT state, HWND UNUSED(hWndActDeact), BOOL fMinimized)
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{
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SdlActivationType type;
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uint changed_app_state;
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// went active and not minimized
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if(state != WA_INACTIVE && !fMinimized)
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{
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type = GAIN;
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changed_app_state = SDL_APPINPUTFOCUS|SDL_APPACTIVE;
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|
|
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// grab keyboard focus (we previously had DefWindowProc do this).
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SetFocus(hWnd);
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gamma_swap(GAMMA_LATCH_NEW_RAMP);
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if(fullscreen)
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video_enter_game_mode();
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}
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// deactivated (Alt+Tab out) or minimized
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else
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{
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type = LOSE;
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changed_app_state = SDL_APPINPUTFOCUS;
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if(fMinimized)
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changed_app_state |= SDL_APPACTIVE;
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reset_all_keys();
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gamma_swap(GAMMA_RESTORE_ORIGINAL);
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if(fullscreen)
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video_leave_game_mode();
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}
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active_change_state(type, changed_app_state);
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return 0;
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}
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|
|
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Uint8 SDL_GetAppState()
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{
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return app_state;
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}
|
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|
|
//----------------------------------------------------------------------------
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// keyboard
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|
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// note: keysym.unicode is only returned for SDL_KEYDOWN, and is otherwise 0.
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|
static void queue_key_event(uint type, uint sdlk, WCHAR unicode_char)
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|
{
|
|
SDL_Event ev;
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|
ev.type = type;
|
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ev.key.keysym.sym = (SDLKey)sdlk;
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ev.key.keysym.unicode = (u16)unicode_char;
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queue_event(ev);
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}
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|
|
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static Uint8 keys[SDLK_LAST];
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|
|
static void init_vkmap(SDLKey (&VK_keymap)[256])
|
|
{
|
|
int i;
|
|
|
|
// Map the VK keysyms
|
|
for ( i=0; i<sizeof(VK_keymap)/sizeof(VK_keymap[0]); ++i )
|
|
VK_keymap[i] = SDLK_UNKNOWN;
|
|
|
|
VK_keymap[VK_BACK] = SDLK_BACKSPACE;
|
|
VK_keymap[VK_TAB] = SDLK_TAB;
|
|
VK_keymap[VK_CLEAR] = SDLK_CLEAR;
|
|
VK_keymap[VK_RETURN] = SDLK_RETURN;
|
|
VK_keymap[VK_PAUSE] = SDLK_PAUSE;
|
|
VK_keymap[VK_ESCAPE] = SDLK_ESCAPE;
|
|
VK_keymap[VK_SPACE] = SDLK_SPACE;
|
|
VK_keymap[VK_OEM_7] = SDLK_QUOTE;
|
|
VK_keymap[VK_OEM_COMMA] = SDLK_COMMA;
|
|
VK_keymap[VK_OEM_MINUS] = SDLK_MINUS;
|
|
VK_keymap[VK_OEM_PERIOD] = SDLK_PERIOD;
|
|
VK_keymap[VK_OEM_2] = SDLK_SLASH;
|
|
for(i = 0; i < 10; i++)
|
|
VK_keymap[VK_0+i] = (SDLKey)(SDLK_0+i);
|
|
VK_keymap[VK_OEM_1] = SDLK_SEMICOLON;
|
|
VK_keymap[VK_OEM_PLUS] = SDLK_EQUALS;
|
|
VK_keymap[VK_OEM_4] = SDLK_LEFTBRACKET;
|
|
VK_keymap[VK_OEM_5] = SDLK_BACKSLASH;
|
|
VK_keymap[VK_OEM_6] = SDLK_RIGHTBRACKET;
|
|
VK_keymap[VK_OEM_3] = SDLK_BACKQUOTE;
|
|
VK_keymap[VK_OEM_8] = SDLK_BACKQUOTE;
|
|
|
|
for(i = 0; i < 26; i++)
|
|
VK_keymap[VK_A+i] = (SDLKey)(SDLK_a+i);
|
|
|
|
VK_keymap[VK_DELETE] = SDLK_DELETE;
|
|
|
|
for(i = 0; i < 10; i++)
|
|
VK_keymap[VK_NUMPAD0+i] = (SDLKey)(SDLK_KP0+i);
|
|
|
|
VK_keymap[VK_DECIMAL] = SDLK_KP_PERIOD;
|
|
VK_keymap[VK_DIVIDE] = SDLK_KP_DIVIDE;
|
|
VK_keymap[VK_MULTIPLY] = SDLK_KP_MULTIPLY;
|
|
VK_keymap[VK_SUBTRACT] = SDLK_KP_MINUS;
|
|
VK_keymap[VK_ADD] = SDLK_KP_PLUS;
|
|
|
|
VK_keymap[VK_UP] = SDLK_UP;
|
|
VK_keymap[VK_DOWN] = SDLK_DOWN;
|
|
VK_keymap[VK_RIGHT] = SDLK_RIGHT;
|
|
VK_keymap[VK_LEFT] = SDLK_LEFT;
|
|
VK_keymap[VK_INSERT] = SDLK_INSERT;
|
|
VK_keymap[VK_HOME] = SDLK_HOME;
|
|
VK_keymap[VK_END] = SDLK_END;
|
|
VK_keymap[VK_PRIOR] = SDLK_PAGEUP;
|
|
VK_keymap[VK_NEXT] = SDLK_PAGEDOWN;
|
|
|
|
for(i = 0; i < 12; i++)
|
|
VK_keymap[VK_F1+i] = (SDLKey)(SDLK_F1+i);
|
|
|
|
VK_keymap[VK_NUMLOCK] = SDLK_NUMLOCK;
|
|
VK_keymap[VK_CAPITAL] = SDLK_CAPSLOCK;
|
|
VK_keymap[VK_SCROLL] = SDLK_SCROLLOCK;
|
|
VK_keymap[VK_RSHIFT] = SDLK_RSHIFT;
|
|
VK_keymap[VK_LSHIFT] = SDLK_LSHIFT;
|
|
VK_keymap[VK_SHIFT] = SDLK_LSHIFT; // XXX: Not quite
|
|
VK_keymap[VK_RCONTROL] = SDLK_RCTRL;
|
|
VK_keymap[VK_LCONTROL] = SDLK_LCTRL;
|
|
VK_keymap[VK_CONTROL] = SDLK_LCTRL; // XXX: Not quite
|
|
VK_keymap[VK_RMENU] = SDLK_RALT;
|
|
VK_keymap[VK_LMENU] = SDLK_LALT;
|
|
VK_keymap[VK_MENU] = SDLK_LALT; // XXX: Not quite
|
|
VK_keymap[VK_RWIN] = SDLK_RSUPER;
|
|
VK_keymap[VK_LWIN] = SDLK_LSUPER;
|
|
|
|
VK_keymap[VK_HELP] = SDLK_HELP;
|
|
#ifdef VK_PRINT
|
|
VK_keymap[VK_PRINT] = SDLK_PRINT;
|
|
#endif
|
|
VK_keymap[VK_SNAPSHOT] = SDLK_PRINT;
|
|
VK_keymap[VK_CANCEL] = SDLK_BREAK;
|
|
VK_keymap[VK_APPS] = SDLK_MENU;
|
|
}
|
|
|
|
inline SDLKey vkmap(int vk)
|
|
{
|
|
static SDLKey VK_SDLKMap[256]; // VK_SDLKMap[vk] == SDLK
|
|
ONCE( init_vkmap(VK_SDLKMap); );
|
|
|
|
if(!(0 <= vk && vk < 256))
|
|
{
|
|
debug_warn("vkmap: invalid vk");
|
|
return SDLK_UNKNOWN;
|
|
}
|
|
return VK_SDLKMap[vk];
|
|
}
|
|
|
|
|
|
static void reset_all_keys()
|
|
{
|
|
SDL_Event spoofed_up_event;
|
|
spoofed_up_event.type = SDL_KEYUP;
|
|
spoofed_up_event.key.keysym.unicode = 0;
|
|
|
|
for(int i = 0; i < ARRAY_SIZE(keys); i++)
|
|
if(keys[i])
|
|
{
|
|
spoofed_up_event.key.keysym.sym = (SDLKey)i;
|
|
queue_event(spoofed_up_event);
|
|
}
|
|
}
|
|
|
|
|
|
static LRESULT OnKey(HWND UNUSED(hWnd), UINT vk, BOOL fDown, int UNUSED(cRepeat), UINT flags)
|
|
{
|
|
// TODO Mappings for left/right modifier keys
|
|
// TODO Modifier statekeeping
|
|
|
|
const uint sdlk = vkmap(vk);
|
|
if(sdlk != SDLK_UNKNOWN)
|
|
keys[sdlk] = (Uint8)fDown;
|
|
|
|
if(!fDown)
|
|
queue_key_event(SDL_KEYUP, sdlk, 0);
|
|
else
|
|
{
|
|
// note: flags is HIWORD(lParam) from WM_KEYDOWN, which includes
|
|
// scancode. ToUnicode also uses its bit 15 to determine if the
|
|
// key is currently pressed.
|
|
const UINT scancode = flags;
|
|
u8 key_states[256];
|
|
GetKeyboardState(key_states);
|
|
WCHAR wchars[8];
|
|
int output_count = ToUnicode(vk, scancode, key_states, wchars, ARRAY_SIZE(wchars), 0);
|
|
// translation succeeded; queue each produced character
|
|
if(output_count > 0)
|
|
{
|
|
for(int i = 0; i < output_count; i++)
|
|
queue_key_event(SDL_KEYDOWN, sdlk, wchars[i]);
|
|
}
|
|
// dead-char; do nothing
|
|
else if(output_count == -1)
|
|
{
|
|
}
|
|
// translation failed; just generate a regular (non-unicode) event
|
|
else if(output_count == 0)
|
|
queue_key_event(SDL_KEYDOWN, sdlk, 0);
|
|
else
|
|
UNREACHABLE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
Uint8* SDL_GetKeyState(int* num_keys)
|
|
{
|
|
if(num_keys)
|
|
*num_keys = SDLK_LAST;
|
|
return keys;
|
|
}
|
|
|
|
|
|
// always on (we don't care about the extra overhead)
|
|
int SDL_EnableUNICODE(int UNUSED(enable))
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------------
|
|
// mouse
|
|
|
|
static void queue_mouse_event(uint x, uint y)
|
|
{
|
|
SDL_Event ev;
|
|
ev.type = SDL_MOUSEMOTION;
|
|
debug_assert(x <= USHRT_MAX && y <= USHRT_MAX);
|
|
ev.motion.x = x;
|
|
ev.motion.y = y;
|
|
queue_event(ev);
|
|
}
|
|
|
|
static void queue_button_event(uint button, uint state, uint x, uint y)
|
|
{
|
|
SDL_Event ev;
|
|
ev.type = (state == SDL_PRESSED)? SDL_MOUSEBUTTONDOWN : SDL_MOUSEBUTTONUP;
|
|
ev.button.button = (u8)button;
|
|
ev.button.state = (u8)state;
|
|
debug_assert(x <= USHRT_MAX && y <= USHRT_MAX);
|
|
ev.button.x = x;
|
|
ev.button.y = y;
|
|
queue_event(ev);
|
|
}
|
|
|
|
|
|
static uint mouse_x, mouse_y;
|
|
|
|
// generate a mouse move message and update our notion of the mouse position.
|
|
// x, y are screen pixel coordinates.
|
|
// notes:
|
|
// - does not actually move the OS cursor;
|
|
// - called from mouse_update and SDL_WarpMouse.
|
|
// - coords should never be negative - this would indicate a logic error.
|
|
static void mouse_moved(int x, int y)
|
|
{
|
|
debug_assert(x >= 0 && y >= 0);
|
|
mouse_x = (uint)x;
|
|
mouse_y = (uint)y;
|
|
queue_mouse_event(mouse_x, mouse_y);
|
|
}
|
|
|
|
|
|
static void mouse_update()
|
|
{
|
|
// don't use DirectInput, because we want to respect the user's mouse
|
|
// sensitivity settings. Windows messages are laggy, so poll instead.
|
|
|
|
// window not created yet or already shut down. no sense reporting
|
|
// mouse position, and bail now to avoid ScreenToClient failing.
|
|
if(hWnd == INVALID_HANDLE_VALUE)
|
|
return;
|
|
|
|
POINT pt;
|
|
WARN_IF_FALSE(GetCursorPos(&pt));
|
|
WARN_IF_FALSE(ScreenToClient(hWnd, &pt));
|
|
|
|
// nothing to do if it hasn't changed since last time
|
|
if(mouse_x == (uint)pt.x && mouse_y == (uint)pt.y)
|
|
return;
|
|
|
|
// moved within window
|
|
RECT client_rect;
|
|
GetClientRect(hWnd, &client_rect);
|
|
if(PtInRect(&client_rect, pt) && WindowFromPoint(pt) == hWnd)
|
|
{
|
|
active_change_state(GAIN, SDL_APPMOUSEFOCUS);
|
|
mouse_moved((int)pt.x, (int)pt.y);
|
|
}
|
|
// moved outside of window
|
|
else
|
|
active_change_state(LOSE, SDL_APPMOUSEFOCUS);
|
|
}
|
|
|
|
static uint mouse_buttons;
|
|
|
|
// (we define a new function signature since the windowsx.h message crackers
|
|
// don't provide for passing uMsg)
|
|
static LRESULT OnMouseButton(HWND UNUSED(hWnd), UINT uMsg, int x, int y, UINT UNUSED(flags))
|
|
{
|
|
uint button;
|
|
uint state;
|
|
switch(uMsg)
|
|
{
|
|
case WM_LBUTTONDOWN:
|
|
button = SDL_BUTTON_LEFT;
|
|
state = SDL_PRESSED;
|
|
break;
|
|
case WM_LBUTTONUP:
|
|
button = SDL_BUTTON_LEFT;
|
|
state = SDL_RELEASED;
|
|
break;
|
|
case WM_RBUTTONDOWN:
|
|
button = SDL_BUTTON_RIGHT;
|
|
state = SDL_PRESSED;
|
|
break;
|
|
case WM_RBUTTONUP:
|
|
button = SDL_BUTTON_RIGHT;
|
|
state = SDL_RELEASED;
|
|
break;
|
|
case WM_MBUTTONDOWN:
|
|
button = SDL_BUTTON_MIDDLE;
|
|
state = SDL_PRESSED;
|
|
break;
|
|
case WM_MBUTTONUP:
|
|
button = SDL_BUTTON_MIDDLE;
|
|
state = SDL_RELEASED;
|
|
break;
|
|
NODEFAULT;
|
|
}
|
|
|
|
// mouse capture
|
|
static int outstanding_press_events;
|
|
if(state == SDL_PRESSED)
|
|
{
|
|
// grab mouse to ensure we get up events
|
|
if(++outstanding_press_events > 0)
|
|
SetCapture(hWnd);
|
|
}
|
|
else
|
|
{
|
|
// release after all up events received
|
|
if(--outstanding_press_events <= 0)
|
|
{
|
|
ReleaseCapture();
|
|
outstanding_press_events = 0;
|
|
}
|
|
}
|
|
|
|
// update button bitfield
|
|
if(state == SDL_PRESSED)
|
|
mouse_buttons |= SDL_BUTTON(button);
|
|
else
|
|
mouse_buttons &= ~SDL_BUTTON(button);
|
|
|
|
queue_button_event(button, state, x, y);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static LRESULT OnMouseWheel(HWND UNUSED(hWnd), int xPos, int yPos, int zDelta, UINT UNUSED(fwKeys))
|
|
{
|
|
uint button = (zDelta < 0)? SDL_BUTTON_WHEELDOWN : SDL_BUTTON_WHEELUP;
|
|
// SDL says this sends a down message followed by up.
|
|
queue_button_event(button, SDL_PRESSED , xPos, yPos);
|
|
queue_button_event(button, SDL_RELEASED, xPos, yPos);
|
|
return 0; // handled
|
|
}
|
|
|
|
|
|
Uint8 SDL_GetMouseState(int* x, int* y)
|
|
{
|
|
if(x)
|
|
*x = (int)mouse_x;
|
|
if(y)
|
|
*y = (int)mouse_y;
|
|
return (Uint8)mouse_buttons;
|
|
}
|
|
|
|
|
|
inline void SDL_WarpMouse(int x, int y)
|
|
{
|
|
WARN_IF_FALSE(SetCursorPos(x, y));
|
|
mouse_moved(x, y);
|
|
}
|
|
|
|
|
|
int SDL_ShowCursor(int toggle)
|
|
{
|
|
static int cursor_visible = SDL_ENABLE;
|
|
if(toggle != SDL_QUERY)
|
|
{
|
|
// only call Windows ShowCursor if changing the visibility -
|
|
// it maintains a counter.
|
|
if(cursor_visible != toggle)
|
|
{
|
|
ShowCursor(toggle);
|
|
cursor_visible = toggle;
|
|
}
|
|
}
|
|
return cursor_visible;
|
|
}
|
|
|
|
|
|
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
static LRESULT CALLBACK wndproc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
if(is_shutdown)
|
|
return DefWindowProc(hWnd, uMsg, wParam, lParam);
|
|
|
|
switch(uMsg)
|
|
{
|
|
case WM_PAINT:
|
|
PAINTSTRUCT ps;
|
|
BeginPaint(hWnd, &ps);
|
|
EndPaint(hWnd, &ps);
|
|
return 0;
|
|
|
|
case WM_ERASEBKGND:
|
|
// this indicates we allegedly erased the background;
|
|
// PAINTSTRUCT.fErase is then FALSE.
|
|
return 1;
|
|
|
|
// prevent selecting menu in fullscreen mode
|
|
case WM_NCHITTEST:
|
|
if(fullscreen)
|
|
return HTCLIENT;
|
|
break;
|
|
|
|
HANDLE_MSG(hWnd, WM_ACTIVATE, OnActivate);
|
|
|
|
case WM_DESTROY:
|
|
queue_quit_event();
|
|
break;
|
|
|
|
case WM_SYSCOMMAND:
|
|
switch(wParam)
|
|
{
|
|
// prevent moving, sizing, screensaver, and power-off in fullscreen mode
|
|
case SC_MOVE:
|
|
case SC_SIZE:
|
|
case SC_MAXIMIZE:
|
|
case SC_MONITORPOWER:
|
|
if(fullscreen)
|
|
return 1;
|
|
break;
|
|
|
|
// Alt+F4 or system menu doubleclick/exit
|
|
case SC_CLOSE:
|
|
queue_quit_event();
|
|
break;
|
|
}
|
|
break;
|
|
|
|
HANDLE_MSG(hWnd, WM_SYSKEYUP , OnKey);
|
|
HANDLE_MSG(hWnd, WM_KEYUP , OnKey);
|
|
HANDLE_MSG(hWnd, WM_SYSKEYDOWN, OnKey);
|
|
HANDLE_MSG(hWnd, WM_KEYDOWN , OnKey);
|
|
|
|
HANDLE_MSG(hWnd, WM_MOUSEWHEEL, OnMouseWheel);
|
|
|
|
// (can't use message crackers: they do not provide for passing uMsg)
|
|
case WM_LBUTTONDOWN:
|
|
case WM_LBUTTONUP:
|
|
case WM_RBUTTONDOWN:
|
|
case WM_RBUTTONUP:
|
|
case WM_MBUTTONDOWN:
|
|
case WM_MBUTTONUP:
|
|
return OnMouseButton(hWnd, uMsg, (int)(short)LOWORD(lParam), (int)(short)HIWORD(lParam), (UINT)(wParam));
|
|
|
|
default:
|
|
// can't call DefWindowProc here: some messages
|
|
// are only conditionally 'grabbed' (e.g. NCHITTEST)
|
|
break;
|
|
}
|
|
|
|
return DefWindowProc(hWnd, uMsg, wParam, lParam);
|
|
}
|
|
|
|
|
|
void SDL_PumpEvents(void)
|
|
{
|
|
// rationale: we would like to reduce CPU usage automatically if
|
|
// possible. blocking here until a message arrives would accomplish
|
|
// that, but might potentially freeze the app too long.
|
|
// instead, they should check active state and call SDL_Delay etc.
|
|
// if our window is minimized.
|
|
|
|
mouse_update(); // polled
|
|
|
|
MSG msg;
|
|
while(PeekMessageW(&msg, 0, 0, 0, PM_REMOVE))
|
|
{
|
|
DispatchMessageW(&msg);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
int SDL_PollEvent(SDL_Event* ev)
|
|
{
|
|
SDL_PumpEvents();
|
|
|
|
if(dequeue_event(ev))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int SDL_PushEvent(SDL_Event* ev)
|
|
{
|
|
queue_event(*ev);
|
|
return 0;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------------
|
|
// keyboard hook (intercepts PrintScreen and system keys, e.g. Alt+Tab)
|
|
|
|
// note: the LowLevel hooks are global, but a DLL isn't actually required
|
|
// as stated in the docs. Windows apparently calls the handler in its original
|
|
// context. see http://www.gamedev.net/community/forums/topic.asp?topic_id=255399 .
|
|
|
|
static HHOOK hKeyboard_LL_Hook = (HHOOK)0;
|
|
|
|
static LRESULT CALLBACK keyboard_ll_hook(int nCode, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
if(nCode == HC_ACTION)
|
|
{
|
|
PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT)lParam;
|
|
DWORD vk = p->vkCode;
|
|
|
|
// replace Windows PrintScreen handler
|
|
if(vk == VK_SNAPSHOT)
|
|
{
|
|
// disabled - we want the normal Windows printscreen handling to
|
|
// remain so as not to confuse artists.
|
|
#if 0
|
|
// check whether PrintScreen should be taking screenshots -- if
|
|
// not, allow the standard Windows clipboard to work
|
|
if(app_state & SDL_APPINPUTFOCUS)
|
|
{
|
|
// send to wndproc
|
|
UINT msg = (UINT)wParam;
|
|
PostMessage(hWnd, msg, vk, 0);
|
|
// specify hWnd to be safe.
|
|
// if window not yet created, it's INVALID_HANDLE_VALUE.
|
|
|
|
// don't pass it on to other handlers
|
|
return 1;
|
|
}
|
|
#endif
|
|
} // vk == VK_SNAPSHOT
|
|
}
|
|
|
|
// pass it on to other hook handlers
|
|
return CallNextHookEx(hKeyboard_LL_Hook, nCode, wParam, lParam);
|
|
}
|
|
|
|
|
|
static void enable_kbd_hook(bool enable)
|
|
{
|
|
if(enable)
|
|
{
|
|
debug_assert(hKeyboard_LL_Hook == 0);
|
|
hKeyboard_LL_Hook = SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_ll_hook, hInst, 0);
|
|
debug_assert(hKeyboard_LL_Hook != 0);
|
|
}
|
|
else
|
|
{
|
|
debug_assert(hKeyboard_LL_Hook != 0);
|
|
UnhookWindowsHookEx(hKeyboard_LL_Hook);
|
|
hKeyboard_LL_Hook = 0;
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// byte swapping
|
|
|
|
// implement only if the header hasn't mapped SDL_Swap* to intrinsics
|
|
|
|
#ifndef SDL_Swap16
|
|
u16 SDL_Swap16(const u16 x)
|
|
{
|
|
return (u16)(((x & 0xff) << 8) | (x >> 8));
|
|
}
|
|
#endif
|
|
|
|
#ifndef SDL_Swap32
|
|
u32 SDL_Swap32(const u32 x)
|
|
{
|
|
return (x << 24) |
|
|
(x >> 24) |
|
|
((x << 8) & 0x00ff0000) |
|
|
((x >> 8) & 0x0000ff00);
|
|
}
|
|
#endif
|
|
|
|
#ifndef SDL_Swap64
|
|
u64 SDL_Swap64(const u64 x)
|
|
{
|
|
const u32 lo = (u32)(x & 0xffffffff);
|
|
const u32 hi = (u32)(x >> 32);
|
|
u64 ret = SDL_Swap32(lo);
|
|
ret <<= 32;
|
|
// careful: must shift var of type u64, not u32
|
|
ret |= SDL_Swap32(hi);
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// multithread support
|
|
|
|
// semaphores
|
|
// note: implementing these in terms of pthread sem_t doesn't help;
|
|
// this wrapper is very close to the Win32 routines.
|
|
|
|
union HANDLE_sem
|
|
{
|
|
HANDLE h;
|
|
SDL_sem* s;
|
|
};
|
|
|
|
SDL_sem* SDL_CreateSemaphore(int cnt)
|
|
{
|
|
HANDLE_sem u;
|
|
u.h = CreateSemaphore(0, cnt, 0x7fffffff, 0);
|
|
return u.s;
|
|
}
|
|
|
|
inline void SDL_DestroySemaphore(SDL_sem* sem)
|
|
{
|
|
HANDLE_sem u;
|
|
u.s = sem;
|
|
CloseHandle(u.h);
|
|
}
|
|
|
|
int SDL_SemPost(SDL_sem* sem)
|
|
{
|
|
HANDLE_sem u;
|
|
u.s = sem;
|
|
return ReleaseSemaphore(u.h, 1, 0);
|
|
}
|
|
|
|
int SDL_SemWait(SDL_sem* sem)
|
|
{
|
|
HANDLE_sem u;
|
|
u.s = sem;
|
|
return WaitForSingleObject(u.h, INFINITE);
|
|
}
|
|
|
|
|
|
// threads
|
|
// users don't need to allocate SDL_Thread variables, so type = void
|
|
// API returns SDL_Thread*, which is the HANDLE value itself.
|
|
//
|
|
// we go through hoops to avoid type cast warnings;
|
|
// a simple union { pthread_t; SDL_Thread* } yields "uninitialized"
|
|
// warnings in VC2005, so we coerce values directly.
|
|
cassert(sizeof(pthread_t) == sizeof(SDL_Thread*));
|
|
|
|
SDL_Thread* SDL_CreateThread(int (*func)(void*), void* param)
|
|
{
|
|
pthread_t thread = 0;
|
|
if(pthread_create(&thread, 0, (void* (*)(void*))func, param) < 0)
|
|
return 0;
|
|
return *(SDL_Thread**)&thread;
|
|
}
|
|
|
|
int SDL_KillThread(SDL_Thread* thread)
|
|
{
|
|
pthread_cancel(*(pthread_t*)&thread);
|
|
return 0;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// misc API
|
|
|
|
void SDL_WM_SetCaption(const char* title, const char* icon)
|
|
{
|
|
WARN_IF_FALSE(SetWindowText(hWnd, title));
|
|
|
|
// real SDL ignores this parameter, so we will follow suit.
|
|
UNUSED2(icon);
|
|
}
|
|
|
|
|
|
inline u32 SDL_GetTicks()
|
|
{
|
|
return GetTickCount();
|
|
}
|
|
|
|
|
|
inline void SDL_Delay(Uint32 ms)
|
|
{
|
|
Sleep(ms);
|
|
}
|
|
|
|
|
|
inline void* SDL_GL_GetProcAddress(const char* name)
|
|
{
|
|
return wglGetProcAddress(name);
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// init/shutdown
|
|
|
|
static LibError wsdl_init()
|
|
{
|
|
hInst = GetModuleHandle(0);
|
|
|
|
// redirect stdout to file (otherwise it's simply ignored on Win32).
|
|
// notes:
|
|
// - use full path for safety (works even if someone does chdir)
|
|
// - SDL does this in its WinMain hook. we need to do this here
|
|
// (before main is called) instead of in SDL_Init to completely
|
|
// emulate SDL; bonus: we don't miss any output before SDL_Init.
|
|
char path[MAX_PATH];
|
|
snprintf(path, ARRAY_SIZE(path), "%s\\stdout.txt", win_exe_dir);
|
|
// ignore BoundsChecker warnings here. subsystem is set to "Windows"
|
|
// to avoid the OS opening a console on startup (ugly). that means
|
|
// stdout isn't associated with a lowio handle; _close ends up
|
|
// getting called with fd = -1. oh well, nothing we can do.
|
|
FILE* f = freopen(path, "wt", stdout);
|
|
if(!f)
|
|
debug_warn("stdout freopen failed");
|
|
|
|
#if CONFIG_PARANOIA
|
|
// disable buffering, so that no writes are lost even if the program
|
|
// crashes. only enabled in full debug mode because this is really slow!
|
|
setvbuf(stdout, 0, _IONBF, 0);
|
|
#endif
|
|
|
|
enable_kbd_hook(true);
|
|
|
|
return ERR_OK;
|
|
}
|
|
|
|
|
|
static LibError wsdl_shutdown()
|
|
{
|
|
is_shutdown = true;
|
|
|
|
// redirected to stdout.txt in SDL_Init;
|
|
// close to avoid BoundsChecker warning.
|
|
fclose(stdout);
|
|
|
|
gamma_swap(GAMMA_RESTORE_ORIGINAL);
|
|
|
|
video_shutdown();
|
|
|
|
enable_kbd_hook(false);
|
|
|
|
return ERR_OK;
|
|
}
|
|
|
|
|
|
// these are placebos. since some init needs to happen before main(),
|
|
// we take care of it all in the module init/shutdown hooks.
|
|
|
|
int SDL_Init(Uint32 UNUSED(flags))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void SDL_Quit()
|
|
{
|
|
}
|