This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_win32events.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
#include "SDL_win32video.h"
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#include "SDL_version.h"
#include "SDL_syswm.h"
#include "SDL_vkeys.h"
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#include "../../events/SDL_events_c.h"
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/*#define WMMSG_DEBUG*/
#ifdef WMMSG_DEBUG
#include "wmmsg.h"
#endif
/* Masks for processing the windows KEYDOWN and KEYUP messages */
#define REPEATED_KEYMASK (1<<30)
#define EXTENDED_KEYMASK (1<<24)
static SDLKey
TranslateKey(WPARAM vkey)
{
SDLKey key;
/* FIXME: Assign vkey directly to key if in ASCII range */
switch (vkey) {
case VK_BACK:
key = SDLK_BACKSPACE;
break;
case VK_TAB:
key = SDLK_TAB;
break;
case VK_CLEAR:
key = SDLK_CLEAR;
break;
case VK_RETURN:
key = SDLK_RETURN;
break;
case VK_PAUSE:
key = SDLK_PAUSE;
break;
case VK_ESCAPE:
key = SDLK_ESCAPE;
break;
case VK_SPACE:
key = SDLK_SPACE;
break;
case VK_APOSTROPHE:
key = SDLK_QUOTE;
break;
case VK_COMMA:
key = SDLK_COMMA;
break;
case VK_MINUS:
key = SDLK_MINUS;
break;
case VK_PERIOD:
key = SDLK_PERIOD;
break;
case VK_SLASH:
key = SDLK_SLASH;
break;
case VK_0:
key = SDLK_0;
break;
case VK_1:
key = SDLK_1;
break;
case VK_2:
key = SDLK_2;
break;
case VK_3:
key = SDLK_3;
break;
case VK_4:
key = SDLK_4;
break;
case VK_5:
key = SDLK_5;
break;
case VK_6:
key = SDLK_6;
break;
case VK_7:
key = SDLK_7;
break;
case VK_8:
key = SDLK_8;
break;
case VK_9:
key = SDLK_9;
break;
case VK_SEMICOLON:
key = SDLK_SEMICOLON;
break;
case VK_EQUALS:
key = SDLK_EQUALS;
break;
case VK_LBRACKET:
key = SDLK_LEFTBRACKET;
break;
case VK_BACKSLASH:
key = SDLK_BACKSLASH;
break;
case VK_OEM_102:
key = SDLK_LESS;
break;
case VK_RBRACKET:
key = SDLK_RIGHTBRACKET;
break;
case VK_GRAVE:
key = SDLK_BACKQUOTE;
break;
case VK_BACKTICK:
key = SDLK_BACKQUOTE;
break;
case VK_A:
key = SDLK_a;
break;
case VK_B:
key = SDLK_b;
break;
case VK_C:
key = SDLK_c;
break;
case VK_D:
key = SDLK_d;
break;
case VK_E:
key = SDLK_e;
break;
case VK_F:
key = SDLK_f;
break;
case VK_G:
key = SDLK_g;
break;
case VK_H:
key = SDLK_h;
break;
case VK_I:
key = SDLK_i;
break;
case VK_J:
key = SDLK_j;
break;
case VK_K:
key = SDLK_k;
break;
case VK_L:
key = SDLK_l;
break;
case VK_M:
key = SDLK_m;
break;
case VK_N:
key = SDLK_n;
break;
case VK_O:
key = SDLK_o;
break;
case VK_P:
key = SDLK_p;
break;
case VK_Q:
key = SDLK_q;
break;
case VK_R:
key = SDLK_r;
break;
case VK_S:
key = SDLK_s;
break;
case VK_T:
key = SDLK_t;
break;
case VK_U:
key = SDLK_u;
break;
case VK_V:
key = SDLK_v;
break;
case VK_W:
key = SDLK_w;
break;
case VK_X:
key = SDLK_x;
break;
case VK_Y:
key = SDLK_y;
break;
case VK_Z:
key = SDLK_z;
break;
case VK_DELETE:
key = SDLK_DELETE;
break;
case VK_NUMPAD0:
key = SDLK_KP0;
break;
case VK_NUMPAD1:
key = SDLK_KP1;
break;
case VK_NUMPAD2:
key = SDLK_KP2;
break;
case VK_NUMPAD3:
key = SDLK_KP3;
break;
case VK_NUMPAD4:
key = SDLK_KP4;
break;
case VK_NUMPAD5:
key = SDLK_KP5;
break;
case VK_NUMPAD6:
key = SDLK_KP6;
break;
case VK_NUMPAD7:
key = SDLK_KP7;
break;
case VK_NUMPAD8:
key = SDLK_KP8;
break;
case VK_NUMPAD9:
key = SDLK_KP9;
break;
case VK_DECIMAL:
key = SDLK_KP_PERIOD;
break;
case VK_DIVIDE:
key = SDLK_KP_DIVIDE;
break;
case VK_MULTIPLY:
key = SDLK_KP_MULTIPLY;
break;
case VK_SUBTRACT:
key = SDLK_KP_MINUS;
break;
case VK_ADD:
key = SDLK_KP_PLUS;
break;
case VK_UP:
key = SDLK_UP;
break;
case VK_DOWN:
key = SDLK_DOWN;
break;
case VK_RIGHT:
key = SDLK_RIGHT;
break;
case VK_LEFT:
key = SDLK_LEFT;
break;
case VK_INSERT:
key = SDLK_INSERT;
break;
case VK_HOME:
key = SDLK_HOME;
break;
case VK_END:
key = SDLK_END;
break;
case VK_PRIOR:
key = SDLK_PAGEUP;
break;
case VK_NEXT:
key = SDLK_PAGEDOWN;
break;
case VK_F1:
key = SDLK_F1;
break;
case VK_F2:
key = SDLK_F2;
break;
case VK_F3:
key = SDLK_F3;
break;
case VK_F4:
key = SDLK_F4;
break;
case VK_F5:
key = SDLK_F5;
break;
case VK_F6:
key = SDLK_F6;
break;
case VK_F7:
key = SDLK_F7;
break;
case VK_F8:
key = SDLK_F8;
break;
case VK_F9:
key = SDLK_F9;
break;
case VK_F10:
key = SDLK_F10;
break;
case VK_F11:
key = SDLK_F11;
break;
case VK_F12:
key = SDLK_F12;
break;
case VK_F13:
key = SDLK_F13;
break;
case VK_F14:
key = SDLK_F14;
break;
case VK_F15:
key = SDLK_F15;
break;
case VK_NUMLOCK:
key = SDLK_NUMLOCK;
break;
case VK_CAPITAL:
key = SDLK_CAPSLOCK;
break;
case VK_SCROLL:
key = SDLK_SCROLLOCK;
break;
case VK_RSHIFT:
key = SDLK_RSHIFT;
break;
case VK_LSHIFT:
key = SDLK_LSHIFT;
break;
case VK_RCONTROL:
key = SDLK_RCTRL;
break;
case VK_LCONTROL:
key = SDLK_LCTRL;
break;
case VK_RMENU:
key = SDLK_RALT;
break;
case VK_LMENU:
key = SDLK_LALT;
break;
case VK_RWIN:
key = SDLK_RSUPER;
break;
case VK_LWIN:
key = SDLK_LSUPER;
break;
case VK_HELP:
key = SDLK_HELP;
break;
case VK_PRINT:
key = SDLK_PRINT;
break;
case VK_SNAPSHOT:
key = SDLK_PRINT;
break;
case VK_CANCEL:
key = SDLK_BREAK;
break;
case VK_APPS:
key = SDLK_MENU;
break;
default:
key = SDLK_UNKNOWN;
break;
}
return key;
}
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LRESULT CALLBACK
WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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SDL_WindowData *data;
/* Get the window data for the window */
data = (SDL_WindowData *) GetProp(hwnd, TEXT("SDL_WindowData"));
if (!data) {
return CallWindowProc(DefWindowProc, hwnd, msg, wParam, lParam);
}
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#ifdef WMMSG_DEBUG
fprintf(stderr, "Received windows message: ");
if (msg > MAX_WMMSG) {
fprintf(stderr, "%d", msg);
} else {
fprintf(stderr, "%s", wmtab[msg]);
}
fprintf(stderr, " -- 0x%X, 0x%X\n", wParam, lParam);
#endif
/* Send a SDL_SYSWMEVENT if the application wants them */
if (SDL_ProcessEvents[SDL_SYSWMEVENT] == SDL_ENABLE) {
SDL_SysWMmsg wmmsg;
SDL_VERSION(&wmmsg.version);
wmmsg.hwnd = hwnd;
wmmsg.msg = msg;
wmmsg.wParam = wParam;
wmmsg.lParam = lParam;
SDL_SendSysWMEvent(&wmmsg);
}
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switch (msg) {
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case WM_ACTIVATE:
{
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int index;
SDL_Keyboard *keyboard;
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BOOL minimized;
minimized = HIWORD(wParam);
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index = data->videodata->keyboard;
keyboard = SDL_GetKeyboard(index);
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if (!minimized && (LOWORD(wParam) != WA_INACTIVE)) {
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SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN,
0, 0);
SDL_SendWindowEvent(data->windowID,
SDL_WINDOWEVENT_RESTORED, 0, 0);
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if (IsZoomed(hwnd)) {
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SDL_SendWindowEvent(data->windowID,
SDL_WINDOWEVENT_MAXIMIZED, 0, 0);
}
if (keyboard && keyboard->focus != data->windowID) {
SDL_SetKeyboardFocus(index, data->windowID);
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}
/* FIXME: Restore mode state (mode, gamma, grab) */
/* FIXME: Update keyboard state */
} else {
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if (keyboard && keyboard->focus == data->windowID) {
SDL_SetKeyboardFocus(index, 0);
}
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if (minimized) {
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SDL_SendWindowEvent(data->windowID,
SDL_WINDOWEVENT_MINIMIZED, 0, 0);
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}
/* FIXME: Restore desktop state (mode, gamma, grab) */
}
return (0);
}
break;
case WM_MOUSEMOVE:
{
int index;
SDL_Mouse *mouse;
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int x, y;
index = data->videodata->mouse;
mouse = SDL_GetMouse(index);
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if (mouse->focus != data->windowID) {
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TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
TrackMouseEvent(&tme);
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SDL_SetMouseFocus(index, data->windowID);
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/* mouse has moved within the window */
x = LOWORD(lParam);
y = HIWORD(lParam);
if (mouse->relative_mode) {
int w, h;
POINT center;
SDL_GetWindowSize(data->windowID, &w, &h);
center.x = (w / 2);
center.y = (h / 2);
x -= center.x;
y -= center.y;
if (x || y) {
ClientToScreen(hwnd, ¢er);
SetCursorPos(center.x, center.y);
SDL_SendMouseMotion(index, 1, x, y);
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} else {
SDL_SendMouseMotion(index, 0, x, y);
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}
}
return (0);
case WM_MOUSELEAVE:
{
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int index;
SDL_Mouse *mouse;
index = data->videodata->mouse;
mouse = SDL_GetMouse(index);
if (mouse->focus == data->windowID) {
SDL_SetMouseFocus(index, 0);
}
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}
return (0);
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP:
{
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int index;
SDL_Mouse *mouse;
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Uint8 button, state;
/* DJM:
We want the SDL window to take focus so that
it acts like a normal windows "component"
(e.g. gains keyboard focus on a mouse click).
*/
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SetFocus(hwnd);
index = data->videodata->mouse;
mouse = SDL_GetMouse(index);
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/* Figure out which button to use */
switch (msg) {
case WM_LBUTTONDOWN:
button = SDL_BUTTON_LEFT;
state = SDL_PRESSED;
break;
case WM_LBUTTONUP:
button = SDL_BUTTON_LEFT;
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;
case WM_RBUTTONDOWN:
button = SDL_BUTTON_RIGHT;
state = SDL_PRESSED;
break;
case WM_RBUTTONUP:
button = SDL_BUTTON_RIGHT;
state = SDL_RELEASED;
break;
default:
/* Eh? Unknown button? */
return (0);
}
if (state == SDL_PRESSED) {
/* Grab mouse so we get up events */
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if (++data->mouse_pressed > 0) {
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SetCapture(hwnd);
}
} else {
/* Release mouse after all up events */
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if (--data->mouse_pressed <= 0) {
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ReleaseCapture();
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data->mouse_pressed = 0;
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if (!mouse->relative_mode) {
int x, y;
x = LOWORD(lParam);
y = HIWORD(lParam);
SDL_SendMouseMotion(index, 0, x, y);
}
SDL_SendMouseButton(index, state, button);
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return (0);
case WM_MOUSEWHEEL:
{
int index;
int motion = (short) HIWORD(wParam);
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index = data->videodata->mouse;
SDL_SendMouseWheel(index, motion);
}
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return (0);
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case WM_SYSKEYDOWN:
case WM_KEYDOWN:
{
int index;
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/* Ignore repeated keys */
if (lParam & REPEATED_KEYMASK) {
return (0);
}
index = data->videodata->keyboard;
switch (wParam) {
case VK_CONTROL:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RCONTROL;
else
wParam = VK_LCONTROL;
break;
case VK_SHIFT:
/* EXTENDED trick doesn't work here */
{
Uint8 *state = SDL_GetKeyState(NULL);
if (state[SDLK_LSHIFT] == SDL_RELEASED
&& (GetKeyState(VK_LSHIFT) & 0x8000)) {
wParam = VK_LSHIFT;
} else if (state[SDLK_RSHIFT] == SDL_RELEASED
&& (GetKeyState(VK_RSHIFT) & 0x8000)) {
wParam = VK_RSHIFT;
} else {
/* Probably a key repeat */
return (0);
}
}
break;
case VK_MENU:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RMENU;
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wParam = VK_LMENU;
break;
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SDL_SendKeyboardKey(index, SDL_PRESSED, (Uint8) HIWORD(lParam),
TranslateKey(wParam));
}
return (0);
case WM_SYSKEYUP:
case WM_KEYUP:
{
int index;
index = data->videodata->keyboard;
switch (wParam) {
case VK_CONTROL:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RCONTROL;
else
wParam = VK_LCONTROL;
break;
case VK_SHIFT:
/* EXTENDED trick doesn't work here */
{
Uint8 *state = SDL_GetKeyState(NULL);
if (state[SDLK_LSHIFT] == SDL_PRESSED
&& !(GetKeyState(VK_LSHIFT) & 0x8000)) {
wParam = VK_LSHIFT;
} else if (state[SDLK_RSHIFT] == SDL_PRESSED
&& !(GetKeyState(VK_RSHIFT) & 0x8000)) {
wParam = VK_RSHIFT;
} else {
/* Probably a key repeat */
return (0);
}
}
break;
case VK_MENU:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RMENU;
else
wParam = VK_LMENU;
break;
}
/* Windows only reports keyup for print screen */
if (wParam == VK_SNAPSHOT
&& SDL_GetKeyState(NULL)[SDLK_PRINT] == SDL_RELEASED) {
SDL_SendKeyboardKey(index, SDL_PRESSED,
(Uint8) HIWORD(lParam),
TranslateKey(wParam));
}
SDL_SendKeyboardKey(index, SDL_RELEASED, (Uint8) HIWORD(lParam),
TranslateKey(wParam));
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}
return (0);
case WM_GETMINMAXINFO:
{
MINMAXINFO *info;
RECT size;
int x, y;
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int style;
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/* If we allow resizing, let the resize happen naturally */
if (SDL_GetWindowFlags(data->windowID) & SDL_WINDOW_RESIZABLE) {
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return (0);
}
/* Get the current position of our window */
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GetWindowRect(hwnd, &size);
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x = size.left;
y = size.top;
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/* Calculate current size of our window */
SDL_GetWindowSize(data->windowID, &w, &h);
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size.top = 0;
size.left = 0;
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size.bottom = h;
size.right = w;
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/* DJM - according to the docs for GetMenu(), the
return value is undefined if hwnd is a child window.
Aparently it's too difficult for MS to check
inside their function, so I have to do it here.
*/
style = GetWindowLong(hwnd, GWL_STYLE);
AdjustWindowRect(&size,
style,
style & WS_CHILDWINDOW ? FALSE : GetMenu(hwnd) !=
NULL);
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w = size.right - size.left;
h = size.bottom - size.top;
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734
735
/* Fix our size to the current size */
info = (MINMAXINFO *) lParam;
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737
info->ptMaxSize.x = w;
info->ptMaxSize.y = h;
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739
info->ptMaxPosition.x = x;
info->ptMaxPosition.y = y;
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741
742
743
info->ptMinTrackSize.x = w;
info->ptMinTrackSize.y = h;
info->ptMaxTrackSize.x = w;
info->ptMaxTrackSize.y = h;
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745
746
747
748
}
return (0);
case WM_WINDOWPOSCHANGED:
{
749
750
RECT rect;
int x, y;
751
752
int w, h;
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754
755
756
757
758
GetClientRect(hwnd, &rect);
ClientToScreen(hwnd, (LPPOINT) & rect);
ClientToScreen(hwnd, (LPPOINT) & rect + 1);
if (SDL_GetWindowFlags(data->windowID) & SDL_WINDOW_INPUT_GRABBED) {
ClipCursor(&rect);
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762
763
764
765
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767
768
769
x = rect.left;
y = rect.top;
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_MOVED, x, y);
w = rect.right - rect.left;
h = rect.bottom - rect.top;
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_RESIZED, w,
h);
}
770
771
772
773
break;
case WM_SETCURSOR:
{
774
775
776
777
778
779
780
781
782
/*
Uint16 hittest;
hittest = LOWORD(lParam);
if (hittest == HTCLIENT) {
SetCursor(SDL_hcursor);
return (TRUE);
}
*/
783
784
785
786
787
788
}
break;
/* We are about to get palette focus! */
case WM_QUERYNEWPALETTE:
{
789
790
791
792
/*
WIN_RealizePalette(current_video);
return (TRUE);
*/
793
794
795
796
797
798
}
break;
/* Another application changed the palette */
case WM_PALETTECHANGED:
{
799
800
801
/*
WIN_PaletteChanged(current_video, (HWND) wParam);
*/
802
803
804
805
806
807
}
break;
/* We were occluded, refresh our display */
case WM_PAINT:
{
808
809
810
811
812
RECT rect;
if (GetUpdateRect(hwnd, &rect, FALSE)) {
ValidateRect(hwnd, &rect);
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_EXPOSED,
0, 0);
813
814
815
816
}
}
return (0);
817
case WM_SYSCOMMAND:
819
820
821
822
823
824
825
826
/* Don't start the screensaver or blank the monitor in fullscreen apps */
if ((wParam & 0xFFF0) == SC_SCREENSAVE ||
(wParam & 0xFFF0) == SC_MONITORPOWER) {
if (SDL_GetWindowFlags(data->windowID) &
SDL_WINDOW_FULLSCREEN) {
return (0);
}
}
829
830
831
case WM_CLOSE:
{
832
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_CLOSE, 0, 0);
833
834
835
}
return (0);
}
836
return CallWindowProc(data->wndproc, hwnd, msg, wParam, lParam);
840
WIN_PumpEvents(_THIS)
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
MSG msg;
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
static int app_registered = 0;
LPTSTR SDL_Appname = NULL;
Uint32 SDL_Appstyle = 0;
HINSTANCE SDL_Instance = NULL;
/* Register the class for this application */
int
SDL_RegisterApp(char *name, Uint32 style, void *hInst)
{
WNDCLASS class;
/* Only do this once... */
if (app_registered) {
++app_registered;
return (0);
}
if (!name && !SDL_Appname) {
name = "SDL_app";
SDL_Appstyle = (CS_BYTEALIGNCLIENT | CS_OWNDC);
SDL_Instance = hInst ? hInst : GetModuleHandle(NULL);
}
if (name) {
872
SDL_Appname = WIN_UTF8ToString(name);
873
874
875
876
877
878
879
880
881
882
883
884
885
SDL_Appstyle = style;
SDL_Instance = hInst ? hInst : GetModuleHandle(NULL);
}
/* Register the application class */
class.hCursor = NULL;
class.hIcon = LoadImage(SDL_Instance, SDL_Appname,
IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
class.lpszMenuName = NULL;
class.lpszClassName = SDL_Appname;
class.hbrBackground = NULL;
class.hInstance = SDL_Instance;
class.style = SDL_Appstyle;
886
class.lpfnWndProc = DefWindowProc;
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
class.cbWndExtra = 0;
class.cbClsExtra = 0;
if (!RegisterClass(&class)) {
SDL_SetError("Couldn't register application class");
return (-1);
}
app_registered = 1;
return (0);
}
/* Unregisters the windowclass registered in SDL_RegisterApp above. */
void
SDL_UnregisterApp()
{
WNDCLASS class;
/* SDL_RegisterApp might not have been called before */
if (!app_registered) {
return;
}
--app_registered;
if (app_registered == 0) {
/* Check for any registered window classes. */
if (GetClassInfo(SDL_Instance, SDL_Appname, &class)) {
UnregisterClass(SDL_Appname, SDL_Instance);
}
SDL_free(SDL_Appname);
SDL_Appname = NULL;
}
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
/* Sets an error message based on GetLastError() */
void
WIN_SetError(const char *prefix)
{
TCHAR buffer[1024];
char *message;
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
GetLastError(), 0, buffer, SDL_arraysize(buffer), NULL);
message = WIN_StringToUTF8(buffer);
SDL_SetError("%s%s%s", prefix ? prefix : "", prefix ? ":" : "", message);
SDL_free(message);
}
935
/* vi: set ts=4 sw=4 expandtab: */