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SDL_win32events.c
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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"
#include "../../events/SDL_events_c.h"
LRESULT CALLBACK
WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
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);
}
#if 0
switch (msg) {
case WM_ACTIVATE:
{
BOOL minimized;
minimized = HIWORD(wParam);
if (!minimized && (LOWORD(wParam) != WA_INACTIVE)) {
SDL_PrivateWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN,
0, 0);
SDL_PrivateWindowEvent(data->windowID,
SDL_WINDOWEVENT_RESTORED, 0, 0);
if (IsZoomed(hwnd)) {
SDL_PrivateWindowEvent(data->windowID,
SDL_WINDOWEVENT_MAXIMIZED, 0, 0);
}
SDL_PrivateWindowEvent(data->windowID,
SDL_WINDOWEVENT_FOCUS_GAINED, 0, 0);
/* FIXME: Restore mode state (mode, gamma, grab) */
/* FIXME: Update keyboard state */
} else {
SDL_PrivateWindowEvent(data->windowID,
SDL_WINDOWEVENT_FOCUS_LOST, 0, 0);
if (minimized) {
SDL_PrivateWindowEvent(data->windowID,
SDL_WINDOWEVENT_MINIMIZED, 0, 0);
}
/* FIXME: Restore desktop state (mode, gamma, grab) */
}
return (0);
}
break;
case WM_MOUSEMOVE:
{
int index;
SDL_Mouse *mouse;
if (!
(SDL_GetWindowFlags(data->windowID) & SDL_WINDOW_MOUSE_FOCUS))
{
/* mouse has entered the window */
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
TrackMouseEvent(&tme);
SDL_PrivateWindowEvent(data->windowID, SDL_WINDOWEVENT_ENTER,
0, 0);
}
index = data->videodata->mouse;
mouse = SDL_GetMouse(index);
if (mouse) {
int x, y;
/* 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(SDL_Window, ¢er);
SetCursorPos(center.x, center.y);
SDL_SendMouseMotion(index, data->windowID, 1, x, y);
}
} else {
SDL_SendMouseMotion(index, data->windowID, 0, x, y);
}
}
}
return (0);
case WM_MOUSELEAVE:
{
SDL_PrivateWindowEvent(data->windowID, SDL_WINDOWEVENT_LEAVE, 0,
0);
}
return (0);
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP:
{
int x, y;
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).
*/
SetFocus(SDL_Window);
/* 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 */
if (++mouse_pressed > 0) {
SetCapture(hwnd);
}
} else {
/* Release mouse after all up events */
if (--mouse_pressed <= 0) {
ReleaseCapture();
mouse_pressed = 0;
}
}
x = LOWORD(lParam);
y = HIWORD(lParam);
#ifdef _WIN32_WCE
if (SDL_VideoSurface)
GapiTransform(this->hidden->userOrientation,
this->hidden->hiresFix, &x, &y);
#endif
posted = SDL_PrivateMouseButton(state, button, x, y);
}
return (0);
#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
case WM_MOUSEWHEEL:
if (SDL_VideoSurface && !DINPUT_FULLSCREEN()) {
int move = (short) HIWORD(wParam);
if (move) {
Uint8 button;
if (move > 0)
button = SDL_BUTTON_WHEELUP;
else
button = SDL_BUTTON_WHEELDOWN;
posted = SDL_PrivateMouseButton(SDL_PRESSED, button, 0, 0);
posted |= SDL_PrivateMouseButton(SDL_RELEASED, button, 0, 0);
}
}
return (0);
#endif
#ifdef WM_GETMINMAXINFO
/* This message is sent as a way for us to "check" the values
* of a position change. If we don't like it, we can adjust
* the values before they are changed.
*/
case WM_GETMINMAXINFO:
{
MINMAXINFO *info;
RECT size;
int x, y;
int style;
int width;
int height;
/* We don't want to clobber an internal resize */
if (SDL_resizing)
return (0);
/* We allow resizing with the SDL_RESIZABLE flag */
if (SDL_PublicSurface
&& (SDL_PublicSurface->flags & SDL_RESIZABLE)) {
return (0);
}
/* Get the current position of our window */
GetWindowRect(SDL_Window, &size);
x = size.left;
y = size.top;
/* Calculate current width and height of our window */
size.top = 0;
size.left = 0;
if (SDL_PublicSurface != NULL) {
size.bottom = SDL_PublicSurface->h;
size.right = SDL_PublicSurface->w;
} else {
size.bottom = 0;
size.right = 0;
}
/* 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);
width = size.right - size.left;
height = size.bottom - size.top;
/* Fix our size to the current size */
info = (MINMAXINFO *) lParam;
info->ptMaxSize.x = width;
info->ptMaxSize.y = height;
info->ptMaxPosition.x = x;
info->ptMaxPosition.y = y;
info->ptMinTrackSize.x = width;
info->ptMinTrackSize.y = height;
info->ptMaxTrackSize.x = width;
info->ptMaxTrackSize.y = height;
}
return (0);
#endif /* WM_GETMINMAXINFO */
case WM_WINDOWPOSCHANGED:
{
SDL_VideoDevice *this = current_video;
int w, h;
GetClientRect(SDL_Window, &SDL_bounds);
ClientToScreen(SDL_Window, (LPPOINT) & SDL_bounds);
ClientToScreen(SDL_Window, (LPPOINT) & SDL_bounds + 1);
if (!SDL_resizing && !IsZoomed(SDL_Window) &&
SDL_PublicSurface
&& !(SDL_PublicSurface->flags & SDL_FULLSCREEN)) {
SDL_windowX = SDL_bounds.left;
SDL_windowY = SDL_bounds.top;
}
w = SDL_bounds.right - SDL_bounds.left;
h = SDL_bounds.bottom - SDL_bounds.top;
if (this->input_grab != SDL_GRAB_OFF) {
ClipCursor(&SDL_bounds);
}
if (SDL_PublicSurface
&& (SDL_PublicSurface->flags & SDL_RESIZABLE)) {
SDL_PrivateResize(w, h);
}
}
break;
/* We need to set the cursor */
case WM_SETCURSOR:
{
Uint16 hittest;
hittest = LOWORD(lParam);
if (hittest == HTCLIENT) {
SetCursor(SDL_hcursor);
return (TRUE);
}
}
break;
/* We are about to get palette focus! */
case WM_QUERYNEWPALETTE:
{
WIN_RealizePalette(current_video);
return (TRUE);
}
break;
/* Another application changed the palette */
case WM_PALETTECHANGED:
{
WIN_PaletteChanged(current_video, (HWND) wParam);
}
break;
/* We were occluded, refresh our display */
case WM_PAINT:
{
HDC hdc;
PAINTSTRUCT ps;
hdc = BeginPaint(SDL_Window, &ps);
if (current_video->screen &&
!(current_video->screen->flags & SDL_INTERNALOPENGL)) {
WIN_WinPAINT(current_video, hdc);
}
EndPaint(SDL_Window, &ps);
}
return (0);
/* DJM: Send an expose event in this case */
case WM_ERASEBKGND:
{
posted = SDL_PrivateExpose();
}
return (0);
case WM_CLOSE:
{
if ((posted = SDL_PrivateQuit()))
PostQuitMessage(0);
}
return (0);
case WM_DESTROY:
{
PostQuitMessage(0);
}
return (0);
}
#endif
return CallWindowProc(data->wndproc, hwnd, msg, wParam, lParam);
}
void
WIN_PumpEvents(_THIS)
{
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) {
SDL_Appname = WIN_UTF8ToString(name);
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;
class.lpfnWndProc = DefWindowProc;
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;
}
}
/* 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);
}
/* vi: set ts=4 sw=4 expandtab: */