src/video/wincommon/SDL_syswm.c
author Ryan C. Gordon <icculus@icculus.org>
Fri, 16 Feb 2007 04:56:17 +0000
branchSDL-1.2
changeset 3919 d13618a935a2
parent 3869 b0955ae208f3
child 4088 cbe2f23a1c2b
permissions -rw-r--r--
SDL_SetWindowCaption() on Windows: try to use the unicode SetWindowText() if it exists in user32.dll, and fallback to converting to the current codepage (instead of latin1) if not. Fixes Bugzilla #365.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include "SDL_version.h"
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#include "SDL_video.h"
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#include "SDL_loadso.h"
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#include "SDL_syswm.h"
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#include "../SDL_pixels_c.h"
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#include "../SDL_cursor_c.h"
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#include "SDL_syswm_c.h"
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#include "SDL_wingl_c.h"
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#ifdef _WIN32_WCE
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#define DISABLE_ICON_SUPPORT
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#endif
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/* The screen icon -- needs to be freed on SDL_VideoQuit() */
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HICON   screen_icn = NULL;
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/* Win32 icon mask semantics are different from those of SDL:
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     SDL applies the mask to the icon and copies result to desktop.
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     Win32 applies the mask to the desktop and XORs the icon on.
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   This means that the SDL mask needs to be applied to the icon and
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   then inverted and passed to Win32.
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*/
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void WIN_SetWMIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
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{
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#ifdef DISABLE_ICON_SUPPORT
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	return;
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#else
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	SDL_Palette *pal_256;
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	SDL_Surface *icon_256;
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	Uint8 *pdata, *pwin32;
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	Uint8 *mdata, *mwin32, m = 0;
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	int icon_len;
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	int icon_plen;
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	int icon_mlen;
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	int icon_pitch;
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	int mask_pitch;
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	SDL_Rect bounds;
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	int i, skip;
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	int row, col;
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	struct /* quasi-BMP format */ Win32Icon {
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		Uint32 biSize;
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		Sint32 biWidth;
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		Sint32 biHeight;
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		Uint16 biPlanes;
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		Uint16 biBitCount;
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		Uint32 biCompression;
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		Uint32 biSizeImage;
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		Sint32 biXPelsPerMeter;
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		Sint32 biYPelsPerMeter;
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		Uint32 biClrUsed;
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		Uint32 biClrImportant;
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		struct /* RGBQUAD -- note it's BGR ordered */ {
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			Uint8 rgbBlue;
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			Uint8 rgbGreen;
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			Uint8 rgbRed;
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			Uint8 rgbReserved;
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		} biColors[256];
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		/* Pixels:
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		Uint8 pixels[]
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		*/
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		/* Mask:
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		Uint8 mask[]
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		*/
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	} *icon_win32;
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	/* Allocate the win32 bmp icon and set everything to zero */
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	icon_pitch = ((icon->w+3)&~3);
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	mask_pitch = ((icon->w+7)/8);
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	icon_plen = icon->h*icon_pitch;
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	icon_mlen = icon->h*mask_pitch;
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	icon_len = sizeof(*icon_win32)+icon_plen+icon_mlen;
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	icon_win32 = (struct Win32Icon *)SDL_stack_alloc(Uint8, icon_len);
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	if ( icon_win32 == NULL ) {
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		return;
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	}
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	SDL_memset(icon_win32, 0, icon_len);
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	/* Set the basic BMP parameters */
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	icon_win32->biSize = sizeof(*icon_win32)-sizeof(icon_win32->biColors);
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	icon_win32->biWidth = icon->w;
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	icon_win32->biHeight = icon->h*2;
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	icon_win32->biPlanes = 1;
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	icon_win32->biBitCount = 8;
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	icon_win32->biSizeImage = icon_plen+icon_mlen;
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	/* Allocate a standard 256 color icon surface */
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	icon_256 = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
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					 icon_win32->biBitCount, 0, 0, 0, 0);
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	if ( icon_256 == NULL ) {
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		SDL_stack_free(icon_win32);
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		return;
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	}
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	pal_256 = icon_256->format->palette;
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	if (icon->format->palette && 
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		(icon->format->BitsPerPixel == icon_256->format->BitsPerPixel)){
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		Uint8 black;
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		SDL_memcpy(pal_256->colors, icon->format->palette->colors,
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					pal_256->ncolors*sizeof(SDL_Color));
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		/* Make sure that 0 is black! */
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		black = SDL_FindColor(pal_256, 0x00, 0x00, 0x00);
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		pal_256->colors[black] = pal_256->colors[0];
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		pal_256->colors[0].r = 0x00;
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		pal_256->colors[0].g = 0x00;
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		pal_256->colors[0].b = 0x00;
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	} else {
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		SDL_DitherColors(pal_256->colors,
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					icon_256->format->BitsPerPixel);
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	}
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	/* Now copy color data to the icon BMP */
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	for ( i=0; i<(1<<icon_win32->biBitCount); ++i ) {
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		icon_win32->biColors[i].rgbRed = pal_256->colors[i].r;
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		icon_win32->biColors[i].rgbGreen = pal_256->colors[i].g;
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		icon_win32->biColors[i].rgbBlue = pal_256->colors[i].b;
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	}
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	/* Convert icon to a standard surface format.  This may not always
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	   be necessary, as Windows supports a variety of BMP formats, but
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	   it greatly simplifies our code.
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	*/ 
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    bounds.x = 0;
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    bounds.y = 0;
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    bounds.w = icon->w;
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    bounds.h = icon->h;
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    if ( SDL_LowerBlit(icon, &bounds, icon_256, &bounds) < 0 ) {
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	    SDL_stack_free(icon_win32);
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		SDL_FreeSurface(icon_256);
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        return;
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	}
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	/* Copy pixels upside-down to icon BMP, masked with the icon mask */
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	if ( SDL_MUSTLOCK(icon_256) || (icon_256->pitch != icon_pitch) ) {
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		SDL_stack_free(icon_win32);
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		SDL_FreeSurface(icon_256);
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		SDL_SetError("Warning: Unexpected icon_256 characteristics");
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		return;
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	}
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	pdata = (Uint8 *)icon_256->pixels;
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	mdata = mask;
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	pwin32 = (Uint8 *)icon_win32+sizeof(*icon_win32)+icon_plen-icon_pitch;
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	skip = icon_pitch - icon->w;
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	for ( row=0; row<icon->h; ++row ) {
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		for ( col=0; col<icon->w; ++col ) {
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			if ( (col%8) == 0 ) {
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				m = *mdata++;
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			}
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			if ( (m&0x80) != 0x00 ) {
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				*pwin32 = *pdata;
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			}
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			m <<= 1;
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			++pdata;
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			++pwin32;
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		}
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		pdata  += skip;
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		pwin32 += skip;
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		pwin32 -= 2*icon_pitch;
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	}
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	SDL_FreeSurface(icon_256);
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	/* Copy mask inverted and upside-down to icon BMP */
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	mdata = mask;
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	mwin32 = (Uint8 *)icon_win32
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			+sizeof(*icon_win32)+icon_plen+icon_mlen-mask_pitch;
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	for ( row=0; row<icon->h; ++row ) {
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		for ( col=0; col<mask_pitch; ++col ) {
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			*mwin32++ = ~*mdata++;
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		}
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		mwin32 -= 2*mask_pitch;
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	}
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	/* Finally, create the icon handle and set the window icon */
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	screen_icn = CreateIconFromResourceEx((Uint8 *)icon_win32, icon_len,
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			TRUE, 0x00030000, icon->w, icon->h, LR_DEFAULTCOLOR);
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	if ( screen_icn == NULL ) {
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		SDL_SetError("Couldn't create Win32 icon handle");
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	} else {
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		SetClassLongPtr(SDL_Window, GCLP_HICON, (LONG_PTR)screen_icn);
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	}
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	SDL_stack_free(icon_win32);
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#endif /* DISABLE_ICON_SUPPORT */
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}
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typedef BOOL (WINAPI *PtrSetWindowTextW)(HWND hWnd, LPCWSTR lpString);
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0
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void WIN_SetWMCaption(_THIS, const char *title, const char *icon)
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{
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#ifdef _WIN32_WCE
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	/* WinCE uses the UNICODE version */
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	LPWSTR lpszW = SDL_iconv_utf8_ucs2((char *)title);
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	SetWindowText(SDL_Window, lpszW);
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	SDL_free(lpszW);
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#else
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	/*
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	 * Try loading SetWindowTextW from kernel32.dll first, and if it exists,
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	 *  pass the UCS-2 string to it. If it doesn't, use
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	 *  WideCharToMultiByte(CP_ACP) and hope that the codepage can support the
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	 *  string data in question. This lets us keep binary compatibility with
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	 *  Win95/98/ME but still use saner Unicode on NT-based Windows.
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	 */
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	static int tried_loading = 0;
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	static PtrSetWindowTextW swtw = NULL;
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	Uint16 *lpsz = SDL_iconv_utf8_ucs2(title);
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	if (!tried_loading) {
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		HMODULE dll = LoadLibrary("user32.dll");
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		if (dll != NULL) {
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			swtw = (PtrSetWindowTextW) GetProcAddress(dll, "SetWindowTextW");
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			if (swtw == NULL) {
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				FreeLibrary(dll);
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			}
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		}
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		tried_loading = 1;
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	}
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	if (swtw != NULL) {
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		swtw(SDL_Window, lpsz);
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	} else {
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		size_t len = WideCharToMultiByte(CP_ACP, 0, lpsz, -1, NULL, 0, NULL, NULL);
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		char *cvt = SDL_malloc(len + 1);
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		WideCharToMultiByte(CP_ACP, 0, lpsz, -1, cvt, len, NULL, NULL);
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		SetWindowText(SDL_Window, cvt);
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		SDL_free(cvt);
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	}
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	SDL_free(lpsz);
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#endif
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}
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int WIN_IconifyWindow(_THIS)
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{
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	ShowWindow(SDL_Window, SW_MINIMIZE);
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	return(1);
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}
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SDL_GrabMode WIN_GrabInput(_THIS, SDL_GrabMode mode)
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{
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	if ( mode == SDL_GRAB_OFF ) {
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		ClipCursor(NULL);
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		if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
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		/*	RJR: March 28, 2000
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			must be leaving relative mode, move mouse from
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			center of window to where it belongs ... */
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			POINT pt;
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			int x, y;
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			SDL_GetMouseState(&x,&y);
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			pt.x = x;
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			pt.y = y;
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			ClientToScreen(SDL_Window, &pt);
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			SetCursorPos(pt.x,pt.y);
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		}
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#ifdef _WIN32_WCE
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		AllKeys(0);
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#endif
0
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	} else {
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		ClipCursor(&SDL_bounds);
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		if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
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		/*	RJR: March 28, 2000
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			must be entering relative mode, get ready by
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			moving mouse to	center of window ... */
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			POINT pt;
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			pt.x = (SDL_VideoSurface->w/2);
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			pt.y = (SDL_VideoSurface->h/2);
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			ClientToScreen(SDL_Window, &pt);
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			SetCursorPos(pt.x, pt.y);
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		}
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#ifdef _WIN32_WCE
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		AllKeys(1);
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#endif
0
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	}
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	return(mode);
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}
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/* If 'info' is the right version, this function fills it and returns 1.
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   Otherwise, in case of a version mismatch, it returns -1.
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*/
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int WIN_GetWMInfo(_THIS, SDL_SysWMinfo *info)
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{
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	if ( info->version.major <= SDL_MAJOR_VERSION ) {
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		info->window = SDL_Window;
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		if ( SDL_VERSIONNUM(info->version.major,
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		                    info->version.minor,
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		                    info->version.patch) >=
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3ac8344e3872 *** empty log message ***
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		     SDL_VERSIONNUM(1, 2, 5) ) {
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#if SDL_VIDEO_OPENGL
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			info->hglrc = GL_hrc;
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#else
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			info->hglrc = NULL;
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#endif
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		}
0
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		return(1);
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	} else {
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		SDL_SetError("Application not compiled with SDL %d.%d\n",
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					SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
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		return(-1);
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	}
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}