src/video/x11/SDL_x11messagebox.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 23 Oct 2012 17:11:22 -0700
changeset 6602 533131e24aeb
child 6603 fc815cb0a2de
permissions -rw-r--r--
Added API for simple messagebox, courtesy of Mike Sartain
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_config.h"
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#if SDL_VIDEO_DRIVER_X11
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#include "SDL.h"
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#include "SDL_x11video.h"
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#include "SDL_x11dyn.h"
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#define MAX_BUTTONS             8       /* Maximum number of buttons supported */
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#define MAX_TEXT_LINES          32      /* Maximum number of text lines supported */
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#define MIN_BUTTON_WIDTH        64      /* Minimum button width */
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#define MIN_DIALOG_WIDTH        200     /* Minimum dialog width */
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#define MIN_DIALOG_HEIGHT       100     /* Minimum dialog height */
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static const char g_MessageBoxFont[] = "-*-*-medium-r-normal--0-120-*-*-p-0-iso8859-1";
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static const SDL_MessageBoxColor g_default_colors[ SDL_MESSAGEBOX_COLOR_MAX ] =
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{
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	{ 56,  54,  53  }, // SDL_MESSAGEBOX_COLOR_BACKGROUND,       
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	{ 209, 207, 205 }, // SDL_MESSAGEBOX_COLOR_TEXT,             
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	{ 140, 135, 129 }, // SDL_MESSAGEBOX_COLOR_BUTTON_BORDER,    
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	{ 105, 102, 99  }, // SDL_MESSAGEBOX_COLOR_BUTTON_BACKGROUND,
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	{ 205, 202, 53  }, // SDL_MESSAGEBOX_COLOR_BUTTON_SELECTED,  
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};
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#define SDL_MAKE_RGB( _r, _g, _b )  ( ( ( Uint32 )( _r ) << 16 ) | \
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                                      ( ( Uint32 )( _g ) << 8 ) |  \
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                                      ( ( Uint32 )( _b ) ) )
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typedef struct SDL_MessageBoxButtonDataX11
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{
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    int x, y;                           /* Text position */
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    int length;                         /* Text length */
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    int text_width;                     /* Text width */
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    SDL_Rect rect;                      /* Rectangle for entire button */
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    const SDL_MessageBoxButtonData *buttondata;   /* Button data from caller */
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} SDL_MessageBoxButtonDataX11;
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typedef struct TextLineData
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{
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    int width;                          /* Width of this text line */
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    int length;                         /* String length of this text line */
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    const char *text;                   /* Text for this line */
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} TextLineData;
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typedef struct SDL_MessageBoxDataX11
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{
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    Font hfont;
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    Window window;
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    Display *display;
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	long event_mask;
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    Atom wm_protocols;
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    Atom wm_delete_message;
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    int dialog_width;                   /* Dialog box width. */
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    int dialog_height;                  /* Dialog box height. */
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    int xtext, ytext;                   /* Text position to start drawing at. */
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    int numlines;                       /* Count of Text lines. */
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    int text_height;                    /* Height for text lines. */
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    TextLineData linedata[ MAX_TEXT_LINES ];
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    int *pbuttonid;                     /* Pointer to user return buttonid value. */
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    int button_press_index;             /* Index into buttondata/buttonpos for button which is pressed (or -1). */
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    int mouse_over_index;               /* Index into buttondata/buttonpos for button mouse is over (or -1). */
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    int numbuttons;                     /* Count of buttons. */
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    const SDL_MessageBoxButtonData *buttondata;
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    SDL_MessageBoxButtonDataX11 buttonpos[ MAX_BUTTONS ];
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	Uint32 color[ SDL_MESSAGEBOX_COLOR_MAX ];
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    const SDL_MessageBoxData *messageboxdata;
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} SDL_MessageBoxDataX11;
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/* Maximum helper for ints. */
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static __inline__ int
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IntMax( int a, int b )
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{
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    return ( a > b  ) ? a : b;
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}
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/* Return width and height for a string. */
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static void
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GetTextWidthHeight( XFontStruct *font_struct, const char *str, int nchars, int *pwidth, int *pheight )
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{
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    XCharStruct text_structure;
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    int font_direction, font_ascent, font_descent;
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    XTextExtents( font_struct, str, nchars,
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                     &font_direction, &font_ascent, &font_descent,
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                     &text_structure );
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    *pwidth = text_structure.width;
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    *pheight = text_structure.ascent + text_structure.descent;
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}
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/* Return index of button if position x,y is contained therein. */
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static int
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GetHitButtonIndex( SDL_MessageBoxDataX11 *data, int x, int y )
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{
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    int i;
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    int numbuttons = data->numbuttons;
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    SDL_MessageBoxButtonDataX11 *buttonpos = data->buttonpos;
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    for ( i = 0; i < numbuttons; i++ )
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    {
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        SDL_Rect *rect = &buttonpos[ i ].rect;
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        if ( ( x >= rect->x ) &&
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            ( x <= ( rect->x + rect->w ) ) &&
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            ( y >= rect->y ) &&
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            ( y <= ( rect->y + rect->h ) ) )
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        {
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            return i;
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        }
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    }
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    return -1;
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}
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/* Initialize SDL_MessageBoxData structure and Display, etc. */
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static int
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X11_MessageBoxInit( SDL_MessageBoxDataX11 *data, const SDL_MessageBoxData * messageboxdata, int * pbuttonid )
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{
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	int i;
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    int numbuttons = messageboxdata->numbuttons;
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    const SDL_MessageBoxButtonData *buttondata = messageboxdata->buttons;
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	const SDL_MessageBoxColor *colorhints;
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    if ( numbuttons > MAX_BUTTONS ) {
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        SDL_SetError("Too many buttons (%d max allowed)", MAX_BUTTONS);
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        return -1;
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    }
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    data->dialog_width = MIN_DIALOG_WIDTH;
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    data->dialog_height = MIN_DIALOG_HEIGHT;
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    data->messageboxdata = messageboxdata;
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    data->buttondata = buttondata;
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    data->numbuttons = numbuttons;
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    data->pbuttonid = pbuttonid;
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    data->display = XOpenDisplay( NULL );
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    if ( !data->display ) {
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        SDL_SetError("Couldn't open X11 display");
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        return -1;
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    }
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    data->hfont = XLoadFont( data->display, g_MessageBoxFont );
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    if ( data->hfont == None ) {
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        SDL_SetError("Couldn't load font %s", g_MessageBoxFont);
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        return -1;
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    }
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	if ( messageboxdata->colorScheme ) {
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		colorhints = messageboxdata->colorScheme->colors;
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	} else {
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		colorhints = g_default_colors;
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	}
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	/* Convert our SDL_MessageBoxColor r,g,b values to packed RGB format. */
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	for ( i = 0; i < SDL_MESSAGEBOX_COLOR_MAX; i++ ) {
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		data->color[ i ] = SDL_MAKE_RGB( colorhints[ i ].r, colorhints[ i ].g, colorhints[ i ].b );
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	}
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    return 0;
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}
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/* Calculate and initialize text and button locations. */
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static int
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X11_MessageBoxInitPositions( SDL_MessageBoxDataX11 *data )
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{
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    int i;
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    int ybuttons;
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    int text_width_max = 0;
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    int button_text_height = 0;
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    int button_width = MIN_BUTTON_WIDTH;
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    const SDL_MessageBoxData *messageboxdata = data->messageboxdata;
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    XFontStruct *fontinfo = XQueryFont( data->display, data->hfont );
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    if ( !fontinfo ) {
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        SDL_SetError("Couldn't get font info");
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        return -1;
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    }
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    /* Go over text and break linefeeds into separate lines. */
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    if ( messageboxdata->message && messageboxdata->message[ 0 ] )
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    {
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        const char *text = messageboxdata->message;
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        TextLineData *plinedata = data->linedata;
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        for ( i = 0; i < MAX_TEXT_LINES; i++, plinedata++ )
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        {
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            int height;
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            char *lf = SDL_strchr( ( char * )text, '\n' );
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            data->numlines++;
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            /* Only grab length up to lf if it exists and isn't the last line. */
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            plinedata->length = ( lf && ( i < MAX_TEXT_LINES - 1 ) ) ? ( lf - text ) : SDL_strlen( text );
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            plinedata->text = text;
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            GetTextWidthHeight( fontinfo, text, plinedata->length, &plinedata->width, &height );
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            /* Text and widths are the largest we've ever seen. */
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            data->text_height = IntMax( data->text_height, height );
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            text_width_max = IntMax( text_width_max, plinedata->width );
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            text += plinedata->length + 1;
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            /* Break if there are no more linefeeds. */
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            if ( !lf )
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                break;
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        }
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        /* Bump up the text height slightly. */
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        data->text_height += 2;
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    }
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    /* Loop through all buttons and calculate the button widths and height. */
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    for ( i = 0; i < data->numbuttons; i++ )
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    {
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        int height;
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        data->buttonpos[ i ].buttondata = &data->buttondata[ i ];
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        data->buttonpos[ i ].length = SDL_strlen( data->buttondata[ i ].text );
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        GetTextWidthHeight( fontinfo, data->buttondata[ i ].text, SDL_strlen( data->buttondata[ i ].text ),
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                            &data->buttonpos[ i ].text_width, &height );
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        button_width = IntMax( button_width, data->buttonpos[ i ].text_width );
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        button_text_height = IntMax( button_text_height, height );
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    }
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    if ( data->numlines )
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    {
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        /* x,y for this line of text. */
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        data->xtext = data->text_height;
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        data->ytext = data->text_height + data->text_height;
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        /* Bump button y down to bottom of text. */
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        ybuttons = 3 * data->ytext / 2 + ( data->numlines - 1 ) * data->text_height;
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        /* Bump the dialog box width and height up if needed. */
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        data->dialog_width = IntMax( data->dialog_width, 2 * data->xtext + text_width_max );
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        data->dialog_height = IntMax( data->dialog_height, ybuttons );
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    }
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    else
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    {
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        /* Button y starts at height of button text. */
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        ybuttons = button_text_height;
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    }
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    if ( data->numbuttons )
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    {
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        int x, y;
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        int width_of_buttons;
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        int button_spacing = button_text_height;
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        int button_height = 2 * button_text_height;
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        /* Bump button width up a bit. */
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        button_width += button_text_height;
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        /* Get width of all buttons lined up. */
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        width_of_buttons = data->numbuttons * button_width + ( data->numbuttons - 1 ) * button_spacing;
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        /* Bump up dialog width and height if buttons are wider than text. */
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        data->dialog_width = IntMax( data->dialog_width, width_of_buttons + 2 * button_spacing );
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        data->dialog_height = IntMax( data->dialog_height, ybuttons + 2 * button_height );
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        /* Location for first button. */
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        x = ( data->dialog_width - width_of_buttons ) / 2;
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        y = ybuttons + ( data->dialog_height - ybuttons - button_height ) / 2;
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        for ( i = 0; i < data->numbuttons; i++ )
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        {
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            /* Button coordinates. */
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            data->buttonpos[ i ].rect.x = x;
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            data->buttonpos[ i ].rect.y = y;
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            data->buttonpos[ i ].rect.w = button_width;
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            data->buttonpos[ i ].rect.h = button_height;
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            /* Button text coordinates. */
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            data->buttonpos[ i ].x = x + ( button_width - data->buttonpos[ i ].text_width ) / 2;
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            data->buttonpos[ i ].y = y + ( button_height - button_text_height - 1 ) / 2 + button_text_height;
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            /* Scoot over for next button. */
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            x += button_width + button_text_height;
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        }
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    }
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    XFreeFontInfo( NULL, fontinfo, 1 );
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    return 0;
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}
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/* Free SDL_MessageBoxData data. */
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static void
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X11_MessageBoxShutdown( SDL_MessageBoxDataX11 *data )
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{
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    if ( data->hfont != None )
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    {
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        XUnloadFont( data->display, data->hfont );
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        data->hfont = None;
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    }
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    if ( data->display )
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    {
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        if ( data->window != None )
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        {
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            XUnmapWindow( data->display, data->window );
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            XDestroyWindow( data->display, data->window );
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            data->window = None;
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        }
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        XCloseDisplay( data->display );
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        data->display = NULL;
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    }
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}
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/* Create and set up our X11 dialog box indow. */
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static int
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X11_MessageBoxCreateWindow( SDL_MessageBoxDataX11 *data )
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{
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    int x, y;
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    XSizeHints *sizehints;
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    XSetWindowAttributes wnd_attr;
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    Display *display = data->display;
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    SDL_WindowData *windowdata = NULL;
slouken@6602
   352
    const SDL_MessageBoxData *messageboxdata = data->messageboxdata;
slouken@6602
   353
slouken@6602
   354
    if ( messageboxdata->window ) {
slouken@6602
   355
        windowdata = (SDL_WindowData *)messageboxdata->window->driverdata;
slouken@6602
   356
    }
slouken@6602
   357
slouken@6602
   358
    data->event_mask = ExposureMask |
slouken@6602
   359
        ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyReleaseMask |
slouken@6602
   360
        StructureNotifyMask | FocusChangeMask | PointerMotionMask;
slouken@6602
   361
	wnd_attr.event_mask = data->event_mask;
slouken@6602
   362
slouken@6602
   363
    data->window = XCreateWindow(
slouken@6602
   364
                            display, DefaultRootWindow( display ),
slouken@6602
   365
                            0, 0,
slouken@6602
   366
                            data->dialog_width, data->dialog_height,
slouken@6602
   367
                            0, CopyFromParent, InputOutput, CopyFromParent,
slouken@6602
   368
                            CWEventMask, &wnd_attr );
slouken@6602
   369
    if ( data->window == None ) {
slouken@6602
   370
        SDL_SetError("Couldn't create X window");
slouken@6602
   371
        return -1;
slouken@6602
   372
    }
slouken@6602
   373
slouken@6602
   374
    if ( windowdata ) {
slouken@6602
   375
        /* http://tronche.com/gui/x/icccm/sec-4.html#WM_TRANSIENT_FOR */
slouken@6602
   376
        XSetTransientForHint( display, data->window, windowdata->xwindow );
slouken@6602
   377
    }
slouken@6602
   378
slouken@6602
   379
    XStoreName( display, data->window, messageboxdata->title );
slouken@6602
   380
slouken@6602
   381
    /* Allow the window to be deleted by the window manager */
slouken@6602
   382
    data->wm_protocols = XInternAtom( display, "WM_PROTOCOLS", False );
slouken@6602
   383
    data->wm_delete_message = XInternAtom( display, "WM_DELETE_WINDOW", False );
slouken@6602
   384
    XSetWMProtocols( display, data->window, &data->wm_delete_message, 1 );
slouken@6602
   385
slouken@6602
   386
    if ( windowdata ) {
slouken@6602
   387
        XWindowAttributes attrib;
slouken@6602
   388
        Window dummy;
slouken@6602
   389
slouken@6602
   390
        XGetWindowAttributes(display, windowdata->xwindow, &attrib);
slouken@6602
   391
        x = attrib.x + ( attrib.width - data->dialog_width ) / 2;
slouken@6602
   392
        y = attrib.y + ( attrib.height - data->dialog_height ) / 3 ;
slouken@6602
   393
        XTranslateCoordinates(display, windowdata->xwindow, DefaultRootWindow( display ), x, y, &x, &y, &dummy);
slouken@6602
   394
    } else {
slouken@6602
   395
        int screen = DefaultScreen( display );
slouken@6602
   396
        x = ( DisplayWidth( display, screen ) - data->dialog_width ) / 2;
slouken@6602
   397
        y = ( DisplayHeight( display, screen ) - data->dialog_height ) / 3 ;
slouken@6602
   398
    }
slouken@6602
   399
    XMoveWindow( display, data->window, x, y );
slouken@6602
   400
slouken@6602
   401
    sizehints = XAllocSizeHints();
slouken@6602
   402
    if ( sizehints ) {
slouken@6602
   403
        sizehints->flags = USPosition | USSize | PMaxSize | PMinSize;
slouken@6602
   404
        sizehints->x = x;
slouken@6602
   405
        sizehints->y = y;
slouken@6602
   406
        sizehints->width = data->dialog_width;
slouken@6602
   407
        sizehints->height = data->dialog_height;
slouken@6602
   408
slouken@6602
   409
        sizehints->min_width = sizehints->max_width = data->dialog_width;
slouken@6602
   410
        sizehints->min_height = sizehints->max_height = data->dialog_height;
slouken@6602
   411
slouken@6602
   412
        XSetWMNormalHints( display, data->window, sizehints );
slouken@6602
   413
slouken@6602
   414
        XFree( sizehints );
slouken@6602
   415
    }
slouken@6602
   416
slouken@6602
   417
    XMapRaised( display, data->window );
slouken@6602
   418
    return 0;
slouken@6602
   419
}
slouken@6602
   420
slouken@6602
   421
/* Draw our message box. */
slouken@6602
   422
static void
slouken@6602
   423
X11_MessageBoxDraw( SDL_MessageBoxDataX11 *data, GC ctx )
slouken@6602
   424
{
slouken@6602
   425
    int i;
slouken@6602
   426
    Window window = data->window;
slouken@6602
   427
    Display *display = data->display;
slouken@6602
   428
slouken@6602
   429
    XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_BACKGROUND ] );
slouken@6602
   430
    XFillRectangle( display, window, ctx, 0, 0, data->dialog_width, data->dialog_height );
slouken@6602
   431
slouken@6602
   432
    XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_TEXT ] );
slouken@6602
   433
    for ( i = 0; i < data->numlines; i++ )
slouken@6602
   434
    {
slouken@6602
   435
        TextLineData *plinedata = &data->linedata[ i ];
slouken@6602
   436
slouken@6602
   437
        XDrawString( display, window, ctx,
slouken@6602
   438
                     data->xtext, data->ytext + i * data->text_height,
slouken@6602
   439
                     plinedata->text, plinedata->length );
slouken@6602
   440
    }
slouken@6602
   441
slouken@6602
   442
    for ( i = 0; i < data->numbuttons; i++ )
slouken@6602
   443
    {
slouken@6602
   444
        SDL_MessageBoxButtonDataX11 *buttondatax11 = &data->buttonpos[ i ];
slouken@6602
   445
        const SDL_MessageBoxButtonData *buttondata = buttondatax11->buttondata;
slouken@6602
   446
        int border = ( buttondata->flags & SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT ) ? 2 : 0;
slouken@6602
   447
        int offset = ( ( data->mouse_over_index == i ) && ( data->button_press_index == data->mouse_over_index ) ) ? 1 : 0;
slouken@6602
   448
slouken@6602
   449
        XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_BUTTON_BACKGROUND ] );
slouken@6602
   450
        XFillRectangle( display, window, ctx,
slouken@6602
   451
                        buttondatax11->rect.x - border, buttondatax11->rect.y - border,
slouken@6602
   452
                        buttondatax11->rect.w + 2 * border, buttondatax11->rect.h + 2 * border );
slouken@6602
   453
slouken@6602
   454
        XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_BUTTON_BORDER ] );
slouken@6602
   455
        XDrawRectangle( display, window, ctx,
slouken@6602
   456
                        buttondatax11->rect.x, buttondatax11->rect.y,
slouken@6602
   457
                        buttondatax11->rect.w, buttondatax11->rect.h );
slouken@6602
   458
slouken@6602
   459
        XSetForeground( display, ctx, ( data->mouse_over_index == i ) ?
slouken@6602
   460
                        data->color[ SDL_MESSAGEBOX_COLOR_BUTTON_SELECTED ] :
slouken@6602
   461
						data->color[ SDL_MESSAGEBOX_COLOR_TEXT ] );
slouken@6602
   462
        XDrawString( display, window, ctx,
slouken@6602
   463
            buttondatax11->x + offset, buttondatax11->y + offset,
slouken@6602
   464
            buttondata->text, buttondatax11->length );
slouken@6602
   465
    }
slouken@6602
   466
}
slouken@6602
   467
slouken@6602
   468
/* Loop and handle message box event messages until something kills it. */
slouken@6602
   469
static int
slouken@6602
   470
X11_MessageBoxLoop( SDL_MessageBoxDataX11 *data )
slouken@6602
   471
{
slouken@6602
   472
    GC ctx;
slouken@6602
   473
    XGCValues ctx_vals;
slouken@6602
   474
    SDL_bool close_dialog = SDL_FALSE;
slouken@6602
   475
    SDL_bool has_focus = SDL_TRUE;
slouken@6602
   476
    KeySym last_key_pressed = XK_VoidSymbol;
slouken@6602
   477
slouken@6602
   478
    ctx_vals.font = data->hfont;
slouken@6602
   479
    ctx_vals.foreground = data->color[ SDL_MESSAGEBOX_COLOR_BACKGROUND ];
slouken@6602
   480
    ctx_vals.background = data->color[ SDL_MESSAGEBOX_COLOR_BACKGROUND ];
slouken@6602
   481
slouken@6602
   482
    ctx = XCreateGC( data->display, data->window, GCForeground | GCBackground | GCFont, &ctx_vals );
slouken@6602
   483
    if ( ctx == None ) {
slouken@6602
   484
        SDL_SetError("Couldn't create graphics context");
slouken@6602
   485
        return -1;
slouken@6602
   486
    }
slouken@6602
   487
slouken@6602
   488
    data->button_press_index = -1;  /* Reset what button is currently depressed. */
slouken@6602
   489
    data->mouse_over_index = -1;    /* Reset what button the mouse is over. */
slouken@6602
   490
slouken@6602
   491
    while( !close_dialog ) {
slouken@6602
   492
        XEvent e;
slouken@6602
   493
        SDL_bool draw = SDL_TRUE;
slouken@6602
   494
slouken@6602
   495
		XWindowEvent( data->display, data->window, data->event_mask, &e );
slouken@6602
   496
slouken@6602
   497
        /* If XFilterEvent returns True, then some input method has filtered the
slouken@6602
   498
           event, and the client should discard the event. */
slouken@6602
   499
        if ( ( e.type != Expose ) && XFilterEvent( &e, None ) )
slouken@6602
   500
            continue;
slouken@6602
   501
slouken@6602
   502
        switch( e.type ) {
slouken@6602
   503
        case Expose:
slouken@6602
   504
            if ( e.xexpose.count > 0 ) {
slouken@6602
   505
                draw = SDL_FALSE;
slouken@6602
   506
            }
slouken@6602
   507
            break;
slouken@6602
   508
slouken@6602
   509
        case FocusIn:
slouken@6602
   510
            /* Got focus. */
slouken@6602
   511
            has_focus = SDL_TRUE;
slouken@6602
   512
            break;
slouken@6602
   513
slouken@6602
   514
        case FocusOut:
slouken@6602
   515
            /* lost focus. Reset button and mouse info. */
slouken@6602
   516
            has_focus = SDL_FALSE;
slouken@6602
   517
            data->button_press_index = -1;
slouken@6602
   518
            data->mouse_over_index = -1;
slouken@6602
   519
            break;
slouken@6602
   520
slouken@6602
   521
        case MotionNotify:
slouken@6602
   522
            if ( has_focus ) {
slouken@6602
   523
                /* Mouse moved... */
slouken@6602
   524
                data->mouse_over_index = GetHitButtonIndex( data, e.xbutton.x, e.xbutton.y );
slouken@6602
   525
            }
slouken@6602
   526
            break;
slouken@6602
   527
slouken@6602
   528
        case ClientMessage:
slouken@6602
   529
            if ( e.xclient.message_type == data->wm_protocols &&
slouken@6602
   530
                 e.xclient.format == 32 &&
slouken@6602
   531
                 e.xclient.data.l[ 0 ] == data->wm_delete_message ) {
slouken@6602
   532
                close_dialog = SDL_TRUE;
slouken@6602
   533
            }
slouken@6602
   534
            break;
slouken@6602
   535
slouken@6602
   536
        case KeyPress:
slouken@6602
   537
            /* Store key press - we make sure in key release that we got both. */
slouken@6602
   538
            last_key_pressed = XLookupKeysym( &e.xkey, 0 );
slouken@6602
   539
            break;
slouken@6602
   540
slouken@6602
   541
        case KeyRelease:
slouken@6602
   542
        {
slouken@6602
   543
            Uint32 mask = 0;
slouken@6602
   544
            KeySym key = XLookupKeysym( &e.xkey, 0 );
slouken@6602
   545
slouken@6602
   546
            /* If this is a key release for something we didn't get the key down for, then bail. */
slouken@6602
   547
            if ( key != last_key_pressed )
slouken@6602
   548
                break;
slouken@6602
   549
slouken@6602
   550
            if ( key == XK_Escape )
slouken@6602
   551
                mask = SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT;
slouken@6602
   552
            else if ( ( key == XK_Return ) || ( key == XK_KP_Enter ) )
slouken@6602
   553
                mask = SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT;
slouken@6602
   554
slouken@6602
   555
            if ( mask ) {
slouken@6602
   556
                int i;
slouken@6602
   557
slouken@6602
   558
                /* Look for first button with this mask set, and return it if found. */
slouken@6602
   559
                for ( i = 0; i < data->numbuttons; i++ ) {
slouken@6602
   560
                    SDL_MessageBoxButtonDataX11 *buttondatax11 = &data->buttonpos[ i ];
slouken@6602
   561
slouken@6602
   562
                    if ( buttondatax11->buttondata->flags & mask ) {
slouken@6602
   563
                        *data->pbuttonid = buttondatax11->buttondata->buttonid;
slouken@6602
   564
                        close_dialog = SDL_TRUE;
slouken@6602
   565
                        break;
slouken@6602
   566
                    }
slouken@6602
   567
                }
slouken@6602
   568
            }
slouken@6602
   569
            break;
slouken@6602
   570
        }
slouken@6602
   571
slouken@6602
   572
        case ButtonPress:
slouken@6602
   573
            data->button_press_index = -1;
slouken@6602
   574
            if ( e.xbutton.button == Button1 ) {
slouken@6602
   575
                /* Find index of button they clicked on. */
slouken@6602
   576
                data->button_press_index = GetHitButtonIndex( data, e.xbutton.x, e.xbutton.y );
slouken@6602
   577
            }
slouken@6602
   578
            break;
slouken@6602
   579
slouken@6602
   580
        case ButtonRelease:
slouken@6602
   581
            /* If button is released over the same button that was clicked down on, then return it. */
slouken@6602
   582
            if ( ( e.xbutton.button == Button1 ) && ( data->button_press_index >= 0 ) ) {
slouken@6602
   583
                int button = GetHitButtonIndex( data, e.xbutton.x, e.xbutton.y );
slouken@6602
   584
slouken@6602
   585
                if ( data->button_press_index == button ) {
slouken@6602
   586
                    SDL_MessageBoxButtonDataX11 *buttondatax11 = &data->buttonpos[ button ];
slouken@6602
   587
slouken@6602
   588
                    *data->pbuttonid = buttondatax11->buttondata->buttonid;
slouken@6602
   589
                    close_dialog = SDL_TRUE;
slouken@6602
   590
                }
slouken@6602
   591
            }
slouken@6602
   592
            data->button_press_index = -1;
slouken@6602
   593
            break;
slouken@6602
   594
        }
slouken@6602
   595
slouken@6602
   596
        if ( draw ) {
slouken@6602
   597
            /* Draw our dialog box. */
slouken@6602
   598
            X11_MessageBoxDraw( data, ctx );
slouken@6602
   599
        }
slouken@6602
   600
    }
slouken@6602
   601
slouken@6602
   602
    XFreeGC( data->display, ctx );
slouken@6602
   603
    return 0;
slouken@6602
   604
}
slouken@6602
   605
slouken@6602
   606
/* Display an x11 message box. */
slouken@6602
   607
int
slouken@6602
   608
X11_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
slouken@6602
   609
{
slouken@6602
   610
    int ret;
slouken@6602
   611
    SDL_MessageBoxDataX11 data;
slouken@6602
   612
slouken@6602
   613
    SDL_memset( &data, 0, sizeof( data ) );
slouken@6602
   614
slouken@6602
   615
    if ( !SDL_X11_LoadSymbols() )
slouken@6602
   616
        return -1;
slouken@6602
   617
slouken@6602
   618
    /* This code could get called from multiple threads maybe? */
slouken@6602
   619
    XInitThreads();
slouken@6602
   620
slouken@6602
   621
    /* Initialize the return buttonid value to -1 (for error or dialogbox closed). */
slouken@6602
   622
    *buttonid = -1;
slouken@6602
   623
slouken@6602
   624
    /* Init and display the message box. */
slouken@6602
   625
    ret = X11_MessageBoxInit( &data, messageboxdata, buttonid );
slouken@6602
   626
    if ( ret != -1 ) {
slouken@6602
   627
        ret = X11_MessageBoxInitPositions( &data );
slouken@6602
   628
        if ( ret != -1 ) {
slouken@6602
   629
            ret = X11_MessageBoxCreateWindow( &data );
slouken@6602
   630
            if ( ret != -1 ) {
slouken@6602
   631
                ret = X11_MessageBoxLoop( &data );
slouken@6602
   632
            }
slouken@6602
   633
        }
slouken@6602
   634
    }
slouken@6602
   635
slouken@6602
   636
    X11_MessageBoxShutdown( &data );
slouken@6602
   637
    return ret;
slouken@6602
   638
}
slouken@6602
   639
slouken@6602
   640
#endif /* SDL_VIDEO_DRIVER_X11 */
slouken@6602
   641
slouken@6602
   642
/* vi: set ts=4 sw=4 expandtab: */