diff options
Diffstat (limited to 'Source/external/SDL2/src/video/x11/SDL_x11messagebox.c')
| -rw-r--r-- | Source/external/SDL2/src/video/x11/SDL_x11messagebox.c | 872 |
1 files changed, 872 insertions, 0 deletions
diff --git a/Source/external/SDL2/src/video/x11/SDL_x11messagebox.c b/Source/external/SDL2/src/video/x11/SDL_x11messagebox.c new file mode 100644 index 0000000..70a472a --- /dev/null +++ b/Source/external/SDL2/src/video/x11/SDL_x11messagebox.c @@ -0,0 +1,872 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +#include "../../SDL_internal.h" + +#if SDL_VIDEO_DRIVER_X11 + +#include "SDL.h" +#include "SDL_x11video.h" +#include "SDL_x11dyn.h" +#include "SDL_assert.h" +#include "SDL_x11messagebox.h" + +#include <X11/keysym.h> +#include <locale.h> + + +#define SDL_FORK_MESSAGEBOX 1 +#define SDL_SET_LOCALE 1 + +#if SDL_FORK_MESSAGEBOX +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> +#include <errno.h> +#endif + +#define MAX_BUTTONS 8 /* Maximum number of buttons supported */ +#define MIN_BUTTON_WIDTH 64 /* Minimum button width */ +#define MIN_DIALOG_WIDTH 200 /* Minimum dialog width */ +#define MIN_DIALOG_HEIGHT 100 /* Minimum dialog height */ + +static const char g_MessageBoxFontLatin1[] = "-*-*-medium-r-normal--0-120-*-*-p-0-iso8859-1"; +static const char g_MessageBoxFont[] = "-*-*-medium-r-normal--*-120-*-*-*-*-*-*"; + +static const SDL_MessageBoxColor g_default_colors[ SDL_MESSAGEBOX_COLOR_MAX ] = { + { 56, 54, 53 }, /* SDL_MESSAGEBOX_COLOR_BACKGROUND, */ + { 209, 207, 205 }, /* SDL_MESSAGEBOX_COLOR_TEXT, */ + { 140, 135, 129 }, /* SDL_MESSAGEBOX_COLOR_BUTTON_BORDER, */ + { 105, 102, 99 }, /* SDL_MESSAGEBOX_COLOR_BUTTON_BACKGROUND, */ + { 205, 202, 53 }, /* SDL_MESSAGEBOX_COLOR_BUTTON_SELECTED, */ +}; + +#define SDL_MAKE_RGB( _r, _g, _b ) ( ( ( Uint32 )( _r ) << 16 ) | \ + ( ( Uint32 )( _g ) << 8 ) | \ + ( ( Uint32 )( _b ) ) ) + +typedef struct SDL_MessageBoxButtonDataX11 { + int x, y; /* Text position */ + int length; /* Text length */ + int text_width; /* Text width */ + + SDL_Rect rect; /* Rectangle for entire button */ + + const SDL_MessageBoxButtonData *buttondata; /* Button data from caller */ +} SDL_MessageBoxButtonDataX11; + +typedef struct TextLineData { + int width; /* Width of this text line */ + int length; /* String length of this text line */ + const char *text; /* Text for this line */ +} TextLineData; + +typedef struct SDL_MessageBoxDataX11 +{ + Display *display; + int screen; + Window window; +#if SDL_VIDEO_DRIVER_X11_XDBE + XdbeBackBuffer buf; + SDL_bool xdbe; /* Whether Xdbe is present or not */ +#endif + long event_mask; + Atom wm_protocols; + Atom wm_delete_message; + + int dialog_width; /* Dialog box width. */ + int dialog_height; /* Dialog box height. */ + + XFontSet font_set; /* for UTF-8 systems */ + XFontStruct *font_struct; /* Latin1 (ASCII) fallback. */ + int xtext, ytext; /* Text position to start drawing at. */ + int numlines; /* Count of Text lines. */ + int text_height; /* Height for text lines. */ + TextLineData *linedata; + + int *pbuttonid; /* Pointer to user return buttonid value. */ + + int button_press_index; /* Index into buttondata/buttonpos for button which is pressed (or -1). */ + int mouse_over_index; /* Index into buttondata/buttonpos for button mouse is over (or -1). */ + + int numbuttons; /* Count of buttons. */ + const SDL_MessageBoxButtonData *buttondata; + SDL_MessageBoxButtonDataX11 buttonpos[ MAX_BUTTONS ]; + + Uint32 color[ SDL_MESSAGEBOX_COLOR_MAX ]; + + const SDL_MessageBoxData *messageboxdata; +} SDL_MessageBoxDataX11; + +/* Maximum helper for ints. */ +static SDL_INLINE int +IntMax( int a, int b ) +{ + return ( a > b ) ? a : b; +} + +/* Return width and height for a string. */ +static void +GetTextWidthHeight( SDL_MessageBoxDataX11 *data, const char *str, int nbytes, int *pwidth, int *pheight ) +{ + if (SDL_X11_HAVE_UTF8) { + XRectangle overall_ink, overall_logical; + X11_Xutf8TextExtents(data->font_set, str, nbytes, &overall_ink, &overall_logical); + *pwidth = overall_logical.width; + *pheight = overall_logical.height; + } else { + XCharStruct text_structure; + int font_direction, font_ascent, font_descent; + X11_XTextExtents( data->font_struct, str, nbytes, + &font_direction, &font_ascent, &font_descent, + &text_structure ); + *pwidth = text_structure.width; + *pheight = text_structure.ascent + text_structure.descent; + } +} + +/* Return index of button if position x,y is contained therein. */ +static int +GetHitButtonIndex( SDL_MessageBoxDataX11 *data, int x, int y ) +{ + int i; + int numbuttons = data->numbuttons; + SDL_MessageBoxButtonDataX11 *buttonpos = data->buttonpos; + + for ( i = 0; i < numbuttons; i++ ) { + SDL_Rect *rect = &buttonpos[ i ].rect; + + if ( ( x >= rect->x ) && + ( x <= ( rect->x + rect->w ) ) && + ( y >= rect->y ) && + ( y <= ( rect->y + rect->h ) ) ) { + return i; + } + } + + return -1; +} + +/* Initialize SDL_MessageBoxData structure and Display, etc. */ +static int +X11_MessageBoxInit( SDL_MessageBoxDataX11 *data, const SDL_MessageBoxData * messageboxdata, int * pbuttonid ) +{ + int i; + int numbuttons = messageboxdata->numbuttons; + const SDL_MessageBoxButtonData *buttondata = messageboxdata->buttons; + const SDL_MessageBoxColor *colorhints; + + if ( numbuttons > MAX_BUTTONS ) { + return SDL_SetError("Too many buttons (%d max allowed)", MAX_BUTTONS); + } + + data->dialog_width = MIN_DIALOG_WIDTH; + data->dialog_height = MIN_DIALOG_HEIGHT; + data->messageboxdata = messageboxdata; + data->buttondata = buttondata; + data->numbuttons = numbuttons; + data->pbuttonid = pbuttonid; + + data->display = X11_XOpenDisplay( NULL ); + if ( !data->display ) { + return SDL_SetError("Couldn't open X11 display"); + } + + if (SDL_X11_HAVE_UTF8) { + char **missing = NULL; + int num_missing = 0; + data->font_set = X11_XCreateFontSet(data->display, g_MessageBoxFont, + &missing, &num_missing, NULL); + if ( missing != NULL ) { + X11_XFreeStringList(missing); + } + if ( data->font_set == NULL ) { + return SDL_SetError("Couldn't load font %s", g_MessageBoxFont); + } + } else { + data->font_struct = X11_XLoadQueryFont( data->display, g_MessageBoxFontLatin1 ); + if ( data->font_struct == NULL ) { + return SDL_SetError("Couldn't load font %s", g_MessageBoxFontLatin1); + } + } + + if ( messageboxdata->colorScheme ) { + colorhints = messageboxdata->colorScheme->colors; + } else { + colorhints = g_default_colors; + } + + /* Convert our SDL_MessageBoxColor r,g,b values to packed RGB format. */ + for ( i = 0; i < SDL_MESSAGEBOX_COLOR_MAX; i++ ) { + data->color[ i ] = SDL_MAKE_RGB( colorhints[ i ].r, colorhints[ i ].g, colorhints[ i ].b ); + } + + return 0; +} + +static int +CountLinesOfText(const char *text) +{ + int retval = 0; + while (text && *text) { + const char *lf = SDL_strchr(text, '\n'); + retval++; /* even without an endline, this counts as a line. */ + text = lf ? lf + 1 : NULL; + } + return retval; +} + +/* Calculate and initialize text and button locations. */ +static int +X11_MessageBoxInitPositions( SDL_MessageBoxDataX11 *data ) +{ + int i; + int ybuttons; + int text_width_max = 0; + int button_text_height = 0; + int button_width = MIN_BUTTON_WIDTH; + const SDL_MessageBoxData *messageboxdata = data->messageboxdata; + + /* Go over text and break linefeeds into separate lines. */ + if ( messageboxdata->message && messageboxdata->message[ 0 ] ) { + const char *text = messageboxdata->message; + const int linecount = CountLinesOfText(text); + TextLineData *plinedata = (TextLineData *) SDL_malloc(sizeof (TextLineData) * linecount); + + if (!plinedata) { + return SDL_OutOfMemory(); + } + + data->linedata = plinedata; + data->numlines = linecount; + + for ( i = 0; i < linecount; i++, plinedata++ ) { + const char *lf = SDL_strchr( text, '\n' ); + const int length = lf ? ( lf - text ) : SDL_strlen( text ); + int height; + + plinedata->text = text; + + GetTextWidthHeight( data, text, length, &plinedata->width, &height ); + + /* Text and widths are the largest we've ever seen. */ + data->text_height = IntMax( data->text_height, height ); + text_width_max = IntMax( text_width_max, plinedata->width ); + + plinedata->length = length; + if (lf && (lf > text) && (lf[-1] == '\r')) { + plinedata->length--; + } + + text += length + 1; + + /* Break if there are no more linefeeds. */ + if ( !lf ) + break; + } + + /* Bump up the text height slightly. */ + data->text_height += 2; + } + + /* Loop through all buttons and calculate the button widths and height. */ + for ( i = 0; i < data->numbuttons; i++ ) { + int height; + + data->buttonpos[ i ].buttondata = &data->buttondata[ i ]; + data->buttonpos[ i ].length = SDL_strlen( data->buttondata[ i ].text ); + + GetTextWidthHeight( data, data->buttondata[ i ].text, SDL_strlen( data->buttondata[ i ].text ), + &data->buttonpos[ i ].text_width, &height ); + + button_width = IntMax( button_width, data->buttonpos[ i ].text_width ); + button_text_height = IntMax( button_text_height, height ); + } + + if ( data->numlines ) { + /* x,y for this line of text. */ + data->xtext = data->text_height; + data->ytext = data->text_height + data->text_height; + + /* Bump button y down to bottom of text. */ + ybuttons = 3 * data->ytext / 2 + ( data->numlines - 1 ) * data->text_height; + + /* Bump the dialog box width and height up if needed. */ + data->dialog_width = IntMax( data->dialog_width, 2 * data->xtext + text_width_max ); + data->dialog_height = IntMax( data->dialog_height, ybuttons ); + } else { + /* Button y starts at height of button text. */ + ybuttons = button_text_height; + } + + if ( data->numbuttons ) { + int x, y; + int width_of_buttons; + int button_spacing = button_text_height; + int button_height = 2 * button_text_height; + + /* Bump button width up a bit. */ + button_width += button_text_height; + + /* Get width of all buttons lined up. */ + width_of_buttons = data->numbuttons * button_width + ( data->numbuttons - 1 ) * button_spacing; + + /* Bump up dialog width and height if buttons are wider than text. */ + data->dialog_width = IntMax( data->dialog_width, width_of_buttons + 2 * button_spacing ); + data->dialog_height = IntMax( data->dialog_height, ybuttons + 2 * button_height ); + + /* Location for first button. */ + x = ( data->dialog_width - width_of_buttons ) / 2; + y = ybuttons + ( data->dialog_height - ybuttons - button_height ) / 2; + + for ( i = 0; i < data->numbuttons; i++ ) { + /* Button coordinates. */ + data->buttonpos[ i ].rect.x = x; + data->buttonpos[ i ].rect.y = y; + data->buttonpos[ i ].rect.w = button_width; + data->buttonpos[ i ].rect.h = button_height; + + /* Button text coordinates. */ + data->buttonpos[ i ].x = x + ( button_width - data->buttonpos[ i ].text_width ) / 2; + data->buttonpos[ i ].y = y + ( button_height - button_text_height - 1 ) / 2 + button_text_height; + + /* Scoot over for next button. */ + x += button_width + button_spacing; + } + } + + return 0; +} + +/* Free SDL_MessageBoxData data. */ +static void +X11_MessageBoxShutdown( SDL_MessageBoxDataX11 *data ) +{ + if ( data->font_set != NULL ) { + X11_XFreeFontSet( data->display, data->font_set ); + data->font_set = NULL; + } + + if ( data->font_struct != NULL ) { + X11_XFreeFont( data->display, data->font_struct ); + data->font_struct = NULL; + } + +#if SDL_VIDEO_DRIVER_X11_XDBE + if ( SDL_X11_HAVE_XDBE && data->xdbe ) { + X11_XdbeDeallocateBackBufferName(data->display, data->buf); + } +#endif + + if ( data->display ) { + if ( data->window != None ) { + X11_XWithdrawWindow( data->display, data->window, data->screen ); + X11_XDestroyWindow( data->display, data->window ); + data->window = None; + } + + X11_XCloseDisplay( data->display ); + data->display = NULL; + } + + SDL_free(data->linedata); +} + +/* Create and set up our X11 dialog box indow. */ +static int +X11_MessageBoxCreateWindow( SDL_MessageBoxDataX11 *data ) +{ + int x, y; + XSizeHints *sizehints; + XSetWindowAttributes wnd_attr; + Atom _NET_WM_WINDOW_TYPE, _NET_WM_WINDOW_TYPE_DIALOG, _NET_WM_NAME; + Display *display = data->display; + SDL_WindowData *windowdata = NULL; + const SDL_MessageBoxData *messageboxdata = data->messageboxdata; + char *title_locale = NULL; + + if ( messageboxdata->window ) { + SDL_DisplayData *displaydata = + (SDL_DisplayData *) SDL_GetDisplayForWindow(messageboxdata->window)->driverdata; + windowdata = (SDL_WindowData *)messageboxdata->window->driverdata; + data->screen = displaydata->screen; + } else { + data->screen = DefaultScreen( display ); + } + + data->event_mask = ExposureMask | + ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyReleaseMask | + StructureNotifyMask | FocusChangeMask | PointerMotionMask; + wnd_attr.event_mask = data->event_mask; + + data->window = X11_XCreateWindow( + display, RootWindow(display, data->screen), + 0, 0, + data->dialog_width, data->dialog_height, + 0, CopyFromParent, InputOutput, CopyFromParent, + CWEventMask, &wnd_attr ); + if ( data->window == None ) { + return SDL_SetError("Couldn't create X window"); + } + + if ( windowdata ) { + /* http://tronche.com/gui/x/icccm/sec-4.html#WM_TRANSIENT_FOR */ + X11_XSetTransientForHint( display, data->window, windowdata->xwindow ); + } + + X11_XStoreName( display, data->window, messageboxdata->title ); + _NET_WM_NAME = X11_XInternAtom(display, "_NET_WM_NAME", False); + + title_locale = SDL_iconv_utf8_locale(messageboxdata->title); + if (title_locale) { + XTextProperty titleprop; + Status status = X11_XStringListToTextProperty(&title_locale, 1, &titleprop); + SDL_free(title_locale); + if (status) { + X11_XSetTextProperty(display, data->window, &titleprop, XA_WM_NAME); + X11_XFree(titleprop.value); + } + } + +#ifdef X_HAVE_UTF8_STRING + if (SDL_X11_HAVE_UTF8) { + XTextProperty titleprop; + Status status = X11_Xutf8TextListToTextProperty(display, (char **) &messageboxdata->title, 1, + XUTF8StringStyle, &titleprop); + if (status == Success) { + X11_XSetTextProperty(display, data->window, &titleprop, + _NET_WM_NAME); + X11_XFree(titleprop.value); + } + } +#endif + + /* Let the window manager know this is a dialog box */ + _NET_WM_WINDOW_TYPE = X11_XInternAtom(display, "_NET_WM_WINDOW_TYPE", False); + _NET_WM_WINDOW_TYPE_DIALOG = X11_XInternAtom(display, "_NET_WM_WINDOW_TYPE_DIALOG", False); + X11_XChangeProperty(display, data->window, _NET_WM_WINDOW_TYPE, XA_ATOM, 32, + PropModeReplace, + (unsigned char *)&_NET_WM_WINDOW_TYPE_DIALOG, 1); + + /* Allow the window to be deleted by the window manager */ + data->wm_protocols = X11_XInternAtom( display, "WM_PROTOCOLS", False ); + data->wm_delete_message = X11_XInternAtom( display, "WM_DELETE_WINDOW", False ); + X11_XSetWMProtocols( display, data->window, &data->wm_delete_message, 1 ); + + if ( windowdata ) { + XWindowAttributes attrib; + Window dummy; + + X11_XGetWindowAttributes(display, windowdata->xwindow, &attrib); + x = attrib.x + ( attrib.width - data->dialog_width ) / 2; + y = attrib.y + ( attrib.height - data->dialog_height ) / 3 ; + X11_XTranslateCoordinates(display, windowdata->xwindow, RootWindow(display, data->screen), x, y, &x, &y, &dummy); + } else { + const SDL_VideoDevice *dev = SDL_GetVideoDevice(); + if ((dev) && (dev->displays) && (dev->num_displays > 0)) { + const SDL_VideoDisplay *dpy = &dev->displays[0]; + const SDL_DisplayData *dpydata = (SDL_DisplayData *) dpy->driverdata; + x = dpydata->x + (( dpy->current_mode.w - data->dialog_width ) / 2); + y = dpydata->y + (( dpy->current_mode.h - data->dialog_height ) / 3); + } else { /* oh well. This will misposition on a multi-head setup. Init first next time. */ + x = ( DisplayWidth( display, data->screen ) - data->dialog_width ) / 2; + y = ( DisplayHeight( display, data->screen ) - data->dialog_height ) / 3 ; + } + } + X11_XMoveWindow( display, data->window, x, y ); + + sizehints = X11_XAllocSizeHints(); + if ( sizehints ) { + sizehints->flags = USPosition | USSize | PMaxSize | PMinSize; + sizehints->x = x; + sizehints->y = y; + sizehints->width = data->dialog_width; + sizehints->height = data->dialog_height; + + sizehints->min_width = sizehints->max_width = data->dialog_width; + sizehints->min_height = sizehints->max_height = data->dialog_height; + + X11_XSetWMNormalHints( display, data->window, sizehints ); + + X11_XFree( sizehints ); + } + + X11_XMapRaised( display, data->window ); + +#if SDL_VIDEO_DRIVER_X11_XDBE + /* Initialise a back buffer for double buffering */ + if (SDL_X11_HAVE_XDBE) { + int xdbe_major, xdbe_minor; + if (X11_XdbeQueryExtension(display, &xdbe_major, &xdbe_minor) != 0) { + data->xdbe = SDL_TRUE; + data->buf = X11_XdbeAllocateBackBufferName(display, data->window, XdbeUndefined); + } else { + data->xdbe = SDL_FALSE; + } + } +#endif + + return 0; +} + +/* Draw our message box. */ +static void +X11_MessageBoxDraw( SDL_MessageBoxDataX11 *data, GC ctx ) +{ + int i; + Drawable window = data->window; + Display *display = data->display; + +#if SDL_VIDEO_DRIVER_X11_XDBE + if (SDL_X11_HAVE_XDBE && data->xdbe) { + window = data->buf; + X11_XdbeBeginIdiom(data->display); + } +#endif + + X11_XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_BACKGROUND ] ); + X11_XFillRectangle( display, window, ctx, 0, 0, data->dialog_width, data->dialog_height ); + + X11_XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_TEXT ] ); + for ( i = 0; i < data->numlines; i++ ) { + TextLineData *plinedata = &data->linedata[ i ]; + + if (SDL_X11_HAVE_UTF8) { + X11_Xutf8DrawString( display, window, data->font_set, ctx, + data->xtext, data->ytext + i * data->text_height, + plinedata->text, plinedata->length ); + } else { + X11_XDrawString( display, window, ctx, + data->xtext, data->ytext + i * data->text_height, + plinedata->text, plinedata->length ); + } + } + + for ( i = 0; i < data->numbuttons; i++ ) { + SDL_MessageBoxButtonDataX11 *buttondatax11 = &data->buttonpos[ i ]; + const SDL_MessageBoxButtonData *buttondata = buttondatax11->buttondata; + int border = ( buttondata->flags & SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT ) ? 2 : 0; + int offset = ( ( data->mouse_over_index == i ) && ( data->button_press_index == data->mouse_over_index ) ) ? 1 : 0; + + X11_XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_BUTTON_BACKGROUND ] ); + X11_XFillRectangle( display, window, ctx, + buttondatax11->rect.x - border, buttondatax11->rect.y - border, + buttondatax11->rect.w + 2 * border, buttondatax11->rect.h + 2 * border ); + + X11_XSetForeground( display, ctx, data->color[ SDL_MESSAGEBOX_COLOR_BUTTON_BORDER ] ); + X11_XDrawRectangle( display, window, ctx, + buttondatax11->rect.x, buttondatax11->rect.y, + buttondatax11->rect.w, buttondatax11->rect.h ); + + X11_XSetForeground( display, ctx, ( data->mouse_over_index == i ) ? + data->color[ SDL_MESSAGEBOX_COLOR_BUTTON_SELECTED ] : + data->color[ SDL_MESSAGEBOX_COLOR_TEXT ] ); + + if (SDL_X11_HAVE_UTF8) { + X11_Xutf8DrawString( display, window, data->font_set, ctx, + buttondatax11->x + offset, + buttondatax11->y + offset, + buttondata->text, buttondatax11->length ); + } else { + X11_XDrawString( display, window, ctx, + buttondatax11->x + offset, buttondatax11->y + offset, + buttondata->text, buttondatax11->length ); + } + } + +#if SDL_VIDEO_DRIVER_X11_XDBE + if (SDL_X11_HAVE_XDBE && data->xdbe) { + XdbeSwapInfo swap_info; + swap_info.swap_window = data->window; + swap_info.swap_action = XdbeUndefined; + X11_XdbeSwapBuffers(data->display, &swap_info, 1); + X11_XdbeEndIdiom(data->display); + } +#endif +} + +static Bool +X11_MessageBoxEventTest(Display *display, XEvent *event, XPointer arg) +{ + const SDL_MessageBoxDataX11 *data = (const SDL_MessageBoxDataX11 *) arg; + return ((event->xany.display == data->display) && (event->xany.window == data->window)) ? True : False; +} + +/* Loop and handle message box event messages until something kills it. */ +static int +X11_MessageBoxLoop( SDL_MessageBoxDataX11 *data ) +{ + GC ctx; + XGCValues ctx_vals; + SDL_bool close_dialog = SDL_FALSE; + SDL_bool has_focus = SDL_TRUE; + KeySym last_key_pressed = XK_VoidSymbol; + unsigned long gcflags = GCForeground | GCBackground; + + SDL_zero(ctx_vals); + ctx_vals.foreground = data->color[ SDL_MESSAGEBOX_COLOR_BACKGROUND ]; + ctx_vals.background = data->color[ SDL_MESSAGEBOX_COLOR_BACKGROUND ]; + + if (!SDL_X11_HAVE_UTF8) { + gcflags |= GCFont; + ctx_vals.font = data->font_struct->fid; + } + + ctx = X11_XCreateGC( data->display, data->window, gcflags, &ctx_vals ); + if ( ctx == None ) { + return SDL_SetError("Couldn't create graphics context"); + } + + data->button_press_index = -1; /* Reset what button is currently depressed. */ + data->mouse_over_index = -1; /* Reset what button the mouse is over. */ + + while( !close_dialog ) { + XEvent e; + SDL_bool draw = SDL_TRUE; + + /* can't use XWindowEvent() because it can't handle ClientMessage events. */ + /* can't use XNextEvent() because we only want events for this window. */ + X11_XIfEvent( data->display, &e, X11_MessageBoxEventTest, (XPointer) data ); + + /* If X11_XFilterEvent returns True, then some input method has filtered the + event, and the client should discard the event. */ + if ( ( e.type != Expose ) && X11_XFilterEvent( &e, None ) ) + continue; + + switch( e.type ) { + case Expose: + if ( e.xexpose.count > 0 ) { + draw = SDL_FALSE; + } + break; + + case FocusIn: + /* Got focus. */ + has_focus = SDL_TRUE; + break; + + case FocusOut: + /* lost focus. Reset button and mouse info. */ + has_focus = SDL_FALSE; + data->button_press_index = -1; + data->mouse_over_index = -1; + break; + + case MotionNotify: + if ( has_focus ) { + /* Mouse moved... */ + const int previndex = data->mouse_over_index; + data->mouse_over_index = GetHitButtonIndex( data, e.xbutton.x, e.xbutton.y ); + if (data->mouse_over_index == previndex) { + draw = SDL_FALSE; + } + } + break; + + case ClientMessage: + if ( e.xclient.message_type == data->wm_protocols && + e.xclient.format == 32 && + e.xclient.data.l[ 0 ] == data->wm_delete_message ) { + close_dialog = SDL_TRUE; + } + break; + + case KeyPress: + /* Store key press - we make sure in key release that we got both. */ + last_key_pressed = X11_XLookupKeysym( &e.xkey, 0 ); + break; + + case KeyRelease: { + Uint32 mask = 0; + KeySym key = X11_XLookupKeysym( &e.xkey, 0 ); + + /* If this is a key release for something we didn't get the key down for, then bail. */ + if ( key != last_key_pressed ) + break; + + if ( key == XK_Escape ) + mask = SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT; + else if ( ( key == XK_Return ) || ( key == XK_KP_Enter ) ) + mask = SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT; + + if ( mask ) { + int i; + + /* Look for first button with this mask set, and return it if found. */ + for ( i = 0; i < data->numbuttons; i++ ) { + SDL_MessageBoxButtonDataX11 *buttondatax11 = &data->buttonpos[ i ]; + + if ( buttondatax11->buttondata->flags & mask ) { + *data->pbuttonid = buttondatax11->buttondata->buttonid; + close_dialog = SDL_TRUE; + break; + } + } + } + break; + } + + case ButtonPress: + data->button_press_index = -1; + if ( e.xbutton.button == Button1 ) { + /* Find index of button they clicked on. */ + data->button_press_index = GetHitButtonIndex( data, e.xbutton.x, e.xbutton.y ); + } + break; + + case ButtonRelease: + /* If button is released over the same button that was clicked down on, then return it. */ + if ( ( e.xbutton.button == Button1 ) && ( data->button_press_index >= 0 ) ) { + int button = GetHitButtonIndex( data, e.xbutton.x, e.xbutton.y ); + + if ( data->button_press_index == button ) { + SDL_MessageBoxButtonDataX11 *buttondatax11 = &data->buttonpos[ button ]; + + *data->pbuttonid = buttondatax11->buttondata->buttonid; + close_dialog = SDL_TRUE; + } + } + data->button_press_index = -1; + break; + } + + if ( draw ) { + /* Draw our dialog box. */ + X11_MessageBoxDraw( data, ctx ); + } + } + + X11_XFreeGC( data->display, ctx ); + return 0; +} + +static int +X11_ShowMessageBoxImpl(const SDL_MessageBoxData *messageboxdata, int *buttonid) +{ + int ret; + SDL_MessageBoxDataX11 data; +#if SDL_SET_LOCALE + char *origlocale; +#endif + + SDL_zero(data); + + if ( !SDL_X11_LoadSymbols() ) + return -1; + +#if SDL_SET_LOCALE + origlocale = setlocale(LC_ALL, NULL); + if (origlocale != NULL) { + origlocale = SDL_strdup(origlocale); + if (origlocale == NULL) { + return SDL_OutOfMemory(); + } + setlocale(LC_ALL, ""); + } +#endif + + /* This code could get called from multiple threads maybe? */ + X11_XInitThreads(); + + /* Initialize the return buttonid value to -1 (for error or dialogbox closed). */ + *buttonid = -1; + + /* Init and display the message box. */ + ret = X11_MessageBoxInit( &data, messageboxdata, buttonid ); + if ( ret != -1 ) { + ret = X11_MessageBoxInitPositions( &data ); + if ( ret != -1 ) { + ret = X11_MessageBoxCreateWindow( &data ); + if ( ret != -1 ) { + ret = X11_MessageBoxLoop( &data ); + } + } + } + + X11_MessageBoxShutdown( &data ); + +#if SDL_SET_LOCALE + if (origlocale) { + setlocale(LC_ALL, origlocale); + SDL_free(origlocale); + } +#endif + + return ret; +} + +/* Display an x11 message box. */ +int +X11_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid) +{ +#if SDL_FORK_MESSAGEBOX + /* Use a child process to protect against setlocale(). Annoying. */ + pid_t pid; + int fds[2]; + int status = 0; + + if (pipe(fds) == -1) { + return X11_ShowMessageBoxImpl(messageboxdata, buttonid); /* oh well. */ + } + + pid = fork(); + if (pid == -1) { /* failed */ + close(fds[0]); + close(fds[1]); + return X11_ShowMessageBoxImpl(messageboxdata, buttonid); /* oh well. */ + } else if (pid == 0) { /* we're the child */ + int exitcode = 0; + close(fds[0]); + status = X11_ShowMessageBoxImpl(messageboxdata, buttonid); + if (write(fds[1], &status, sizeof (int)) != sizeof (int)) + exitcode = 1; + else if (write(fds[1], buttonid, sizeof (int)) != sizeof (int)) + exitcode = 1; + close(fds[1]); + _exit(exitcode); /* don't run atexit() stuff, static destructors, etc. */ + } else { /* we're the parent */ + pid_t rc; + close(fds[1]); + do { + rc = waitpid(pid, &status, 0); + } while ((rc == -1) && (errno == EINTR)); + + SDL_assert(rc == pid); /* not sure what to do if this fails. */ + + if ((rc == -1) || (!WIFEXITED(status)) || (WEXITSTATUS(status) != 0)) { + return SDL_SetError("msgbox child process failed"); + } + + if (read(fds[0], &status, sizeof (int)) != sizeof (int)) + status = -1; + else if (read(fds[0], buttonid, sizeof (int)) != sizeof (int)) + status = -1; + close(fds[0]); + + return status; + } +#else + return X11_ShowMessageBoxImpl(messageboxdata, buttonid); +#endif +} +#endif /* SDL_VIDEO_DRIVER_X11 */ + +/* vi: set ts=4 sw=4 expandtab: */ |