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view docs/man3/SDL_CreateCursor.3 @ 2268:4baee598306d
Date: Thu, 05 Jul 2007 14:02:33 -0700
From: Sam Lantinga
Subject: SDL 1.3 keyboard plan
After lots of discussion with Christian, this is what we came up with:
> So, to sum up...
> SDLK_* become the physical keys, starting at > (1<<21)
> We create a macro SDLK_INDEX(X)
> We have two functions SDL_GetLayoutKey(SDLKey) and SDL_GetKeyName()
> SDL_GetLayoutKey maps to UCS4 for printable characters, and SDLK* for
non-printable characters
> and does so based on the OS's current keyboard layout
> SDL_GetKeyName() handles both SDLK_* and UCS4, converting UCS4 to UTF-8 and
converting SDLK_* into our names, which are UTF-8 for printable characters.
> WASD folks use SDLK_*, and 'I' folks use SDL_GetLayoutKey(SDLK_*)
Here is the patch he came up with, and his e-mail about it:
Date: Fri, 17 Aug 2007 19:50:28 +0200
From: Christian Walther
Subject: Re: SDL 1.3 keyboard plan
> Sounds great, go ahead and send me a patch.
Here goes! Thanks for having a look. Don't hesitate to comment if
anything does not conform to your ideas.
One caveat: Committing this now may break compilability of some video
drivers - specifically, if they use any of the SDLK_* codes that were
obsoleted and moved into SDL_compat.h. I only tried Cocoa (which did
break, but is already fixed) and X11 (which didn't, but then its key
handling is #iffed out). If that's a problem, it may need to go into
a branch.
-Christian
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 19 Aug 2007 14:52:52 +0000 |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
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.TH "SDL_CreateCursor" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_CreateCursor\- Creates a new mouse cursor\&. .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBSDL_Cursor *\fBSDL_CreateCursor\fP\fR(\fBUint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y\fR); .SH "DESCRIPTION" .PP Create a cursor using the specified \fBdata\fR and \fBmask\fR (in MSB format)\&. The cursor width must be a multiple of 8 bits\&. .PP The cursor is created in black and white according to the following: .TP 20 \fBData / Mask\fR \fBResulting pixel on screen\fR .TP 20 0 / 1 White .TP 20 1 / 1 Black .TP 20 0 / 0 Transparent .TP 20 1 / 0 Inverted color if possible, black if not\&. .PP Cursors created with this function must be freed with \fISDL_FreeCursor\fR\&. .SH "EXAMPLE" .PP .nf \f(CW/* Stolen from the mailing list */ /* Creates a new mouse cursor from an XPM */ /* XPM */ static const char *arrow[] = { /* width height num_colors chars_per_pixel */ " 32 32 3 1", /* colors */ "X c #000000", "\&. c #ffffff", " c None", /* pixels */ "X ", "XX ", "X\&.X ", "X\&.\&.X ", "X\&.\&.\&.X ", "X\&.\&.\&.\&.X ", "X\&.\&.\&.\&.\&.X ", "X\&.\&.\&.\&.\&.\&.X ", "X\&.\&.\&.\&.\&.\&.\&.X ", "X\&.\&.\&.\&.\&.\&.\&.\&.X ", "X\&.\&.\&.\&.\&.XXXXX ", "X\&.\&.X\&.\&.X ", "X\&.X X\&.\&.X ", "XX X\&.\&.X ", "X X\&.\&.X ", " X\&.\&.X ", " X\&.\&.X ", " X\&.\&.X ", " XX ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", "0,0" }; static SDL_Cursor *init_system_cursor(const char *image[]) { int i, row, col; Uint8 data[4*32]; Uint8 mask[4*32]; int hot_x, hot_y; i = -1; for ( row=0; row<32; ++row ) { for ( col=0; col<32; ++col ) { if ( col % 8 ) { data[i] <<= 1; mask[i] <<= 1; } else { ++i; data[i] = mask[i] = 0; } switch (image[4+row][col]) { case \&'X\&': data[i] |= 0x01; k[i] |= 0x01; break; case \&'\&.\&': mask[i] |= 0x01; break; case \&' \&': break; } } } sscanf(image[4+row], "%d,%d", &hot_x, &hot_y); return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y); }\fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL_FreeCursor\fP\fR, \fI\fBSDL_SetCursor\fP\fR, \fI\fBSDL_ShowCursor\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01