Mercurial > sdl-ios-xcode
view docs/man3/SDL_Palette.3 @ 4392:2b8c1aea633b SDL-1.2
Fixed bug #898
Jeremiah Morris 2009-12-09 16:07:17 PST
No-op GlobalToLocal translations in fullscreen mode
On my MacBook Pro running 10.6, I noticed a small upward bias on mouse movement
in a fullscreen SDL application. The app uses WarpCursor and GetMouseState in a
loop to measure relative movement. I tracked it down to NSWindow's
convertBaseToScreen: routine, which added a 2-pixel offset on the Y coordinate
instead of the expected (+0,+0) translation.
In fullscreen mode, QZ_PrivateWarpCursor() does not translate the desired
position through QZ_PrivateGlobalToLocal() before passing it to the Core
Graphics system. However, QZ_GetMouseLocation() does call the reverse
QZ_PrivateLocalToGlobal() even in fullscreen mode. This asymmetry caused
problems each time the mouse was moved.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 11 Dec 2009 15:31:37 +0000 |
parents | 1238da4a7112 |
children |
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.TH "SDL_Palette" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_Palette \- Color palette for 8-bit pixel formats .SH "STRUCTURE DEFINITION" .PP .nf \f(CWtypedef struct{ int ncolors; SDL_Color *colors; } SDL_Palette;\fR .fi .PP .SH "STRUCTURE DATA" .TP 20 \fBncolors\fR Number of colors used in this palette .TP 20 \fBcolors\fR Pointer to \fI\fBSDL_Color\fR\fR structures that make up the palette\&. .SH "DESCRIPTION" .PP Each pixel in an 8-bit surface is an index into the \fBcolors\fR field of the \fBSDL_Palette\fR structure store in \fI\fBSDL_PixelFormat\fR\fR\&. A \fBSDL_Palette\fR should never need to be created manually\&. It is automatically created when SDL allocates a \fBSDL_PixelFormat\fR for a surface\&. The colors values of a \fI\fBSDL_Surface\fR\fRs palette can be set with the \fI\fBSDL_SetColors\fP\fR\&. .SH "SEE ALSO" .PP \fI\fBSDL_Color\fR\fR, \fI\fBSDL_Surface\fR\fR, \fI\fBSDL_SetColors\fP\fR \fI\fBSDL_SetPalette\fP\fR .\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01