Mercurial > sdl-ios-xcode
annotate README.PicoGUI @ 1192:54aa9aa32327
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Fri, 18 Nov 2005 23:39:02 +0100
Subject: [SDL] Mouse position bugs on Mac OS X
The attached patch fixes a few bugs in SDL related to the mouse position
in windowed mode on Mac OS X, reproduced using the attached minimal test
program - at least here on 10.3.9, with SDL CVS from today. Could anyone
test whether the bugs exist and are fixed by the patch on 10.2 and 10.4?
1. When using OpenGL, the vertical mouse positions obtained through
events or SDL_GetMouseState() are off by one.
2. When using OpenGL, SDL_WarpMouse() inverts the y coordinate.
3. Clicks on the topmost pixel row of the window are not recognized.
1 and 2 do not occur in non-OpenGL mode, while 3 does. All three only
occur in windowed mode, not in fullscreen.
The cause for 1 and 3 is that in Cocoa, "the location of the mouse"
seems to be defined as "the location of the top left corner of the mouse
pointer's hot pixel" (this is not documented, it's just what I found out
here), which together with the fact that Cocoa's usual y coordinates
start at the bottom and increase upwards means that the y coordinate of
the mouse runs from 1 to h, not from 0 to h-1, in a window of height h.
If it does work on 10.2 and 10.4 (I'll try to test it as soon as I can,
but at the moment all I have at hand is 10.3.9), can this be applied to
the CVS?
-Christian
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Mon, 28 Nov 2005 10:41:51 +0100
Subject: [SDL] Re: Mouse position bugs on Mac OS X
I wrote:
> I'll try to test it as soon as I can, but at the moment all I have at hand is 10.3.9
So, here are the results of my tests (with patched and unpatched
frameworks compiled with Xcode 1.5 (gcc 3.3) on 10.3.9):
On 10.1.5, my test program doesn't run because of "Undefined symbols:
SDL undefined reference to _CGMainDisplayID expected to be defined in
Carbon". I guess not supporting 10.1 was a deliberate decision then and
that's OK with me.
On 10.2.8, 10.3.9, and 10.4.0, the bugs exist as described in my
original post and are fixed by my patch. That is, there is no difference
between pre/post 10.3 and the patched version works correctly in all
combinations of GL/non-GL and windowed/fullscreen.
I therefore recommend the patch for inclusion.
-Christian
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Mon, 28 Nov 2005 13:58:26 +0000 |
parents | 706de3956894 |
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rev | line source |
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433
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Added initial support for PicoGUI (thanks Micah!)
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1 ======================== |
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2 Using SDL with PicoGUI |
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3 ======================== |
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4 |
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5 - Originally contributed by Micah Dowty <micahjd@users.sourceforge.net> |
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6 |
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7 PicoGUI is a scalable GUI system with a unique architecture, primarily focused |
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8 on scalability to various embedded systems. You can find more information |
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9 including a FAQ at http://picogui.org |
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10 |
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11 To use the patch: |
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12 |
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13 1. When compiling, add the "--enable-video-picogui" switch to ./configure |
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14 |
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15 2. When running your program, ensure that the picogui driver for SDL |
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16 is in use by setting the SDL_VIDEODRIVER environment variable |
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17 to "picogui". |
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18 |
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19 3. The program must also be linked to the C client library for PicoGUI |
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20 (libpgui.so). If the program is being compiled with a patched SDL |
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21 installed this should be done automatically. If you want to use an |
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22 existing binary with PicoGUI, you can set the LD_PRELOAD environment |
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23 variable to the path of your libpgui.so file. |
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24 |
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25 Capabilities: |
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26 |
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27 So far only basic functionality is provided on true color (linear16/24/32) |
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28 devices. Accessing a memory mapped bitmap, updating the display, and handling |
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29 mouse/keyboard input. This functionality has been tested with several |
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30 applications, including mplayer, Xine, sldroids, and Abuse. |
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31 |
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32 TODO list: |
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33 |
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34 - YUV overlays will be helpful for watching video on set top boxes or other |
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35 embedded devices that have some graphics acceleration hardware |
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36 |
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37 - Account for rotated bitmap storage in pgserver |
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38 |
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39 - Support for hiding or changing the cursor |
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40 |
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41 - The display should be centered when the SDL application is smaller |
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42 than the PicoGUI panel |
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43 |
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44 - Fullscreen or any other special modes |
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45 |
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46 - Support for indexed and grayscale modes |
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47 |
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48 - Probably much more... |
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49 |
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50 --- The End --- |