Aren/haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added some information found while writing BPicture, TPicture and ServerPicture

Browse Source 
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3992 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Marc Flerackers 2003-07-16 14:43:27 +00:00
parent ce072df2d0
commit e793a55e78
1 changed files with 16 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
docs/develop/interface/BPicture_specifications.html
View File

@ -9,8 +9,12 @@
content="BPicture specifications for OpenBeOS"> content="BPicture specifications for OpenBeOS">
</head> </head>
<body> <body>
<span style="font-weight: bold; text-decoration: underline;">Picture <span style="font-weight: bold; text-decoration: underline;"></span>Author:
data</span><br> Marc Flerackers<br>
Revision: 1.4<br>
<span style="font-weight: bold; text-decoration: underline;"></span><span
style="font-weight: bold; text-decoration: underline;"><br>
Picture data</span><br>
<br> <br>
The data of a BPicture is composed of instructions.<br> The data of a BPicture is composed of instructions.<br>
<br> <br>
@ -185,7 +189,7 @@ float deltay<br>
<td valign="top">0x0110 </td> <td valign="top">0x0110 </td>
<td valign="top">DrawPixels<br> <td valign="top">DrawPixels<br>
</td> </td>
<td valign="top">52 + pixel data size<br> <td valign="top">56 + pixel data size<br>
</td> </td>
<td valign="top">BRect src<br> <td valign="top">BRect src<br>
BRect dest<br> BRect dest<br>
@ -194,6 +198,7 @@ int32 height<br>
int32 bytesPerRow<br> int32 bytesPerRow<br>
int32 pixelFormat<br> int32 pixelFormat<br>
int32 flags<br> int32 flags<br>
int32 length of pixel data<br>
pixel data<br> pixel data<br>
</td> </td>
</tr> </tr>
@ -512,17 +517,19 @@ There are a few undocumented instructions:<br>
<td valign="top">SetFontBPP </td> <td valign="top">SetFontBPP </td>
<td valign="top">4<br> <td valign="top">4<br>
</td> </td>
<td valign="top"> int32 bpp </td> <td valign="top"> int32 bpp (default 8)<br>
</td>
</tr> </tr>
</tbody> </tbody>
</table> </table>
<br> <br>
Also, not all instructions where checked yet. The SetClippingRects and Not all instructions where checked yet. The SetClippingRects has still
DrawPixels data has still to be documented.<br> to be documented.<br>
<br> <br>
Regarding DrawPicture and ClipToPicture, it seems the pictures to draw DrawPicture and ClipToPicture have an index to the sub-picture. In
are not inside the flattened data, instead they are stored as messages flattened data, these sub-pictures are stored in front of the main
in the BMessage in a field called "piclib".<br> picture data, when archived to a BMessage, the sub-pictures are
contained in a field called "piclib".<br>
<br> <br>
<span style="font-weight: bold; text-decoration: underline;">Shape data</span><br> <span style="font-weight: bold; text-decoration: underline;">Shape data</span><br>
<br> <br>