Bug 30598 - Cairo 1.8.10 causes GTK+ applications to render unreadable text on Windows 7
Summary: Cairo 1.8.10 causes GTK+ applications to render unreadable text on Windows 7
Status: RESOLVED NOTOURBUG
Alias: None
Product: cairo
Classification: Unclassified
Component: win32 backend (show other bugs)
Version: 1.10.0
Hardware: x86 (IA32) Windows (All)
: medium normal
Assignee: cairo-bugs mailing list
QA Contact: cairo-bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-10-04 09:21 UTC by Fan, Chun-wei
Modified: 2010-10-08 11:03 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments
The image of the messed up GTK+ text (279.14 KB, image/png)
2010-10-04 09:21 UTC, Fan, Chun-wei
Details

Description Fan, Chun-wei 2010-10-04 09:21:45 UTC
Created attachment 39154 [details]
The image of the messed up GTK+ text

Hi,

I have attempted to compile Cairo 1.10.0 with Visual C++ 2008, which was done successfully as I have done with the previous stable versions with both the supplied makefiles and with the Visual C++ project files successfully.

As I replaced the old 1.8.10 cairo.dll as I upgraded to GTK+ 2.22.0, and tried to run the GTK+ demo program, the text in the GTK+ application window became squeezed together, making the text in the window unreadable.  Upon investigation, using the cairo 1.9.14 DLL would remedy the problem.  My cairo-features.h is as follows (for both 1.10.0 and 1.9.14):

/* Generated by Makefile.win32.  Do not edit. */
#ifndef CAIRO_FEATURES_H
#define CAIRO_FEATURES_H 1
#define CAIRO_HAS_WIN32_SURFACE 1
#define CAIRO_HAS_WIN32_FONT 1
#define CAIRO_HAS_PNG_FUNCTIONS 1
#define CAIRO_HAS_FT_FONT 1
#define CAIRO_HAS_FC_FONT 1
#define CAIRO_HAS_PS_SURFACE 1
#define CAIRO_HAS_PDF_SURFACE 1
#define CAIRO_HAS_SVG_SURFACE 1
#define CAIRO_HAS_IMAGE_SURFACE 1
#define CAIRO_HAS_RECORDING_SURFACE 1
#define CAIRO_HAS_USER_FONT 1
#define CAIRO_HAS_GOBJECT_FUNCTIONS 1
#define CAIRO_HAS_INTERPRETER 1
#endif

Please note that this problem did not occur on Windows XP SP3 (not sure about Vista though as I do not run Vista).

Thanks
Comment 1 Fan, Chun-wei 2010-10-08 11:03:30 UTC
I realized that I mistakenly defined my own lround (C99) which MSVC did not have, instead of defining the macro DISABLE_SOME_FLOATING_POINT, which I believe was the correct thing to do and hence fixed the problem.

Sorry, DOH!


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