Re: Problems to compile gtk with jhbuild + imendio patchs
Arx Cruz skrev: Sorry if is the wrong place to post this, but im having problems in compile Gtk with Quartz support through imendio patchs using jhbuild, All packages compiles very well, but when i try compile gtk i have this error: There is some new accessibility code that was added recently and we haven't had time to make that build for OS X yet. It should be fixed in a couple of days. Regards, Richard -- Imendio AB, http://www.imendio.com/ ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: App blueprint, advice please!
Hi Michael Thanks for the signals and slots tip, that's great. As for NI: rant My experience is limited and quite dated(8-9 years) but it is my understanding that in order to distribute free (as in beer) Labview code the recipient must have Labview loaded. It is possible to generate an executable that will run without Labview loaded but a small license fee must be paid back to NI. In addition I believe this executable code generation option is at an additional premium to the base Labview. Indeed some of the instruments I want to control have their own NI drivers already. This however has not displaced the native software that shipped with the instruments originally. I believe only an open source model will provide enough empowerment to tempt lab operators away. I started with Linux back in 2004 but it is only in the past year that I have started posting to lists. I have been completely awestruck at the responses to my questions, both here and on other lists. With so many talented people like you answering my questions without expectation of compensation, how can a company like NI compete in terms of customer service, I am saving up for this project. I would rather spend 2K sponsoring my open source comrades then those punks at NI /rant Okay I am back now, Have a great day-Patrick Michael L Torrie wrote: Patrick wrote: Lets say a customer had a detector and a pump to pump a sample through it. We could write a Bash script that works something like this: -icon launches Bash script -sends variable 2 to pump command to pump 2 ml per minute -pump command sends signal to serial port or GPIB bus, etc -bash sends variable 230 to set the detector to wavelength 230 nm -bash autozeros detector -launches plot command -after that launches data process command -then launches database storage command - emails whoever, turns your coffee maker on or whateveretc..etc Seems to me that the lingua franca of this kind of scientific instrument control and data collection is LabView. Most institutions already have site license for this software. LabView is ideal for several reasons: - Works with most GPIB cards, indeed most interface cards come with labview drivers - Easy graphical environment. Lets you chain things together (in a similar manner to bash, actually), but it's all within the program, rather than kludging together non-integrated programs. Plus it's all in-process. No external spawning things needed, which is expensive. - Royalty free code. You can sell you vi programs or give them away, or whatever. They aren't compiled, but can be obfuscated, or not. So you could sell labview code that people could modify. On the other hand, there's no reason why you couldn't use GTK and, say, Python to do similar things provided that you have drivers for the GPIB boards, and have a well-defined interface that you can use to easily build modules that you can string together. Certainly I don't believe C is the appropriate language to do any gluing. I would recommend python. Data collection modules that need to be close to the hardware can be done in C, but the rest could easily be done in python. If you defined a protocol for modules to communicate with each other, then you can very easily string modules together, hooking data out buses on one module (object) with the data in on another module. The GTK signals and slots mechanism would make this quite easy to do, all in-process. Michael It's a terrible over simplification but hopefully illustrates the idea. I only have a few hundred dollars to put towards this now but hopefully by the later half of 2008 it will be a few thousand. Please feedback with any thoughts you might have on this whole process. Thanks-Patrick ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Multi-threaded UI Freezes on GDK Call
Emmanuele Bassi wrote: On Tue, 2007-12-18 at 20:37 -0500, Michael McCann wrote: Yes, I've already tried that, to no avail. My code basically only consists of: gdk_screen_get_default(): Get the default screen gdk_screen_get_root_window(): Get the root window gdk_pixbuf_get_from_drawable(): Get a pixbuf from the entire screen gdk_pixbuf_save_to_bufferv(): Save the pixbuf to a buffer. taking a screenshot of the root window takes a considerable amount of time, depending on the size of the screen and the amount of windows on it. gnome-screenshot forks in the background to avoid blocking the UI; since GDK cannot be called from multiple threads, forking is the only option you have. ciao, Emmanuele. Thanks for all of the suggestions. I'll try out the fork method you mentioned. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Calling gtk-builder-convert from makefile
I have a glade file which I have to convert using gtk-builder-convert first. This converts it from .glade to .xml and the make file installs it. How would I run gtk-builder-convert on the source .glade file prior to copying the .xml file? -- - Micah Carrick Developer - http://www.micahcarrick.com GTK+ Forums - http://www.gtkforums.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GLib 2.15.0 released
GLib 2.15.0 is now available for download at: ftp://ftp.gtk.org/pub/gtk/2.15/ http://ftp.gnome.org/pub/GNOME/sources/glib/2.15/ glib-2.15.0.tar.bz2 md5sum: 52536475a3f301842cf3448f19af094c glib-2.15.0.tar.gz md5sum: 8348f77a5aacf6382ee816f986ae7820 This is the first development release leading up to GLib 2.16. Notes: * This is unstable development release. While it has had a bit of testing, there are certainly plenty of bugs remaining to be found. This release should not be used in production. * Installing this version will overwrite your existing copy of GLib 2.14. If you have problems, you'll need to reinstall GLib 2.14. * GLib 2.16 will be source and binary compatible with the GLib 2.14 series; however, the new API additions in GLib 2.15.0 are not yet finalized, so there may be incompatibilities between this release and the final 2.16 release. In particular GIO may still see API changes. * The new GIO component in this release is accompanied by a new module, GVFS, that contains various backend implementations. GIO can be used without GVFS, but then it only supports local filesystems. * Bugs should be reported to http://bugzilla.gnome.org. About GLib == GLib is the low-level core library that forms the basis for projects such as GTK+ and GNOME. It provides data structure handling for C, portability wrappers, and interfaces for such runtime functionality as an event loop, threads, dynamic loading, and an object system. More information about GLib is available at: http://www.gtk.org/ An installation guide for the GTK+ libraries, including GLib, can be found at: http://developer.gnome.org/doc/API/2.0/gtk/gtk-building.html Overview of Changes from GLib 2.14.x to GLib 2.15.0 === Major new features: * GIO: a VFS API, designed to replace GnomeVFS. The GIO implementation in GLib has support for local filesystems. The new, separate gvfs module contains various backend implementations (cifs, ftp, sftp, http, ...) * GChecksum: provides various hash algorithms, such as MD5, SHA-1 and SHA-256 * GTest: a test framework Smaller additions: * GHash: - GHash has iterators, as an alternative to g_hash_table_foreach * GMarkup: - g_markup_parse_context_get_element_stack: New function to get the stack of open elements - G_MARKUP_PREFIX_ERROR_POSITION: New flag to improve error reporting - g_markup_collect_attributes: Convenience function for handling attributes * GKeyFile: - Functions that take a GError now return a boolean to indicate success, instead of void - Various performance improvements * GAsyncQueue: - g_async_queue_new_full: new function that allows to specify a free function for leftover elements * GError: - g_prefix_error and g_propagate_prefixed_error: New functions to ease error propagation * Internationalization: - C_: A new 2-argument variant of the Q_() macro - Use native character set conversion API on Windows * GLib builds with automake 1.10 * Bugs fixed: 455725 specific combination of g_utf8_strlen and g_pattern_match... 467537 g_convert_with_iconv() not resetting iconv() state correc... 497033 Commandline option parser should warn about missing optio... 504527 gchecksum: Conditional jump or move depends on uninitiali... 445362 Non-numeric local labels in gatomic.c are causing linker ... 482313 gregex: no way to tell why compilation failed 317775 main loops continues to run after g_main_loop_quit() has ... 418778 Insufficient pkg-config version requirement 436293 g_option_context_new() doc should mention that the string... 466557 glib-mkenums shifts ARGV[0] to undefined 468882 GKeyFile doesn't accept True as a true boolean value 469551 application --help messages are garbaged on none UTF-8 lo... 479724 Memory leak upon calling g_main_loop_run in the seconda... 490061 outptrs uninitialized after g_parse_long_long 490637 gobject documentation patch 495294 glib-genmarshal prints warnings but returns 0 496046 option to prefix location of errors for GMarkup 498113 tests/regex-test fails on 64bit environment 500506 Fails to build on OSX 10.4 500638 gkeyfile speedup ... 500875 Make check fails as there is no test target for build... 502511 g_assert_cmphex prints invalid message 502927 g_array_index triggers cast aligment warning 503029 g_time_val_from_iso8601 parse non-ISO8601 dates 503222 Need context to translate 503420 gkeyfile leaks a hash table 503470 Fix build when builddir != srcdir 504227 Inverse variant for g_test_trap_assert_stdout, g_test_tra... 71704 file include order 491957 Misprint in the specification of the interface g_main_co... 491959 Misprint in description of the structure GThreadPool 491965 Mistype in the specification of the function g_hook_list... 491966 Misprint in the specification of the interface g_main_co... 491968 The documentation does not
how to handle rgb pixels before draw to drawingarea using cairo
Hello,
i am write a application like a tv watch soft,using em28xx capture video
as yuyv format,and converted to rgb24 when recived.
here ,some code to draw video frame to drawingarea.
gdk_threads_enter();
gdk_draw_rgb_image(wbus-drawingarea-window,
wbus-drawingarea-style-fg_gc[GTK_STATE_NORMAL],
0,0,vidin-width,
vidin-height,
GDK_RGB_DITHER_NORMAL,
frame-data,
vidin-width * 3);
gdk_display_flush(gdk_display_get_default()); gdk_threads_leave();
i want to draw some string ,image on the drawingare,i call below
function after drawing frame,but there will blinking.
static void show_text_on_video(void)
{
cairo_t *cr;
PangoLayout *layout;
PangoFontDescription *desc;
cr = gdk_cairo_create(wbus-drawingarea-window);
layout = pango_cairo_create_layout(cr);
pango_layout_set_text(layout, wbuscanner\n阿哈哈, -1);
//desc = pango_font_description_from_string(SimSun Bold 60);
//pango_layout_set_font_description(layout, desc);
//pango_font_description_free(desc);
cairo_select_font_face (cr, Sans,
CAIRO_FONT_SLANT_NORMAL,CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size (cr, 70.0);
cairo_move_to (cr, 70.0, 165.0);
cairo_set_source_rgb(cr, 0.5, 0.5, 1);
cairo_text_path(cr,wbuscanner);
//cairo_show_text(cr,阿所发);
pango_cairo_update_layout(cr, layout);
pango_cairo_show_layout(cr, layout);
cairo_stroke(cr);
cairo_destroy(cr);
}
then i used gdkpixmap create from rgb data and draw something on it ,and
draw to drawingarea,but this method was slower.(data is
frame-data,720*576,PAL)
gdk_threads_enter();
gdk_draw_rgb_image(wbus-pixmap,
wbus-drawingarea-style-bg_gc[GTK_STATE_NORMAL],
0,0,vidin-width,vidin-height,
GDK_RGB_DITHER_NONE,
frame-data,
vidin-width *3);
cr = wbus-cr;
//cairo_select_font_face (cr, Sans,
CAIRO_FONT_SLANT_NORMAL,CAIRO_FONT_WEIGHT_BOLD);
//cairo_set_font_size (cr, 70.0);
cairo_move_to (cr, 70.0, 165.0);
cairo_set_source_rgb(cr, 0.5, 0.5, 1);
cairo_text_path(cr,wbuscanner);
cairo_stroke(cr);
gdk_draw_pixmap(wbus-drawingarea-window,
wbus-drawingarea-style-fg_gc[GTK_STATE_NORMAL],
wbus-pixmap,0,0,0,0,vidin-width,vidin-height);
gdk_display_flush(gdk_display_get_default());
gdk_threads_leave();
how can i draw strings ,image on the raw rgb24 ,and draw to drawingarea?
thanks.
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