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Moved the GTK+ ProgressBar style stuff to the Go side and to gtk_init().

This commit is contained in:
Pietro Gagliardi 2014-06-02 13:32:43 -04:00
parent 726f047655
commit 986bb201d9
1 changed files with 20 additions and 26 deletions
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46
gtkcalls_unix.go
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@ -11,29 +11,17 @@ import (
) )
// #include "gtk_unix.h" // #include "gtk_unix.h"
// /* TODO this doesn't need to be in C; it is because an earlier version did it wrong and depended on a function (g_object_set()) that took ..., which cgo doesn't like... but is it safe to embed \0 in a Go string? */
// static inline GError *gtkProgressBarAllowArbitraryResize()
// {
// /* min-horizontal-bar-width is a style property; we do it through CSS */
// /* thanks tristan in irc.gimp.net/#gtk+ */
// static gchar style[] =
// "* {\n"
// " -GtkProgressBar-min-horizontal-bar-width: 1;\n"
// "}\n";
// GtkCssProvider *provider;
// GError *err = NULL;
//
// provider = gtk_css_provider_new();
// if (gtk_css_provider_load_from_data(provider, style, -1, &err) == FALSE)
// return err;
// /* GDK (at least as far back as GTK+ 3.4, but officially documented as of 3.10) merges all screens into one big one, so we don't need to worry about multimonitor */
// /* thanks to baedert and mclasen in irc.gimp.net/#gtk+ */
// gtk_style_context_add_provider_for_screen(gdk_screen_get_default(),
// (GtkStyleProvider *) provider, GTK_STYLE_PROVIDER_PRIORITY_USER);
// return NULL;
// }
import "C" import "C"
var gtkStyles = []byte(
// this first one is for ProgressBar so we can arbitrarily resize it
// min-horizontal-bar-width is a style property; we do it through CSS
// thanks tristan in irc.gimp.net/#gtk+
`* {
-GtkProgressBar-min-horizontal-bar-width: 1;
}` +
"\000")
func gtk_init() error { func gtk_init() error {
var err *C.GError = nil // redundant in Go, but let's explicitly assign it anyway var err *C.GError = nil // redundant in Go, but let's explicitly assign it anyway
@ -43,12 +31,18 @@ func gtk_init() error {
if result == C.FALSE { if result == C.FALSE {
return fmt.Errorf("error actually initilaizing GTK+: %s", fromgstr(err.message)) return fmt.Errorf("error actually initilaizing GTK+: %s", fromgstr(err.message))
} }
// otherwise progress bars can't be resized smaller than some predetermined size
err = C.gtkProgressBarAllowArbitraryResize() // now apply our custom program-global styles
if err != nil { provider := C.gtk_css_provider_new();
defer C.g_free(C.gpointer(unsafe.Pointer(err))) if C.gtk_css_provider_load_from_data(provider, (*C.gchar)(unsafe.Pointer(&gtkStyles[0])), -1, &err) == C.FALSE {
return fmt.Errorf("error allowing ProgressBar to be arbitrarily resized: %s", fromgstr(err.message)) return fmt.Errorf("error applying package ui's custom program-global styles to GTK+: %v", fromgstr(err.message))
} }
// GDK (at least as far back as GTK+ 3.4, but officially documented as of 3.10) merges all screens into one big one, so we don't need to worry about multimonitor
// thanks to baedert and mclasen in irc.gimp.net/#gtk+
C.gtk_style_context_add_provider_for_screen(C.gdk_screen_get_default(),
(*C.GtkStyleProvider)(unsafe.Pointer(provider)),
C.GTK_STYLE_PROVIDER_PRIORITY_USER)
return nil return nil
} }