如何在Gtkmm3中使用CssStyleProvider

发布于 2024-11-19 10:17:11 字数 1041 浏览 3 评论 0原文

我正在使用 gtkmm3 用 c++ 进行编程。我想更改程序中的一些字体。我在 gtkmm 文档和 gtk+ 文档中阅读了有关 CssStyleProvider、StyleContext 的所有内容，但我无法使其工作，也找不到任何相关教程。我正在尝试那样，

Glib::ustring data;
data="GtkMenuBar, GtkMenuItem {font-name: Sans 6}"; /*tried with semi-colon, too*/
Glib::RefPtr<Gtk::CssProvider> asd = Gtk::CssProvider::create();
Glib::RefPtr<Gtk::StyleContext> asd2 = Gtk::StyleContext::create();
asd->load_from_data(data);
asd2->add_provider(asd, 0); /*also tried different priorities*/

也尝试过那样

Glib::ustring data;
data="GtkMenuBar, GtkMenuItem {font-name: Sans 6}"; /*tried with semi-colon, too*/
Glib::RefPtr<Gtk::CssProvider> asd = Gtk::CssProvider::create();
Glib::RefPtr<Gdk::Screen> screen;
Glib::RefPtr<Gtk::StyleContext> asd2 = Gtk::StyleContext::create();
asd->load_from_data(data);
(mainWindow.get())->get_property("screen", screen);
asd2->add_provider(screen, asd, 0); /*also tried different priorities*/

，我在运行主窗口之前和运行之后尝试了这些，但我没有运气。任何帮助表示赞赏。

原文

I'm programming in c++ with gtkmm3. I want to change some fonts in my program. I read all the things about CssStyleProvider, StyleContext in gtkmm documentation and also in gtk+ documentaion but i couldn't make it work and couldn't find any tutorial about that. I'm trying like that

Glib::ustring data;
data="GtkMenuBar, GtkMenuItem {font-name: Sans 6}"; /*tried with semi-colon, too*/
Glib::RefPtr<Gtk::CssProvider> asd = Gtk::CssProvider::create();
Glib::RefPtr<Gtk::StyleContext> asd2 = Gtk::StyleContext::create();
asd->load_from_data(data);
asd2->add_provider(asd, 0); /*also tried different priorities*/

also tried like that

Glib::ustring data;
data="GtkMenuBar, GtkMenuItem {font-name: Sans 6}"; /*tried with semi-colon, too*/
Glib::RefPtr<Gtk::CssProvider> asd = Gtk::CssProvider::create();
Glib::RefPtr<Gdk::Screen> screen;
Glib::RefPtr<Gtk::StyleContext> asd2 = Gtk::StyleContext::create();
asd->load_from_data(data);
(mainWindow.get())->get_property("screen", screen);
asd2->add_provider(screen, asd, 0); /*also tried different priorities*/

And I tried these before running my main window and after running it but i have no luck. Any help is appreciated.

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远昼 2024-11-26 10:17:11

您是否也尝试过使用宏 GTK_STYLE_PROVIDER_PRIORITY_APPLICATION 而不是 0？

asd2->add_provider(screen, asd, macro GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);

对我有用，也在 Windows 上。

例子：

int main(int argc, char **argv) {

  Main app(argc, argv);
  Glib::ustring data = "GtkLabel {color: #ff00ea;font: Comic Sans MS 12}";
  auto css = CssProvider::create();
  if(not css->load_from_data(data)) {
      cerr << "Failed to load css\n";
      std::exit(1);
  }
  Label label("test");
  Window win;
  auto screen = Gdk::Screen::get_default();
  auto ctx = label.get_style_context();
  ctx->add_provider_for_screen(screen, css, GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
  win.add(label);
  win.show_all();

  app.run(win);
  return 0;
}

Have you also to tried to use the macro GTK_STYLE_PROVIDER_PRIORITY_APPLICATION instead of 0?

asd2->add_provider(screen, asd, macro GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);

Works for me, also on Windows.

Example:

int main(int argc, char **argv) {

  Main app(argc, argv);
  Glib::ustring data = "GtkLabel {color: #ff00ea;font: Comic Sans MS 12}";
  auto css = CssProvider::create();
  if(not css->load_from_data(data)) {
      cerr << "Failed to load css\n";
      std::exit(1);
  }
  Label label("test");
  Window win;
  auto screen = Gdk::Screen::get_default();
  auto ctx = label.get_style_context();
  ctx->add_provider_for_screen(screen, css, GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
  win.add(label);
  win.show_all();

  app.run(win);
  return 0;
}

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