带有嵌套演员的 cluttermm 鼠标事件
cluttermm mouse events with nested actors
我有以下使用 cluttermm 1.24 的代码片段:
#include <cluttermm.h>
int main(int argc, char *argv[]){
Clutter::init(argc, argv);
auto stage = Clutter::Stage::create();
stage->set_size(1280, 720);
//create a parent actor
auto parent = Clutter::Actor::create();
parent->set_size(1240, 720);
parent->set_margins(20, 20, 20, 20);
//create children
for(unsigned i=0; i<84; i++){
auto child = Clutter::Actor::create();
child->set_name(std::to_string(i).c_str());
child->set_size(80, 80);
child->set_background_color(Clutter::Color(80));
child->set_reactive(true);
child->signal_button_press_event().connect([child](Clutter::ButtonEvent* evt){
g_print("Child: %s", child->get_name().c_str());
return true;
});
parent->add_child(child);
}
auto layout = Clutter::FlowLayout::create(Clutter::FlowOrientation::FLOW_HORIZONTAL);
layout->set_column_spacing(20);
layout->set_row_spacing(20);
parent->set_layout_manager(layout);
stage->add_child(parent);
stage->show();
Clutter::main();
}
儿童演员在点击时应打印 "Child:XX"。但他们根本没有反应。将父类型更改为(已弃用)Clutter::Group 时,点击行为符合预期,但 FlowLayout 不再起作用。我在这里错过了什么?我是否需要在父 actor 上启用某些功能才能启用容器功能?
编辑:
用 c 代码替换父 actor 的行为符合预期:
auto parent = clutter_actor_new ();
clutter_actor_set_layout_manager (parent, CLUTTER_LAYOUT_MANAGER(layout->gobj()));
clutter_actor_set_size (parent, 1240, 720);
clutter_actor_add_child (CLUTTER_ACTOR(stage->gobj()), parent);
...
clutter_actor_add_child (parent, child->gobj());
我发现了问题。 Cluttermm 包装了已弃用的 "pick" 信号。显然,这阻止了按钮按下信号的传播。所以我分叉了 cluttermm 并更改了绑定。
查看此提交:
https://github.com/underdoeg/cluttermm/commit/0e40c9c673c2415ab1b4eb90dd1ebcd95a515810
我有以下使用 cluttermm 1.24 的代码片段:
#include <cluttermm.h>
int main(int argc, char *argv[]){
Clutter::init(argc, argv);
auto stage = Clutter::Stage::create();
stage->set_size(1280, 720);
//create a parent actor
auto parent = Clutter::Actor::create();
parent->set_size(1240, 720);
parent->set_margins(20, 20, 20, 20);
//create children
for(unsigned i=0; i<84; i++){
auto child = Clutter::Actor::create();
child->set_name(std::to_string(i).c_str());
child->set_size(80, 80);
child->set_background_color(Clutter::Color(80));
child->set_reactive(true);
child->signal_button_press_event().connect([child](Clutter::ButtonEvent* evt){
g_print("Child: %s", child->get_name().c_str());
return true;
});
parent->add_child(child);
}
auto layout = Clutter::FlowLayout::create(Clutter::FlowOrientation::FLOW_HORIZONTAL);
layout->set_column_spacing(20);
layout->set_row_spacing(20);
parent->set_layout_manager(layout);
stage->add_child(parent);
stage->show();
Clutter::main();
}
儿童演员在点击时应打印 "Child:XX"。但他们根本没有反应。将父类型更改为(已弃用)Clutter::Group 时,点击行为符合预期,但 FlowLayout 不再起作用。我在这里错过了什么?我是否需要在父 actor 上启用某些功能才能启用容器功能?
编辑: 用 c 代码替换父 actor 的行为符合预期:
auto parent = clutter_actor_new ();
clutter_actor_set_layout_manager (parent, CLUTTER_LAYOUT_MANAGER(layout->gobj()));
clutter_actor_set_size (parent, 1240, 720);
clutter_actor_add_child (CLUTTER_ACTOR(stage->gobj()), parent);
...
clutter_actor_add_child (parent, child->gobj());
我发现了问题。 Cluttermm 包装了已弃用的 "pick" 信号。显然,这阻止了按钮按下信号的传播。所以我分叉了 cluttermm 并更改了绑定。
查看此提交: https://github.com/underdoeg/cluttermm/commit/0e40c9c673c2415ab1b4eb90dd1ebcd95a515810