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comparison ext/guichan-0.8.2/examples/action.hpp @ 378:64738befdf3b

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bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
author vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 11 Jan 2010 23:34:52 +0000
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377:fe6fb0e0ed23 378:64738befdf3b
1 /**
2 * Code to populate a global Gui object with an example of how to
3 * use actions in Guichan.
4 */
5
6 #include <guichan.hpp>
7 #include <iostream>
8 #include <sstream>
9
10 namespace action
11 {
12 gcn::Container* top;
13 gcn::ImageFont* font;
14 gcn::Button* button1;
15 gcn::Button* button2;
16 gcn::Label* label1;
17 gcn::Label* label2;
18
19 int clickCountButton1 = 0; // Holds clicks for button1
20 int clickCountButton2 = 0; // Holds clicks for button2
21
22 /*
23 * To be able to recieve actions we must have a class inheriting from
24 * ActionListener and implementing the action function.
25 * When an action is generated in a Widget (i.e when a button is clicked)
26 * that widget calls the action function for all its action listeners.
27 * Below we make a class to be able to recieve our buttons actions.
28 */
29 class ButtonActionListener : public gcn::ActionListener
30 {
31 public:
32 // Implement the action function in ActionListener to recieve actions
33 // The eventId tells us which widget called the action function.
34 void action(const gcn::ActionEvent& actionEvent)
35 {
36 std::string str;
37 std::ostringstream os(str);
38
39 // Here we use the widget pointer to check which widget the action
40 // originated from.
41 if (actionEvent.getSource() == button1)
42 {
43 clickCountButton1++;
44 os << "Button1 clicks " << clickCountButton1;
45 // Change the caption to show number of clicks
46 label1->setCaption(os.str());
47 // Adjust the label to fit the new caption
48 label1->adjustSize();
49 }
50 // Here we use the event id in order to check what action occured.
51 else if (actionEvent.getId() == "button2")
52 {
53 clickCountButton2++;
54 os << "Button2 clicks " << clickCountButton2;
55 // Change the caption to show number of clicks
56 label2->setCaption(os.str());
57 // Adjust the label to fit the new caption
58 label2->adjustSize();
59 }
60 }
61 };
62
63 ButtonActionListener* buttonActionListener; // A pointer to the above class
64
65 /**
66 * Initialises the widgets example by populating the global Gui
67 * object.
68 */
69 void init()
70 {
71 // We first create a container to be used as the top widget.
72 // The top widget in Guichan can be any kind of widget, but
73 // in order to make the Gui contain more than one widget we
74 // make the top widget a container.
75 top = new gcn::Container();
76 // We set the dimension of the top container to match the screen.
77 top->setDimension(gcn::Rectangle(0, 0, 640, 480));
78 // Finally we pass the top widget to the Gui object.
79 globals::gui->setTop(top);
80
81 // Now we load the font used in this example.
82 font = new gcn::ImageFont("fixedfont.bmp", " abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");
83 // Widgets may have a global font so we don't need to pass the
84 // font object to every created widget. The global font is static.
85 gcn::Widget::setGlobalFont(font);
86
87 // Now we create the buttons.
88 button1 = new gcn::Button("Button 1");
89 button2 = new gcn::Button("Button 2");
90 button1->setPosition(120, 230);
91 button2->setPosition(420, 230);
92 // We add the buttons to the top container.
93 top->add(button1);
94 top->add(button2);
95
96 // Now we create the labels.
97 label1 = new gcn::Label("Button1 clicks 0");
98 label2 = new gcn::Label("Button2 clicks 0");
99 label1->setPosition(100, 200);
100 label2->setPosition(400, 200);
101 // We add the labels to the top container.
102 top->add(label1);
103 top->add(label2);
104
105 // Now we set the button's action event ids.
106 button1->setActionEventId("button1");
107 button2->setActionEventId("button2");
108
109 // We make an instance of the ButtonActionListener.
110 buttonActionListener = new ButtonActionListener();
111
112 // And add the ButtonActionListener as an action listener of the buttons.
113 button1->addActionListener(buttonActionListener);
114 button2->addActionListener(buttonActionListener);
115 }
116
117 /**
118 * Halts the action example.
119 */
120 void halt()
121 {
122 delete buttonActionListener;
123 delete label1;
124 delete label2;
125 delete button1;
126 delete button2;
127 delete font;
128 delete top;
129 }
130 }